Patent ID: 7642039
Filing Date: 2010-01-05
Classification: G03F

Abstract:
1. A method of producing an address plate comprising the steps of: coating a layer of conductive material onto a substrate; coating a layer of metal over the conductive material; coating a layer of photoresist above this layer of metal; curing the layer of photoresist; exposing, through a first mask, the desired pattern of the conductors onto the layer of photoresist; developing the photoresist and etching the layer of metal and the layer of conductive material; exposing, through a second mask, a desired relief pattern onto the layer of the photoresist; developing the photoresist and etching only the layer of metal; coating the resulting etched layer with a layer of dielectric material; applying a further layer of photoresist, the thickness of this layer being equal to the desired height of a relief pattern; curing the further layer of photoresist; exposing, through a third mask, the desired structure of the relief pattern onto the further layer of photoresist; and developing the photoresist and allowing the layer to dry, resulting in spacers raised above the layer of dielectric material.