The life of crystal endoscope display device is very long, and the backlight module determines the life of LCD. At present, the backlight sources used in LCD are divided by technology, mainly including tungsten halogen lamp, light emitting diode (LED), organic electroluminescence (EL), cold cathode fluorescent lamp (CCFL), cathode emitting lamp (CLL) and metal halide lamp.

内窥镜显示器

Endoscope display

其中应用较广的是冷阴极荧光灯，主要是因为此种背光源的性能、稳定性及成本都较佳，目前几乎所用的LCD内窥镜显示器都是采用这种背光源。

Among them, cold cathode fluorescent lamps are widely used, mainly because this backlight has better performance, stability and cost. At present, almost all LCD endoscope displays use this backlight

平板型结构：液晶显示器件的基本结构是由2片玻璃基板制成的薄形盒，这种结构可以在有限的面积上容纳大量的显示内容，显示内容的利用率较高。

Flat panel structure: the basic structure of liquid crystal display device is a thin box made of two glass substrates. This structure can accommodate a large amount of display content in a limited area, and the utilization rate of display content is high.

被动型显示：液晶显示器件本身不能发光，它靠调制外界光达到显示目的。因此无眩光，不刺激人眼，不会引起眼睛疲劳。对于黑暗中不能观看的缺点，只要配上背光源，就可以克服。

Passive display: the liquid crystal display device itself cannot emit light. It achieves the display purpose by modulating the external light. Therefore, it has no glare, does not stimulate human eyes, and will not cause eye fatigue. The disadvantage of being unable to watch in the dark can be overcome as long as it is equipped with a backlight.

显示信息量大：与CRT相比，液晶内窥镜显示器件没有荫罩限制，因此像素点可以做得更小、更精细；与等离子显示相比，液晶显示器件像素点处不需要像等离子显示那样，像素点间要留有一定的隔离区。因此，液晶显示在同样大小的显示窗面积内，可以容纳更多的像素，显示更多的信息。

Large amount of display information: compared with CRT, the LCD endoscope display device has no shadow mask limitation, so the pixels can be made smaller and more fine; Compared with plasma display, liquid crystal display device does not need to leave a certain isolation area between pixels like plasma display. Therefore, the liquid crystal display can accommodate more pixels and display more information within the display window area of the same size.