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. 31, 2022
Filed:
May. 01, 2020
Apple Inc., Cupertino, CA (US);
Shinya Ono, Cupertino, CA (US);
Chin-Wei Lin, San Jose, CA (US);
Gihoon Choo, Santa Clara, CA (US);
Shiping Shen, Cupertino, CA (US);
Jie Won Ryu, Campbell, CA (US);
Zino Lee, Gyeonggi-do, KR;
Hassan Edrees, Cupertino, CA (US);
Ting-Kuo Chang, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A display may include an array of pixels, where each pixel in the array includes an organic light-emitting diode coupled to associated thin-film transistors. The thin-film transistors may be controlled using at least first and second horizontal scan line signals. Loading different data values into any given row in the array may cause the scan line signals to exhibit varying rise/fall times, which results in horizontal crosstalk and luminance non-uniformity across the display. The rise and fall times of the second scan line signal are crucial, so the second scan line signal is driven by two separate scan line drivers formed on both sides of the display. Only the fall time of the first scan line signal is crucial, so the first scan line signal is driven by only one peripheral scan line driver and is coupled to an auxiliary pull-down circuit that is only activated during the pull-down transition.