construction of tft display made in china

China"s first 8.5-generation TFT-LCD production line was launched in Bengbu, East China"s Anhui province, on June 18, 2019, representing a breakthrough in the production of high-definition LCD screen, Science and Technology Daily reported.

TFT-LCD, or Thin Film Transistor Liquid Crystal Display, is key strategic material of the electronic information display industry. The Gen 8.5 TFT-LCD production line, launched by the Bengbu Glass Industry Design and Research Institute of the China National Building Material Group, will produce high-definition LCD screens of 55 inches, the report said.

According to the Liquid Crystal Branch of the China Optics and Optoelectronics Manufactures Association, the demand for TFT-LCD in the Chinese mainland was about 260 million square meters in 2018, including 233 million square meters" Gen 8.5 TFT-LCD. However, the annual supply of domestically made TFT-LCD is less than 40 million square meters, with all of them Gen 6 or below, which cannot meet the demand in scale and quantity.

The association predicted that China"s market demand for Gen 8.5 TFT-LCD or above will exceed 300 million square meters by 2020, accounting for 49.6 percent of the total global demand.

The production and control precision of Gen 8.5 TFT-LCD is comparable to that of the semiconductor industry, representing a higher level of large-scale manufacturing of modern glass industry.

The institute in Bengbu, with 60 years of expertise in glass, has finally made a breakthrough in the production of Gen 8.5 TFT-LCD, and will provide key raw material guarantee for China"s LCD panel industry after it goes into mass production in September, the report said.

In this article, we are looking at the benefits of looking for Chinese TFT LCD manufacturers. Instead of resorting to other manufacturing means, opting for the Chinese is a much wiser and lucrative choice. If you are looking for Chinese LCD manufacturers, you should start with STONE Tech.

There is no doubt that China has taken the mass manufacturing business by storm. There are few products that we can encounter in our lives that don’t have the words ‘Made in China’ scribbled underneath. There is a glut of products that are mass-manufactured by the Chinese and then shipped out internationally to be sold.

Handbags, wallets, phone cases, and other similar items have become the favorites of wholesalers and bulk buyers. These products are directly sold to end consumers. However, the fascinating thing about the Chinese production and manufacturing business is that it does not only cover the end-consumer products. Rather, you can also acquire raw and basic materials needed for the further manufacturing of goods and products. One such product is LCD displays.

LCD displays have become something of a necessity in today’s world of tech advancement. Many things in our daily life have been automated, and are operated using an interactive user interface. For these kinds of machines and gadgets, LCD displays are typically necessary.

In this article, we are looking at the benefits of looking for Chinese LCD manufacturers. Instead of resorting to other manufacturing means, opting for the Chinese is a much wiser and lucrative choice. If you are looking for Chinese LCD manufacturers, you should start with Stoneitech.com.

STONE Tech is an LCD manufacturer located in Beijing, China. It was founded back in 2010, and it has been developing TFT LCD display modules ever since. These modules can be used for a variety of different machines including electric equipment, precision instruments, and civil electronics etcetera.

One of the main benefits that you get with Stoneitech.com is that there is a wide range of diverse products that you can purchase. For example, there are three different application types that you can choose from which include the Industrial Type, Advanced Type, and Civil Type. Similarly, there is a range of different sizes that you can choose from. There are 11 different sizes that you can buy, ranging from the smallest 3.5-inch display to the large 15.1-inch one. The same goes for the Android series which where you can choose between 4.5-inch and 31.5-inch displays.

This is probably the biggest advantage that you can get when working with manufacturers from China. It can even be assumed that this is probably the biggest reason why the Asian country is at the forefront of the mass manufacturing business.

When you are going to be ordering in bulk, you need to save up on costs as much as you can. The more you save up, the more profit you can make when reselling. Furthermore, lower costs can allow you to set lower prices when selling. This can attract more customers and your sales can increase.

In the initial period of your business, you want to build trust with your customers and give them more value than they expect. The best way you can achieve this is by making your products available for less than the average price. And this can only be done if you are saving up on costs yourself.

