tft lcd vs oled made in china

TFT LCD is a mature technology. OLED is a relatively new display technology, being used in more and more applications. As for Micro LED, it is a new generation technology with very promising future. Followings are the pros and cons of each display technology.

TFT Liquid Crystal Display is widely used these days. Since LCD itself doesn"t emit light. TFT LCD relies on white LED backlight to show content. This is an explanation of how TFT LCD works.

Relatively lower contrast：Light needs to pass through LCD glasses, liquid crystal layer, polarizers and color filters. Over 90% is lost. Also, LCD can not display pure black.

Organic Light-Emitting Diode is built from an electro-luminescent layer that contains organic compounds, which emit light in response to an electric current. There are two types of OLED, Passive Matrix OLED (PMOLED) and Active Matrix OLED (AMOLED). These driving methods are similar to LCD"s. PMOLED is controlled sequentially using a matrix addressing scheme, m + n control signals are required to address a m x n display. AMOLED uses a TFT backplane that can switch individual pixels on and off.

Low power consumption and flexible: OLED doesn"t rely on backlight and consumes less power. OLED is essentially created on plastic film. It is bendable and easy to process.

High contrast and vivid color: OLED emits light itself, can produce very bright image with beautiful color. And because OLED can be turned off, it can produce true black.

Stroboscopic effect: most OLED screen uses PWM dimming technology. Some people who are easy perceive stroboscopic frequency may have sore eyes and tears.

​Micro LED, sometimes called μLED is made up of tiny LED, measure less than 100μm. Another way of looking at this is that MicroLEDs are simply traditional LEDs shrunk down and placed into an array.

Replacing organic material with inorganic GaN material eliminates the need of polarizing and encapsulation layer, found in OLED. Micro LED is smaller and thinner, consumes less power.

LCD manufacturers are mainly located in China, Taiwan, Korea, Japan. Almost all the lcd or TFT manufacturers have built or moved their lcd plants to China on the past decades. Top TFT lcd and oled display manufactuers including BOE, COST, Tianma, IVO from China mainland, and Innolux, AUO from Tianwan, but they have established factories in China mainland as well, and other small-middium sizes lcd manufacturers in China.

China flat display revenue has reached to Sixty billion US Dollars from 2020. there are 35 tft lcd lines (higher than 6 generation lines) in China,China is the best place for seeking the lcd manufacturers.

The first half of 2021, BOE revenue has been reached to twenty billion US dollars, increased more than 90% than thesame time of 2020, the main revenue is from TFT LCD, AMoled. BOE flexible amoled screens" output have been reach to 25KK pcs at the first half of 2021.the new display group Micro LED revenue has been increased to 0.25% of the total revenue as well.

Established in 1993 BOE Technology Group Co. Ltd. is the top1 tft lcd manufacturers in China, headquarter in Beijing, China, BOE has 4 lines of G6 AMOLED production lines that can make flexible OLED, BOE is the authorized screen supplier of Apple, Huawei, Xiaomi, etc,the first G10.5 TFT line is made in BOE.BOE main products is in large sizes of tft lcd panel,the maximum lcd sizes what BOE made is up to 110 inch tft panel, 8k resolution. BOE is the bigger supplier for flexible AM OLED in China.

As the market forecast of 2022, iPhone OLED purchasing quantity would reach 223 million pcs, more 40 million than 2021, the main suppliers of iPhone OLED screen are from Samsung display (61%), LG display (25%), BOE (14%). Samsung also plan to purchase 3.5 million pcs AMOLED screen from BOE for their Galaxy"s screen in 2022.

Technology Co., Ltd), established in 2009. CSOT is the company from TCL, CSOT has eight tft LCD panel plants, four tft lcd modules plants in Shenzhen, Wuhan, Huizhou, Suzhou, Guangzhou and in India. CSOTproviding panels and modules for TV and mobile

three decades.Tianma is the leader of small to medium size displays in technologyin China. Tianma have the tft panel factories in Shenzhen, Shanhai, Chendu, Xiamen city, Tianma"s Shenzhen factory could make the monochrome lcd panel and LCD module, TFT LCD module, TFT touch screen module. Tianma is top 1 manufactures in Automotive display screen and LTPS TFT panel.

Tianma and BOE are the top grade lcd manufacturers in China, because they are big lcd manufacturers, their minimum order quantity would be reached 30k pcs MOQ for small sizes lcd panel. price is also top grade, it might be more expensive 50%~80% than the market price.

Panda electronics is established in 1936, located in Nanjing, Jiangshu, China. Panda has a G6 and G8.6 TFT panel lines (bought from Sharp). The TFT panel technologies are mainly from Sharp, but its technology is not compliance to the other tft panels from other tft manufactures, it lead to the capacity efficiency is lower than other tft panel manufacturers. the latest news in 2022, Panda might be bougt to BOE in this year.

Established in 2005, IVO is located in Kunsan,Jiangshu province, China, IVO have more than 3000 employee, 400 R&D employee, IVO have a G-5 tft panel production line, IVO products are including tft panel for notebook, automotive display, smart phone screen. 60% of IVO tft panel is for notebook application (TOP 6 in the worldwide), 23% for smart phone, 11% for automotive.

Besides the lcd manufacturers from China mainland,inGreater China region,there are other lcd manufacturers in Taiwan,even they started from Taiwan, they all have built the lcd plants in China mainland as well,let"s see the lcd manufacturers in Taiwan:

Innolux"s 14 plants in Taiwan possess a complete range of 3.5G, 4G, 4.5G, 5G, 6G, 7.5G, and 8.5G-8.6G production line in Taiwan and China mainland, offering a full range of large/medium/small LCD panels and touch-control screens.including 4K2K ultra-high resolution, 3D naked eye, IGZO, LTPS, AMOLED, OLED, and touch-control solutions,full range of TFT LCD panel modules and touch panels, including TV panels, desktop monitors, notebook computer panels, small and medium-sized panels, and medical and automotive panels.

AUO is the tft lcd panel manufacturers in Taiwan,AUO has the lcd factories in Tianma and China mainland,AUOOffer the full range of display products with industry-leading display technology,such as 8K4K resolution TFT lcd panel, wide color gamut, high dynamic range, mini LED backlight, ultra high refresh rate, ultra high brightness and low power consumption. AUO is also actively developing curved, super slim, bezel-less, extreme narrow bezel and free-form technologies that boast aesthetic beauty in terms of design.Micro LED, flexible and foldable AMOLED, and fingerprint sensing technologies were also developed for people to enjoy a new smart living experience.

