Patent ID: 6171703
Filing Date: 2001-01-09
Classification: C09D,H01L

Abstract:
A coated electronic device formed by a method consisting essentially of:(A) coating the electronic device with a solution consisting essentially of a solvent and hydrogen silsesquioxane resin;(B) evaporating the solvent to deposit a preceramic coating on the electronic device;(C) heating the preceramic coating to a temperature of between about 500 up to about 800.degree. C. under an inert gas atmosphere; and(D) applying a passivating coating over the coating of step (C), the passivating coating applied by means of (i) coating the electronic device having the coating of step (C) with a second solution comprising a solvent and a preceramic polymer, (ii) evaporating said solvent to thereby deposit a preceramic coating; and (iii) heating the preceramic coating to a temperature between 200-900.degree. C. under an ammonia or inert gas atmosphere, whereby a dual layer coating is obtained on the electronic device.