US5066883A
Expired / Lapsed
US
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Electron-emitting device with electron-emitting region insulated from electrodes
Assignee: Canon Inc
•
Filing: 1988-07-13
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Granted: 1991-11-19
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Expires: 2008-07-13
Abstract
Abstract An electron-emitting device is provided which includes a laminate having an insulating layer held between a pair of electrodes opposing each other, wherein an electron-emitting region insulated from the electrodes is formed at a side end surface of the insulating layer formed at the part at which the electrodes oppose each other, and electrons are emitted from the electron-emitting region by applying a voltage between the electrodes. A method for preparing the electron-emitting device is also provided.
Inventors
- 👤 Seishiro Yoshioka
- 👤 Ichiro Nomura
- 👤 Hidetoshi Suzuki
- 👤 Toshihiko Takeda
- 👤 Tetsuya Kaneko
- 👤 Yoshikazu Banno
- 👤 Kojiro Yokono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:51
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/30; H01J1/316; H01J9/00; H01J9/02; H01J9/022; H01J9/027; H01J2329/00
Claims Analysis
Total Claims: 57
Claim 1
Independent Claim
92 words
An electron-emitting device comprising a laminate having an insulating layer disposed between opposing electrodes on a planar substrate, said insulating layer having an electron-emitting region spaced apart from said electrodes, wherein a first portion of said insulating layer is disposed between said opposing electrodes, wherein a second portion of said insulating layer is disposed between one of said electrodes and said planar substrate, said emitting region being disposed in said first portion of said insulating layer and wherein electrons are emitted from said electron-emitting region by applying a voltage to said electrodes.
Claim 2
Dependent Claim
92 words
An electron-emitting device comprising a laminate having an insulating layer disposed between opposing electrodes on a planar substrate, said insulating layer having an electron-emitting region spaced apart from said electrodes, wherein a first portion of said insulating layer is disposed between said opposing electrodes, wherein a second portion of said insulating layer is disposed between one of said electrodes and said planar substrate, said emitting region being disposed in said first portion of said insulating layer and wherein electrons are emitted from said electron-emitting region by applying a voltage to said electrodes.
Claim 3
Dependent Claim
29 words
The electron-emitting device of claim 1, wherein said electrodes, opposing each other at each end portion of the electrodes, hold said insulating layer without any overlap of said electrodes.
Claim 4
Dependent Claim
22 words
The electron-emitting device of claim 1, wherein said electron-emitting region comprises a layer of an electron-emitting material interposed in said insulating layer.
Claim 5
Dependent Claim
26 words
The electron-emitting device of claim 3, wherein said electron-emitting material is selected from the group consisting of borides, carbides, nitrides, metals, metal oxides, semiconductors, and carbon
Claim 6
Dependent Claim
18 words
The electron-emitting device of claim 4, wherein said electron-emitting material comprises at least two kinds of different materials.
Claim 7
Dependent Claim
40 words
The electron-emitting device of claim 4, wherein said electron-emitting material is selected from the group consisting of Nb, Mo, Rh, Hf, Ta, W, Re, Ir, Pt, Ti, Au, Ag, Cu, Cr, Al, Co, Ni, Fe, Pb, Pd, Cs and Ba.
Claim 8
Dependent Claim
36 words
The electron-emitting device of claim 4, wherein said electron-emitting material comprises a metal oxide selected from the group consisting of In 2 O 3 , SnO 2 , BaO, MgO and Sb 2 O 3 .
Claim 9
Dependent Claim
19 words
The electron-emitting device of claim 4, wherein said electron-emitting material comprises fine particles of pd or SnO 2 .
Claim 10
Dependent Claim
27 words
The electron-emitting device of claim 1, wherein said electron-emitting region comprises a layer formed by incorporating an electron-emitting material in the insulating layer in a dispersed state.
Claim 11
Dependent Claim
26 words
The electron-emitting device of claim 9, wherein said electron-emitting material is selected from the group consisting of borides, carbides, nitrides, metals, metal oxides, semiconductors, and carbon.
Claim 12
Dependent Claim
18 words
The electron-emitting device of claim 10, wherein said electron-emitting material comprises at least two kinds of different materials.
Claim 13
Dependent Claim
40 words
The electron-emitting device of claim 10, wherein said electron-emitting material is selected from the group consisting of Nb, Mo, Rh, Hf, Ta, W, Re, Ir, Pt, Ti, Au, Ag. Cu, Cr, Al, Co, Ni, Fe, Pb, Pd. Cs and Ba.
Claim 14
Dependent Claim
36 words
The electron-emitting device of claim 10, wherein said electron-emitting material comprises a metal oxide selected from the group consisting of In 2 O 3 , SnO 2 , BaO, MgO and Sb 2 O 3 .
Claim 15
Dependent Claim
19 words
The electron-emitting device of claim 10, wherein said electron-emitting material comprises fine particles of Pd or SnO 2 .
Claim 16
Dependent Claim
14 words
The electron-emitting device of claim 1, wherein said electron-emitting region comprises an electron-emitting material.
