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公开(公告)号:US20210150950A1
公开(公告)日:2021-05-20
申请号:US16644932
申请日:2018-08-31
申请人: Junhua TAN , Chin-Wei LIN , Hung Sheng LIN , Hyunsoo KIM , Hyunwoo NHO , Injae HWANG , Jesse A. RICHMOND , Jie Won RYU , Kavinaath MURUGAN , Kingsuk BRAHMA , Shengkui GAO , Shiping SHEN , Sun-Il CHANG , Myung-Je CHO , Yafei BI , Myungjoon CHOI , Chaohao WANG , Weichuan YAO , Apple Inc.
发明人: Chin-Wei Lin , Hung Sheng Lin , Hyunsoo Kim , Hyunwoo Nho , Injae Hwang , Jesse A. Richmond , Jie Won Ryu , Junhua Tan , Kavinaath Murugan , Kingsuk Brahma , Shengkui Gao , Shiping Shen , Sun-Il Chang , Myung-Je Cho , Yafei Bi
IPC分类号: G09G3/00
摘要: Electronic devices and methods for compensating for aging or other effects in a display during a non-transmitting state (off state) of the display. Sensing may include emissive element sensing of the display and/or thin film transistor sensing of the display. Compensating for the effects may preserve or increase a uniformity of transmission of the display.
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公开(公告)号:US20210082349A1
公开(公告)日:2021-03-18
申请号:US16603189
申请日:2018-03-27
申请人: Apple Inc.
发明人: Junhua Tan , Kingsuk Brahma , Jie Won Ryu , Shengkui Gao , Shiping Shen , Majid Gharghi , Hyunwoo Nho , Injae Hwang , Kavinaath Murugan , Sun-II Chang , Chin-Wei Lin , Hyunsoo Kim , Rui Zhang , Jesse Aaron Richmond , Yun Wang , Hung Sheng Lin
IPC分类号: G09G3/3258 , G09G3/3233
摘要: An electronic device comprises a controller. The controller is configured to provide a first signal to a display of the electronic device to turn off the display. The controller is also configured to provide a second signal to the display to alter a gate source voltage of a drive transistor coupled to a light emitting diode (LED) of a pixel of the display while the display is turned off.
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公开(公告)号:US10950182B2
公开(公告)日:2021-03-16
申请号:US16567972
申请日:2019-09-11
申请人: Apple Inc.
发明人: Junhua Tan , Kingsuk Brahma , Jie Won Ryu , Shengkui Gao , Shiping Shen , Majid Gharghi , Hyunwoo Nho , Injae Hwang , Kavinaath Murugan , Sun-Il Chang , Chin-Wei Lin , Hyunsoo Kim , Rui Zhang , Jesse Aaron Richmond , Yun Wang , Hung Sheng Lin , Alex H. Pai , Chaohao Wang , Wei H. Yao
IPC分类号: G09G3/3283 , G09G3/3241 , G09G3/3258 , G09G3/3291
摘要: The present disclosure relates generally to systems and methods that may reduce a reduction in visual artifacts related to hysteresis of a light emitting diode (LED) electronic display. In one example, an electronic device may include a controller. The controller is may provide a signal to a pixel of a display of the electronic device while at least a portion of the display is turned off. The signal may include a first current and a second current. The first current may be designed to increase an ambient temperature corresponding to the pixel. The second current may be generated as part of an active panel conditioning operation. By applying the first current and the second current, hysteresis settling times from the pixel may improve, therefore improving speeds of sensing and compensation operations of the electronic device.
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公开(公告)号:US10755618B2
公开(公告)日:2020-08-25
申请号:US16389899
申请日:2019-04-19
申请人: Apple Inc.
发明人: Hung Sheng Lin , Shengkui Gao , Hyunwoo Nho , Chin-Wei Lin , Mohammad B. Vahid Far , Jie Won Ryu , Kingsuk Brahma , Junhua Tan , Sun-Il Chang , Shinya Ono , Jesse Aaron Richmond , Yafei Bi , Derek K. Shaeffer , Myungjoon Choi , Shiping Shen
IPC分类号: G09G3/00
摘要: Systems and methods are provided for differential sensing (DS), difference-differential sensing (DDS), correlated double sampling (CDS), correlated-correlated double sampling (CDS-CDS) and/or programmable capacitor matching to reduce display panel sensing noise. An electronic device may include one or more processors that generate image data according to sensing operations. The one or more processors may reference a sensing pattern as part of sensing operations. Applying test sensing signals based on the sensing pattern may help reduce error associated with sensing operations.
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公开(公告)号:US10565923B2
公开(公告)日:2020-02-18
申请号:US15700971
申请日:2017-09-11
申请人: Apple Inc.
