Liquid crystal active-matrix display device
US5028122A · kind A · utility
61Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1989 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Apr 20, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/136213
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal active-matrix display device is disclosed in which the edge portion of each of the gate electrodes overlaps the edge portion of each of the picture element electrodes to form an additional capacitor. The gate electrodes are made of tantalum, and a first insulating film of tantalum pentoxide and a second insulating film of silicon nitride are disposed in a gap between each of the gate electrodes and each of the picture element electrodes. This thereby provides additional capacitors with a large capacity at a high yield, with little affect on other processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.