Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Reexamination Certificate
2007-03-05
2010-06-15
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
C313S496000, C313S497000, C445S024000, C445S025000
Reexamination Certificate
active
07737616
ABSTRACT:
An electron-emitting device comprises: (A) a first electrode; (B) an electron-emitting film which is provided on the first electrode; and (C) a second electrode which is provided above the electron-emitting film across a distance H from the electron-emitting film, and includes an opening which exposes at least a part of the electron-emitting film, wherein an area of the second electrode is at least four times larger than an area of the opening, and a ratio H/W of the distance H to a width W of the opening is not less than 0.07 but not more than 0.6.
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Bowman Mary Ellen
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Patel Nimeshkumar D.
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