tft lcd vs full hd 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.

IPS (In-Plane Switching) lcd is still a type of TFT LCD, IPS TFT is also called SFT LCD (supper fine tft ),different to regular tft in TN (Twisted Nematic) mode, theIPS LCD liquid crystal elements inside the tft lcd cell, they are arrayed in plane inside the lcd cell when power off, so the light can not transmit it via theIPS lcdwhen power off, When power on, the liquid crystal elements inside the IPS tft would switch in a small angle, then the light would go through the IPS lcd display, then the display on since light go through the IPS display, the switching angle is related to the input power, the switch angle is related to the input power value of IPS LCD, the more switch angle, the more light would transmit the IPS LCD, we call it negative display mode.

The regular tft lcd, it is a-si TN (Twisted Nematic) tft lcd, its liquid crystal elements are arrayed in vertical type, the light could transmit the regularTFT LCDwhen power off. When power on, the liquid crystal twist in some angle, then it block the light transmit the tft lcd, then make the display elements display on by this way, the liquid crystal twist angle is also related to the input power, the more twist angle, the more light would be blocked by the tft lcd, it is tft lcd working mode.

A TFT lcd display is vivid and colorful than a common monochrome lcd display. TFT refreshes more quickly response than a monochrome LCD display and shows motion more smoothly. TFT displays use more electricity in driving than monochrome LCD screens, so they not only cost more in the first place, but they are also more expensive to drive tft lcd screen.The two most common types of TFT LCDs are IPS and TN displays.

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 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.

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.

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.

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.

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.

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This rise of small, powerful components has also led to significant developments in display technology. The most recent of which, AMOLED, is now the main competitor for the most common display used in quality portable electronics – the TFT–LCD IPS (In-Plane Switching) display. As more factories in the Far East begin to produce AMOLED technology, it seems likely we will enter a battle of TFT IPS versus AMOLED, or LCD vs LED. Where a large percentage of a product’s cost is the display technology it uses, which provides best value for money when you’re designing a new product?

TFT IPSdisplays improved on previous TFT LCD technology, developed to overcome limitations and improve contrast, viewing angles, sunlight readability and response times. Viewing angles were originally very limited – so in-plane switching panels were introduced to improve them.

Modern TFT screens can have custom backlights turned up to whatever brightness that their power limit allows, which means they have no maximum brightness limitation. TFT IPS panels also have the option for OCA bonding, which uses a special adhesive to bond a touchscreen or glass coverlens to the TFT. This improves sunlight readability by preventing light from bouncing around between the layers of the display, and also improves durability without adding excess bulk; some TFT IPS displays now only measure around 2 mm thick.

AMOLED technology is an upgrade to older OLED technology. It uses organic compounds that emit light when exposed to electricity. This means no backlight, which in turn means less power consumption and a reduction in size. AMOLED screens tend to be thinner than TFT equivalents, often produced to be as thin as 1 mm. AMOLED technology also offers greater viewing angles thanks to deeper blacks. Colours tend to be greater, but visibility in daylight is lower than IPS displays.

As manufacturers increasingly focus on smaller devices, such as portable smartphones and wearable technology, the thinness and high colour resolution of AMOLED screens have grown desirable. However, producing AMOLED displays is far more costly as fewer factories offer the technology at a consistent quality and minimum order quantities are high; what capacity there is is often taken up the mobile phone market Full HD TFT IPS displays have the advantage of being offered in industry standard sizes and at a far lower cost, as well as offering superior sunlight visibility.

The competition between displays has benefitted both technologies as it has resulted in improvements in both. For example, Super AMOLED, a marketing brand by Samsung, involves the integration of a touchscreen layer inside the screen, rather than overlaid on it. The backlight in TFT technology means they can never truly replicate the deep blacks in AMOLED, but improvements have been made in resolution to the point where manufacturers like Apple have been happy to use LCD screens in their smartphones, even as they compete with Samsung’s Super AMOLED.

Aside from smartphones, many technologies utilise displays to offer direct interaction with customers. To decide whether TFT LCD will survive the rise of AMOLED technology, we must first recap the advantages of LCD. The backlit quality means that whites are bright and contrast is good, but this will wear down a battery faster than AMOLED. Additionally, cost is a significant factor for LCD screens. They are cheaper, more freely available and are offered in industry standard sizes so can be ordered for new products without difficulty.

It seems hard to deny that AMOLED will someday become the standard for mobile phones, which demand great colour performance and are reliant on battery life. Where size is an issue, AMOLED will also grow to dominance thanks to its superior thinness. But for all other technologies, particularly in industrial applications, TFT-LCD offers bright, affordable display technology that is continually improving as the challenge from AMOLED rises.

The TFT-LCD industry touched the bottom in 2011, then has warmed up slowly since 2012 and is expected to reach its peak in early 2015, but it will fall into another lengthy decline stage by 2016. After the TFT-LCD industry slumped, TFT-LCD vendors in different countries chose varying countermeasures. South Korean vendors represented by Samsung strived to explore the OLED field. In Japan, Sharp transferred to be a small and medium-sized panel vendor, produced mobile phone panels with 8.5-generation lines and vigorously developed IGZO technology.

