Patent ID: 6121615
Filing Date: 2000-09-19
Classification: G01J,H01L

Abstract:
An infrared radiation sensitive device comprising:a pyroelectric unit having a parallelepiped shape including first and second opposed major surfaces separated by at least first and second side surfaces extending there between, one of said major surfaces being a planar light receiving surface having a length and a width, a thickness of said pyroelectric unit as measured between said first and second major surfaces being smaller than said length and width of said major surfaces, said pyroelectric unit including a plurality of pyroelectric layers separated by respective planar internal electrodes which extend parallel to one another and generally perpendicular to said light receiving surface, edges o f said internal electrodes alternatively extending to said first or said second side surfaces, said pyroelectric layers being polarized in a direction extending parallel to both said planar light receiving surface and said planar internal electrodes;a first electrode located on said first side surface of said pyroelectric unit and being electrically coupled to those said internal electrodes which extend to said first side surface; anda second external electrode located on said second side surface of said pyroelectric unit and being electrically coupled to those said internal electrodes which extend to said second side surface.