Liquid crystal display device and driving method therefor
US5561440A · kind A · utility
60Cited by
6References
29Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 7, 1991 |
| Grant date | Oct 1, 1996 |
| Priority date | — |
| Expiry date | Aug 7, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/136213
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal active matrix display device includes a first substrate having a thin film transistor formed thereon. A light-screening film 1 is located on the first substrate in a manner to be overlapped with an ITO. The display device includes a second substrate having a color filter and a light-screening film 2 formed thereon. The second substrate is opposed to the first substrate. The light-screening film 2 extends from the uncontrollable area by a certain value depending on a voltage from the external, resulting in improving a numerical aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.