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公开(公告)号：US11775095B2
公开(公告)日：2023-10-03
申请号：US17384415
申请日：2021-07-23
Applicant: Apple Inc.
Inventor： Christian M. Sauer , Christoph H. Krah , Derek K. Shaeffer , Hasan Akyol , Henry C. Jen , John T. Wetherell , Thierry S. Divel
CPC classification number: G06F3/0412 , G06F3/044 , G06F3/0418 , G09G3/32 , H01L27/156
Abstract: An integrated touchscreen can include light emitting diodes or organic light emitting diodes (LEDs/OLEDs), display chiplets and touch chiplets disposed in a visible area of the integrated touch screen. For example, the LEDs/OLEDs, display chiplets and touch chiplets can be placed on a substrate by a micro-transfer tool. The integrated touchscreen can also include electrodes disposed in the visible area of the integrated touch screen. The electrodes can be capable of providing display functionality via the one or more display chiplets during display operation (e.g., operating as cathode terminals of the LEDs during the display operation) and capable of providing touch functionality via the touch chiplets during touch operation (e.g., touch node electrodes can be formed from groups of the electrodes and sensed). In some examples, the touch node electrodes can be formed and coupled to touch chiplets via the display chiplets.
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公开(公告)号：US11637153B2
公开(公告)日：2023-04-25
申请号：US16940192
申请日：2020-07-27
Applicant: Apple Inc.
Inventor： Christoph H. Krah , Mohammad Yeke Yazdandoost
Abstract: A display may have an array of light-emitting pixels that display an image in an active area of the display. These light-emitting pixels may be visible light pixels such as red, green, and blue thin-film organic light-emitting diode pixels. The display may also have a border region that runs along a peripheral edge of the active area. The border region may be free of pixels that display image light, whereas the active area may be free of light detectors. A non-optical touch sensor such as a capacitive touch sensor may overlap the active area to gather touch input from the active area. The non-optical touch sensor may not overlap any portion of the border region. In the border region, an optical sensor formed from infrared light-emitting pixels and infrared light-sensing pixels or other optical sensing circuitry may serve as an optical touch sensor.
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公开(公告)号：US11353985B2
公开(公告)日：2022-06-07
申请号：US17003133
申请日：2020-08-26
Applicant: Apple Inc.
Inventor： Christoph H. Krah
IPC: G06F3/041 , G06F3/044 , G06F3/0354 , G06F3/047
Abstract: A switching circuit is disclosed. The switching circuit can comprise a plurality of pixel mux blocks, each of the pixel mux blocks configured to be coupled to a respective touch node electrode on a touch sensor panel, and each of the pixel mux blocks including logic circuitry. The switching circuit can also comprise a plurality of signal lines configured to be coupled to sense circuitry, at least one of the signal lines configured to transmit a touch signal from one of the respective touch node electrodes to the sense circuitry. The logic circuitry in each pixel mux block of the plurality of pixel mux blocks can be configured to control the respective pixel mux block so as to selectively couple the respective pixel mux block to any one of the plurality of signal lines.
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54.发明授权公开(公告)号：US11016616B2
公开(公告)日：2021-05-25
申请号：US16530938
申请日：2019-08-02
Applicant: Apple Inc.
Inventor： Christian M. Sauer , Christoph H. Krah , Steven P. Hotelling , Martin Paul Grunthaner
Abstract: An electronic device can include an integrated touch and display chip that can operate in multiple power domains. For example, the integrated touch and display chip can operate in a guarded power domain during the touch operation and can operate in a system power domain during non-guarded display operations. In some examples, two power domains can include a guarded power domain and a system power domain, whose grounds can be differentiated by a guard buffer signal. In some examples, the guard buffer can be disposed between the integrated touch and display chip and a battery of the device. In some examples, the guard buffer can be disposed between the battery of the device and the chassis of the device.
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公开(公告)号：US10795488B2
公开(公告)日：2020-10-06
申请号：US15009774
申请日：2016-01-28
Applicant: Apple Inc.
Inventor： Christoph H. Krah
IPC: G06F3/041 , G06F3/0354 , G06F3/047 , G06F3/044
Abstract: A switching circuit is disclosed. The switching circuit can comprise a plurality of pixel mux blocks, each of the pixel mux blocks configured to be coupled to a respective touch node electrode on a touch sensor panel, and each of the pixel mux blocks including logic circuitry. The switching circuit can also comprise a plurality of signal lines configured to be coupled to sense circuitry, at least one of the signal lines configured to transmit a touch signal from one of the respective touch node electrodes to the sense circuitry. The logic circuitry in each pixel mux block of the plurality of pixel mux blocks can be configured to control the respective pixel mux block so as to selectively couple the respective pixel mux block to any one of the plurality of signal lines.
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Patent Agency Ranking
公开(公告)号：US10459587B2
公开(公告)日：2019-10-29
申请号：US16179565
申请日：2018-11-02
Applicant: Apple Inc.
Inventor： Christoph H. Krah , Christian M. Sauer
IPC: G06F3/044 , G02F1/1333 , G02F1/1343 , G06F3/041
Abstract: A touch sensing system is disclosed. The touch sensing system includes a guard signal generation chip operating in a first power domain referenced to a first voltage, the guard signal generation chip configured to generate a guard signal. A touch sensing chip operates in a second power domain, different from the first power domain, referenced to the guard signal, the touch sensing chip configured to sense touch at one or more touch electrodes included in a touch sensor panel operating in the second power domain referenced to the guard signal, and the touch sensing chip a different chip than the guard signal generation chip. A voltage regulator is configured to selectively regulate a voltage of the guard signal at the touch sensing chip.
