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. 26, 2025
Filed:
Dec. 06, 2023
Xiamen Tianma Display Technology Co., Ltd., Xiamen, CN;
Genshiro Kawachi, Kanagawa, JP;
XIAMEN TIANMA DISPLAY TECHNOLOGY CO., LTD., Xiamen, CN;
Abstract
Each of pixel circuits is controlled by at least a first scanning signal and a second scanning signal. A first scanning circuit supplies the first scanning signal to first scanning lines. A second scanning circuit supplies the second scanning signal to second scanning lines. The first scanning signal is a scanning signal that turns ON/OFF an n-type transistor in a pixel circuit for refresh operation including writing a data voltage to the pixel circuit. The second scanning signal is a scanning signal that controls whether to supply lighting current to a light-emitting element in the pixel circuit. An output of a clamp switching circuit is connected to a first scanning signal line. The clamp switching circuit is controlled by the second scanning signal to keep the first scanning signal line at a low-level potential for at least a part of an emission period.