Manufacturing method for liquid crystal display device
US11536999B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 1, 2021 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | May 13, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13685
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A LCD device having a large pixel holding capacitance includes opposedly facing first and second substrates, and liquid crystal between them. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode connected to the video signal line and a second electrode connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film above the first silicon nitride film, a capacitance electrode above the organic insulation film, and a second silicon nitride film above the capacitance electrode and below the pixel electrode. A contact hole etched in both the first and second silicon nitride films connects the second electrode and the pixel electrode to each other. 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.