Organic light emitter having optical waveguide for propagating light along the surface of the substrate
US6392338B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1999 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Mar 15, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/813
Abstract
An organic light emitter includes an anode and a cathode. A first layer of organic material includes a light emitting layer. The first layer extends between the anode and the cathode. A second layer has a refractive index higher than a refractive index of the light emitting layer. The second layer is optically coupled to the light emitting layer, causing an optical waveguide which propagates light generated by the light emitting layer along a direction parallel to a surface of a substrate. At least part of the optical waveguide has an effective refractive index which spatially and periodically varies in a direction parallel to the surface of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.