Title:
ELECTRON EMISSION ELECTRODE
Document Type and Number:
Japanese Patent JP3137961
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress evaporation in discharge and enhance resistance to ion sputtering by using electron emission material containing a first component of at least one element selected from Ba, St, and Ca, and a second component of at least one element selected from Ta, Zr, Nb, Ti, and Hf, and also containing oxynitride perovskite.
SOLUTION: A desirable element of a first component is Ba, and Ba is preferable to occupy 70-100 atomic percent of the first component. A desirable element of a second component is Ta, and Ta is preferable to occupy 70-100 atomic percent of the second component. When molar ratio of the first component is represented by X and that of the second component is represented by Y, based on the total amount of the first component and the second component, the relation of 0.8≤X/Y≤1.5 is preferable. When the first component is represented by MI, and the second component is represented by MII, oxynitride of the oxynitride perovskite preferably contains a MIMIIO2N type crystal. An electrode using this electron emission material has long life.
Inventors:
Munemitsu Hamada
Akira Takeishi
Makoto Takahashi
Dai Matsuoka
Masatada Yodogawa
Taku Harada
Akira Takeishi
Makoto Takahashi
Dai Matsuoka
Masatada Yodogawa
Taku Harada
Application Number:
JP34696599A
Publication Date:
February 26, 2001
Filing Date:
December 06, 1999
Export Citation:
Assignee:
TDK Co., Ltd.
International Classes:
H01J1/14; H01J1/142; H01J1/15; H01J1/20; H01J1/28; H01J1/30; H01J17/04; H01J29/04; H01J31/12; H01J37/06; H01J61/067; (IPC1-7): H01J1/14
Domestic Patent References:
| JP63252920A | ||||
| JP7153373A | ||||
| JP10302714A |
Attorney, Agent or Firm:
Youichi Ishii