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:
Oct. 14, 2025
Filed:
May. 27, 2022
Dongwoo Fine-chem Co., Ltd., Iksan-si, KR;
Dong-Hwi Kim, Sejong, KR;
Seung-Won Song, Seoul, KR;
Hong-Jun Ahn, Seoul, KR;
Pyoung-Yun Oh, Pyeongtaek-si, KR;
Yu-Jin Lee, Goyang-si, KR;
DONGWOO FINE-CHEM CO., LTD., Iksan-si, KR;
Abstract
The present invention relates to a transmittance variable optical stack and a manufacturing method therefor, and a smart window comprising same and a vehicle to which the same is applied, the optical stack comprising polarizing plates stacked on both surfaces thereof with a liquid crystal layer, driven according to an electric field, interposed therebetween, wherein the polarizing plates comprise a polarizer and a protective layer formed on at least one surface of the polarizer, a transparent conductive layer is formed in direct contact with the polarizing plate, and the optical stack has a total light transmittance that changes according to the application of voltage.