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Title:
NOVEL FIELD EMISSION ELEMENT FOR FLAT PANEL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP3961045
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a highly reliable field emission element which is easily manufacture, high in efficiency, able to form a uniform electron beam, and capable of reducing the possibility of spark discharges and a dielectric breakdowns.
SOLUTION: An emitter layer 106 is a resistive material, equipped with a side end part 120 having an edge part 122, and a spacer layer 104 is present only on a part of the emitter layer. A gate layer 102 on the spacer layer has a taper-shaped side end part and forms a wedge 129 at its edge part. An element is used in a flat panel display device having a screen 124, and the screen 124 is at a positive voltage and disposed above the gate layer 102. When a potential difference is applied between the emitter layer 106 and the gate layer 102, electrons are emitted from the edge part of the emitter layer and attracted to the screen. The wedge makes the quantity of electrons flocking to the gate to be reduced and enhances efficiency of the element. Because the emitter layer is resistive, uniformity of electrons emitted along the edge part of the emitter layer is improved.


Inventors:
Fueru-Pay Kuo
Application Number:
JP12225496A
Publication Date:
August 15, 2007
Filing Date:
April 19, 1996
Export Citation:
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Assignee:
HEWLETT-PACKARD COMPANY
International Classes:
H01J1/30; H01J3/02; H01J31/12; H01J29/04; (IPC1-7): H01J1/30; H01J31/12
Domestic Patent References:
JP5225914A
JP5242796A
JP8222122A
JP6097458A
JP5152640A
JP4280048A
JP4328222A
JP7211245A
JP8087954A
Foreign References:
US3789471
US3753022
US5266155
Attorney, Agent or Firm:
Kaoru Furuya
Takahiko Mizobe
Satoshi Furuya