Display device providing space for fingerprint driver without reducing space for display pixels
A display device includes a substrate that includes a display area that displays an image and a non-display area disposed around the display area, display pixels that each include a light emitting element disposed in the display area and a pixel driver connected to the light emitting element, and light sensing pixels that each include a light receiving element and a fingerprint driver connected to the light receiving element. The fingerprint driver includes at least one transistor, the light receiving element is disposed in the display area, and the at least one transistor of the fingerprint driver is disposed in the non-display area.
1 . A display device, comprising:
a substrate of a display panel that includes a display area that displays an image and a non-display area disposed around the display area;
display pixels that each include a light emitting element disposed in the display area and a pixel driver connected to the light emitting element;
light sensing pixels that each include a light receiving element and a fingerprint driver connected to the light receiving element, wherein the fingerprint driver includes at least one transistor, the light receiving element is disposed in the display area, and the at least one transistor of the fingerprint driver is disposed in the non-display area;
a connection line connected to an anode electrode of the light receiving element and to the at least one transistor of the fingerprint driver;
a fingerprint scan driver disposed in the non-display area and that outputs a fingerprint scan signal to the at least one transistor of the fingerprint driver through a fingerprint scan line; and
a sensing line disposed in the non-display area and that connects the at least one transistor of the fingerprint driver to a fingerprint detecting circuit that detects a fingerprint based on sensing voltages received through the sensing line,
wherein the pixel driver further comprises a driving transistor that controls a driving current that flows through the light emitting element according to a data voltage transmitted to a gate electrode and a first transistor that connects the gate electrode of the driving transistor to a driving voltage line through which a driving voltage is transmitted according to a display initialization signal, and
wherein the fingerprint driver includes a first sensing transistor that connects the connection line to the sensing line according to the fingerprint scan signal of the fingerprint scan line and a second sensing transistor that connects the connection line to the driving voltage line through which the driving voltage is transmitted according to a fingerprint initialization signal of a fingerprint initialization line.
2 . The display device of claim 1 , wherein the fingerprint driver is disposed on a first side of the display area.
3 . The display device of claim 2 , further comprising:
a display scan driver disposed in the non-display area and that outputs scan signals to the pixel driver.
4 . The display device of claim 3 , wherein the display scan driver is disposed on a second side of the display area.
5 . The display device of claim 4 , wherein the fingerprint scan driver is disposed at a corner where the first side and the second side of the display area meet.
6 . The display device of claim 4 , wherein the fingerprint scan driver is disposed at a corner where the first side and the second side of the display area meet and on the first side of the display area.
7 . The display device of claim 3 , wherein the fingerprint scan driver is disposed on the first side of the display area.
8 . The display device of claim 1 , wherein the pixel driver further comprises:
a second transistor that connects a source electrode of the driving transistor to a data line according to a display write signal; and
a third transistor that connects an anode electrode of the light emitting element to the driving voltage line according to a display control signal.
9 . The display device of claim 8 , wherein the fingerprint scan signal is identical to the display initialization signal.
10 . The display device of claim 8 , wherein the fingerprint scan signal is identical to the display control signal.
11 . The display device of claim 8 , wherein the first sensing transistor is disposed in the non-display area.
12 . The display device of claim 8 , wherein the second sensing transistor is disposed in the non-display area.
13 . The display device of claim 8 , wherein the fingerprint initialization signal is identical to the display write signal.
14 . An electronic device, comprising:
a substrate of a display panel that includes a display area that displays an image and a non-display area disposed around the display area;
light sensing pixels that each include a light receiving element and a fingerprint driver connected to the light receiving element, wherein the fingerprint driver includes a plurality of transistors, the light receiving element is disposed in the display area, at least one of the plurality of transistors of the fingerprint driver is disposed in the non-display area, and another one of the plurality of transistors is disposed in the display area; and
a connection line connected to an anode electrode of the light receiving element and to the at least one of the plurality of transistors of the fingerprint driver;
a fingerprint scan driver disposed in the non-display area and that outputs fingerprint scan signals to the at least one of the plurality of transistors of the fingerprint driver through a fingerprint scan line; and
a sensing line disposed in the non-display area and that connects the at least one of the plurality of transistors of the fingerprint driver to a fingerprint detecting circuit that detects a fingerprint based on sensing voltages received through the sensing line,
wherein the fingerprint driver includes:
a first sensing transistor that connects the connection line to the sensing line according to the fingerprint scan signals of the fingerprint scan line; and
a second sensing transistor that connects the connection line to a driving voltage line through which a driving voltage is transmitted according to a fingerprint initialization signal of a fingerprint initialization line, and
wherein the connection line is in direct contact with the anode electrode of the light receiving element and an electrode of the at least one of the plurality of transistors of the fingerprint driver.