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    • 3. 发明授权
    • Ground guard for capacitive sensing
    • 电容式感应接地保护
    • US08487898B2
    • 2013-07-16
    • US12110024
    • 2008-04-25
    • Steve Porter Hotelling
    • Steve Porter Hotelling
    • G06F3/045
    • G06F3/044G06F2203/04107
    • A touch sensor panel is disclosed including the use of ground guards or ground isolation bars to improve the touch event detection capabilities of the touch sensor panel. Ground isolation bars can be formed between connecting traces and adjacent sense lines to shunt near-field lines to ground and reduce unwanted capacitive coupling between the connecting traces and the sense lines. Ground guards can be formed between the drive and sense lines to partially or fully surround a sense line and shunt near-field lines to ground and improve the touch event detection capabilities of the sensor.
    • 公开了一种触摸传感器面板,其包括使用接地保护器或接地隔离条来改善触摸传感器面板的触摸事件检测能力。 可以在连接迹线和相邻感测线之间形成接地隔离条,以将近场线分流到地,并减少连接迹线和感测线之间的不必要的电容耦合。 可以在驱动和感测线之间形成接地保护,以部分地或完全地围绕感测线并且将近场线分流到地,并且改善传感器的触摸事件检测能力。
    • 6. 发明申请
    • FULL SCALE CALIBRATION MEASUREMENT FOR MULTI-TOUCH SURFACES
    • 用于多触摸表面的全尺寸校准测量
    • US20120154339A1
    • 2012-06-21
    • US13405218
    • 2012-02-24
    • Brian Richards LandSteve Porter HotellingRichard Wei Kwang Lim
    • Brian Richards LandSteve Porter HotellingRichard Wei Kwang Lim
    • G06F3/041
    • G06F3/0418
    • Normalization of regions of a sensor panel capable of detecting multi-touch events, or a sensor panel capable of detecting multi-hover events, is disclosed to enable each sensor in the sensor panel to trigger a virtual button in a similar manner, given the same amount of touch or hover. Each sensor produces an output value proportional to the level or amount of touch or hover. However, due to processing, manufacturing and physical design differences, the sensor output values can vary from region to region or panel to panel for a given amount of touch or hover. To normalize the sensor output values across regions, gain and offset information can be obtained in advance, stored in nonvolatile memory, and later used to normalize the sensor output values so that all regions in the sensor panel can trigger virtual buttons similarly, providing a uniform “response function” at any location on the sensor panel.
    • 公开了能够检测多触摸事件的传感器面板的区域的归一化,或者能够检测多悬停事件的传感器面板,以使得传感器面板中的每个传感器能够以类似的方式触发虚拟按钮,给定相同的方式 触摸量或悬停量。 每个传感器产生与触摸或悬停的水平或数量成比例的输出值。 然而,由于处理,制造和物理设计差异,传感器输出值可以在给定量的触摸或悬停之间因地区或面板到面板而变化。 为了在区域之间规范化传感器输出值,可以提前获得增益和偏移信息,存储在非易失性存储器中,然后用于归一化传感器输出值,以便传感器面板中的所有区域可以类似地触发虚拟按钮,从而提供均匀 传感器面板上任何位置的“响应功能”。
    • 8. 发明授权
    • Shaping a cover glass
    • 塑造玻璃盖
    • US08153016B2
    • 2012-04-10
    • US12030052
    • 2008-02-12
    • Steve Porter HotellingJohn Z. ZhongJoseph Edward Clayton
    • Steve Porter HotellingJohn Z. ZhongJoseph Edward Clayton
    • C23F3/00
    • G06F3/044
    • The fabrication of a touch sensor panel having co-planar single-layer touch sensors fabricated on the back side of a cover glass is disclosed. It can be desirable from a manufacturing perspective to perform all thin-film processing steps on a motherglass before separating it into separate parts. To perform thin-film processing on a motherglass before separation, a removable sacrificial layer such as a photoresist can be applied over the thin-film layers. Next, the motherglass can be scribed and separated, and grinding and polishing steps can be performed prior to removing the sacrificial layer. In alternative embodiments, after the protective sacrificial layer is applied, the bulk of the coverglass can be dry-etched using a very aggressive anisotropic etching that etches primarily in the z-direction. In this embodiment, the etching can be patterned using photolithography to create rounded corners or any other shape. The photoresist can then be removed.
    • 公开了在盖玻璃背面制造的具有共面单层触摸传感器的触摸传感器面板的制造。 从制造的角度来看,在将其分离成单独部件之前,在母玻璃上执行所有薄膜加工步骤是可取的。 为了在分离之前在母玻璃上进行薄膜处理,可以在薄膜层上施加诸如光致抗蚀剂的可移除的牺牲层。 接下来,可以刻划和分离母玻璃,并且可以在去除牺牲层之前执行研磨和抛光步骤。 在替代实施例中,在施加保护性牺牲层之后,可以使用主要在z方向蚀刻的非常侵蚀性的各向异性蚀刻来干蚀刻覆盖层的主体。 在该实施例中,可以使用光刻法蚀刻蚀刻以产生圆角或任何其它形状。 然后可以除去光致抗蚀剂。
    • 10. 发明授权
    • Detection of low noise frequencies for multiple frequency sensor panel stimulation
    • 检测多频率传感器面板刺激的低噪声频率
    • US08120591B2
    • 2012-02-21
    • US12904012
    • 2010-10-13
    • Christoph Horst KrahSteve Porter HotellingSean Erik O'ConnorWayne Carl Westerman
    • Christoph Horst KrahSteve Porter HotellingSean Erik O'ConnorWayne Carl Westerman
    • G06F3/041
    • G06F3/0412G02F1/13338G06F3/0418G06F3/044
    • The identification of low noise stimulation frequencies for detecting and localizing touch events on a touch sensor panel is disclosed. Each of a plurality of sense channels can be coupled to a separate sense line in a touch sensor panel and can have multiple mixers, each mixer using a demodulation frequency of a particular frequency, phase and delay. With no stimulation signal applied to any drive lines in the touch sensor panel, pairs of mixers can demodulate the sum of the output of all sense channels using the in-phase (I) and quadrature (Q) signals of a particular frequency. The demodulated outputs of each mixer pair can be used to calculate the magnitude of the noise at that particular frequency, wherein the lower the magnitude, the lower the noise at that frequency. Several low noise frequencies can be selected for use in a subsequent touch sensor panel scan function.
    • 公开了用于检测和定位触摸传感器面板上的触摸事件的低噪声刺激频率的识别。 多个感测通道中的每一个可以耦合到触摸传感器面板中的单独的感测线,并且可以具有多个混频器,每个混频器使用特定频率,相位和延迟的解调频率。 在没有刺激信号施加到触摸传感器面板中的任何驱动线路的情况下,成对的混频器可以使用特定频率的同相(I)和正交(Q)信号来解调所有感测通道的输出之和。 每个混频器对的解调输出可用于计算该特定频率处的噪声幅度,其中幅度越小,该频率处的噪声越低。 可以选择几种低噪声频率用于随后的触摸传感器面板扫描功能。