Apple Inc.

Au Optronics Corporation

Chunghwa Picture Tubes, Ltd.

Industrial Technology Research Institute

United Microelectronics Corp.

Chun-Yao Huang

Shih Chang Chang

Szu-Hsien Lee

Ivan Knez

Byung Duk Yang

Hao-Lin Chiu

Cheuk Chi Lo

Kyung Wook Kim

Paolo Sacchetto

Tien-Chien Kuo

Kwang Soon Park

Ming-Chin Hung

Kanghoon Jeon

Bilin Wang

Cheng Kai Chen

Chaohao Wang

Young Bae Park

Enkhamgalan Dorjgotov

Kyung-Wook Kim

Yingkan Lin

Patrick B Bennett

John Z Zhong

Rui Liu

Sunggu Kang

Shih-Chang Chang

Andrew C Lin

Rungrot Kitsomboonloha

Jaein Choi

Michael Slootsky

Gloria Wong

Hairong Tang

Wendi Chang

Paul Stephen Drzaic

Chin-Wei Lin

Hopil Bae

Sheng Zhang

Cheng-Ho Yu

Pin-Miao Liu

Graham Butler Myhre

Wonjae Choi

Hsiao-Wei Cheng

Yu-Cheng Chen

Younggu Lee

Chun-Ming Tang

Wei-Sheng Yu

Fletcher R Rothkopf

Ting-Kuo Chang

Shinya Ono

Jason C Sauers

David W Lum

Howard H Tang

Hiroshi Osawa

Giovanni Carbone

Jan-Ruei Lin

Bennett S Wilburn

Chun-Yuan Hsu

Yih-Chyun Kao

Yong Kwan Kim

Che-Cheng Kuo

Wei Chen

Zhibing Ge

Derek Keith Shaeffer

Abbas Jamshidi Roudbari

Lei Yuan

Jungmin Lee

Hasan Akyol

James E Pedder

ByoungSuk Kim

Ya-Hsiang Tai

Steven E Molesa

Yi Huang

Henry C Jen

Shingo Hatanaka

Fenghua Zheng

Xiaofeng Wang

Mitchell Herman Kline

Chen-Ming Chen

Louis Luh

Xinyu Zhu

Yu-Wu Wang

John T Wetherell

Cheng-Chung Chen

Stanley Bo-Ting Wang

Shang-Chih Lin

Steven M Scardato

Hossein Nemati

Christopher L Boitnott

Pei-En Chang

Hitoshi Yamamoto

Kwang Ohk Cheon

KiBeom Kim

Xuebei Yang

Adam Adjiwibawa

Huai-Yuan Tseng

Jose Antonio Dominguez-Caballero

Chen-Yi Wu

Lu-Sheng Chou

Youngbae Park

Lingtao Wang

Lei Zhao

A pixel circuit for an electronic display may include a memory to store a digital data signal indicative of a value within a data range. The pixel circuit may also include a light-emitting diode to emit light based at least in part on the digital data signal. The pixel circuit may also include an initialization transistor to initialize the pixel circuit before the light-emitting diode emits light and a driving transistor to activate based at least in part on the digital data signal.

Pixel circuitry and operation for memory-containing electronic display

A display system may include a memory external to a pixel that stores a first digital data value, a memory internal to the pixel that stores a second digital data signal, where a combination of the first digital data signal and the second digital data signal may indicate a target gray level assigned to the pixel for a particular image frame. The pixel may be driven for a first duration of time according to the first digital data signal and for a second duration of time according to the second digital data signal.

Dual-memory driving of an electronic display

An organic light-emitting diode (OLED) display may have an array of organic light-emitting diode pixels that each have OLED layers interposed between a cathode and an anode. Voltage may be applied to the anode of each pixel to control the magnitude of emitted light. The conductivity of the OLED layers may allow leakage current to pass between neighboring anodes in the display. To reduce leakage current and the accompanying cross-talk in a display, the pixel definition layer may disrupt continuity of the OLED layers. The pixel definition layer may have an undercut to disrupt continuity of some but not all of the OLED layers. The undercut may be defined by three discrete portions of the pixel definition layer. The undercut may result in a void that is interposed between different portions of the OLED layers to break a leakage path formed by the OLED layers.

Organic light-emitting diode display with pixel definition layers

Systems and methods may reduce or eliminate image artifacts due to a defective pixel of an electronic display. An electronic display may include pixels that respectively include a self-emissive element, pixel drive circuitry that supplies a pixel drive current to drive the self-emissive element, and signal routing circuitry that reduces or eliminates a visual artifact due to a defective pixel among the pixels. The signal routing circuitry may do this by turning off the self-emissive element, supplying image data from the pixel drive circuitry to a first adjacent pixel, or receiving image data from other pixel drive circuitry from the first adjacent pixel or a second adjacent pixel.

