公开(公告)号：US10380937B2

公开(公告)日：2019-08-13

申请号：US15246666

申请日：2016-08-25

Applicant: Apple Inc.

Inventor： Howard H. Tang ,  Paolo Sacchetto ,  Chaohao Wang ,  Szu-Hsien Lee ,  Patrick Bennett ,  Fenghua Zheng

IPC: G09G3/20 ,  G09G3/36

Abstract: The disclosure relates to systems and methods for reducing VCOM settling periods. A number of pixels is sub-divided into a plurality of regions. The pixels are configured to transmit light. A common voltage (VCOM) driving circuit is configured to drive a common electrode of the pixels. Moreover, each of a number of VCOM driving circuits includes a variable resistor configured to be driven to a resistance level based at least in part on which region of the plurality of regions includes an active pixel within the region. Furthermore, a resistance level is set and based at least in part on where the active pixel is located.

公开(公告)号：US10209551B2

公开(公告)日：2019-02-19

申请号：US15677267

申请日：2017-08-15

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Jesse A. Richmond ,  Mohammad B. Vahid Far ,  Tobias Jung ,  Jie Won Ryu ,  Hyunwoo Nho ,  Kingsuk Brahma ,  Sun-Il Chang ,  Junhua Tan ,  Marc Albrecht ,  Chih-Wei Yeh ,  Chaohao Wang

IPC: G02F1/1333 ,  G09G3/20 ,  G09G3/36 ,  G09G3/3233

Abstract: Devices, storage media, and methods for compensating for aging and temperature variations using dual-loop compensation are provided. The compensating for temperature and aging variations of one or more pixels of the display using a coarse scan loop updated at a faster rate. Compensation also includes compensating for aging variations of the one or more pixels of the display using a fine scan loop updated at a slower rate.

公开(公告)号：US10146359B2

公开(公告)日：2018-12-04

申请号：US15089432

申请日：2016-04-01

Applicant: Apple Inc.

Inventor： Howard Tang ,  Christoph H. Krah ,  Paolo Sacchetto ,  Chaohao Wang

IPC: G06F3/041 ,  G06F3/044 ,  G02F1/1333 ,  G09G3/00

Abstract: A system is disclosed. The system can comprise dynamic drive circuitry configured to drive a plurality of electrodes on a touch screen. The system can also comprise a switching circuit configured to selectively couple the dynamic drive circuitry to one or more of the plurality of electrodes. The system can also comprise a display circuitry configured to selectively update a plurality of display pixels on the touch screen. The dynamic drive circuitry can be configured to set its output based on which of the plurality of electrodes are selectively coupled to the first drive circuitry and which of the display pixels are updated by the display circuitry.

公开(公告)号：US09953613B2

公开(公告)日：2018-04-24

申请号：US14661723

申请日：2015-03-18

Applicant: APPLE INC.

Inventor： Paolo Sacchetto ,  David W. Lum ,  Christopher P. Tann ,  Guy Cote ,  Chaohao Wang ,  Sandro H. Pintz

IPC: G09G5/00

CPC classification number: G09G5/006 ,  G09G2330/021 ,  G09G2340/02 ,  G09G2340/0435 ,  G09G2350/00 ,  G09G2370/10

Abstract: Methods and devices employing circuitry for dynamically adjusting bandwidth control of a display interface are provided. The display interface or image content is dynamically adjusted to support both high-speed image data (e.g., 120 Hz image data) and lower-speed content (e.g., 60 Hz content). For example, in some embodiments, additional pixel pipelines and/or processing lanes may be activated during the rendering of high-speed image data, but not during the rendering of low-speed image data. Additionally or alternatively, high-speed image data, but not low-speed data, may be compressed to render high-speed content over an interface that supports only low-speed content.

公开(公告)号：US20180090102A1

公开(公告)日：2018-03-29

申请号：US15664940

申请日：2017-07-31

Applicant: Apple Inc.

Inventor： Mahesh B. Chappalli ,  Chaohao Wang ,  Guy Côté ,  Marc Albrecht

IPC: G09G5/10 ,  G09G5/00

CPC classification number: G09G5/10 ,  G09G3/3611 ,  G09G3/3614 ,  G09G5/003 ,  G09G5/363 ,  G09G2310/0254 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/0276 ,  G09G2320/041 ,  G09G2320/0646 ,  G09G2330/023 ,  G09G2340/0435 ,  G09G2360/144

Abstract: Systems and methods for improving displayed image quality of an electronic display including a display pixel and a display driver are provided. A display pipeline receives input image data that indicates target luminance of the display pixel when displaying an image frame on the electronic display; determines a first bit group in pixel response corrected image data by mapping a first bit group in the input image data based at least in part on a first pixel response correction look-up-table; determines a second bit group in the pixel response corrected image data by mapping a second bit group in the input image data based at least in part on a second pixel response correction look-up-table; and outputs the pixel response corrected image data to the display driver to enable the display driver to facilitate displaying the image frame by writing the display pixel based on the pixel response corrected image data.

公开(公告)号：US20180082631A1

公开(公告)日：2018-03-22

申请号：US15674208

申请日：2017-08-10

Applicant: Apple Inc.

