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. 26, 2023
Filed:
May. 31, 2019
Sharp Kabushiki Kaisha, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
The present application discloses a current-driven display device that can perform accurate external compensation in consideration of a temperature distribution in a display panel while preventing the configuration from being complicated. A display portion of an organic EL display device is provided with a plurality of temperature detection circuits in addition to pixel circuits arranged in a matrix. A data-side drive circuit measures a current flowing through a transistor in each temperature detection circuit. A display control circuit obtains a temperature from the measured value based on a temperature characteristic of the transistor, estimates a temperature of each pixel circuit from the temperature, corrects a current value measured at the time of characteristic detection for a drive transistor of each pixel circuit considering the estimated temperature, and updates correction data for compensating for variations in the threshold voltage and gain of the drive transistor based on the corrected current value.