Polarization plate and liquid crystal display
US9507202B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Nov 4, 2014 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Nov 4, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polarization plate includes a first protective film, a polarizer, and a second protective film in this order, in which the first protective film is a film including a (meth)acryl-based resin, a thickness of the first protective film is in a range of 20 μm to 30 μm, a thickness of the second protective film is in a range of 1.5 times to 1.8 times of the thickness of the first protective film, and a humidity dimensional change ratio of the second protective film in the direction orthogonal to an absorption axis of the polarizer is in a range of 0.45% to 0.8%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.