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公开(公告)号：US20160162119A1
公开(公告)日：2016-06-09
申请号：US15040928
申请日：2016-02-10
Applicant: Apple Inc.
Inventor： Christoph H. KRAH
IPC: G06F3/041
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：US20150268791A1
公开(公告)日：2015-09-24
申请号：US14730162
申请日：2015-06-03
Applicant: Apple Inc.
Inventor： Minh-Dieu Thi VU , Thomas James WILSON , Christoph H. KRAH
CPC classification number: G06F3/0416 , G06F1/3262 , G06F3/03545 , G06F3/041 , G06F3/044 , G06F2203/04104
Abstract: A device that can autonomously scan a sensor panel is disclosed. Autonomous scanning can be performed by implementing channel scan logic. In one embodiment, channel scan logic carries out many of the functions that a processor would normally undertake, including generating timing sequences and obtaining result data; comparing scan result data against a threshold value (e.g., in an auto-scan mode); generating row count; selecting one or more scanning frequency bands; power management control; and performing an auto-scan routine in a low power mode.
Abstract translation: 公开了一种可自主扫描传感器面板的装置。 可以通过实现信道扫描逻辑来执行自主扫描。 在一个实施例中，信道扫描逻辑执行处理器通常将承担的许多功能，包括产生定时序列和获得结果数据; 将扫描结果数据与阈值进行比较（例如，以自动扫描模式）; 生成行数; 选择一个或多个扫描频带; 电源管理控制; 并以低功率模式执行自动扫描程序。
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公开(公告)号：US20140362048A1
公开(公告)日：2014-12-11
申请号：US14464524
申请日：2014-08-20
Applicant: APPLE INC.
Inventor： Steven P. HOTELLING , Christoph H. KRAH , Brian Q. HUPPI
IPC: G06F3/044
CPC classification number: G06F3/0418 , G06F3/044 , G06F2203/04104
Abstract: A multipoint touch surface controller is disclosed herein. The controller includes an integrated circuit including output circuitry for driving a capacitive multi-touch sensor and input circuitry for reading the sensor. Also disclosed herein are various noise rejection and dynamic range enhancement techniques that permit the controller to be used with various sensors in various conditions without reconfiguring hardware.
Abstract translation: 本文公开了一种多点触摸表面控制器。 控制器包括集成电路，其包括用于驱动电容式多点触摸传感器的输出电路和用于读取传感器的输入电路。 本文还公开了各种噪声抑制和动态范围增强技术，其允许控制器在各种条件下与各种传感器一起使用，而无需重新配置硬件。
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公开(公告)号：US20240118773A1
公开(公告)日：2024-04-11
申请号：US18462330
申请日：2023-09-06
Applicant: Apple Inc.
Inventor： Christoph H. KRAH , Mohammad YEKE YAZDANDOOST , Christopher J. BUTLER
CPC classification number: G06F3/0425 , G06F3/0412
Abstract: An optical stylus system including an optical stylus and optical sensing system that are together operative to determine one or more of the target or touch location, centroid, hover distance, tilt angle, azimuth, and in some instances the orientation and rotation of the stylus is disclosed. In some examples, light illuminator and detector angular filters are employed to limit the illumination and detection angles of light to minimize false object detection. In other examples, the stylus is a passive stylus with a surface that reflects light with a consistent angular reflection profile or reflected light pattern regardless of stylus tilt. In still other examples, the stylus can detect light at different modulation frequencies emitted from an array of light emitters in the optical sensing system, or the stylus can emit light and detect reflected light with different spectral distributions across the optical sensing system to determine stylus location.
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公开(公告)号：US20240103669A1
公开(公告)日：2024-03-28
申请号：US18455295
申请日：2023-08-24
Applicant: Apple Inc.
