Flat panel display with magnetic field emitter
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United States of America Patent
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Jan 13, 1998
Grant Date -
N/A
app pub date -
Jun 18, 1996
filing date -
Jun 18, 1996
priority date (Note) -
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status (Latency Note)
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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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