Patent ID: 8814426
Filing Date: 2014-08-26
Classification: G01J

Abstract:
1. An infrared sensor comprising: an electrical insulating film sheet; first and second temperature sensor devices which are provided on one side of the electrical insulating film sheet, said sensor devices being located at a distance from each other; a pair of contact electrodes with which the first and second temperature sensor devices are in contact, respectively, said contact electrodes being formed on the one side of the electrical insulating film sheet; an infrared absorbing film which is provided on the other side of the electrical insulating film sheet, and is positioned opposite the first temperature sensor device across the electrical insulating film sheet; and an infrared reflector film which is provided on the other side of the electrical insulating film sheet, and is positioned opposite the second temperature sensor device across the electrical insulating film sheet; wherein the first and second temperature sensor devices respectively comprise: a thermistor element; and a pair of electrode layers, one of which is in contact with the contact electrode, said electrode layers being formed both on upper and lower surfaces of the thermistor element; and further wherein on the one side of the electrical insulating film sheet, there are: a pair of contact side terminal electrodes that are connected with the contact electrodes by contact side pattern wirings in a form of a thin wire; a pair of wire bonding electrodes; and a pair of wire side terminal electrodes that are connected with the wire bonding electrodes by wire side pattern wirings in a form of a thin wire, and wherein, each of the electrode layers which are not in contact with the contact electrodes is connected electrically with each of the wire bonding electrodes by thin metal wiring derived from wire bonding.