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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：US09613556B2
公开(公告)日：2017-04-04
申请号：US14474786
申请日：2014-09-02
Applicant: Apple Inc.
Inventor： Hung Sheng Lin , Sang Y. Youn , Hopil Bae , Mohammad Ali Jangda , Ahmad Al-Dahle , Wei H. Yao
IPC: G09G5/00 , G09G3/20 , H04B15/00 , H04W4/00 , G09G3/3225 , G09G3/3266 , G09G3/36
CPC classification number: G09G3/20 , G09G3/3225 , G09G3/3266 , G09G3/3648 , G09G3/3674 , G09G2310/0267 , G09G2330/06 , G09G2340/0435 , H04B15/00 , H04W4/80
Abstract: An electronic device may be provided with wireless circuitry and a display. A display driver integrated circuit in the display may have a spectrum analyzer circuit. An antenna may monitor for wireless signals. The display driver integrated circuit may use the spectrum analyzer circuit to analyze the wireless signals and determine whether there is a potential for visible display artifacts. In the presence of conditions that can lead to display artifacts, the display driver integrated circuit may adjust a gate driver control signal. Adjustments to the gate driver control signal may be made using adjustable signal dividers. The adjustments to the gate driver control signal eliminate the visible display artifacts.
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公开(公告)号：US20160063907A1
公开(公告)日：2016-03-03
申请号：US14474786
申请日：2014-09-02
Applicant: Apple Inc.
Inventor： Hung Sheng Lin , Sang Y. Youn , Hopil Bae , Mohammad Ali Jangda , Ahmad Al-Dahle , Wei H. Yao
CPC classification number: G09G3/20 , G09G3/3225 , G09G3/3266 , G09G3/3648 , G09G3/3674 , G09G2310/0267 , G09G2330/06 , G09G2340/0435 , H04B15/00 , H04W4/80
Abstract: An electronic device may be provided with wireless circuitry and a display. A display driver integrated circuit in the display may have a spectrum analyzer circuit. An antenna may monitor for wireless signals. The display driver integrated circuit may use the spectrum analyzer circuit to analyze the wireless signals and determine whether there is a potential for visible display artifacts. In the presence of conditions that can lead to display artifacts, the display driver integrated circuit may adjust a gate driver control signal. Adjustments to the gate driver control signal may be made using adjustable signal dividers. The adjustments to the gate driver control signal eliminate the visible display artifacts.
Abstract translation: 电子设备可以设置有无线电路和显示器。 显示器中的显示驱动器集成电路可以具有频谱分析器电路。 天线可以监控无线信号。 显示驱动器集成电路可以使用频谱分析器电路来分析无线信号并确定是否存在可见的显示伪影的可能性。 在可能导致显示伪像的条件的存在下，显示驱动器集成电路可以调整栅极驱动器控制信号。 可以使用可调信号分配器对门驱动器控制信号进行调整。 对栅极驱动器控制信号的调整消除了可见的显示伪影。
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公开(公告)号：US09269321B2
公开(公告)日：2016-02-23
申请号：US14157858
申请日：2014-01-17
Applicant: Apple Inc.
Inventor： Abbas Jamshidi-Roudbari , Ting-Kuo Chang , Hopil Bae , Cheng-Ho Yu , Shih Chang Chang
IPC: G09G3/36
CPC classification number: G09G3/3688 , G09G2310/027 , G09G2310/0297
Abstract: An electronic display system has a light transmissive panel, a region of display elements on the panel, and source lines coupled to the display elements. A demultiplexer circuit has multiple groups of pass gates. Each pass gate has a pair of complimentary on-panel transistors, and the signal outputs of each group are connected to a respective group of the source lines. A display driver integrated circuit (IC) receives video data and timing control signals. A signal input of each group of pass gates is connected to a respective output pin of the driver IC. The display driver IC provides digital timing control signals to control the pass gates of the demultiplexer circuit. Other embodiments are also described.
Abstract translation: 电子显示系统具有透光面板，面板上的显示元件区域和耦合到显示元件的源极线。 解复用器电路具有多组通路。 每个通孔具有一对互补的面板上的晶体管，并且每个组的信号输出连接到相应的源极线组。 显示驱动器集成电路（IC）接收视频数据和定时控制信号。 每组通路门的信号输入端连接到驱动器IC的相应输出引脚。 显示驱动器IC提供数字定时控制信号以控制解复用器电路的通过门。 还描述了其它实施例。
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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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Patent Agency Ranking
106.发明申请公开(公告)号：US20130328797A1
公开(公告)日：2013-12-12
申请号：US13664086
申请日：2012-10-30
Applicant: APPLE INC.
Inventor： Ahmad Al-Dahle , Hopil Bae
IPC: G06F3/041
CPC classification number: G06F3/0416 , G06F1/3262 , G06F1/3265 , G09G3/3648 , G09G2330/021 , G09G2340/0435 , Y02D10/153
Abstract: Methods and devices employing circuitry for reducing power usage of a touch-sensitive display are provided. In one example, a method for reducing power usage of a touch-sensitive display may include receiving power for the display of an electronic device. The method may also include powering a touch subsystem and a display subsystem of the display. The method may include, in a standard display mode, receiving synchronization signals at a first rate. A frame of data is stored on pixels of the display subsystem between each synchronization signal. The method may also include, in a low power display mode, receiving synchronization signals at a second rate. The second rate is less than the first rate. The method may include detecting a touch of the display via the touch subsystem between each synchronization signal.