Hannstar was found in 1998 in Taiwan, Hannstar display hasG5.3 TFT-LCD factory in Tainan and the Nanjing LCM/Touch factories, providing various products and focus on the vertical integration of industrial resources, creating new products for future applications and business models.

driver, backlight etc ,then make it to tft lcd module. so its price is also more expensive than many other lcd module manufacturers in China mainland.

Maclight is a China based display company, located in Shenzhen, China. ISO9001 certified, as a company that more than 10 years working experiences in display, Maclight has the good relationship with top tft panel manufacturers, it guarantee that we could provide a long term stable supply in our products, we commit our products with reliable quality and competitive prices.

Maclight products included monochrome lcd, TFT lcd module and OLED display, touch screen module, Maclight is special in custom lcd display, Sunlight readable tft lcd module, tft lcd with capacitive touch screen. Maclight is the leader of round lcd display. Maclight is also the long term supplier for many lcd companies in USA and Europe.

If you want tobuy lcd moduleorbuy tft screenfrom China with good quality and competitive price, Maclight would be a best choice for your glowing business.

Beijing-based market researcher Sigmaintell Consulting said shipments of LCD TV panels worldwide totaled 140 million pieces in the year"s first half, up 3.6 percent compared with the same period a year ago.

The shipment of BOE"s LCD TV panels stood at 27.6 million in the Jan-June period while LG Display followed with 22.7 million, down 4.5 percent year-on-year. Innolux Display Group was in third place, having shipped 21.9 million units.

Shenzhen China Star Optoelectronics Technology Co Ltd, a subsidiary of consumer electronics giant TCL Corp, ranked fourth, shipping 19.3 million pieces of TV panels. Chinese panel makers accounted for a 45.8 percent share in the global LCD TV panel market.

Separately, BOE"s Gen 10.5 TFTLCD production line has entered operation in Hefei, Anhui province. The plant will produce high-definition LCD screens of 65 inches and above.

CSOT also announced in November last year that its Gen 11 TFT-LCD and active-matrix OLED production line had officially began operation. The project will produce 43-inch, 65-inch and 75-inch liquid crystal display screens.

Li added flexible organic light-emitting diode (OLED) will not be able to immediately trigger customer purchases at this time although most current consumers are technophiles and high-end users.

Compared with traditional LCD display panels, OLED has a fast response rate, wide viewing angles, high-contrast images and richer colors. It is thinner and can be made flexible.

Wen Jianping, president of All View Cloud, a Beijing-based consultancy specializing in home appliances, said the price of OLED TVs will continue to fall in the next two years, with sales rising to 380,000 units this year, and reaching 800,000 units in 2020.

"The penetration rate of such TVs in China is relatively low, while such type of TV has become the representative of high-end TVs in the United States, Europe, Japan and other countries," said Park Changhyuk, general manager of LG Display China"s promotion unit.

Samsung Display, one of the leading amorphous silicon (a-Si) TFT LCD manufacturers for the past 20 years, is shutting down its first G7 line, Line 7-1, from as early as the end of July and there are rumors of a few more fab closures to come. Its a-Si TFT LCD footprint is expected to shrink dramatically over the next few years with potentially just one a-Si fab in operation in 2018 to serve its market-leading TV business.

Panasonic LCD is also rumored to be shutting down most or all of its G8.5 line. Based on the near term decline in a-Si TFT LCD capacity, Credit Suisse upgraded AUO and Innolux on this news and their shares surged.

Samsung’s Line 7-1, which began operation in October 2004 and production in May 2005, is rumored to be shutting down from the 30th July through the end of the year. It has a unique glass size (1,870 x 2,200mm), which was the largest in the world at the time of its introduction and is optimized for both 40” and 46” LCD TV panel production. It was also the site of the Samsung-Sony joint venture, S-LCD, established in April 2004. This line enabled Samsung and Sony to rapidly take share from smaller G6 fabs optimized for 32” and 37” panels. During that time, the two companies competed aggressively in retail while establishing 40” and 46” as mainstream sizes. The JV with Sony ended in 2011. S-LCD also built an 8th gen fab that began production in Q3’07, and Samsung built a second G7 line (L7-2) on its own, with even more capacity at over 170,000 substrates per month. L7-2 began production in Q3’08.

Displays are already a weak spot in Samsung’s financial performance. The category caused the device solutions division to be the only one to suffer a loss among all major divisions within Samsung in Q1’16, and its revenues of KRW6 trillion ($5.2 billion) were the lowest in two years. The display division alone posted an operating loss of KRW270 billion ($233 million) in Q1’16 resulting in an operating margin of -4.4%. While Samsung has a number of technology and capacity advantages in OLEDs for mobile displays, its a-Si TFT LCD business has matured and is increasingly becoming commoditized, as new entrants from China with government support are taking share. In addition, most of the a-Si TFT LCD market segments have become stagnant or are in decline, which points to more losses given the growing Chinese competition. On the other hand, OLEDs and flexible OLEDs are poised for rapid growth as they take share. As a result, it makes good business sense for Samsung to exit much of the a-Si TFT LCD market.

Line 7-2, newer and larger than 7-1, is also rumored to be for sale and is expected to be shut down in 2017, but probably depends on profitability. Line 7-2 has been producing 3-4 million 40” panels and 300,000 75” panels annually, as well as monitor panels. Twinstar is also a potential customer for the manufacturing equipment and this line may also be utilized for OLED production in the future.

Samsung is expected to begin shipping for the first OLED iPhone in volume from Q3’17, with input capacity from the modified Line 7 ramping up to between 90,000 and 120,000 substrates per month. Apple is expected to purchase 70 million OLED panels in 2017, according to sources.

That is not all, however. Line 6, Samsung"s last 5th gen line with 1,100 x 1,300mm substrates and around 190,000 substrate per month capacity, is also expected to be shut down, according to industry insiders. That line, which features a-Si and oxide TFT LCD production, has been producing tablet, notebook PC and LCD monitor panels. Those markets have also been hit by stagnant demand, growing competition from China, commoditization and declining margins. This line is expected to be shut down between the end of 2016 and 2017. Line 6 is predicted to be converted to a semiconductor facility, making application processors for smartphones and tablets.

If Samsung closes down Line 6 and Lines 7-1 and 7-2, its a-Si production will be down to just two G8.5 fabs: one in Suzhou, China and one in Tangjong, Korea. The Suzhou fab, ramping to over 100,000 substrates per month, is also rumored to be a candidate for sale with Chinese and Indian TFT LCD suppliers as potential customers. If Samsung licenses its latest a-Si TFT LCD or oxide TFT LCD technology, that would certainly make the sale more attractive. This means Samsung would have just one a-Si TFT LCD fab: Line 8.

