How does the lcd display work?
The LCD screen body is thin and saves space. Compared with bulky CRT monitors, LCD monitors only need a third of the space of the former. In addition, it saves energy and does not generate high temperatures. It is a low power consumption product. Compared with CRT monitors, there is no heat at all, LCD monitors have no radiation, which is good for health, and the display screen is soft and does not hurt eyes. So how do LCD monitors work? Next, the new editor will introduce you. How mobile phone LCD displays work: 1. Homogenize the film. After homogenizing the film, the concentrated point light scattered from one diode to another becomes light emitted uniformly over the entire plane. 2. Remove the polarizer. Turning all light into polarized light is like opening a crack in the door. Only light that passes through this slit can pass through, everything else is blocked. This approach results in a significant loss of the amount of light emitted by the backlight. 3. layer. The liquid crystal layer is densely covered with liquid crystals. Taking the primary color area of the pixel as the adjustment unit, and then electrifying the liquid crystal in the small area (1/4 of the pixel), the rotation angle of the mobile LCD screen can be controlled to control the optical path. 4. Three-color filter layer. There are three red, green and blue media filters per pixel, each filter occupying 1/4 of the pixel area (two green filters). The angle-rotated polarized light passes through the filter and takes on different colors. 5. Polarizer. The polarization (slit) direction of the upper plate is parallel or perpendicular to the polarization (slit) of the lower plate. If it is parallel, if the liquid crystal does not do anything to deflect the light path, the backlight can pass directly through the upper and lower seams. In this way, a point on the screen is a field of white light. If the polarization (slit) angle of the top plate is perpendicular, the liquid crystal will not change the light path. 6. How the layers work together. If the liquid crystal is deflected to deflect the light path after being powered on, that is, the light slit direction determined by the lower polarizer is not parallel or perpendicular to the light slit direction of the upper layer. At this time, the polarization angle of the light passing through the filter and the polarization (slit) angle of the upper and lower mirrors are between 0-90°, and some can pass through. The amount of light that can pass through each pixel depends on the rotation angle of the liquid crystal in that pixel area. When the polarization direction of the light emitted by the mobile LCD screen from the lower polarizer coincides with that of the upper polarizer, the illumination of the pixel is maximized. If the deflection of the liquid crystal passes through the lower polarizer, and the polarization angle of the light transmitted by the liquid crystal is perpendicular to that of the upper polarizer, the pixel is black. Because the brightness of each pixel is adjustable, the entire image presents the desired picture.
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