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    Device and method for determining touch position on sensing area of capacitive touch panel
    12.
    发明授权
    Device and method for determining touch position on sensing area of capacitive touch panel 有权
    用于确定电容式触摸屏感应区域的触摸位置的装置和方法

    公开(公告)号：US07808490B2

    公开(公告)日：2010-10-05

    申请号：US11846707

    申请日：2007-08-29

    Applicant: Chin-Fu Chang ,  Cheng-Han Lee

    Inventor： Chin-Fu Chang ,  Cheng-Han Lee

    IPC: G06F3/041

    CPC classification number: G06F3/0418 ,  G06F3/044

    Abstract: Described is a device and a method for determining a touch position on a sensing area of a capacitive touch panel. In the device and method, an alternating current (AC) scan signal having a frequency and a current value is supplied to each of four corners of the capacitive touch panel. Next, the frequencies of the AC scan signals are each rapidly switched among a group of specific frequencies. The current values of the AC scan signals detected. In response, a group of selected frequencies is selected according to a noise filtering procedure from the group of specific frequencies based on the current values. Final current values are obtained by calculating the current values of the AC scan signals of the group of selected frequencies. Finally, the touch position on the capacitive touch panel is determined based on the final current values.

    Abstract translation: 描述了一种用于确定电容式触摸面板的感测区域上的触摸位置的装置和方法。 在该装置和方法中，将具有频率和电流值的交流（AC）扫描信号提供给电容式触摸面板的四个角中的每一个。 接下来，AC扫描信号的频率在特定频率组中快速切换。 检测到AC扫描信号的当前值。 作为响应，基于当前值，根据来自特定频率的组的噪声滤波程序选择一组选择的频率。 通过计算所选频率组的AC扫描信号的电流值来获得最终电流值。 最后，基于最终的电流值确定电容式触摸面板上的触摸位置。

    Method and device for detecting capacitive touch screen
    13.
    发明授权
    Method and device for detecting capacitive touch screen 有权
    用于检测电容式触摸屏的方法和装置

    公开(公告)号：US09024911B2

    公开(公告)日：2015-05-05

    申请号：US13545291

    申请日：2012-07-10

    Applicant: Chin-Fu Chang

    Inventor： Chin-Fu Chang

    IPC: G06F3/045 ,  G06F3/041 ,  G06F3/044

    CPC classification number: G06F3/0418 ,  G06F3/044

    Abstract: A detecting device and method for a capacitive touch screen is proposed. A plurality of frequency settings is employed. Each frequency setting corresponds to a type of driving mode of a type of driving potential. These frequency settings are used for setting the detecting device for the capacitive touch screen. When the signal-to-noise (S/N) ratio of the signals in the capacitive touch screen is not appropriate, frequency settings are changed by selecting one that yields a more appropriate S/N ratio among the frequency settings. The driving mode includes a single-electrode driving mode in which only a single driving electrode in the capacitive touch screen is driven at a time, and a multiple-electrode driving mode in which multiple driving electrodes are simultaneously driven at a time, and there can be several types of driving potentials.

    Abstract translation: 提出了一种用于电容式触摸屏的检测装置和方法。 采用多个频率设置。 每个频率设置对应于一种驱动电位的驱动模式的类型。 这些频率设置用于设置电容式触摸屏的检测装置。 当电容式触摸屏中的信号的信噪比（S / N）不合适时，通过选择在频率设置中产生更适合的S / N比的频率设置来改变频率设置。 驱动模式包括其中一次仅驱动电容式触摸屏中的单个驱动电极的单电极驱动模式和多​​次驱动电极同时被驱动的多电极驱动模式，并且可以 是几种驾驶潜力。

    Positive/negative sampling and holding circuit
    14.
    发明授权
    Positive/negative sampling and holding circuit 有权
    正负采样保持电路

    公开(公告)号：US08957707B2

    公开(公告)日：2015-02-17

    申请号：US13609524

    申请日：2012-09-11

    Applicant: Chin-Fu Chang ,  Guang-Huei Lin

    Inventor： Chin-Fu Chang ,  Guang-Huei Lin

    IPC: H03K17/00

    CPC classification number: G11C27/026

    Abstract: A positive/negative sampling and holding (S/H) circuit is disclosed herein. The positive/negative S/H circuit includes an operational amplifier, a first capacitor, a second capacitor being parallel with the first capacitor and forming an integration circuit with the operational amplifier, and several discharge switches correspondingly connecting discharge paths of the first and the second capacitors to control the first and the second capacitors to output a first sampling signal and a second sampling signal respectively, and herein, the first and the second sampling signals has the same magnitude but opposite voltage polarities.