I believe Line 8 will be sufficient for Samsung to support its internal TV brand with leading edge panels for the TV market as it has a monthly capacity of 400,000 2,200 x 2,500mm (G8.5) substrates. Samsung’s TV business would likely continue to outsource its low-end panels for its TVs to other LCD manufacturers and focus this fab on higher margin products such as 8k, HDR, QD WCG, etc. I cannot see Samsung abandoning LCD TV panel production until it believes OLEDs are cost effective enough to takeover the mid-range high end of the TV market. This likely means not until OLED materials can be inkjet printed, Samsung is still likely to focus all of its TV panel production on LCDs.

If this occurs as described, Samsung Display"s output of 42" and larger panels would be LCD, and sub-42" would be OLED, although it may not have much production between 15" and 40". This would be an amazing, but expected, transformation given the supply/demand and profitability outlook for the a-Si market.

2016 and 2017 are expected to be back-to-back years of over $12 billion in LCD/OLED equipment spending. Unless these fabs struggle with their ramp and their yields, the a-Si market will continue to be oversupplied although conditions should improve in the 40”-43” market in the second half of 2016.

Rather than battle it out with government-subsidized Chinese players, Samsung appears to be accelerating its exit of the increasingly commoditized a-Si TFT LCD market. This should please its shareholders, especially if it can sell all its old equipment and license its a-Si technology for a royalty, but will be harmful to some of its suppliers. It is also likely to protect its TV business by holding onto its most competitive fab, but will increasingly become an OLED company. Interesting questions as a result of these moves include:

A couple of days after this article was originally posted, it was claimed - and later denied by a company official - that Samsung will move its a-Si TFT LCD operations out of Samsung Display and into Samsung Electronics. Such a move aligns perfectly with its intention, indicated above, to close its a-Si fabs as in a couple of years its a-Si TFT LCD operations may be limited to providing panels to its TV business. - Ross Young

Ross Young is the CEO and Founder of Display Supply Chain Consultants. He also serves on the Board of Directors of publicly traded touch sensor manufacturer UniPixel and diamond semiconductor developer Akhan Technologies. He previously founded DisplaySearch and served as its CEO from 1996 - 2007 where he launched most of their categories of coverage. He has also held executive positions at Samsung LCD and IMS Research.

Beijing-based market researcher Sigmaintell Consulting said shipments of LCD TV panels worldwide totaled 140 million pieces in the year"s first half, up 3.6 percent compared with the same period a year ago.

The shipment of BOE"s LCD TV panels stood at 27.6 million in the Jan-June period while LG Display followed with 22.7 million, down 4.5 percent year-on-year. Innolux Display Group was in third place, having shipped 21.9 million units.

Shenzhen China Star Optoelectronics Technology Co Ltd, a subsidiary of consumer electronics giant TCL Corp, ranked fourth, shipping 19.3 million pieces of TV panels. Chinese panel makers accounted for a 45.8 percent share in the global LCD TV panel market.

Separately, BOE"s Gen 10.5 TFTLCD production line has entered operation in Hefei, Anhui province. The plant will produce high-definition LCD screens of 65 inches and above.

CSOT also announced in November last year that its Gen 11 TFT-LCD and active-matrix OLED production line had officially began operation. The project will produce 43-inch, 65-inch and 75-inch liquid crystal display screens.

Li added flexible organic light-emitting diode (OLED) will not be able to immediately trigger customer purchases at this time although most current consumers are technophiles and high-end users.

Compared with traditional LCD display panels, OLED has a fast response rate, wide viewing angles, high-contrast images and richer colors. It is thinner and can be made flexible.

Wen Jianping, president of All View Cloud, a Beijing-based consultancy specializing in home appliances, said the price of OLED TVs will continue to fall in the next two years, with sales rising to 380,000 units this year, and reaching 800,000 units in 2020.

"The penetration rate of such TVs in China is relatively low, while such type of TV has become the representative of high-end TVs in the United States, Europe, Japan and other countries," said Park Changhyuk, general manager of LG Display China"s promotion unit.

Shipments of liquid crystal display (LCD) TV panels worldwide totaled 284 million last year, up 8.4 percent year-on-year, according to a report released by Beijing-based market researcher Sigmaintell Consulting.

BOE Technology Group Co Ltd, a leading domestic display producer, topped the global list for LCD TV panel shipments, shipping 54.3 million TV panels last year, up 27 percent year-on-year. LG Display followed with 48.6 million panels and Innolux Display Group with 45.1 million.

Sigmaintell estimated that large-screen TVs will witness explosive growth, and the proportion of 65-inch panels will increase to 7.3 percent in 2019, fuelled by the increased demand from both the consumer and commercial markets.

After BOE"s Gen 10.5 TFT-LCD production line entered operation in Hefei, Anhui province, in December 2017, the company"s production capacity increased by over 40 percent in 2018 year-on-year, according to Sigmaintell. The plant produces high-definition LCD screens of 65 inches and above.

BOE announced in November it had developed China"s first 55-inch 4K organic LED display using inkjet printing technology, which will break South Korea"s monopoly in the field of large-sized OLED panels.

"The traditional LCD TV market is almost saturated and OLED TVs with innovative designs are in line with ongoing consumption upgrading," said Dong Min, vice-president of market consultancy All View Cloud.

Shenzhen China Star Optoelectronics Technology Co Ltd, a subsidiary of Chinese consumer electronics giant TCL Corp, said in November its Gen 11 TFT-LCD and active-matrix OLED production line had officially entered operation. The facility produces 43-inch, 65-inch and 75-inch LCD screens.

In addition to large screens, the company started to build a sixth-generation low-temperature polysilicon active-matrix OLED display panel production line in Wuhan, Hubei province, in 2017.

As I had hinted, Apple ended uptapping BOE Technologyfor their iPhone 13 OLED screens.BOE will initially split orders for the 6.1-inch iPhone 13 displays with Samsung Display, with the Chinese company"s share accounting for up to 20% of the total, sources said. Under the most optimistic scenario, BOE aims to grab 40% of orders for this model from the South Korean display giant, the people added.

Taiwanese and Japanese display makers have lost market share to the Chinese. Right now, the OLED space is between the South Korean players - LG and Samsung - and BOE.

With $19 billion in revenue, they are the world’s second largest OLED vendor and the biggest seller of flat panel displays. They are China"s most advanced display technologies company - the only one equipped to produce LCDs in the 6th generation category or above.

