Field emission display provided with repair capability of defect

Details Field emission display provided with repair capability of defect Field emission display provided with repair capability of defect

1996-05-20

1998-02-17

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313309, 313336, H01J 2970

Patent

active

057194661

ABSTRACT:
A flat panel display having a repair capability, a process for repairing such a display having defects involving short circuits between a field emission tip and an adjacent conductor, and a process for forming a flat panel display with repair capability, are described. The flat panel display has a dielectric base substrate, upon which are formed cathode columns of parallel, spaced conductors. Gate lines, also formed of parallel, spaced conductors, are located over and perpendicular to the cathode columns. A dielectric layer is formed between the cathode columns and the gate lines. Pixels of the display are located at the intersections of the cathode columns and the gate lines. A plurality of openings are formed in the gate lines and in the dielectric layer, at each of the pixels. A plurality of field emission microtips, at each of the pixels, connects to and extends up from the cathode columns and into the openings. Slots in the gate lines are formed contiguously between the openings and parallel to the direction of the gate lines, whereby the slots provide a repair capability. The flat panel display is tested to detect the defect, located at an emitter location. The gate line is cut, preferably with a laser beam, on both sides of the emitter.

REFERENCES:
patent: 5194780 (1993-03-01), Meyer
patent: 5260818 (1993-11-01), Wu
patent: 5319279 (1994-06-01), Watanabe et al.
patent: 5396150 (1995-03-01), Wu et al.
patent: 5404070 (1995-04-01), Tsai et al.
patent: 5442193 (1995-08-01), Jaskie et al.

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