Patent ID: 8253111

Claim:
An imaging apparatus comprising: a semiconductor layer for converting light or radioactive ray information into charge information; an active matrix substrate for reading the charge information; an amplifier circuit connected to the active matrix substrate to amplify and convert the read charge information into a voltage; and a base substrate internally provided with a flow passage for allowing a temperature-control heat transfer medium to pass therethrough, wherein the active matrix substrate is disposed relative to a front surface of the base substrate, and the amplifier circuit is disposed relative to a rear surface of the base substrate, wherein a portion of the base substrate on the side of the rear surface thereof is partially concaved to have a thinned portion, and wherein the amplifier circuit is disposed relative to a rear surface of the thinned portion, and the flow passage is formed in the remaining portion of the base substrate other than the thinned portion; heat-conducting means provided to extend between the amplifier circuit and the remaining portion of the base substrate; and heat-insulating means provided between the amplifier circuit and the thinned portion of the base substrate.