Compared to their predecessors, TFT-LCDs are capable of delivering better contrast ratios and refresh rates. Today, they are widely used in televisions, laptops displays, monitors, and mobile phones.

The TFT-LCD product is at its heart a semiconductor like those made by TSMC and Intel. Which means being subjected to the same brutal up and down business cycles every 1.5 to 2 years that frequently overwhelm other semiconductor sectors. Building up supply capacity is extremely capital-intensive and takes years of lead time. And margins are tight - BOE makes less than 15% gross margin.

First, the STN-LCD and OLED businesses in 2001. These were not that strategically important. STN-LCD was an older technology even then. More power-efficient and cheaper to manufacture than TFT-LCD, but with the drawback of lower image quality and slower response times. OLED screens for their part were still at the prototype stage at the time.

A year later, Hynix sold its valuable TFT-LCD display arm to BOE for $350 million. Crucially, the sale included Hynix"s comprehensive intellectual property and patents for its 4th and 5th-generation TFT-LCD technologies. Hynix had been doing TFT-LCD research in the US for years by then so this was excellent stuff.

As expected, BOE absorbed Hynix"s display technologies and capacity to rapidly catch up to the market incumbents. Backed by the Beijing city government"s financial firepower, the company invested over a billion dollars to build its first cutting edge LCD factory.

TPV"s upstream and downstream experience helped BOE turn a rare profit in 2003. By 2006, it was China"s leading TFT-LCD maker and ninth largest in the world. As the stars of Chinese tech companies like Xiaomi and Huawei have risen, BOE as a core displays supplier has also risen alongside them.

BOE"s core business lines are in display technology. They run factories in nine cities, including their leading edge 10.5 generation TFT-LCD production lines in the cities of Beijing and Hefei, Anhui.

They are especially prolific in the OLED space, with the third most patents in OLED technologies behind Samsung Display and LG Display. The whole ranking is dominated by East Asian companies, with Kodak the only American on the list.

The company is also making moves into the IoT and health spaces. IoT items like intelligent windows and smart TVs, kind of makes sense. But medical? I know, it seems a little weird that a display company should expand into hospitals and medical research.

BOE is certainly a semiconductor national champion to be proud of, but it achieved this status only through a great deal of struggle. And it seems to me that the company is trying a whole lot of things in order to grow beyond its core TFT-LCD business. They have bet a whole lot on OLED being that thing.

While BOE has provided OLED panels for some of Huawei"s flagship Mate phones, its market share still lags behind Samsung and LG Display. The same dynamics that kept BOE out of the TFT-LCD market also apply to OLEDs. This is critical as it seems inevitable that OLED will be the dominant display technology going forward.

Perhaps that will change with the rumors that BOE"s OLED screens have finally passed Apple"s quality control checks. Joining the ranks of Apple"s iPhone suppliers can help send the company forward towards getting the same type dominance in OLED panels that it now has in other display markets.

Our company specializes in developing solutions that arerenowned across the globe and meet expectations of the most demanding customers. Orient Display can boast incredibly fast order processing - usually it takes us only 4-5 weeks to produce LCD panels and we do our best to deliver your custom display modules, touch screens or TFT and IPS LCD displays within 5-8 weeks. Thanks to being in the business for such a noteworthy period of time, experts working at our display store have gained valuable experience in the automotive, appliances, industrial, marine, medical and consumer electronics industries. We’ve been able to create top-notch, specialized factories that allow us to manufacture quality custom display solutions at attractive prices. Our products comply with standards such as ISO 9001, ISO 14001, QC 080000, ISO/TS 16949 and PPM Process Control. All of this makes us the finest display manufacturer in the market.

An LCD, or Liquid Crystal Display, is a type of screen that is used in many computers, TVs, and cell phones. LCDs are very thin, but are actually composed of several layers. Those layers include two polarized panels, with a liquid crystal solution between them. Light is projected through the layer of liquid crystals and is colorized, which produces the visible image. The liquid crystals do no emit light themselves, so LCDs require a backlight.Two types of LCDs are primarily found in cell phones: TFT (thin-film transistor) and IPS (in-plane-switching). TFT LCDs use the thin-film transistor technology to improve image quality, while IPS-LCDs improve on the viewing angles and power consumption of TFT LCDs.

TFT stands for Thin Film Transistor, and is a type of technology used to improve the image quality of an LCD. Each pixel on a TFT-LCD has its own transistor on the glass itself, which offers more control over the images and colors that it renders. While TFT-LCDs can deliver sharp images, they also tend to offer relatively poor viewing angles, meaning they look best when viewed head-on. If you view a TFT-LCD from the side, it can be difficult to see.

OLED, or Organic Light-Emitting Diode, displays are able to deliver sharper and brighter images than LCDs, while also using less power. Unlike an LCD, which requires a backlight, OLED screens can emit their own light. This allows OLED screens to display brighter, sharper images and text, and to offer better viewing angles. It also means that OLED screens are thinner and consume less power than their LCD counterparts.

OLED screens also offer faster refresh rates than LCDs, so they can deliver smoother video playback. But there are a few drawbacks to OLED displays. For one, the organic materials used to make them have a more limited lifetime than the components of other display types. OLED screens also have the potential to be more easily damaged by water or other liquids.

Organic Light-Emitting Diodes (OLED) is a flat-screen display technology that surpasses the (Liquid Crystal Display (LCD). Its characteristics include thin, light, small, intricate, sensitive, bright colors, and power-saving. In the near future, television screens as thin as paper, and scroll-type e-paper will no longer be dreams.

AMOLED is the abbreviation for Active-Matrix OLED. AMOLED displays actually pair part of a traditional TFT display with an OLED display. This allows them to offer faster response times than regular OLED displays, which can be prone to ghosting when displaying fast-moving images. AMOLED displays also offer greater power savings than traditional OLED displays. Like traditional OLED displays, though, AMOLED displays may have a more limited lifetime, because of the organic materials used to make them. Also, when viewed in direct sunlight, the images on an AMOLED display are not as bright as what you"d see on an LCD.

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An organic light-emitting diode (OLED or organic LED), also known as organic electroluminescent (organic EL) diode,light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compound that emits light in response to an electric current. This organic layer is situated between two electrodes; typically, at least one of these electrodes is transparent. OLEDs are used to create digital displays in devices such as television screens, computer monitors, and portable systems such as smartphones and handheld game consoles. A major area of research is the development of white OLED devices for use in solid-state lighting applications.

