公开(公告)号：US11164540B2

公开(公告)日：2021-11-02

申请号：US16711319

申请日：2019-12-11

Applicant: Apple Inc.

Inventor： Peter F. Holland ,  Mahesh B. Chappalli ,  Yifan Zhang ,  Tae-Wook Koh

IPC: G09G5/10

Abstract: An electronic device may include an electronic display and a display pipeline. The electronic display may include multiple pixels to display images based at least in part on pixel data. The display pipeline may receive image data and process the image data to determine the pixel data. The display pipeline may include burn-in compensation circuitry to apply gains to the image data based at least in part on burn-in statistics to generate the pixel data. The gain to be applied to the image data for a pixel of the electronic display is determined by the burn-in compensation circuitry, based at least in part on an emission duty cycle of the pixel, to compensate the image data for the pixel for burn-in related aging of the pixel.

公开(公告)号：US10991283B2

公开(公告)日：2021-04-27

申请号：US16403366

申请日：2019-05-03

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Chaohao Wang ,  Michael Slootsky ,  Yifan Zhang ,  Tae-Wook Koh

IPC: G09G3/00 ,  G09G3/3208 ,  G09G3/36

Abstract: A flat-panel display device and method to prevent display panel burn-in through a decimated look-up table with pixel shifting in a display or an augmented reality display.

公开(公告)号：US20200099012A1

公开(公告)日：2020-03-26

申请号：US16448918

申请日：2019-06-21

Applicant: Apple Inc.

Inventor： Yifan Zhang ,  Amin Salehi ,  Yun Liu ,  Paul S. Drzaic ,  Tae-Wook Koh ,  Chih Jen Yang ,  Bhadrinarayana Lalgudi Visweswaran ,  Chieh-Wei Chen

IPC: H01L51/52 ,  H01L27/32

Abstract: Display panel stack-up structures are described. In an embodiment, a display panel includes a substrate, a light source, and a multiple layer thin film encapsulation over the light source. In an embodiment, the display panel additionally includes an anti-reflection layer over the light source. In an embodiment, an incoherence layer is located within the thin film encapsulation.

公开(公告)号：US10410569B2

公开(公告)日：2019-09-10

申请号：US15874821

申请日：2018-01-18

Applicant: Apple Inc.

Inventor： Paul S. Drzaic ,  Ross Thompson ,  Guy Cote ,  Christopher P. Tann ,  Jerrold V. Hauck ,  Yifan Zhang ,  Jean-Pierre Guillou ,  Ian C. Hendry ,  Vanessa C. Heppolette ,  Tae-Wook Koh ,  Arthur L. Spence

IPC: G09G3/20 ,  G09G3/00 ,  G06F3/06 ,  G09G3/3208 ,  G06F9/4401 ,  G09G3/32 ,  G06F9/451

Abstract: A data processing system can store a long-term history of pixel luminance values in a secure memory and use those values to create burn-in compensation values that are used to mitigate burn-in effect on a display. The long-term history can be updated over time with new, accumulated pixel luminance values.

公开(公告)号：US20170076661A1

公开(公告)日：2017-03-16

申请号：US15237500

申请日：2016-08-15

Applicant: Apple Inc.

Inventor： Yifan Zhang ,  Paul S. Drzaic ,  Wei Chen

IPC: G09G3/3208 ,  G09G3/20

CPC classification number: G09G3/3208 ,  G09G3/2003 ,  G09G2300/0413 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/046 ,  G09G2320/048 ,  G09G2320/0666 ,  G09G2360/144 ,  G09G2360/145 ,  G09G2360/16

Abstract: An electronic device may be provided with a display. A content generator may generate frames of image data to be displayed on the display. The display may have an array of pixels that emit light to display images. The pixels may contain light-emitting devices such as organic light-emitting diodes, quantum dot light-emitting diodes, and light-emitting diodes formed from discrete semiconductor dies. As a result of aging, the light producing capabilities of the light-emitting devices may degrade over time. The electronic device may have a temperature sensor that gathers temperature measurements. A pixel luminance degradation compensator may apply compensation factors to uncorrected pixel luminance values associated with the frames of image data to produce corresponding corrected pixel luminance values for the display. The compensation factors may be based on aging history information such as pixel luminance history and temperature measurements.

Abstract translation: 电子设备可以设置有显示器。 内容生成器可以生成要在显示器上显示的图像数据的帧。 显示器可以具有发射光以显示图像的像素阵列。 像素可以包含诸如有机发光二极管，量子点发光二极管和由分立半导体管芯形成的发光二极管等发光器件。 作为老化的结果，发光装置的发光能力随时间而降低。 电子设备可以具有收集温度测量值的温度传感器。 像素亮度降低补偿器可以对与图像数据的帧相关联的未校正像素亮度值应用补偿因子，以产生用于显示的对应的校正像素亮度值。 补偿因子可以基于老化历史信息，例如像素亮度历史和温度测量。

公开(公告)号：US12142219B1

公开(公告)日：2024-11-12

申请号：US18465978

申请日：2023-09-12

Applicant: Apple Inc.