The same applies to LCD displays. When you save up on costs when buying LCD displays, you can set a lower price for the whole machine or gadget that you are producing.

This is a very useful benefit for small start-up companies. Generally, manufacturers in the USA are not going to be very willing to work with you unless you are a big company or unless you have a large recognition and following. Due to this, smaller companies can have trouble getting their demands heard. However, the refusal of suppliers to do so is not unjustified. Smaller companies are going to start off with smaller orders. Small orders are not very lucrative and beneficial for suppliers. The larger the order, the more convenient it will be for the manufacturer.

However, with Chinese manufacturers, this problem is minimized. The Chinese often don’t care how big a brand you are and what recognition your company has. As long as you meet the minimum order requirements, you can get your products easily. This is highly advantageous for smaller companies. Due to this, smaller firms can get started and kick off their business.

When it comes to LCD modules, the orders are not received by the hundreds or thousands as is the case with other smaller products such as handbags and wallets etcetera. One module can cost around $250, and it is for this reason that the dynamics are a little different with this business. That is why STONE offers single pieces for sale as well as multiple pieces. This encourages smaller businesses to make their purchases since they can easily purchase as many modules as they like. As long as you meet the limit stated by the supplier, you are good to go.

Typically, when you are paying less, you can have the expectation that the quality might not be good or the time taken may be too long. However, when you are buying from the Chinese, you don’t have to face any of these problems. While you are paying less, you can get satisfactory quality and even the production time is cut down.

The factories in China have more machines and workers working simultaneously. This means that you can get bigger orders more quickly. For example, if you are getting 10 units from a domestic supplier in 4 days, you will be able to get 12 units from a Chinese supplier in just 3 days. That means that the production rate is increased, and the time taken is also cut short. This is merely an example to show that both aspects of production are enhanced when you do business with the Chinese.

Another great benefit of getting production done in China is the option for expansion. What that means is that while you can transport your merchandise to your home country, you also have the option of making them available in China. Instead of only bringing the goods back home to resell, you can set up a business that makes your merchandise available for sale in China as well.

In the case of LCD modules, this benefit relates to a reselling business. For example, if you are planning on buying some modules to use in your machines etcetera, then there is not a very suitable opportunity for you to expand. If you want to start a business in another country, you will have to open a manufacturing unit there so that your products can be produced and then get sold. Or, you will have to transport your final products to the other country in order to run your business.

However, if you are buying the LCD modules to resale at a profit, you can use the Chinese markets to grow your business. You can buy the modules at a reduced price and then sell them at a profit in a different area or city where the people will be willing to pay more.

Now that we have seen the benefits of choosing Chinese manufacturers for LCD modules, let us narrow it down a bit and look at why you should choose STONE specifically.

With STONE, you get the option of buying a range of different-sized modules. If your business deals in making different electronics and machines that require panels of different sizes, you don’t have to look at multiple suppliers to fulfill your need. You could be making some products that require 3.5-inch panels, while some of your machines could be needing 15.1-inch modules. Instead of taking the trouble to go to different suppliers, you can enjoy an all-in-one experience from STONE.

STONE offers its customers ease when it comes to making a purchase. Generally, wholesalers and suppliers sell their merchandise in bundles of 10, 50, 100, etc. However, the STONE store gives you the option of buying single pieces so that you can buy as much as you presently need.

One of the main things that you have to look at in any supplier is the level of reliability and trust. This is usually determined by the level of experience and the time that the supplier has spent in the market. STONE was founded in 2010 and has been producing LCD modules for the past 10 years.

If you are looking to buy LCD modules in bulk, look no further than the Middle Kingdom. China has become the hub of mass manufacturing and is the favorite spot for wholesalers and business owners.

In case you need some convincing about buying from the Chinese, we have compiled a list of benefits that you can enjoy when looking for TFT LCD manufacturers in China.

