Defect Related to Polarizer in TFT-LCD

The polarizer,one of the important parts of a liquid crystal display,impacts the quality of display directly.This paper introduced the basic composition of polarizer,and the formation mechanism of a defect related polarizer was analyzed according to the relationship of moisture and transmittance of polarizer.It showed the formation of the defect is related to the humidity and polarizer material.Then it conducted a test with different modules whose polarizers were made of different materials,in variation temperature and humidity.The results verified the formation mechanism,at the same time established the solution for this defect,that was in active area of display,local polarizer should avoid to contact with other components,or to choose the polarizer that has small change in phase difference.