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  Polarizer is an essential part of the LCD panel since the polarized light helps the imaging of a LCD display. Two pieces of Polarizer are attached on LCD glass, constituting a liquid crystal piece of 1mm thick. The liquid crystal panel can not image in absence of either one piece of polarizer.

As an important material for producing LCD panel, the polarizer is produced by composting, stretching and laminating materials called PVA and TAC for several times. Polarizer makes it possible to produce LCD panels of high brightness and contrast. The cost of polarizer accounts for about 10% of the total cost of TFT-LCD panel. The production of polarizer involves technologies in the fields of macromolecular material, micro electronics, opto-electronics, thin film and computer control. Thus the polarizer is product of high technology.

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