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    Location-based swing compensation for touch channel attenuation
    2.
    发明授权
    Location-based swing compensation for touch channel attenuation 有权

    公开(公告)号：US11137858B2

    公开(公告)日：2021-10-05

    申请号：US15698471

    申请日：2017-09-07

    Applicant: Apple Inc.

    Inventor： Albert Lin ,  Shwetabh Verma ,  Sumant Ranganathan

    IPC: G06F3/041 ,  G06F3/044

    Abstract: Location-based swing compensation for touch sensor panels can improve touch sensing performance. Due to differences in impedance characteristics of touch nodes at different locations in a touch sensor panel (due to differences in routing to touch nodes and due to differences in impedance with respect to ground (loading effects) of touch nodes), touch nodes can have non-uniform bandwidth characteristics which can manifest as non-uniform signal and signal-to-noise ratio (SNR) across the touch sensor panel. Additionally, the non-uniform signal can reduce the effectiveness of bootstrapping. Swing compensated stimulation signals can be applied to various touch nodes based on location and/or impedance characteristics of the various touch nodes. For example, the stimulation voltage can be increased for touch nodes with longer and/or thinner routing traces so that the signal at the touch node can be uniform with other touch nodes whose routing may be shorter and/or thicker. In some examples, a touch sensing system can include a swing compensation memory including swing compensation parameters to select stimulation signal swing for transmit channels.

    ESD detection on a touch input device
    3.
    发明授权
    ESD detection on a touch input device 有权
    触摸输入设备的ESD检测

    公开(公告)号：US09075481B2

    公开(公告)日：2015-07-07

    申请号：US13710318

    申请日：2012-12-10

    Applicant: Apple Inc.

    Inventor： David H. C. Shih ,  Albert Lin ,  Sean Erik O'Connor ,  Ari Y. Benbasat ,  Wayne Carl Westerman

    IPC: G06F3/041 ,  G06F3/042 ,  G06F3/043 ,  G06F3/044 ,  G06F3/045 ,  G06F3/046 ,  G06F3/047

    CPC classification number: G06F3/041 ,  G06F3/0425 ,  G06F3/044

    Abstract: A touch sensitive device that detects the occurrence of an electrostatic discharge event on the device by analyzing an acquired touch image for characteristics associated with the occurrence of an ESD event is provided. An acquired touch image is analyzed for characteristics that differentiate it from a touch image generated by a user input and are correlated with an expected touch image generated by an ESD event.

    Abstract translation: 提供了一种触敏设备，其通过分析所获取的触摸图像来检测与ESD事件的发生相关的特性来检测设备上的静电放电事件的发生。 分析获取的触摸图像，以将其与由用户输入产生的触摸图像区分开，并与由ESD事件产生的预期触摸图像相关联的特性。

    Multi-bar capacitive sense electrode
    4.
    发明授权
    Multi-bar capacitive sense electrode 有权

    公开(公告)号：US10310667B2

    公开(公告)日：2019-06-04

    申请号：US14860364

    申请日：2015-09-21

    Applicant: Apple Inc.

    Inventor： Alexandre Gourevitch ,  Albert Lin ,  Isaac Chan ,  Martin Paul Grunthaner ,  Prathit Bugnait ,  Seyed Mohammad Navidpour ,  Sumant Ranganathan

    IPC: G06F3/044 ,  G06F3/041 ,  G06F3/0354

    Abstract: Electrode configurations for reducing wobble error for a stylus translating on a surface of a touch sensor panel is disclosed. Electrodes associated with a more linear signal profile can correlate to lower wobble error. In some examples, electrodes can be configured such that the signal profile associated with each electrode is spread to be wider, and thus, more linear. In some configurations, electrodes can include two or more bars extending along the length of the electrode with each bar electrically connected to one another at one or both ends. Bars can be of non-uniform width or spacing. Some configurations can include a “split bar,” which can divide a bar lengthwise in order to improve optical uniformity. In some examples, electrodes can include projections which can interleave with corresponding projections in adjacent electrodes.

    SHORTING STRUCTURE IN PLASTIC ROLL-TO-ROLL PROCESS
    6.
    发明申请
    SHORTING STRUCTURE IN PLASTIC ROLL-TO-ROLL PROCESS 有权
    塑料滚动到滚动过程中的短路结构

    公开(公告)号：US20140070824A1

    公开(公告)日：2014-03-13

    申请号：US13710233

    申请日：2012-12-10

    Applicant: APPLE INC.

