Patent ID: 6203673
Filing Date: 2001-03-20
Classification: B81B,G01J,G01K,H01L

Abstract:
A method of producing a thin-film platinum temperature-sensitive resistor for a thin-film microstructure sensor, said method comprising the steps of:forming a first insulation layer on a substrate;forming a platinum layer on the first insulation layer of the substrate by a sputtering process;forming a second insulation layer on the platinum layer; andperforming a patterning of the platinum layer through etching by using the second insulation layer as a mask, so that a thin-film platinum temperature-sensitive resistor is produced on the first insulation layer of the substrate,wherein said sputtering process is performed under sputtering conditions in which a radio-frequency power is set in a range of 0.54 W/cm.sup.2 to 2.74 W/cm.sup.2 and a temperature of the substrate is set in a range of 100.degree. C. to 500.degree. C. in such a manner that a maximum crystal grain size of the platinum layer is above 800 .ANG..