公开(公告)号：US20230284503A1

公开(公告)日：2023-09-07

申请号：US17842357

申请日：2022-06-16

Applicant: Apple Inc.

Inventor： Ricardo A Peterson ,  Abbas Jamshidi Roudbari ,  Ashray Vinayak Gogte ,  Christophe Blondin ,  Sebastian Knitter ,  Warren S Rieutort-Louis ,  Yuchi Che ,  Yurii Morozov ,  Matthew D Hollands ,  Chuang Qian ,  Michael H Lim ,  Matthew J Schwendeman ,  Kenny Kim ,  Tsung-Ting Tsai ,  Yue Qu

IPC: H01L27/32

CPC classification number: H01L27/323 ,  H01L27/3276 ,  H01L27/3216

Abstract: A display may have both a full pixel density region and a pixel removal region with a plurality of high-transmittance areas that overlap an optical sensor. Each high-transmittance area may be devoid of thin-film transistors and other display components. To improve transmission while maintaining satisfactory touch sensing performance, one or more segments of the touch sensor metal in the pixel removal region may have a reduced width relative to the touch sensor metal in the full pixel density region and/or one or more segments of the touch sensor metal in the pixel removal region may be omitted relative to the touch sensor metal in the full pixel density region. To mitigate a different appearance between the pixel removal region and the full pixel density region at off-axis viewing angles, the position of the touch sensor metal in the pixel removal region may be tuned.

公开(公告)号：US11751462B1

公开(公告)日：2023-09-05

申请号：US17842357

申请日：2022-06-16

Applicant: Apple Inc.

Inventor： Ricardo A Peterson ,  Abbas Jamshidi Roudbari ,  Ashray Vinayak Gogte ,  Christophe Blondin ,  Sebastian Knitter ,  Warren S Rieutort-Louis ,  Yuchi Che ,  Yurii Morozov ,  Matthew D Hollands ,  Chuang Qian ,  Michael H Lim ,  Matthew J Schwendeman ,  Kenny Kim ,  Tsung-Ting Tsai ,  Yue Qu

IPC: H10K59/40 ,  H10K59/131 ,  H10K59/35

CPC classification number: H10K59/40 ,  H10K59/131 ,  H10K59/352

Abstract: A display may have both a full pixel density region and a pixel removal region with a plurality of high-transmittance areas that overlap an optical sensor. Each high-transmittance area may be devoid of thin-film transistors and other display components. To improve transmission while maintaining satisfactory touch sensing performance, one or more segments of the touch sensor metal in the pixel removal region may have a reduced width relative to the touch sensor metal in the full pixel density region and/or one or more segments of the touch sensor metal in the pixel removal region may be omitted relative to the touch sensor metal in the full pixel density region. To mitigate a different appearance between the pixel removal region and the full pixel density region at off-axis viewing angles, the position of the touch sensor metal in the pixel removal region may be tuned.

公开(公告)号：US20220093059A1

公开(公告)日：2022-03-24

申请号：US17376125

申请日：2021-07-14

Applicant: Apple Inc.

Inventor： Maofeng Yang ,  Jiayi Jin ,  David A. Doyle ,  Yifan Zhang ,  Weijun Yao ,  Jiye Lee ,  Tae-Wook Koh ,  Mathew K. Mathai ,  Chuang Qian ,  Tsung-Ting Tsai ,  James P. Landry ,  Kiran S. Pillai ,  Injae Hwang ,  Yongjun Li

IPC: G09G5/10 ,  G09G3/20

Abstract: An electronic device may include an electronic display including display pixels to display an image based on compensated image data. The electronic display may also include a stressed reference pixel to exhibit burn-in related aging in response to one or more stress sessions and a non-stressed reference pixel configured to not undergo the one or more stress sessions. Additionally, the electronic device may include image processing circuitry to determine a panel-specific aging profile based on a comparison between one or more properties of the stressed reference pixel and the one or more properties of the non-stressed reference pixel. The image processing circuitry may also generate one or more gain maps based on the panel-specific aging profile and generate the compensated image data by applying the one or more gain maps to input image data.

公开(公告)号：US11257426B2

公开(公告)日：2022-02-22

申请号：US17080685

申请日：2020-10-26

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Shyuan Yang ,  Chuang Qian ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang

IPC: G06F3/00 ,  G09G3/3225 ,  G09G3/3233

Abstract: A display may have an array of organic light-emitting diode display pixels operating at a low refresh rate. Each display pixel may have six thin-film transistors and one capacitor. One of the six transistors may serve as the drive transistor and may be compensated using the remaining five transistors and the capacitor. One or more on-bias stress operations may be applied before threshold voltage sampling to mitigate first frame dimming. Multiple anode reset and on-bias stress operations may be inserted during vertical blanking periods to reduce flicker and maintain balance and may also be inserted between successive data refreshes to improve first frame performance. Two different emission signals controlling each pixel may be toggled together using a pulse width modulation scheme to help provide darker black levels.

公开(公告)号：US10854139B2

公开(公告)日：2020-12-01

申请号：US16696578

申请日：2019-11-26

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Shyuan Yang ,  Chuang Qian ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang

IPC: G09G3/32 ,  G09G3/3225 ,  G09G3/3233

Abstract: A display may have an array of organic light-emitting diode display pixels operating at a low refresh rate. Each display pixel may have six thin-film transistors and one capacitor. One of the six transistors may serve as the drive transistor and may be compensated using the remaining five transistors and the capacitor. One or more on-bias stress operations may be applied before threshold voltage sampling to mitigate first frame dimming. Multiple anode reset and on-bias stress operations may be inserted during vertical blanking periods to reduce flicker and maintain balance and may also be inserted between successive data refreshes to improve first frame performance. Two different emission signals controlling each pixel may be toggled together using a pulse width modulation scheme to help provide darker black levels.

