Patent ID: 8692348
Filing Date: 2014-04-08
Classification: G01J,H01L

Abstract:
1. A photodetector comprising: a first bolometer film supported on a surface of a substrate while spaced apart from the surface of the substrate; a second bolometer film supported on the surface of the substrate while spaced apart from the surface of the substrate; a first metal film formed on a surface of the second bolometer film via an insulating film, wherein the surface of the second bolometer film faces the substrate; a plurality of metal columns thermally connected with the first metal film and the substrate; a first insulating film formed on a surface of the first bolometer film facing a substrate; a second insulating film formed on a surface of the second bolometer film facing a substrate, a bolometer element having the first bolometer film; and a reference element having the second bolometer film, one side of the insulating film and the first metal film are physically in contact, and another side of the insulating film and a bolometer film are physically in contact, and the insulating film is present between a plurality of metal columns and a bolometer film, the first bolometer film and the second bolometer film are separate from each other, the first insulating film and the second insulating film are separate from each other, and the first bolometer film does not include a plurality of metal columns.