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:
Sep. 28, 2021
Filed:
Mar. 29, 2019
Applicant:
Toppan Printing Co., Ltd., Taito-ku, JP;
Inventors:
Assignee:
TOPPAN PRINTING CO., LTD., Taito-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/137 (2006.01); G02F 1/133 (2006.01); G02F 1/1347 (2006.01); G02F 1/1334 (2006.01); G02F 1/1343 (2006.01); G03B 7/26 (2021.01); G03B 9/08 (2021.01);
U.S. Cl.
CPC ...
G02F 1/137 (2013.01); G02F 1/1334 (2013.01); G02F 1/13306 (2013.01); G02F 1/13439 (2013.01); G02F 1/13476 (2013.01); G03B 7/26 (2013.01); G03B 9/08 (2013.01); G02F 1/13345 (2021.01); G02F 1/13347 (2021.01); G02F 2203/01 (2013.01);
Abstract
A light control sheet including a first transparent electrode, a second transparent electrode, a first light control layer positioned between the first and second transparent electrodes, and having light transmission property which is variable by a change in a voltage across the first and second transparent electrodes, and a voltage control unit which applies an AC voltage across the first and second transparent electrodes, and changes a frequency of the AC voltage applied.