Display device
Provided is a display device comprising a display panel, a metal plate on a bottom surface of the display panel, the metal plate including a first surface facing the bottom surface of the display panel and a second surface opposite to the one surface, and a fingerprint sensor overlappingly disposed on the second surface of the metal plate, wherein the metal plate includes an indentation groove recessed in a direction toward the first surface from the second surface of the metal plate, and the fingerprint sensor is disposed on the second surface of the metal plate on which the indentation groove is formed.
1 . A display device comprising:
a display panel;
a metal plate disposed on a bottom surface of the display panel; and
a fingerprint sensor disposed on the metal plate,
wherein the metal plate includes:
a first metal plate part disposed on the bottom surface of the display panel, the first metal plate part including a first surface facing the bottom surface of the display panel and a second surface opposite to the first surface; and
a second metal plate part disposed on the second surface of the first metal plate part, and including an upper surface contacting the second surface of the first metal plate part and parallel to the second surface of the first metal plate part,
wherein a through hole exposing a portion of the second surface of the first metal plate part is formed in the second metal plate part, and
the fingerprint sensor is disposed on the portion of the second surface of the first metal plate part in the through hole.
2 . The display device of claim 1 , wherein a width of the fingerprint sensor is smaller than a width of the through hole.
3 . The display device of claim 1 , wherein the fingerprint sensor includes an ultrasonic fingerprint sensor, and the ultrasonic fingerprint sensor performs fingerprint recognition by comparing an incident ultrasonic wave incident upward from the ultrasonic fingerprint sensor with a fingerprint reflected ultrasonic wave reflected from a fingerprint.
4 . The display device of claim 1 , further comprising:
a bonding member between the fingerprint sensor and the filling member, and
wherein a hardness of the filling member is greater than a hardness of the bonding member.
5 . The display device of claim 1 , wherein an impedance of the filling member is set within an error of about 5 MPa*m/s*10 −6 of an impedance of the display panel.