Liquid crystal display device and method of manufacturing the same
US9846332B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2014 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Nov 9, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13712
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a method of manufacturing new liquid crystal display device according to an embodiment of the present invention. Firstly, an alignment film is formed on a substrate. The alignment film is divided into a first alignment film formed using, as a precursor, liquid-state polyimide that contains a photodecomposition substance and a second alignment film formed using, as a precursor, a polyamic acid that does not contain a photodecomposition substance. UV light is irradiated to the alignment film, and decomposed substances formed by irradiation of the UV light is removed by an at least two-step removing process. By the method of manufacturing a liquid crystal display device according to the exemplary embodiment of the present disclosure, bright spots are minimized in pixels and a brightness of black is lowered, so that a liquid crystal display device with a high contrast ratio can be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.