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公开(公告)号：US20180342193A1
公开(公告)日：2018-11-29
申请号：US15700971
申请日：2017-09-11
Applicant: Apple Inc.
Inventor： Shiping Shen , Derek K. Shaeffer , Baris Cagdaser , Hyunwoo Nho , Kingsuk Brahma , Hung Sheng Lin , Injae Hwang , Jie Won Ryu , Hyunsoo Kim , Junhua Tan , Rui Zhang , Shengkui Gao , Mohammad B. Vahid Far , Jesse A. Richmond , Sun-Il Chang
IPC: G09G3/20 , G09G3/3233 , G09G3/36
CPC classification number: G09G3/2092 , G09G3/006 , G09G3/20 , G09G3/3233 , G09G3/3648 , G09G2320/0209 , G09G2320/0219 , G09G2320/0233 , G09G2320/0285 , G09G2320/0295 , G09G2320/0693 , G09G2330/021 , G09G2330/06 , G09G2330/12
Abstract: Electronic devices and methods for compensating for noise in a display that includes sensing a current in a sensing channel of the display. Compensating for the noise also includes sensing an observation current from noise in an observation channel of the display and scaling the observation current to generate a scaled observation current. The scaled observation current is subtracted from the sense current to generate a compensated output. The compensated output is used to drive compensation operations of the display based at least in part on the compensated output to reduce effects of the noise.
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公开(公告)号：US20180082635A1
公开(公告)日：2018-03-22
申请号：US15702443
申请日：2017-09-12
Applicant: Apple Inc.
Inventor： Jesse Aaron Richmond , Mohammad B. Vahid Far , Yafei Bi , Kingsuk Brahma
IPC: G09G3/3233 , G09G3/00 , G09G3/3291 , H03F3/26 , G09G3/20
CPC classification number: G09G3/3233 , G09G3/006 , G09G3/2003 , G09G3/3291 , G09G2300/0809 , G09G2300/0819 , G09G2300/0842 , G09G2310/027 , G09G2320/0285 , G09G2320/0295 , G09G2320/045 , H03F3/265
Abstract: An electronic device includes a display panel. The display panel includes a plurality of pixels, each of which includes a driving thin-film-transistor (TFT) configured to receive driving data related to the operation of a respective pixel and a light-emitting diode configured to emit light based on the driving data provided to the TFT. The display panel also includes compensation circuitry configured to generate offset data from compressed offset data and apply the offset data to the pixel data to generate the driving data.
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公开(公告)号：US20180082621A1
公开(公告)日：2018-03-22
申请号：US15698262
申请日：2017-09-07
Applicant: Apple Inc.
Inventor： Hung Sheng Lin , Shengkui Gao , Hyunwoo Nho , Chin-Wei Lin , Mohammad B. Vahid Far , Jie Won Ryu , Kingsuk Brahma , Junhua Tan , Sun-II Chang , Shinya Ono , Jesse A. Richmond , Yafei Bi , Derek K. Shaeffer
IPC: G09G3/00
CPC classification number: G09G3/006 , G09G3/20 , G09G3/2092 , G09G2310/0291 , G09G2320/0209 , G09G2320/0219 , G09G2320/029 , G09G2320/041 , G09G2320/043 , G09G2320/0693 , G09G2330/06 , G09G2330/10 , G09G2330/12
Abstract: Systems and methods are provided for differential sensing (DS), difference-differential sensing (DDS), correlated double sampling (CDS), and/or programmable capacitor matching to reduce display panel sensing noise. An electronic device may include one or more processors and an electronic display. The one or more processors may generate image data and adjust the image data based at least in part on display sensing feedback. The electronic display may employ sensing circuitry that obtains the display sensing feedback at least in part by applying test data to a pixel of a column of an active area of the display and differentially senses an electrical value of the pixel in comparison to a reference signal from a different column. This reference signal may provide a common mode noise reference, which is removed by the differential sensing and thereby enhances a quality of the sensed electrical value of the pixel.
