公开(公告)号：US11762490B1

公开(公告)日：2023-09-19

申请号：US17407702

申请日：2021-08-20

Applicant: Apple Inc.

Inventor： Kyounghwan Kim ,  Abbas Jamshidi Roudbari ,  Chia-Hsiang Chen ,  Chien-Ya Lee ,  Ching-Sang Chuang ,  Jae Won Choi ,  Jonathan H. Beck ,  Ming E. Tai ,  Warren S. Rieutort-Louis ,  Wen-I Hsieh ,  Yuchi Che

IPC: G06F3/044 ,  G06F3/041 ,  H10K59/40 ,  H10K59/50

CPC classification number: G06F3/0412 ,  H10K59/40 ,  H10K59/50 ,  G06F3/044

Abstract: An electronic device may have a display with an active area configured to display images and an inactive area that is free of pixels and that does not display images. Touch sensor sense lines may have portions located in the active area and portions located in the inactive area. The active and inactive areas may be characterized by respective reflectivity values. To match the reflectivities of the active and inactive areas and thereby avoid undesired visually distinguishable differences in the appearances of these areas, the touch sensor circuitry in the inactive areas may be configured to match the reflectivity values of the active and inactive areas. Sense line portions in the inactive area may have metal traces of enhanced reflectivity and/or uneven surface topology to enhance ambient light reflections through a circular polarizer that overlaps the active and inactive areas.

公开(公告)号：US11741904B2

公开(公告)日：2023-08-29

申请号：US17206425

申请日：2021-03-19

Applicant: Apple Inc.

Inventor： Ting-Kuo Chang ,  Abbas Jamshidi Roudbari ,  Tsung-Ting Tsai ,  Warren S. Rieutort-Louis ,  Shinya Ono ,  Shin-Hung Yeh ,  Chien-Ya Lee ,  Shyuan Yang

IPC: G09G3/3275 ,  G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3275 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2310/021 ,  G09G2310/0297 ,  G09G2310/08

Abstract: A display may have rows and columns of pixels. Gate lines may be used to supply gate signals to rows of the pixels. Data lines may be used to supply data signals to columns of the pixels. The data lines may include alternating even and odd data lines. Data lines may be organized in pairs each of which includes one of the odd data lines and an adjacent one of the even data lines. Demultiplexer circuitry may be configured dynamically during data loading and pixel sensing operations. During data loading, data from display driver circuitry may be supplied, alternately to odd pairs of the data lines and even pairs of the data lines. During sensing, the demultiplexer circuitry may couple a pair of the even data lines to sensing circuitry in the display driver circuitry and then may couple a pair of the odd data lines to the sensing circuitry.

公开(公告)号：US20230221606A1

公开(公告)日：2023-07-13

申请号：US18182222

申请日：2023-03-10

Applicant: Apple Inc.

Inventor： Shin-Hung Yeh ,  Warren S. Rieutort-Louis ,  Abbas Jamshidi Roudbari ,  Chien-Ya Lee ,  Lun Tsai

IPC: G02F1/1362 ,  G09G3/20

CPC classification number: G02F1/136286 ,  G09G3/20 ,  H10K59/131 ,  H10K59/122 ,  G02F1/13629 ,  G09G2300/0404 ,  G09G2300/0426

Abstract: To minimize the width of a non-light-emitting border region around an opening in the active area, data lines may be stacked in the border region. Data line portions may be formed using three metal layers in three different planes within the border region. A metal layer that forms a positive power signal distribution path in the active area may serve as a data line portion in the border region. A metal layer may be added in the border region to serve as a data line portion in the border region. Data line signals may also be provided to pixels on both sides of an opening in the active area using supplemental data line paths. A supplemental data line path may be routed through the active area of the display to electrically connect data line segments on opposing sides of an opening within the display.

公开(公告)号：US11495176B1

公开(公告)日：2022-11-08

申请号：US17203356

申请日：2021-03-16

Applicant: Apple Inc.

Inventor： Cheng-Chih Hsieh ,  Abbas Jamshidi Roudbari ,  Shih Chang Chang ,  Shyuan Yang ,  Ting-Kuo Chang ,  Tsung-Ting Tsai ,  Warren S. Rieutort-Louis

IPC: G09G3/3266 ,  G09G3/3233

Abstract: An electronic device may include a display and a sensor under the display. The display may include pixels having emission transistors that are controlled by emission signals. The emission signals are controlled using a pulse width modulation (PWM) scheme to control the brightness of the display. The emission signals may further include a localized sensor blackout pulse configured to generate a localized sensor blackout region that overlaps with the sensor to reduce any undesired back emission of light emitted from the display. The sensor blackout pulse may be automatically generated periodically or generated in an on-demand basis once per frame, multiple times per frame time, or once every multiple frames. Any luminance degradation caused by the sensor blackout pulse may be compensated by boosting the luminance and/or by extending the duration of each emission on pulse.

