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:
Apr. 06, 2021
Filed:
Oct. 11, 2019
Applicant:
Toppan Printing Co., Ltd., Tokyo, JP;
Inventor:
Hiroshi Takahashi, Tokyo, JP;
Assignee:
TOPPAN PRINTING CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01);
U.S. Cl.
CPC ...
G09G 3/3696 (2013.01); G09G 2330/021 (2013.01);
Abstract
There is provided a liquid crystal optical modulation device which performs light control drive for a liquid crystal panel, the device including a voltage limiting section that limits a power supply voltage, which is applied to the liquid crystal panel from a commercial AC source, and a control section that controls a voltage applied to the liquid crystal panel through the voltage limiting section in accordance with a phase of the power supply voltage of the commercial AC source.