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.:
Date of Patent:
Aug. 26, 2025
Filed:
Jul. 15, 2021
Lg Chem, Ltd., Seoul, KR;
Seo-Young Im, Daejeon, KR;
Duy Hieu Le, Daejeon, KR;
Ho-Yong Lee, Daejeon, KR;
Sang-A Choi, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
A mono-azo dichroic dye compound represented by the following Chemical Formula 1, a composition for polarizing plate, a polarizing plate, and an optical device. In Chemical Formula 1, Z represents any one selected from the group consisting of CN, COOR, indanone and 1,3-dioxoindane, wherein Ris any one selected from the group consisting of alkyl groups, aryl groups, and substituted or non-substituted heteroaryl groups. The mono-azo dichroic dye compound shows excellent dichroic properties, and has excellent heat resistance and photo-resistance, and thus may be used advantageously for a dye-based polarizing plate.