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Brief Introduction to the Working Principle of TFT-LCD Flat Panel Liquid Crystal Display

2013-09-22
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Working principle of TFT-LCD flat panel liquid crystal display Introduction to polarization phenomenon When light enters iodine molecules, it will get polarization phenomenon. Polarizing plate is made of polyvinyl alcohol film with iodine added, rolled on a roller, stretched 4-5 times in a single direction, and then combined with supporting film, protective film and adhesive film. The thickness of the polarizing plate is generally 0.12-0.4mm. Function of amorphous silicon thin film transistor In the entire thin film crystal liquid crystal display, the role played by amorphous silicon thin film transistor is simply to switch the pixel. This pixel switch writes the image data of each pixel into the pixel in sequence with the scanning cycle, and the image data is expressed in the form of voltage, and is stored in each pixel with the storage capacitor. The voltage stored in the pixel is different, which affects the polarization state of the liquid crystal. Simply put, different voltages correspond to different gray scales. In addition, the red, blue and green primary colors of the color filter, so the combination of gray scale and three primary colors determines the number of colors that this panel can display.

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