公开(公告)号：US10824279B2

公开(公告)日：2020-11-03

申请号：US14869409

申请日：2015-09-29

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Yingxuan Li ,  Hung Sheng Lin ,  Paolo Sacchetto ,  Szu-Hsien Lee ,  Weijun Yao ,  Howard Tang

IPC: G06F3/044 ,  G06F1/16 ,  G06F3/041 ,  G09G3/36 ,  G09G3/32 ,  G06F3/047

Abstract: A system is disclosed. The system can comprise drive circuitry included in a first component of the system, the drive circuitry configured to drive a first touch electrode on a touch sensor panel. The system can also comprise a driving line configured to couple an output of the drive circuitry to the first touch electrode. The system can also comprise a feedback line configured to couple the output of the drive circuitry to an input of the drive circuitry, wherein a first end of the feedback line is coupled to the input of the drive circuitry at the first component, and a second end of the feedback line is configured to be coupled to the output of the drive circuitry at a second component, different from the first component, of the system.

公开(公告)号：US20200342678A1

公开(公告)日：2020-10-29

申请号：US16926113

申请日：2020-07-10

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Aleksandr M. Movshovich ,  Arthur Y. Zhang ,  Chaohao Wang ,  Moinul H. Khan ,  Paolo Sacchetto ,  Yunhui Hou

IPC: G06T19/00 ,  G02B27/01 ,  H04N5/232

Abstract: An electronic device may have a camera and a display. The display may be configured to display virtual reality content for a user in which no real-world content from the camera is displayed or mixed reality content in which a combination of real-world content from the camera and overlaid virtual reality content is displayed. Control circuitry in the device may adjust the display and camera while transitioning between virtual reality and mixed reality modes. The control circuitry may reconfigure the camera to exhibit a desired frame rate immediately upon transitioning from virtual reality mode to mixed reality mode. Transitions between modes may be accompanied by smooth transitions between frame rates to avoid visible artifacts on the display. The camera frame rate may be synchronized to the display frame rate for at least part of the transition between the virtual reality and mixed reality modes.

公开(公告)号：US20200302871A1

公开(公告)日：2020-09-24

申请号：US16893373

申请日：2020-06-04

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Chih-Wei Yeh ,  Yunhui Hou ,  Chaohao Wang ,  Wei H. Yao ,  Paolo Sacchetto ,  Derek K. Shaeffer ,  Henry C. Jen ,  Shingo Hatanaka ,  Hasan Akyol ,  Mahdi Farrokh Baroughi ,  Hopil Bae

IPC: G09G3/3258 ,  G09G3/3233

Abstract: An electronic device includes a display having an active array and a reference array. The active array includes a pixel and the reference array includes a reference pixel. The electronic device also includes processing circuitry communicatively coupled to the display. The processing circuitry is configured to instruct the active array to drive the pixel based at least in part on a set of degradation ratios and gamma tap points for each brightness setting of the display based at least in part on a reconstructed current-voltage curve.

公开(公告)号：US20200243012A1

公开(公告)日：2020-07-30

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

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：US10650741B2

公开(公告)日：2020-05-12

申请号：US16132320

申请日：2018-09-14

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Chengrui Le ,  Hopil Bae ,  Mahdi Farrokh Baroughi ,  David W. Lum ,  Adam Adjiwibawa ,  Chaohao Wang ,  Paolo Sacchetto ,  Wei H. Yao ,  Enkhamgalan Dorjgotov ,  Michael Slootsky ,  Giovanni Carbone ,  Derek K. Shaeffer ,  Henry C. Jen ,  Shingo Hatanaka ,  Hasan Akyol

IPC: G09G3/3233 ,  G09G3/3258 ,  G09G3/3208

Abstract: An electronic device includes a display having a reference array that includes a first pixel. The display also includes a first emission power supply coupled to the first pixel. The display further includes an active array having a second pixel. The display also includes a second emission power supply coupled to the second pixel.

公开(公告)号：US10580381B2

公开(公告)日：2020-03-03

申请号：US15842364

申请日：2017-12-14

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Chaohao Wang ,  Paolo Sacchetto ,  Yunhui Hou

IPC: G09G3/36

Abstract: The present disclosure relates to systems and methods of accounting for the kickback voltage in an LCD display. For example, a method may include obtaining, via a processor, a difference between a nominal voltage of a common electrode of a display and a measured voltage of the common electrode. The processor may obtain image data associated with an image to be displayed on the display. The processor may adjust the image data of a pixel of the display based on the difference. The processor may output an image signal indicative of the adjusted image data to a pixel electrode of the pixel.