There are two main families of OLED: those based on small molecules and those employing polymers. Adding mobile ions to an OLED creates a light-emitting electrochemical cell (LEC) which has a slightly different mode of operation. An OLED display can be driven with a passive-matrix (PMOLED) or active-matrix (AMOLED) control scheme. In the PMOLED scheme, each row and line in the display is controlled sequentially, one by one,thin-film transistor (TFT) backplane to directly access and switch each individual pixel on or off, allowing for higher resolution and larger display sizes.

OLED is fundamentally different from LED which is based on a p-n diode structure. In LEDs doping is used to create p- and n- regions by changing the conductivity of the host semiconductor. OLEDs do not employ a p-n structure. Doping of OLEDs is used to increase radiative efficiency by direct modification of the quantum-mechanical optical recombination rate. Doping is additionally used to determine the wavelength of photon emission.

An OLED display works without a backlight because it emits its own visible light. Thus, it can display deep black levels and can be thinner and lighter than a liquid crystal display (LCD). In low ambient light conditions (such as a dark room), an OLED screen can achieve a higher contrast ratio than an LCD, regardless of whether the LCD uses cold cathode fluorescent lamps or an LED backlight. OLED displays are made in the same way as LCDs, but after TFT (for active matrix displays), addressable grid (for passive matrix displays) or indium-tin oxide (ITO) segment (for segment displays) formation, the display is coated with hole injection, transport and blocking layers, as well with electroluminescent material after the first 2 layers, after which ITO or metal may be applied again as a cathode and later the entire stack of materials is encapsulated. The TFT layer, addressable grid or ITO segments serve as or are connected to the anode, which may be made of ITO or metal.transparent displays being used in smartphones with optical fingerprint scanners and flexible displays being used in foldable smartphones.

In 1960, Martin Pope and some of his co-workers at New York University developed ohmic dark-injecting electrode contacts to organic crystals.work functions) for hole and electron injecting electrode contacts. These contacts are the basis of charge injection in all modern OLED devices. Pope"s group also first observed direct current (DC) electroluminescence under vacuum on a single pure crystal of anthracene and on anthracene crystals doped with tetracene in 1963volts. The proposed mechanism was field-accelerated electron excitation of molecular fluorescence.

Research into polymer electroluminescence culminated in 1990, with J. H. Burroughes et al. at the Cavendish Laboratory at Cambridge University, UK, reporting a high-efficiency green light-emitting polymer-based device using 100nm thick films of poly(p-phenylene vinylene).plastic electronics and OLED research and device production grew rapidly.et al. at Yamagata University, Japan in 1995, achieved the commercialization of OLED-backlit displays and lighting.

In 1999, Kodak and Sanyo had entered into a partnership to jointly research, develop, and produce OLED displays. They announced the world"s first 2.4-inch active-matrix, full-color OLED display in September the same year.

Manufacturing of small molecule OLEDs was started in 1997 by Pioneer Corporation, followed by TDK in 2001 and Samsung-NEC Mobile Display (SNMD), which later became one of the world"s largest OLED display manufacturers - Samsung Display, in 2002.

The Sony XEL-1, released in 2007, was the first OLED television.Universal Display Corporation, one of the OLED materials companies, holds a number of patents concerning the commercialization of OLEDs that are used by major OLED manufacturers around the world.

On 5 December 2017, JOLED, the successor of Sony and Panasonic"s printable OLED business units, began the world"s first commercial shipment of inkjet-printed OLED panels.

A typical OLED is composed of a layer of organic materials situated between two electrodes, the anode and cathode, all deposited on a substrate. The organic molecules are electrically conductive as a result of delocalization of pi electrons caused by conjugation over part or all of the molecule. These materials have conductivity levels ranging from insulators to conductors, and are therefore considered organic semiconductors. The highest occupied and lowest unoccupied molecular orbitals (HOMO and LUMO) of organic semiconductors are analogous to the valence and conduction bands of inorganic semiconductors.

Originally, the most basic polymer OLEDs consisted of a single organic layer. One example was the first light-emitting device synthesised by J. H. Burroughes et al., which involved a single layer of poly(p-phenylene vinylene). However multilayer OLEDs can be fabricated with two or more layers in order to improve device efficiency. As well as conductive properties, different materials may be chosen to aid charge injection at electrodes by providing a more gradual electronic profile,quantum efficiency (up to 19%) by using a graded heterojunction.

During operation, a voltage is applied across the OLED such that the anode is positive with respect to the cathode. Anodes are picked based upon the quality of their optical transparency, electrical conductivity, and chemical stability.electrons flows through the device from cathode to anode, as electrons are injected into the LUMO of the organic layer at the cathode and withdrawn from the HOMO at the anode. This latter process may also be described as the injection of electron holes into the HOMO. Electrostatic forces bring the electrons and the holes towards each other and they recombine forming an exciton, a bound state of the electron and hole. This happens closer to the electron-transport layer part of the emissive layer, because in organic semiconductors holes are generally more mobile than electrons. The decay of this excited state results in a relaxation of the energy levels of the electron, accompanied by emission of radiation whose frequency is in the visible region. The frequency of this radiation depends on the band gap of the material, in this case the difference in energy between the HOMO and LUMO.

Experimental research has proven that the properties of the anode, specifically the anode/hole transport layer (HTL) interface topography plays a major role in the efficiency, performance, and lifetime of organic light-emitting diodes. Imperfections in the surface of the anode decrease anode-organic film interface adhesion, increase electrical resistance, and allow for more frequent formation of non-emissive dark spots in the OLED material adversely affecting lifetime. Mechanisms to decrease anode roughness for ITO/glass substrates include the use of thin films and self-assembled monolayers. Also, alternative substrates and anode materials are being considered to increase OLED performance and lifetime. Possible examples include single crystal sapphire substrates treated with gold (Au) film anodes yielding lower work functions, operating voltages, electrical resistance values, and increasing lifetime of OLEDs.

Balanced charge injection and transfer are required to get high internal efficiency, pure emission of luminance layer without contaminated emission from charge transporting layers, and high stability. A common way to balance charge is optimizing the thickness of the charge transporting layers but is hard to control. Another way is using the exciplex. Exciplex formed between hole-transporting (p-type) and electron-transporting (n-type) side chains to localize electron-hole pairs. Energy is then transferred to luminophore and provide high efficiency. An example of using exciplex is grafting Oxadiazole and carbazole side units in red diketopyrrolopyrrole-doped Copolymer main chain shows improved external quantum efficiency and color purity in no optimized OLED.

