公开(公告)号：US11380231B2

公开(公告)日：2022-07-05

申请号：US16644932

申请日：2018-08-31

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Hung Sheng Lin ,  Hyunsoo Kim ,  Hyunwoo Nho ,  Injae Hwang ,  Jesse A. Richmond ,  Jie Won Ryu ,  Junhua Tan ,  Kavinaath Murugan ,  Kingsuk Brahma ,  Shengkui Gao ,  Shiping Shen ,  Sun-Il Chang ,  Myung-Je Cho ,  Yafei Bi ,  Myungjoon Choi ,  Weichuan Yao ,  Chaohao Wang

IPC: G09G3/00 ,  G09G3/3208

Abstract: Electronic devices and methods for compensating for aging or other effects in a display during a non-transmitting state (off state) of the display. Sensing may include emissive element sensing of the display and/or thin film transistor sensing of the display. Compensating for the effects may preserve or increase a uniformity of transmission of the display.

公开(公告)号：US20200005716A1

公开(公告)日：2020-01-02

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 ,  G09G3/3291 ,  G09G3/3241 ,  G09G3/3258

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：US11348533B1

公开(公告)日：2022-05-31

申请号：US16864241

申请日：2020-05-01

Applicant: Apple Inc.

Inventor： Shinya Ono ,  Chin-Wei Lin ,  Gihoon Choo ,  Shiping Shen ,  Jie Won Ryu ,  Zino Lee ,  Hassan Edrees ,  Ting-Kuo Chang

IPC: G09G3/3266

Abstract: A display may include an array of pixels, where each pixel in the array includes an organic light-emitting diode coupled to associated thin-film transistors. The thin-film transistors may be controlled using at least first and second horizontal scan line signals. Loading different data values into any given row in the array may cause the scan line signals to exhibit varying rise/fall times, which results in horizontal crosstalk and luminance non-uniformity across the display. The rise and fall times of the second scan line signal are crucial, so the second scan line signal is driven by two separate scan line drivers formed on both sides of the display. Only the fall time of the first scan line signal is crucial, so the first scan line signal is driven by only one peripheral scan line driver and is coupled to an auxiliary pull-down circuit that is only activated during the pull-down transition.

公开(公告)号：US11164515B2

公开(公告)日：2021-11-02

申请号：US16603188

申请日：2018-03-27

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Hyunwoo Nho ,  Sun-Il Chang ,  Junhua Tan ,  Jie Won Ryu ,  Shengkui Gao ,  Rui Zhang ,  Injae Hwang ,  Kingsuk Brahma ,  Jesse Aaron Richmond ,  Shiping Shen ,  Hyunsoo Kim

IPC: G09G3/3216 ,  G09G3/3225 ,  G09G3/3233

Abstract: An electronic device comprises an electronic display having an active area having a pixel. The electronic device also comprises processing circuitry configured to receive image data to send to the pixel and adjust the image data to generate corrected image data based at least in part on a stored correction value for the pixel. The processing circuitry also is configured to generate a test data to send to the pixel subsequent to sending corrected image data to the pixel, wherein the test data is selected based upon a comparison of at least one aspect of the corrected image data with a threshold value.

公开(公告)号：US11100845B1

公开(公告)日：2021-08-24

申请号：US16563452

申请日：2019-09-06

Applicant: Apple Inc.

Inventor： Hyunsoo Kim ,  Hung Sheng Lin ,  Hyunwoo Nho ,  Injae Hwang ,  Rui Zhang ,  Shengkui Gao ,  Shiping Shen ,  Sun-Il Chang

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

Abstract: A device may include a photosensitive transistor and a light-emitting diode. The light-emitting diode may include an anode. The anode may include a first portion having a first thickness and a second portion having a second thickness, wherein the second thickness is less than the first thickness. The device may also include driving circuitry that receives a data signal and causes light to emit from the light-emitting diode in response to the data signal. The photosensitive transistor may generate an electrical signal in response to light emitted from the light-emitting diode during the light emission.

公开(公告)号：US20210150950A1

公开(公告)日：2021-05-20

申请号：US16644932

申请日：2018-08-31

Applicant: Junhua TAN ,  Chin-Wei LIN ,  Hung Sheng LIN ,  Hyunsoo KIM ,  Hyunwoo NHO ,  Injae HWANG ,  Jesse A. RICHMOND ,  Jie Won RYU ,  Kavinaath MURUGAN ,  Kingsuk BRAHMA ,  Shengkui GAO ,  Shiping SHEN ,  Sun-Il CHANG ,  Myung-Je CHO ,  Yafei BI ,  Myungjoon CHOI ,  Chaohao WANG ,  Weichuan YAO ,  Apple Inc.

