Method of fabricating a multi-color light emissive display
US6821799B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Jul 25, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B33/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Multi-color light-emissive displays in which the constituent light-emissive devices providing the multiple colors are laterally integrated on the surface of a substrate. The light-emissive devices, typically emitting light by electroluminescence, are arranged such that adjacent devices emit light of a differing wavelength or color. The semiconductor phosphor material forming the active element of each light-emissive device is laterally defined by a lift-off technique in which a patterned layer of a sacrificial material is formed on the substrate, a layer of the semiconductor phosphor material is deposited, and the sacrificial layer is removed to leave semiconductor phosphor material on the substrate in selected locations defined by the pattern. The lift-off technique is iterated to successively fabricate active elements for light-emissive devices of each differing wavelength constituting the multi-color display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.