Color filter array having a red filter layer
US6733934B2 · kind B2 · utility
4Cited by
4References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 29, 2001 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Feb 7, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/201
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color filter array having a red filter layer on a substrate wherein the red filter layer comprises a xanthene dye having its absorption maximum at a wavelength of 500 to 600 nm, and a pirazolone azo dye having its absorption maximum at a wavelength of 400 to 550 nm; and has a transmittance at a wavelength of 535 nm of 1% or less and that at 650 nm of 90% or more; and the color filter array shows excellent spectroscopic characteristics with respect to red light and has a red filter layer excellent in light fastness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.