Designates the field emission cathode which has the polyimide spacer as the base the plane surface panel display

摘要

A flat panel display (11) of the field emission cathode type is described having polyimide spacers or pillars (39) separating the emitting surface (13) and display face (12) of the same. To provide spacers of constant height, a uniform polyamic ester coating is first applied by a spin coating process and photolithography techniques are used to form the spacer pattern prior to baking.