Claim 17
Dependent Claim
26 words
The electron-emitting device of claim 15, wherein said electron-emitting material is selected from the group consisting of borides, carbides, nitrides, metals, metal oxides, semiconductors, and carbon.
Claim 18
Dependent Claim
18 words
The electron-emitting device of claim 16, wherein said electron-emitting material comprises at least two kinds of different materials.
Claim 19
Dependent Claim
40 words
The electron-emitting device of claim 16, wherein said electron-emitting material is selected from the group consisting of Nb, Mo, Rh, Hf, Ta, W, Re, Ir, Pt, Ti, Au, Ag, Cu, Cr, Al, Co, Ni, Fe, pb, Pd, Cs and Ba.
Claim 20
Dependent Claim
36 words
The electron-emitting device of claim 16, wherein said electron-emitting material comprises a metal oxide selected from the group consisting of In 2 O 3 , SnO 2 , BaO, MgO and Sb 2 O 3 .
Claim 21
Dependent Claim
19 words
The electron-emitting device of claim 16, wherein said electron-emitting material comprises fine particles of Pd or SnO 2 .
Claim 22
Dependent Claim
23 words
The electron-emitting device of claim 1, wherein the one or both of a pair of said electrodes are in a multiple layer constitution.
Claim 23
Dependent Claim
26 words
The electron-emitting device of claim 21, wherein at least one layer of the multiple layers is made of a material not readily damaged by ion sputtering.
Claim 24
Dependent Claim
27 words
The electron-emitting device of claim 22, wherein said material comprises a high-melting material selected from the group consisting of W, LaB 6 , carbon, TiC and TaC.
Claim 25
Dependent Claim
23 words
The electron-emitting device of claim 21, wherein at least one layer of said multiple layers comprises a material exhibiting a low work function.
Claim 26
Dependent Claim
31 words
The electron-emitting device of claim 24, wherein said material is selected from the group consisting of SnO 2 , In 2 O 3 , BaO, LaB 6 , Cs, and CsO.
Claim 27
Dependent Claim
23 words
The electron-emitting device of claim 21, wherein at least one layer of said multiple layers comprises a material having a high electrical conductivity.
Claim 28
Dependent Claim
31 words
The electron-emitting device of claim 26, wherein said material is selected from the group consisting of Ag, Al, Cu, Cr, Ni, Mo, Ta, W, and an alloy of any of these.
Claim 29
Dependent Claim
14 words
The electron-emitting device of claim 1, wherein said electrodes are overlapped with each other.
Claim 30
Dependent Claim
15 words
The electron-emitting device of claim 5, wherein said different materials comprise materials having different conductivities.
Claim 31
Dependent Claim
15 words
The electron-emitting device of claim 11, wherein said different materials comprise materials having different conductivities.
Claim 32
Dependent Claim
15 words
The electron-emitting device of claim 17, wherein said different materials comprise materials having different conductivities.
Claim 33
Dependent Claim
82 words
An electron-emitting device comprising a laminate having an insulating layer and a layer of an electron-emitting material disposed between opposing electrodes on a planar substrate, wherein said electron-emitting material is spaced apart from said electrode, wherein a first portion of said electron emitting material is disposed between said opposing electrodes wherein a second portion of said electron emitting material is disposed between one of said electrodes and said planar substrate, and wherein electrons are emitted by applying a voltage to said electrodes.
Claim 34
Dependent Claim
82 words
An electron-emitting device comprising a laminate having an insulating layer and a layer of an electron-emitting material disposed between opposing electrodes on a planar substrate, wherein said electron-emitting material is spaced apart from said electrode, wherein a first portion of said electron emitting material is disposed between said opposing electrodes wherein a second portion of said electron emitting material is disposed between one of said electrodes and said planar substrate, and wherein electrons are emitted by applying a voltage to said electrodes.
Claim 35
Dependent Claim
74 words
An electron-emitting device comprising a laminate comprising an insulating layer having an electron-emitting material in a dispersed state and disposed between opposing electrodes on a planar substrate, wherein a first portion of said electron emitting material is disposed between said opposing electrodes wherein a second portion of said electron emitting material is disposed between one of said electrodes and said planar substrate, and wherein electrons are emitted by applying a voltage between said electrodes.
Claim 36
Dependent Claim
74 words
An electron-emitting device comprising a laminate comprising an insulating layer having an electron-emitting material in a dispersed state and disposed between opposing electrodes on a planar substrate, wherein a first portion of said electron emitting material is disposed between said opposing electrodes wherein a second portion of said electron emitting material is disposed between one of said electrodes and said planar substrate, and wherein electrons are emitted by applying a voltage between said electrodes.
Claim 37
Dependent Claim
84 words
An electron-emitting device comprising opposing electrodes, an insulating layer having a layer of an electron-emitting material disposed between said opposing electrodes, and being disposed on a planar substrate, wherein said an electron-emitting material is spaced apart from said electrodes, wherein a first portion of said electron emitting-material is disposed between said opposing electrodes, wherein a second portion of said electron-emitting material is disposed between one of said electrodes and said planar substrate, and wherein electrons are emitted by applying a voltage to said electrodes.