(Yicai Global) June 19 -- China National Building Material has built the country"s first production line capable of producing 8.5th-generation TFT-LCD glass substrates, making China one of few nations to master the technology.

The central state-owned firm"s Bengbu Glass Industry Design and Research built the facility after three years of research, Science and Technology Daily reported. The plant aims to obtain certifications that will allow it to manufacture for domestic display makers.

TFT-LCD, or thin-film-transistor liquid-crystal displays, are classified by the size of their glass substrate. Sixth-generation displays are now widely considered out-dated while 8.5th-gen tech is the most advanced. The newer technologies use larger substrates, which are more efficient to make and can be used in larger screens.

Demand for glass substrates in China reached 260 million square meters in 2018, with demand for 8.5th-gen components making up 233 million, according to the China Optics & Optoelectronics Manufacturers Association. But domestic production is only about 40 million square meters and all below 6th-gen. American and Japanese companies mostly dominate the more advanced segment of the market.

The association expects demand to surge to 300 million square meters by 2020, or about half of the global total, leaving massive room for development.

LG.Philips LCD began production of seventh-generation TFT LCDs (thin-film transistor liquid crystal displays) at its facility in Paju (Korea) at the beginning of 2006. The ramp up was over six months earlier than previously planned, prompted by increasing demand for LCD TVs and PCs. The expansion made it the world’s largest LCD production facility. Philips made a pilot production run at the end of November 2005, and has started production of 42in panels from its 1,950mm x 2,250mm glass substrates.

The company is investing $10 billion and expects annual sales close to $3 billion, more than 90% of which will be from exports. The 1,650,000m² complex takes the LG.Philips LCD industrial cluster to 3,300,000m², housing next-generation LCD production and R&D facilities. Preparatory work was completed by March 2004.

The fab is located in Paju, Kyonggi Province, north of Seoul. LG.Philips LCD and the Kyonggi provincial government has provided infrastructure including industrial water systems, electricity utilities and roads. The investment has created around 5,000 new jobs.

TFT LCDs have three layers. A glass plate substrate with TFT transistors is at the bottom, a glass plate colour filter on top and the liquid crystal is injected between the two. Although LCDs are fluid, they show long-range order like solids. The molecules are roughly bar shaped but with anisotropic values of reflective index, dielectric constant, conductivity and viscosity: all have different values along different axes.

The transistors apply voltages to the liquid crystals to control the vibration direction of polarized light passing through them. This affects the light permeability of the individual LCD pixels to form images.

TFT-LCD screens are flatter and lighter than CRTs, consume less power and generate lower electromagnetic emissions. Besides going into TV sets for the home, TFT LCDs will be used in monitors for mini notebook PCs and hand-held computers, medical equipment, car navigation and entertainment systems and avionics instrumentation.

Philips has been improving the technical limitations of TFT-LCDs, particularly angle, brightness response time. The company now has 20.1in UXGA, 23in WUXGA and 30in WQXGA+ TFT-LCD panels for large-scale, wide monitor-specific TFT-LCDs for desktop monitors.

The first phase of the factory should reach a production capacity of 45,000 glass sheets/month by Q3 2006. The factory should reach its initial design capacity of 90,000 input sheets/month by Q1 2007.

After first manufacturing 42in TV panels, Philips will gradually increase production of 47in TV screens. It can produce eight 42in panels or six 47in panels from a single glass substrate.

During sputtering, the high-energy gas ions inside the plasma collide with the surface of a (negative) target, knocking out the target materials which are deposited onto the (positive) plate.

Photolithography first coats the substrate with a very thin liquid film of photosensitive ‘resist’. Exposing the photoresist to light through a mask transfers the pattern onto the substrate. This is followed by cleaning. Another layer of the photoresist is then deposited to the substrate, exposed, cleaned, and so on, until all the layers have been printed or imaged onto the surface.

