Composite phase retarder and organic light emitting display apparatus using the same
US9172062B2 · kind B2 · utility
0Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2012 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Sep 17, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/8731
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a composite phase retarder and an organic light emitting display apparatus using the same. The organic light emitting display apparatus comprises an organic light emitting display panel and the composite phase retarder. The composite phase retarder comprises a quarter wave (λ/4) phase retarder, a polarizer and a pattern retarder stacked in sequence. The present invention can be applicable to display 3D images and enhance a display contrast of the organic light emitting display apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.