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公开(公告)号：US09734783B2
公开(公告)日：2017-08-15
申请号：US14864136
申请日：2015-09-24
Applicant: Apple Inc.
Inventor： Cheng-Ho Yu , Keitaro Yamashita , Ting-Kuo Chang , Yun Wang , Hopil Bae , Kingsuk Brahma
CPC classification number: G09G3/3648 , G06F3/0412 , G06F3/0416 , G09G3/3677 , G09G2300/0452 , G09G2300/0871 , G09G2310/0289 , G09G2310/061 , G09G2310/08 , G09G2330/021 , G09G2354/00
Abstract: A touch screen display may include gate line driver circuitry coupled to a display pixel array. The display may be provided with intra-frame pausing (IFP) capabilities, where touch or other operations may be performed during one or more intra-frame blanking intervals. In one suitable arrangement, a gate driver may be operable in a high impedance mode, where the output of the gate driver is left floating during touch or IFP intervals. In another suitable arrangement, the gate driver may be operable in an IFP reduced stress mode, where a digital pass gate in the gate driver is deactivated during IFP intervals. In yet another suitable arrangement, the gate driver may be operable in an all-gate-high (AGH) power-down mode, where the output of each gate driver in the driver circuitry is driven high in parallel when the displayed is being powered off. These arrangements may be implemented in any suitable combination.
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公开(公告)号：US20170090612A1
公开(公告)日：2017-03-30
申请号：US14870815
申请日：2015-09-30
Applicant: Apple Inc.
Inventor： Taif A. Syed , Kingsuk Brahma , Christoph H. Krah
CPC classification number: G06F3/044 , G06F3/0412 , G06F2203/04101
Abstract: A method for pre-charging a display panel may include simultaneously charging the display panel that displays image data and receives one or more touch inputs via a first voltage source and a capacitor that provides a first voltage to the display panel via a second voltage source. The first voltage is associated with receiving the one or more touch inputs, and the display panel and the capacitor are simultaneously charged for a first amount of time. The method may then include charging the display panel via the capacitor after the first amount of time for a second amount of time and charging the display panel via the second voltage source after the second amount of time for a third amount of time.
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Patent Agency Ranking
公开(公告)号：US20140139415A1
公开(公告)日：2014-05-22
申请号：US14081834
申请日：2013-11-15
Applicant: APPLE INC.
Inventor： David A. Stronks , Hopil Bae , Kingsuk Brahma , Sang Y. Youn
IPC: G09G3/36
CPC classification number: G09G3/3696 , G09G3/3648 , G09G2310/0248 , G09G2330/021
Abstract: Systems and methods for efficiently generating display driver timing signals are provided. In one example, display driver circuitry of an electronic display may provide a negative voltage from a negative voltage supply to display control circuitry during a first period and may provide a positive voltage from a positive voltage supply to the display control circuitry during a second period. After providing the negative voltage during the first period but before providing the positive voltage during the second period, the display driver circuitry may precharge the capacitance of the display control circuitry to ground. In this way, the positive voltage supply substantially does not supply charge to raise the voltage on the capacitance of the display control circuitry from the negative voltage to ground.
Abstract translation: 提供了有效地产生显示驱动器定时信号的系统和方法。 在一个示例中，电子显示器的显示驱动器电路可以在第一时段期间从负电压电源提供负电压到显示控制电路，并且可以在第二时段期间从正电压电源向显示控制电路提供正电压。 在第一时段内提供负电压之后但在第二周期期间提供正电压之前，显示驱动器电路可以将显示控制电路的电容预充电到地。 以这种方式，正电压基本上不提供电荷以将显示控制电路的电容的电压从负电压提升到地。
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公开(公告)号：US20240203335A1
公开(公告)日：2024-06-20
申请号：US18540613
申请日：2023-12-14
Applicant: Apple Inc.
