Infrared detector based on pyroelectric material

Details Infrared detector based on pyroelectric material Infrared detector based on pyroelectric material

1990-06-14

1992-02-11

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250332, G01J 520

Patent

active

050878166

ABSTRACT:
An infrared detector based on pyroelectric material, of the type associated with a reading circuit prepared on a semiconductor substrate, the substrate also supporting conductive blocks designed to transmit the electrical signals generated by the pyroelectric material towards the reading circuit. Each conductive block corresponds to a picture element or pixel, wherein the detector is formed by a layer of pyroelectric material deposited on that side of the semiconductor layer having the conductive blocks. The pyroelectric material has a thermal conductivity of K<1 W/m..degree.K., a counter-electrode covering the layer of pyroelectric material on the side opposite the conductive blocks.

REFERENCES:
patent: 4532424 (1985-07-01), Cheung
patent: 4755707 (1988-07-01), Nakaya et al.
patent: 4926051 (1990-05-01), Turnbull
Patent Abstracts of Japan, vol. 12, No. 228, (E627)(3075), Jun. 28, 1988, & JP-A-63 20 868, Jan. 28, 1988, A. Kaneko, "Pyroelectric Infrared Image Sensor".

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