LIGHT EMITTING DEVICE - FUJI HEAVY IND LTD

Title:

LIGHT EMITTING DEVICE

Document Type and Number:

WIPO Patent Application WO/2006/109621

Kind Code:

A1

Abstract:

A light emitting device which excites a fluorescent material by electrons field-emitted from an electron emitting source and emits light. The light emitting device (1) is provided with a glass substrate (3) having a transparent electrode (15) and a fluorescent material layer (16); a grid electrode (10) having a plurality of openings; and a glass substrate (2) having a cathode electrode (5), an electron emitting source (6) and a cathode mask (20). The electrons field-emitted from the electron emitting source by a voltage applied between the grid electrode and the cathode electrode are accelerated toward the transparent electrode and are permitted to collide with the fluorescent material layer. The fluorescent material layer excited by the collided electrons emits light. The cathode mask is provided with an opening having a size substantially the same as that of the opening of the grid electrode, at a position substantially the same as that of the opening of the grid electrode. As a result, the number of electrons which jump into the grid electrode and do not contribute to light emission, among the electrons emitted from the electron emitting source, is reduced. Furthermore, generation of metal sputtering can be prevented.

Inventors:

TAKAHASHI HISAYA (JP)
NAMBA ATSUSHI
KOBAYASHI MIYUKI

Application Number:

PCT/JP2006/307110

Publication Date:

October 19, 2006

Filing Date:

April 04, 2006

Export Citation:

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Assignee:

FUJI HEAVY IND LTD (JP)
TAKAHASHI HISAYA (JP)
NAMBA ATSUSHI
KOBAYASHI MIYUKI

International Classes:

H01J63/06

Foreign References:

JP2004079264A	2004-03-11
JP2003017004A	2003-01-17
JP2004220896A	2004-08-05
JP2004207066A	2004-07-22

Other References: