STN is the early main display mode, initially can only display 256 colors, after technological transformation can display 4096 colors or even 65536 colors, but now the STN is still 256 colors, the advantages are: low price, small energy consumption.
TFTThe brightness is good, the contrast is high, the sense of hierarchy is strong, and the color is vivid. The disadvantage is that it is more power-consuming and costly.
TFT (Thin Film Transistor) is a type of active matrix liquid crystal display. It can "actively" control each individual pixel on the screen, which can greatly improve the response time. Generally TFT response time is faster, about 80 milliseconds, and the viewing angle is large, generally up to 130 degrees or so, mainly used in high-end products. The so-called thin-film field effect transistor, refers to the liquid crystal display on each liquid crystal pixel point is integrated in the thin film transistor after it to drive. Thus can do high speed, high brightness, high contrast display screen information. TFT belongs to the active matrix liquid crystal display, in the technology used in the "active matrix" way to drive, the method is to use thin film technology made of electro-crystalline electrodes, the use of scanning methods "active pull" to control any one display point. The method is to use thin-film technology made of electro-crystal electrodes, using the scanning method "active pull" to control any one of the display point of the on and off, the light source irradiation first through the lower polarizing plate upward transmission, with the help of liquid crystal molecules to conduct light, through the shading and transmittance to achieve the purpose of the display.
The main components of a TFT type LCD include: backlight, polarizer, thin pattern crystal glass substrate, flexible circuit board, and driver IC.
UFB stands for Ultra Fine Bright. It is a special color display technology for Samsung cell phones. UFB is designed with a special raster design that reduces the pixel pitch for better image quality.It is characterized by: ultra-thin, high brightness. It can display 65536 colors and the resolution can reach 128×160 resolution.UFB display adopts a special raster design which can reduce the pixel pitch for better picture quality.UFB combines the advantages of STN and TFT: less power consumption than TFT, and the price is about the same as STN.
STN (Super Twisted Nematic) screen, also known as Super Twisted Nematic LCD screen. In the traditional monochrome LCD added color filters, and monochrome display matrix of each pixel into three pixels, respectively, through the color filter display red, green, blue primary colors, so as to achieve the role of the display of color, the color of light green and orange-based. STN screen belongs to the reflective LCD, the benefits of its power consumption is small, but in the darker environment with poorer clarity.
STN is mainly divided into CSTN and DSTN. CSTN is ColorSTN, generally using the transmission type (transmissive) lighting mode, transmission type screen to use an additional light source lighting, called backlight (backlight), the lighting source to be installed in the back of the LCD. Transmissive LCD in normal light and dark light, the display is very good.STN is the abbreviation of Super Twisted Nematic.
TFD (Thin Film Diode) screen, also known as Thin Film Diode Semi-Transparent LCD.TFD technology was developed by Seiko and Epson specifically for use in cell phone screens. It is a compromise between TFT and STN, with better brightness and color saturation than STN, and is also more power efficient than TFT. The best feature is that it provides high quality, easy-to-view displays with low power consumption, high image quality, and high responsiveness regardless of whether the backlight is turned off (reflective mode) or turned on (transmissive mode).
OLED (Organic Light Emitting Display) that is, organic light emitting display, in the cell phone LCD belongs to the new products, OLED display technology and the traditional LCD display is different, no backlight, the use of very thin coating of organic materials and glass substrate, when there is a current through the organic materials will emit light. And OLED display screen can be made lighter and thinner, larger viewing angle, and can significantly save power consumption.
However, although the future technology is more excellent OLED may replace the TFT LCD, but the organic light-emitting display technology also exists in the use of short life, the screen is difficult to large-scale defects.
In terms of display you can basically think of it like this amoled > ltps > tft > tfd > ufb > stn