公开(公告)号：US10923015B2

公开(公告)日：2021-02-16

申请号：US16335148

申请日：2017-09-20

Applicant: Apple Inc.

Inventor： Derek K. Shaeffer ,  Hopil Bae ,  Yafei Bi ,  Wei H. Yao ,  Xiaofeng Wang

IPC: G09G3/20 ,  G09G3/3225 ,  G06F1/06 ,  G09G3/3266

Abstract: A display device may include a plurality of pixels that may display image data on a display. The display device may also include a circuit that may receive pixel data including a gray level for at least one pixel of the plurality of pixels. The circuit may then receive an emission clock signal using a clock circuit based on the pixel data, such that the emission clock signal may cause the at least one pixel to receive a current for an amount of time based on the gray level. The circuit may then gate off the clock circuit after the amount of time.

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：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：US10573211B2

公开(公告)日：2020-02-25

申请号：US16361018

申请日：2019-03-21

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Shengkui Gao ,  Hyunwoo Nho ,  Chin-Wei Lin ,  Mohammad B. Vahid Far ,  Jie Won Ryu ,  Kingsuk Brahma ,  Junhua Tan ,  Sun-Il Chang ,  Shinya Ono ,  Jesse A. Richmond ,  Yafei Bi ,  Derek K. Shaeffer

IPC: G09G3/00

Abstract: Systems and methods are provided for differential sensing (DS), difference-differential sensing (DDS), correlated double sampling (CDS), and/or programmable capacitor matching to reduce display panel sensing noise. An electronic device may include one or more processors and an electronic display. The one or more processors may generate image data and adjust the image data based at least in part on display sensing feedback. The electronic display may employ sensing circuitry that obtains the display sensing feedback at least in part by applying test data to a pixel of a column of an active area of the display and differentially senses an electrical value of the pixel in comparison to a reference signal from a different column. This reference signal may provide a common mode noise reference, which is removed by the differential sensing and thereby enhances a quality of the sensed electrical value of the pixel.

公开(公告)号：US20190244555A1

公开(公告)日：2019-08-08

申请号：US16389899

申请日：2019-04-19

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Shengkui Gao ,  Hyunwoo Nho ,  Chin-Wei Lin ,  Mohammad B. Vahid Far ,  Jie Won Ryu ,  Kingsuk Brahma ,  Junhua Tan ,  Sun-II Chang ,  Shinya Ono ,  Jesse Aaron Richmond ,  Yafei Bi ,  Derek K. Shaeffer ,  Myungjoon Choi ,  Shiping Shen

IPC: G09G3/00

Abstract: Systems and methods are provided for differential sensing (DS), difference-differential sensing (DDS), correlated double sampling (CDS), correlated-correlated double sampling (CDS-CDS) and/or programmable capacitor matching to reduce display panel sensing noise. An electronic device may include one or more processors that generate image data according to sensing operations. The one or more processors may reference a sensing pattern as part of sensing operations. Applying test sensing signals based on the sensing pattern may help reduce error associated with sensing operations.

公开(公告)号：US20180082638A1

公开(公告)日：2018-03-22

申请号：US15697172

申请日：2017-09-06

Applicant: Apple Inc.

Inventor： Derek K. Shaeffer ,  Jesse A. Richmond ,  Kenichi Ueno ,  Kingsuk Brahma ,  Mohammad B. Vahid Far ,  Shingo Hatanaka ,  Yafei Bi

IPC: G09G3/3258 ,  G09G3/36 ,  G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/3258 ,  G09G3/2011 ,  G09G3/3233 ,  G09G3/3275 ,  G09G3/3688 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/0294 ,  G09G2310/0297 ,  G09G2310/08 ,  G09G2320/0276 ,  G09G2330/021 ,  G09G2330/028 ,  G09G2340/0435

Abstract: A display device may include a plurality of pixels that display image data on a display, a digital-to-analog converter that outputs a voltage that corresponds to a luminance value to be depicted on a first pixel, and a circuit that amplifies the voltage and outputs an amplified voltage to the first pixel. The circuit may include a capacitor that receives the voltage via the digital-to-analog converter and an amplifier coupled to the capacitor. The amplifier generates the amplified voltage based on the voltage stored the capacitor. The circuit also include switches that couple a first terminal of the capacitor to an output of the amplifier during a first amount of time and couples a second terminal of the capacitor to the output of the amplifier after the first amount of time expires.

公开(公告)号：US20180075798A1

公开(公告)日：2018-03-15

申请号：US15661995

申请日：2017-07-27

Applicant: Apple Inc.

Inventor： Hyunwoo Nho ,  Hung Sheng Lin ,  Jie Won Ryu ,  Junhua Tan ,  Sun-Il Chang ,  Shengkui Gao ,  Rui Zhang ,  Injae Hwang ,  Kingsuk Brahma ,  Jesse Aaron Richmond ,  Shiping Shen ,  Hyunsoo Kim ,  Sebastian Knitter ,  Lu Zhang ,  Nicolas P. Bonnier ,  Chih-Wei Yeh ,  Chaohao Wang ,  Paolo Sacchetto ,  Chin-Wei Lin ,  Mohammad B Vahid Far ,  Shinya Ono ,  Yafei Bi ,  Majid Gharghi ,  Kavinaath Murugan ,  Yun Wang ,  Derek K. Shaeffer ,  Baris Cagdaser ,  Tobias Jung ,  Marc Albrecht ,  Myung-Je Cho

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G3/3233 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/0626

Abstract: A mobile electronic device includes a display having a pixel and processing circuitry separate from but communicatively coupled to the display. The processing circuitry prepares image data to send to the pixel and adjusts the image data to compensate for operational variations of the display based on feedback received from the display that describes a present operational behavior of the pixel. The mobile electronic device also includes additional electronic components that affect the present operational behavior of the pixel depending on present operational behavior of the additional electronic components.