Color display/detector
US5583351A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1994 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Apr 21, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/423
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color semiconductor display device in which optoelectronic elements capable of emitting/absorbing light of different predetermined wavelengths in the visible wavelength range (e.g. red, green, blue) are formed on a common substrate and comprise similar alloy compositions which are lattice matched to the substrate material. The alloy is preferably a III-V nitride alloy lattice matched to Si or GaP substrate material. In the disclosed embodiment, a color display device comprises a silicon or GaP substrate with an array of pixels, each being formed by a group of three (red, green, blue) color sub-pixels provided on the substrate. The pixels are formed of InAINSb alloy, with a quantum well regions of InNSb and barrier regions of AINSb, or are formed of AIGaAsSbN alloy, with quantum well regions of GaAsN and barrier regions of AINSb. Tuning of the wavelength emission/absorption characteristics of the sub-pixels is by doping of the quantum well material with aluminum and/or by quantum confinement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.