公开(公告)号：US11822165B1

公开(公告)日：2023-11-21

申请号：US16875891

申请日：2020-05-15

Applicant: Apple Inc.

Inventor： Cihan Yilmaz ,  Supriya Goyal ,  Shih-Chyuan Fan Jiang ,  Paul V. Johnson ,  Se Hyun Ahn ,  Cheng Chen ,  Yuan Chen ,  Hyungryul Choi ,  Zhibing Ge ,  Christiaan A. Ligtenberg ,  Dinesh C. Mathew ,  Hyunmin A. Song ,  Chaohao Wang ,  Jiaying Wu

IPC: G02F1/13 ,  G02F1/163 ,  G02F1/1523 ,  G02F1/1343 ,  G02F1/1524 ,  G02F1/155

CPC classification number: G02F1/1323 ,  G02F1/13439 ,  G02F1/155 ,  G02F1/1524 ,  G02F1/1525 ,  G02F1/163

Abstract: A display may have display layers that form an array of pixels. An angle-of-view adjustment layer may overlap the display layers. The angle-of-view adjustment layer may include an array of adjustable light blocking structures formed from electrochromic material. The electrochromic material may be interposed between first and second electrode layers. When it is desired to operate the display in a private viewing mode, control circuitry may apply a current to the first and second electrodes that causes the electrochromic material to become more opaque, thereby restricting the angle of view of the display. When it is desired to operate the display in a public viewing mode, control circuitry may apply a current to the first and second electrodes that causes the electrochromic material to become more transparent, thereby opening up the angle of view of the display.

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.

公开(公告)号：US20220375427A1

公开(公告)日：2022-11-24

申请号：US17714805

申请日：2022-04-06

Applicant: Apple Inc.

Inventor： Hari P Paudel ,  Chaohao Wang ,  Hopil Bae ,  Mahdi Farrokh Baroughi ,  Wei Chen ,  Wei H Yao ,  Seung B Rim ,  Sunmin Jang

IPC: G09G5/10

Abstract: An electronic device may display image content via a tile-based display by controlling light emission from display pixels of the tile-based display. Based on image data associated with the image content, a processing circuitry of the tile-based display may receive a potential tile boundary. The processing circuitry may resample the image data based on geometry of the tile boundary and positions of the display pixels on the tile-based panel. After resampling the image data, the processing circuitry may adjust gain of the tile boundary display pixels according to a gain mask to compensate for the tile boundary.

公开(公告)号：US11295703B2

公开(公告)日：2022-04-05

申请号：US16926545

申请日：2020-07-10

Applicant: Apple Inc.

Inventor： Yang Li ,  Yingying Tang ,  Chaohao Wang ,  Wei H. Yao

IPC: G09G5/10

Abstract: An electronic device may be provided with an ambient light sensor, a display that displays image content, and control circuitry. The control circuitry may adjust a peak allowable brightness of the display based on an ambient light brightness and based on the image content being displayed. For example, the control circuitry may analyze frames of display data to determine an average pixel luminance level. Low average pixel luminance levels correspond to mostly dark image content, whereas high average pixel luminance levels correspond to mostly light image content. When an electronic device is outdoors and displaying mostly dark images with low average pixel luminance levels, the control circuitry may take advantage of the display's maximum achievable brightness to improve readability. When an electronic device is outdoors and displaying mostly light images with high average pixel luminance levels, the control circuitry may scale the maximum allowable brightness down to reduce power consumption.

公开(公告)号：US20220101790A1

公开(公告)日：2022-03-31

申请号：US17472322

申请日：2021-09-10

Applicant: Apple Inc.

Inventor： John T. Wetherell ,  Cheuk Chi Lo ,  Chun-Yao Huang ,  Lingtao Wang ,  Derek Keith Shaeffer ,  Henry C. Jen ,  Hasan Akyol ,  Xuebei Yang ,  Chung-Lun Edwin Hsu ,  Patrick Bryce Bennett ,  Chun-Ming Tang ,  Yingkan Lin ,  Sheng Zhang ,  Chaohao Wang ,  Runjie Xu ,  Shingo Hatanaka

IPC: G09G3/3233

Abstract: Systems and methods may reduce or eliminate image artifacts due to a defective pixel of an electronic display. An electronic display may include pixels that respectively include a self-emissive element, pixel drive circuitry that supplies a pixel drive current to drive the self-emissive element, and signal routing circuitry that reduces or eliminates a visual artifact due to a defective pixel among the pixels. The signal routing circuitry may do this by turning off the self-emissive element, supplying image data from the pixel drive circuitry to a first adjacent pixel, or receiving image data from other pixel drive circuitry from the first adjacent pixel or a second adjacent pixel.

