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    Touch panel having a master and slave controller and method for driving thereof
    31.
    发明授权
    Touch panel having a master and slave controller and method for driving thereof 有权
    具有主从控制器的触摸面板及其驱动方法

    公开(公告)号：US09268432B2

    公开(公告)日：2016-02-23

    申请号：US13656302

    申请日：2012-10-19

    Applicant: STMicroelectronics Asia Pacific PTE LTD.

    Inventor： Dianbo Guo ,  KienBeng Tan

    IPC: G06F3/041

    CPC classification number: G06F3/0416

    Abstract: In accordance with an embodiment, a method of operating a touch panel includes operating a slave touch panel controller by receiving a synchronization signal from a master touch panel controller of a display driver circuit, and polling a plurality of receive inputs coupled to outputs of an in-cell touch module based on an predetermined pattern.

    Abstract translation: 根据实施例，一种操作触摸面板的方法包括通过从显示驱动器电路的主触摸面板控制器接收同步信号来操作从触摸面板控制器，并且轮询多个接收输入的接收输入 基于预定图案的单元触摸模块。

    TOUCH SCREEN WITH PALM REJECTION IN THE PRESENCE OF CHARGER NOISE
    32.
    发明申请
    TOUCH SCREEN WITH PALM REJECTION IN THE PRESENCE OF CHARGER NOISE 有权
    触电屏幕与PALM拒绝在充电噪声的存在

    公开(公告)号：US20150286297A1

    公开(公告)日：2015-10-08

    申请号：US14245915

    申请日：2014-04-04

    Applicant: STMicroelectronics Asia Pacific Pte. Ltd.

    Inventor： CheeWeng Cheong ,  Leonard Dinu ,  Dianbo Guo ,  Kien Beng Tan

    IPC: G06F3/0354 ,  G06F3/041

    CPC classification number: G06F3/0418

    Abstract: A touch screen device having a touch screen panel and a method for operating a touch screen device are provided. The method includes monitoring, during a noise monitoring phase, channel signals of a first set of channels and a second set of channel of the touch screen panel, detecting a stylus signal in response to a channel signal greater than a stylus threshold and less than a palm threshold, selecting the first set of channels when the stylus signal is detected on at least one channel of the first set of channels and is not detected on the second set of channels, and selecting the second set of channels when the stylus signal is detected on at least one channel of the second set of channels and is not detected on the first set of channels.

    Abstract translation: 提供了一种具有触摸屏面板的触摸屏设备和用于操作触摸屏设备的方法。 该方法包括在噪声监测阶段期间监测第一组通道的通道信号和触摸屏面板的第二组通道，响应于大于触针阈值的通道信号检测触针信号，并小于一个 手掌阈值，当在第一组信道的至少一个信道上检测到触笔信号时选择第一组信道，并且在第二组信道上未检测到第一组信道，并且当检测到触笔信号时选择第二组信道 在第二组信道的至少一个信道上，并且在第一组信道上未检测到。

    Compensation for variations in a capacitive sense matrix
    33.
    发明授权
    Compensation for variations in a capacitive sense matrix 有权

    公开(公告)号：US10209844B2

    公开(公告)日：2019-02-19

    申请号：US15995340

    申请日：2018-06-01

    Applicant: STMicroelectronics Asia Pacific Pte Ltd

    Inventor： Yannick Guedon ,  Sze-Kwang Tan ,  Dianbo Guo

    IPC: G06F3/044 ,  G06F3/041

    Abstract: A readout device for a capacitive sense matrix includes a computer readable storage medium configured to store capacitance data. The capacitance data represents capacitance values of the capacitive sense matrix. The readout device also includes a readout circuit configured to receive a signal from the capacitive sense matrix, the readout circuit being configured based upon the capacitance data. Also described are a readout method and a method of compensating for variations in capacitance.

