Method of registering a spacer with a conducting track

1. A method of producing a relief structure on a patterned conductor comprising the steps of:

coating a layer of conductive material onto a transparent substrate;

coating a layer of metal onto the layer of conductive material;

coating a layer of photoresist onto the layer of metal;

curing the layer of photoresist;

exposing, through a first mask, a desired pattern of transparent conductors onto the layer of photoresist;

developing the photoresist and simultaneously etching the layer of the conductive material and the layer of metal;

exposing, through a second mask, a desired pattern of metal conductors onto the remaining layer of photoresist;

developing the photoresist and etching the layer of metal,

applying a further layer of photoresist;

curing the further layer of photoresist;

exposing the further layer of photoresist thorough the substrate; and

developing the photoresist and allowing the layer to dry, resulting in a pattern of spacers/reliefs in registration with the metal conductors.

2. A method as claimed in claim 1 , wherein the etched layer is coated with a layer of dielectric material prior to the application of the further layer of photoresist.

3. A method as claimed in claim 1 , wherein the metal is silver.

4. A method as claimed in claim 1 , wherein the substrate is flexible.

5. A method as claimed in claim 1 , wherein the conducting layer is comprised of an inorganic material.

6. A device manufactured by the method claimed in claim 1 .