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：US11049445B2

公开(公告)日：2021-06-29

申请号：US15975390

申请日：2018-05-09

Applicant: Apple Inc.

Inventor： Warren S. Rieutort-Louis ,  Shyuan Yang ,  Tsung-Ting Tsai ,  Cheng-Ho Yu ,  Jae Won Choi ,  Bhadrinarayana Lalgudi Visweswaran ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang

IPC: G09G3/3216 ,  H01L27/32 ,  G09G3/3266 ,  G09G3/3283 ,  G09G3/3275 ,  G09G3/3225 ,  H01L51/52

Abstract: A display may have rows and columns of pixels that form an active area for displaying images. A display driver integrated circuit may provide multiplexed data signals to demultiplexer circuitry in the display. The demultiplexer circuitry may demultiplex the data signals and provide the demultiplexed data signals to the pixels on data lines. Gate lines may control the loading of the data signals into the pixels. The display may have a length dimension and a width dimension that is shorter than the length dimension. The data lines may extend parallel to the width dimension and the gate lines may extend parallel to the length dimension such that there are more data lines than gate lines in the display. A notch that is free of pixels may extend into the active area. Data lines extending parallel to the width dimension of the display may be routed around the notch.

公开(公告)号：US10984727B2

公开(公告)日：2021-04-20

申请号：US16120076

申请日：2018-08-31

Applicant: Apple Inc.

Inventor： Ting-Kuo Chang ,  Abbas Jamshidi Roudbari ,  Tsung-Ting Tsai ,  Warren S. Rieutort-Louis ,  Shinya Ono ,  Shin-Hung Yeh ,  Chien-Ya Lee ,  Shyuan Yang

IPC: G09G3/3275 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/20

Abstract: A display may have rows and columns of pixels. Gate lines may be used to supply gate signals to rows of the pixels. Data lines may be used to supply data signals to columns of the pixels. The data lines may include alternating even and odd data lines. Data lines may be organized in pairs each of which includes one of the odd data lines and an adjacent one of the even data lines. Demultiplexer circuitry may be configured dynamically during data loading and pixel sensing operations. During data loading, data from display driver circuitry may be supplied, alternately to odd pairs of the data lines and even pairs of the data lines. During sensing, the demultiplexer circuitry may couple a pair of the even data lines to sensing circuitry in the display driver circuitry and then may couple a pair of the odd data lines to the sensing circuitry.

公开(公告)号：US10971074B2

公开(公告)日：2021-04-06

申请号：US16712050

申请日：2019-12-12

Applicant: Apple Inc.

Inventor： Keitaro Yamashita ,  Abbas Jamshidi Roudbari ,  Shin-Hung Yeh ,  Tsung-Ting Tsai ,  Shih-Chang Chang ,  Ting-Kuo Chang ,  Ki Yeol Byun ,  Warren S. Rieutort-Louis

IPC: G09G3/3266

Abstract: An electronic device may include a display such as a light-emitting diode display. The electronic device may be a head-mounted device that provides a virtual reality or augmented reality environment to a user. To reduce artifacts in the display, a display may be operable in both a normal scanning mode and a partial scanning mode. In the normal scanning mode, every row of the display may be enabled to emit light in each frame. In the partial scanning mode, only a subset of the rows of the display may be enabled to emit light in each frame. The display may have a higher refresh rate in the partial scanning mode than in the normal scanning mode. To ensure uniform transistor stress across the display, the scanning driver for the display may scan the disabled rows in the partial scanning mode even though the rows will not be used to emit light.

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：US10797125B2

公开(公告)日：2020-10-06

申请号：US15985485

申请日：2018-05-21

Applicant: Apple Inc.

Inventor： Cheng-Ho Yu ,  Abbas Jamshidi Roudbari ,  Shin-Hung Yeh ,  Sungki Lee ,  Ting-Kuo Chang ,  Yu Cheng Chen

IPC: H01L27/32 ,  G09G3/3225 ,  H01L51/52 ,  G09G3/20

Abstract: A display may have display driver circuitry. Signal routing lines may supply multiplexed signals from the display driver circuitry to demultiplexer circuitry. The demultiplexer circuitry may provide corresponding demultiplexed signals to the pixels over signal routing lines. The demultiplexer circuitry may have demultiplexer circuit blocks such as 1:N demultiplexer circuit blocks. Each of the demultiplexer circuit blocks may have the same area and layout. The demultiplexer circuit blocks may run across the width of the display. A first portion of the demultiplexer circuit blocks may extend in a straight line parallel to an edge of the active area. A second portion of the demultiplexer circuit blocks may be arranged in a staircase pattern that angles away from the first portion of demultiplexer circuit blocks.