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. 13, 2020
Filed:
Sep. 20, 2017
Sharp Kabushiki Kaisha, Sakai-shi, Osaka, JP;
Sakai Display Products Corporation, Sakai-shi, Osaka, JP;
Masahiro Mitani, Sakai, JP;
Kohzoh Nakamura, Sakai, JP;
Kiyoshi Minoura, Sakai, JP;
Hiroshi Tsuchiya, Sakai, JP;
Yozo Narutaki, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
SAKAI DISPLAY PRODUCTS CORPORATION, Sakai-shi, Osaka, JP;
Abstract
A display apparatus according to one embodiment comprises pixels each comprising a liquid crystal display element (LC element) and an organic EL display element (EL element). The EL element comprises an anode and a cathode electrically separated from each electrode of the LC element. Each pixel comprises a first transistor which changes the magnitude of a current flowing through the EL element based on the potential of a first bus line; a second transistor which electrically separates the first bus line and the LC element; and a third transistor which electrically connects the first and second transistor with the first bus line. A method for driving a display device according to one embodiment reduces the potential difference between the pixel electrode and the counter electrode before turning off the second transistor during switching from display by the LC element to display by the EL element.