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. 06, 2020
Filed:
Apr. 22, 2019
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Akira Tagawa, Sakai, JP;
Yasuaki Iwase, Sakai, JP;
Takuya Watanabe, Sakai, JP;
Takatsugu Kusumi, Sakai, JP;
Yohei Takeuchi, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
There is adopted a gate driver with a system of applying a direct current voltage as an active scanning signal to a gate bus line through a buffer transistor in a unit circuit that composes a shift register, and a display device is provided with a direct current voltage generation circuit that generates the direct current voltage. The direct current voltage generation circuit changes a voltage level of the direct current voltage in each frame period. For example, when a direct current voltage input terminal is provided on a vertical scanning end side, the direct current voltage generation circuit gradually decreases the voltage level of the direct current voltage in each frame period.