公开(公告)号：US10573236B1

公开(公告)日：2020-02-25

申请号：US16283473

申请日：2019-02-22

Applicant: Apple Inc.

Inventor： Shengkui Gao ,  Graeme M. Williams ,  Haifeng Li ,  Mohammad Ali Jangda ,  Paolo Sacchetto ,  Pierre-Yves Emelie ,  Shyuan Yang ,  Sinan Alousi ,  Tsung-Ting Tsai ,  Warren S. Rieutort-Louis ,  Weijun Yao ,  Yafei Bi ,  Yue Jack Chu

IPC: G09G3/3233 ,  G09G3/20 ,  G09G3/3266

Abstract: A display may have an array of pixels. Due to the presence of a notch in the display, the display may have some rows that are shorter than other rows in the display, and accordingly different gate line loading. To account for the gate line loading variations, the display driver circuitry may have gate driver circuits that provide different gate line signals to different rows of pixels within the display. In other arrangement, luminance adjustment circuitry may receive image data and generate corresponding compensated image data to account for gate line loading variations between rows of pixels in the display. The image data may be compensated based on the location of the pixel, the gray level of the image data, the display brightness, and/or temperature.

公开(公告)号：US10319279B2

公开(公告)日：2019-06-11

申请号：US15438448

申请日：2017-02-21

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Paolo Sacchetto ,  Sheng Zhang ,  Yang Li ,  Myung-Je Cho ,  Marc Albrecht

IPC: G09G3/20

Abstract: This application relates to performing certain dithering processes to eliminate display artifacts such as flicker, which can be caused by charge accumulation at the display. The dither process can be performed by a display controller that uses a group lookup method for identifying groups of dithering patterns that can be combined to expand a number of color values available to the display. The dither process can also be performed as a temporal process that incorporates groups of dithering patterns into frames and shifts a spatial arrangement of the groups of dithering patterns over a sequence of frames. Additionally, the dither process can incorporate counters that count the number of times a particular spatial arrangement of dithering patterns has been used in a sequence of frames in order that each spatial arrangement of dithering patterns will share an average count with other spatial arrangements over a sequence of frames.

公开(公告)号：US20180349244A1

公开(公告)日：2018-12-06

申请号：US15900740

申请日：2018-02-20

Applicant: Apple Inc.

Inventor： Abhinav Pathak ,  Conor J. O'Reilly ,  Shashi K. Dua ,  Udaykumar R. Raval ,  Christopher W. Chaney ,  Amit K. Vyas ,  Albert S. Liu ,  Roberto Alvarez ,  Rohit Mundra ,  Vladislav Sahnovich ,  Patrick Y. Law ,  Paul M. Thompson ,  Paolo Sacchetto ,  Chaohao Wang ,  Arthur L. Spence ,  Jean-Pierre Simon Guillou ,  Mohammad Ali Jangda ,  Christopher Edward Glazowski ,  Yifan Zhang ,  Prajakta S. Karandikar ,  Han Ming Ong

IPC: G06F11/30 ,  H04L29/08 ,  G09G3/32 ,  G06F11/32 ,  G06F11/34

Abstract: Circuits, methods, and apparatus that may estimate the power being consumed by an OLED display screen of an electronic device, may provide further information about that power usage, may modify or change functions performed by the electronic device based on that power usage, and may inform an application's developer about the amount of power being used by the electronic device while the electronic device is running the application. One example may estimate the power being used by an OLED display screen of an electronic device by determining the content of images being displayed during a duration. The estimated power may then be presented to a user. The estimated power may be used in decisions to modify or change parameters of the screen or other device components.

公开(公告)号：US10043472B2

公开(公告)日：2018-08-07

申请号：US14976853

申请日：2015-12-21

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Paolo Sacchetto ,  Howard H. Tang

IPC: G09G3/36

CPC classification number: G09G3/3655 ,  G09G3/2011 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2300/0426 ,  G09G2300/043 ,  G09G2300/0465 ,  G09G2310/0281 ,  G09G2310/08 ,  G09G2320/0209

Abstract: A display device may include a source line that provides a data line signal to a pixel of the display device, a gate line that provides a gate signal to a switches associated with the pixel, and a voltage gate line disposed parallel to the source line and coupled to the gate line at a cross point node. The display device may also include a driver circuit that receives a pixel value to provide to the pixel, determines a compensation amount for the pixel value based on an expected kickback voltage present on the pixel due to a coupling effect between the source line and the voltage gate line, generates a compensated data line signal based on the compensation value and the pixel value, and provides the compensated data line signal to the pixel via the source line.