EP0865064A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electron emission device and display device using the same
Assignee: Pioneer Corp
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Filing: 1998-03-04
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Granted: —
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Expires: 2018-03-04
Abstract
Abstract An electron emission device exhibits a high electron emission efficiency. The device includes an electron supply layer (12) of metal or semiconductor, an insulator layer (13) formed on the electron supply layer (12), and a thin-film metal electrode (15) formed on the insulator layer (13). The insulator layer (13) is made of an amorphous dielectric substance and has a film thickness of 50 nm or greater and has an amorphous phase with an average grain size of 5 to 100 nm as a major component and a polycrystal phase as a minor component. When an electric field is applied between the electron supply layer (12) and the thin-film metal electrode (15), the electron emission device emits electrons.
Inventors
- 👤 Takashi Pioneer Electronic Corp. Chuman
- 👤 Shingo Pioneer Electronic Corp. Iwasaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 02:23
CPC Classifications
B; B82; B82Y; B82Y10/00; H; H01; H01J; H01J1/00; H01J1/02; H01J1/30; H01J1/312; H01J2329/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
An electron emission device comprising: an electron supply layer of metal or semiconductor; an insulator layer formed on the electron supply layer;
and a thin-film metal electrode formed on the insulator layer
and facing a vacuum space, characterized in that said insulator layer is made of an
amorphous dielectric substance and has a film thickness of 50
nm or greater and has an amorphous phase with an average grain
size of 5 to 100 nm as a major component and a polycrystal phase
as a minor component, whereby the electron emission device emits
electrons when an electric field is applied between the electron
supply layer and the thin-film metal electrode.
Claim 2
Dependent Claim
137 words
An electron emission display device comprising: a pair of first and second substrates facing each other
with a vacuum space in between; a plurality of electron emission devices provided on the
first substrate; a collector electrode provided in the second substrate;
and a fluorescent layer formed on the collector electrode, each of the electron emission devices comprising an
electron supply layer of metal or semiconductor; an insulator
layer formed on the electron supply layer; and a thin-film metal
electrode formed on the insulator layer and facing a vacuum space,
wherein said insulator layer is made of an amorphous dielectric
substance and has a film thickness of 50 nm or greater and has
an amorphous phase with an average grain size of 5 to 100 nm as
a major component and a polycrystal phase as a minor component.
Claim 3
Dependent Claim
192 words
An electron emission display device comprising: a pair of a device substrate and a transparent substrate
facing each other with a vacuum space in between; a plurality of ohmic electrodes formed in parallel on an
inner surface of the device substrate; a plurality of electron emission devices provided on the
ohmic electrodes, each of the electron emission devices
comprising an electron supply layer of metal or semiconductor;
an insulator layer formed on the electron supply layer; and a
thin-film metal electrode formed on the insulator layer and
facing the vacuum space, wherein said insulator layer is made
of an amorphous dielectric substance and has a film thickness
of 50 nm or greater and has an amorphous phase with an average
grain size of 5 to 100 nm as a major component and a polycrystal
phase as a minor component; a plurality of bus electrodes formed on parts of the
thin-film metal electrodes and extending in parallel to one
another and perpendicular to the ohmic electrodes so as to
electrically connect adjoining thin-film metal electrodes; a plurality of collector electrodes provided in the
transparent substrate; and fluorescent layers formed on the collector electrodes.
Claim 4
Dependent Claim
35 words
An electron emission display device according to claim
3 further comprising a second auxiliary insulator layer with
openings formed to separate the surfaces of the thin-film metal
electrodes into a plurality of electron emission regions.
Claim 5
Dependent Claim
19 words
An electron emission display device according to claim
4, wherein the second auxiliary insulator layer covers the bus
electrodes.
References Cited (Backward Citations)
No citation records indexed.
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