High efficiency organic light emitting devices with light directing structures
US5834893A · kind A · utility
1,505Cited by
15References
31Claims
0Family size
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Key dates
| Filing date | Dec 23, 1996 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Dec 23, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
An organic light emitting device (OLED) structure having reflective surfaces is fabricated in a pit formed in a substrate. The pit has slanted reflective side walls which redirect light that is waveguided in the organic layers of the OLED to a direction substantially normal to the plane of the substrate. The reflective structure can also be formed with a planar configuration over interconnects covered with a polyimide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.