Inventor： William PAUL , Christoph H. KRAH
CPC classification number: G06F3/04186 , G01N27/223 , G01N27/228 , G06F3/041662 , G06F3/044 , G06F2203/04107
Abstract: A pixelated mutual capacitance sensing configuration to detect the presence of floating water is disclosed. An integrated touch screen can be configured in a checkerboard arrangement of alternating drive pixels and sense pixels, where each drive or sense pixel can include a plurality of sub-pixels. The sense pixels can include sense sub-pixels surrounded by ground sub-pixels to reduce the baseline mutual capacitance between the drive and sense pixels. Stimulated drive pixels can capacitively couple onto the sense sub-pixels of the sense pixel, forming a baseline (no touch) mutual capacitance between the drive pixels and the sense sub-pixels. The presence of grounded objects shunts some charge to ground and reduces the mutual capacitance, while floating water provides and additional parallel mutual capacitance path that increases the mutual capacitance. Floating water can be distinguished from a grounded touch based on the direction of the change in mutual capacitance.
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Patent Agency Ranking
公开(公告)号：US20230229275A1
公开(公告)日：2023-07-20
申请号：US18185968
申请日：2023-03-17
Applicant: Apple Inc.
Inventor： William Matthew Pender PAUL , Christoph H. KRAH , Bin HUANG , Stanley Bo-Ting WANG
CPC classification number: G06F3/04166 , G06F3/0412 , G06F3/0446
Abstract: In some examples, a touch screen can include touch electrodes that can function as drive (Tx) electrodes and sense (Rx) electrodes during a touch sensing operation of the electronic device. The drive electrodes can include +Tx electrodes and -Tx electrodes that can receive drive signals that can have the same amplitude and frequency and opposite phases, for example. In some examples, the surface areas of the +Tx electrodes and the -Tx electrodes can be the same and the distances of the +Tx electrodes and -Tx electrodes from the Rx electrodes can be different. In some examples, the total charge coupled to a proximate or touching object can be zero, which can mitigate problems associated with ungrounded or poorly grounded objects in contact with the touch screen.
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公开(公告)号：US20210357063A1
公开(公告)日：2021-11-18
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 , Hopil BAE , John T. WETHERELL , Thierry S. DIVEL , Xiang LU
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：US20200348793A1
公开(公告)日：2020-11-05
申请号：US16882625
申请日：2020-05-25
Applicant: Apple Inc.
Inventor： Minh-Dieu Thi VU , Thomas James WILSON , Christoph H. KRAH
IPC: G06F3/041 , G06F3/0354 , G06F3/044 , G06F1/3234
Abstract: A device that can autonomously scan a sensor panel is disclosed. Autonomous scanning can be performed by implementing channel scan logic. In one embodiment, channel scan logic carries out many of the functions that a processor would normally undertake, including generating timing sequences and obtaining result data; comparing scan result data against a threshold value (e.g., in an auto-scan mode); generating row count; selecting one or more scanning frequency bands; power management control; and performing an auto-scan routine in a low power mode.
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公开(公告)号：US20200033979A1
公开(公告)日：2020-01-30
申请号：US16517513
申请日：2019-07-19
Applicant: Apple Inc.
Inventor： Christian M. SAUER , Christoph H. KRAH , Derek K. SHAEFFER , Hasan AKYOL , Henry C. JEN , Hopil BAE , John T. WETHERELL , Thierry S. DIVEL , Xiang LU
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：US20190286220A1
公开(公告)日：2019-09-19
申请号：US16275961
申请日：2019-02-14
Applicant: Apple Inc.
Inventor： Christoph H. KRAH , Thomas James WILSON
IPC: G06F1/3287 , G06F3/041 , G06F1/3296 , G06F1/3215 , G06F1/3234
Abstract: Power management for a touch controller is disclosed. The touch controller can include a transmit section for transmitting stimulation signals to an associated touch sensor panel to drive the panel, where the touch controller can selectively adjust the transmit section to reduce power during the transmission. The touch controller can also include a receive section for receiving touch signals resulting from the driving of the panel, where the touch controller can selectively adjust the receive section to reduce power during the receipt of the touch signals. The touch controller can also include a demodulation section for demodulating the received touch signals to obtain touch event results, where the touch controller can selectively adjust the demodulation section to reduce power during the demodulation of the touch signals. The touch controller can also selectively reduce power below present low levels during idle periods.
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