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:
Jul. 07, 2020
Filed:
May. 18, 2016
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Shige Furuta, Sakai, JP;
Takahiro Yamaguchi, Sakai, JP;
Junichi Yamada, Sakai, JP;
Hidekazu Yamanaka, Sakai, JP;
Yasushi Sasaki, Sakai, JP;
Yuhichiroh Murakami, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Abstract
Provided is a shift register circuit capable of preventing occurrence of malfunction caused by a threshold shift of a thin-film transistor due to an influence of external light. A unit circuit constituting each stage of the shift register circuit includes a plurality of thin-film transistors. The plurality of thin-film transistors are categorized into a first group (T, T, T) whose on-off state is controlled at relatively high on-duty and a second group (T, T, T, T, T, T) whose on-off state is controlled at relatively low on-duty. In such a configuration, a light shielding film (LS) is provided only for the thin-film transistor included in one of the first group and the second group.