Optical filter, and liquid-crystal display device comprising it
US7768600B2 · kind B2 · utility
2Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2008 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Feb 18, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133388
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is an optical filter having a light-transmitting region of transmitting light having a predetermined wavelength and a light-blocking region disposed adjacent to the light-transmitting region to block out the light, wherein the light-blocking region has an optical density gradation relative to light in the normal direction, from the contact point to the light-transmitting region along an in-plane direction, and the optical density is the smallest at the contact point to the light-transmitting region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.