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.

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.

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.

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

IPC: G09G3/36 ,  G06F3/041

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.

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

IPC: G06F3/044 ,  G06F3/041

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.

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。

公开(公告)号：US12062313B2

公开(公告)日：2024-08-13

申请号：US18296937

申请日：2023-04-06

Applicant: Apple Inc.

Inventor： Jie Won Ryu ,  Kingsuk Brahma ,  Qing Li ,  Shawn P Hurley ,  Ce Zhang ,  Warren S Rieutort-Louis ,  Feng Wen ,  Marc J DeVincentis ,  Zhe Hua ,  Hyunwoo Nho

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2340/0435

Abstract: This disclosure is directed towards systems and methods of power saving in electronic displays based on changing clock signal frequencies supplied to the gate-in-panel (GIP) circuitry during extended blanking modes of the electronic display. The display driver circuitry of the display may reduce and/or halt clock signal frequencies sent to GIP circuitry in the display, to reduce power output during extended blanking modes of the electronic display.

公开(公告)号：US20240096275A1

公开(公告)日：2024-03-21

申请号：US17933457

申请日：2022-09-19

Applicant: APPLE INC.

Inventor： Shubham A. Gandhi ,  Jonathan H. Beck ,  Koorosh Aflatooni ,  Mohammad Ali Jangda ,  Graeme M. Williams ,  Kingsuk Brahma ,  Snehal T. Jariwala ,  Salman Kabir ,  Josiah Smith

IPC: G09G3/3225 ,  G09G3/32 ,  G09G3/36

CPC classification number: G09G3/3225 ,  G09G3/32 ,  G09G3/3648 ,  G09G2320/0626 ,  G09G2320/0666 ,  G09G2320/0673 ,  G09G2320/0693 ,  G09G2330/021

Abstract: A electronic display device designed to calibrate brightness levels in a flat-panel display by using adjacent code calibration for a variable electroluminescence voltage supply in the flat-panel display.

公开(公告)号：US20240038175A1

公开(公告)日：2024-02-01

申请号：US18215647

申请日：2023-06-28

Applicant: Apple Inc.

Inventor： Kingsuk Brahma ,  Jie Won Ryu ,  Satish S. Iyengar ,  Yue Jack Chu ,  Jongyup Lim

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G2320/0209

Abstract: Systems and methods are described here to compensate for crosstalk (e.g., coupling distortions) that may be caused by a fanout overlaid or otherwise affecting signals transmitted within an active area of an electronic display. The systems and methods may be based on buffered previous image data. Technical effects associated with compensating for the crosstalk may include improved display of image frames since some image artifacts are mitigated and/or made unperceivable or eliminated.

公开(公告)号：US20240013692A1

公开(公告)日：2024-01-11

申请号：US18212710

申请日：2023-06-21

Applicant: Apple Inc.

Inventor： Jie Won Ryu ,  Ardra Singh ,  Arthur L. Spence ,  Christopher P. Tann ,  Chun Lu ,  Daniel J. Drusch ,  Hyunwoo Nho ,  Jongyup Lim ,  Kingsuk Brahma ,  Marc J. DeVincentis ,  Mohammad Ali Jangda ,  Paolo Sacchetto ,  Peter F. Holland ,  Shawn P. Hurley ,  Wei H. Yao ,  Yue Jack Chu ,  Zhe Hua

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2330/021 ,  G09G2360/16 ,  G09G2320/103

Abstract: To reduce overall power consumption for an electronic display power management integrated circuit (PMIC), one of multiple electric power converters and/or electric power regulators may be selected based on an electrical load (e.g., due to the total brightness of the content displayed) on the electronic display at a given moment. In some embodiments, the PMIC may include a less efficient heavy load converter designed with high-current handling capability and a more efficient light load (e.g., low current) converter with lower current handling capability. A controller may dynamically select between the converters depending on a present load or an expected load on the electronic display.