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US 12,528,947 B2Granted
Infrared-absorbing composition, film, optical filter, solid-state imaging element, image display device, and infrared sensor
AssigneeFUJIFILM Corporation
InventorsTokihiko Matsumura, Suguru Samejima, Yumi Kato, Ryoji Orita
Life of this patent
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Abstract
An infrared-absorbing composition includes particles of an infrared-absorbing coloring agent and a solvent, in which the particles in the infrared-absorbing composition have two or more maximal absorption wavelengths exhibited in a wavelength range of 650 to 1500 nm, and in the range, in a case where an absorbance at a maximal absorption wavelength existing on a second shortest wavelength side is set to 1, an absorbance at a maximal absorption wavelength existing on a shortest wavelength side is 0.6 to 2.0.
Claims12
An infrared-absorbing composition comprising:
- particles of an infrared-absorbing coloring agent;
- and
- a solvent,
- wherein the particles in the infrared-absorbing composition have two or more maximal absorption wavelengths exhibited in a wavelength range of 650 to 1500 nm, and
- in the range, in a case where an absorbance at a maximal absorption wavelength existing on a second shortest wavelength side is set to 1, an absorbance at a maximal absorption wavelength existing on a shortest wavelength side is 0.6 to 2.0,
- wherein the infrared-absorbing coloring agent comprises a compound represented by Formula (PP-2):
- wherein, in Formula (PP-2), R1a represents an alkyl group;
- R1b represents a substituent;
- R3, R4, R5, and R6 each independently represent a cyano group or a heteroaryl group;
- R7 and R8 each indecently represent —BR9R10 wherein R9 and R10 each independently represent an aryl group;
- L1 represents an aliphatic hydrocarbon group, —O—, or an (n2+1)-valent linking group consisting of a combination of these groups;
- X1 represents an acid group or a basic group;
- n1 represents 0;
- n2 represents 1;
- and m1 represents 1.
12 more elements
Dependencies are inferred from the claim text.