Electronic circuit having display driving function, touch sensing function and fingerprint sensing function

A display panel, comprising:

• a plurality of pixels and touch sensors;
• a plurality of data lines, coupled to the pixels and configured to receive display driving signals;
• a plurality of fingerprint sensors, configured to sense a fingerprint image and generate fingerprint sensing signals corresponding to the fingerprint image;
• a plurality of fingerprint sensing lines, coupled to the fingerprint sensors and configured to transmit the fingerprint sensing signals;
• and
• a switch circuit, comprising a plurality of first switch units coupled to the data lines and a first part of the fingerprint sensing lines and a plurality of second switch units coupled to a second part of the fingerprint sensing lines, wherein the first switch units are switched to receive the display driving signals from an electronic circuit in a first time interval, and the first switch units and the second switch units are switched to transmit the fingerprint sensing signals to the electronic circuit in a second time interval,
• wherein each of the first switch units comprises:
• a plurality of first switch elements, switched to receive the display driving signals from the electronic circuit in the first time interval;
• and
• one or more second switch elements, switched to transmit the fingerprint sensing signals to the electronic circuit in the second time interval,
• wherein the switch circuit comprises a plurality of first terminals coupled to the data lines and the fingerprint sensing lines and a plurality of second terminals configurable to be coupled to the electronic circuit,
• wherein each of the first switch units comprises:
• the plurality of first switch elements, coupled between respective first part of the first terminals and one of the second terminals;
• and
• the one or more second switch elements, coupled between respective second part of the first terminals and the one of the second terminals.

An electronic device, comprising:

• a display panel comprising touch sensors and fingerprint sensors;
• and
• an electronic circuit, configurable to be coupled to the display panel and adapted to drive the display panel with display driving signals and receive fingerprint sensing signals corresponding to a fingerprint image from the fingerprint sensors,
• wherein the electronic circuit comprises a first switch circuit, the first switch circuit is located outside the display panel and is electrically coupled to a second switch circuit that is located inside the display panel via a transmission line, the first switch circuit comprises a plurality of first switch elements and a plurality of second switch elements, and the electronic circuit generates control signals for controlling the first switch circuit, so as to transmit the display driving signals to the display panel through a first part of the first switch elements in a first time interval, and receive the fingerprint sensing signals from the fingerprint sensors through the second switch elements in a second time interval, wherein the plurality of first switch elements and the plurality of second switch elements are directly coupled to the transmission line,
• wherein the plurality of first switch elements and the plurality of second switch elements are not arranged on the display panel.