Infrared-ray image sensor

Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system

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Details

250332, 2503384, G01J 102

Patent

active

057570086

ABSTRACT:
A power source is electrically connected to a capacitance element arranged corresponding to either a Shottky barrier diode (SBD) or a bolometer at a predetermined timing through a resistor by a driving pulse provided from a horizontal scanning circuit and a driving pulse provided from a vertical scanning circuit. At this time, charges charged by a voltage of the power source in the Shottky barrier diode are discharged by either a reverse current of the Shottky barrier diode or a current through the bolometer, immediately after the power source is disconnected from the capacitance element, arranged for either the Shottky barrier diode or the bolometer. After a storing period of time, when the power source and the capacitance element are connected, the charges corresponding to the charge amount discharged for the storing period of time are charged in the capacitance element. At this time, a voltage according to the charge amount is provided. Thus, an infrared-ray image sensor can be obtained using a Shottky barrier diode or a bolometer.

REFERENCES:
patent: 4962303 (1990-10-01), Chu
patent: 5021663 (1991-06-01), Hornbeck
M. Kumura et al., "Schottky Barrier Thermistor on the Micro-Air-Bridge", The 7th International Conference on Solid-State Sensors and Actuators, pp. 746-749.

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