发明人: 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分类号: G09G3/20 , G09G3/3233 , G09G3/36
摘要: 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:US20180090042A1
公开(公告)日:2018-03-29
申请号:US15694373
申请日:2017-09-01
申请人: Apple Inc.
发明人: Hung Sheng Lin , Hyunwoo Nho , Shengkui Gao , Jesse A. Richmond , Jie Won Ryu , Junhua Tan , Kingsuk Brahma , Mohammad B. Vahid Far , Sun-Il Chang , Yafei Bi
CPC分类号: G09G3/006 , G06F3/041 , G09G3/20 , G09G3/2096 , G09G3/3225 , G09G2300/0413 , G09G2310/0291 , G09G2320/0295 , G09G2320/041 , G09G2320/043 , G09G2330/06 , G09G2330/12
摘要: Electronic displays, systems, and methods that perform display panel sensing are provided. An electronic device may include processing circuitry that generates image data based at least in part on display panel sensing feedback and an electronic display. The electronic display may display the image data on pixels coupled to one of several sense lines. There may be an odd number of sense lines with common electrical characteristics. The electronic display may obtain display panel sense feedback at least in part by differentially sensing each one of the sense lines with sense lines with common electrical characteristics with another one of the sense lines the common electrical characteristics.
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公开(公告)号:US11756505B2
公开(公告)日:2023-09-12
申请号:US17217827
申请日:2021-03-30
申请人: Apple Inc.
发明人: Yang Xu , Jie Won Ryu , Kingsuk Brahma , Koorosh Aflatooni , Marc Joseph DeVincentis , Mohammad Ali Jangda , Paolo Sacchetto , Shengkui Gao , Sinan Alousi , Yafei Bi , Chun Lu
IPC分类号: G09G5/10
CPC分类号: G09G5/10 , G09G2320/0233 , G09G2320/0633 , G09G2340/16 , G09G2360/141
摘要: Systems, methods, and devices are provided for providing intra-frame luminance scaling to avoid drawing excessive power while still providing exceptional brightness. An instantaneous average pixel luminance of an electronic display may be determined. The instantaneous average pixel luminance may correspond to an amount of light currently being emitted by the electronic display due to a previous image frame and a current image frame. Based at least in part on the instantaneous average pixel luminance, the luminance of a subset of pixels of image data of the current image frame may be adjusted, thereby allowing the electronic display to operate at a relatively high brightness level without exceeding a power limit.
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公开(公告)号:US11380231B2
公开(公告)日:2022-07-05
申请号:US16644932
申请日:2018-08-31
申请人: Apple Inc.
发明人: Chin-Wei Lin , Hung Sheng Lin , Hyunsoo Kim , Hyunwoo Nho , Injae Hwang , Jesse A. Richmond , Jie Won Ryu , Junhua Tan , Kavinaath Murugan , Kingsuk Brahma , Shengkui Gao , Shiping Shen , Sun-Il Chang , Myung-Je Cho , Yafei Bi , Myungjoon Choi , Weichuan Yao , Chaohao Wang
IPC分类号: G09G3/00 , G09G3/3208
摘要: Electronic devices and methods for compensating for aging or other effects in a display during a non-transmitting state (off state) of the display. Sensing may include emissive element sensing of the display and/or thin film transistor sensing of the display. Compensating for the effects may preserve or increase a uniformity of transmission of the display.
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公开(公告)号:US11302264B2
公开(公告)日:2022-04-12
申请号:US16510755
申请日:2019-07-12
申请人: Apple Inc.
发明人: Shengkui Gao , Marc Joseph DeVincentis , Yue Jack Chu , Sinan Alousi , Mohammad Hajirostam , Mohammad Ali Jangda , Koorosh Aflatooni , Pierre-Yves Emelie , Yafei Bi , Paolo Sacchetto , Kasra Omid-Zohoor
IPC分类号: G09G3/3291 , G09G3/3233 , G09G3/36 , H01L27/32
摘要: A display device may include rows of pixels that display image data on a display and a circuit. The circuit may receive pixel data value of image data for a pixel in a first row of the rows of pixels, determine a weight factor to apply to the pixel data value based on a position of the first row with respect to the other rows, such that each row is associated with a current-resistance (IR) drop across the display. The weight factor is determined based on a respective IR drop associated with the first row. The circuit may also generate a weighted pixel data value based on the weight factor and the pixel data value and send the weighted pixel data value to a display driver circuit that renders the image data via the display.
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公开(公告)号:US11158259B2
公开(公告)日:2021-10-26
申请号:US17088263
申请日:2020-11-03
申请人: Apple Inc.
发明人: 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分类号: G09G3/3233 , G09G3/3275
摘要: 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.
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