Pixel screening and repair

An electronic device may have a display. A gaze detection system may gather information on a user's point of gaze on the display. Based on the point-of-gaze information, control circuitry in the electronic device may produce image data for an image with areas of different resolutions. A full-resolution portion of the image may overlap the point of gaze. Lower resolution portions of the image may surround the full-resolution portion. The display may have a pixel array. The pixel array may include rows and columns of pixels. Data lines may be used to supply data to the columns of pixels in accordance with row selection signals supplied to the rows of pixels. Display driver circuitry may be used to display the image using the pixel array. The display driver circuitry may have row selection circuitry and column expander circuitry that are responsive to a resolution mode selection signal.

Electronic device with foveated display system

An electronic device such as a head-mounted device may have displays. The display may have regions of lower and higher resolution to reduce data bandwidth and power consumption for the display while preserving satisfactory image quality. Data lines may be shared by lower and higher resolution portions of a display or different portions of a display with different resolutions may be supplied with different numbers of data lines. Data line length may be varied in transition regions between lower resolution and higher resolution portions of a display to reduce visible discontinuities between the lower and higher resolution portions. The lower and higher resolution portions of the display may be dynamically adjusted using dynamically adjustable gate driver circuitry and dynamically adjustable data line driver circuitry.

Foveated display

An organic light-emitting diode (OLED) display may have an array of organic light-emitting diode pixels that each have OLED layers interposed between a cathode and an anode. Voltage may be applied to the anode of each pixel to control the magnitude of emitted light. The conductivity of the OLED layers may allow leakage current to pass between neighboring anodes in the display. To reduce leakage current and the accompanying cross-talk in a display, the pixel definition layer may disrupt continuity of the OLED layers. The pixel definition layer may have a steep sidewall, a sidewall with an undercut, or a sidewall surface with a plurality of curves to disrupt continuity of the OLED layers. A control gate that is coupled to a bias voltage and covered by gate dielectric may be used to form an organic thin-film transistor that shuts the leakage current channel between adjacent anodes on the display.

Organic light-emitting diode display with reduced lateral leakage

An electronic device may have a display and a gaze tracking system. The electronic device may display images on the display that have a higher resolution in a portion of the display that overlaps a gaze location than other portions of the display. Timing controller circuitry and column driver circuitry may include interpolation and filter circuitry. The interpolation and filter circuitry may be used to perform nearest neighbor interpolation and two-dimensional spatial filtering on low resolution image data. Display driver circuitry may be configured to load higher resolution data into selected portions of a display. The display driver circuitry may include low and high resolution image data buffers and configurable row driver circuitry. Block enable transistors may be included in a display to allow selected blocks of pixels to be loaded with high resolution image data.

Efficiently transmitting image data to an electronic display may be provided by skipping regions of the electronic display that display a default value. The electronic display may include a number of pixels, a row driver, and a data driver. The row driver may activate a first subset of the pixels for programming. The data driver may program a default pixel value to respective pixels of the first subset of the pixels for which image data has not been received and may program image data to respective pixels of the first subset of the pixels for which image data has been received.

Image data skipping for transmission to electronic display

An electronic display may include an active area having a first pixel formed in the active area, where the first pixel emits light in response to image data. The electronic display may also include a controller to transmit the image data to the first pixel. The first pixel may include an organic light-emitting diode that emits the light in response to the image data, memory to digitally store the image data received from the controller, and driver circuitry to receive the image data from the memory. The driver circuitry may cause the organic light-emitting diode to emit the light in response to the image data.

Memory-in-pixel architecture

An electronic device may include a display. The display includes display driver circuitry for driving data lines routed across the display. The electronic device may have a recessed device housing region, where at least some of the data lines are routed around the recessed region. The data lines being routed around the recessed region may be formed in at least two different metal routing layers. The electronic device may further include additional display driver circuitry for driving data lines from another peripheral housing edge to obviate the need to route around the recessed region. The data lines from the two display driver circuitries can be disconnected at random locations or can be interlaced to achieve spatial interleaving. The display driver circuitry may include demultiplexing circuitry having smaller switches coupled in parallel with larger demultiplexer routing switches to reduce voltage kick and charge injection.

Electronic devices with narrow border displays

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Cupertino, CA, United States of America

Chun-Yao Huang