Inventor： Mario Miscuglio , Yang Xu , Snehal T. Jariwala , Yi Qiao , Jean-Pierre S. Guillou , Jenny Hu , Ming Xu , Wanqing Xin , Zuo Xia , Xin Zheng , Jie Won Ryu , Graeme M. Williams , Kingsuk Brahma
IPC: G09G3/3208
CPC classification number: G09G3/3208 , G09G2320/0233 , G09G2320/0686 , G09G2330/021 , G09G2340/00
Abstract: Systems and methods described herein may utilize a non-linear scaling relationship to scale brightness of selective portions of the display in a manner that reduces or eliminates perceivable banding effects. By non-linearly controlling changes in brightness of the display, a viewer may perceive a more uniform, linear dimming towards the relatively dimmer region without perceiving banding, leading to improved user experience when viewing the electronic display.
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公开(公告)号：US11810494B2
公开(公告)日：2023-11-07
申请号：US17820190
申请日：2022-08-16
Applicant: Apple Inc.
Inventor： Jie Won Ryu , ByoungSuk Kim , David S Zalatimo , Graeme M Williams , Hyunsoo Kim , Hyunwoo Nho , Jesse R Manders , Kingsuk Brahma , Li-Xuan Chuo , Sachiko Oda , Shatam Agarwal , Yao Shi
CPC classification number: G09G3/2044 , H03M1/1019 , G09G2310/027 , G09G2320/0276
Abstract: An electronic device may include an electronic display having multiple display pixels to display an image based on analog voltage signals. The electronic device may also include optical calibration circuitry to generate digital-to-analog converter (DAC) data based on image data associated with the image and dither circuitry to reduce a bit-depth of the DAC data, generating dithered DAC data. Additionally, the electronic device may include a gamma generator having one or more DACs to generate the analog voltage signals based on the dithered DAC data, which may instruct the gamma generator to generate the analog voltage signals indicative of the image data.
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公开(公告)号：US20230087480A1
公开(公告)日：2023-03-23
申请号：US17820190
申请日：2022-08-16
Applicant: Apple Inc.
Inventor： Jie Won Ryu , ByoungSuk Kim , David S. Zalatimo , Graeme M. Williams , Hyunsoo Kim , Hyunwoo Nho , Jesse R. Manders , Kingsuk Brahma , Li-Xuan Chuo , Sachiko Oda , Shatam Agarwal , Yao Shi
Abstract: An electronic device may include an electronic display having multiple display pixels to display an image based on analog voltage signals. The electronic device may also include optical calibration circuitry to generate digital-to-analog converter (DAC) data based on image data associated with the image and dither circuitry to reduce a bit-depth of the DAC data, generating dithered DAC data. Additionally, the electronic device may include a gamma generator having one or more DACs to generate the analog voltage signals based on the dithered DAC data, which may instruct the gamma generator to generate the analog voltage signals indicative of the image data.
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公开(公告)号：US11205363B2
公开(公告)日：2021-12-21
申请号：US17016282
申请日：2020-09-09
Applicant: Apple Inc.
Inventor： Myungjoon Choi , Kingsuk Brahma , Li-Xuan Chuo , Mohammad Ali Jangda , Hyunsoo Kim , Hyunwoo Nho , Alex H. Pai , Jesse Aaron Richmond , Jie Won Ryu , Shiping Shen , Chaohao Wang
Abstract: An electronic display may include pixel circuitry to display an image based on image data compensated for voltage variations within the pixel circuitry. Image processing circuitry may generate a compensation value to compensate the image data for cross-talk (e.g., electromagnetic coupling between an electrode of touch sensor circuitry and an electrode of the pixel circuitry) that may cause the voltage variations. Additionally or alternatively, the image processing circuitry may generate another compensation value to compensate the image data for another cross-talk (e.g., electromagnetic coupling between two electrodes of the pixel circuitry). The image processing circuitry may generate the compensated image data based on the first compensation value and/or the second compensation value.
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