Color filter array having a red filter layer
AssigneesSumitomo Chemical Company, Limited, Sony Corporation
InventorsKazuhiro Machiguchi, Yuuji Ueda, Hiroki Endo, Taichi Natori, Toyomi Jinwaki
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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.
Claims3
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.
A process for producing a color filter array having a red filter layer on a substrate
- which comprises the step of patterning a photosensitive resin composition comprising
- 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
- to form the red filter layer having a transmittance at a at a wavelength of 535 nm of 1% or less and that at 650 nm of 90% or more.
Dependencies are inferred from the claim text.