Luminance-enhancing polarising plate for an organic light-emitting element
US8338823B2 · kind B2 · utility
12Cited by
1References
6Claims
0Family size
Assignee
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Key dates
| Filing date | May 22, 2009 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Aug 28, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/8793
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided a polarizer for organic light emitting diodes (OLED) having improved brightness. The polarizer, which comprises a linear polarizer and a ¼ retardation plate, comprises a reflective polarizer film disposed between the linear polarizer and the ¼ retardation plate and transmitting a polarized light horizontal to the transmission axis of the linear polarizer while reflecting a polarized light vertical to the transmission axis of the linear polarizer. The polarizer may be useful to highly improve the brightness of the OLED device when the polarizer is used in the OLED device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.