LG.Philips LCD is a 50:50 joint venture between LG Electronics and Philips Electronics. The company produces TFT-LCDs for notebook PCs, desktop monitors, LCD TVs and special applications including car navigation systems, avionics, miniature notebook PCs, hand-held PCs and medical diagnostic machines. Higher value 18in-and-above screens make up more than 20% of LG.Philips LCD’s total TV LCD production.

The company has also invested a total of 3.3 trillion won (just under $2 billion) to build a new sixth-generation TFT-LCD plant in Gumi, south of Seoul. In addition to its Korean facilities, where the core panels are made, LG.Philips LCD has expanded its Nanjing, China, fifth-generation module plant, where it has produced more than one million TFT-LCDs for desktop monitors (module yield is more than 99%). In Nanjing, panels are equipped with other components before being sold to monitor and TV set manufacturers.

A thin-film-transistor liquid-crystal display (TFT LCD) is a variant of a liquid-crystal display that uses thin-film-transistor technologyactive matrix LCD, in contrast to passive matrix LCDs or simple, direct-driven (i.e. with segments directly connected to electronics outside the LCD) LCDs with a few segments.

In February 1957, John Wallmark of RCA filed a patent for a thin film MOSFET. Paul K. Weimer, also of RCA implemented Wallmark"s ideas and developed the thin-film transistor (TFT) in 1962, a type of MOSFET distinct from the standard bulk MOSFET. It was made with thin films of cadmium selenide and cadmium sulfide. The idea of a TFT-based liquid-crystal display (LCD) was conceived by Bernard Lechner of RCA Laboratories in 1968. In 1971, Lechner, F. J. Marlowe, E. O. Nester and J. Tults demonstrated a 2-by-18 matrix display driven by a hybrid circuit using the dynamic scattering mode of LCDs.T. Peter Brody, J. A. Asars and G. D. Dixon at Westinghouse Research Laboratories developed a CdSe (cadmium selenide) TFT, which they used to demonstrate the first CdSe thin-film-transistor liquid-crystal display (TFT LCD).active-matrix liquid-crystal display (AM LCD) using CdSe TFTs in 1974, and then Brody coined the term "active matrix" in 1975.high-resolution and high-quality electronic visual display devices use TFT-based active matrix displays.

The liquid crystal displays used in calculators and other devices with similarly simple displays have direct-driven image elements, and therefore a voltage can be easily applied across just one segment of these types of displays without interfering with the other segments. This would be impractical for a large display, because it would have a large number of (color) picture elements (pixels), and thus it would require millions of connections, both top and bottom for each one of the three colors (red, green and blue) of every pixel. To avoid this issue, the pixels are addressed in rows and columns, reducing the connection count from millions down to thousands. The column and row wires attach to transistor switches, one for each pixel. The one-way current passing characteristic of the transistor prevents the charge that is being applied to each pixel from being drained between refreshes to a display"s image. Each pixel is a small capacitor with a layer of insulating liquid crystal sandwiched between transparent conductive ITO layers.

The circuit layout process of a TFT-LCD is very similar to that of semiconductor products. However, rather than fabricating the transistors from silicon, that is formed into a crystalline silicon wafer, they are made from a thin film of amorphous silicon that is deposited on a glass panel. The silicon layer for TFT-LCDs is typically deposited using the PECVD process.

Polycrystalline silicon is sometimes used in displays requiring higher TFT performance. Examples include small high-resolution displays such as those found in projectors or viewfinders. Amorphous silicon-based TFTs are by far the most common, due to their lower production cost, whereas polycrystalline silicon TFTs are more costly and much more difficult to produce.

The twisted nematic display is one of the oldest and frequently cheapest kind of LCD display technologies available. TN displays benefit from fast pixel response times and less smearing than other LCD display technology, but suffer from poor color reproduction and limited viewing angles, especially in the vertical direction. Colors will shift, potentially to the point of completely inverting, when viewed at an angle that is not perpendicular to the display. Modern, high end consumer products have developed methods to overcome the technology"s shortcomings, such as RTC (Response Time Compensation / Overdrive) technologies. Modern TN displays can look significantly better than older TN displays from decades earlier, but overall TN has inferior viewing angles and poor color in comparison to other technology.

