Patent ID: 8629833

Claim:
A display comprising: a first substrate including: a cathode electrode layer, comprising a plurality of electrically conductive elements arranged in a matrix of rows and columns, a non-conductive separation layer disposed on said cathode electrode layer; an anode layer disposed on the non-conductive separation layer, at least one opening extending through the anode layer into the separation layer; and a plurality of separation walls extending from the anode layer, said plurality of separation walls forming cells on the anode layer corresponding to the electrically conductive elements arranged in said matrix; and a transparent second substrate, positioned opposite the anode layer and separated from the anode layer of the first substrate by a selected distance to form a cavity between the first and second substrate, wherein the plurality of separation walls extending from the first anode layer have a height less than the selected distance, and a thickness of the plurality of separation walls is proportional to the distance between the first substrate and the second substrate, wherein a gap is formed between a top of the plurality of separation walls and an inner a surface of the second substrate; a clear suspension fluid disposed within said cavity, said suspension fluid being distributed throughout said cavity by being in fluid communication with each of the cells; a plurality of electrically charged particles provided within each of said cells; and means for applying a voltage to said anode layer.