Claim 38
Dependent Claim
84 words
An electron-emitting device comprising opposing electrodes, an insulating layer having a layer of an electron-emitting material disposed between said opposing electrodes, and being disposed on a planar substrate, wherein said an electron-emitting material is spaced apart from said electrodes, wherein a first portion of said electron emitting-material is disposed between said opposing electrodes, wherein a second portion of said electron-emitting material is disposed between one of said electrodes and said planar substrate, and wherein electrons are emitted by applying a voltage to said electrodes.
Claim 39
Dependent Claim
18 words
The electron-emitting device of claim 34, wherein the insulating layer contains an electron-emitting material in a dispersed state.
Claim 40
Dependent Claim
82 words
An electron-emitting device comprising opposing electrodes, an insulating layer containing an electron-emitting material being disposed between said electrodes in a dispersed state on a planar substrate; wherein said an electron-emitting material is spaced apart from said electrodes, wherein a first portion of said electron-emitting material is disposed between said opposing electrodes, wherein a second portion of said electron-emitting material is disposed between one of said electrodes and said planar substrate, and wherein electrons are emitted by applying a voltage to said electrodes.
Claim 41
Dependent Claim
82 words
An electron-emitting device comprising opposing electrodes, an insulating layer containing an electron-emitting material being disposed between said electrodes in a dispersed state on a planar substrate; wherein said an electron-emitting material is spaced apart from said electrodes, wherein a first portion of said electron-emitting material is disposed between said opposing electrodes, wherein a second portion of said electron-emitting material is disposed between one of said electrodes and said planar substrate, and wherein electrons are emitted by applying a voltage to said electrodes.
Claim 42
Dependent Claim
40 words
An electron-emitting device comprising an insulating layer is disposed between opposing electrodes on a planar substrate, and having fine particles arranged within said insulating layer in a dispersed state; wherein electrons are emitted by applying a voltage to said electrodes.
Claim 43
Dependent Claim
40 words
An electron-emitting device comprising an insulating layer is disposed between opposing electrodes on a planar substrate, and having fine particles arranged within said insulating layer in a dispersed state; wherein electrons are emitted by applying a voltage to said electrodes.
Claim 44
Dependent Claim
21 words
The electron-emitting device of claim 37, having the structure in which said fine particles are completely included into said insulating layer.
Claim 45
Dependent Claim
23 words
The electron-emitting device of claim 37, having the structure that any of said fine particles completely included into said insulating layer insulating layer.
Claim 46
Dependent Claim
30 words
The electron-emitting device of claim 37, wherein said fine particles is composed of a substance selected from the group consisting of borides, carbides, nitrides, metals, metal oxides, semiconductors, and carbon.
Claim 47
Dependent Claim
17 words
The electron-emitting device of claim 37, wherein said fine particles are dispersed between the electrodes by coating.
Claim 48
Dependent Claim
18 words
The electron-emitted device of claim 37, wherein said fine particles are dispersed between the electrodes by vacuum deposition.
Claim 49
Dependent Claim
20 words
The electron-emitting device of claim 37, wherein said fine particles are dispersed by thermal decomposition of an organic metal compound.
Claim 50
Dependent Claim
23 words
The electron-emitting device of claim 37, comprising a substrate comprising a porous glass in which a metal or a metal oxide is deposited.
Claim 51
Dependent Claim
15 words
The electron-emitting device of claim 37, comprising a colored glass containing metal colloid fine particles.
Claim 52
Dependent Claim
34 words
An electron-emitting device comprising opposing electrodes formed on an insulating layer disposed on a planar substrate and disposed between said opposing electrodes, and fine particles being dispersed within said insulating layer between said electrodes.
Claim 53
Dependent Claim
34 words
An electron-emitting device comprising opposing electrodes formed on an insulating layer disposed on a planar substrate and disposed between said opposing electrodes, and fine particles being dispersed within said insulating layer between said electrodes.
Claim 54
Dependent Claim
14 words
The electron-emitting device of claim 46, wherein said insulating layer comprises a low-melting glass.
Claim 55
Dependent Claim
23 words
The electron-emitting device of claim 46, wherein said insulating layer has a film thickness of from several ten angstroms to several ten microns.
Claim 56
Dependent Claim
44 words
An electron-emitting device comprising opposing electrodes having a predetermined spacing disposed on a planar substrate, with at least two kinds of fine particles of materials having different conductivities disposed between said predetermined spacing, wherein electrons are emitted by applying a voltage to said electrodes.
Claim 57
Dependent Claim
44 words
An electron-emitting device comprising opposing electrodes having a predetermined spacing disposed on a planar substrate, with at least two kinds of fine particles of materials having different conductivities disposed between said predetermined spacing, wherein electrons are emitted by applying a voltage to said electrodes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-18 | 2003-05-20 | 2003-11-19 | $7700.00 | Window Closed / Lapsed |