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. 30, 2023
Filed:
May. 10, 2019
Apple Inc., Cupertino, CA (US);
Junhua Tan, Saratoga, CA (US);
Shengkui Gao, San Jose, CA (US);
Myungjoon Choi, Sunnyvale, CA (US);
Injae Hwang, Cupertino, CA (US);
Chaohao Wang, Sunnyvale, CA (US);
Myung-Je Cho, San Jose, CA (US);
Hyunwoo Nho, Palo Alto, CA (US);
Sun-Il Chang, San Jose, CA (US);
Jesse A. Richmond, San Francisco, CA (US);
Kingsuk Brahma, Mountain View, CA (US);
Jie Won Ryu, Santa Clara, CA (US);
Shiping Shen, Cupertino, CA (US);
Yunhui Hou, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
External compensation of display panels may employ measurement or sensing circuitry configured to measure the output of a pixel and compensate for variations. Due to effects from the sensing circuitry, a mismatch between a target current and the actual current in the pixel may occur. Systems and methods that compensate for the effects from sensing circuitry and reduce or mitigate the mismatch are described. Systems and methods described herein include compensation circuitry that is capable of employing correction factors to compensate for the effects due to the presence of sensing circuitry. Methods for determining the correction factor are also described.