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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10370464 B1

PDFFull Text
Date of Patent:
Aug. 06, 2019

Filed:

Jun. 30, 2016

Pigment dispersion liquid containing organic color pigment and infrared absorbing dye, colored resin composition, and optical filter

Applicant:

Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;

Inventors:

Yusuke Tone, Tokyo, JP;

Takashi Yoshimoto, Tokyo, JP;

Satoshi Kobayashi, Tokyo, JP;

Assignee:

NIPPON KAYAKU KABUSHIKI KAISHA, Tokyo, JP;

Attorney:

Rankin, Hill & Clark LLP

Primary Examiner:

John A McPherson

Int. Cl.
CPC ...
G02B 5/20 (2006.01); C08F 20/28 (2006.01); C08F 2/44 (2006.01); C08F 2/48 (2006.01); C09B 47/04 (2006.01); G02B 5/22 (2006.01); G03F 7/00 (2006.01); G03F 7/105 (2006.01); C09B 67/08 (2006.01); C09B 67/22 (2006.01); G03F 7/027 (2006.01); G03F 7/031 (2006.01);
U.S. Cl.
CPC ...
C08F 20/28 (2013.01); C08F 2/44 (2013.01); C08F 2/48 (2013.01); C09B 47/045 (2013.01); C09B 67/0009 (2013.01); C09B 67/0033 (2013.01); C09B 67/0034 (2013.01); C09B 67/0035 (2013.01); G02B 5/208 (2013.01); G02B 5/223 (2013.01); G03F 7/0007 (2013.01); G03F 7/105 (2013.01); G03F 7/027 (2013.01); G03F 7/031 (2013.01);
Abstract

The present invention addresses the problem of providing: a pigment dispersion liquid with which an optical filter layer having the functions of both a color filter and a near-infrared cut filter can be formed by performing a development step once, and with which a thin filter achieved by using a single-layer configuration instead of a conventional two-layer configuration can be fabricated; and a colored resin composition containing the pigment dispersion liquid. The present invention provides a pigment dispersion liquid containing one or more organic color pigments selected from the group consisting of pigment red, pigment green, pigment blue, pigment yellow, and pigment violet, an infrared absorbing dye having a maximum absorption wavelength in a wavelength range of 750-2000 nm, and an oil-soluble organic solvent or an aqueous medium, and a colored resin composition containing the dispersion liquid.

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