Introduction to TFT Screen

- Jul 19, 2018-

TFT (Thin Film transistor) is the film field effect transistor, It can "proactively" control individual pixels on the screen, which can greatly increase the response time. General TFT response time is relatively fast, about 80 milliseconds, and the visual angle of large, generally can reach about 130 degrees, mainly used in high-end products. So you can do high speed, high brightness, high contrast display screen information. TFT belongs to Active matrix liquid crystal display, and it is driven by the way of "initiative matrix" in technology. The method is to use the thin film technology to make the crystal electrodes, using the scanning method "active pull" to control any one of the display point of the open and off, the light source irradiation first through the lower polarizer upward, with the help of liquid crystal molecules conduction light,

Through shading and light transmission to achieve the purpose of the display.

A new generation of color mobile phone many support 65536 colors display, and some even support 160,000 color display, when the high contrast TFT, color rich advantage is very important.

The main components of TFT-LCD display include: Fluorescent tube, light guide plate, polarizer, filter plate, glass substrate, matching film, liquid crystal material, thin mode transistor and so on. With the gradual popularity of the mobile color screen, the material of the mobile phone is becoming more and more important. The color screen of the handset is different because of the LCD quality and the research and development technology, its kind has roughly TFT, TFD, UFB, STN and OLED several kinds.

In general, the more colors you can display, the more complex the images are, and the more abundant the layers are. Apart from these major types of LCD, but also on some mobile phones to see some other LCD, such as the Japanese sharp GF screen and CG (continuous crystalline silicon) LCD.

The two types of LCD are completely different, GF for the improvement of STN, can improve the brightness of the LCD, and CG is a high-precision high-quality LCD can achieve QVGA (240x320) pixel specifications of the resolution.