公开(公告)号：US10474860B2

公开(公告)日：2019-11-12

申请号：US15720827

申请日：2017-09-29

Applicant: Apple Inc.

Inventor： Mohammad Yeke Yazdandoost ,  Yafei Bi ,  Kingsuk Brahma ,  Giovanni Gozzini ,  Mohammad Jangda

IPC: G06K9/00 ,  G06K17/00 ,  G06K19/077 ,  G06K9/20

Abstract: An electronic device may include a display and a biometric image sensor configured for biometric image sensing. The electronic device may also include a display driver coupled to the display. The display driver may include first and second memories and a processor configured to alternatingly read respective illumination pattern data from the first and second memories to drive the display during biometric image sensing.

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：US10269278B2

公开(公告)日：2019-04-23

申请号：US15694373

申请日：2017-09-01

Applicant: Apple Inc.

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

IPC: G09G3/00 ,  G09G3/20 ,  G06F3/041 ,  G09G3/3225

Abstract: Electronic displays, systems, and methods that perform display panel sensing are provided. An electronic device may include processing circuitry that generates image data based at least in part on display panel sensing feedback and an electronic display. The electronic display may display the image data on pixels coupled to one of several sense lines. There may be an odd number of sense lines with common electrical characteristics. The electronic display may obtain display panel sense feedback at least in part by differentially sensing each one of the sense lines with sense lines with common electrical characteristics with another one of the sense lines the common electrical characteristics.

公开(公告)号：US20190096300A1

公开(公告)日：2019-03-28

申请号：US15717755

申请日：2017-09-27

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Jie Won Ryu ,  Kingsuk Brahma ,  Hyunwoo Nho ,  Baris Cagdaser ,  Junhua Tan ,  Sun-Il Chang ,  Luigi Panseri ,  Injae Hwang ,  Jesse A. Richmond ,  Toshiaki Sawada ,  Hyuck-Jae Lee

IPC: G09G3/00

Abstract: An electronic device includes a display having a number of pixels, source driving circuitry that drives data to the pixels, and data lines that communicatively couple the source driving circuitry with the pixels. The electronic device also includes quality monitoring and calibration circuitry that identifies degradation in the source driving circuitry, one or more of the data lines, or both. The electronic device may be controlled based at least in part upon identification of the degradation.

公开(公告)号：US20180336823A1

公开(公告)日：2018-11-22

申请号：US16049462

申请日：2018-07-30

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Hyunwoo Nho ,  Chaohao Wang ,  Jie Won Ryu ,  Kingsuk Brahma ,  Shiping Shen ,  Shengkui Gao ,  Hyunsoo Kim ,  Sun-Il Chang ,  Junhua Tan ,  Injae Hwang ,  Myungjoon Choi

IPC: G09G3/3233 ,  G09G3/3258 ,  G09G3/34

CPC classification number: G09G3/3233 ,  G09G3/3258 ,  G09G3/3406 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/041 ,  G09G2320/0626 ,  G09G2360/144

Abstract: A method for operating an electronic display includes displaying image frames and receiving operational parameters of the electronic display based on illuminating a sense pixel of at least one row of pixels of the electronic display when displaying the image frames. A first set of pixels below the at least one row of pixels renders a portion of a first image frame and a second set of pixels above the at least one row of pixels renders a portion of a second image frame. The method also includes adjusting image display of a third image frame on the electronic display based on the operational parameters.

公开(公告)号：US09952265B2

公开(公告)日：2018-04-24

申请号：US14993711

申请日：2016-01-12

Applicant: Apple Inc.

Inventor： Kingsuk Brahma ,  David A. Stronks ,  Hopil Bae ,  Wei H. Yao

IPC: G01R27/20 ,  G09G3/20 ,  G09G3/36 ,  G09G3/00

CPC classification number: G01R27/205 ,  G09G3/006 ,  G09G3/2092 ,  G09G3/2096 ,  G09G3/3607 ,  G09G3/3696 ,  G09G2300/0426 ,  G09G2310/08 ,  G09G2320/0223

Abstract: A display may have a substrate layer to which a display driver integrated circuit and flexible printed circuit are bonded. The display driver integrated circuit may be provided with switches and control circuitry for controlling the operation of the switches during bond resistance measurements. Test equipment may apply currents to pads in the display driver integrated circuit through contacts in the flexible printed circuit while controlling the switching circuitry. Based on these measurements and the measurement of trace resistances in a dummy flexible printed circuit, the test equipment may determine bond resistances for bonds between the display driver integrated circuit and the display substrate and between the flexible printed circuit and the display substrate. Displays may have master and slave display driver integrated circuits that share coarse reference voltages produced by the master from raw power supply voltages.

公开(公告)号：US09952264B2

公开(公告)日：2018-04-24

申请号：US14993702

申请日：2016-01-12

Applicant: Apple Inc.

Inventor： Kingsuk Brahma ,  David A. Stronks ,  Hopil Bae ,  Wei H. Yao

IPC: G09G3/36 ,  G01R27/20 ,  G09G3/20 ,  G09G3/00

CPC classification number: G01R27/205 ,  G09G3/006 ,  G09G3/2092 ,  G09G3/2096 ,  G09G3/3607 ,  G09G3/3696 ,  G09G2300/0426 ,  G09G2310/08 ,  G09G2320/0223

Abstract: A display may have a substrate layer to which a display driver integrated circuit and flexible printed circuit are bonded. The display driver integrated circuit may be provided with switches and control circuitry for controlling the operation of the switches during bond resistance measurements. Test equipment may apply currents to pads in the display driver integrated circuit through contacts in the flexible printed circuit while controlling the switching circuitry. Based on these measurements and the measurement of trace resistances in a dummy flexible printed circuit, the test equipment may determine bond resistances for bonds between the display driver integrated circuit and the display substrate and between the flexible printed circuit and the display substrate. Displays may have master and slave display driver integrated circuits that share coarse reference voltages produced by the master from raw power supply voltages.

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.

公开(公告)号：US20170351368A1

公开(公告)日：2017-12-07

申请号：US15669869

申请日：2017-08-04

Applicant: Apple Inc.

Inventor： Manu Agarwal ,  Erno H. Klaassen ,  Hopil Bae ,  Kingsuk Brahma

IPC: G06F3/041 ,  G02B5/20

CPC classification number: G06F3/0412 ,  G01R31/001 ,  G02B5/201 ,  G02F1/13306 ,  G02F1/13338 ,  G02F2001/133334 ,  G06F3/00 ,  G06F3/0414 ,  G06F3/0418

Abstract: A sensing device can be included in a display of an electronic device. Various techniques can be used to reduce display noise in the signals output from the sensing device. The techniques include the use of a filtering layer in a display stack, the use of a non-uniform sampling scheme, averaging together noise signal samples sampled over multiple display frames, and inverting a phase of the sampling of the noise signal over multiple display frames.