公开(公告)号：US20230014478A1

公开(公告)日：2023-01-19

申请号：US17949629

申请日：2022-09-21

Applicant: Apple Inc.

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

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

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：US11200867B1

公开(公告)日：2021-12-14

申请号：US16563622

申请日：2019-09-06

Applicant: Apple Inc.

Inventor： Maofeng Yang ,  Shengkui Gao ,  Paolo Sacchetto ,  Weijun Yao ,  Yongjun Li ,  Jiayi Jin ,  Pyungwoo Yeon ,  Michael Hong Yeol Lim ,  Peter F. Holland ,  Ross Thompson

IPC: G09G5/10 ,  G09G3/34 ,  G09G3/36 ,  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：US11081053B2

公开(公告)日：2021-08-03

申请号：US16283481

申请日：2019-02-22

Applicant: Apple Inc.

Inventor： Jiayi Jin ,  David A. Doyle ,  Kyung Hoae Koo ,  Maofeng Yang ,  Michael H. Lim ,  Paolo Sacchetto ,  Timothy M. Johnson ,  Venkatesh Rajendran ,  Weijun Yao ,  Yue Jack Chu

IPC: G09G3/3258 ,  G09G3/3266 ,  H01L29/786

Abstract: A display may have an array of organic light-emitting diode display pixels. Each display pixel may include a drive transistor coupled in series with one or more emission transistors and a respective organic light-emitting diode (OLED). A semiconducting-oxide transistor may be coupled between a drain terminal and a gate terminal of the drive transistor to help reduce leakage during low-refresh-rate display operations. To compensate for variations in the threshold voltage of the semiconducting-oxide transistor, the magnitude of a high voltage level of a scan control signal provided to the gate terminal of the semiconducting-oxide transistor may be adjusted. Sensing circuitry may be used to sense a display current while displaying a calibration image. The sensed display current may be compared to an expected display current associated with the calibration image. Processing circuitry may update the high voltage level based on the actual display current compared to the expected display current.

公开(公告)号：US10930219B2

公开(公告)日：2021-02-23

申请号：US16323751

申请日：2017-08-14

Applicant: Apple Inc.

Inventor： Cheng Chen ,  Jason C. Sauers ,  Fletcher R. Rothkopf ,  David W. Lum ,  Chun-Yao Huang ,  Enkhamgalan Dorjgotov ,  Graham B. Myhre ,  Bennett S. Wilburn ,  Paolo Sacchetto ,  Shih Chang Chang ,  Wonjae Choi ,  Cheuk Chi Lo

IPC: G09G3/3225 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/20 ,  G09G3/36

Abstract: An electronic device such as a head-mounted device may have displays. The display may have regions of lower (L) and higher (M, H) 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.

公开(公告)号：US20210049962A1

公开(公告)日：2021-02-18

申请号：US17088263

申请日：2020-11-03

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Chih-Wei Yeh ,  Chin-Wei Lin ,  Hung Sheng Lin ,  Hyunwoo Nho ,  Injae Hwang ,  Jie Won Ryu ,  Junhua Tan ,  Paolo Sacchetto ,  Rui Zhang ,  Shengkui Gao ,  Sun-Il Chang ,  Wei H. Yao ,  Howard H. Tang

IPC: G09G3/3233 ,  G09G3/3275

Abstract: An apparatus receives current image frame data and data relating to at least one previous image frame for an electronic display. One or more parameters related to hysteresis of transistors in the electronic display are sensed. A correlation device, such as a look-up table, receives the sensed parameter or parameters and the data relating to one or more image frames, and uses this information, at least in part, to output an appropriate compensation signal for the current image frame data. The compensated current image frame data may then be supplied to the electronic display to reduce or eliminate the effects of hysteresis on the displayed image.

