公开(公告)号：US20230080809A1

公开(公告)日：2023-03-16

申请号：US17990510

申请日：2022-11-18

Applicant: Apple Inc.

Inventor： Shinya Ono ,  Chin-Wei Lin ,  Zino Lee ,  Chun-Chieh Lin ,  Chen-Ming Chen

IPC: G09G3/3291 ,  G09G3/3266

Abstract: A display may include an array of pixels. Each pixel in the array includes an organic light-emitting diode coupled to a drive transistor, a data loading transistor, a first capacitor for storing data charge, and a second capacitor. During a data programming phase, the data loading transistor may be activated to load in a data value onto the first capacitor. After the data programming phase, the second capacitor may be configured to receive a lower voltage, which extends a threshold voltage sampling time for the pixel. Configured and operated in this way, the temperature luminance sensitivity of the display can be reduced.

公开(公告)号：US20220383817A1

公开(公告)日：2022-12-01

申请号：US17884297

申请日：2022-08-09

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Hung Sheng Lin ,  Shih Chang Chang ,  Shinya Ono

IPC: G09G3/3233 ,  H01L29/786 ,  G09G3/3266 ,  G09G3/3275 ,  H01L27/12

Abstract: A display may have an array of pixels each of which has a light-emitting diode such as an organic light-emitting diode. A drive transistor and an emission transistor may be coupled in series with the light-emitting diode of each pixel between a positive power supply and a ground power supply. The pixels may include first and second switching transistors. A data storage capacitor may be coupled between a gate and source of the drive transistor in each pixel. Signal lines may be provided in columns of pixels to route signals such as data signals, sensed drive currents from the drive transistors, and predetermined voltages between display driver circuitry and the pixels. The switching transistors, emission transistors, and drive transistors may include semiconducting-oxide transistors and silicon transistors and may be n-channel transistors or p-channel transistors.

公开(公告)号：US11488538B1

公开(公告)日：2022-11-01

申请号：US17213041

申请日：2021-03-25

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Shinya Ono ,  Gihoon Choo

IPC: G09G3/3266

Abstract: A display is provided that includes an array of display pixels that receive data signals from display driver circuitry and that receive control signals from gate driver circuitry. The gate driver circuitry may include a chain of row driver circuits. Each row driver circuit may include a scan driver circuit and a scan inverter circuit. An enable transistor may be interposed between the scan driver circuit and the scan inverter circuit and may be selectively disabled to decouple the scan inverter circuit from the scan driver circuit to allow the scan inverter circuit to operate independent from the scan driver circuit. The scan inverter circuit may include a transistor that receives a scan pulse signal from the scan driver circuit and may further include additional transistors connected in a negative feedback configuration to reduce a drain-to-source voltage across the transistor to reduce leakage across the transistor during blanking times.

公开(公告)号：US11380260B2

公开(公告)日：2022-07-05

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-Il Chang ,  Chin-Wei Lin ,  Hyunsoo Kim ,  Rui Zhang ,  Jesse Aaron Richmond ,  Yun Wang ,  Hung Sheng Lin

IPC: G09G3/3233 ,  G09G3/3258 ,  G09G3/3275 ,  G09G3/3266

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：US20220114962A1

公开(公告)日：2022-04-14

申请号：US17555694

申请日：2021-12-20

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Hung Sheng Lin ,  Shih Chang Chang ,  Shinya Ono

IPC: G09G3/3233 ,  H01L29/786 ,  G09G3/3266 ,  G09G3/3275 ,  H01L27/12

Abstract: A display may have an array of pixels each of which has a light-emitting diode such as an organic light-emitting diode. A drive transistor and an emission transistor may be coupled in series with the light-emitting diode of each pixel between a positive power supply and a ground power supply. The pixels may include first and second switching transistors. A data storage capacitor may be coupled between a gate and source of the drive transistor in each pixel. Signal lines may be provided in columns of pixels to route signals such as data signals, sensed drive currents from the drive transistors, and predetermined voltages between display driver circuitry and the pixels. The switching transistors, emission transistors, and drive transistors may include semiconducting-oxide transistors and silicon transistors and may be n-channel transistors or p-channel transistors.

公开(公告)号：US11282462B2

公开(公告)日：2022-03-22

申请号：US17062786

申请日：2020-10-05

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：US11227536B2

公开(公告)日：2022-01-18

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: G09G3/30 ,  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.

公开(公告)号：US11100839B2

公开(公告)日：2021-08-24

申请号：US16746288

申请日：2020-01-17

Applicant: Apple Inc.

Inventor： Shinya Ono ,  Chin-Wei Lin ,  Jie Won Ryu

IPC: G09G5/00 ,  G09G3/20

Abstract: The present disclosure relates to an electronic device that includes a display that has a plurality of scan lines. The display also includes a first data line that has a first number of pixels. The first data line forms a first number of crossovers with the plurality of scan lines. Additionally, the display includes a second data line that has a second number of pixels that is different than the first number of pixels. The second data line forms a second number of crossovers with the plurality of scan lines that is equal to the first number of crossovers.

公开(公告)号：US20210193049A1

公开(公告)日：2021-06-24

申请号：US17075587

申请日：2020-10-20

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Shinya Ono ,  Jung Yen Huang

IPC: G09G3/3266 ,  G09G3/3291 ,  G09G3/20

Abstract: A display pixel may include an organic light-emitting diode, one or more emission transistors, a drive transistor, a gate setting transistor, a data loading transistor, and an initialization transistor. The drive transistor may be implemented as a semiconducting-oxide transistor to mitigate threshold voltage hysteresis to improve first frame response at high refresh rates, to reduce undesired luminance jumps at low refresh rates, and to reduce image sticking. The gate setting transistor may also be implemented as a semiconducting-oxide transistor to reduce leakage at the gate terminal of the drive transistor. The initialization transistor may also be implemented as a semiconducting-oxide transistor so that it can be controlled using a shared emission signal to reduce routing complexity. The remaining transistors in the pixel may be implemented as p-type silicon transistors. Display pixels configured in this way can support in-pixel threshold voltage compensation and on-bias stress phase to further mitigate the hysteresis.

公开(公告)号：US20210049962A1

公开(公告)日：2021-02-18

申请号：US17088263

申请日：2020-11-03

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Chih-Wei Yeh ,  Chin-Wei Lin ,  Hung Sheng Lin ,  Hyunwoo Nho ,  Injae Hwang ,  Jie Won Ryu ,  Junhua Tan ,  Paolo Sacchetto ,  Rui Zhang ,  Shengkui Gao ,  Sun-Il Chang ,  Wei H. Yao ,  Howard H. Tang

IPC: G09G3/3233 ,  G09G3/3275

Abstract: An apparatus receives current image frame data and data relating to at least one previous image frame for an electronic display. One or more parameters related to hysteresis of transistors in the electronic display are sensed. A correlation device, such as a look-up table, receives the sensed parameter or parameters and the data relating to one or more image frames, and uses this information, at least in part, to output an appropriate compensation signal for the current image frame data. The compensated current image frame data may then be supplied to the electronic display to reduce or eliminate the effects of hysteresis on the displayed image.