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:
Jul. 29, 2025
Filed:
Jun. 13, 2024
Apple Inc., Cupertino, CA (US);
Majid Gharghi, San Carlos, CA (US);
Tore Nauta, Santa Cruz, CA (US);
Saif Choudhary, San Jose, CA (US);
Chuang Qian, Santa Clara, CA (US);
Hopil Bae, Sunnyvale, CA (US);
Mahdi Farrokh Baroughi, Santa Clara, CA (US);
Xia Li, San Jose, CA (US);
Patrick B Bennett, San Leandro, CA (US);
Ze Yuan, Fremont, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A pulse width modulation and amplitude modulation driving system for a display panel, including related circuits and methods of operation, are described. In an embodiment, a display panel includes a thin film transistor layer comprising a plurality of subpixel circuits. Each subpixel circuit may include a drive transistor, a comparator, and a switch. A plurality of light emitting diodes (LEDs), such as micro-LEDs, may be connected to the plurality of subpixel circuits. Each subpixel circuit can control an LED based on a current amplitude controlled by the drive transistor and a current pulse width controlled by the comparator and the switch. Other aspects are also described and claimed.