A manufacturing method of a large area x-rays detector is provided to obtain various images of the various kinds and to increase the performance of the detector by making the thickness of a bonding layer uniform. A manufacturing method of a large area x-rays detector comprises followings. A sensor panel(110) is set up so that the front face of the sensor panel has the fixed angle with a horizontal plane. Adhesive is sprayed on the upper part of the front face of the sensor panel. An adhesive layer(130) of the fixed thickness is made by making the sprayed adhesive stream down to the lower front face from the upper front face of the sensor panel. A scintillator panel(120) converting X-rays into visible ray is adhered to the front face of a bonding layer. The sensor panel outputs an electric signal after receiving the visible ray. The thickness of the bonding layer is 10~40mum.
