Apple Inc.

Other

Saif Choudhary

Hopil Bae

Mahdi Farrokh Baroughi

Tore Nauta

Kapil Vinod Sakariya

Ion Bita

Sunggu Kang

Hasan Akyol

James E Pedder

Henry C Jen

Shingo Hatanaka

Xiang Lu

Xia Li

Wei Hsin Yao

Mahesh B Chappalli

Chuang Qian

Majid Gharghi

Patrick B Bennett

Thomas Charisoulis

Sunmin Jang

Haitao Li

Young Don Bae

Hari P Paudel

Ze Yuan

Ionut A Mirel

Gautam Agrawal

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.

Pulse width modulation and amplitude modulation driving system for display panels

Display panel redundancy schemes and methods of operation are described. In an embodiment, and display panel includes an array of drivers (e.g. microdrivers), each of which including multiple portions to independently receive control and pixel bits. In an embodiment, each driver portion is to control a group of redundant emission elements.

Display panel redundancy schemes

A display system of a display includes multiple primary light emitting diodes and multiple secondary light emitting diodes. The multiple primary light emitting diodes may emit light, in which at least a first primary light emitting diode of the multiple primary light emitting diodes is shorted. Moreover, the multiple secondary light emitting diodes may emit light. At least a first secondary light emitting diode of the multiple secondary light emitting diodes is associated with the first primary light emitting diode, and the first secondary light emitting diode may emit light based at least in part on the first primary light emitting diode being shorted.

Tandem micro-light emitting diode redundancy architecture

To reduce image artifacts and non-uniformity associated with a display pixel of an electronic display, processing circuity may adjust a luminance value corresponding to a display pixel according to a per-pixel gain mask, a per-pixel anode mask, or both. To further correct for the non-uniformity, the processing circuitry may convert the luminance value to a digital code based on a curve associated with an anode on which the display pixel is located.

Display pixel non-uniformity compensation

Growing community of inventors

San Jose, CA, United States of America

Saif Choudhary