公开(公告)号：US11183155B2

公开(公告)日：2021-11-23

申请号：US16870197

申请日：2020-05-08

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Chaohao Wang ,  Shilin Zhu

IPC: G09G5/39 ,  G06N3/02 ,  G06T1/60 ,  G09G5/00

Abstract: Systems and methods for improving perceived image quality with reduced implementation associated cost and/or improved operational efficiency. A display pipeline includes an input buffer that stores input image data corresponding with an image pixel window, in which the input image data has a first bit-depth and includes image data corresponding with an image pixel in the image pixel window. The display pipeline includes bit-depth adjustment circuitry, which includes a neural network that operates based on a set of bit-depth adjustment parameters to process the input image data to determine whether banding greater than a perceivability threshold is expected to result when the image is displayed directly using the input image data with the first bit-depth and to process the image data corresponding with the image pixel to expand the image data from the first bit-depth to a second bit-depth when the banding visual artifact is greater than the perceivability threshold.

公开(公告)号：US11081069B2

公开(公告)日：2021-08-03

申请号：US16509406

申请日：2019-07-11

Applicant: Apple Inc.

Inventor： Jun Li ,  Chaohao Wang ,  Hopil Bae ,  Mitchell H. Kline ,  Xiaokai Li

IPC: G06F1/00 ,  G09G3/36 ,  G09G3/34 ,  G09G5/14

Abstract: Aspects of the subject technology relate to displays for electronic devices and methods of operating the displays. The display may include an array of display pixels arranged in rows and columns. A v-drive operation in which rows are alternatingly operated about a center of each of two halves of the display is provided. Data rendering operations are provided that generate a virtual frame rate boost.

公开(公告)号：US10943959B1

公开(公告)日：2021-03-09

申请号：US16270142

申请日：2019-02-07

Applicant: Apple Inc.

Inventor： Aaron L. Holsteen ,  Chaohao Wang ,  Cheng Chen ,  Jun Li ,  Shih-Chyuan Fan Jiang ,  Xiaokai Li ,  Young Cheol Yang ,  Zhibing Ge

IPC: H01L27/32 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1333 ,  G02F1/1347

Abstract: An optical system may include equipment with a housing that is configured to receive external equipment such as a cellular telephone. The external equipment may include a display. To control the persistence of the display, the optical system may include a light modulating layer. The light modulating layer may switch between a transparent state in which display image light is passed through the light modulating layer to reach the viewer and an opaque state in which display image light is blocked by the light modulating layer from reaching the viewer. The light modulating layer may be placed in the transparent state for a portion of each display frame and the opaque state for the remaining portion of each display frame. The light modulating layer may be formed in the housing of the equipment that receives the external equipment or may be formed with the external equipment directly.

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.

公开(公告)号：US20210027751A1

公开(公告)日：2021-01-28

申请号：US16928859

申请日：2020-07-14

Applicant: Apple Inc.

Inventor： Yingying Tang ,  Chaohao Wang ,  Wei H. Yao ,  Christopher E. Glazowski ,  Woo Shik Jung ,  Scott R. Johnston

IPC: G09G5/391 ,  G09G5/14

Abstract: Techniques for implementing and/or operating an electronic device that includes a display panel, which displays an image and includes a first panel section implemented with a lower pixel resolution and a second panel section implemented with a higher pixel resolution, an optical sensor disposed behind the first panel section of the display panel, and image processing circuitry communicatively coupled to the display panel. The image processing circuitry receives source image data corresponding with the image, in which the source image data is indicative of target luminance of a display pixel, determines a pixel resolution surrounding the display pixel, processes the source image based at least in part on the pixel resolution surrounding the display pixel to facilitate determining display image data corresponding with the display pixel, and outputs the display image data to enable the display panel to display the image based on the display image data.