Patent ID: 6835673
Filing Date: 2004-12-28
Classification: H01C

Abstract:
A semiconductor impedance thermal film processing procedure comprising the steps of:(1) preparing a high conductive metal conductive medium and removing stains and suspension particles from the surface of said metal conductive medium; (2) forming a first insulative layer on the surface of said metal conductive medium (3) covering a layer of semiconductor impedance thermal material on said first insulative layer; (4) baking said metal conductive medium at 350Â° C. continuously for 30 minutes and then cooling down said metal conductive medium so as to let said layer of semiconductor impedance thermal material be fixedly bonded to said first insulative layer; (5) printing metal conductor lines on the surface of said layer of semiconductor impedance thermal material, and then baking said metal conductive medium at 350Â° C. continuously for 30 minutes, and then cooling down said metal conductive medium so as to let said metal conductor lines be fixedly bonded to said layer of semiconductor impedance thermal material; (7) covering said metal conductor lines and said layer of semiconductor impedance thermal material with a layer of heat resisting paint containing ceramic powder by means, leaving a part of each said metal conductor line exposed to the outside for the connection of a respective lead out wire; and (8) baking said metal conductive medium at 450Â° C. continuously for 30 minutes and then cooling down said metal conductive medium so as to form a second insulative layer on said layer of semiconductor impedance thermal material.