公开(公告)号：US20210141449A1

公开(公告)日：2021-05-13

申请号：US16644920

申请日：2018-08-30

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Chaohao Wang

IPC: G06F3/01 ,  G09G3/20

Abstract: The present disclosure relates to electronic devices that include displays that show dynamic foveated content. For example, portions of the content may be shown in different resolutions on different areas of the display based on a user's gaze that can be monitored with an eye tracker. Based on eye tracking data collected by the eye tracker, a processor of the electronic device may stop or slow the transmission of pixel data associated with one or more frames of the content. Additionally, the processor may generate pixel data such that the display may gradually transition from employing dynamic foveation to employing static foveation.

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：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：US20210072428A1

公开(公告)日：2021-03-11

申请号：US17005191

申请日：2020-08-27

Applicant: Apple Inc.

Inventor： Yi-Pai Huang ,  Manjap Singh ,  Cheng-Ho Yu ,  ByoungSuk Kim ,  Yi Huang ,  Hitoshi Yamamoto ,  Mathew K. Mathai ,  Chieh-Wei Chen ,  Ping-Yen Chou ,  Donghee Nam ,  Chaohao Wang ,  Hao Chen

IPC: G02B3/00 ,  G02B27/01 ,  G06F1/16

Abstract: A lenticular display may be formed with convex curvature. The lenticular display may have a lenticular lens film with lenticular lenses that extend across the length of the display. The lenticular lenses may be configured to enable stereoscopic viewing of the display. To enable more curvature in the display while ensuring satisfactory stereoscopic display performance, the display may have stereoscopic zones and non-stereoscopic zones. A central stereoscopic zone may be interposed between first and second non-stereoscopic zones. The non-stereoscopic zones may have more curvature than the stereoscopic zone. To prevent crosstalk within the lenticular display, a louver film may be incorporated into the display. The pixel array may have a diagonal layout and may be covered by vertically oriented lenticular lenses.

公开(公告)号：US20210012733A1

公开(公告)日：2021-01-14

申请号：US17034894

申请日：2020-09-28

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Brijesh Tripathi ,  Christopher Philip Alan Tann ,  David S. Zalatimo ,  Guy Cote ,  Hao Nan ,  Marc Albrecht ,  Paolo Sacchetto ,  Sandro H. Pintz

IPC: G09G3/36

Abstract: An electronic device may generate content that is to be displayed on a display. The display may have an array of liquid crystal display pixels for displaying image frames of the content. The image frames may be displayed with positive and negative polarities to help reduce charge accumulation effects. A charge accumulation tracker may analyze the image frames to determine when there is a risk of excess charge accumulation. The charge accumulation tracker may analyze information on gray levels, frame duration, and frame polarity. The charge accumulation tracker may compute a charge accumulation metric for entire image frames or may process subregions of each frame separately. When subregions are processed separately, each subregion may be individually monitored for a risk of excess charge accumulation.

公开(公告)号：US10714011B2

公开(公告)日：2020-07-14

申请号：US16132322

申请日：2018-09-14

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Chih-Wei Yeh ,  Yunhui Hou ,  Chaohao Wang ,  Wei H. Yao ,  Paolo Sacchetto ,  Derek K. Shaeffer ,  Henry C. Jen ,  Shingo Hatanaka ,  Hasan Akyol ,  Mahdi Farrokh Baroughi ,  Hopil Bae

IPC: G09G3/3258 ,  G09G3/3233

Abstract: A mobile electronic device includes a display having an active array and a reference array. The active array includes a pixel and the reference array includes a reference pixel. The mobile electronic device also includes processing circuitry communicatively coupled to the display. The processing circuitry is configured to instruct the active array to drive the pixel based at least in part on a current-voltage relationship of the pixel and a reference current-voltage relationship of the reference pixel.

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：US10535287B2

公开(公告)日：2020-01-14

申请号：US15275374

申请日：2016-09-24

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Lu Zhang ,  Zhibing Ge ,  Shih-Chyuan Fan Jiang ,  Ilie Garbacea ,  Marc Albrecht ,  Kingsuk Brahma ,  Hopil Bae ,  Paolo Sacchetto ,  Jie Won Ryu ,  Sandro H. Pintz ,  Chengrui Le

IPC: G09G3/34 ,  G09G3/3258 ,  G09G3/36 ,  G09G3/20

Abstract: Systems and methods are provided for improving displayed image quality of an electronic display that includes a display pixel. The electronic display displays a first image frame directly after a second image frame by applying an analog electrical signal to the display pixel. To facilitate display of the first image frame, circuitry receives image data corresponding to the image frame, in which the image data includes a grayscale value that indicates target luminance of the display pixel; determines expected refresh rate of the first image frame based at least in part on actual refresh rate of the second image frame; determines a pixel response correction offset based at least in part on the expected refresh rate of the first image frame; and determines processed image data by applying the pixel response correction offset to the grayscale value, in which the processed image data indicates magnitude of the analog electrical signal.

公开(公告)号：US10424244B2

公开(公告)日：2019-09-24

申请号：US15404139

申请日：2017-01-11

Applicant: Apple Inc.

Inventor： Chengrui Le ,  Chaohao Wang ,  Kingsuk Brahma ,  Jie Won Ryu ,  Chin-Wei Lin ,  Rui Zhang

IPC: G09G3/3233

Abstract: Aspects of the subject technology relate to electronic devices with displays. A display may include an array of display pixels each having a drive transistor and an organic light-emitting diode. A pulse-width-modulated current may be provided to the organic light-emitting diode during each display frame to compensate for an on-bias compensation applied to the drive transistor between display frames. The pulse-width-modulated current may be provided with a pulse-width-modulation ratio that decreases over the course of each display frame. The decrease of the pulse-width-modulation ratio for each display frame may be determined based on a peak luminance for that display frame. The reduction in flicker provided by the pulse-width-modulated current may facilitate operation of the display with a reduced refresh rate, thereby reducing power consumption by the display.

公开(公告)号：US20190180672A1

公开(公告)日：2019-06-13

申请号：US16325260

申请日：2017-08-15

Applicant: Apple Inc.

Inventor： Ivan Knez ,  Cheuk Chi Lo ,  Akira Matsudaira ,  Chun-Yao Huang ,  Giovanni Carbone ,  Paolo Sacchetto ,  Chaohao Wang ,  Sheng Zhang ,  Adam Adjiwibawa

IPC: G09G3/20 ,  G09G5/391 ,  G09G5/36 ,  G09G5/397

Abstract: An electronic device may have a display and a gaze tracking system. The electronic device may display images on the display that have a higher resolution in a portion of the display that overlaps a gaze location than other portions of the display. Timing controller circuitry and column driver circuitry may include interpolation and filter circuitry. The interpolation and filter circuitry may be used to perform nearest neighbor interpolation and two-dimensional spatial filtering on low resolution image data. Display driver circuitry may be configured to load higher resolution data into selected portions of a display. The display driver circuitry may include low and high resolution image data buffers and configurable row driver circuitry. Block enable transistors may be included in a display to allow selected blocks of pixels to be loaded with high resolution image data.