Apple Inc.

Ce Zhang

Hopil Bae

Mahdi Farrokh Baroughi

Sunmin Jang

Hyunwoo Nho

Kingsuk Brahma

Jie Won Ryu

Seung Bum Rim

Young Don Bae

Pablo Moreno Galbis

Haitao Li

Yaser Azizi

Wei Hsin Yao

Chaohao Wang

Paolo Sacchetto

Warren S Rieutort-Louis

Qing Li

Marc Joseph DeVincentis

Shengkui Gao

Hyunsoo Kim

Xiang Lu

Myungjoon Choi

Rungrot Kitsomboonloha

Shatam Agarwal

Pei-En Chang

Alex H Pai

Vehbi Calayir

Stanley B Wang

Yao Shi

Nikhil Acharya

Hari P Paudel

Li-Xuan Chuo

Shawn P Hurley

Zhe Hua

Feng Wen

Steven N Hanna

Shengzhe Jiao

Jeongsup Lee

SeyedAli TaheriTari

A control circuit adjusts a value of a source supply voltage VSSEL provided to a display area in an electronic display. The control circuit also adjusts a voltage Vreset applied to the display area to cause the display area to emit light more uniformly under various ambient conditions (e.g., temperature) surrounding the display area. Dynamically changing Vreset is employed to make anode charging dynamics independent of temperature. The control circuit adjusts the source supply voltage VSSEL and the voltage Vreset together to compensate display pixel hysteresis effects and display artifacts caused by temperature changes and brightness changes of the display area and collectively produce images. Dynamically tuning the Vreset and the VSSEL voltages also saves power and improves gray level accuracy for the electronic display.

Dynamic Vreset and VSSEL tuning for better low gray accuracy and power saving

Electronic devices, displays, and methods are provided for operating an electronic display in coexistence with sensors that could be adversely impacted by the operation of the electronic display. An electronic device may include an electronic display and a sensor. The electronic display may display image content by light emission during an emission period and periodically enter a quiet period in which the light emission of the electronic display is turned off. The sensor may perform sensing operations during the quiet period without interference from the operation of the electronic display.

Electronic display timing to mitigate image artifacts or manage sensor coexistence

To reduce image artifacts induced by temperature variations associated with display pixels of an electronic display, processing circuitry may process temperature sensing data to obtain an average temperature and a temperature distribution of the electronic display. Based on the processed temperature data, the processing circuit may adjust a reference voltage applied to the display pixels to compensate for the average temperate. To further correct for the image artifacts, the processing circuitry may transform image data to luminance domain. Based on the processed temperature data, the processing may adjust luminance vales of the image data to compensate for the temperature distribution.

Two-dimensional temperature sensing and compensation

This disclosure is directed towards systems and methods of power saving in electronic displays based on changing clock signal frequencies supplied to the gate-in-panel (GIP) circuitry during extended blanking modes of the electronic display. The display driver circuitry of the display may reduce and/or halt clock signal frequencies sent to GIP circuitry in the display, to reduce power output during extended blanking modes of the electronic display.

Systems and methods for clock frequency control during low display refresh rates in electronic devices

This disclosure provides various techniques for providing fine-grain digital and analog pixel compensation to account for voltage error across an electronic display. By employing a two-dimensional digital compensation and a local analog compensation, a fine-grain and robust pixel compensation scheme may be provided to the electronic display.

Two-dimensional content-adaptive compensation to mitigate display voltage drop

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Cupertino, CA, United States of America

Ce Zhang