    Short circuit detection module
    37.
    发明授权
    Short circuit detection module 有权

    公开(公告)号：US09714973B2

    公开(公告)日：2017-07-25

    申请号：US14550415

    申请日：2014-11-21

    Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD

    Inventor： Dianbo Guo ,  EngJye Ng ,  Abhishek Singh

    IPC: G01R31/08 ,  G01R31/28 ,  G01R31/02 ,  G06F3/041 ,  G06F3/044

    CPC classification number: G01R31/025 ,  G01R31/024 ,  G01R31/08 ,  G06F3/0418 ,  G06F3/044 ,  G06F2203/04111

    Abstract: A microelectronic short circuit detection module is disclosed that locates and distinguishes among different types of short circuits in touch screen panels. Individual short circuit detection circuits are coupled to force and sense lines throughout a wire matrix within the touch screen. If the line is shorted to a neighboring line or any other line carrying an opposite logic state, its logic state will be corrupted by the short and will be held at a value opposite that of the intended input signal. Comparing the input and the output therefore provides an indicator of a short circuit to another force or sense line in the wire matrix. A pair of pull up/down stages is engaged to detect whether the short is coupled to power or ground. A threshold resistor can be varied to adjust detection sensitivity. By conducting a serial test, matrix coordinates of the short circuit can be identified.

    Touch screen with palm rejection in the presence of charger noise
    38.
    发明授权
    Touch screen with palm rejection in the presence of charger noise 有权

    公开(公告)号：US09710104B2

    公开(公告)日：2017-07-18

    申请号：US14245915

    申请日：2014-04-04

    Applicant: STMicroelectronics Asia Pacific Pte. Ltd.

    Inventor： CheeWeng Cheong ,  Leonard Dinu ,  Dianbo Guo ,  Kien Beng Tan

    IPC: G06F3/041

    CPC classification number: G06F3/0418

    Abstract: A touch screen device having a touch screen panel and a method for operating a touch screen device are provided. The method includes monitoring, during a noise monitoring phase, channel signals of a first set of channels and a second set of channel of the touch screen panel, detecting a stylus signal in response to a channel signal greater than a stylus threshold and less than a palm threshold, selecting the first set of channels when the stylus signal is detected on at least one channel of the first set of channels and is not detected on the second set of channels, and selecting the second set of channels when the stylus signal is detected on at least one channel of the second set of channels and is not detected on the first set of channels.

    METHOD AND APPARATUS FOR BLOCKING ACCUMULATION OF ELECTRICAL FAST TRANSIENT (EFT) NOISE
    39.
    发明申请
    METHOD AND APPARATUS FOR BLOCKING ACCUMULATION OF ELECTRICAL FAST TRANSIENT (EFT) NOISE 有权
    阻塞电气瞬态（EFT）噪声累积的方法和装置

    公开(公告)号：US20160378222A1

    公开(公告)日：2016-12-29

    申请号：US14753129

    申请日：2015-06-29

    Applicant: STMicroelectronics Asia Pacific Pte Ltd

    Inventor： Chee Weng Cheong ,  EngJye Ng ,  Dianbo Guo ,  Chaochao Zhang ,  Kusuma Adi Ningrat

    IPC: G06F3/044

    CPC classification number: G06F3/044

    Abstract: A charge sensing circuit generates a voltage in a sensing period that is indicative of sensed charge. The generated voltages are accumulated by an accumulator circuit over a number of sensing periods. A noise detection circuit senses when the voltage generated by the charge sensing circuit is outside of a boundary and generates a detection signal in response thereto. A control circuit, in response to the detection signal, controls the accumulator circuit to block accumulation of the voltages generated by the charge sensing circuit during at least the sensing period in which the detection signal is generated. An analog-to-digital converter circuit then converts an accumulated output voltage from the accumulator circuit to a digital value at the end of an accumulation time period that includes the sensing periods. The end of the accumulation time period is delayed by at least one sensing period in response to the detection signal.

    Abstract translation: 电荷感测电路在感测周期中产生指示感测电荷的电压。 所产生的电压在多个感测周期上由累加器电路累积。 噪声检测电路检测由电荷感测电路产生的电压何时在边界之外，并响应于此产生检测信号。 响应于检测信号，控制电路在至少产生检测信号的感测周期期间控制累加器电路阻止由电荷感测电路产生的电压的累积。 然后，模数转换器电路在包括感测周期的累积时间周期结束时将来自累加器电路的累积输出电压转换为数字值。 积累时间段的结束响应于检测信号延迟至少一个感测周期。

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