tft display technology pdf made in china

STONE Technologies is a proud manufacturer of superior quality TFT LCD modules and LCD screens. The company also provides intelligent HMI solutions that perfectly fit in with its excellent hardware offerings.

STONE TFT LCD modules come with a microcontroller unit that has a 1GHz Cortex-A8 CPU. Such a module can easily be transformed into an HMI screen. Simple hexadecimal instructions can be used to control the module through the UART port. Furthermore, you can seamlessly develop STONE TFT LCD color user interface modules and add touch control, features to them.

The famous china LCD display manufacturers. It is the world’s leading semiconductor display technology, products, and services provider. Products are widely used in mobile phones, tablets, laptops, monitors, televisions, cars, digital information displays, and other display fields.

Focus on the development and production of china HMI (Intelligent TFT LCD Module) LCD display manufacturers, production, and sales of LCD display modules for 16 years. The company master TFT LCD technology and software system. The main products are industrial electronic series, advanced series, and civil and commercial series. Application scenarios include automation systems, medical beauty equipment, vending machines, smart lockers, energy, and power equipment (refueling machines, charging piles), elevators, smart homes, and offices, measuring instruments, public transportation, etc.

Mainly committed to the r&d, production, and sales of TFT-LCD/stn-LCD /OLED display modules, it is a modern high-tech enterprise that provides a full range of product LCD module technology and manufacturing support services for TCL group member enterprises and international electronic enterprises.

Set an LCD display module (LCM), capacitive touch screen (CTP), fully integrated touch display module (TDM), LCD thin technology development, production, and service in one national high-tech company.

Domestic size of the top four small and medium-sized flat panel display manufacturers. The products cover medium and small-size TFT-LCD display modules and high-precision miniature cameras, which have been widely used in the fields of smartphones, medical treatment, and industrial display.

The LCD business division is specialized in the r&d, production, and sales of the LCD display (LCD) and LCD module (LCM) series of products. It has ten semi-automatic COG production lines, 1.5KK of monthly COG products, covering COG, TAB, COB, and other LCD module products, TFT, CSTN, and other color LCD display products, and OLED display products. touch screen manufacturers.

Byd IT products and business mainly include the establishment of rechargeable batteries, plastic parts, metal parts, hardware, and electronic products, mobile phone keys, microelectronics, LCD display module, optoelectronic products, flexible circuit board, chargers, connectors, uninterruptible power supply, dc power supply, solar energy products, mobile phone decoration, mobile phones ODM, mobile phone test, assembly operations, laptop, ODM, manufacturing, testing and assembly operations, etc.

The company has long invested in the research and development of the TFT-lcm LCD module, focusing on consumer products and industrial control products. Currently, 3.5-11.6 inch modules are available, among which 4.0, 4.3, 5, 6, and 10.1-inch products have reached the leading level in the industry. Products are mainly used in vehicles, mobile TV, PMP, DVD, EPC, security, and industrial control products.

Professional development, design, production, and sales of LCD display module (LCM), products cover COB, TAB, COG, and other LCD module products, TFT, CSTN, and other color LCD display products, as well as OLED display products. Products are widely used in mobile phones, communications, digital products, household appliances, industrial control, instrumentation, vehicle display, color screen display, and other fields.

Mainly engaged in research and development, manufacturing, and sales of the LCD display and LCD display module. Products are widely used in all kinds of electronic products and equipment HMI interface, such as medical equipment, instruments and meters, audio, household appliances, telephone and clocks, game machines, and other different types and use.

Focusing on the LCD module industry, is a collection of research and development, manufacturing, sales as one of the high-tech enterprises. TFT module size from 1.44 to 7 inches, product specifications cover QVGA, WVGA, qHD, HD, etc., the market prospects are broad.

The display manufacturers company mainly researches and develops the LCD display, charger, battery, and other products of mobile communication mobile phone, telephone, MP3, and other high-tech products.

The company integrates research and development, design, production, sales, and service into one, and provides comprehensive touch and display integrated solutions for the complete machine touch screen manufacturer of smartphones, specializing in the development and manufacture of Sensor sensors, capacitive touch screens (GFF/OGS/GG), small and medium-sized LCD (TN/HTN/STN/CSTN/TFT) and corresponding modules and glass cover plate products. The company’s products are widely used in communication terminals (smartphone, tablet computer, etc.), household appliances, car electronics, digital products, and other industries, exported to Europe and America, Japan and South Korea, Singapore, and other countries.

Mainly produces medium and small-size LCD display module (LCM), multi-point capacitive touch screen (CTP), and other high-tech products. At present, more than 1000 models of 1.2-12.1 inch products have been developed. Products are widely used in mobile phones, GPS, mobile TV, tablet computers, digital photo frames, e-books, and other consumer electronics.

It is a professional development and production of small and medium-sized flat panel display upstream materials manufacturers. The company’s main products include LCD display panels, color filter, ITO conductive glass (CF), TFT LCD panel, and capacitive touch screen with multi-touch control functions (sensor and the final module), can provide complete medium and small size flat-panel display device using the solution of raw materials, product specifications varieties complete, widely used in 10.4 inches below the smartphone, tablet, PMP, digital camera, digital camera, GPS and other products of the display panel.

Committed to 3.5~4.3 inches, 5 inches, 5.88 inches, 6.2 inches, 7.0 inches, 8.0 inches, 9.7 inches, 10.1 inches, 12.1 inches medium size FOG, backlight process production, products should be widely used in high-end communication phones, tablets, notebook computers, car TV, navigator, and other display products. automotive LCD display touch screen manufacturers.

The company has an injection molding business division, SMT business division, FPC business division, backlight business division, irrigation crystal business division, TFT module business division, SIN module business division, products involving touch screen, LCD display module, backlight, black and white screen, flexible circuit board.

Is a professional engaged in LCD display module, electronic components, production, design, research and development, sales as one of the high-tech enterprises. Products are widely used in mobile phones, game consoles, PDA, portable DVDs, video phones, intercom doorbells, car video, industrial control medical, and other fields.

STONE provides a full range of 3.5 inches to 15.1 inches of small and medium-size standard quasi TFT LCD module, LCD display, TFT display module, display industry, industrial LCD screen, under the sunlight visually highlight TFT LCD display, industrial custom TFT screen, TFT LCD screen-wide temperature, industrial TFT LCD screen, touch screen industry. The TFT LCD module is very suitable for industrial control equipment, medical instruments, POS system, electronic consumer products, vehicles, and other products.

In recent time, China domestic companies like BOE have overtaken LCD manufacturers from Korea and Japan. For the first three quarters of 2020, China LCD companies shipped 97.01 million square meters TFT LCD. And China"s LCD display manufacturers expect to grab 70% global LCD panel shipments very soon.

BOE started LCD manufacturing in 1994, and has grown into the largest LCD manufacturers in the world. Who has the 1st generation 10.5 TFT LCD production line. BOE"s LCD products are widely used in areas like TV, monitor, mobile phone, laptop computer etc.

TianMa Microelectronics is a professional LCD and LCM manufacturer. The company owns generation 4.5 TFT LCD production lines, mainly focuses on making medium to small size LCD product. TianMa works on consult, design and manufacturing of LCD display. Its LCDs are used in medical, instrument, telecommunication and auto industries.

TCL CSOT (TCL China Star Optoelectronics Technology Co., Ltd), established in November, 2009. TCL has six LCD panel production lines commissioned, providing panels and modules for TV and mobile products. The products range from large, small & medium display panel and touch modules.

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.

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.

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.

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.

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.

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.

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.

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.