JPS6454706A - Organic positive temperature coefficient thermistor - Google Patents

Abstract

PURPOSE:To eliminate an oppotunity, when an element assembly is brought into contact with an etchant, and to avoid the generation of abnormality by joining the sheet-shaped organic positive temperature coefficient thermistor element assembly with an electrode forming surface in an insulating film, on the surface of which an electrode consisting of a metallic foil is formed. CONSTITUTION:Pectinate electrodes 2 and 3 composed of an Ni foil are shaped onto one surface of an insulating film 6 made up of high-density polyethylene while the teeth of the comb are entered mutually, and terminals 4 and 5 are fitted respectively at the end sections of the electrodes 2 and 3. Consequently, a sheet-shaped organic positive temperature coefficient thermistor element assembly 1 formed to the same shape as the film 6 is joined onto the film 6, on which the the electrodes 2 and 3 are shaped, through thermocompression bonding, and current is supplied between the terminals 4 and 5 under the state and Joule heat is generated in the element assembly 1 section held by the electrodes 2 and 3. Accordingly, the film and the element assembly are welded and fast stuck positively, and a surface temperature changes within 3 deg.C and temperature distribution is not also altered.