Inventor： Sun Il Chang ,  Hung Sheng Lin ,  Hyunwoo Nho ,  Jie Won Ryu ,  Junhua Tan ,  Chih-Wei Yeh ,  Chaohao Wang ,  Paolo Sacchetto

IPC: G09G3/3225 ,  G09G3/36

CPC classification number: G09G3/3225 ,  G09G3/20 ,  G09G3/3648 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/041 ,  G09G2320/0646 ,  G09G2320/0693 ,  G09G2340/0435 ,  G09G2340/16 ,  G09G2360/16

Abstract: Systems, methods, and devices for adjusting image display on an electronic display by predicting a temperature change of the electronic display due to heat-producing components near the display or due to changes in content. An electronic device may include an electronic display and processing circuitry. The electronic display may include pixels with behaviors that vary with temperature. As such, the processing circuitry may generate image data to send to the electronic display and adjust the image data or vary an operation of the electronic display based at least in part on a predicted temperature effect on at least part of the active area of the electronic display. The processing circuitry may determine the predicted temperature effect at least in part due to a first heat producing component or changes in content of the image data.

公开(公告)号：US09830849B2

公开(公告)日：2017-11-28

申请号：US14617564

申请日：2015-02-09

Applicant: APPLE INC.

Inventor： Chaohao Wang ,  David S. Zalatimo ,  Lei Zhao ,  Christopher P. Tann ,  Paolo Sacchetto ,  Sandro H. Pintz ,  Yi Huang ,  Jun Qi

IPC: G09G3/36 ,  G09G3/20

CPC classification number: G09G3/2092 ,  G09G3/20 ,  G09G2310/0254 ,  G09G2310/04 ,  G09G2310/08 ,  G09G2320/0266 ,  G09G2340/0435

Abstract: One embodiment describes an electronic display that displays image frames with a first refresh rate or a second refresh rate, in which the second refresh rate is lower than the first refresh rate; a display driver that writes the image frames by applying voltage to a display panel; and a timing controller that receives first image data from an image source, in which the first image data describes a first image frame and a first desired refresh rate equal to the second fresh rate; and that instructs the display driver to apply a first set of voltage polarities to the display panel to display first image frame at the first refresh rate and to apply a second set of voltage polarities to the display the first image frame at the second refresh rate when polarity of inversion imbalance accumulated is equal to polarity of the first set of voltage polarities.

公开(公告)号：US09761188B2

公开(公告)日：2017-09-12

申请号：US14640931

申请日：2015-03-06

Applicant: APPLE INC.

Inventor： Fenghua Zheng ,  Howard H. Tang ,  James C. Aamold ,  Sandro H. Pintz ,  Chaohao Wang ,  Paolo Sacchetto

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3655 ,  G09G2320/0223 ,  G09G2320/029 ,  G09G2340/16

Abstract: Methods and systems for compensating for VCOM variations include determining a voltage change in pixels between frames to be displayed on an electronic display. Based on the determined voltage change, VCOM variation is calculated based on coupling the VCOM to one or more data lines of the electronic display. VCOM compensation is determined and applied to offset for the VCOM variation. Using the VCOM offset, subsequent pixel content for the one or more pixels is written using the compensated VCOM.

公开(公告)号：US09743036B2

公开(公告)日：2017-08-22

申请号：US14659723

申请日：2015-03-17

Applicant: APPLE INC.

Inventor： Christopher P. Tann ,  Chaohao Wang ,  David S. Zalatimo ,  Marc Albrecht ,  Paolo Sacchetto ,  Sandro H. Pintz ,  Satish S. Iyengar

IPC: H04N7/01 ,  G09G5/00 ,  G06F1/32

CPC classification number: H04N7/0127 ,  G06F1/3218 ,  G06F1/3265 ,  G09G5/001 ,  G09G2330/021 ,  H04N7/0115 ,  Y02D10/153

Abstract: Systems and methods for controlling operation of an electronic display are provided. One embodiment describes an electronic display, which includes a display driver that writes image frames to pixels of the electronic display with a first refresh rate or a second refresh rate; and a timing controller that receives a plurality of image frames from an image source, in which the plurality of image frames are displayed on the electronic display to play video content; detects a cadence with which the plurality of image frames are received from the image source; and, based at least in part on the cadence of the plurality of image frames, instructs the display driver to write each of the plurality of image frames either as a single image frame at the first refresh rate or an image frame at the first refresh rate followed by a repeat of the image frame at the second refresh rate.

公开(公告)号：US09653029B2

公开(公告)日：2017-05-16

申请号：US14558663

申请日：2014-12-02

Applicant: Apple Inc.

Inventor： Chaohao Wang ,  Szu-Hsien Lee ,  Paolo Sacchetto ,  Shih Chang Chang ,  Chun-Yao Huang ,  Paul S. Drzaic

IPC: G09G3/36 ,  G09G3/32

CPC classification number: G09G3/3611 ,  G09G3/32 ,  G09G2310/04 ,  G09G2320/0247 ,  G09G2320/103 ,  G09G2340/0435

Abstract: This application relates to methods and apparatus for refreshing a display device at various frequencies. Specifically, multiple areas of the display device can be refreshed concurrently at different frequencies. In this way, when static content is being displayed in certain areas of the display device, those certain areas can be refreshed at a lower rate than areas displaying dynamic content such as video or animation. By refreshing at lower rates, the energy consumed by the display device and subsystems associated with the display device can be reduced. Additionally, processes for reducing flicker when refreshing the display device at different refresh rates are disclosed herein.