    Inventor： Siddharth MOHAPATRA ,  Sunggu Kang ,  John Z. Zhong ,  Albert Lin

    IPC: G01R35/00

    CPC classification number: G01R35/00 ,  G06F3/044 ,  G06F2203/04103 ,  H05K3/0097 ,  H05K3/02 ,  Y10T29/49117 ,  Y10T29/49124 ,  Y10T29/49204 ,  Y10T29/49815

    Abstract: Roll-to-roll processes for manufacturing touch sensors on a plastic base film are provided. The touch sensors can be deposited on the base film using various patterning techniques. One or more shorting bars can also be patterned onto the base film to couple together traces, such as drive lines, sense lines, conductive traces, and the like, of the touch sensor to prevent a potential difference from forming between traces due to static buildup during the manufacturing process. After the touch sensor is fully formed on the base film, the touch sensor can be removed from the base film using lithography or a physical cutting process. The removal process can separate the touch sensor from the one or more shorting bars, thereby uncoupling the traces of the touch sensor.

    Abstract translation: 提供了在塑料基膜上制造触摸传感器的卷对卷工艺。 可以使用各种图案化技术将触摸传感器沉积在基膜上。 也可以将一个或多个短路棒图案化到基膜上以将触摸传感器的迹线（例如驱动线，感测线，导电迹线等）耦合在一起，以防止由于静电积累而在迹线之间形成潜在差异 在制造过程中。 在基底膜上完全形成触摸传感器之后，可以使用光刻或物理切割工艺从触摸传感器移除触摸传感器。 移除过程可以将触摸传感器与一个或多个短路棒分开，从而使触摸传感器的迹线分离。

    High aspect ratio capacitive sensor panel
    8.
    发明授权
    High aspect ratio capacitive sensor panel 有权

    公开(公告)号：US10534481B2

    公开(公告)日：2020-01-14

    申请号：US15228942

    申请日：2016-08-04

    Applicant: Apple Inc.

    Inventor： Massoud Badaye ,  Sudip Mondal ,  Sagar Rajiv Vaze ,  Albert Lin ,  Qian Zhao ,  Chun-Hao Tung ,  Sunggu Kang ,  John Z. Zhong

    IPC: G06F3/044 ,  G06F3/041

    Abstract: High aspect ratio touch sensor panels are disclosed in which multiple row electrode blocks can be formed in a single row within an active area of the touch sensor panel, each row electrode block including a plurality of vertically adjacent row electrodes, or in some instances only one row electrode. In addition, each column electrode can be separated into multiple column electrode segments, each column electrode segment being vertically oriented and formed in a different column. The column electrode segments associated with any one column electrode can be spread out so that each of these column electrodes segments can be co-located and associated with a different row electrode block.

    Back of cover touch sensors
    9.
    发明授权
    Back of cover touch sensors 有权

    公开(公告)号：US10444918B2

    公开(公告)日：2019-10-15

    申请号：US15691283

    申请日：2017-08-30

    Applicant: Apple Inc.

    Inventor： Wencong Zhu ,  Albert Lin ,  Alexander A. Penn ,  Ashray Vinayak Gogte ,  Chun-Hao Tung ,  Hao Zhang ,  Hui Zhou ,  John Z. Zhong ,  Steven P. Hotelling ,  Sudip Mondal ,  Sumant Ranganathan ,  Sunggu Kang ,  Ramachandran Chundru ,  Viswa B. Pilla

    IPC: G06F3/044

    Abstract: Touch sensor configurations for reducing electrostatic discharge events in the border area of a touch sensor panel is disclosed. Touch sensors (e.g., electrodes formed on the cover material and/or the opaque mask) can be susceptible to certain events such as arcing and discharge/joule heating, which may negatively affect touch sensor performance. Examples of the disclosure can include increasing the trace width, spacing, and/or thickness in the border area relative to the trace width, spacing, and/or thickness in the visible/active area along one or more sides of the touch sensor panel. In some examples, touch electrodes can be located exclusively in the visible/active areas along one or more sides of the touch sensor panel, while dummy sections can be included in both the border and visible/active areas. Additionally or alternatively, one or more gaps between adjacent touch electrodes in the border area or serpentine routing can be included.

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