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Title:
ELECTRON TUBE COMPRISING A SEMICONDUCTOR CATHODE
Document Type and Number:
WIPO Patent Application WO1999067804
Kind Code:
A8
Abstract:
An electron tube provided with a semiconductor cathode for emitting electrons, which semiconductor cathode is arranged on a support, a source being arranged in the vicinity of the cathode, in particular, so as to face the free (Si) surface of the cathode, which source is capable of evolving, at the increased temperatures occurring during evacuation of the tube in the manufacturing process, a reducing agent such as F2 or HF, which passivates the free (Si) surface of the cathode.

Inventors:
GEHRING FREDERIK C
KROON RON
VAN ZUTPHEN TOM
Application Number:
IB9901044W
Publication Date:
March 16, 2000
Filing Date:
June 07, 1999
Export Citation:
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Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
PHILIPS SVENSKA AB (SE)
International Classes:
H01J3/02; H01J1/308; H01J9/02; H01J9/385; H01J29/04; H01J29/48; (IPC1-7): H01J29/48; H01J1/308
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