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:
Apr. 19, 2022
Filed:
Sep. 20, 2018
Sharp Kabushiki Kaisha, Sakai, JP;
Tetsuya Ueno, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
The present application discloses a current-driven display device capable of preventing a decrease in display quality due to luminance gradient or the like caused by a voltage drop in a power supply line while preventing an increase in circuit and processing necessary for driving a pixel circuit. In an organic EL display device, at a connection point of a high-level power supply line ELVDD with a pixel circuit(Pix(n,k)) (n=1 to N; k=1 to M) on each branch wire ELVk, a display control circuit calculates a voltage drop ΔVn=V0−Vn caused by a current flowing in the branch wire ELVk in a data write period for the pixel circuit Pix(n,k), corrects corresponding pixel data (pixel data for Pix(n,k)) dn in input image data based on the voltage drop ΔVn, and generates a driving image data signal Sdda to be given to a data-side drive circuit based on the corrected pixel data dcn.