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