公开(公告)号：US20210050385A1

公开(公告)日：2021-02-18

申请号：US16945643

申请日：2020-07-31

Applicant: Apple Inc.

Inventor： Ching-Sang Chuang ,  Jiun-Jye Chang ,  Po-Chun Yeh ,  Shih Chang Chang ,  Ting-Kuo Chang ,  Yun Wang

IPC: H01L27/30 ,  H01L27/28 ,  H01L27/32 ,  H01L27/146 ,  H01L29/786 ,  H01L51/52 ,  H01L51/00 ,  G02F1/1333 ,  G02F1/1368 ,  G02F1/1343

Abstract: An electronic device includes a stack, and the stack includes a substrate, and a multi-layer structure deposited on the substrate and including a set of TFTs. The electronic device further includes a photodetector attached to the multi-layer structure and including an organic photosensitive material. The organic photosensitive material is electrically connected to a TFT in the set of TFTs. Another electronic device includes a stack, and the stack includes a substrate, and a multi-layer structure deposited on the substrate. The multi-layer structure includes a first set of layers including a set of TFTs, and a second set of layers including a PIN diode. The PIN diode is configured to operate as a photodetector and receive at least one wavelength of electromagnetic radiation, and is electrically connected to a TFT in the set of TFTs.

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.

公开(公告)号：US20200219945A1

公开(公告)日：2020-07-09

申请号：US16826521

申请日：2020-03-23

Applicant: Apple Inc.

Inventor： Cheng-Ho Yu ,  Chin-Wei Lin ,  Shyuan Yang ,  Ting-Kuo Chang ,  Tsung-Ting Tsai ,  Warren S. Rieutort-Louis ,  Shih-Chang Chang ,  Yu Cheng Chen ,  John Z. Zhong

IPC: H01L27/32 ,  G09G3/3233 ,  G09G3/3266 ,  G06F3/044

Abstract: A display may have an array of pixels. Display driver circuitry may supply data and control signals to the pixels. Each pixel may have seven transistors, a capacitor, and a light-emitting diode such as an organic light-emitting diode. The seven transistors may receive control signals using horizontal control lines. Each pixel may have first and second emission enable transistors that are coupled in series with a drive transistor and the light-emitting diode of that pixel. The first and second emission enable transistors may be coupled to a common control line or may be separately controlled so that on-bias stress can be effectively applied to the drive transistor. The display driver circuitry may have gate driver circuits that provide different gate line signals to different rows of pixels within the display. Different rows may also have different gate driver strengths and different supplemental gate line loading structures.

公开(公告)号：US20200013342A1

公开(公告)日：2020-01-09

申请号：US16577597

申请日：2019-09-20

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：US10482822B2

公开(公告)日：2019-11-19

申请号：US15384096

申请日：2016-12-19

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：US10224386B2

公开(公告)日：2019-03-05

申请号：US15370297

申请日：2016-12-06

Applicant: Apple Inc.

Inventor： Warren S. Rieutort-Louis ,  Ting-Kuo Chang ,  Chieh-Wei Chen ,  Cheng-Ho Yu

IPC: H01L29/04 ,  H01L29/10 ,  H01L31/00 ,  H01L27/32 ,  H01L51/52 ,  G09G3/3225

Abstract: An organic light-emitting diode display may have an array of pixels. The pixels may each have an organic light-emitting diode with a respective anode and may be formed from thin-film transistor circuitry formed on a substrate. A mesh-shaped path may be used to distribute a power supply voltage to the thin-film circuitry. The mesh-shaped path may have intersecting horizontally extending lines and vertically extending lines. The horizontally extending lines may be zigzag metal lines that do not overlap the anodes. The vertically extending lines may be straight vertical metal lines that overlap the anodes. The pixels may include pixels of different colors. Angularly dependent shifts in display color may be minimized by ensuring that the anodes of the differently colored pixels overlap the vertically extending lines by similar amounts.

公开(公告)号：US20190067407A1

公开(公告)日：2019-02-28

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

CPC classification number: H01L27/3276 ,  G09G3/2092 ,  G09G3/3225 ,  G09G2310/0297 ,  H01L27/323 ,  H01L51/5237

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.

公开(公告)号：US20190043418A1

公开(公告)日：2019-02-07

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 ,  G09G3/3283 ,  G09G3/3266 ,  H01L27/32

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：US10109240B2

公开(公告)日：2018-10-23

申请号：US15403070

申请日：2017-01-10

Applicant: Apple Inc.

Inventor： Shih Chang Chang ,  Keitaro Yamashita ,  Shin-Hung Yeh ,  Ting-Kuo Chang ,  Abbas Jamshidi Roudbari ,  Chin-Wei Lin

IPC: G09G3/3266 ,  G09G3/3291 ,  G09G5/18 ,  G06T19/00 ,  G09G3/36

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 scanned in each frame. In the partial scanning mode, only a subset of the rows of the display may be scanned in each frame. The display may have a higher refresh rate in the partial scanning mode than in the normal scanning mode. The gate driver circuitry may include a shift register that includes a plurality of register circuits. At least one register circuit may have a first input and a second input that is different than the first input.