Classification and main features of LCD LED displays

1. Classification and main features of LCD displays

LCD is the full name of liquid crystal display, mainly including TFT, UFB, TFD, STN and other types of liquid crystal display.

TFT is commonly used in computer LCD screens. The TFT screen is a thin film transistor and an active matrix type liquid crystal display. A special light pipe is set on its back to actively control each independent pixel on the screen. This is also the origin of the so-called active matrix TFT.

This can greatly improve the response time, about 80 milliseconds, effectively improve the STN (STN response time is 200 milliseconds) flickering and blurring, and effectively improve the ability to play dynamic pictures. Compared with STN, TFT has excellent color saturation, reduction ability and higher contrast. It can still be seen very clearly in the sun, but the disadvantage is that it consumes more power and costs more.
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2. Classification and main features of LED displays

LED is the abbreviation of Light Emitting Diode. LED applications can be divided into two categories: one is LED single tube application, including backlight LED, infrared LED, etc.; the other is LED display.

At present, there is still a certain gap between China and the international in the manufacturing of LED basic materials, but as far as LED display is concerned, the level of design and production technology in China is basically in line with the international level. The LED display screen is a display device composed of light-emitting diodes arranged in an array. It adopts low-voltage scanning drive, and has the characteristics of low power consumption, long service life, low cost, high brightness, low failure, large viewing angle, and long visual distance.