Apple Inc.

Haitao Li

Sunmin Jang

Hopil Bae

Xiang Lu

Stanley B Wang

Ce Zhang

Young Don Bae

Hari P Paudel

Wei Hsin Yao

Mahesh B Chappalli

Mahdi Farrokh Baroughi

Mario Martinis

Saif Choudhary

Nikhil Acharya

Yongjie Jiang

Yaser Azizi

William Matthew Pender Paul

Ionut A Mirel

Baris Posat

SeyedAli TaheriTari

Mojtaba Fallahpour

Gautam Agrawal

Shengzhe Jiao

Jeongsup Lee

Giovanni Azzellino

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

Electronic displays and electronic devices including such electronic displays and antennas are provided for improved transmission of signals through circuitry of the electronic display. The electronic display may include multiple power supply tiles that are separated with non-conductive gaps to reduce circulation of eddy currents induced by the transmission signals. Moreover, voltage supply routing paths within the power supply tiles may be grouped to provide non-conductive gaps within the power supply tiles. Accordingly, the antenna may provide the transmission signals through the electronic display with improved efficiency based on reducing surface currents (e.g., eddy currents) on the electronic display.

Display and antenna co-design to reduce antenna transmission loss

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

In accordance with embodiments of the present disclosure, a device may include a pulsed emission electronic display having multiple display pixels in order to display an image frame. The display may pulse one or more display pixels of over a plurality of sub-frames within the image frame based on display image data. The device may also include image processing circuitry to generate the display image data based on source image data indicative of an image to be displayed during the image frame. Additionally, the image processing circuitry may dither an order of the plurality of sub-frames.

Spatiotemporal dither for pulsed digital display systems and methods

Growing community of inventors

Mountain View, CA, United States of America

Haitao Li