Organic small-molecule electroluminescent materials have the advantages of a wide variety, easy to purify, and strong chemical modifications. In order to make the luminescent materials to emit light as required, some chromophores or unsaturated groups such as alkene bonds and benzene rings will usually be introduced in the molecular structure design to change the size of the conjugation range of the material, so that the photophysical properties of the material changes. In general, the larger the range of π-electron conjugation system, the longer the wavelength of light emitted by the material. For instance, with the increase of the number of benzene rings, the fluorescence emission peak of benzene, naphthalene, anthracene,anthracenes, biphenyl acetylene aryl derivatives, coumarin derivatives,Ching W. Tang et al.Eastman Kodak. The term OLED traditionally refers specifically to this type of device, though the term SM-OLED is also in use.

Molecules commonly used in OLEDs include organometallic chelates (for example Alq3, used in the organic light-emitting device reported by Tang et al.), fluorescent and phosphorescent dyes and conjugated dendrimers. A number of materials are used for their charge transport properties, for example triphenylamine and derivatives are commonly used as materials for hole transport layers.perylene, rubrene and quinacridone derivatives are often used.3 has been used as a green emitter, electron transport material and as a host for yellow and red emitting dyes.

Because of the structural flexibility of small-molecule electroluminescent materials, thin films can be prepared by vacuum vapor deposition, which is more expensive and of limited use for large-area devices. The vacuum coating system, however, can make the entire process from film growth to OLED device preparation in a controlled and complete operating environment, helping to obtain uniform and stable films, thus ensuring the final fabrication of high-performance OLED devices.However, small molecule organic dyes are prone to fluorescence quenching

Polymer light-emitting diodes (PLED, P-OLED), also light-emitting polymers (LEP), involve an electroluminescent conductive polymer that emits light when connected to an external voltage. They are used as a thin film for full-spectrum colour displays. Polymer OLEDs are quite efficient and require a relatively small amount of power for the amount of light produced.

Vacuum deposition is not a suitable method for forming thin films of polymers. If the polymeric OLED films are made by vacuum vapor deposition, the chain elements will be cut off and the original photophysical properties will be compromised. However, polymers can be processed in solution, and spin coating is a common method of depositing thin polymer films. This method is more suited to forming large-area films than thermal evaporation. No vacuum is required, and the emissive materials can also be applied on the substrate by a technique derived from commercial inkjet printing.Langmuir-Blodgett film.

Phosphorescent organic light-emitting diodes use the principle of electrophosphorescence to convert electrical energy in an OLED into light in a highly efficient manner,

The heavy metal atom at the centre of these complexes exhibits strong spin-orbit coupling, facilitating intersystem crossing between singlet and triplet states. By using these phosphorescent materials, both singlet and triplet excitons will be able to decay radiatively, hence improving the internal quantum efficiency of the device compared to a standard OLED where only the singlet states will contribute to emission of light.

Applications of OLEDs in solid state lighting require the achievement of high brightness with good CIE coordinates (for white emission). The use of macromolecular species like polyhedral oligomeric silsesquioxanes (POSS) in conjunction with the use of phosphorescent species such as Ir for printed OLEDs have exhibited brightnesses as high as 10,000cd/m2.

a) Bottom-emitting and b) top-emitting OLED structures; c,d) Schematic diagrams based on bottom-emitting and top-emitting OLEDs with low and high contrast ratio, respectively.

The bottom-emission organic light-emitting diode (BE-OLED) is the architecture that was used in the early-stage AMOLED displays. It had a transparent anode fabricated on a glass substrate, and a shiny reflective cathode. Light is emitted from the transparent anode direction. To reflect all the light towards the anode direction, a relatively thick metal cathode such as aluminum is used. For the anode, high-transparency indium tin oxide (ITO) was a typical choice to emit as much light as possible.thin film transistor (TFT) substrate, and the area from which light can be extracted is limited and the light emission efficiency is reduced.

An alternative configuration is to switch the mode of emission. A reflective anode, and a transparent (or more often semi-transparent) cathode are used so that the light emits from the cathode side, and this configuration is called top-emission OLED (TE-OLED). Unlike BEOLEDs where the anode is made of transparent conductive ITO, this time the cathode needs to be transparent, and the ITO material is not an ideal choice for the cathode because of a damage issue due to the sputtering process.transmittance and high conductivity.

Since both electrodes are reflective in TEOLED, light reflections can happen within the diode, and they cause more complex interferences than those in BEOLEDs. In addition to the two-beam interference, there exists a multi-resonance interference between two electrodes. Because the structure of TEOLEDs is similar to that of the Fabry-Perot resonator or laser resonator, which contains two parallel mirrors comparable to the two reflective electrodes),

In the case of OLED, that means the cavity in a TEOLED could be especially designed to enhance the light output intensity and color purity with a narrow band of wavelengths, without consuming more power. In TEOLEDs, the microcavity effect commonly occurs, and when and how to restrain or make use of this effect is indispensable for device design. To match the conditions of constructive interference, different layer thicknesses are applied according to the resonance wavelength of that specific color. The thickness conditions are carefully designed and engineered according to the peak resonance emitting wavelengths of the blue (460 nm), green (530 nm), and red (610 nm) color LEDs. This technology greatly improves the light-emission efficiency of OLEDs, and are able to achieve a wider color gamut due to high color purity.

In "white + color filter method," red, green, and blue emissions are obtained from the same white-light LEDs using different color filters.uneven degradation rate of blue pixels vs. red and green pixels. Disadvantages of this method are low color purity and contrast. Also, the filters absorb most of the light waves emitted, requiring the background white light to be relatively strong to compensate for the drop in brightness, and thus the power consumption for such displays can be higher.

Color filters can also be implemented into bottom- and top-emission OLEDs. By adding the corresponding RGB color filters after the semi-transparent cathode, even purer wavelengths of light can be obtained. The use of a microcavity in top-emission OLEDs with color filters also contributes to an increase in the contrast ratio by reducing the reflection of incident ambient light.

Transparent OLEDs use transparent or semi-transparent contacts on both sides of the device to create displays that can be made to be both top and bottom emitting (transparent). TOLEDs can greatly improve contrast, making it much easier to view displays in bright sunlight.Head-up displays, smart windows or augmented reality applications.

Stacked OLEDs use a pixel architecture that stacks the red, green, and blue subpixels on top of one another instead of next to one another, leading to substantial increase in gamut and color depth,

In contrast to a conventional OLED, in which the anode is placed on the substrate, an Inverted OLED uses a bottom cathode that can be connected to the drain end of an n-channel TFT especially for the low cost amorphous silicon TFT backplane useful in the manufacturing of AMOLED displays.

