Reflector with light-scattering surface for liquid-crystal displays and method for their manufacture
US4106859A · kind A · utility
68Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 1976 |
| Grant date | Aug 15, 1978 |
| Priority date | — |
| Expiry date | May 7, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24975
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A novel light scattering reflector and methods of making and using it are disclosed. The reflector, which can advantageously be used in conjunction with liquid crystal displays, includes a layer carrier formed of glass or rigid PVC foil. The layer carrier is roughened by sandblasting, impressing with a grooved die, or by other techniques to provide an irregular surface. A reflective metal coating is subsequently evaporated onto the roughened surface to complete the reflector structure. Auxiliary materials may also be coated onto the layer carrier to improve the characteristics of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.