Field emission display with self-aligned grid

摘要

A field emission display includes a substrate (400) having a trench (402) formed therein, an emitter (418) formed in the trench (402), a dielectric layer (412) disposed on the substrate (400), and a grid material layer (406) disposed on the dielectric layer (412). The dielectric layer (412) is exposed by a planarization method. Consequently, the emitter (418) is necessarily aligned with the opening in the grid material layer (406). An electric field applied to the grid material layer (406) activates emitter (418) to emit electrons (416) to strike a faceplate (414).