Field emission display with patterned anode over phosphor

Details Field emission display with patterned anode over phosphor Field emission display with patterned anode over phosphor

1997-04-28

1998-09-29

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313309, 313336, 313466, 313496, H01J 130, H01J 922

Patent

active

058149341

ABSTRACT:
A high efficiency field emission display, and a method for manufacturing such a display, having reduced driver circuit requirements, and which may be operated over a range of anode voltages while efficiently using existing phosphors, is described. A field emission display having a baseplate and an opposing face plate, includes a glass plate acts as a base for the faceplate. There is a patterned layer, having openings, of black matrix material over the glass plate. A plurality of phosphorescent elements are formed in and adjacent to the openings in the black matrix layer. A metal film overlays a portion of the top surface of each of the phosphorescent elements. The metal film may be patterned in a mesh or in other shapes, and provides for the highly efficient operation of the display of the invention. The baseplate, formed on a substrate, is mounted opposite and parallel to the faceplate, and has a conductive layer over the substrate. A plurality of electron-emitting tips formed on the baseplate extend through openings in the conductive layer, and are opposite to the phosphorescent elements. Finally, there is a means for establishing a differential voltage between the conductive layer and the metal film.

REFERENCES:
patent: 5225820 (1993-07-01), Clerc
patent: 5477105 (1995-12-01), Curtin et al.
patent: 5595519 (1997-01-01), Huang

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