公开(公告)号：US20230237965A1

公开(公告)日：2023-07-27

申请号：US18192905

申请日：2023-03-30

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Shinya Ono ,  Zino Lee ,  Yun Wang ,  Fan Gui

IPC: G09G3/3258 ,  H01L29/786 ,  H10K59/121

CPC classification number: G09G3/3258 ,  H01L29/7869 ,  H10K59/1213 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/043

Abstract: A display pixel is provided that is operable to support hybrid compensation scheme having both in-pixel threshold voltage canceling and external threshold voltage compensation. The display may include multiple p-type silicon transistors with at least one n-type semiconducting-oxide transistor and one storage capacitor. An on-bias stress phase may be performed prior to a threshold voltage sampling and data programming phase to mitigate hysteresis and improve first frame response. In low refresh rate displays, a first additional on-bias stress operation can be performed separate from the threshold voltage sampling and data programming phase during a refresh frame and a second additional on-bias stress operation can be performed during a vertical blanking frame. The display pixel may be configured to receive an initialization voltage and an anode reset voltage, either of which can be dynamically tuned to match the stress of the first and second additional on-bias stress operations to minimize flicker.

公开(公告)号：US20230081342A1

公开(公告)日：2023-03-16

申请号：US17859835

申请日：2022-07-07

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Aida R Colon-Berrios ,  Fan Gui ,  Levent Erdal Aygun ,  Mohammad Reza Esmaeili Rad ,  Ran Tu ,  Xin Lin ,  Yun Wang

IPC: G09G3/3233 ,  H01L27/32

Abstract: A display may include an array of pixels. Each pixel in the array may include a drive transistor, emission transistors, a data loading transistor, a gate voltage setting transistor, an initialization transistor, an anode reset transistor, a storage capacitor, and an optional current boosting capacitor coupled in series with an isolation transistor. A data refresh may include a initialization phase, a threshold voltage sampling phase, and a data programming phase. The threshold voltage sampling phase can be substantially longer than the data programming phase to decrease a current sampling level during the threshold voltage sampling phase, which helps reduce the display luminance sensitivity to temperature variations. During a data refresh, the isolation transistor can be turned on to provide current boosting. During emission periods, the isolation transistor is turned off to prevent cathode noise from potentially coupling through to one or more direct-current voltage nodes in the pixel.

公开(公告)号：US20220180812A1

公开(公告)日：2022-06-09

申请号：US17680059

申请日：2022-02-24

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Shinya Ono ,  Zino Lee ,  Yun Wang ,  Fan Gui

IPC: G09G3/3258 ,  H01L27/32 ,  H01L29/786

Abstract: A display pixel is provided that is operable to support hybrid compensation scheme having both in-pixel threshold voltage canceling and external threshold voltage compensation. The display may include multiple p-type silicon transistors with at least one n-type semiconducting-oxide transistor and one storage capacitor. An on-bias stress phase may be performed prior to a threshold voltage sampling and data programming phase to mitigate hysteresis and improve first frame response. In low refresh rate displays, a first additional on-bias stress operation can be performed separate from the threshold voltage sampling and data programming phase during a refresh frame and a second additional on-bias stress operation can be performed during a vertical blanking frame. The display pixel may be configured to receive an initialization voltage and an anode reset voltage, either of which can be dynamically tuned to match the stress of the first and second additional on-bias stress operations to minimize flicker.

公开(公告)号：US20210255668A1

公开(公告)日：2021-08-19

申请号：US16791905

申请日：2020-02-14

Applicant: Apple Inc.

Inventor： Xiao Xiang ,  Tong Chen ,  Fan Gui ,  Mark T. Winkler ,  Ran Tu ,  Tsu-Hui Lin ,  Wenrui Cai ,  Yun Wang

IPC: G06F1/16 ,  G06F3/041 ,  G06F3/042

Abstract: In some embodiments, a display stack includes a set of light-emitting elements, and a display backplane that includes a set of conductors and is electrically coupled to the set of light-emitting elements. A conductor in the set of conductors has a length, and a curved edge extending along at least a portion of the length. In some embodiments, a display stack includes a set of light-emitting elements; a set of transistors, electrically coupled to the set of light-emitting elements; and a set of conductors, electrically coupled to the set of transistors. The set of transistors may be electrically coupled to the set of conductors at a set of conductive pads. A plurality of conductive pads in the set of conductive pads is coupled to a single conductor in the set of conductors. The single conductor approaches different conductive pads in the plurality of conductive pads at different angles.

公开(公告)号：US20210082349A1

公开(公告)日：2021-03-18

申请号：US16603189

申请日：2018-03-27

Applicant: Apple Inc.

Inventor： Junhua Tan ,  Kingsuk Brahma ,  Jie Won Ryu ,  Shengkui Gao ,  Shiping Shen ,  Majid Gharghi ,  Hyunwoo Nho ,  Injae Hwang ,  Kavinaath Murugan ,  Sun-II Chang ,  Chin-Wei Lin ,  Hyunsoo Kim ,  Rui Zhang ,  Jesse Aaron Richmond ,  Yun Wang ,  Hung Sheng Lin

IPC: G09G3/3258 ,  G09G3/3233

Abstract: An electronic device comprises a controller. The controller is configured to provide a first signal to a display of the electronic device to turn off the display. The controller is also configured to provide a second signal to the display to alter a gate source voltage of a drive transistor coupled to a light emitting diode (LED) of a pixel of the display while the display is turned off.

