Infrared detection element, infrared detector, and infrared type gas sensor
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United States of America Patent
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Dec 27, 2016
Grant Date -
Dec 24, 2015
app pub date -
Jan 20, 2014
filing date -
Jan 20, 2014
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Abstract
An infrared detection element includes first and second pyroelectric elements which are arranged in a single pyroelectric substrate. First pyroelectric element includes a first surface electrode, a first back face electrode, and a first portion interposed between first surface and back face electrodes. First portion is provided as part of pyroelectric substrate. Second pyroelectric element includes a second surface electrode, a second back face electrode, and a second portion interposed between second surface and back face electrodes. Second portion is provided as part of pyroelectric substrate. Pyroelectric substrate is provided in part thereof surrounding first pyroelectric element with a slit shaped along an outer periphery of first pyroelectric element. Slit is formed out of regions in which a first surface wiring and a first back face wiring are disposed. Part of pyroelectric substrate surrounding second pyroelectric element is continuously formed over an entire circumference of second portion.
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