Title:
ELECTRODE VOLTAGE IMPRESSING METHOD AND DEVICE FOR COLD CATHODE MOUNTED ELECTRON TUBE
Document Type and Number:
Japanese Patent JPH1167111
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent the deterioration of a cold cathode due to the impact of positive ions. SOLUTION: A voltage of an accelerating electrode 13 is impressed so as to satisfy the relationship among a perveance Pμ of an electron source determined by the shape of an electron gun part 1, an electric potential Va of the accelerating electrode 13, and a current Ib of an electron beam (e), represented by the formula Ib . At any time during operation, including rising and falling, the accelerating electrode 13 is impressed to the electric potential which is highest among that of each electrode in the electron tube. A gate 24 voltage is impressed at the end step of a rise operation, and the gate 24 voltage is first shut down at a fall time.
Inventors:
TAIDA SHIYUNJI
IMURA HIRONORI
MAKISHIMA HIDEO
IMURA HIRONORI
MAKISHIMA HIDEO
Application Number:
JP21766697A
Publication Date:
March 09, 1999
Filing Date:
August 12, 1997
Export Citation:
Assignee:
NEC CORP
International Classes:
H01J23/065; H01J1/304; H01J3/02; H01J23/06; H01J23/34; H01J25/34; (IPC1-7): H01J23/34; H01J1/30; H01J23/065
Attorney, Agent or Firm:
Tadashi Wakabayashi (4 others)
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