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Mobile LCD screen can be divided into: STN screen, TFT screen, UFB screen TFD screen, OLED screen. With the color gradually widespread, mobile phone screen material is becoming more and more important. Mobile phone color screen because of LCD quality and R & D technology is different, and its types are roughly TFT, TFD, UFB, STN and OLED. Generally speaking, the more colors can be displayed, the more complex the image can be displayed, and the level of the picture is more abundant.

STN is the main component of the early color, initially only display 256 colors, although through technology can display 4096 colors or 65536 color, but now the general STN is still the 256 colors, advantages: low price, small energy consumption.
TFT good brightness, high contrast, strong sense of hierarchy, bright color. Disadvantage is more power consumption, higher cost.
UFB is specifically designed for mobile phones and PDA display, it is characterized by: ultra-thin, high brightness. Can display 65536 colors, the resolution can reach 128 x 160 resolution. UFB display using a special grating design, can reduce the pixel spacing, to obtain a better picture quality. UFB combines the advantages of STN and TFT: power consumption less than TFT, the price and STN almost.

TFT Mobile LCD screen
TFT (Film Transistor Thin), which is a thin film field effect transistor, is a kind of active matrix liquid crystal display. It can be "active" on the screen of the individual pixels of each control, so that the reaction time can be greatly improved. General TFT reaction time is relatively fast, about 80 milliseconds, and the visual angle is large, generally can reach about 130 degrees, mainly used in high-end products. The so-called thin film field effect transistor, is refers to the liquid crystal display on each liquid crystal pixel point is by the integration in the subsequent thin film transistor to drive. Thus can achieve high speed, high brightness, high contrast display screen information. TFT belongs to the active matrix liquid crystal display, adopted "active matrix" approach to driving method is made by using thin film transistor electrode technology, using the method of scanning "active pull" control of an arbitrary point display on and off, when the first light source through the polarizing plate to give with the help of liquid crystal molecules, through the conduction of light, light and shading to achieve the purpose of the show.
TFT-LCD LCD screen is a thin film transistor liquid crystal display, which is the "true color" (TFT). TFT LCD for each pixel is provided with a semiconductor switch, each pixel can directly control the pulse through the point, and each node is relatively independent, and can continuously control, not only improves the response speed of the display, and can display the color control accurately, so TFT LCD color is more real. TFT liquid crystal display is characterized by good brightness, high contrast, strong sense of hierarchy, bright color, but there are relatively high power consumption and cost of the problem. TFT LCD technology to accelerate the development of the mobile phone screen. A new generation of mobile phone is a lot of support 65536 color display, and some even support 160 thousand color display, then TFT high contrast, color rich advantage is very important.
TFT type liquid crystal display mainly comprises a fluorescent tube, light guide plate, polarizing plate, filter plate, glass substrate, alignment film, liquid crystal materials, thin mode transistor etc..
TFD Mobile LCD screen
TFD (Film Diode Thin) screen, also known as the thin film diode semi transparent LCD screen. TFD technology developed by the Epson Corp and the, specifically used in the mobile phone screen. It is a compromise between TFT and STN, better than STN's brightness and color saturation, and is also more energy saving than TFT. The biggest feature is both on and off the backlight (reflection mode) or open backlight (transmission mode) conditions can provide high quality and easy to watch the show, and has low power consumption, high quality and high response speed etc..

UFB Mobile LCD screen
LCD UFB is a new type of liquid crystal display device used by Samsung Corp in March 2002, which has the characteristics of super thin and high brightness. UFB-LCD is designed for mobile phone and PDA display design, has the characteristics of ultra-thin, high brightness, can display 65536 colors, to achieve a resolution of 128x160, the screen is also using the grating design in particular, can reduce the pixel spacing to obtain better image quality.
UFB LCD contrast is two times STN LCD screen, 65536 color TFT display brightness and power consumption than TFT be roughly the same, and display, and the price is similar with the STN display, with the advantages of two existing products in a body
OLED Mobile LCD screen
OLED (Organic Light Emitting Display) is an organic light emitting display, belonging to the new products in the mobile phone LCD, is praised as the "dream display". OLED display technology and the traditional LCD display is different, no backlight, the use of very thin organic materials and glass substrate, when there is current through, these organic materials will shine. And OLED display screen can be made lighter and thinner, more visual angle, and can significantly save power consumption. At present in the two technology system of OLED, low molecular OLED technology for the Japanese master, and polymer PLED (LG mobile phone called OEL is the product of the system) technology and patented by British technology company CDT master color compared with PLED products still have a certain difficulty.