Illumination method of LCD liquid crystal display

2022-09-06

There are 3 types of lighting methods for LCD displays # TFT screen screen 240 x 240screen #? There are transmissive, semi-transmissive and reflective types. What are the uses of these illumination methods?


1. Transmissive liquid crystal display# TFT touch display #

Use the light emitted by the backlight (side-mounted and bottom-mounted) to illuminate, and make it display through the LCD screen and color filter, etc. The bottom-mounted backlight will increase the weight and thickness of the display # 1.3 inchTFT LCD # plus.

It is basically not used for portable devices such as mobile phones, but is mostly used for large-scale and high-brightness display devices such as LCD TVs and computer monitors that are convenient for power supply.


2. Semi-transmissive liquid crystal display # 1.8 inchTFT display #

It has both transmissive and reflective structural features, and can save power consumption by utilizing reflection under external light during the day. Backlight lighting should be used indoors and at night, and it is most suitable for portable devices. Currently, color portable devices such as color mobile phones are mostly semi-transmissive.


3. Reflective LCD

Due to external light such as sunlight during the day and electric lights in the room, etc., the surface of the display # full touchLCD module # is irradiated (reflected in the LCD screen). The reflected light is displayed through the liquid crystal screen # 2 inch transflective LCD # and color filter, etc., without the power consumption of the backlight source, and it is light in weight, and is mostly used in calculators, clocks, and the like.

In the reflective liquid crystal display, the pixel electrodes of the light reflecting plate are mostly made of metal films such as aluminum and silver. The incident light entering the reflective liquid crystal display # 2 inchLCD monitor # is reflected by the internal pixel electrodes, and then exits through the liquid crystal # 3 inchTFTdisplay # layer again. . With this structure, in order to improve the viewing angle while increasing the reflected light as much as possible, it is necessary to form irregularities on the surface of the pixel electrode. Furthermore, in order to provide a light-diffusion film or the like on the upper part of the liquid # 2.0 TFT LCD 240x320 # crystal layer, it is necessary to improve the performance.


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