Patent ID: 6541392
Filing Date: 2003-04-01
Classification: C23C,H01L

Abstract:
A method for fabricating a three dimensional anisotropic thin film making use of a PVD process, comprising the steps of:(a) preparing a substrate within a vacuum chamber; (b) placing at least two target material within said vacuum chamber; (c) admitting a quantity of an inert plasma forming gas into said vacuum chamber; and (d) vapor depositing said at least two target materials onto a surface of said substrate, a quantity of a first one of said at least two target materials being deposited in a discontinuous island dot formation onto said surface of said substrate, then a quantity of a second one of said at least two target materials being deposited in a discontinuous island dot formation onto said surface of said substrate, and so on, and sequentially repeating said vapor depositions of a quantity of each one of said at least two target materiais onto said surface of said substrate until an operator determined amount of each one of said at least two target materials is deposited onto said surface of said substrate, said first one of said at least two target materials preferentially adhering to previously deposited dots of said first target material, said second one of said at least two target materials preferentially adhering to previously deposited dots of said second target material, and so on, said target material depositions forming substantially normal plural columns of each one of said target materials in relation to a beginning area of each one of said columns on said surface of said substrate.