Color filter
US6469758B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 2000 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Jan 19, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133514
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color filter that is adapted to be changeably used for a twisted nematic (TN) mode LCD and an in-plane switching mode (IPS) mode LCD by forming a light-shielding layer at the rear side of a transparent substrate to improve surface morphology. In the color filter, a light-shielding layer is formed from a metal material on a second surface of a transparent substrate having first and second surfaces to have a lattice shape. First, second and third filters are formed at a portion which does not correspond to the light-shielding layer on the first surface of the transparent substrate in manner such that a desired portion is overlapped with the light-shielding layer, thereby transmitting red, green and blue color lights, respectively. Accordingly, the light-shielding layer is formed on the second surface of the transparent substrate to prevent deterioration in surface morphology. Even though the first and second light-shielding layers are removed by stripped particles generated during the continuous deposition process to provide pinholes, light leakage can be prevented by virtue of the third light-shielding layer. Also, the first to third light-shielding layers are made from a metal or…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.