    Abstract translation: 本文公开了正/负采样和保持（S / H）电路。 正/负S / H电路包括运算放大器，第一电容器，与第一电容器并联并与运算放大器形成积分电路的第二电容器，以及相应地连接第一和第二电容器的放电路径的多个放电开关 用于控制第一和第二电容器以分别输出第一采样信号和第二采样信号的电容器，这里，第一和第二采样信号具有相同的幅度但是相反的电压极性。

    Device and method for preventing the influence of conducting material from point detection of projected capacitive touch panel
    18.
    发明授权
    Device and method for preventing the influence of conducting material from point detection of projected capacitive touch panel 有权
    用于防止投射电容式触摸面板的点检测导电材料的影响的装置和方法

    公开(公告)号：US08546705B2

    公开(公告)日：2013-10-01

    申请号：US12407100

    申请日：2009-03-19

    Applicant: Chin-Fu Chang ,  Yu-Han Lin ,  Cheng-Han Lee

    Inventor： Chin-Fu Chang ,  Yu-Han Lin ,  Cheng-Han Lee

    IPC: G06F3/044 ,  G06F3/041 ,  G06F3/045 ,  G08C21/00

    CPC classification number: G06F3/044 ,  G06F3/0418

    Abstract: This invention provides a device for preventing the influence of conducting material from point detection of projected capacitive touch panel. The device includes a first sensing layer having a plurality of first axial conductive lines isolated from each other and electrically connected to a plurality of first outside-connection conducting wires correspondingly, a second sensing layer having a plurality of second axial conductive lines isolated from each other and electrically connected to a plurality of second outside-connection conducting wires correspondingly, a signal driving line electrically connecting to the first and the second outside-connection conducting wires to provide a first sensing signal, and a sensing unit electrically connecting the first and the second outside-connection conducting wires to sense the sensing signal on the first and the second axial conductive lines. Wherein, the second sensing layer is on a dielectric layer, the first sensing layer, and a substrate in sequence.

    Abstract translation: 本发明提供了一种用于防止投影电容式触摸面板从点检测引导材料的影响的装置。 该装置包括第一感测层，其具有彼此隔离并且与多个第一外部连接导线相对地电连接的多个第一轴向导线，具有彼此隔离的多个第二轴向导线的第二感测层 并且相应地电连接到多个第二外部连接导线，信号驱动线电连接到第一和第二外部连接导线以提供第一感测信号;以及感测单元，电连接第一和第二外部连接导线 外部连接导线以感测第一和第二轴向导线上的感测信号。 其中，第二感测层依次在电介质层，第一感测层和衬底上。

    Capacitive touch sensitive display with dummy pads and without rear shielding layer
    19.
    发明授权
    Capacitive touch sensitive display with dummy pads and without rear shielding layer 有权
    电容式触摸屏显示，带虚拟垫片，无背面屏蔽层

    公开(公告)号：US08502794B2

    公开(公告)日：2013-08-06

    申请号：US13211591

    申请日：2011-08-17

    Applicant: Chin-Fu Chang

    Inventor： Chin-Fu Chang

    IPC: G06F3/041

    CPC classification number: G06F3/044 ,  G06F3/0416 ,  G06F3/0418 ,  G06F2203/04103 ,  G06F2203/04104 ,  G06F2203/04107 ,  G06F2203/04111

    Abstract: The present invention provides a mutual capacitive multi-touch screen. The conductive strip pattern allows that, when a touch range of each external conductive object on the mutual capacitive multi-touch screen is larger than a predetermined condition, capacitive coupling between each external conductive object and first conductive strip is greater than capacitive coupling between each external conductive object and second conductive strip, such that the proportion of a driving signal flowing out of the first conductive strip via at least one first external conductive object in the external conductive objects and into the second conductive strip via at least one second external conductive object in the external conductive objects decreases as the number of second external conductive objects increases.

    Abstract translation: 本发明提供一种互电容式多点触摸屏。 导电条图案允许当互电容多点触摸屏上的每个外部导电物体的触摸范围大于预定条件时，每个外部导电物体和第一导电条之间的电容耦合大于每个外部导电物体之间的电容耦合 导电物体和第二导电带，使得驱动信号的比例通过外部导电物体中的至少一个第一外部导电物体流出第一导电条，并经由至少一个第二外部导电物体流入第二导电条， 外部导电物体随着第二外部导电物体的数量增加而减小。

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