Electrostatic focussing means for field emission displays

Details Electrostatic focussing means for field emission displays Electrostatic focussing means for field emission displays

1995-08-24

1996-08-06

Horabik, Michael

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313308, 313336, H01J 1974, H01J 2918

Patent

active

055436862

ABSTRACT:
A microtip structure with high uniformity, low operating voltage and no resistive dissipation for a field emission display is described. A substrate is provided. A first conductive layer is formed on the substrate that acts as a cathode. A second conductive layer with a narrow circular opening acts as a gate. A first dielectric layer separates the cathode and the gate. The microtip extends up from the cathode and into the opening. A second dielectric layer is over the gate, with a circular opening that is larger than and concentric with the narrow circular opening in the gate. A means to provide a brief, charging voltage to the gate, followed by a longer operational voltage, wherein the amplitude of the operational voltage is lower than the amplitude of the charging voltage, is included.

REFERENCES:
patent: 3755704 (1973-08-01), Spindt et al.
patent: 4721885 (1988-01-01), Brodie
patent: 4857161 (1989-08-01), Borel et al.
patent: 4874981 (1989-10-01), Spindt
patent: 4940916 (1990-07-01), Borel et al.
patent: 5007873 (1991-04-01), Goronhin et al.
patent: 5151061 (1992-09-01), Sandhu
patent: 5157304 (1992-10-01), Kane et al.
patent: 5186670 (1993-02-01), Doan et al.
patent: 5188977 (1993-02-01), Stengl et al.
patent: 5189341 (1993-02-01), Itoh et al.
patent: 5235244 (1993-08-01), Spindt

Affiliated with

Also associated with

Rating

Electrostatic focussing means for field emission displays does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrostatic focussing means for field emission displays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrostatic focussing means for field emission displays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2193276