Tiled, flat-panel microdisplay array having visually imperceptible seams
US6005649A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1998 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Jul 22, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/041
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention describes tiling structures, methods, and circuits for making large flat-panel displays from an array of microdisplays. The inventive displays overcome the intrinsic size limits of monolithic microdisplays and allow the construction of large area, low cost, high brightness, high contrast magnified view or rear projection flat panel displays having visually imperceptible seams and are optically uniform. A structure wherein multiple microdisplay tiles are mounted on a thermally matched common substrate having inherent temperature control features is described. Additional integrated circuits such as CMOS circuits may be embedded either in the back plane of the microdisplay tiles themselves and/or in the common substrate if the common substrate is made from a suitable semiconductor material. These circuits can provide functions such pixel addressing, image control, or even complete microprocessor functions within the flat-panel display assembly itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.