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:
Oct. 07, 2025
Filed:
Jan. 23, 2023
Nichia Corporation, Anan, JP;
Hajime Akimoto, Anan, JP;
NICHIA CORPORATION, Anan, JP;
Abstract
A light emitting device including a plurality of light emitting elements for emitting light of different colors depending on a drive current. The device includes a display, a current driver that supplies the drive current, a lighting controller that controls the current driver so that the light emitting elements emit light of a predetermined emission color and luminance, and an information storage that stores current-chromaticity information for determining a drive current value for driving the light emitting elements, in accordance with the emission color to be emitted by the light emitting elements. The lighting controller determines the drive current value for driving the light emitting elements and an ON period for lighting the light emitting elements by referring to the current-chromaticity information, in accordance with the predetermined emission color and gradation information, and performs lighting driving of the light emitting elements using the drive current from the current driver.