The Construction about TFT LCD Display

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 128x64 lcd display 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 Modules 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.Transistors take up only a small fraction of the area of each pixel and the rest of the silicon film is etched away to allow light to easily pass through it.
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.

Application of TFT LCD Display

A thin-film-transistor liquid-crystal display (TFT LCD) is a variant of a liquid-crystal display (LCD) that uses thin-film transistor (TFT) technology to improve image qualities such as addressability and contrast. A TFT LCD is an active-matrix LCD, in contrast to passive-matrix LCDs or simple, direct-driven LCDs with a few segments.
TFT Lcd Modules are used in appliances including television sets, computer monitors, mobile phones, handheld video game systems, personal digital assistants, navigation systems and projectors.TFT LCDs are also used in car instrument clusters because display lcd 20x4 allow the driver to customize the cluster, as well as being able to provide an analogue-like display with digital elements.

Graphic lcd modules communication and Hutchison planted civilized way of revolution

A wide range of application, from -20 ℃ to + can be used normally within a temperature range of 50 ℃, after the temperature reinforcement of TFT-LCD cryogenic operating temperatures can reach minus 80 ℃. Can be used as a mobile terminal display, desktop terminal display, but also can be used for large-screen projection TV, is an excellent Graphic LCD Display performance of the full-size video display terminals.
(4) the environmental characteristics of good: OLED Module no radiation, no flicker, no harm to the health of users. Especially TFT-LCD electronic books appear, will mankind into a paperless office, paperless printing era, causing human learning, communication and Hutchison planted civilized way of revolution.
(5) TFT-LCD for easy integration and upgrading, is the perfect combination of large-scale integrated circuit technology and semiconductor light source technology, continue to develop potential. Currently there are amorphous, polycrystalline and single-crystal silicon TFT-LCD, TFT Someday other materials, both the glass substrate have a plastic substrate.
TFT Lcd Modules features a brightness, high contrast, strong sense of hierarchy, bright colors, but there are relatively high power consumption and costs less. TFT LCD technology to accelerate the development of mobile phone color screen. Many of the new generation of color phone supports 65,536 colors display, some even support 16 million color display, when a high-contrast TFT, color-rich advantage is very important.