Although the shadow-mask patterning method is a mature technology used from the first OLED manufacturing, it causes many issues like dark spot formation due to mask-substrate contact or misalignment of the pattern due to the deformation of shadow mask. Such defect formation can be regarded as trivial when the display size is small, however it causes serious issues when a large display is manufactured, which brings significant production yield loss. To circumvent such issues, white emission devices with 4-sub-pixel color filters (white, red, green and blue) have been used for large televisions. In spite of the light absorption by the color filter, state-of-the-art OLED televisions can reproduce color very well, such as 100% NTSC, and consume little power at the same time. This is done by using an emission spectrum with high human-eye sensitivity, special color filters with a low spectrum overlap, and performance tuning with color statistics into consideration.

Like ink jet material deposition, inkjet etching (IJE) deposits precise amounts of solvent onto a substrate designed to selectively dissolve the substrate material and induce a structure or pattern. Inkjet etching of polymer layers in OLED"s can be used to increase the overall out-coupling efficiency. In OLEDs, light produced from the emissive layers of the OLED is partially transmitted out of the device and partially trapped inside the device by total internal reflection (TIR). This trapped light is wave-guided along the interior of the device until it reaches an edge where it is dissipated by either absorption or emission. Inkjet etching can be used to selectively alter the polymeric layers of OLED structures to decrease overall TIR and increase out-coupling efficiency of the OLED. Compared to a non-etched polymer layer, the structured polymer layer in the OLED structure from the IJE process helps to decrease the TIR of the OLED device. IJE solvents are commonly organic instead of water-based due to their non-acidic nature and ability to effectively dissolve materials at temperatures under the boiling point of water.

Transfer-printing is an emerging technology to assemble large numbers of parallel OLED and AMOLED devices efficiently. It takes advantage of standard metal deposition, photolithography, and etching to create alignment marks commonly on glass or other device substrates. Thin polymer adhesive layers are applied to enhance resistance to particles and surface defects. Microscale ICs are transfer-printed onto the adhesive surface and then baked to fully cure adhesive layers. An additional photosensitive polymer layer is applied to the substrate to account for the topography caused by the printed ICs, reintroducing a flat surface. Photolithography and etching removes some polymer layers to uncover conductive pads on the ICs. Afterwards, the anode layer is applied to the device backplane to form the bottom electrode. OLED layers are applied to the anode layer with conventional vapor deposition, and covered with a conductive metal electrode layer. As of 2011mm × 400mm. This size limit needs to expand for transfer-printing to become a common process for the fabrication of large OLED/AMOLED displays.

Experimental OLED displays using conventional photolithography techniques instead of FMMs have been demonstrated, allowing for large substrate sizes (as it eliminates the need for a mask that needs to be as large as the substrate) and good yield control.

For a high resolution display like a TV, a thin-film transistor (TFT) backplane is necessary to drive the pixels correctly. As of 2019, low-temperature polycrystalline silicon (LTPS)– TFT is widely used for commercial AMOLED displays. LTPS-TFT has variation of the performance in a display, so various compensation circuits have been reported.excimer laser used for LTPS, the AMOLED size was limited. To cope with the hurdle related to the panel size, amorphous-silicon/microcrystalline-silicon backplanes have been reported with large display prototype demonstrations.indium gallium zinc oxide (IGZO) backplane can also be used.

OLEDs can be printed onto any suitable substrate by an inkjet printer or even by screen printing,plasma displays. However, fabrication of the OLED substrate as of 2018 is costlier than that for TFT LCDs.registration — lining up the different printed layers to the required degree of accuracy.

OLED displays can be fabricated on flexible plastic substrates, leading to the possible fabrication of flexible organic light-emitting diodes for other new applications, such as roll-up displays embedded in fabrics or clothing. If a substrate like polyethylene terephthalate (PET)

OLEDs enable a greater contrast ratio and wider viewing angle compared to LCDs, because OLED pixels emit light directly. This also provides a deeper black level, since a black OLED display emits no light. Furthermore, OLED pixel colors appear correct and unshifted, even as the viewing angle approaches 90° from the normal.

LCDs filter the light emitted from a backlight, allowing a small fraction of light through. Thus, they cannot show true black. However, an inactive OLED element does not produce light or consume power, allowing true blacks.nm. The refractive value and the matching of the optical IMLs property, including the device structure parameters, also enhance the emission intensity at these thicknesses.

OLEDs also have a much faster response time than an LCD. Using response time compensation technologies, the fastest modern LCDs can reach response times as low as 1ms for their fastest color transition, and are capable of refresh frequencies as high as 240Hz. According to LG, OLED response times are up to 1,000 times faster than LCD,μs (0.01ms), which could theoretically accommodate refresh frequencies approaching 100kHz (100,000Hz). Due to their extremely fast response time, OLED displays can also be easily designed to be strobed, creating an effect similar to CRT flicker in order to avoid the sample-and-hold behavior seen on both LCDs and some OLED displays, which creates the perception of motion blur.

The biggest technical problem for OLEDs is the limited lifetime of the organic materials. One 2008 technical report on an OLED TV panel found that after 1,000hours, the blue luminance degraded by 12%, the red by 7% and the green by 8%.hours to half original brightness (five years at eight hours per day) when used for flat-panel displays. This is lower than the typical lifetime of LCD, LED or PDP technology; each rated for about 25,000–40,000hours to half brightness, depending on manufacturer and model. One major challenge for OLED displays is the formation of dark spots due to the ingress of oxygen and moisture, which degrades the organic material over time whether or not the display is powered.

However, some manufacturers" displays aim to increase the lifespan of OLED displays, pushing their expected life past that of LCD displays by improving light outcoupling, thus achieving the same brightness at a lower drive current.cd/m2 of luminance for over 198,000hours for green OLEDs and 62,000hours for blue OLEDs.hours for red, 1,450,000hours for yellow and 400,000hours for green at an initial luminance of 1,000cd/m2.

Degradation occurs three orders of magnitude faster when exposed to moisture than when exposed to oxygen. Encapsulation can be performed by applying an epoxy adhesive with dessicant,Atomic Layer Deposition (ALD). The encapsulation process is carried out under a nitrogen environment, using UV-curable LOCA glue and the electroluminescent and electrode material deposition processes are carried out under a high vacuum. The encapsulation and material deposition processes are carried out by a single machine, after the Thin-film transistors have been applied. The transistors are applied in a process that is the same for LCDs. The electroluminescent materials can also be applied using inkjet printing.

The OLED material used to produce blue light degrades much more rapidly than the materials used to produce other colors; in other words, blue light output will decrease relative to the other colors of light. This variation in the differential color output will change the color balance of the display, and is much more noticeable than a uniform decrease in overall luminance.

