Active matrix liquid crystal display device
US6356330B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1999 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Oct 27, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/136209
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An active matrix liquid crystal display device is provided for realizing a high uniformity of display luminance with lower power consumption, a higher contrast, and a wider viewing angle. In a common wire eliminated (common-less) IPS-type active matrix liquid crystal display device, an opposing electrode 107 is arranged above a signal wire 104 and a thin film transistor (TFT) through an insulating layer. The opposing electrode 107 and a scanning wire 101 shield the signal wire 104 or the TFT to prevent light from leaking from edge portions of the signal wire 104 as well as the TFT from malfunctioning due to a current generated by leaked light, thereby realizing the elimination of a black matrix (BM), a reduction in size of a black matrix, and planarized substrates, thus resulting in a higher aperture ratio and an improved uniformity of cell gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.