Invention Grant
- Patent Title: Light-shielding composition, cured film, color filter, light-shielding film, solid-state imaging element, and image display device
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Application No.: US17130760Application Date: 2020-12-22
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Publication No.: US11624001B2Publication Date: 2023-04-11
- Inventor: Tatsuo Ishikawa , Yoshinori Taguchi , Yuki Sakamoto
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JPJP2018-169573 20180911
- Main IPC: C09D151/08
- IPC: C09D151/08 ; G02B1/04 ; G02B5/00 ; C09D7/65 ; C09D7/62 ; C09D4/06 ; C09D5/32

Abstract:
A light-shielding composition includes a light-shielding pigment, a resin, a polymerizable compound, which is a low-molecular-weight compound containing an ethylenically unsaturated group, and a polymerization initiator, in which the light-shielding pigment contains an inorganic particle, and an inorganic compound coating the inorganic particle, the inorganic particle contains one or more nitrogen-containing metal compounds selected from the group consisting of zirconium nitride, zirconium oxynitride, vanadium nitride, vanadium oxynitride, niobium nitride, and niobium oxynitride, the inorganic compound contains a silicon atom, and a contained atom number ratio of a total content of metallic atoms, which are selected from the group consisting of a zirconium atom, a vanadium atom, and a niobium atom, to a content of the silicon atom in a surface of the light-shielding pigment, as determined by X-ray photoelectron spectroscopy, is greater than 1.0.
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