Patent ID: 7157709
Filing Date: 2007-01-02
Classification: G01J

Abstract:
1. An infrared sensor package comprising: a dielectric support molded from a plastic material, said support being formed with a sensor mount for securing a pyroelectric element thereon and with an IC mount for securing an IC chip that processes a signal from said pyroelectric element, a base carrying said dielectric support, said base having a plurality of I/O pins extending therethrough for electrical connection of said IC chip with an external circuit, a cover secured to said base to provide a space therebetween for accommodating therein dielectric support, sensor conductors formed on the side of said support for electrical interconnection between said pyroelectric element and said IC chip, I/O conductors formed on the side of the said support for electrical interconnection between said IC chip and said I/O pins, said sensor conductors as well as said I/O conductors being embedded within with said dielectric support to be integral therewith, wherein said sensor package includes a first metal-shield and a second metal-shield which are embedded into said support in a spaced relation from each other adjacent to said IC mount for shielding said IC chip, said first metal-shield is electrically connected to a ground line of said IC said second metal-shield is electrically connected to a portion of said IC chip having an electrical potential higher than said ground line, and wherein said second metal-shield comprises a vertical segment embedded in said support behind said IC mount and a horizontal segment bent from the upper end of said vertical segment for shielding said IC chip from said pyroelectric element.