Apple Inc.

Stanley B Wang

Mahdi Farrokh Baroughi

Yongjie Jiang

Christoph Horst Krah

Hopil Bae

Haitao Li

Nikhil Acharya

Sunmin Jang

Hari P Paudel

Shengzhe Jiao

Kapil Vinod Sakariya

Tore Nauta

Xiang Lu

Young Don Bae

Hjalmar Edzer Ayco Huitema

Bin Huang

Jeongsup Lee

Xia Li

Seung Bum Rim

Weijun Yao

Chen Chen

Wei Xiong

Steven E Molesa

Mario Martinis

Henry C Jen

James G Horiuchi

Jiayi Jin

John T Wetherell

Majid Gharghi

Pablo Moreno Galbis

Sandeep Chalasani

Feng Yu

Ce Zhang

Yaser Azizi

William Matthew Pender Paul

Eric A Hildebrandt

Baris Posat

Dongwon Kwon

Giovanni Azzellino

Anatole Huang

Mittul Gupta

William Paul

Mojtaba Fallahpour

SeyedAli TaheriTari

Jialin Liu

Arjunsimha Chaturbhuj

Ruofan Zhang

An electronic device may include an electronic display including display pixels to display an image based on compensated image data. As image data is written to a pixel in the row of pixels, capacitive coupling at a driver may lead to distortion on the driver. In particular, the capacitive coupling may cause distortion at a storage capacitor, which may lead to current droop at the pixel. The current droop may be reduced or eliminated in each pixel by performing pixel compensation. The pattern of the pixel compensation may be selected such that, over a number of subframes, an average amount of light is the same or similar to what would be emitted had pixel compensation been performed on each pixel in each subframe.

In-pixel compensation for current droop and in-pixel compensation timing

A display system may include a plurality of light emitting diodes to emit light, where each of the light emitting diodes are connected in parallel and a plurality of first switches respectively coupled to the plurality of light emitting diodes. A first switch of the plurality of first switches is coupled in parallel to a first light emitting diode. The first switch may short the first light emitting diode of the plurality of light emitting diodes through a defined resistor having a defined value that therefore draws a defined short circuit current.

Systems and methods for mitigating micro-LED failures

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

An electronic device can include integrated micro circuitry configurable for optical sensing and touch and/or proximity sensing. An integrated touch screen can include light emitting diodes or organic light emitting diodes and chiplets. In some examples, the LEDs/OLEDs and chiplets can be disposed in a visible area of the integrated touch screen. In some examples, some or all of the chiplets can be disposed outside of the visible area of the integrated touch screen. In some examples, the chiplets can include display driving circuitry and touch sensing circuitry, and can optionally perform optical sensing using the touch sensing circuitry. In some examples, the chiplets can include separate touch chiplets configured to perform touch sensing (and/or optical sensing) and display chiplets configured to perform display functionality (and optionally provide some switching functionality).

Touch and light sensing using integrated micro circuitry

Display panel redundancy schemes and redundancy building blocks are described. In an embodiment, pixel driver chips are connected to both primary and redundant strings of LEDs within a local passive matrix, and driver terminal switches within the pixel driver chip are used to select either the primary or redundant strings of LEDs.

Pixel driver redundancy schemes

An electronic device including a touch screen (e.g., an integrated touch screen using chiplets) can be configured for low-noise reference voltage sampling and subsequent touch sensing using the sampled reference voltage. An integrated touch screen can include multiple regions, and each of the multiple regions can include multiple touch node electrodes. Chiplets can be configured to sample one or more reference voltage pins during an analog quiet time to obtain one or more sampled low-noise reference signals localized to each chiplet. The chiplets can then be configured to sense capacitance at some of or at each of the regions (e.g., using chiplets coupled to some of the touch node electrodes of each of the regions and configured to operate in a touch sensing configuration) using the one or more sampled low-noise reference signals.

Methodology and application of sampled low noise reference voltage

Mitigation techniques can be used to reduce noise generated by wireless communication circuitry (e.g., near-field communication circuitry) in an electronic device including a display, touch, and wireless communication circuitry. In some examples, a touch screen can have a backplane including a mesh of routing traces connected to an array of chiplets. In some examples, the chiplets can repeat signals to prevent the accumulation of noise induced by an NFC coil. In some examples, the ratio between vertical and horizontal resistances of routing traces can be configured to mitigate noise induced by the coil. In some examples, the routing traces of the mesh can be configured to share a common geometric centroid. In some examples, a plurality of routing traces can be routed in a twisted pair configuration. In some examples, the routing traces and chiplets can be routed to minimize traversal through regions of relatively high electromagnetic field.

Noise mitigation techniques for touch screen in proximity to wireless communication circuitry

A display may be formed by an array of light-emitting diodes mounted to the surface of a display substrate. The light-emitting diodes may be inorganic light-emitting diodes formed from separate crystalline semiconductor structures. An array of pixel control circuits may be used to control light emission from the light-emitting diodes. Each pixel control circuit may be configured to control one or more respective passive matrices. To control partial pixel cells in the display, a donor pixel control circuit in a partial pixel cell may control the pixels in a receptor partial pixel cell without a pixel control circuit. To mitigate the size of an inactive area of the display, fanout signal lines for the display may be formed in the light-emitting active area of the display. The fanout signal lines may be formed between a row of pixel control circuits and a bottom edge of the light-emitting active area.

Local passive matrix displays

Growing community of inventors

Cupertino, CA, United States of America

Stanley B Wang