ELECTRON EMISSION DEVICE, ELECTRIFYING DEVICE AND ELECTRIFYING METHOD

Title:

ELECTRON EMISSION DEVICE, ELECTRIFYING DEVICE AND ELECTRIFYING METHOD

Document Type and Number:

Japanese Patent JP2005005205

Kind Code:

A

Abstract:

To provide an electron emission device capable of stably driving for a long period, an electrifying device using the emission device and its charging method.

An electron emission device 10 has a semiconductor layer 4 formed between a first and a second electrodes 6, 2, and includes an electron emission element 11 of which at least a part of the surface of the layer 4 at the first electrode 6 side is made porous layer 5. The electrifying device 1 uses the emission device 10 having a power supply 20 alternately impressing a positive voltage enabling to emit electron, and a negative voltage having an reverse polarity of the positive voltage. The electrifying method alternately impresses positive and negative voltages on the first electrode 6 of the emission device 10.

Inventors:

HIRAKAWA HIROYUKI
IWAMATSU TADASHI
KOSHIDA NOBUYOSHI

Application Number:

JP2003169466A

Publication Date:

January 06, 2005

Filing Date:

June 13, 2003

Export Citation:

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Assignee:

SHARP KK
KOSHIDA NOBUYOSHI

International Classes:

G03G15/02; G03G13/02; H01J1/312; H01J29/04; H01T23/00; (IPC1-7): H01J29/04; G03G15/02; H01J1/312; H01T23/00

Domestic Patent References:

JP2002258585A	2002-09-11
JP2002311683A	2002-10-23

Foreign References:

US20030090211A1

2003-05-15

Attorney, Agent or Firm:

Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai

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