หน้าจอแสดงผล LCD ทำงานอย่างไร:
1. Homogenization film. After the homogenization film, the concentrated point-like light scattered from one diode becomes the light emitted uniformly on the entire plane.
2, lower polarizer. Turning all light into polarized light is like opening a slit in the door. Only the light passing through this slit can pass through, and everything else is blocked. This method causes a great loss of the amount of light emitted by the backlight.
จอ LCD
3. Liquid crystal layer. The liquid crystal layer is densely packed with liquid crystals, and one primary color area of a pixel is used as an adjustment unit. Then, the liquid crystal in this small area (1/4 of the pixel) is charged to control the rotation angle of the liquid crystal. Control the light path.
4, three-color filter layer. On each pixel, there are three filters of red, green and blue, each occupying a 1/4 pixel area (the green filter occupies two blocks), and the angle-rotated polarized light passes through the filter to show different colors.
5. Polarizer. The polarization (slit) direction of the upper sheet is either parallel or perpendicular to the polarization (slit) of the lower sheet. If it is parallel, if the liquid crystal body does not do any action to deflect the light path, the backlight can directly pass through the upper and lower slits, so that when the screen is touched, a white light will appear. If the polarization (slit) angle of the upper film is vertical, then the liquid crystal does not change the optical path.
6. How do the layers work together. If the liquid crystal body deflects after power-up, the light path is deflected, that is, the direction of the light slit determined by the lower polarizer is not parallel or perpendicular to the direction of the upper light slit. At this time, the polarization angle of the light through the filter is in line with The polarization (slit) angle of the upper and lower mirrors is between 0-90 degree , and some of them can pass. The amount of light that each pixel can pass through depends on the angle of rotation of the liquid crystal in that pixel area.
เมื่อทิศทางของโพลาไรซ์ของแสงที่คริสตัลเหลวส่องจากโพลาไรเซอร์ด้านล่างสอดคล้องกับทิศทางของโพลาไรเซอร์บน ความสว่างของพิกเซลจะถึงค่าสูงสุด หากการโก่งตัวของผลึกเหลวเป็นมุมโพลาไรซ์ของแสงที่ผ่านโพลาไรเซอร์ล่างและโพลาไรซ์ของเพลตบน เมื่อมุมเป็นแนวตั้ง พิกเซลนี้จะเป็นสีดำ เนื่องจากความสว่างของแต่ละพิกเซลสามารถปรับได้ ทั้งภาพจึงนำเสนอภาพที่ต้องการ
