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. 16, 2012
Filed:
May. 04, 2010
Tetsuya Kawamura, Mobara, JP;
Masashi Sato, Mobara, JP;
Masanori Ookawa, Katsuura, JP;
Kenta Kamoshida, Tokorozawa, JP;
Nagatoshi Kurahashi, Ooamishirasato, JP;
Hiroaki Iwato, Mobara, JP;
Tetsuya Kawamura, Mobara, JP;
Masashi Sato, Mobara, JP;
Masanori Ookawa, Katsuura, JP;
Kenta Kamoshida, Tokorozawa, JP;
Nagatoshi Kurahashi, Ooamishirasato, JP;
Hiroaki Iwato, Mobara, JP;
Hitachi Displays, Ltd., Chiba-ken, JP;
Panasonic Liquid Crystal Display Co., Ltd., Hyogo-ken, JP;
Abstract
A liquid crystal display device includes pixels, each of which includes a first transistor and a second transistor. The size of the first transistor is larger than the size of the second transistor. In addition, channel widths and gate widths for the first transistor are larger than those of the second transistor. Also, the first transistor is located to be closer to a drain signal line provided for the pixel than the second transistor. In normal operation, the first transistor is coupled to the drain signal line and the second transistor is floating. However, if an abnormality occurs in the first transistor, it is cut off from the drain signal line and the second transistor is connected to the drain signal line by a repair line.