Patent ID: 8362583

Claim:
A pyroelectric detector comprising: a support member including a first side and a second side opposite from the first side, with the second side facing a cavity; and a pyroelectric detection element mounted on the first side of the support member, the pyroelectric detection element including a capacitor including a first electrode, a pyroelectric body and a second electrode, the first electrode being mounted on the support member and including a first region in which the pyroelectric body is disposed and a second region extending from the first region, the pyroelectric body being disposed over the first electrode in the first region, and the second electrode being disposed over the pyroelectric body, an interlayer insulation layer covering a surface of the capacitor, and forming a first contact hole passing through to the first electrode in the second region, and a second contact hole passing through to the second electrode, a first plug embedded in the first contact hole, a second plug embedded in the second contact hole, a first electrode wiring layer formed on the interlayer insulation layer and on the first side of the support member, and connected to the first plug, and a second electrode wiring layer formed on the interlayer insulation layer and on the first side of the support member, and connected to the second plug, a thermal conductivity of material of the second electrode wiring layer being lower than a thermal conductivity of material of a portion of the second electrode connected to the second plug.