公开(公告)号：US20190057633A1

公开(公告)日：2019-02-21

申请号：US16146997

申请日：2018-09-28

Applicant: Apple Inc.

Inventor： Yongjun Li ,  Jiayi Jin ,  Maofeng Yang ,  Jun Li ,  Weijun Yao ,  Derek K. Shaeffer ,  Baris Cagdaser

IPC: G09G3/00 ,  G09G3/20 ,  G09G3/3258 ,  G06F3/048

Abstract: A method of adjusting a test gray voltages applied to a component of an electronic display during a test frame between image frames, wherein the adjustment is based at least in part on the control signal to the component during a prior image frame. The method may reduce hysteresis effects on the extraction of sensed currents of the component during the test frame, which may increase the accuracy and/or consistency of determined parameters evaluated from the sensed currents. The determined parameters may include temperature and/or aging of the component. The determined parameters may be used to adjust control signals for the component and other components in a region near the component during the next image frame.

公开(公告)号：US20180308413A1

公开(公告)日：2018-10-25

申请号：US15767637

申请日：2017-07-17

Applicant: Apple Inc.

Inventor： Jiayi Jin ,  Myung-Je Cho ,  Paolo Sacchetto ,  Weijun Yao

IPC: G09G3/20 ,  G06F3/041 ,  G09G3/3208 ,  G09G3/36

CPC classification number: G09G3/3607 ,  G09G3/20 ,  G09G2310/0232 ,  G09G2320/0285 ,  G09G2320/0626

Abstract: A display may have curved edges such as rounded corners. Pixels in the display may be controlled so that the active area of the display has the desired curved edge shape. In order to maximize the apparent smoothness of the curved edge, the display may include circuitry that dims some of the pixels based on their location relative to a spline for the curved edge. The display circuitry may include a multiplication circuit that receives image data as a first input and dimming factors from a gain table as a second input. The image data may include a brightness level for each pixel in the array of pixels. The multiplication circuit may multiply the brightness level for each pixel by its respective dimming factor. This modified image data may then be supplied to the imaging pixels using display driver circuitry.

公开(公告)号：US20240105089A1

公开(公告)日：2024-03-28

申请号：US18470290

申请日：2023-09-19

Applicant: Apple Inc.

Inventor： William Matthew Pender Paul ,  Mario Martinis ,  Jiayi Jin ,  Yongjie Jiang ,  Baris Posat ,  Mojtaba Fallahpour ,  Haitao Li ,  James G. Horiuchi ,  Giovanni Azzellino ,  Weijun Yao ,  Stanley B. Wang ,  Mahdi Farrokh Baroughi

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/08 ,  G09G2330/021

Abstract: 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.

公开(公告)号：US11545110B2

公开(公告)日：2023-01-03

申请号：US17528183

申请日：2021-11-16

Applicant: Apple Inc.

Inventor： Maofeng Yang ,  Shengkui Gao ,  Paolo Sacchetto ,  Weijun Yao ,  Yongjun Li ,  Jiayi Jin

IPC: G09G3/3233 ,  G09G3/34 ,  G09G3/36 ,  G09G5/10 ,  G09G3/32

Abstract: A system may include an electronic display panel having pixels, where each pixel emits light based on a respective programming signal applied to the pixel. The system may also include processing circuitry to determine a respective control signal upon which the respective programing signal for each pixel is based. The processing circuitry may determine each respective control signal based at least in part on approximations of respective pixel brightness-to-data relationship as defined by a function having variables stored in memory accessible to the processing circuitry.

公开(公告)号：US20220093059A1

公开(公告)日：2022-03-24

申请号：US17376125

申请日：2021-07-14

Applicant: Apple Inc.

Inventor： Maofeng Yang ,  Jiayi Jin ,  David A. Doyle ,  Yifan Zhang ,  Weijun Yao ,  Jiye Lee ,  Tae-Wook Koh ,  Mathew K. Mathai ,  Chuang Qian ,  Tsung-Ting Tsai ,  James P. Landry ,  Kiran S. Pillai ,  Injae Hwang ,  Yongjun Li

IPC: G09G5/10 ,  G09G3/20

Abstract: An electronic device may include an electronic display including display pixels to display an image based on compensated image data. The electronic display may also include a stressed reference pixel to exhibit burn-in related aging in response to one or more stress sessions and a non-stressed reference pixel configured to not undergo the one or more stress sessions. Additionally, the electronic device may include image processing circuitry to determine a panel-specific aging profile based on a comparison between one or more properties of the stressed reference pixel and the one or more properties of the non-stressed reference pixel. The image processing circuitry may also generate one or more gain maps based on the panel-specific aging profile and generate the compensated image data by applying the one or more gain maps to input image data.

公开(公告)号：US11271181B1

公开(公告)日：2022-03-08

申请号：US16576615

申请日：2019-09-19

Applicant: Apple Inc.