公开(公告)号：US20220139315A1

公开(公告)日：2022-05-05

申请号：US17576619

申请日：2022-01-14

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Shyuan Yang ,  Chuang Qian ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang

IPC: G09G3/3225 ,  G09G3/3233

Abstract: A display may have an array of organic light-emitting diode display pixels operating at a low refresh rate. Each display pixel may have six thin-film transistors and one capacitor. One of the six transistors may serve as the drive transistor and may be compensated using the remaining five transistors and the capacitor. One or more on-bias stress operations may be applied before threshold voltage sampling to mitigate first frame dimming. Multiple anode reset and on-bias stress operations may be inserted during vertical blanking periods to reduce flicker and maintain balance and may also be inserted between successive data refreshes to improve first frame performance. Two different emission signals controlling each pixel may be toggled together using a pulse width modulation scheme to help provide darker black levels.

公开(公告)号：US20210043138A1

公开(公告)日：2021-02-11

申请号：US17080685

申请日：2020-10-26

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Shyuan Yang ,  Chuang Qian ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang

IPC: G09G3/3225 ,  G09G3/3233

Abstract: A display may have an array of organic light-emitting diode display pixels operating at a low refresh rate. Each display pixel may have six thin-film transistors and one capacitor. One of the six transistors may serve as the drive transistor and may be compensated using the remaining five transistors and the capacitor. One or more on-bias stress operations may be applied before threshold voltage sampling to mitigate first frame dimming. Multiple anode reset and on-bias stress operations may be inserted during vertical blanking periods to reduce flicker and maintain balance and may also be inserted between successive data refreshes to improve first frame performance. Two different emission signals controlling each pixel may be toggled together using a pulse width modulation scheme to help provide darker black levels.

公开(公告)号：US10902777B1

公开(公告)日：2021-01-26

申请号：US16505556

申请日：2019-07-08

Applicant: Apple Inc.

Inventor： Ruo-Gu Huang ,  Kyung Hoae Koo ,  Michael H. Lim ,  Chuang Qian ,  Weijun Yao ,  Yue Jack Chu

IPC: G09G3/3291 ,  G09G3/3233

Abstract: A display driver is disclosed that reduces first frame dimming and flicker in light-emitting diode pixels of a display device. The display driver may receive a display brightness value and determine a value of a dynamic supply voltage parameter based on the display brightness value. Over a first time interval, the display driver may apply a supply voltage that is based on the dynamic supply voltage parameter to one of a gate of a drive transistor of a light-emitting-diode circuit and a channel of the drive transistor. Over a second time interval, the display driver may apply a parking voltage to an anode of a light-emitting diode of the light-emitting-diode circuit and to the channel of the drive transistor. The value of the parking voltage may be below a threshold voltage of the light-emitting diode and correspond to the value of the dynamic supply voltage parameter.

公开(公告)号：US20240038159A1

公开(公告)日：2024-02-01

申请号：US18483282

申请日：2023-10-09

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Shyuan Yang ,  Chuang Qian ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang

IPC: G09G3/3225 ,  G09G3/3233

CPC classification number: G09G3/3225 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2310/061 ,  G09G2320/064 ,  G09G2320/0252 ,  G09G2320/0214 ,  G09G2320/0242 ,  G09G2320/0247 ,  G09G2300/0417 ,  G09G2300/043 ,  G09G2300/0861 ,  G09G2310/0262 ,  G09G2310/06 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2310/0297 ,  G09G2340/0435

Abstract: A display may have an array of organic light-emitting diode display pixels operating at a low refresh rate. Each display pixel may have six thin-film transistors and one capacitor. One of the six transistors may serve as the drive transistor and may be compensated using the remaining five transistors and the capacitor. One or more on-bias stress operations may be applied before threshold voltage sampling to mitigate first frame dimming. Multiple anode reset and on-bias stress operations may be inserted during vertical blanking periods to reduce flicker and maintain balance and may also be inserted between successive data refreshes to improve first frame performance. Two different emission signals controlling each pixel may be toggled together using a pulse width modulation scheme to help provide darker black levels.

公开(公告)号：US11688363B2

公开(公告)日：2023-06-27

申请号：US17376125

申请日：2021-07-14

Applicant: Apple Inc.

Inventor： Maofeng Yang ,  Jiayi Jin ,  David A. Doyle ,  Yifan Zhang ,  Weijun Yao ,  Jiye Lee ,  Tae-Wook Koh ,  Mathew K. Mathai ,  Chuang Qian ,  Tsung-Ting Tsai ,  James P. Landry ,  Kiran S. Pillai ,  Injae Hwang ,  Yongjun Li

IPC: G09G5/10 ,  G09G3/20

CPC classification number: G09G5/10 ,  G09G3/20 ,  G09G2320/046 ,  G09G2330/028 ,  G09G2360/145

Abstract: An electronic device may include an electronic display including display pixels to display an image based on compensated image data. The electronic display may also include a stressed reference pixel to exhibit burn-in related aging in response to one or more stress sessions and a non-stressed reference pixel configured to not undergo the one or more stress sessions. Additionally, the electronic device may include image processing circuitry to determine a panel-specific aging profile based on a comparison between one or more properties of the stressed reference pixel and the one or more properties of the non-stressed reference pixel. The image processing circuitry may also generate one or more gain maps based on the panel-specific aging profile and generate the compensated image data by applying the one or more gain maps to input image data.