Front plate of TN liquid crystal display device
US9857516B2 · kind B2 · utility
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Key dates
| Filing date | Sep 22, 2011 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Sep 22, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1396
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The problem is to provide a front plate of a TN liquid crystal display device capable of reducing occurrence of color unevenness caused by retardation of a polycarbonate resin sheet, even when the liquid crystal panel is observed through polarizing glasses or liquid crystal shutter glasses for 3D, while having excellent impact resistance, heat resistance and transparency.The solution means are that the direction of the slow axis or the fast axis of a polycarbonate resin sheet is parallel to the lengthwise direction of a TN liquid crystal panel, and that retardation is not less than 5000 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.