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. 22, 2022
Filed:
Jun. 09, 2020
Apple Inc., Cupertino, CA (US);
Hyunsoo Kim, Mountain View, CA (US);
Injae Hwang, Cupertino, CA (US);
Jesun Kim, Cupertino, CA (US);
Jesse A. Richmond, San Francisco, CA (US);
Junhua Tan, Saratoga, CA (US);
Jie Won Ryu, Santa Clara, CA (US);
Hyunwoo Nho, Palo Alto, CA (US);
Kingsuk Brahma, Mountain View, CA (US);
Chaohao Wang, Sunnyvale, CA (US);
Shiping Shen, Cupertino, CA (US);
Myungjoon Choi, Sunnyvale, CA (US);
Myung-Je Cho, San Jose, CA (US);
Rebecca Park, Menlo Park, CA (US);
Sun-Il Chang, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Systems and methods are presently disclosed that compensate for temperature-based parasitic capacitance variation of a pixel of a display by causing a driver transistor of the pixel to enter an ohmic or linear region. A lookup table is generated based on temperatures at the pixel, diode voltages, and target diode currents or luminances at a diode of the pixel. A correction voltage is determined based on a target diode current or luminance, a temperature at the pixel, and the lookup table. A data voltage is applied corresponding to the target diode current or luminance and the correction voltage to the driver transistor.