Abstract translation: 提供了采用用于减少触敏显示器的功率使用的电路的方法和装置。 在一个示例中，用于减少触敏显示器的功率使用的方法可以包括接收用于电子设备的显示的功率。 该方法还可以包括为触摸子系统和显示器的显示子系统供电。 该方法可以包括在标准显示模式下以第一速率接收同步信号。 在每个同步信号之间，将数据帧存储在显示子系统的像素上。 该方法还可以包括在低功率显示模式下以第二速率接收同步信号。 第二个比率低于第一个利率。 该方法可以包括在每个同步信号之间经由触摸子系统检测显示器的触摸。
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公开(公告)号：US20250095605A1
公开(公告)日：2025-03-20
申请号：US18625158
申请日：2024-04-02
Applicant: Apple Inc.
Inventor： Baris Posat , John T. Wetherell , Hasan Akyol , Mahdi Farrokh Baroughi , Hopil Bae
IPC: G09G5/00
Abstract: Electronic displays may display a frame of image content by controlling emissions of display pixels. To this end, the electronic display may include one or more column drivers that drive the display pixels to emit light. The column drivers may be collectively compensated by common components, such as a single sampling capacitor and/or an analog buffer, which may reduce a size of the column drivers. In another example, the column drivers may include cascode transistors with increased width-to-length ratio and share a common n-well. Each transistor may be compensated by a respective capacitor, however a size of each sampling capacitor may be reduced, thereby reducing a size of the column driver. Moreover, a size of a level shifter may be reduced by operating transistors of the level shifter with sub-threshold voltage. Furthermore, a resolution of the electronic display may be improved by extending a pulse of an emission clock signal.
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公开(公告)号：US20250022407A1
公开(公告)日：2025-01-16
申请号：US18742756
申请日：2024-06-13
Applicant: Apple Inc.
Inventor： Majid Gharghi , Tore Nauta , Saif Choudhary , Chuang Qian , Hopil Bae , Mahdi Farrokh Baroughi , Xia Li , Patrick B Bennett , Ze Yuan
IPC: G09G3/32
Abstract: A pulse width modulation and amplitude modulation driving system for a display panel, including related circuits and methods of operation, are described. In an embodiment, a display panel includes a thin film transistor layer comprising a plurality of subpixel circuits. Each subpixel circuit may include a drive transistor, a comparator, and a switch. A plurality of light emitting diodes (LEDs), such as micro-LEDs, may be connected to the plurality of subpixel circuits. Each subpixel circuit can control an LED based on a current amplitude controlled by the drive transistor and a current pulse width controlled by the comparator and the switch. Other aspects are also described and claimed.
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公开(公告)号：US20240304163A1
公开(公告)日：2024-09-12
申请号：US18119772
申请日：2023-03-09
Applicant: Apple Inc.
Inventor： Yung-Chin Chen , Hopil Bae , Mahdi Farrokh Baroughi , Sheng Zhang , Yanghyo Kim , Young Don Bae
CPC classification number: G09G5/12 , G09G5/18 , G09G2320/041 , G09G2320/0673 , G09G2340/0435
Abstract: An electronic device uses a leader synchronize signal generator to synchronize clock signal generators used by multiple components in the electronic device to a common time-base. A processor core complex of the electronic device sends per-frame configuration to a timing controller for frames to be displayed on an electronic display before a corresponding frame begins.
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公开(公告)号：US20240012515A1
公开(公告)日：2024-01-11
申请号：US18212099
申请日：2023-06-20
Applicant: Apple Inc.
Inventor： Pablo Moreno Galbis , Xiang Lu , Bin Huang , Ling Zhang , Nikhil Acharya , Derek K. Shaeffer , Stanley B. Wang , Yongjie Jiang , Hopil Bae , Jiayi Jin , Ce Zhang , Young Don Bae , Giovanni Azzellino , Wooseung Yang , Mahdi Farrokh Baroughi , Weijun Yao , Rajesh Velayuthan , Eric A. Hildebrandt , Henry C. Jen
IPC: G06F3/041
CPC classification number: G06F3/0418 , G06F2203/04107 , G06F3/044
Abstract: Touch sensitive display technologies (e.g., integrated touch-display pixel-based systems) are evolving to contain more analog and digital circuits inside the panel itself instead of the traditionally simple thin-film transistors. This improves the display characteristics but makes those circuits more vulnerable to the impact of external ESD strikes, which can degrade the user experience. This disclosure describes a series of circuits and techniques to mitigate the impact of these discharges on front of screen artifacts and potential false touches. These circuits and techniques may include: performing configuration-only panel updates independently of the image refresh rate, improving the in-panel memory circuits to make them resistant to unexpected pin toggles via disabling of a write path in response to a read clock, implementing a pin corruption detector and implementing a supply injection detector.
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