Patent US6066922A successfully refreshed from Google Patents.
US6066922A
Expired / Lapsed
US
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Electron emission device and display device using the same
Assignee: Pioneer Corp
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Filing: 1998-08-07
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Granted: 2000-05-23
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Expires: 2018-08-07
Abstract
Abstract An electron emission device exhibits a high electron emission efficiency. The device includes 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. The insulator layer has at a film thickness of 50 nm or greater and a field-stabilizing layer. When an electric field is applied between the electron-supply layer and the thin-film metal electrode, the electron emission device emits electrons.
Inventors
- 👤 Shingo Iwasaki
- 👤 Kiyohide Ogasawara
- 👤 Takamasa Yoshikawa
- 👤 Takashi Chuman
- 👤 Nobuyasu Negishi
- 👤 Hiroshi Ito
- 👤 Atsushi Yoshizawa
- 👤 Takashi Yamada
- 👤 Shuuichi Yanagisawa
- 👤 Kazuto Sakemura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:29
CPC Classifications
B; B82; B82Y; B82Y10/00; H; H01; H01J; H01J1/00; H01J1/02; H01J1/30; H01J1/312
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
83 words
An electron emission device comprising: an electron-supply layer made of metal or semiconductor; an insulator layer formed on the electron-supply layer; a thin-film metal electrode formed on the insulator layer and facing a vacuum space, and at least one field-stabilizing layer layered on the insulator layer in a thickness direction thereof and having a conductivity higher than that of said insulator layer, whereby the electron emission device emits electrons when an electric field is applied between the electron-supply layer and the thin-film metal.
Claim 2
Dependent Claim
83 words
An electron emission device comprising: an electron-supply layer made of metal or semiconductor; an insulator layer formed on the electron-supply layer; a thin-film metal electrode formed on the insulator layer and facing a vacuum space, and at least one field-stabilizing layer layered on the insulator layer in a thickness direction thereof and having a conductivity higher than that of said insulator layer, whereby the electron emission device emits electrons when an electric field is applied between the electron-supply layer and the thin-film metal.
Claim 3
Dependent Claim
26 words
An electron emission device according to claim 1, wherein said field-stabilizing layer is disposed at an interface between the thin-film metal electrode and the insulator layer.
Claim 4
Dependent Claim
25 words
An electron emission device according to claim 1, wherein said field-stabilizing layer is disposed at an interface between the insulator layer and the electron-supply layer.
Claim 5
Dependent Claim
22 words
An electron emission device according to claim 1, wherein said field-stabilizing layer is disposed at a mediate region of said insulator layer.
Claim 6
Dependent Claim
26 words
An electron emission device according to claim 1, wherein a plurality of the field-stabilizing layers and the insulator layer are alternately layered in the thickness direction.
Claim 7
Dependent Claim
24 words
An electron emission device according to claim 5, wherein the plurality of said layered field-stabilizing layers have thicknesses gradually descended in the thickness direction.
Claim 8
Dependent Claim
24 words
An electron emission device according to claim 5, wherein the plurality of said layered field-stabilizing layers have thickness gradually ascended in the thickness direction.
Claim 9
Dependent Claim
112 words
An election emission display device comprises: 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; 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; a thin-film metal electrode formed on the insulator layer and facing the vacuum space, and at least one field-stabilizing layer layered on the insulator layer in a thickness direction thereof and having a conductivity higher than that of said insulator layer.
Claim 10
Dependent Claim
112 words
An election emission display device comprises: 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; 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; a thin-film metal electrode formed on the insulator layer and facing the vacuum space, and at least one field-stabilizing layer layered on the insulator layer in a thickness direction thereof and having a conductivity higher than that of said insulator layer.
Claim 11
Dependent Claim
27 words
An electron emission display device according to claim 8, wherein said field-stabilizing layer is disposed at an interface between the thin-film metal electrode and the insulator layer.
Claim 12
Dependent Claim
26 words
An electron emission display device according to claim 8, wherein said field-stabilizing layer is disposed at an interface between the insulator layer and the electron-supply layer.
Claim 13
Dependent Claim
23 words
An electron emission display device according to claim 8, wherein said field-stabilizing layer is disposed at an mediate region of said insulator layer.
Claim 14
Dependent Claim
28 words
An electron emission display device according to claim 8, wherein a plurality of the field-stabilizing layers and the insulator layer are alternately layered by in the thickness direction.
Claim 15
Dependent Claim
25 words
An electron emission display device according to claim 12, wherein the plurality of said layered field-stabilizing layers have thicknesses gradually descended in the thickness direction.
Claim 16
Dependent Claim
25 words
An election emission display device according to claim 12, wherein the plurality of said layered field-stabilizing layers have thicknesses gradually ascended in the thickness direction.
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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) | 2003-05-23 | 2003-11-22 | 2004-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-05-23 | 2007-11-22 | 2008-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-05-23 | 2011-11-22 | 2012-05-23 | $7700.00 | Window Closed / Lapsed |