Inventor： Maofeng Yang ,  Weijun Yao ,  Jiayi Jin ,  Paolo Sacchetto ,  Injae Hwang

IPC: H01L27/146 ,  H01L51/50 ,  G09G3/3233 ,  G09G3/14 ,  H01L27/15 ,  H01L27/28

Abstract: An electronic display having pixels and control circuitry to drive the pixels to display image data even during relatively long presentation times without visual artifacts, such as flicker, are provided. The control circuitry may cause the pixel to perform a threshold voltage sampling and pixel programming phase to store image data for the pixel while accounting for a first threshold voltage of the first transistor. Afterward, an on-bias stress phase may cause a threshold voltage of the first transistor of the plurality of transistors to reach a second threshold voltage. Following the on-bias stress phase, a first emission phase may cause the light-emitting diode to emit light in accordance with the image data, and subsequent on-bias stress phases and subsequent emission phases for the duration of the presentation time may take place without a visible flicker artifact.

公开(公告)号：US11205378B1

公开(公告)日：2021-12-21

申请号：US16563610

申请日：2019-09-06

Applicant: Apple Inc.

Inventor： Maofeng Yang ,  Shengkui Gao ,  Paolo Sacchetto ,  Weijun Yao ,  Yongjun Li ,  Jiayi Jin

IPC: G09G3/3233 ,  G09G3/34 ,  G09G3/36

Abstract: A system may include an electronic display panel having pixels, where each pixel emits light based on a respective programming signal applied to the pixel. The system may also include processing circuitry to determine a respective control signal upon which the respective programing signal for each pixel is based. The processing circuitry may determine each respective control signal based at least in part on approximations of respective pixel brightness-to-data relationship as defined by a function having variables stored in memory accessible to the processing circuitry.

公开(公告)号：US10950679B1

公开(公告)日：2021-03-16

申请号：US16108686

申请日：2018-08-22

Applicant: Apple Inc.

Inventor： Jiayi Jin ,  Chin-Wei Lin ,  Shyuan Yang ,  Weijun Yao

IPC: H01L27/32 ,  G09G3/3275 ,  G09G3/3225 ,  H01L27/12

Abstract: A display may have an array of pixels arranged in rows and columns. The pixels may be organic light-emitting diode pixels that each include an organic light-emitting diode and thin-film transistor circuitry for controlling the diode or may be other suitable display pixels. The pixels may form an active area of the display that displays images. Display driver circuitry may be provided in an inactive border area of the display. The display may include vertical gate lines. The display may also include data lines. The data lines may include vertical data line portions and orthogonal horizontal data line portions coupled to the vertical data line portions with vias. During operation, data from the display driver circuitry may be provided to rows of the pixels using the data lines while the vertical gate lines supply control signals to columns of the pixels.

公开(公告)号：US10657912B2

公开(公告)日：2020-05-19

申请号：US16368394

申请日：2019-03-28

Applicant: Apple Inc.

Inventor： Jiayi Jin ,  Myung-Je Cho ,  Paolo Sacchetto ,  Weijun Yao

IPC: G09G3/36 ,  G09G3/20

Abstract: A display may have curved edges such as rounded corners. Pixels in the display may be controlled so that the active area of the display has the desired curved edge shape. In order to maximize the apparent smoothness of the curved edge, the display may include circuitry that dims some of the pixels based on their location relative to a spline for the curved edge. The display circuitry may include a multiplication circuit that receives image data as a first input and dimming factors from a gain table as a second input. The image data may include a brightness level for each pixel in the array of pixels. The multiplication circuit may multiply the brightness level for each pixel by its respective dimming factor. This modified image data may then be supplied to the imaging pixels using display driver circuitry.

公开(公告)号：US10460642B2

公开(公告)日：2019-10-29

申请号：US15199315

申请日：2016-06-30

Applicant: APPLE INC.

Inventor： Hung Sheng Lin ,  Jiayi Jin ,  Wei H. Yao ,  Hyunwoo Nho ,  Guangmao Xing ,  Weijun Yao ,  Xiaofeng Wang ,  Yafei Bi ,  Haifeng Li

IPC: G09G3/20 ,  G09G3/3208 ,  G09G3/3233

Abstract: Systems, methods, and devices are provided to reduce noise present in sensing circuits used for calibrating light emitting diodes (e.g., organic light emitting diodes) in electronic display devices. Such a system may include a display that renders image data using self-emissive pixels. Values on the pixels may be sensed using a current source that outputs a current and a comparator that receives the current. The comparator changes states when a voltage signal output by the capacitor crosses a first threshold voltage or a second threshold voltage. A controller receives a first time when the comparator component changes states based on the voltage signal, receives a second time when the comparator component changes states based on the voltage signal, determines a current value based on the first time and the second time, and calibrates a pixel based on the current value.