Liquid crystal display device
US8427624B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 8, 2010 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Aug 20, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133519
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an IPS type liquid crystal display device, a light shielding film, a red color filter, an overcoat film, and an alignment film are formed in this order on a counter substrate. However, the alignment film is not formed in a seal portion. When the alignment film is subjected to photo-alignment with ultraviolet radiation, a portion of the overcoat film not covered with the alignment film is degraded by ultraviolet radiation. In order to prevent moisture penetrating from the degraded overcoat film from reaching the light shielding film to thereby alter the light shielding film and from causing the peeling of the light shielding film, the red color filter is disposed below the overcoat film to block the moisture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.