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公开(公告)号：US11327607B1
公开(公告)日：2022-05-10
申请号：US17398000
申请日：2021-08-10
Applicant: Novatek Microelectronics Corp.
Inventor： Yi-Cheng Lin , Che-Chia Hsu
Abstract: A touch detection circuit and a touch detection method are provided. The touch circuit coupled to touch areas of touch panel includes a touch controller and a detection circuit. The touch controller performs a touch detection on the touch areas sequentially. The detection circuit transmits a first detection signal to a boundary area of the touch areas which are not touch detected to receive a first feedback signal. The detection circuit transmits a second detection signal to a corresponding central area of the touch areas which are not touch detected to receive a second feedback signal. The touch controller compares the first feedback signal and the second feedback signal to generate a capacitance variation between the boundary area and the corresponding central area.
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公开(公告)号：US20210397804A1
公开(公告)日：2021-12-23
申请号：US17349948
申请日：2021-06-17
Applicant: Novatek Microelectronics Corp.
Inventor： Yi-Cheng Lin , Yueh-Teng Mai , Jiun-Jie Tsai
Abstract: A driving device for driving a touch display panel with fingerprint sensing function and a driving method therefore are provided. The circuit includes a plurality of touch sensing input terminals, a plurality of fingerprint sensing input terminals, a first touch sensing circuit, a fingerprint sensing circuit, and a second touch sensing circuit. The second touch sensing circuit is coupled to a plurality of second touch sensing electrodes in a fingerprint sensor array of the touch display panel through at least a part of the plurality of fingerprint sensing input terminals. The second touch sensing circuit is configured to perform the second touch sensing operation according to the second touch sensing electrodes in the fingerprint sensor array for compensating a touch sensing result of the first touch sensing operation by the first touch sensing circuit.
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