Radiation image detector
A radiation image detector generates electric charge by irradiation with radiation and records a radiation image. The radiation image detector has an electrode layer including a multiplicity of first linear electrodes connected to a charge amplifier for detecting the electric charge and a multiplicity of second linear electrodes which is grounded. In the radiation image detector, a ground pattern is formed in the periphery of the electrode layer, and the multiplicity of second linear electrodes is connected to the ground pattern.
1 . A radiation image detector comprising:
an electric charge generation layer for generating electric charge by irradiation with an electromagnetic wave for recording which carries a radiation image; and
an electrode layer including a multiplicity of first linear electrodes connected to a detection unit for detecting the electric charge generated in the electric charge generation layer as an electric signal and a multiplicity of second linear electrodes which is grounded, wherein each of the multiplicity of first linear electrodes and each of the multiplicity of second linear electrodes are alternately arranged parallel to each other with a predetermined space therebetween, and wherein the electric charge generation layer and the electrode layer are superposed one on the other in this order, and wherein a ground pattern is formed in the periphery of the electrode layer, and wherein the multiplicity of second linear electrodes is connected to the ground pattern.
2 . A radiation image detector, as defined in claim 1 , wherein the ground pattern is formed so as to surround the multiplicity of first linear electrodes and the multiplicity of second linear electrodes.
3 . A radiation image detector, as defined in claim 1 , wherein an end of each of a plurality of linear electrode arrays, each including a predetermined plurality of second linear electrodes adjacent to each other, is connected to the ground pattern, and wherein the end of each of the plurality of linear electrode arrays, connected to the ground pattern, is opposite to the end of a linear electrode array adjacent to each of the plurality of linear electrode arrays, connected to the ground pattern.
4 . A radiation image detector, as defined in claim 1 , wherein the detection unit is a charge amplifier IC (integrated circuit), and wherein the ground pattern includes an amplifier ground portion to which a ground terminal of the charge amplifier IC is connected.