公开(公告)号：US10825385B2

公开(公告)日：2020-11-03

申请号：US15701056

申请日：2017-09-11

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Chih-Wei Yeh ,  Chin-Wei Lin ,  Hung Sheng Lin ,  Hyunwoo Nho ,  Injae Hwang ,  Jie Won Ryu ,  Junhua Tan ,  Paolo Sacchetto ,  Rui Zhang ,  Shengkui Gao ,  Sun-Il Chang ,  Wei H. Yao ,  Howard H. Tang

IPC: G09G3/3233 ,  G09G3/3275

Abstract: An apparatus receives current image frame data and data relating to at least one previous image frame for an electronic display. One or more parameters related to hysteresis of transistors in the electronic display are sensed. A correlation device, such as a look-up table, receives the sensed parameter or parameters and the data relating to one or more image frames, and uses this information, at least in part, to output an appropriate compensation signal for the current image frame data. The compensated current image frame data may then be supplied to the electronic display to reduce or eliminate the effects of hysteresis on the displayed image.

公开(公告)号：US10796629B2

公开(公告)日：2020-10-06

申请号：US16181212

申请日：2018-11-05

Applicant: APPLE INC.

Inventor： Kasra Omid-Zohoor ,  Marc J. DeVincentis ,  Paolo Sacchetto ,  Sinan Alousi ,  Yafei Bi

IPC: G09G3/32 ,  G09G3/3225 ,  G09G3/36

Abstract: A flat-panel display device and method to compensate for a voltage drop by supply voltage in the flat-panel display.

公开(公告)号：US10789902B2

公开(公告)日：2020-09-29

申请号：US16113132

申请日：2018-08-27

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Brijesh Tripathi ,  Christopher Philip Alan Tann ,  David S. Zalatimo ,  Guy Cote ,  Hao Nan ,  Marc Albrecht ,  Paolo Sacchetto ,  Sandro H. Pintz

IPC: G09G3/36

Abstract: An electronic device may generate content that is to be displayed on a display. The display may have an array of liquid crystal display pixels for displaying image frames of the content. The image frames may be displayed with positive and negative polarities to help reduce charge accumulation effects. A charge accumulation tracker may analyze the image frames to determine when there is a risk of excess charge accumulation. The charge accumulation tracker may analyze information on gray levels, frame duration, and frame polarity. The charge accumulation tracker may compute a charge accumulation metric for entire image frames or may process subregions of each frame separately. When subregions are processed separately, each subregion may be individually monitored for a risk of excess charge accumulation.

公开(公告)号：US10706817B2

公开(公告)日：2020-07-07

申请号：US16146910

申请日：2018-09-28

Applicant: Apple Inc.

Inventor： Yingying Tang ,  Chaohao Wang ,  Sheng Zhang ,  Yunhui Hou ,  Paolo Sacchetto ,  Koorosh Aflatooni ,  Gokhan Avkarogullari ,  Guy Cote ,  Mahesh B. Chappalli ,  Peter F. Holland

IPC: G09G5/10 ,  G09G3/20 ,  G09G3/3225 ,  G09G3/36 ,  G09G3/3208

Abstract: An electronic device is provided. The electronic device includes a display that is configured to show content that includes a plurality of frames. The plurality of frames includes a first frame that is associated with a pre-transition value. The plurality of frames also includes a second frame that is associated with a current frame value that corresponds to a first luminance. Additionally, the electronic device is configured to determine an overdriven current frame value corresponding to a second luminance that is greater than the first luminance. The electronic device is also configured to display the second frame using the overdriven current frame value.

公开(公告)号：US10657874B2

公开(公告)日：2020-05-19

申请号：US15967892

申请日：2018-05-01

Applicant: Apple Inc.

Inventor： Yingying Tang ,  Chaohao Wang ,  Sheng Zhang ,  Yunhui Hou ,  Paolo Sacchetto ,  Koorosh Aflatooni ,  Gokhan Avkarogullari ,  Guy Cote ,  Mahesh B. Chappalli ,  Peter F. Holland

IPC: G09G3/20 ,  G09G5/06 ,  G09G3/36 ,  G09G3/3208

Abstract: An electronic device is provided. The electronic device includes a display that is configured to show content that includes a plurality of frames. The plurality of frames includes a first frame that is associated with a pre-transition value. The plurality of frames also includes a second frame that is associated with a current frame value that corresponds to a first luminance. Additionally, the electronic device is configured to determine an overdriven current frame value corresponding to a second luminance that is greater than the first luminance. The electronic device is also configured to display the second frame using the overdriven current frame value.