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:
Jan. 25, 2022
Filed:
Mar. 23, 2020
Apple Inc., Cupertino, CA (US);
Cheng-Ho Yu, Milpitas, CA (US);
Chin-Wei Lin, San Jose, CA (US);
Shyuan Yang, Burlingame, CA (US);
Ting-Kuo Chang, San Jose, CA (US);
Tsung-Ting Tsai, Cupertino, CA (US);
Warren S. Rieutort-Louis, Cupertino, CA (US);
Shih-Chang Chang, Cupertino, CA (US);
Yu Cheng Chen, San Jose, CA (US);
John Z. Zhong, Saratoga, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A display may have an array of pixels. Display driver circuitry may supply data and control signals to the pixels. Each pixel may have seven transistors, a capacitor, and a light-emitting diode such as an organic light-emitting diode. The seven transistors may receive control signals using horizontal control lines. Each pixel may have first and second emission enable transistors that are coupled in series with a drive transistor and the light-emitting diode of that pixel. The first and second emission enable transistors may be coupled to a common control line or may be separately controlled so that on-bias stress can be effectively applied to the drive transistor. The display driver circuitry may have gate driver circuits that provide different gate line signals to different rows of pixels within the display. Different rows may also have different gate driver strengths and different supplemental gate line loading structures.