Homeotropic liquid crystal display with common electrodes parallel and positioned at both sides of pixel electrodes to improve viewing angle
US5969781A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1998 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Jun 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/121
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An LCD (Liquid Crystal Display) of the present invention includes a pair of substrates facing each other and at least one of which is transparent. A liquid crystal composition intervenes between the substrates. Scanning wirings and signal wirings are arranged on one substrate in a matrix configuration. Pixel electrodes each constitutes one pixel. Switching devices each is positioned at a portion where one of the scanning wirings and one of the signal wirings intersect each other, for controlling the application of a voltage to the associated pixel electrode. Common electrodes are formed on the other substrate. The liquid crystal composition has positive dielectric constant anisotropy and is oriented vertically to the facing surfaces of the substrates when a voltage is not applied. The common electrodes are parallel to the pixel electrodes and positioned at both sides of said pixel electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.