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. 12, 2025
Filed:
Apr. 12, 2024
Rohm Co., Ltd., Kyoto, JP;
Yusuke Nakakohara, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A light emitting device includes first to L-th light emitting unit circuits, each of which includes a light emitting element configured to emit light by being supplied with a current, and a capacitor configured to accumulate charges for supply to the light emitting element, a charging switching circuit including first to M-th charging switches and configured to switch between supply and non-supply of a charging current to each capacitor, a light emitting switching circuit including first to N-th light emitting switches and configured to switch between supply and non-supply of the accumulated charges of the capacitor to the light emitting element in each of the light emitting unit circuits, and a control circuit configured to control a state of each of the charging switches and a state of each of the light emitting switches.