Method of manufacturing touch device with curved touch surface on substrate

A method of manufacturing a curved touch screen comprising:

• providing an arcuate transparent substrate strip, the substrate having an outer convex touch surface and an inner concave connecting surface opposite the outer convex touch surface;
• coating the concave connecting surface of the transparent substrate strip with a layer of conductive material;
• coating the conductive material layer with a layer of photo-resist material;
• coating, with opaque material, a pattern of a circuit on an arcuate mask made of transparent material, the arcuate mask having a concave light incident surface and an opposite convex light emergent surface, the coating being made on the convex surface of the mask;
• placing the mask against the photo-resist layer with the pattern of the coating completely disposed against the photo-resist layer;
• photo-etching the conductive layer into the pattern of the coating of the opaque material on the mask to form a conductive circuit on the connecting surface of the substrate;
• and
• connecting a drive circuit to the conductive circuit forming a touch device.

A method of manufacturing a curved touch screen comprising:

• providing an arcuate transparent substrate strip having a first strip end and a second strip end, the substrate curved with the first strip end positioned toward the second strip end and having an outer convex touch surface extending between the first strip end and the second strip end and an inner concave connecting surface opposite the outer convex touch surface extending between the first strip end and the second strip end;
• coating the concave connecting surface of the transparent substrate strip with a layer of conductive material;
• coating the conductive material layer with a layer of photo-resist material;
• coating, with opaque material, a pattern of a circuit on an arcuate mask made of transparent material, the arcuate mask having a concave light incident surface and an opposite convex light emergent surface, the coating being made on the convex surface of the mask;
• placing the mask against the photo-resist layer with the pattern of the coating completely disposed against the photo-resist layer;
• photo-etching the conductive layer into the pattern of the coating of the opaque material on the mask to form a conductive circuit on the connecting surface of the substrate;
• and
• connecting a drive circuit to the conductive circuit forming a touch device.