公开(公告)号：US20200004378A1

公开(公告)日：2020-01-02

申请号：US16436756

申请日：2019-06-10

Applicant: Apple Inc.

Inventor： Anshi Liang ,  He Yi ,  Yang Xu ,  Paolo Sacchetto ,  Jun Li ,  Jingyu Huang ,  Marc Joseph DeVincentis ,  Yue Jack Chu

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/046

Abstract: Display-to-touch noise may be perceptible when a touch image generated during an active period of an electronic display of an electronic device is used to determine a touch indication on the display. The electronic device may include a display pixel layer including a plurality of display pixels that write display images to the display during a display active period and continue displaying the display image during a display blanking period. The electronic device may also include a touch sense layer including a plurality of touch sense pixels that facilitate generation of a first touch image during a first display active period and generation of a second touch image during a first display blanking period. The electronic device may further include a controller coupled to the display pixel layer and the touch sense layer that facilitates the reduction or elimination of display-to-touch interference. In particular, the controller may determine a first noise metric associated with touch images generated during the first display active period and a second noise metric associated with touch images generated during the first display blanking period. Further, the controller may instruct the touch sense layer to not generate touch images during a second display active period in response to the first noise metric being greater than a noise threshold and the second noise metric not being greater than the noise threshold.

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.

公开(公告)号：US20190122636A1

公开(公告)日：2019-04-25

申请号：US16146910

申请日：2018-09-28

Applicant: Apple Inc.

Inventor： Yingying Tang ,  Chaohao Wang ,  Sheng Zhang ,  Yunhui Hou ,  Paolo Sacchetto ,  Koorosh Aflatooni ,  Gokhan Avkarogullari ,  Guy Cote ,  Mahesh B. Chappalli ,  Peter F. Holland

IPC: G09G5/10 ,  G09G3/20

CPC classification number: G09G5/10 ,  G09G3/2007 ,  G09G3/3208 ,  G09G3/3225 ,  G09G3/3607 ,  G09G3/3648 ,  G09G2320/0242 ,  G09G2320/0252 ,  G09G2320/0285 ,  G09G2320/103 ,  G09G2340/16

Abstract: An electronic device is provided. The electronic device includes a display that is configured to show content that includes a plurality of frames. The plurality of frames includes a first frame that is associated with a pre-transition value. The plurality of frames also includes a second frame that is associated with a current frame value that corresponds to a first luminance. Additionally, the electronic device is configured to determine an overdriven current frame value corresponding to a second luminance that is greater than the first luminance. The electronic device is also configured to display the second frame using the overdriven current frame value.

公开(公告)号：US20190068002A1

公开(公告)日：2019-02-28

申请号：US15891210

申请日：2018-02-07

Applicant: Apple Inc.

Inventor： Anshi Liang ,  Yang Xu ,  Rui Zhang ,  Marc J. DeVincentis ,  Paolo Sacchetto

IPC: H02J50/60 ,  H02J50/80 ,  H02J50/10

Abstract: A wireless power system may have a wireless power transmitting device and a wireless power receiving device. The wireless power receiving device may have a display that operates at a frame rate. The wireless power transmitting device may transmit wireless power signals to the wireless power receiving device at an initial frequency. In response to receiving the wireless power signals or in response to a request sent by the wireless power transmitting device, the wireless power receiving device transmits information on the frame rate to the wireless power transmitting device. The wireless power transmitting device uses the initial frequency and the frame rate in determining a safe frequency to use in transmitting wireless signals to avoid or at least reduce interference with the display. The wireless power transmitting device then adjusts the wireless power transmission frequency from the initial frequency to the safe frequency.

公开(公告)号：US20180166032A1

公开(公告)日：2018-06-14

申请号：US15890517

申请日：2018-02-07

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

CPC classification number: G09G3/3614 ,  G09G2320/0204 ,  G09G2320/0247 ,  G09G2320/0257 ,  G09G2320/046 ,  G09G2340/0435 ,  G09G2360/16

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：US09984608B2

公开(公告)日：2018-05-29

申请号：US14986181

申请日：2015-12-31

Applicant: Apple Inc.

