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公开(公告)号：US10691235B2
公开(公告)日：2020-06-23
申请号：US14256849
申请日：2014-04-18
Applicant: Apple Inc.
Inventor： Weijun Yao , Wei Hsin Yao , Yingxuan Li , Hopil Bae , Ahmad Al-Dahle
Abstract: Integrated touch screens are provided including drive lines formed of grouped-together circuit elements of a thin film transistor layer and sense lines formed between a color filter layer and a material layer that modifies or generates light. The common electrodes (Vcom) in the TFT layer can be grouped together during a touch sensing operation to form drive lines. Sense lines can be formed on a separate layer dedicated to only touch hardware.
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42.发明申请公开(公告)号：US20190311680A1
公开(公告)日：2019-10-10
申请号：US16048217
申请日：2018-07-27
Applicant: Apple Inc.
Inventor： Kyung Hoae Koo , Weijun Yao , Yue Jack Chu , Kaige Sun
IPC: G09G3/3266
Abstract: Display artifacts, such as muras, may be perceptible on an electronic display when an electronic device includes a radio frequency transceiver that outputs electromagnetic waves during an emission period and a display panel that writes to display pixels during a refresh period. The electronic device may also include a controller that is coupled to the radio frequency transceiver and the display panel and facilitates the reduction and/or elimination of overlap between the emission periods and the refresh periods to decrease the appearance of display artifacts. In particular, the controller may execute instructions to determine the duration of the emission period and determine the duration of the blanking period that occurs between the refresh periods. Further, based on the determined blanking period and emission period durations, the controller may instruct the radio frequency transceiver to adjust the timing of the first emission period, instruct the display panel to adjust the timing of the refresh rate, or both to reduce overlap.
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公开(公告)号：US20190221177A1
公开(公告)日：2019-07-18
申请号：US16368394
申请日：2019-03-28
Applicant: Apple Inc.
Inventor： Jiayi Jin , Myung-Je Cho , Paolo Sacchetto , Weijun Yao
CPC classification number: G09G3/3607 , G09G3/20 , G09G2310/0232 , G09G2320/0285 , G09G2320/0626
Abstract: A display may have curved edges such as rounded corners. Pixels in the display may be controlled so that the active area of the display has the desired curved edge shape. In order to maximize the apparent smoothness of the curved edge, the display may include circuitry that dims some of the pixels based on their location relative to a spline for the curved edge. The display circuitry may include a multiplication circuit that receives image data as a first input and dimming factors from a gain table as a second input. The image data may include a brightness level for each pixel in the array of pixels. The multiplication circuit may multiply the brightness level for each pixel by its respective dimming factor. This modified image data may then be supplied to the imaging pixels using display driver circuitry.
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44.发明授权公开(公告)号：US10277119B2
公开(公告)日：2019-04-30
申请号：US15798193
申请日：2017-10-30
Applicant: Apple Inc.
Inventor： Weijun Yao , David A. Stronks , Hopil Bae , Kingsuk Brahma , Wei Hsin Yao , Yafei Bi , Yingxuan Li
IPC: G06F3/044 , H02M3/07 , G06F3/041 , G06F1/3234 , H01L23/64
Abstract: A charge pump that can be configured to operate in a first mode and a second mode is disclosed. The charge pump can comprise a charging capacitor coupled to a first node and configured to transfer a first DC voltage to the first node. The charge pump can also comprise a first output node and a second output node coupled to the first node. During the first mode, the first output node can be configured to output a second DC voltage based on the first DC voltage, and the second output node can be configured to output a third DC voltage based on the first DC voltage. During the second mode, the first output node can be configured to output the second DC voltage, and the second output node can be configured to output an AC voltage, the AC voltage being offset by the third DC voltage.
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公开(公告)号：US10209813B2
公开(公告)日：2019-02-19
申请号：US15039400
申请日：2014-09-30
Applicant: APPLE INC.
Inventor： Weijun Yao , Wei Hsin Yao , Yingxuan Li , Bingrui Yang , Marduke Yousefpor , Abbas Jamshidi-Roudbari , Ahmad Al-Dahle
Abstract: A self-capacitive touch sensor panel configured to have a portion of both the touch and display functionality integrated into a common layer is provided. The touch sensor panel includes a layer with circuit elements that can switchably operate as both touch circuitry and display circuitry such that during a touch mode of the device the circuit elements operate as touch circuitry and during a display mode of the device the circuit elements operate as display circuitry. The touch mode and display mode can be time multiplexed. By integrating the touch hardware and display hardware into common layers, savings in power, weight and thickness of the device can be realized.
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Patent Agency Ranking
公开(公告)号：US20190027114A1
公开(公告)日：2019-01-24
申请号：US15716708
申请日：2017-09-27
Applicant: Apple Inc.