Hitachi, Sony and Toshiba set up a joint venture ------ Japan Display (referred to as JDI) to develop LTPS technology. Taiwanese vendors developed 4K HD technology. Chinese mainland vendors promoted the construction of new production lines at low costs aggressively. As a result, Chinese mainland vendors are the most notable winners, followed by Taiwanese and Japanese counterparts, while Samsung is the biggest loser.

South Korean vendors chose the wrong direction, because the current-based OLED can not replace the voltage-based LCD due to following factors. Firstly, OLED requires LTPS technology, which means its cost is much higher than LCD. Secondly, the resolution of current-based components is difficult to raise, but LCD has huge potentials in terms of resolution. Thirdly, OLED’s quality is not steady for its employment of unstable chemical materials, and its luminous efficiency decays as time goes by, which is another fatal flaw. In the small and medium-sized field, Japanese vendors make advantage of LTPS and IGZO to occupy technical high grounds, and Taiwanese vendors lead the global LCD trend with 4K for the first time.

Samsung shows over-reliance on OLED, and its LCD business has gradually crept down. It not only lags behind INNOLUX under Taiwan"s Hon Hai in shipment, but also will drop behind INNOLUX in terms of revenue in 2014. As for profitability, Samsung gets into trouble as well. Being overly optimistic on the Chinese mainland market, Samsung invested heavily in China"s first foreign-funded 8.5-generation line in Suzhou. However, the production line brought the huge loss of KRW86.6 billion in the first half of 2014. Besides China, Samsung also witnessed loss in its overall LCD business in Q2 2014. Samsung has revealed that it will not launch any new OLED TV, even it may quit the OLED TV field in 2015.

Currently, the prices of 32 to 42-inch LCD-TV panels have stabilized and tend to rise marginally before the peak season, while the prices of 42 to 65-inch LCD-TV panels follow the downward trend as LG Display and Samsung put two 8.5-generation lines into operation in the first half of 2014. In 2015, CSOT’s second 8.5-generation line, Chongqing BOE’s second 8.5-generation line and CEC-Panda"s first 8.5-generation line will target at the 46 to 65-inch TV market, but the output will not be high in the initial stage, so they will not influence the market significantly. On the whole, China will have five 8.5-generation lines in 2015.

AUO Corporation ("AUO" or the "Company") (TAIEX: 2409; NYSE: AUO) will exhibit its full lineup of TFT-LCDs for different applications at eMEX 2007 (Electronic Manufacturer Exposition China), scheduled to be held from Oct. 18 to Oct. 21 at the Suzhou International Exhibition Center, China. AUO’s exhibit highlights include 37” to 46” Full HD LCD TV panels, and 6.5” to 42” LCD panels for various general industrial display applications.

Specifically to meet the fast-growing market demand for general industrial display applications, AUO will exhibit its full range of LCD panels ranging from 6.5” to 42” for the first time. The wide variety of product applications include ATM, POS, Kiosk, IPC (Industrial PC), marine/aviation electronics, lottery/gambling gaming machines, medical equipment, factory automation (FA), e-Signage, and Public Information Displays (PID). Currently AUO is ranked No. 2 in terms of worldwide general industrial display panel shipments (a), affirming AUO’s dedication and commitment to the market. “AUO’s capability in a wide range of different generation fabs enables us to provide customized services in terms of product size, design, and technology support to meet customers’ different needs in the general industrial display market. AUO will continue its efforts to develop business in the important China market”, said Paul Peng, VP & GM of Information Technology Display Business Group.

AUO provides a total solution to the general industrial display market with a complete product line of high-performance, high-reliability products, as well as long-term product support. In order to meet strict industrial standards and outdoor application requirements, AUO has aggressively researched and developed related technologies. In backlight module technology, AUO has adopted long-life backlights and replaceable CCFL lamp assembly designs. The simplified structure offers benefits in easy-field maintenance, extended product usage, and cost effectiveness. In addition, AUO’s self-developed technology-- “EcoTR” (Eco Transflective) is an economical and affordable solution to increase sunlight readability and power efficiency. The technology can be utilized in outdoor applications such as ATM, POS, and Kiosk. As for wide temperature operations, AUO has successfully expanded the working temperature range of general industrial display panels through continuous material and process improvement. AUO has also developed Reverse Scan technology which can support 180 degree display rotation to avoid the gray level inversion problem occurring from lower viewing angles.

Among the lineup of exhibits, the 12.1” panel for lottery machine, ATM, Kiosk, and POS applications features high contrast ratio, high brightness, long-life lamps, and wide temperature operations. The easily-replaceable backlight design and the Reverse Scan technology are also implemented. The 42" portrait LCD panel with AMVA technology ensures wide viewing angle and low color washout. The product is able to demonstrate good image quality in various environments and is suitable for e-Signage and Public Information Display (PID) applications at airports, stations, exhibitions, conference centers, shopping malls, department stores, amusement game centers, movie theaters or restaurants.

