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. 06, 2021
Filed:
Nov. 26, 2019
Sharp Kabushiki Kaisha, Sakai, JP;
Kazuya Toyota, Sakai, JP;
Katsunori Tanaka, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
The display device is provided with a precharge power source that supplies only precharge voltages (precharge voltages corresponding to the maximum gradation value for each of the positive polarity and the negative polarity) corresponding to one gradation value. The source driver includes a data voltage generation circuit configured to generate data voltage depending on input data and an output circuit configured to apply the data voltage to each source bus line after applying precharge voltage. The output circuit changes the length of the precharging period during which the precharge voltage is applied to each source bus line, depending on input data.