公开(公告)号：US11693163B2

公开(公告)日：2023-07-04

申请号：US17017031

申请日：2020-09-10

Applicant: AGC Inc.

Inventor： Kazuhiko Shiono ,  Keigo Matsuura ,  Sayuri Higashitamori ,  Hiroki Hotaka

IPC: G02B1/04 ,  G02B5/20 ,  C09B57/00 ,  G01J1/04 ,  G02B5/22 ,  H01L27/146

CPC classification number: G02B5/208 ,  C09B57/007 ,  G01J1/0488 ,  G02B1/04 ,  G02B5/22 ,  H01L27/14625

Abstract: An optical filter includes an absorption layer which increases a visible light transmittance while having a good near-infrared blocking characteristic, and which is excellent in not only adhesiveness with respect to a layer to be abutted, but also light resistance. The optical filter includes: an absorption layer containing a near-infrared absorbing dye containing a squarylium-based dye and a transparent resin; and an inorganic or organic material in contact with the absorption layer. The squarylium-based dye has a squarylium skeleton and condensed ring structures bonded thereto respectively on both sides thereof, the condensed ring structures each including a benzene ring and a nitrogen atom as an annular atom, each benzene ring having an urethane structure in the second position.

公开(公告)号：US10809428B2

公开(公告)日：2020-10-20

申请号：US15806596

申请日：2017-11-08

Applicant: AGC Inc.

Inventor： Kazuhiko Shiono ,  Keigo Matsuura ,  Sayuri Higashitamori ,  Hiroki Hotaka

IPC: G02B5/20 ,  G02B5/22 ,  C09B57/00 ,  G01J1/04 ,  G02B1/04 ,  H01L27/146

Abstract: An optical filter includes an absorption layer which increases a visible light transmittance while having a good near-infrared blocking characteristic, and which is excellent in not only adhesiveness with respect to a layer to be abutted, but also light resistance. The optical filter includes: an absorption layer containing a near-infrared absorbing dye containing a squarylium-based dye and a transparent resin; and an inorganic or organic material in contact with the absorption layer. The squarylium-based dye has a squarylium skeleton and condensed ring structures bonded thereto respectively on both sides thereof, the condensed ring structures each including a benzene ring and a nitrogen atom as an annular atom, each benzene ring having an urethane structure in the second position.