Most TN panels can represent colors using only six bits per RGB channel, or 18 bit in total, and are unable to display the 16.7 million color shades (24-bit truecolor) that are available using 24-bit color. Instead, these panels display interpolated 24-bit color using a dithering method that combines adjacent pixels to simulate the desired shade. They can also use a form of temporal dithering called Frame Rate Control (FRC), which cycles between different shades with each new frame to simulate an intermediate shade. Such 18 bit panels with dithering are sometimes advertised as having "16.2 million colors". These color simulation methods are noticeable to many people and highly bothersome to some.gamut (often referred to as a percentage of the NTSC 1953 color gamut) are also due to backlighting technology. It is not uncommon for older displays to range from 10% to 26% of the NTSC color gamut, whereas other kind of displays, utilizing more complicated CCFL or LED phosphor formulations or RGB LED backlights, may extend past 100% of the NTSC color gamut, a difference quite perceivable by the human eye.

The transmittance of a pixel of an LCD panel typically does not change linearly with the applied voltage,sRGB standard for computer monitors requires a specific nonlinear dependence of the amount of emitted light as a function of the RGB value.

In-plane switching was developed by Hitachi Ltd. in 1996 to improve on the poor viewing angle and the poor color reproduction of TN panels at that time.

Initial iterations of IPS technology were characterised by slow response time and a low contrast ratio but later revisions have made marked improvements to these shortcomings. Because of its wide viewing angle and accurate color reproduction (with almost no off-angle color shift), IPS is widely employed in high-end monitors aimed at professional graphic artists, although with the recent fall in price it has been seen in the mainstream market as well. IPS technology was sold to Panasonic by Hitachi.

Most panels also support true 8-bit per channel color. These improvements came at the cost of a higher response time, initially about 50 ms. IPS panels were also extremely expensive.

IPS has since been superseded by S-IPS (Super-IPS, Hitachi Ltd. in 1998), which has all the benefits of IPS technology with the addition of improved pixel refresh timing.

In 2004, Hydis Technologies Co., Ltd licensed its AFFS patent to Japan"s Hitachi Displays. Hitachi is using AFFS to manufacture high end panels in their product line. In 2006, Hydis also licensed its AFFS to Sanyo Epson Imaging Devices Corporation.

It achieved pixel response which was fast for its time, wide viewing angles, and high contrast at the cost of brightness and color reproduction.Response Time Compensation) technologies.

Less expensive PVA panels often use dithering and FRC, whereas super-PVA (S-PVA) panels all use at least 8 bits per color component and do not use color simulation methods.BRAVIA LCD TVs offer 10-bit and xvYCC color support, for example, the Bravia X4500 series. S-PVA also offers fast response times using modern RTC technologies.

When the field is on, the liquid crystal molecules start to tilt towards the center of the sub-pixels because of the electric field; as a result, a continuous pinwheel alignment (CPA) is formed; the azimuthal angle rotates 360 degrees continuously resulting in an excellent viewing angle. The ASV mode is also called CPA mode.

A technology developed by Samsung is Super PLS, which bears similarities to IPS panels, has wider viewing angles, better image quality, increased brightness, and lower production costs. PLS technology debuted in the PC display market with the release of the Samsung S27A850 and S24A850 monitors in September 2011.

TFT dual-transistor pixel or cell technology is a reflective-display technology for use in very-low-power-consumption applications such as electronic shelf labels (ESL), digital watches, or metering. DTP involves adding a secondary transistor gate in the single TFT cell to maintain the display of a pixel during a period of 1s without loss of image or without degrading the TFT transistors over time. By slowing the refresh rate of the standard frequency from 60 Hz to 1 Hz, DTP claims to increase the power efficiency by multiple orders of magnitude.