AUO will also exhibit 37”, 42” and 46” LCD TV panels equipped with Full HD resolution and AMVA (Advanced MVA) technology featuring wide viewing angle, low color washout, and a high contrast ratio of 2000:1. For Desktop Monitor applications, the 24” wide-format Full HD panel is incorporated with ASPD (AUO Simulated Pulsed Driving) motion blur reduction technology and HiColor technology to produce high color saturation. The economic entry-level TN-LCD design and high-performance display technologies make this product the best choice for “MoniTV” applications. It is also the ideal display to meet consumers’ requirements for both home office and entertainment applications. In addition, AUO’s 20.1” and 22” wide-format panels with resolutions of 1680x1050 can fit two full-size A4 pages or two 800x600 resolution web pages on the screen. The display size and resolution are perfect matches for the Windows Vista operating system.

As for Notebook PC applications, AUO will be showcasing light and power-saving LCDs equipped with LED backlights. The 13.3” LCD panel features ultra thin (thickness of 2.7mm), extra light (22g), and a super high contrast ratio (800:1). For small/medium sized products, the 7” and 8” panels for digital frame applications, and QVGA high resolution panels for mobile device applications, will also be on display.

The short name of TFT:Thin Film Transistor in Chinese. What is the difference between TFT and LCD? Our laptops and desktops now use relatively advanced TFT displays, which consist of LCD pixels and are powered by thin-film transistors integrated behind the pixels. Therefore, the TFT type display screen also belongs to a class of display devices with a source matrix.

TFT type display screen is currently a better LCD color display, TFT type display has many advantages: high responsiveness, high brightness, high contrast, and so on.TFT displays are closest to CRT displays. The TFT screen also often appears on the screen of each big mobile phone, there are 65536 colors, 160,000 colors, 16 million colors three, its display effect is also very good.

TFT means that every LCD pixel on an LCD is driven by a thin-film transistor integrated behind it. Thus can achieve high speed, high brightness, high contrast display screen information, TFT-LCD(thin-film transistor liquid crystal display) is one of the majority of LIQUID crystal displays.

Liquid Crystal Display (LCD). The structure of the LCD is placed in the middle of the two pieces of parallel glass liquid crystal box, the substrate glass set on TFT (thin-film transistor), set the color filter substrate glass on, on the TFT signal, and the voltage change to control the rotation direction of the liquid crystal molecules, so as to achieve control of each pixel display emergent polarized light or not and to achieve. Now THAT LCD has replaced CRT as the mainstream, the price has dropped a lot and become widely available.

The TFT(Thin Film Field-effect Transistor) is a video in which every single pixel in the liquid crystal display is actuated by a Thin Film Transistor embedded in the rear. Thus can achieve high speed, high brightness, high contrast display screen information.

Color screens of mobile phones vary depending on LCD quality and research and development technology. The types of color screens include STN (CSTN), TFT(LTPS), TFD, UFB, and OLED.

Liquid Crystal Display (LCD). Generally divided into monochrome and color LCD two kinds, the current monochrome LCD has almost out of the notebook computer market, and color LCD still continues to develop. The color LCD can be divided into two types: STN and TFT. The TFT(Thin Film Transistorized)LCD, also known as the active transistorized Transistor LIQUID crystal display (LCD), is the true-color LIQUID crystal display that many people describe as the Thin Film Transistor.DSTN (Dual Scan Twisted Nematic)LCD, namely double scan LIQUID crystal display. It is a display mode of STN LCD, which is no longer on the market.

What is the difference between TFT and LCD? Read here I believe you have a general understanding and cognition of TFT and LCD, LCD refers to liquid crystal display, TFT is a kind of LCD. The former is for laptops and the latter is for desktop computers. There are several different technologies for LCD, FED, PDP, OLED, TFT-LCD, they are all LCD. Only the desktop with several fronts more, lower cost, TFT technology cost is higher, generally used for notebook, or MOTO, etc., now most of the display is TFT type display, I believe we will pay more attention to the choice and purchase of digital goods.

Our new line of 10.1” TFT displays with IPS technology are now available! These 10.1” IPS displays offer three interface options to choose from including RGB, LVDS, and HDMI interface, each with two touchscreen options as capacitive or without a touchscreen.

The new line of 3.5” TFT displays with IPS technology is now available! Three touchscreen options are available: capacitive, resistive, or without a touchscreen.

7 Inch TFT LCD Panel Digital Photo Frame with 800*480 Resolution Function : Advanced Multi-Media Function. Size : 5-10 . Shape : Square. Material : Acrylic. Resolution Ratio : 800*480. Feature : Portable, USB. Memory Card : SD. Language Support : English. Image Format Support : JPG. Usage : Gifts. Color : White&Black. 7 Inch TFT LCD Panel Digital Photo Frame with 800*480 Resolution Main Functions of the Digital Photo Frame 1) Adopts ABS Full Plastic Frame+3mm Acrylic Glass As Protector L