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. 22, 2013
Filed:
Oct. 29, 2002
Toshiaki Yoshihara, Kawasaki, JP;
Shinji Tadaki, Kawasaki, JP;
Tetsuya Makino, Kawasaki, JP;
Hironori Shiroto, Kawasaki, JP;
Yoshinori Kiyota, Kawasaki, JP;
Keiichi Betsui, Kawasaki, JP;
Toshiaki Yoshihara, Kawasaki, JP;
Shinji Tadaki, Kawasaki, JP;
Tetsuya Makino, Kawasaki, JP;
Hironori Shiroto, Kawasaki, JP;
Yoshinori Kiyota, Kawasaki, JP;
Keiichi Betsui, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In a liquid crystal display device that uses a liquid crystal material having spontaneous polarization and is actively driven by a TFT, a voltage corresponding to image data is applied twice by driving the TFT of each pixel electrode on a line by line basis of a liquid crystal panel, during writing in one frame. During erasure in one frame, voltage application to liquid crystal by batch selection of all the pixel electrodes is performed three times. With this three times of voltage application, it is possible to achieve a black display state in each pixel and make the stored charge amount at the liquid crystal in each pixel substantially zero.