Light-emitting device having an insulating layer of projections and depressions
US10069114B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2017 |
| Grant date | Sep 4, 2018 |
| Priority date | — |
| Expiry date | Feb 21, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/3026
Abstract
In a light-emitting device where reflective electrodes are regularly arranged, occurrence of interference fringes due to reflection of light reflected by the reflective electrode is inhibited. A surface of the reflective electrode of a light-emitting element is provided with a plurality of depressions. The shapes of the plurality of depressions are different from each other and do not have rotational symmetry. Irregularity of the surface shape of the reflective electrode is increased, which inhibits interference of light reflected by the reflective electrode. To form the plurality of depressions in the surface of the reflective electrode, for example, a surface of an insulating layer that is a base of the reflective electrode is made uneven. Reflecting the surface shape of the insulating layer, the reflective electrode has an uneven surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.