Patent ID: 6737224
Filing Date: 2004-05-18
Classification: C23C,G03F,Y10T

Abstract:
A method for preparing a thin supported film on a metal substrate having two opposing surfaces, the method comprising:a. masking off a first surface of the metal substrate with a maskant, leaving a second surface of the metal substrate unmasked; b. placing the metal substrate under a vacuum; c. treating the unmasked second surface of the metal substrate by plasma etching; d. coating the treated second surface of the metal substrate by plasma etching; d. coating the treated second surface of the metal substrate with a film while still under vacuum; e. removing the metal substrate from the vacuum; f. removing the maskant from the first surface after the treated second surface is coated with the film; g. forming a photoresist on the first surface from which the maskant is removed, the photoresist exposing a part of the first surface of the photoresist; h. etching through the part of the substrate of which the first surface is exposed by the photoresist; and i. removing the photoresist.