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Polarizer

Polarizer

Functions of Polarizer
  Polarizer is a device to polarize the light, which means a specific oscillation direction of light is blocked and allow only the orthogonal direction of light to pass.
   
Structure of Polarizer
  A common structure of polarizer sheet is composed of several plastic layers, which includes polymer like PVA, PET, TAC, COP, PSA, etc. An example structure is shown as figure.

 

 

Polarizing sheet material composition and its functions

 

Layer Structure Materials Functions
1 Surface protection film PET,PSA Protect the protection layer
2 Protection layer TAC Protect PVA layer
3 Polarized light function layer PVA Convert un-defined light into polarized light
4 Protection layer TAC Protect PVA layer
5 Agglutinative paste PSA Board base plaster
6 Release film PET Agglutinate paste protection

Direction of Research Technology

Slim technology of polarizer research
Improving polarizer quality. Polarizing efficiency reaches 99.9% and penetration rate 44%
Design of optical compensation film
Circular polarizer technology for 3D and OLED display
Technology for glue application
Technology of surface handling of polarizer
Technology of mass production of optical film

Future Trend

Since the liquid crystal display has become a mature product, many countries take it as regard of the next trend of display application. However, competitors from Japan, Taiwan, or Korea eagerly last for investing on the fifth or above generation of production lines. Obviously, such competition will bring related key components more demands.

Therefore, BenQ Materials actively ventures on polarizer for liquid crystal display, especially on products such as cellular phone, digital camera, NB, monitor, and TV. For the rapid growth of 3D and OLED application, BenQ Materials also ready circular polarizer technology on products. Other application of polarizer can pay more efforts on developing it with features of anti-scratch, anti-glare, anti-reflection to generate wider commercial market.