Liquid crystal display device
US7742113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2007 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Apr 26, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13685
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display device includes first and second opposed facing substrates and liquid crystal sandwiched therebetween. The first substrate includes a thin film transistor having a first electrode thereof connected to a video signal line and a second electrode thereof connected to a pixel electrode, a first silicon nitride film, an organic insulation film, a capacitance electrode, and a second silicon nitride film. The second silicon nitride film is formed at a temperature lower than a forming temperature of the first silicon nitride film. The second electrode and the pixel electrode are connected to each other via a contact hole formed by the first and second silicon nitride films. A potential different from a potential applied to the pixel electrode is applied to the capacitance electrode, and a holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.