Color filter array having a green filter layer
US6713227B2 · kind B2 · utility
14Cited by
5References
11Claims
0Family size
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Key dates
| Filing date | Jun 29, 2001 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Oct 12, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/201
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color filter array having a green filter layer on a substrate wherein the green filter layer comprises a copper phthalocyanine dye having its absorption maximum at a wavelength of 600 to 700 nm, and a pyridone azo dye having its absorption maximum at a wavelength of 400 to 500 nm; and has a transmittance at a wavelength of 450 nm of 5% or less and that at 535 nm of 62% or more is provided; and the color filter array shows excellent spectroscopic characteristics with respect to green light and has a green filter layer excellent in light fastness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.