Field-emission cathode having integrated electrical interconnects and electron tube using the same
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United States of America Patent
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Dec 17, 1996
Issued Date -
N/A
app pub date -
Feb 23, 1996
filing date -
Dec 28, 1993
priority date (Note) -
Expired
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Abstract
A field emission cathode includes a conductive substrate (1) having emitters (4) formed thereon, a contact hole (5) extending therethrough, and a conductive layer (7) formed within the contact hole (5) thereby extending through the conductive substrate (1). A gate electrode (3) and the conductive layer (7) are insulated from the conductive substrate (1) by an insulating layer (2). The gate electrode (3) is connected to a first pull-out electrode (6) via the conductive layer (7), and the emitters (4) are connected to a second pull-out electrode (8) via the conductive substrate (1) thereby eliminating the need for bonding wires.
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