Patent ID: 8242875
Filing Date: 2012-08-14
Classification: C23C,H01C,Y10T

Abstract:
1. A method of manufacturing a thin film type varistor, the method comprising: depositing a first zinc oxide thin film at a low temperature through a sputtering method; and forming a zinc oxide thin film for a varistor by treating the first zinc oxide thin film with heat at a low temperature in an environment in which inert gas and oxygen are injected together, the method further comprising: before the depositing a first zinc oxide and the forming a zinc oxide thin film for a varistor, forming a zinc oxide thin film for a lower metal electrode by depositing a second zinc oxide thin film at a low temperature through the sputtering method so as to be located between a substrate and the zinc oxide thin film for the varistor and treating the second zinc oxide thin film with heat at a low temperature in an environment in which only the inert gas is injected; and after the depositing a first zinc oxide and the forming a zinc oxide thin film for a varistor, forming a zinc oxide thin film for an upper metal electrode by depositing a third zinc oxide thin film at a low temperature through the sputtering method so as to be located on the zinc oxide thin film for the varistor and treating the third zinc oxide thin film with heat at a low temperature in an environment in which only the inert gas is injected.