Patent ID: 11938215
Assignee: E INK CORPORATION
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 0:
1. A method for operating a benefit agent delivery system comprising the steps of:
providing a benefit agent delivery system comprising (a) a conductive layer, (b) a plurality of microcells, each microcell including an opening and containing a carrier and a benefit agent, (c) a sealing layer spanning the opening of each microcell and comprising a polymeric material and a metallic material, (d) an electrode layer; and (e) a voltage source; wherein the conductive layer, the microcell layer, the sealing layer and the electrode layer are vertically stacked upon each other; wherein the microcell layer and the sealing layer are disposed between the conductive layer and the electrode layer; and wherein the voltage source is coupled to the conductive layer and the electrode layer;
applying a voltage potential difference between the conductive layer and the electrode layer to generate an electric field having a polarity causing oxidation of the metallic material, removal of the metallic material from the sealing layer, and migration of the metallic material onto a surface of the microcell adjacent to the conductive layer.