Patent ID: 8592937

Claim:
A pyroelectric detector comprising: a substrate; a support member; and a pyroelectric detection element supported on the support member, the pyroelectric detection element including a capacitor having a first electrode mounted on the support member, a second electrode opposed to the first electrode, and a pyroelectric body disposed between the first and second electrodes, the first electrode being disposed between the second electrode and the substrate with respect to a direction normal to the substrate, a first reducing gas barrier layer mounted on the second electrode and covering at least the second electrode and the pyroelectric body of the capacitor, and having a first opening that overlaps the second electrode in plan view, an insulating layer covering at least the first reducing gas barrier layer, and having a second opening that overlaps the first opening of the first reducing gas barrier layer in plan view, a plug disposed in the first opening of the first reducing gas barrier layer and the second opening of the insulating layer with the plug being connected to the second electrode, a second electrode wiring layer formed on the insulating layer and connected to the plug, and a second reducing gas barrier layer formed on the insulating layer and the second electrode wiring layer with the second reducing gas barrier layer covering at least the plug, the second reducing gas barrier layer contacting the plug.