Flat panel display with focus mesh

Details Flat panel display with focus mesh Flat panel display with focus mesh

1994-12-27

1996-04-16

Ramsey, Kenneth J.

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313307, 313309, 445 24, H01J 9227

Patent

active

055085849

ABSTRACT:
A field emission display with focus mesh, and the method of making such a display, is described. There is a glass substrate acting as a face for a faceplate of the display. A conductive layer is formed over the glass substrate. A focus mesh dielectric that is formed over the conductive layer comprises a pattern of intersecting lines formed perpendicularly to one another. A focus mesh conductor overlays the focus mesh dielectric. Phosphor elements are formed within and separated from the pattern of intersecting lines, and over the conductive layer. During operation of the display, a first voltage is applied to the conductive layer, and a second voltage is applied to the focus mesh conductor. The first and second voltages create an electric field that focuses electrons emitted from field emission microtips, located at the baseplate, on to the phosphor elements.

REFERENCES:
patent: 4857799 (1989-08-01), Spindt et al.
patent: 4970430 (1990-11-01), Kamogawa et al.
patent: 5186670 (1993-02-01), Doan et al.
patent: 5191217 (1993-03-01), Kane et al.
patent: 5225820 (1993-07-01), Clerc
patent: 5453659 (1995-09-01), Wallace et al.

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