Due to the very high cost of building TFT factories, there are few major OEM panel vendors for large display panels. The glass panel suppliers are as follows:

External consumer display devices like a TFT LCD feature one or more analog VGA, DVI, HDMI, or DisplayPort interface, with many featuring a selection of these interfaces. Inside external display devices there is a controller board that will convert the video signal using color mapping and image scaling usually employing the discrete cosine transform (DCT) in order to convert any video source like CVBS, VGA, DVI, HDMI, etc. into digital RGB at the native resolution of the display panel. In a laptop the graphics chip will directly produce a signal suitable for connection to the built-in TFT display. A control mechanism for the backlight is usually included on the same controller board.

The low level interface of STN, DSTN, or TFT display panels use either single ended TTL 5 V signal for older displays or TTL 3.3 V for slightly newer displays that transmits the pixel clock, horizontal sync, vertical sync, digital red, digital green, digital blue in parallel. Some models (for example the AT070TN92) also feature input/display enable, horizontal scan direction and vertical scan direction signals.

New and large (>15") TFT displays often use LVDS signaling that transmits the same contents as the parallel interface (Hsync, Vsync, RGB) but will put control and RGB bits into a number of serial transmission lines synchronized to a clock whose rate is equal to the pixel rate. LVDS transmits seven bits per clock per data line, with six bits being data and one bit used to signal if the other six bits need to be inverted in order to maintain DC balance. Low-cost TFT displays often have three data lines and therefore only directly support 18 bits per pixel. Upscale displays have four or five data lines to support 24 bits per pixel (truecolor) or 30 bits per pixel respectively. Panel manufacturers are slowly replacing LVDS with Internal DisplayPort and Embedded DisplayPort, which allow sixfold reduction of the number of differential pairs.

Backlight intensity is usually controlled by varying a few volts DC, or generating a PWM signal, or adjusting a potentiometer or simply fixed. This in turn controls a high-voltage (1.3 kV) DC-AC inverter or a matrix of LEDs. The method to control the intensity of LED is to pulse them with PWM which can be source of harmonic flicker.

The bare display panel will only accept a digital video signal at the resolution determined by the panel pixel matrix designed at manufacture. Some screen panels will ignore the LSB bits of the color information to present a consistent interface (8 bit -> 6 bit/color x3).

With analogue signals like VGA, the display controller also needs to perform a high speed analog to digital conversion. With digital input signals like DVI or HDMI some simple reordering of the bits is needed before feeding it to the rescaler if the input resolution doesn"t match the display panel resolution.

The statements are applicable to Merck KGaA as well as its competitors JNC Corporation (formerly Chisso Corporation) and DIC (formerly Dainippon Ink & Chemicals). All three manufacturers have agreed not to introduce any acutely toxic or mutagenic liquid crystals to the market. They cover more than 90 percent of the global liquid crystal market. The remaining market share of liquid crystals, produced primarily in China, consists of older, patent-free substances from the three leading world producers and have already been tested for toxicity by them. As a result, they can also be considered non-toxic.

Kawamoto, H. (2012). "The Inventors of TFT Active-Matrix LCD Receive the 2011 IEEE Nishizawa Medal". Journal of Display Technology. 8 (1): 3–4. Bibcode:2012JDisT...8....3K. doi:10.1109/JDT.2011.2177740. ISSN 1551-319X.

Brody, T. Peter; Asars, J. A.; Dixon, G. D. (November 1973). "A 6 × 6 inch 20 lines-per-inch liquid-crystal display panel". 20 (11): 995–1001. Bibcode:1973ITED...20..995B. doi:10.1109/T-ED.1973.17780. ISSN 0018-9383.

Richard Ahrons (2012). "Industrial Research in Microcircuitry at RCA: The Early Years, 1953–1963". 12 (1). IEEE Annals of the History of Computing: 60–73. Cite journal requires |journal= (help)

K. H. Lee; H. Y. Kim; K. H. Park; S. J. Jang; I. C. Park & J. Y. Lee (June 2006). "A Novel Outdoor Readability of Portable TFT-LCD with AFFS Technology". SID Symposium Digest of Technical Papers. AIP. 37 (1): 1079–82. doi:10.1889/1.2433159. S2CID 129569963.