Inventor： Yue Jack Chu , Christopher P. Tann , Arthur L. Spence , Brad W. Simeral , Yafei Bi , Jiayi Jin , Ruo-Gu Huang , Haifeng Li , Weijun Yao , Chaohao Wang
Abstract: In situations with reduced image changes, display panels, such as the ones disclosed herein, may reduce their power consumption by performing self-refresh cycles, in which they may display locally stored data in the display panel instead of retrieving it from an image buffer. Methods and circuitry for management of the self-refresh cycle may reduce jitter, luminance errors, and/or flickers that may be caused by untimely self-refresh cycles that may occur as a result of latency in the image buffer. In some implementations, the display panel may have a dedicated low latency input that notifies an arrival of an incoming image. In some implementations, the self-refresh cycles of the panel may be managed by a host or a buffer that is responsible for sending the images.
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公开(公告)号：US10043469B2
公开(公告)日：2018-08-07
申请号：US15708795
申请日：2017-09-19
Applicant: Apple Inc.
Inventor： Ahmad Al-Dahle , Yingxuan Li , Marduke Yousefpor , Weijun Yao
Abstract: Systems and method of performing touch and force sensing in an electronic device. The device includes a cover and an array of touch-sensor electrodes disposed below the cover. The first array of electrodes may be configured to sense a touch on the cover using a capacitive sensing scheme. The device also includes a force-sensor drive electrode disposed below the first array of electrodes and a force-sensor sense electrode disposed below the force-sensor drive electrode. The force-sensor drive and sense electrode may be configured to sense a force on the cover. The device also includes a shared drive circuit having an output that is operatively coupled to the array of touch-sensor electrodes and the force-sensor drive electrode.
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48.发明授权公开(公告)号：US10008172B2
公开(公告)日：2018-06-26
申请号：US14276146
申请日：2014-05-13
Applicant: APPLE INC.
Inventor： Yingxuan Li , Weijun Yao , Wei H. Yao , Kingsuk Brahma , Hyunwoo Nho
IPC: G09G3/36
CPC classification number: G09G3/3688 , G09G3/3648 , G09G3/3655 , G09G3/3696 , G09G2300/0426 , G09G2310/027 , G09G2310/0291 , G09G2320/0233 , G09G2320/0276 , G09G2320/029
Abstract: Devices and methods for reducing or eliminating image artifacts are provided. By way of example, a display panel includes a pixels including pixel electrodes configured to receive an image data signal, and common electrodes (VCOMs) configured to receive a common voltage signal. The display panel includes a source driver, which includes a first digital to analog converter (DAC) configured to generate a gamma voltage signal to provide a first adjustment to the image data signal, and a second DAC configured to generate an error correction voltage signal to provide a second adjustment to the image data signal. The second adjustment is configured to adjust the image data signal to compensate for an operational characteristic difference between row pixels and column pixels of the display panel. The source driver includes an output buffer to supply the image data signal to the pixel electrodes.
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49.发明授权公开(公告)号：US09806608B2
公开(公告)日：2017-10-31
申请号：US15043405
申请日：2016-02-12
Applicant: Apple Inc.
Inventor： Weijun Yao , David A. Stronks , Hopil Bae , Kingsuk Brahma , Wei Hsin Yao , Yafei Bi , Yingxuan Li
CPC classification number: H02M3/07 , G06F1/3262 , G06F3/041 , G06F3/0412 , G06F3/0416 , G06F3/044 , H01L23/642
Abstract: A charge pump that can be configured to operate in a first mode and a second mode is disclosed. The charge pump can comprise a charging capacitor coupled to a first node and configured to transfer a first DC voltage to the first node. The charge pump can also comprise a first output node and a second output node coupled to the first node. During the first mode, the first output node can be configured to output a second DC voltage based on the first DC voltage, and the second output node can be configured to output a third DC voltage based on the first DC voltage. During the second mode, the first output node can be configured to output the second DC voltage, and the second output node can be configured to output an AC voltage, the AC voltage being offset by the third DC voltage.
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公开(公告)号：US09690432B2
公开(公告)日：2017-06-27
申请号：US14059427
申请日：2013-10-21
Applicant: Apple Inc.
Inventor： Weijun Yao , Yingxuan Li , Ahmad Al-Dahle
CPC classification number: G06F3/044 , G06F3/0416
Abstract: Systems and processes for encoding and decoding touch signals output by a touch sensor are provided. In one example system, switching circuitry can be used to selectively couple each of the sense lines of a touch sensor to a positive terminal or a negative terminal of a sense amplifier based on the values of the elements of a matrix. The touch signals can be amplified and converted into digital form using a single sense amplifier and an ADC before being decoded using decoding circuitry. The decoding circuitry can decode the digital encoded touch signals by multiplying the digital encoded touch signals by each column of an inverse of the matrix used to encode the touch signals. The result of the decoding can be a set of signals that are representative of the touch signals output by the touch sensor.
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