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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12479989 B1

PDFFull Text
Date of Patent:
Nov. 25, 2025

Filed:

Dec. 13, 2021

Wavelength selective absorption filter and organic electroluminescent display device

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventors:

Nobutaka Fukagawa, Minami-ashigara, JP;

Hirofumi Toyama, Minami-ashigara, JP;

Daisuke Sasaki, Minami-ashigara, JP;

Yoshihiro Jimbo, Minami-ashigara, JP;

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Bijan Ahvazi

Int. Cl.
CPC ...
H01L 51/52 (2006.01); C08K 5/3445 (2006.01); C08K 5/353 (2006.01); C08L 25/06 (2006.01); C09B 23/16 (2006.01); C09B 57/00 (2006.01); C09B 67/22 (2006.01); G02B 1/04 (2006.01); H10K 50/86 (2023.01); H10K 59/80 (2023.01); G02B 5/22 (2006.01);
U.S. Cl.
CPC ...
C08L 25/06 (2013.01); C08K 5/3445 (2013.01); C08K 5/353 (2013.01); C09B 23/166 (2013.01); C09B 57/007 (2013.01); C09B 67/0034 (2013.01); G02B 1/04 (2013.01); H10K 50/865 (2023.02); H10K 59/8792 (2023.02); G02B 5/22 (2013.01);
Abstract

There are provided a wavelength selective absorption filter including a resin, and four types of dyes A to D each having a main absorption wavelength range in different specific wavelength regions, in which an absorbance Ab (λ) of the wavelength selective absorption filter at a wavelength λ nm satisfies specific Relational Expressions (I) to (VI), and an organic electroluminescent display device.

Find Patent Forward Citations

Fukagawa, Nobutaka. (2025). Wavelength selective absorption filter and organic electroluminescent display device (U.S. Patent No. 12479989). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12479989

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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