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. 01, 2025
Filed:
Dec. 29, 2021
Sharp Kabushiki Kaisha, Sakai, JP;
Masahiro Mitani, Sakai, JP;
Kohzoh Nakamura, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
In a display device including organic EL elements OLED, a p-channel switching transistor Tis connected at a conductive terminal to a channel region of a p-channel drive transistor T. When holes are trapped in trap levels within the channel region of the drive transistor Twhile the display device presents a white display image, this configuration enables the holes to be extracted through the switching transistor Tto an initialization line Vini. Consequently, a drive current flows through the drive transistor Tin accordance with a data voltage, resulting in no perceptible afterimage even when a gray display image is presented during an immediately subsequent frame.