Kim, Sae-Bom; Kim, Woong-Ki; Chounlamany, Vanseng; Seo, Jaehwan; Yoo, Jisu; Jo, Hun-Je; Jung, Jinho (15 August 2012). "Identification of multi-level toxicity of liquid crystal display wastewater toward Daphnia magna and Moina macrocopa". Journal of Hazardous Materials. Seoul, Korea; Laos, Lao. 227–228: 327–333. doi:10.1016/j.jhazmat.2012.05.059. PMID 22677053.

Driven by growing demand, TFT-LCD’s manufacturing capacity in China has been experiencing a continued growth rate ranging between 20 to 30% per year. This trend is expected to continue during the coming years as result of coming upgrade cycles in display devices. Beijing Oriental Electronics Technology Group (BOE) and Tianma Microelectronics Co. Ltd rank among the world top TFT-LCD manufacturers.

Air Liquide and BOE recently signed a long-term supply agreement for BOE’s new 4.5-generation TFT-LCD fab in Chengdu high-tech industrial park, in the capital city of Sichuan Province. Under the terms of the agreement, Air Liquide will supply its global offer covering carrier gases (nitrogen, oxygen, hydrogen and argon), specialty gases, Total Gas Management and all equipment and installations related to gas supply. The decision made by BOE to choose Air Liquide’s global solution is the result of a long term partnership between both companies.

Tianma Microelectronics awarded Air Liquide the supply of all the carrier gases to its new 4.5-generation TFT-LCD project in Chengdu. This is the first time Air Liquide and Tianma enter into a partnership.

Following the signature of these two new contracts, Air Liquide will invest €25 million in an Air Separation Unit (ASU) to supply BOE, Tianma and the dynamic market of the Chengdu region.

Francisco Martins, Vice-President World Business Line Electronics of the Air Liquide Group, declared: “We are proud to serve the leading players of TFT-LCD in China and therefore reinforcing our position as market leader. This investment will allow our first foothold in Chengdu, one of the most important markets in the South West of China and, at the same time, illustrates Air Liquide’s commitment to contribute to the economic reconstruction of the Sichuan earthquake area. In the current economic context, High Tech and Emerging economies such as China are long-term growth drivers for the Group.”

Wang Jiaheng, Vice-President of BOE Group, added: “After fruitful discussion, we have decided to choose Air Liquide as our gas material partner of BOE Chengdu. Air Liquide has understood our needs and shown competitiveness. We look forward to good cooperation with Air Liquide and benefit from its worldwide capabilities.”

Established in 1993, has been listed in Shenzhen Stock exchange since 1997. Since then, it has shifted its business from the traditional consumer electronics market to the communications, computer and digital product fields. Currently, BOE is the largest domestic and the world’s No. 9 largest TFT-LCD manufacturer, with a total revenue exceeding 10 billion Yuan in 2007. In 2007, BOE started to build a 4.5-generation TFT-LCD fab in Chengdu with a total investment of 3 billion Yuan.

Founded in 1983 in Shenzhen, Guangdong Province of China, is primarily engaged in the manufacture and sale of liquide crystal displays (LCD) and liquid crystal modules (LCM). The company has established subsidiaries in Shanghai as well as in the United States, South Korea and Europe respectively. In July 2008, Tianma announced its new investment in Chengdu. It’s another 4.5-generation TFT-LCD fab with a total investment of 3 billion Yuan.

When compared to the ordinary LCD, TFT LCD gives very sharp and crisp picture/text with shorter response time. TFT LCD displays are used in more and more applications, giving products better visual presentation.

TFT is an abbreviation for "Thin Film Transistor". The colorTFT LCD display has transistors made up of thin films of Amorphous silicon deposited on a glass. It serves as a control valve to provide an appropriate voltage onto liquid crystals for individual sub-pixels. That is why TFT LCD display is also called Active Matrix display.