Inventor： Tae-Wook Koh ,  Mahesh B Chappalli ,  Jared S Price ,  Vincent Z Young ,  Yifan Zhang

IPC: G09G5/10 ,  G09G3/3233

Abstract: An electronic device may include an electronic display having a pixel and that displays an image based on compensated image data. The electronic device may also include image processing circuitry communicatively coupled to the electronic display. The image processing circuitry may receive image data and determine a gain value for the pixel based on an aging value of the pixel that is based on previously displayed pixel values of the pixel. The image processing circuitry may also adjust the gain value based on a pixel value of the image data corresponding to the pixel to generate an updated gain value and adjust the pixel value of the image data based on the updated gain value to generate, at least in part, the compensated image data.

公开(公告)号：US12125436B1

公开(公告)日：2024-10-22

申请号：US18325451

申请日：2023-05-30

Applicant: Apple Inc.

Inventor： Tae-Wook Koh ,  Mahesh B Chappalli ,  Vincent Z Young ,  Yifan Zhang ,  Jared S Price

IPC: G09G3/3208

CPC classification number: G09G3/3208 ,  G09G2320/0233 ,  G09G2320/041 ,  G09G2320/046

Abstract: An electronic device may include an electronic display having display pixels that display an image based on compensated image data. The electronic display may also include pixel drive circuitry that provides power to the display pixels in accordance with the compensated image data. Additionally, the electronic device may include burn-in compensation circuitry communicatively coupled to the electronic display that receives input image data and generates the compensated input image data based on the input image data, a pixel aging history corresponding to the display pixels, and a driver aging history corresponding to the pixel drive circuitry.

公开(公告)号：US20240304133A1

公开(公告)日：2024-09-12

申请号：US18180697

申请日：2023-03-08

Applicant: Apple Inc.

Inventor： Vincent Z Young ,  Mahesh B Chappalli ,  Tae-Wook Koh ,  Yifan Zhang ,  Jared S Price

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0233 ,  G09G2320/041 ,  G09G2320/046

Abstract: Image processing circuitry may include burn-in compensation circuitry that receives image data indicative of luminance outputs for display pixels of an electronic display and compensates the image data for burn-in related aging associated with the display pixels, generating compensated image data. Moreover, compensating the image data may include applying gains based on estimated amounts of aging associated with the display pixels and estimated amounts of current to be delivered to the display pixels. The image processing circuitry may also include burn-in statistics circuitry that tracks the estimated amounts of aging based on the compensated image data.

公开(公告)号：US20240040909A1

公开(公告)日：2024-02-01

申请号：US18329390

申请日：2023-06-05

Applicant: Apple Inc.

Inventor： Yifan Zhang ,  Amin Salehi ,  Chieh-Wei Chen ,  Hoyeon Kim ,  Paul S. Drzaic ,  Yun Liu

IPC: H10K59/80 ,  H10K59/38

CPC classification number: H10K59/876 ,  H10K59/38 ,  H10K59/873

Abstract: An electronic device may have a display such as an organic light-emitting diode display. The organic light-emitting diode display may have an array of organic light-emitting diode pixels that each have organic light-emitting diode layers interposed between a cathode and an anode. To improve off-axis luminance and luminance uniformity, the display may include green pixels with emission spectra having a narrow full width at half maximum, the display may include a reflective layer that is formed separately from a transparent anode, and/or the display may include a diffusive layer. The diffusive layer may be embedded in one or more encapsulation layers for the display. The diffusive layer may be a diffusive color filter.

公开(公告)号：US11488529B2

公开(公告)日：2022-11-01

申请号：US16849712

申请日：2020-04-15

Applicant: Apple Inc.

Inventor： Injae Hwang ,  Jesun Kim ,  Hyunwoo Nho ,  Jie Won Ryu ,  Hyunsoo Kim ,  Junhua Tan ,  Myungjoon Choi ,  Rebecca Park ,  Shiping Shen ,  Sun-Il Chang ,  Shengkui Gao ,  Kingsuk Brahma ,  Jesse Aaron Richmond ,  Changki Min ,  Yifan Zhang ,  Jiye Lee ,  Chaohao Wang

IPC: G09G3/3233 ,  G09G3/00

Abstract: A current-voltage (IV) relationship of a pixel having a diode is initially determined. A first voltage is determined that does not cause the diode to emit light, and a first current across the diode is sensed by applying the first voltage. A predetermined current is determined based on the first voltage and the IV relationship. A ratio is determined based on the first current, a target current, and the predetermined current. A ratio voltage is determined by applying the ratio to a predetermined target voltage. If the first current is less than the predetermined current, then the ratio voltage is applied to supply a target current to the diode. If the first current is greater than the predetermined current, then a second voltage is determined by averaging the first test voltage and the ratio voltage, and the second voltage is applied to supply the target current to the diode.