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:
Mar. 09, 2021
Filed:
Aug. 29, 2019
Apple Inc., Cupertino, CA (US);
Junhua Tan, Saratoga, CA (US);
Hsin-Ying Chiu, San Jose, CA (US);
Sun-Il Chang, San Jose, CA (US);
Yunhui Hou, San Jose, CA (US);
Jie Won Ryu, Santa Clara, CA (US);
Hyunwoo Nho, Palo Alto, CA (US);
Weichuan Yao, San Diego, CA (US);
Shiping Shen, Cupertino, CA (US);
Injae Hwang, Cupertino, CA (US);
Hyunsoo Kim, Mountain View, CA (US);
Myungjoon Choi, Sunnyvale, CA (US);
Shengkui Gao, San Jose, CA (US);
Chaohao Wang, Sunnyvale, CA (US);
Kingsuk Brahma, Mountain View, CA (US);
Jesse Aaron Richmond, San Francisco, CA (US);
Myung-Je Cho, San Jose, CA (US);
Changki Min, San Jose, CA (US);
Wei H. Yao, Palo Alto, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Current-voltage shift determination circuitry of a processing core complex coupled to the electronic display determines total current-voltage shift values at a pixel. The current-voltage shift determination circuitry then determines temperature-based current-voltage shift values at the pixel. The current-voltage shift determination circuitry extracts the temperature-based current-voltage shift values from the total current-voltage shift values to determine age-based voltage degradation values. Display compensation circuitry of the processing core complex adjusts display of image data by the pixel based on the age-based voltage degradation values. In this manner, voltage degradation due to pixel aging may be determined separately from current-voltage shift due to temperature, and, as such, be more accurately compensated for, resulting in better display of image data. Compensation may thus be performed based on the age of the pixels and a sensed temperature at the pixels, instead of by constantly sensing current across the diodes of the pixels.