公开(公告)号：US10755618B2

公开(公告)日：2020-08-25

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-Il 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：US10565923B2

公开(公告)日：2020-02-18

申请号：US15700971

申请日：2017-09-11

Applicant: Apple Inc.

Inventor： Shiping Shen ,  Derek K. Shaeffer ,  Baris Cagdaser ,  Hyunwoo Nho ,  Kingsuk Brahma ,  Hung Sheng Lin ,  Injae Hwang ,  Jie Won Ryu ,  Hyunsoo Kim ,  Junhua Tan ,  Rui Zhang ,  Shengkui Gao ,  Mohammad B Vahid Far ,  Jesse A. Richmond ,  Sun-Il Chang

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

Abstract: Electronic devices and methods for compensating for noise in a display that includes sensing a current in a sensing channel of the display. Compensating for the noise also includes sensing an observation current from noise in an observation channel of the display and scaling the observation current to generate a scaled observation current. The scaled observation current is subtracted from the sense current to generate a compensated output. The compensated output is used to drive compensation operations of the display based at least in part on the compensated output to reduce effects of the noise.

公开(公告)号：US20190088204A1

公开(公告)日：2019-03-21

申请号：US16132322

申请日：2018-09-14

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

Abstract: A mobile 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 mobile 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 current-voltage relationship of the pixel and a reference current-voltage relationship of the reference pixel.

公开(公告)号：US10200059B2

公开(公告)日：2019-02-05

申请号：US15697233

申请日：2017-09-06

Applicant: Apple Inc.

Inventor： Baris Cagdaser ,  Derek K. Shaeffer ,  Hopil Bae ,  Jesse Aaron Richmond ,  Jie Won Ryu ,  Kingsuk Brahma ,  Mohammad B. Vahid Far ,  Shingo Hatanaka ,  Yafei Bi ,  Yuichi Okuda

IPC: H03M1/78 ,  H03M1/76 ,  H03M1/74 ,  H03M1/68

Abstract: A device includes a resistor string that includes a plurality resistors with voltage taps disposed therebetween. The device may select one particular voltage tap of the plurality of voltage taps based on received gray level data for a pixel of a display. The device also includes a first amplifier that may be coupled to a first terminal end of the resistor string. The device additionally includes a second amplifier that may be coupled to a second terminal end of the resistor string, wherein the plurality of voltage taps may each supply a tap voltage derived from a voltage between the first amplifier and the second amplifier, wherein any tap amplifier of the device coupled to a voltage tap of the plurality of voltage taps provides a reference voltage thereto.

公开(公告)号：US12080201B2

公开(公告)日：2024-09-03

申请号：US18468654

申请日：2023-09-15

Applicant: Apple Inc.

Inventor： Christian M. Sauer ,  Christoph H. Krah ,  Derek K. Shaeffer ,  Hasan Akyol ,  Henry C. Jen ,  John T. Wetherell

IPC: G06F3/044 ,  G06F3/041 ,  G09G3/32 ,  H01L27/15

CPC classification number: G09G3/32 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044 ,  H01L27/156 ,  G09G2354/00

Abstract: An integrated touchscreen can include light emitting diodes or organic light emitting diodes (LEDs/OLEDs), display chiplets and touch chiplets disposed in a visible area of the integrated touch screen. For example, the LEDs/OLEDs, display chiplets and touch chiplets can be placed on a substrate by a micro-transfer tool. The integrated touchscreen can also include electrodes disposed in the visible area of the integrated touch screen. The electrodes can be capable of providing display functionality via the one or more display chiplets during display operation (e.g., operating as cathode terminals of the LEDs during the display operation) and capable of providing touch functionality via the touch chiplets during touch operation (e.g., touch node electrodes can be formed from groups of the electrodes and sensed). In some examples, the touch node electrodes can be formed and coupled to touch chiplets via the display chiplets.

公开(公告)号：US20230316998A1

公开(公告)日：2023-10-05

申请号：US18295619

申请日：2023-04-04

Applicant: Apple Inc.

