Flat panel display with magnetic field emitter

Details Flat panel display with magnetic field emitter Flat panel display with magnetic field emitter

1996-06-18

1998-01-13

Patel, Nimeshkumar

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313497, 313309, H01J 1924

Patent

active

057083274

ABSTRACT:
A flat panel display device (50) includes magnetic field emitter elements (52). The emitter elements (52) include a dopant ferromagnetic material (56) used to produce a permanent magnet in the emitter elements (52). The permanent magnet in the emitter elements (52) generates a magnetic field (B) used to focus the electrons emitted from the tips of the emitter elements (52). The flat panel display device (50) further includes a voltage source (70) for producing an electric field (E) between a cathode electrode (54) having a gate electrode (58), and an anode electrode (60) having phosphor regions (62) disposed between black matrix regions (61). The magnetic field (B) provides a restoring magnetic force to collimate the electrons toward the phosphor regions (62) to produce a high brightness display.

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Lieberman, D., "FEDS Are Coming To Town," OEM Mag., (Apr. 1995), pp. 45-51.
Edmondson, G. et al., "The Grand Alliance in Flat Panels," Science & Technology, Business Week Mag., Aug. 28, 1995, pp. 73-74.

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