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:
Dec. 12, 2023
Filed:
Jan. 12, 2022
Canon Kabushiki Kaisha, Tokyo, JP;
Akihito Komazawa, Kanagawa, JP;
Hiromasa Tsuboi, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The light emitting device comprises: a plurality of pixels, each having a light-emitting element, a driving transistor configured to drive the light-emitting element, a capacitor configured to hold a threshold voltage of the driving transistor, a signal line, a first switch configured to connect the signal line and a control electrode of the driving transistor, and a second switch configured to connect a first main electrode of the driving transistor and a predetermined node; and a driving circuit configured to drive the signal line. In a preparation period in which the threshold voltage is held in the capacitor, the first switch is controlled to be on and the second switch is controlled to be off, and the driving circuit drives the signal line at a voltage level selected from a plurality of different voltage levels.