Inventor： Derek K. Shaeffer ,  Mahdi Farrokh Baroughi ,  Xiaofeng Wang ,  Sam S. Li ,  John T. Wetherell ,  Henry C. Jen ,  Xiang Lu ,  Hasan Akyol ,  Hopil Bae ,  Xiang Fang ,  Hjalmar Edzer Ayco Huitema ,  Tore Nauta

IPC: G09G3/3216 ,  G09G3/20 ,  H05B45/20 ,  H10K59/17

CPC classification number: G09G3/3216 ,  G09G3/2003 ,  H05B45/20 ,  H10K59/17 ,  G09G2310/0264 ,  G09G2310/0243

Abstract: Local passive matrix displays and methods of operation are described. In an embodiment, the display includes a pixel driver chip coupled with a matrix of rows and columns of LEDs. The pixel driver chips may be arranged in rows across the display with separate portions to operate separate matrices of LEDs.

公开(公告)号：US11775095B2

公开(公告)日：2023-10-03

申请号：US17384415

申请日：2021-07-23

Applicant: Apple Inc.

Inventor： Christian M. Sauer ,  Christoph H. Krah ,  Derek K. Shaeffer ,  Hasan Akyol ,  Henry C. Jen ,  John T. Wetherell ,  Thierry S. Divel

IPC: G06F3/044 ,  G06F3/041 ,  G09G3/32 ,  H01L27/15

CPC classification number: G06F3/0412 ,  G06F3/044 ,  G06F3/0418 ,  G09G3/32 ,  H01L27/156

Abstract: An integrated touchscreen can include light emitting diodes or organic light emitting diodes (LEDs/OLEDs), display chiplets and touch chiplets disposed in a visible area of the integrated touch screen. For example, the LEDs/OLEDs, display chiplets and touch chiplets can be placed on a substrate by a micro-transfer tool. The integrated touchscreen can also include electrodes disposed in the visible area of the integrated touch screen. The electrodes can be capable of providing display functionality via the one or more display chiplets during display operation (e.g., operating as cathode terminals of the LEDs during the display operation) and capable of providing touch functionality via the touch chiplets during touch operation (e.g., touch node electrodes can be formed from groups of the electrodes and sensed). In some examples, the touch node electrodes can be formed and coupled to touch chiplets via the display chiplets.

公开(公告)号：US11004391B2

公开(公告)日：2021-05-11

申请号：US16869329

申请日：2020-05-07

Applicant: Apple Inc.

Inventor： Hei Kam ,  Junhua Tan ,  Wei H. Yao ,  Shihchang Chang ,  Derek K. Shaeffer ,  Chaohao Wang ,  Hyunwoo Nho ,  Yun Wang ,  Baris Cagdaser ,  Majid Gharghi ,  Yongjun Li ,  Aida Raquel Colon-Berrios ,  Mohammad Reza Esmaeili Rad ,  Hyunsoo Kim ,  Alex H. Pai ,  Hsin-Ying Chiu ,  Jiun-Jye Chang ,  Ching-Sang Chuang ,  Xin Lin

IPC: G09G3/32 ,  G09G3/3233 ,  G09G3/36 ,  G09G3/3291

Abstract: An electronic device includes an electronic display having an active area comprising a pixel. The electronic device also includes processing circuitry configured to receive image data and predict a change in threshold voltage associated with a transistor of the pixel based at least in part on the image data. Furthermore, the processing circuitry is configured to adjust the image data to generate adjusted image data based at least in part on the predicted change in threshold voltage.

公开(公告)号：US10885852B2

公开(公告)日：2021-01-05

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：US10854129B2

公开(公告)日：2020-12-01

申请号：US16356914

申请日：2019-03-18

Applicant: Apple Inc.

Inventor： Xiang Lu ,  Mahdi Farrokh Baroughi ,  Xiaofeng Wang ,  Derek K. Shaeffer ,  Henry C. Jen ,  Hopil Bae

IPC: G06F3/038 ,  G09G3/20 ,  G09G3/3216 ,  G09G3/3275 ,  H01L27/32

Abstract: Hybrid architectures and method methods of operating a display panel are described. In an embodiment, row driver and pixel driver functions are combined in a group of backbone hybrid pixel driver chips, wherein global signal lines are distributed to the backbone hybrid pixel driver chips, where the global signals are manipulated and distributed to a row of pixel driver chips.