Inventor： Paolo Sacchetto ,  Christopher P. Tann ,  Taesung Kim ,  Sandro H. Pintz ,  Marc Albrecht ,  Chaohao Wang ,  David S. Zalatimo ,  Fenghua Zheng ,  Zhibing Ge

IPC: G09G3/20 ,  G09G3/36 ,  H04N1/60 ,  H04N9/73

CPC classification number: G09G3/20 ,  G09G2310/0254 ,  G09G2310/063 ,  G09G2310/08 ,  G09G2320/0204 ,  G09G2340/0435

Abstract: System and method for improving displayed image quality of an electronic display that displays a first image frame by applying a first voltage to a display pixel and a second image frame directly before the first image frame by applying a second voltage to the display pixel. A display pipeline is communicatively coupled to the electronic display and receives first image data corresponding with the first image frame, where the image data includes a first grayscale value corresponding with the display pixel. Additionally the display pipeline determines an inversion balancing grayscale offset based at least in part on the first grayscale value when polarity of the first voltage and polarity of the second voltage are the same and determines magnitude of the first voltage by applying the inversion balancing grayscale offset to the first grayscale value to reduce likelihood of a perceivable luminance spike when displaying the first image frame.

公开(公告)号：US09952642B2

公开(公告)日：2018-04-24

申请号：US14500646

申请日：2014-09-29

Applicant: APPLE INC.

Inventor： Chaohao Wang ,  Louis Luh ,  Jun Qi ,  Cheng Chen ,  Jun Jiang ,  Paolo Sacchetto ,  Marc Albrecht

IPC: G09G3/20 ,  G06F1/32 ,  G09G5/00

CPC classification number: G06F1/32 ,  G09G5/003 ,  G09G2320/0247 ,  G09G2330/021 ,  G09G2340/0435 ,  G09G2360/16

Abstract: Systems and methods for operating a display by dynamically determining a refresh rate for the display. In certain implementations, a processor determines a number of pixels having medium grayscale levels from a histogram for the image. If the number does not exceed a threshold, the processor sets a refresh rate for the display to a first refresh rate. In certain implementations, if the number exceeds a threshold, the processor may set the refresh rate for the display to a second refresh rate. Moreover, the first refresh rate may be lower than the second threshold. In some implementations, the image may be analyzed by subdividing the image into blocks and determining a refresh rate based on grayscale levels or distributions in the blocks. Based on the analysis of the blocks, a corresponding refresh rate may be selected.

公开(公告)号：US20180082634A1

公开(公告)日：2018-03-22

申请号：US15701056

申请日：2017-09-11

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

CPC classification number: G09G3/3233 ,  G09G3/3275 ,  G09G2300/0861 ,  G09G2310/0262 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/0693 ,  G09G2330/02 ,  G09G2330/12 ,  G09G2340/16 ,  G09G2360/18

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：US20170243548A1

公开(公告)日：2017-08-24

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 ,  G09G3/36 ,  G09G3/3258

CPC classification number: G09G3/20 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/0626 ,  G09G2320/0693 ,  G09G2340/0435 ,  G09G2360/16

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：US09599865B2

公开(公告)日：2017-03-21

申请号：US14702556

申请日：2015-05-01

Applicant: Apple Inc.

Inventor： Zhibing Ge ,  Chaohao Wang ,  Cheng Chen ,  Kyung Wook Kim ,  Ming-Chin Hung ,  Paolo Sacchetto ,  Shih Chang Chang ,  Shih-Chyuan Fan Jiang ,  Shang-Chih Lin

IPC: G06F3/041 ,  G02F1/1343 ,  G06F3/147 ,  G02F1/1368 ,  G02F1/1335 ,  G02F1/1333

CPC classification number: G02F1/134309 ,  G02F1/133514 ,  G02F1/1343 ,  G02F1/13439 ,  G02F1/1368 ,  G02F2001/133357 ,  G02F2001/134372 ,  G06F3/147

Abstract: A display may have upper and lower display layers. A layer of liquid crystal material may be interposed between the upper and lower display layers. The display layers may have substrates. A thin-film transistor layer may have a layer of thin-film transistor structures on a substrate such as a clear glass layer. A planarization layer may be formed on the thin-film transistor structures. A transparent conductive layer may be formed on the planarization layer. The display may have a dielectric layer on the transparent conductive layer. Pixels may be formed in the display layers. The pixels may include pixel electrodes having fingers. The fingers may be formed on the dielectric layer. Trenches in the dielectric layer may be formed between the fingers. The trenches may extend to the transparent conductive layer or may be formed only partway into the dielectric layer.