A display device comprising: a display panel; a metal plate, LP, disposed on a bottom surface of the display panel and configured to support the display panel, wherein the metal plate is provided with a through hole, PH, extending from a top surface of the metal plate to a bottom surface of the metal plate, and wherein: a width of the through hole, PH, decreases from the top surface of the metal plate to the bottom surface of the metal plate, or a width of the through hole, PH, decreases from the top surface of the metal plate, to a first point of the through hole which is disposed between the top surface of the metal plate and the bottom surface of the metal plate and then increases from the first point to the bottom surface, or a width of the through hole increases from the top surface of the metal plate to a first point of the through hole which is disposed between the top surface of the metal plate and the bottom surface of the metal plate and then decreases from the first point to the bottom surface, and wherein: a filling member, RL, is disposed on the bottom surface of the display panel, wherein the filling member, RL, fills the through hole, and wherein a material of the metal plate is different from a material of the filling member; the display device further comprising: a fingerprint sensor disposed on a bottom surface of the filling member; and a bonding member, AM5, disposed between the fingerprint sensor and the filling member to bond the fingerprint sensor to the filling member, wherein a hardness of the filling member is greater than a hardness of the bonding member. a display panel; a metal plate, LP, disposed on a bottom surface of the display panel and configured to support the display panel, wherein the metal plate is provided with a through hole, PH, extending from a top surface of the metal plate to a bottom surface of the metal plate, and wherein: a width of the through hole, PH, decreases from the top surface of the metal plate to the bottom surface of the metal plate, or a width of the through hole, PH, decreases from the top surface of the metal plate, to a first point of the through hole which is disposed between the top surface of the metal plate and the bottom surface of the metal plate and then increases from the first point to the bottom surface, or a width of the through hole increases from the top surface of the metal plate to a first point of the through hole which is disposed between the top surface of the metal plate and the bottom surface of the metal plate and then decreases from the first point to the bottom surface, and wherein: a filling member, RL, is disposed on the bottom surface of the display panel, wherein the filling member, RL, fills the through hole, and wherein a material of the metal plate is different from a material of the filling member; the display device further comprising: a fingerprint sensor disposed on a bottom surface of the filling member; and a bonding member, AM5, disposed between the fingerprint sensor and the filling member to bond the fingerprint sensor to the filling member, wherein a hardness of the filling member is greater than a hardness of the bonding member. a width of the through hole, PH, decreases from the top surface of the metal plate to the bottom surface of the metal plate, or a width of the through hole, PH, decreases from the top surface of the metal plate, to a first point of the through hole which is disposed between the top surface of the metal plate and the bottom surface of the metal plate and then increases from the first point to the bottom surface, or a width of the through hole increases from the top surface of the metal plate to a first point of the through hole which is disposed between the top surface of the metal plate and the bottom surface of the metal plate and then decreases from the first point to the bottom surface, and wherein: a filling member, RL, is disposed on the bottom surface of the display panel, wherein the filling member, RL, fills the through hole, and wherein a material of the metal plate is different from a material of the filling member; the display device further comprising: a fingerprint sensor disposed on a bottom surface of the filling member; and a bonding member, AM5, disposed between the fingerprint sensor and the filling member to bond the fingerprint sensor to the filling member, wherein a hardness of the filling member is greater than a hardness of the bonding member. a filling member, RL, is disposed on the bottom surface of the display panel, wherein the filling member, RL, fills the through hole, and wherein a material of the metal plate is different from a material of the filling member; the display device further comprising: a fingerprint sensor disposed on a bottom surface of the filling member; and a bonding member, AM5, disposed between the fingerprint sensor and the filling member to bond the fingerprint sensor to the filling member, wherein a hardness of the filling member is greater than a hardness of the bonding member. a fingerprint sensor disposed on a bottom surface of the filling member; and a bonding member, AM5, disposed between the fingerprint sensor and the filling member to bond the fingerprint sensor to the filling member, wherein a hardness of the filling member is greater than a hardness of the bonding member.