Title:
NEAR-INFRARED-ABSORBING COLORANT, OPTICAL FILTER, AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/230660
Kind Code:
A1
Abstract:
The present invention relates to a near-infrared-absorbing colorant comprising a compound represented by formula (A). In formula (A), R11 to R14 are each independently a hydrogen atom, a halogen atom, or a hydroxyl, alkyl, aryl, or alaryl group, and R11 and R12, R12 and R13, and R13 and R14 may be linked to each other to respectively form rings; and R15 and R16 are each independently an alkyl or alaryl group, and R15 and R16 may be linked to each other to form a 5- to 10-membered heterocycle in cooperation with the nitrogen atom.
More Like This:
Inventors:
HATTORI SHIGEKI (JP)
YOSHIOKA SHOTA (JP)
YOSHIOKA SHOTA (JP)
Application Number:
PCT/JP2019/020931
Publication Date:
December 05, 2019
Filing Date:
May 27, 2019
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
C09B57/00; C09K3/00; G02B5/22; G02B5/28; H01L27/146
Domestic Patent References:
| WO2017104283A1 | 2017-06-22 |
Foreign References:
| JP2002080764A | 2002-03-19 |
Other References:
KEIL, D ET AL.: "Synthesis Characterization of 1,3-Bis-(2-dialkylamino-5-thienyl)-substituted Squaraines - A Novel Class of Intensively Coloured Panchromatic Dyes", DYES AND PIGMENTS, vol. 17, 1991, pages 19 - 27, XP000226923, DOI: 10.1016/0143-7208(91)85025-4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
Download PDF: