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:
Aug. 29, 2023
Filed:
Mar. 15, 2022
Wuhan Tianma Micro-electronics Co., Ltd., Wuhan, CN;
Tianma Japan, Ltd., Kanagawa, JP;
Genshiro Kawachi, Kanagawa, JP;
Masamichi Shimoda, Kanagawa, JP;
Yoshihiro Nonaka, Kanagawa, JP;
Jiro Yanase, Kanagawa, JP;
Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan, CN;
TIANMA JAPAN, LTD., Kanagawa, JP;
Abstract
A display device includes a pixel circuit on a substrate, a data line to transmit a data signal for the pixel circuit on the substrate, a power supply line, and an extra voltage supply line different from the power supply line and the data line. The pixel circuit includes a driving transistor to control an amount of electric current supplied to a light-emitting element, a storage capacitor between a gate terminal of the driving transistor and the power supply line, a first switching transistor between the light-emitting element and the driving transistor, a second switching transistor between a source terminal of the driving transistor and the data line, and a third switching transistor between the source terminal of the driving transistor and the extra voltage supply line. The third switching transistor supplies a signal voltage different from the data signal to the driving transistor from the extra voltage supply line.