公开(公告)号：US10950182B2

公开(公告)日：2021-03-16

申请号：US16567972

申请日：2019-09-11

Applicant: Apple Inc.

Inventor： Junhua Tan ,  Kingsuk Brahma ,  Jie Won Ryu ,  Shengkui Gao ,  Shiping Shen ,  Majid Gharghi ,  Hyunwoo Nho ,  Injae Hwang ,  Kavinaath Murugan ,  Sun-Il Chang ,  Chin-Wei Lin ,  Hyunsoo Kim ,  Rui Zhang ,  Jesse Aaron Richmond ,  Yun Wang ,  Hung Sheng Lin ,  Alex H. Pai ,  Chaohao Wang ,  Wei H. Yao

IPC: G09G3/3283 ,  G09G3/3241 ,  G09G3/3258 ,  G09G3/3291

Abstract: The present disclosure relates generally to systems and methods that may reduce a reduction in visual artifacts related to hysteresis of a light emitting diode (LED) electronic display. In one example, an electronic device may include a controller. The controller is may provide a signal to a pixel of a display of the electronic device while at least a portion of the display is turned off. The signal may include a first current and a second current. The first current may be designed to increase an ambient temperature corresponding to the pixel. The second current may be generated as part of an active panel conditioning operation. By applying the first current and the second current, hysteresis settling times from the pixel may improve, therefore improving speeds of sensing and compensation operations of the electronic device.

公开(公告)号：US10311782B2

公开(公告)日：2019-06-04

申请号：US15246345

申请日：2016-08-24

Applicant: Apple Inc.

Inventor： Warren S. Rieutort-Louis ,  Keitaro Yamashita ,  Tsung-Ting Tsai ,  Yun Wang ,  Ting-Kuo Chang ,  Cheng-Ho Yu ,  Shinya Ono

IPC: G09G3/3233 ,  G09G3/3266

Abstract: An organic light-emitting diode display may contain an array of display pixels. Each display pixel may have a respective organic light-emitting diode that is controlled by a drive transistor. At low temperatures, it may be necessary to increase the amount of current through an organic light-emitting diode to achieve a desired luminance level. In order to increase the current through the light-emitting diode, the ground voltage level may be lowered. However, this may lead to thin-film transistors within the pixel leaking, which may result in undesirable display artifacts such as bright dots being displayed in a dark image. In order to prevent leakage in the transistors, the transistors may be coupled to separate reference voltage supplies or separate control lines. Additionally, the transistors may be positioned to minimize leakage even at low ground voltage levels.

公开(公告)号：US11887546B2

公开(公告)日：2024-01-30

申请号：US18192905

申请日：2023-03-30

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Shinya Ono ,  Zino Lee ,  Yun Wang ,  Fan Gui

IPC: G09G3/3258 ,  H01L29/786 ,  H10K59/121

CPC classification number: G09G3/3258 ,  H01L29/7869 ,  H10K59/1213 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/043

Abstract: A display pixel is provided that is operable to support hybrid compensation scheme having both in-pixel threshold voltage canceling and external threshold voltage compensation. The display may include multiple p-type silicon transistors with at least one n-type semiconducting-oxide transistor and one storage capacitor. An on-bias stress phase may be performed prior to a threshold voltage sampling and data programming phase to mitigate hysteresis and improve first frame response. In low refresh rate displays, a first additional on-bias stress operation can be performed separate from the threshold voltage sampling and data programming phase during a refresh frame and a second additional on-bias stress operation can be performed during a vertical blanking frame. The display pixel may be configured to receive an initialization voltage and an anode reset voltage, either of which can be dynamically tuned to match the stress of the first and second additional on-bias stress operations to minimize flicker.

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：US20200302856A1

公开(公告)日：2020-09-24

申请号：US16746325

申请日：2020-01-17

Applicant: Apple Inc.

Inventor： Xin Lin ,  Yun Wang ,  Chin-Wei Lin ,  Majid Gharghi ,  Fan Gui ,  Chen-Ming Chen ,  Jie Won Ryu ,  Hyunwoo Nho ,  Alex H. Pai ,  Kingsuk Brahma ,  Junhua Tan ,  Szu Heng Tseng

IPC: G09G3/32 ,  G09G3/20

Abstract: A system includes an electronic display panel that has a plurality of pixels configured to depict frames of image data. The electronic display also includes display driver circuitry configured to, for a first frame of image data representing first image content, modify a gate-to-source voltage of a transistor of a first pixel of the plurality of pixels to a content-dependent first gate-to-source voltage. Additionally, after modifying the gate-to-source voltage to the first gate-to-source voltage, the display driver circuitry is configured to program the first pixel by modifying the gate-to-source voltage to a gate-to-source programming voltage that differs from the first gate-to-source voltage and is based on image data associated with the pixel from the first frame of the image data. Furthermore, the display driver circuitry is configured to cause the plurality of pixels to emit light.