SAMPLING CIRCUIT, OPTICAL DETECTION SYSTEM, DISPLAY APPARATUS AND SAMPLING METHOD

    公开(公告)号:US20240210239A1

    公开(公告)日:2024-06-27

    申请号:US17912888

    申请日:2021-10-29

    CPC classification number: G01J1/44 G01R15/04 G01R19/0038

    Abstract: A sampling circuit, including a voltage divider circuit, a switch circuit and a comparator circuit; wherein first terminals of resistance voltage divider sub-circuits in the voltage divider circuit are electrically connected to voltage division output terminals, respectively, and the resistance voltage divider sub-circuits are configured to perform resistance voltage division processing according to the voltages at first and second input terminals and write divided voltages to the voltage division output terminals, respectively; the voltage division output terminals are electrically connected to the third input terminal through corresponding switch sub-circuits in the switch circuit, respectively, and each switch sub-circuit is configured to control connection/disconnection between a corresponding voltage division output terminal and the third input terminal; the comparator circuit is electrically connected to the sampling output terminal, and is configured to compare voltages at the third and fourth input terminals and provide comparison results to the sampling output terminal.

    TOUCH PANEL AND POSITIONING METHOD THEREOF

    公开(公告)号:US20210096695A1

    公开(公告)日:2021-04-01

    申请号:US17036911

    申请日:2020-09-29

    Abstract: The present disclosure provides a touch panel and a positioning method thereof. The touch panel includes: a transparent conductive film layer including a plurality of first self-capacitance touch electrodes arranged along a first direction, wherein the plurality of first self-capacitance touch electrodes are configured to detect a coordinate of a touch point in the first direction, at least one of the plurality of first self-capacitance touch electrodes is a transparent conductive film block extending along a second direction, and the first direction intersects with the second direction; and a wire layer including a plurality of second self-capacitance touch electrodes arranged along the second direction, wherein the plurality of second self-capacitance touch electrodes are configured to detect a coordinate of the touch point in the second direction, and at least one of the plurality of second self-capacitance touch electrodes is a group of wires extending along the first direction.

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