A TFT LCD has a liquid crystal layer between a glass substrate formed with TFTs and transparent pixel electrodes and another glass substrate with a color filter (RGB) and transparent counter electrodes. Each pixel in an active matrix is paired with a transistor that includes capacitor which gives each sub-pixel the ability to retain its charge, instead of requiring an electrical charge sent each time it needed to be changed. This means that TFT LCD displays are more responsive.

To understand how TFT LCD works, we first need to grasp the concept of field-effect transistor (FET). FET is a type of transistor which uses electric field to control the flow of electrical current. It is a component with three terminals: source, gate, and drain. FETs control the flow of current by the application of a voltage to the gate, which in turn alters the conductivity between the drain and source.

Using FET, we can build a circuit as below. Data Bus sends signal to FET Source, when SEL SIGNAL applies voltage to the Gate, driving voltage is then created on TFT LCD panel. A sub-pixel will be lit up. A TFT LCD display contains thousand or million of such driving circuits.

Topway started TFT LCD manufacturing more than15 years ago. We produce color TFT LCD display from 1.8 to 15+ inches with different resolutions and interfaces. Here is some more readings about how to choose the right TFT LCD.

With our loaded working experience and thoughtful products and services, we"ve got been acknowledged as a reputable supplier for most international buyers for Tft Display, Transparent Lcd Display, Monochrome Lcd Panel, Lcd Panel Notebook,Lcd Liquid. Together with our efforts, our products and solutions have won the trust of clients and been very salable each here and abroad. The product will supply to all over the world, such as Europe, America, Australia,UK, Japan,Latvia, Sevilla.Profession, Devoting are always fundamental to our mission. We have always been in line with serving customers, creating value management objectives and adhering to the sincerity, dedication, persistent management idea.

In ruling NY N320557 (August 4, 2021), Customs and Border Protection (CBP) discussed the country of origin of five Thin Film Transistor – Liquid Crystal Display (TFT-LCD) modules. All five modules are virtually identical in composition, as they are all composed of a TFT-LCD cell, polarizers, a backlight, a driver and control printed circuit board (PCB), and a flexible PCB for connection. TFT display technology allows for the construction of high-resolution LCD displays, and the modules – once completed – can be incorporated into a variety of consumers display applications.

The manufacturing process for the five modules is also identical. The process begins in Japan where the TFT-LCD cell is manufactured. The TFT is created by depositing transistors onto a substrate through chemical vapor deposition, while the color filter is manufactured by building a color matrix on a glass substrate. The creation process of the cells is then completed when a layer of liquid crystal is deposited between the color filter and TFT as the two part are bonded together, creating a sheet of TFT-LCD cells. As next steps, the sheet of cells is delivered to China to be cut into individual cells. The cut-up cells are then bonded to the printed circuit board assembly (PCBA) – which contains the driver and control circuity – before the polarizers, backlight, and flexible connection PCBA are attached.

In its determination, CBP notes that, as defined under 19 CFR 134.1(b), the country of origin is the “country of manufacture, production, or growth of any article of foreign origin entering the United States. Further work or material added to an article in another country must effect a substantial transformation in order to render such other country the ‘country of origin’ within the meaning of this part.”

CBP also established that “substantial transformation” takes place when a particular product “emerges from a process with a new name, character or use different from that possessed by the article prior to processing.” The agency explained that the completed TFT-LCD cell is what imparts the essential function of the module and that the manufacturing process in Japan is what renders the end-use of the product. Despite the assembly that took place in China, the process did not substantially transform the cell into a new and different article. As such, CBP determined that the country of origin of the five modules is Japan.

China is the leader in producing LCD display panels, with a forecast capacity share of 56 percent in 2020. China"s share is expected to increase in the coming years, stabilizing at 69 percent from 2023 onwards.Read moreLCD panel production capacity share from 2016 to 2025, by countryCharacteristicChinaJapanSouth KoreaTaiwan-----