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:
May. 24, 2022
Filed:
Feb. 25, 2021
Samsung Display Co., Ltd., Yongin, KR;
Ranick Ng, Pleasanton, CA (US);
Younghoon Song, Santa Clara, CA (US);
Amir Amirkhany, Sunnyvale, CA (US);
Abstract
A replica pixel for testing a display IC that includes a driving circuit that drives a display panel and a sensing circuit that senses a received current is presented. The replica pixel includes a replica pixel transistor, which has a first terminal switchably coupled to a power source, a gate coupled to a first node of a capacitor, and a second terminal coupled to a second node of the capacitor. The first node of the capacitor is switchably coupled to a reference voltage Vref. The second node of the capacitor is switchably coupled to a coupling node, wherein the coupling node selectively couples to either the driving circuit or the sensing circuit. The replica pixel is approximately a real pixel without the display element, and may be used to test the display IC without assembling the display IC with a display panel.