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公开(公告)号：US10120520B2
公开(公告)日：2018-11-06
申请号：US15663271
申请日：2017-07-28
Applicant: Apple Inc.
Inventor： Christoph H. Krah , Christian M. Sauer
IPC: G06F3/00 , G06F3/044 , G06F3/041 , G02F1/1343 , G02F1/1333
Abstract: A touch sensing system is disclosed. The touch sensing system includes a guard signal generation chip operating in a first power domain referenced to a first voltage, the guard signal generation chip configured to generate a guard signal. A touch sensing chip operates in a second power domain, different from the first power domain, referenced to the guard signal, the touch sensing chip configured to sense touch at one or more touch electrodes included in a touch sensor panel operating in the second power domain referenced to the guard signal, and the touch sensing chip a different chip than the guard signal generation chip. A voltage regulator is configured to selectively regulate a voltage of the guard signal at the touch sensing chip.
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公开(公告)号：US09582114B2
公开(公告)日：2017-02-28
申请号：US15040928
申请日：2016-02-10
Applicant: Apple Inc.
Inventor： Christoph H. Krah
CPC classification number: G06F3/0418 , G06F3/0412 , G06F2203/04101
Abstract: A touch sensitive display capable of compensating for crosstalk in the display is disclosed. Crosstalk in display components can be reduced, eliminated, or otherwise compensated for by reducing or eliminating parasitic capacitances that cause the crosstalk. To do so, gate voltages to the display components, such as thin film transistors (TFTs), that introduce the parasitic capacitances can be reduced or otherwise adjusted. In one approach, the gate voltage can be set at multiple different low levels to generate respective sets of touch signals having different amounts of crosstalk. The different crosstalk amounts can then be used to determine and compensate for the crosstalk in the touch signals. In another approach, gate voltage can be modulated between multiple different low levels to push crosstalk out of band with the generated touch signals. The out-of-band crosstalk can then be used to compensate for the crosstalk in the touch signals.
Abstract translation: 公开了一种能够补偿显示器串扰的触敏显示器。 通过减少或消除引起串扰的寄生电容，可以减少，消除或以其他方式补偿显示器组件中的串扰。 为此，可以减小或调整引入寄生电容的诸如薄膜晶体管（TFT）的显示器组件的栅极电压。 在一种方法中，栅极电压可以设置在多个不同的低电平以产生具有不同量的串扰的各组触摸信号。 然后可以使用不同的串扰量来确定和补偿触摸信号中的串扰。 在另一种方法中，栅极电压可以在多个不同的低电平之间进行调制，以使产生的触摸信号带来带外的串扰。 然后可以使用带外串扰来补偿触摸信号中的串扰。
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公开(公告)号：US20160224172A1
公开(公告)日：2016-08-04
申请号：US14847404
申请日：2015-09-08
Applicant: Apple Inc.
Inventor： Christoph H. Krah , Yafei Bi , Kevin J. White
CPC classification number: G06F3/0416 , G06F3/041 , G06F3/0412 , G06F3/044
Abstract: The disclosed embodiments relate to a system that provides power for a touch-enabled display, wherein the touch-enabled display cycles between a display mode and a touch mode. During the display mode, the system drives a display-mode voltage to the touch-enabled display through a power output, wherein the power output is coupled through a display-mode capacitor CD to ground. Next, during a transition from the display mode to the touch mode, the system couples the power output through a touch-mode capacitor CT to ground, wherein CT was previously charged to a touch-mode voltage, which causes the power output to rapidly transition to the touch-mode voltage. Then, during the touch mode, the system drives the touch-mode voltage through the power output.
Abstract translation: 所公开的实施例涉及为触摸显示提供电力的系统，其中触摸启用显示在显示模式和触摸模式之间循环。 在显示模式期间，系统通过功率输出将显示模式电压驱动到具有触摸功能的显示器，其中功率输出通过显示模式电容器CD耦合到地。 接下来，在从显示模式到触摸模式的转变期间，系统通过触摸模式电容器CT将功率输出耦合到地，其中CT预先被充电到触摸模式电压，这导致功率输出快速转变 到触摸模式电压。 然后，在触摸模式下，系统通过电源输出驱动触摸模式电压。
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公开(公告)号：US09367158B2
公开(公告)日：2016-06-14
申请号：US14570915
申请日：2014-12-15
Applicant: Apple Inc.
Inventor： Steven P. Hotelling , Christoph H. Krah
CPC classification number: G06F3/044 , G06F1/3231 , G06F1/3262 , G06F3/017 , G06F3/0227 , G06F3/041 , G06F3/0416 , G06F3/042 , G06F3/0421 , G06F3/0488 , G06F2203/04101 , G06F2203/04104 , G06F2203/04106 , G06F2203/04808 , Y02B70/30 , Y02B70/32 , Y02D10/173
Abstract: The use of one or more proximity sensors in combination with one or more touch sensors in a multi-touch panel to detect the presence of a finger, body part or other object and control or trigger one or more functions in accordance with an “image” of touch provided by the sensor outputs is disclosed. In some embodiments, one or more infrared (IR) proximity sensors can be driven with a specific stimulation frequency and emit IR light from one or more areas, which can in some embodiments correspond to one or more multi-touch sensor “pixel” locations. The reflected IR signal, if any, can be demodulated using synchronous demodulation. In some embodiments, both physical interfaces (touch and proximity sensors) can be connected to analog channels in the same electrical core.
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