Electrophoretic display panel having enhanced operation

Abstract

A triode-type electrophoretic display includes a glass viewing window upon which has been deposited a plurality of parallel cathode members. A plurality of grid members are deposited upon a layer of insulation above the cathode members and perpendicular thereto. A fluid-tight envelope encapsulating the cathode and grid members is formed by a glass cap having an conductor layer deposited on an interior surface for forming an anode. The glass cap seals against the viewing window. An electrophoretic fluid having pigmented particles suspended therein is contained in the envelope. The cathode and grid members have no free terminal ends within the fluid, instead, such ends extend beyond the fluid containing space and are covered by the cap. The cathode, grid and anode are selectively electrically chargeable to induce movement of the particles within the fluid, localized concentrations of particles at the intersections of the cathode and grid being visible through the viewing window.

Dependencies are inferred from the claim text.