Phone screen material

With the gradual popularity of mobile phone color screens, the material of mobile phone screens is becoming more and more important. The color screens of mobile phones are different due to different LCD quality and R&D technology, and there are several types of TFTs, TFDs, UFBs, STNs, and OLEDs. In general, the more colors that can be displayed, the more complex images can be displayed, and the richer picture levels.

In addition to the above major categories of LCDs, it is also possible to see other LCDs on some mobile phones, such as Japan's SHARP's GF screen and CG (continuous crystalline silicon) LCD. The two LCDs are completely different types. GF ​​is an improvement of STN and can improve the brightness of the LCD, while CG is a high-precision, high-quality LCD that can achieve QVGA (240×320) pixel resolution.

UFB, STN, TFT comparison

STN is the main device of the early color screen. It can only display 256 colors at first. Although it can display 4096 colors or even 65,536 colors after technological transformation, the general STN is still 256 colors. The advantages are: low price and low energy consumption.

The TFT has good brightness, high contrast, strong layering, and bright colors. The disadvantage is that it consumes more electricity and costs more.

UFB is a display designed specifically for mobile phones and PDAs. Its features are: ultra-thin, high brightness. 65536 colors can be displayed with a resolution of 128×160. The UFB display uses a special grating design that reduces the pixel pitch for better picture quality. UFB combines the advantages of STN and TFT: less power than TFT, and the price is similar to STN.