Antireflector black matrix for display devices comprising three layers of zinc oxide, molybdenum, and zinc oxide
US5570212A · kind A · utility
5Cited by
15References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1995 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Mar 24, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A black matrix structure suitable for use in an active matrix liquid crystal display is described. The novel antireflective black matrix comprises successive layers of zinc oxide, molybdenum, a second layer of zinc oxide and a molybdenum mirror, all of which are deposited upon the front surface of a glass substrate member. An alternative structure includes the same sequence of layering on the back surface of the molybdenum mirror. The described black matrixes reduce reflectance of incident light to less than 0.5%. A technique for the preparation of the described structure involving cathodic sputtering is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.