Aperture frame for liquid crystal display device
US6414337B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2000 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Nov 10, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133388
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Liquid crystal display devices having display screens with an improved black frame is provided. The microdisplay of the LCD is formed of a matrix of pixels disposed on the top surface of a silicon substrate, a layer of glass, and a layer of a reflective metal, preferably aluminum, which is disposed between the silicon substrate and layer of glass. The layer of reflective metal has a pattern, which forms a frame around the matrix of pixels, and is involved in generating the black frame when viewed by the user on the display screen. The reflective material functions to reflect light back to the light generating source, and thus displays a pure black image to the user. In another embodiment, a layer of reflective metal, preferably black chromium, patterned to form a frame around the matrix of pixels, is disposed on the top surface of the glass. The reflective metal layer on top of the glass may be used either in place of, or in addition to, the reflective metal layer on the bottom of the glass to generate the improved black frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.