公开(公告)号：US20210305350A1

公开(公告)日：2021-09-30

申请号：US17145815

申请日：2021-01-11

Applicant: Apple Inc.

Inventor： Warren S. Rieutort-Louis ,  Abbas Jamshidi Roudbari ,  Yuchi Che ,  Tsung-Ting Tsai ,  Jiun-Jye Chang ,  Shih Chang Chang ,  Ting-Kuo Chang

IPC: H01L27/32 ,  G06F3/041 ,  G09G3/3225

Abstract: An electronic device may include a display having display pixels formed in an active area of the display. The display further includes display driver circuitry for driving gate lines that are routed across the display. A hole such as a through hole, optical window, or other inactive region may be formed within the active area of the display. Multiple gate lines carrying the same signal may be merged together prior to being routed around the hole to help minimize the routing line congestion around the border of the hole. Dummy circuits may be coupled to the merged segment portion to help increase the parasitic loading on the merged segments. The hole may have a tapered shape to help maximize the size of the active area. The hole may have an asymmetric shape to accommodate multiple sub-display sensor components.

公开(公告)号：US20210035499A1

公开(公告)日：2021-02-04

申请号：US16828052

申请日：2020-03-24

Applicant: Apple Inc.

Inventor： Chuang Qian ,  Tsung-Ting Tsai ,  Shyuan Yang ,  Cheng-Chih Hsieh ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang ,  Shih-Chang Chang

IPC: G09G3/3233 ,  G09G3/3266 ,  G11C19/28 ,  G09G3/3275

Abstract: Electronic devices may include displays having organic light-emitting diode pixels, display driver circuitry, and gate driver circuitry. To reduce the amount of space occupied in the inactive area of a display by the gate driver circuitry, one or more of the shift registers in the gate driver circuitry may include register circuits that are shared by multiple rows of pixels. Different drivers may use different clock frequencies to ensure synchronous operation of the display even when some register circuits share pixel rows. For increased flexibility in the arrangement of the register circuits in the shift registers, one or more of the shift registers may be split across the active area of the display. In some cases, one of the emission drivers may be omitted from the gate driver circuitry and a single emission driver may provide multiple emission control signals for the pixels.

公开(公告)号：US10852876B2

公开(公告)日：2020-12-01

申请号：US15313942

申请日：2014-09-23

Applicant: Apple Inc.

Inventor： Abbas Jamshidi-Roudbari ,  Cheng-Ho Yu ,  Shih-Chang Chang ,  Ting-Kuo Chang

IPC: G06F3/045 ,  G06F3/041 ,  G06F3/044

Abstract: A touch screen is disclosed that includes conductive elements in a display area and connecting traces for routing the conductive elements to other locations. The connecting traces can be routed underneath or over existing opaque structures in the display area, instead of in border areas adjacent to the display area, to minimize the effect of the connecting traces on the display aperture ratio. The lengths and/or widths of these connecting traces as well as the number of parallel connecting traces used to connect to a particular element can be selected to balance the load on the drive and/or sense circuitry and on display pixels caused by the connecting traces.

公开(公告)号：US10809847B2

公开(公告)日：2020-10-20

申请号：US16030654

申请日：2018-07-09

Applicant: Apple Inc.

Inventor： Vasudha Gupta ,  Shih Chang Chang ,  Young-Bae Park ,  Ting-Kuo Chang

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3208 ,  G09G3/3233 ,  G09G3/34 ,  H01L27/32

Abstract: A touch screen having touch circuitry integrated into a display pixel stackup. The touch screen can include a transistor layer, an LED layer and a first layer. The first layer can operate as an LED cathode during a display phase and as touch circuitry during a touch sensing phase. The transistor layer can be at least partially utilized for transitioning between the display phase and the touch sensing phase. The touch screen can be fabricated to reduce or eliminate damage to the LED layer.

公开(公告)号：US10741121B2

公开(公告)日：2020-08-11

申请号：US16379323

申请日：2019-04-09

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：US20200098314A1

公开(公告)日：2020-03-26

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: G09G3/3225 ,  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：US10546540B1

公开(公告)日：2020-01-28

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：US10304378B2

公开(公告)日：2019-05-28

申请号：US15996366

申请日：2018-06-01

Applicant: Apple Inc.

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

IPC: G09G3/32 ,  G09G3/3225

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：US20190148465A1

公开(公告)日：2019-05-16

申请号：US16224607

申请日：2018-12-18

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 ,  G09G3/3266 ,  G06F3/044 ,  G09G3/3233

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：US20180224996A1

公开(公告)日：2018-08-09

申请号：US15662003

申请日：2017-07-27

Applicant: Apple Inc.

Inventor： Mohammad Reza Esmaeili Rad ,  Shinya Ono ,  Ting-Kuo Chang

IPC: G06F3/041 ,  G06F3/046 ,  G06F3/045 ,  H01L27/32 ,  H01L51/52 ,  H01L51/00 ,  H01L51/56 ,  G01B7/16

CPC classification number: G06F3/0416 ,  G01B7/18 ,  G06F3/041 ,  G06F3/045 ,  G06F3/046 ,  G06F2203/04102 ,  H01L27/323 ,  H01L27/3276 ,  H01L51/0096 ,  H01L51/5209 ,  H01L51/5225 ,  H01L51/56 ,  H01L2227/323

Abstract: A force input sensor can include a strain-sensitive region disposed as a meandering electrical trace onto a structural or functional layer of a display stack. In particular, the meandering electrical trace can include one or more diversions from a linear path, each diversion configured to increase the length of the electrical trace. A diversion can form a loop to increase the inductance of the meandering electrical trace; the inductance of the meandering electrical trace can be correlated to length of the inductive trace which, in turn, can be correlated to strain experienced by the structural or functional layer.