Active matrix liquid crystal device with opposite substrate having black matrix with larger aperture than active substrate
US5510916A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1993 |
| Grant date | Apr 23, 1996 |
| Priority date | — |
| Expiry date | Nov 1, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/136213
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an active matrix liquid crystal device assuming a light blocking condition when a voltage is applied, there are provided a main plate formed with a pixel electrode, wiring electrodes and a switching transistor, an opposing plate formed with an opposing electrode, and a liquid crystal material sandwiched between the main plate and the opposing plate, so that a transmission light is irradiated from the main plate side. A light blocking layer acting also as a storage capacitor electrode is provided on the main plate through an insulating layer under the wiring electrode, the switching device and a periphery of the pixel electrode. Thus, it is to prevent light leakage at a boundary of a pixel, and to simultaneously suppress and conceal an orientation abnormality of the liquid crystal occurring at a periphery of the pixel electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.