Invention Grant
- Patent Title: Composition, film, near infrared cut filter, solid-state imaging element, image display device, and infrared sensor
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Application No.: US16908886Application Date: 2020-06-23
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Publication No.: US11513439B2Publication Date: 2022-11-29
- Inventor: Tetsushi Miyata , Takuya Tsuruta
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPJP2018-019248 20180206,JPJP2018-172356 20180914
- Main IPC: G03F7/00
- IPC: G03F7/00 ; C09B57/00 ; G03F7/031 ; G03F7/033 ; G02B5/20 ; H01L27/146

Abstract:
A composition includes a near infrared absorbing pigment and a solvent, in which the near infrared absorbing pigment is at least one selected from a colorant compound which has a cation and an anion in the same molecule, a colorant compound which is a salt of a cationic chromophore and a counter anion, and a colorant compound which is a salt of an anionic chromophore and a counter cation, a D50 particle size in which a cumulative volume in a particle size distribution of particle sizes of the near infrared absorbing pigment is 50% is 100 nm or lower, and d values of Hansen solubility parameters of the near infrared absorbing pigment and the solvent satisfy a predetermined expression.
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