Fingerprint Recognition Device, Display Substrate and Display Apparatus

    公开(公告)号:US20190294850A1

    公开(公告)日:2019-09-26

    申请号:US16316457

    申请日:2018-03-08

    Abstract: The present disclosure discloses a fingerprint recognition device, a display substrate and a display apparatus. The fingerprint recognition device includes: at least one fingerprint detection component; at least one fingerprint recognition signal line, the fingerprint detection component outputs a detection current to the fingerprint recognition signal line; at least one noise reduction circuit serially coupled in the fingerprint recognition signal line, the noise reduction circuit being a resistive component; and a fingerprint determination circuit coupled to the fingerprint recognition signal line, configured to determine a morphology of a fingerprint according to a current signal, subjected to a noise reduction by the noise reduction circuit and transmitted by the fingerprint recognition signal line. The fingerprint recognition device can filter out the current generated by coupling the fingerprint recognition signal line with other data lines, the interference with the detection current is reduced, the accuracy of the fingerprint recognition is improved.

    DISPLAY PANEL AND DISPLAY DEVICE
    3.
    发明申请

    公开(公告)号:US20190180674A1

    公开(公告)日:2019-06-13

    申请号:US16089857

    申请日:2017-10-24

    Abstract: Provided is a display panel comprising including: a base substrate; a plurality of pixel units, each of which is provided with a light emitting structure, each light emitting structure includes a first electrode, a light emitting layer, and a second electrode sequentially stacked on the base substrate; a plurality of pixel circuits respectively disposed in the pixel units for driving the light emitting structure to emit light; a deforming layer disposed above the second electrodes of the light emitting structures; and one or more heating control circuits respectively disposed in different pixel units and each electrically connected to the second electrode of the light emitting structure in a corresponding pixel unit, the heating control circuit is configured to control the second electrode of the light emitting structure in the corresponding pixel unit to generate heat so that the hardness of the deforming layer above the second electrode changes.

    ULTRASONIC FINGERPRINT SENSOR, DISPLAY SUBSTRATE AND DRIVING METHOD THEREOF, AND DISPLAY DEVICE

    公开(公告)号:US20210334491A1

    公开(公告)日:2021-10-28

    申请号:US16316493

    申请日:2018-02-12

    Abstract: The present disclosure provides an ultrasonic fingerprint sensor, a display substrate, a driving method thereof and a display device. The ultrasonic fingerprint sensor includes: a base substrate; a driving structure provided on the base substrate and configured to transmit an ultrasonic signal; a receiving structure provided on the base substrate and configured to receive the ultrasonic signal reflected by a finger, and convert the ultrasonic signal into an electrical signal for determining fingerprint information, the driving structure and the receiving structure are provided in a same plane. Since the driving structure and the receiving structure of the ultrasonic fingerprint sensor of the present disclosure are in a same plane, the driving structure can be closer to the touch body (for example, a finger), which is advantageous for the ultrasonic waves generated by the driving structure to reach the finger to improve the touch accuracy.

    TOUCH PANEL AND DISPLAY APPARATUS
    8.
    发明申请

    公开(公告)号:US20190156097A1

    公开(公告)日:2019-05-23

    申请号:US15743583

    申请日:2017-07-07

    Abstract: The present application provides a touch panel and a display apparatus comprising the touch panel. The touch panel comprises an array substrate and a fingerprint identification substrate, the array substrate comprises a first base and a plurality of pixel units provided on the first base, each of the pixel units comprises a thin film transistor and an organic light emitting diode, the fingerprint identification substrate comprises a second base and a plurality of fingerprint identification devices provided on the second base, the fingerprint identification substrate is located at a side of the first base distal to the pixel units, the array substrate further comprises a light blocking layer and a via-hole provided between at least a portion of the pixel units adjacent to each other, the via-hole is formed in the light blocking layer so that light emitted by the organic light emitting diode is reflected by a surface of a touch terminal to irradiate onto more than one of the fingerprint identification devices, the surface of the touch terminal comprises ridges and valleys, light reflected by the ridges and the valleys of the surface of the touch terminal passes through the via-hole to irradiate onto different ones of the fingerprint identification devices respectively.

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