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. 25, 2026
Filed:
Jul. 10, 2024
Toppan Holdings Inc., Tokyo, JP;
Tetsushi Yoshida, Taito-ku, JP;
TOPPAN HOLDINGS INC., Tokyo, JP;
Abstract
A light control sheet includes a first transparent electrode layer, a second transparent electrode layer, and a light control layer including a liquid crystal composition having positive dielectric anisotropy and including chiral nematic liquid crystals. A control unit of a light control device controls voltage applied between the transparent electrode layers to a first voltage to bring the light control sheet into a first state of reflecting infrared light and transmitting visible light, controls the voltage applied between the transparent electrode layers to a second voltage to bring the light control sheet into a second state of scattering infrared light and visible light, and controls the voltage applied between the transparent electrode layers to a third voltage to bring the light control sheet into a third state of transmitting infrared light and visible light.