Inventor： Chin-Wei Lin ,  Hung Sheng Lin ,  Hyunsoo Kim ,  Hyunwoo Nho ,  Injae Hwang ,  Jesse A. Richmond ,  Jie Won Ryu ,  Junhua Tan ,  Kavinaath Murugan ,  Kingsuk Brahma ,  Shengkui Gao ,  Shiping Shen ,  Sun-Il Chang ,  Myung-Je Cho ,  Yafei Bi

IPC: G09G3/00

Abstract: Electronic devices and methods for compensating for aging or other effects in a display during a non-transmitting state (off state) of the display. Sensing may include emissive element sensing of the display and/or thin film transistor sensing of the display. Compensating for the effects may preserve or increase a uniformity of transmission of the display.

公开(公告)号：US10984713B1

公开(公告)日：2021-04-20

申请号：US16409489

申请日：2019-05-10

Applicant: Apple Inc.

Inventor： Junhua Tan ,  Chaohao Wang ,  Jun Li ,  Myungjoon Choi ,  Hyunsoo Kim ,  Shengkui Gao ,  Injae Hwang ,  Sun-Il Chang ,  Jie Won Ryu ,  Hyunwoo Nho ,  Shiping Shen

IPC: G09G3/3233

Abstract: An electronic display system may include a display panel used to display an image through emitting light. The electronic display system may also include processing circuitry that receives indication of an image to be displayed on the display panel and generates one or more signals to communicate the image on the display panel. The processing circuitry may compensate for non-uniformities in light emission between pixels of the display due to current-voltage non-uniformities.

公开(公告)号：US10573234B2

公开(公告)日：2020-02-25

申请号：US16049462

申请日：2018-07-30

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Hyunwoo Nho ,  Chaohao Wang ,  Jie Won Ryu ,  Kingsuk Brahma ,  Shiping Shen ,  Shengkui Gao ,  Hyunsoo Kim ,  Sun-Il Chang ,  Junhua Tan ,  Injae Hwang ,  Myungjoon Choi

IPC: G09G3/34 ,  G09G3/3233 ,  G09G3/3258

Abstract: A method for operating an electronic display includes displaying image frames and receiving operational parameters of the electronic display based on illuminating a sense pixel of at least one row of pixels of the electronic display when displaying the image frames. A first set of pixels below the at least one row of pixels renders a portion of a first image frame and a second set of pixels above the at least one row of pixels renders a portion of a second image frame. The method also includes adjusting image display of a third image frame on the electronic display based on the operational parameters.

公开(公告)号：US12136394B2

公开(公告)日：2024-11-05

申请号：US16802354

申请日：2020-02-26

Applicant: Apple Inc.

Inventor： Hyunwoo Nho ,  Myungjoon Choi ,  Hyunsoo Kim ,  Mohammad Ali Jangda ,  Jie Won Ryu ,  Shiping Shen ,  Kingsuk Brahma ,  Chaohao Wang ,  Wei H. Yao ,  Alex H. Pai

IPC: G09G3/3258 ,  G09G3/3233

Abstract: An electronic device includes a display having multiple regions of pixels. Each pixel includes a diode that emits light based on an amount of current through the diode and a transistor that controls the amount of current flowing through the diode. The electronic device includes driver-integrated circuitry that reduces hysteresis in a first transistor of a first pixel of a region of pixels, settles a threshold voltage of the first transistor, applies a test voltage to the first transistor, and senses a current across the first transistor. The electronic device includes processing circuitry that determines a predetermined voltage based on the current and a predetermined current-voltage relationship determined at an initial temperature, determines a voltage difference between the test voltage and the predetermined voltage, and applies the predetermined voltage and the voltage difference to a second transistor of a second pixel of the region of pixels.

公开(公告)号：US11663973B1

公开(公告)日：2023-05-30

申请号：US16409583

申请日：2019-05-10

Applicant: Apple Inc.

Inventor： Junhua Tan ,  Shengkui Gao ,  Myungjoon Choi ,  Injae Hwang ,  Chaohao Wang ,  Myung-Je Cho ,  Hyunwoo Nho ,  Sun-Il Chang ,  Jesse A. Richmond ,  Kingsuk Brahma ,  Jie Won Ryu ,  Shiping Shen ,  Yunhui Hou

IPC: G09G3/3258 ,  G09G3/32 ,  G09G3/3233

CPC classification number: G09G3/3258 ,  G09G3/32 ,  G09G3/3233 ,  G09G2320/0233 ,  G09G2320/0646 ,  G09G2320/0693 ,  G09G2330/08 ,  G09G2330/12

Abstract: External compensation of display panels may employ measurement or sensing circuitry configured to measure the output of a pixel and compensate for variations. Due to effects from the sensing circuitry, a mismatch between a target current and the actual current in the pixel may occur. Systems and methods that compensate for the effects from sensing circuitry and reduce or mitigate the mismatch are described. Systems and methods described herein include compensation circuitry that is capable of employing correction factors to compensate for the effects due to the presence of sensing circuitry. Methods for determining the correction factor are also described.