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.:

US 11176890 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 16, 2021

Filed:

Jul. 15, 2020
Applicant:

Sharp Kabushiki Kaisha, Osaka, JP;

Inventors:

Tong Lu, Oxford, GB;

Michael James Brownlow, Oxford, GB;

Tim Michael Smeeton, Oxford, GB;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 5/10 (2006.01); G09G 3/3258 (2016.01);
U.S. Cl.
CPC ...
G09G 3/3258 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0828 (2013.01); G09G 2300/0852 (2013.01); G09G 2320/029 (2013.01); G09G 2320/0233 (2013.01);
Abstract

A display system includes a display panel comprising a plurality of pixel circuits, and a measurement and data processing unit that is external to the display panel. Each pixel circuit includes a light-emitting device having a first terminal connected to a first voltage supply and a second terminal opposite from the first terminal; a first transistor connected between a data voltage supply line from the measurement and data processing unit and the second terminal of the light emitting device; and a second transistor connected between the second terminal of the light-emitting device and a sample line to the measurement and data processing unit. The measurement and data processing unit samples a measured voltage at the second terminal of the light-emitting device through the sample line and outputs a data voltage to the light-emitting device based on the measured voltage to compensate variations in properties of the light-emitting device.


Find Patent Forward Citations

Lu, Tong. (2021). Method of operating a pixel circuit using direct charging and that performs light-emitting device compensation (U.S. Patent No. 11176890). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11176890

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