Patent ID: 11935452
Assignee: NOVATEK MICROELECTRONICS CORP.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. An electronic circuit, for operating with a display panel comprising touch sensors and fingerprint sensors, the electronic circuit comprising:
a first circuit, configured to generate display driving signals for driving data lines of the display panel to display image;
a second circuit, configured to receive fingerprint sensing signals corresponding to a fingerprint image from the fingerprint sensors;
a third circuit, configured to determine a touch information according to touch sensing signals from the touch sensors;
a first switch circuit, comprising a plurality of first terminals configurable to be coupled to the display panel, wherein the first switch circuit comprises a plurality of first switch units, each of the first switch units comprises:
a first switch element, coupled between the first circuit and a corresponding first terminal among the first terminals and is controlled to transmit the display driving signals from the first circuit to the corresponding first terminal, and
a second switch element, coupled between the second circuit and the corresponding first terminal and is controlled to transmit the fingerprint sensing signals from the corresponding first terminal to the second circuit, wherein the second switch element is controlled to turn on according to the touch information;
a control circuit, configured to:
control the first switch circuit to transmit the display driving signals in a first time interval,
control the first switch circuit to transmit the fingerprint sensing signals in a second time interval, and
control the third circuit to receive the touch sensing signals in a third time interval; and
a grouping circuit, coupled between the second circuit and the first switch circuit, wherein the second switch elements of the plurality of first switch units are grouped into a plurality of groups and connected to the second circuit through the grouping circuit, and each group corresponds to a fingerprint sensing channel of the second circuit.