An X-ray detection apparatus including a case； a circuit board disposed in the case； a connection circuit unit disposed in the case, where the connection circuit unit is electrically connected with the circuit board and includes an integrated circuit (“IC”) chip； a detection panel configured to be inserted into and ejected from the case, where the detection panel is electrically connected to the connection circuit unit； and a contact support unit disposed in the case, wherein the contact support unit allows the connection circuit unit and the detection panel to contact each other by applying a force on the connection circuit unit.