Improvements to the efficiency and lifetime of blue OLEDs is vital to the success of OLEDs as replacements for LCD technology. Considerable research has been invested in developing blue OLEDs with high external quantum efficiency, as well as a deeper blue color.

Blue TADF emitters are expected to market by 2020WOLED displays with phosphorescent color filters, as well as blue OLED displays with ink-printed QD color filters.

As an emissive display technology, OLEDs rely completely upon converting electricity to light, unlike most LCDs which are to some extent reflective. E-paper leads the way in efficiency with ~ 33% ambient light reflectivity, enabling the display to be used without any internal light source. The metallic cathode in an OLED acts as a mirror, with reflectance approaching 80%, leading to poor readability in bright ambient light such as outdoors. However, with the proper application of a circular polarizer and antireflective coatings, the diffuse reflectance can be reduced to less than 0.1%. With 10,000 fc incident illumination (typical test condition for simulating outdoor illumination), that yields an approximate photopic contrast of 5:1. Advances in OLED technologies, however, enable OLEDs to become actually better than LCDs in bright sunlight. The AMOLED display in the Galaxy S5, for example, was found to outperform all LCD displays on the market in terms of power usage, brightness and reflectance.

While an OLED will consume around 40% of the power of an LCD displaying an image that is primarily black, for the majority of images it will consume 60–80% of the power of an LCD. However, an OLED can use more than 300% power to display an image with a white background, such as a document or web site.

OLEDs use pulse width modulation to show colour/brightness gradations, so even if the display is at 100% brightness, any pixel that"s, for example, 50% grey will be off for 50% of the time, making for a subtle strobe effect. The alternative way to decrease brightness would be to decrease the constant power to the OLEDs, which would result in no screen flicker, but a noticeable change in colour balance, getting worse as brightness decreases.

Almost all OLED manufacturers rely on material deposition equipment that is only made by a handful of companies,Canon Tokki, a unit of Canon Inc. Canon Tokki is reported to have a near-monopoly of the giant OLED-manufacturing vacuum machines, notable for their 100-metre (330 ft) size.Apple has relied solely on Canon Tokki in its bid to introduce its own OLED displays for the iPhones released in 2017.

OLED technology is used in commercial applications such as displays for mobile phones and portable digital media players, car radios and digital cameras among others, as well as lighting.Philips Lighting has made OLED lighting samples under the brand name "Lumiblade" available onlineNovaled AG based in Dresden, Germany, introduced a line of OLED desk lamps called "Victory" in September, 2011.

Nokia introduced OLED mobile phones including the N85 and the N86 8MP, both of which feature an AMOLED display. OLEDs have also been used in most Motorola and Samsung color cell phones, as well as some HTC, LG and Sony Ericsson models.ZEN V, the iriver clix, the Zune HD and the Sony Walkman X Series.

The Google and HTC Nexus One smartphone includes an AMOLED screen, as does HTC"s own Desire and Legend phones. However, due to supply shortages of the Samsung-produced displays, certain HTC models will use Sony"s SLCD displays in the future,Nexus S smartphone will use "Super Clear LCD" instead in some countries.

OLED displays were used in watches made by Fossil (JR-9465) and Diesel (DZ-7086). Other manufacturers of OLED panels include Anwell Technologies Limited (Hong Kong),AU Optronics (Taiwan),Chimei Innolux Corporation (Taiwan),LG (Korea),

DuPont stated in a press release in May 2010, that they can produce a 50-inch OLED TV in two minutes with a new printing technology. If this can be scaled up in terms of manufacturing, then the total cost of OLED TVs would be greatly reduced. DuPont also states that OLED TVs made with this less expensive technology can last up to 15 years if left on for a normal eight-hour day.

The use of OLEDs may be subject to patents held by Universal Display Corporation, Eastman Kodak, DuPont, General Electric, Royal Philips Electronics, numerous universities and others.

Flexible OLED displays have been used by manufacturers to create curved displays such as the Galaxy S7 Edge but they were not in devices that can be flexed by the users.

On 31 October 2018, Royole, a Chinese electronics company, unveiled the world"s first foldable screen phone featuring a flexible OLED display.Samsung announced the Samsung Galaxy Fold with a foldable OLED display from Samsung Display, its majority-owned subsidiary.MWC 2019 on 25 February 2019, Huawei announced the Huawei Mate X featuring a foldable OLED display from BOE.

Textiles incorporating OLEDs are an innovation in the fashion world and pose for a way to integrate lighting to bring inert objects to a whole new level of fashion. The hope is to combine the comfort and low cost properties of textile with the OLEDs properties of illumination and low energy consumption. Although this scenario of illuminated clothing is highly plausible, challenges are still a road block. Some issues include: the lifetime of the OLED, rigidness of flexible foil substrates, and the lack of research in making more fabric like photonic textiles.

The number of automakers using OLEDs is still rare and limited to the high-end of the market. For example, the 2010 Lexus RX features an OLED display instead of a thin film transistor (TFT-LCD) display.

A Japanese manufacturer Pioneer Electronic Corporation produced the first car stereos with a monochrome OLED display, which was also the world"s first OLED product.Yazaki,Hyundai Sonata and Kia Soul EV use a 3.5-inch white PMOLED display.

By 2004, Samsung Display, a subsidiary of South Korea"s largest conglomerate and a former Samsung-NEC joint venture, was the world"s largest OLED manufacturer, producing 40% of the OLED displays made in the world,AMOLED market.million out of the total $475million revenues in the global OLED market in 2006.

Samsung SDI announced in 2005, the world"s largest OLED TV at the time, at 21 inches (53 cm).million pixels. In addition, the company adopted active matrix-based technology for its low power consumption and high-resolution qualities. This was exceeded in January 2008, when Samsung showcased the world"s largest and thinnest OLED TV at the time, at 31inches (78cm) and 4.3mm.

In October 2008, Samsung showcased the world"s thinnest OLED display, also the first to be "flappable" and bendable.mm (thinner than paper), yet a Samsung staff member said that it is "technically possible to make the panel thinner".cd/m2. The colour reproduction range is 100% of the NTSC standard.

At the Consumer Electronics Show (CES) in January 2010, Samsung demonstrated a laptop computer with a large, transparent OLED display featuring up to 40% transparency

Samsung"s 2010 AMOLED smartphones used their Super AMOLED trademark, with the Samsung Wave S8500 and Samsung i9000 Galaxy S being launched in June 2010. In January 2011, Samsung announced their Super AMOLED Plus displays, which offer several advances over the older Super AMOLED displays: real stripe matrix (50% more sub pixels), thinner form factor, brighter image and a