EL device, EL display, EL illumination apparatus, liquid crystal apparatus using the EL illumination apparatus and electronic apparatus
US6873099B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 2002 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Nov 26, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133603
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electroluminescent (EL) display apparatus is constructed in such a way that a plurality of EL elements are disposed on one surface of an optically transparent substrate in a matrix so as to be isolated from each other and be powered individually, and at least one of a pair of electrodes is made of an optically transparent electrode, so that, when the EL elements are powered, light is emitted from the light emitting layers, wherein an optical device is provided on the other surface side of the substrate so that at least a portion of an incident light injected into the substrate and forming an angle to cause total reflection at the exit face is scattered and/or diffracted externally, and another portion of the incident light is weakly scattered and/or transmitted externally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.