US4955681A
Expired / Lapsed
US
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Image display apparatus having sheet like vertical and horizontal deflection electrodes
Assignee: Panasonic Holdings Corp
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Filing: 1988-11-16
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Granted: 1990-09-11
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Expires: 2008-11-16
Abstract
Abstract In an image display apparatus, horizontal-extended line cathodes (22a-22d), an electron beam extraction electrode (23), a control electrode (24), a first focusing electrode (25) having horizontal-elongated apertures (35, 45), a second focusing electrode (26) having vertical-elongated apertures (36, 46), a horizontal deflection electrode (27a, 27b), a vertical deflection electrode (28a, 28b) and a screen (29) are provided in this order toward a travelling direction of electron beam, and each of both deflection electrodes comprises a pair of comb-shaped conductive sheets which are insulatedly interdigitated with each other on the same vertical plane.
Inventors
- 👤 Toshinobu Sekihara
- 👤 Mitsunori Yokomakura
- 👤 Yuichi Moriyama
- 👤 Michiaki Watanabe
- 👤 Tomohiro Sekiguchi
- 👤 Keiji Nagata
- 👤 Takatsugu Kurata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:47
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/125; H01J31/126
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
183 words
An image display apparatus comprising: a plurality of line cathodes which are extended in parallel with each other to emit electrons; an electron beam extraction electrode for extracting electron beams from said line cathodes; a control electrode for selectively controlling a passing amount of electron beams having passed through said electron beam extraction electrode; a first focusing electrode for electrostatically focusing electron beams having passed through said control electrode, said first focusing electode being of a conductive sheet in which a plurality of oblong apertures elongated in an extended direction of said line cathodes are formed; a second focusing electrode which is disposed adjacent to said first focusing electrode and electrostatically focuses electron beams having passed through said first focusing electrode, said second focusing electrode being of a conductive sheet in which a plurality of oblong apertures elongated in a perpendicular direction to the extended direction of said line cathodes are formed; a deflection electrode for deflecting electron beams having passed through said second focusing electrode; and display means for emitting light by receiving electron beams having passed through said deflection electrode thereon.
Claim 2
Dependent Claim
183 words
An image display apparatus comprising: a plurality of line cathodes which are extended in parallel with each other to emit electrons; an electron beam extraction electrode for extracting electron beams from said line cathodes; a control electrode for selectively controlling a passing amount of electron beams having passed through said electron beam extraction electrode; a first focusing electrode for electrostatically focusing electron beams having passed through said control electrode, said first focusing electode being of a conductive sheet in which a plurality of oblong apertures elongated in an extended direction of said line cathodes are formed; a second focusing electrode which is disposed adjacent to said first focusing electrode and electrostatically focuses electron beams having passed through said first focusing electrode, said second focusing electrode being of a conductive sheet in which a plurality of oblong apertures elongated in a perpendicular direction to the extended direction of said line cathodes are formed; a deflection electrode for deflecting electron beams having passed through said second focusing electrode; and display means for emitting light by receiving electron beams having passed through said deflection electrode thereon.
Claim 3
Dependent Claim
145 words
An image display apparatus comprising: a plurality of line cathodes which are extended in parallel with each other to emit electrons; an electron beam extraction electrode for extracting electron beams from said line cathodes; a control electrode for selectively controlling passing amount of electron beams having passed through said electron beam extraction electrode; a focusing electrode for electrostatically focusing electron beams having passed through said control electrode; a horizontal deflection electrode for electrostatically deflecting electron beams having passed through said focusing electrode in an extended direction of said line cathodes; a vertical deflection electrode for electrostatically deflecting electron beams having passed through said horizontal deflection electrode in an perpendicular direction to the extended direction of said line cathodes; and display means for emitting light by receiving electron beams having passed through said vertical deflection electrode thereon; the above-mentioned components being disposed in this sequential order.
Claim 4
Dependent Claim
145 words
An image display apparatus comprising: a plurality of line cathodes which are extended in parallel with each other to emit electrons; an electron beam extraction electrode for extracting electron beams from said line cathodes; a control electrode for selectively controlling passing amount of electron beams having passed through said electron beam extraction electrode; a focusing electrode for electrostatically focusing electron beams having passed through said control electrode; a horizontal deflection electrode for electrostatically deflecting electron beams having passed through said focusing electrode in an extended direction of said line cathodes; a vertical deflection electrode for electrostatically deflecting electron beams having passed through said horizontal deflection electrode in an perpendicular direction to the extended direction of said line cathodes; and display means for emitting light by receiving electron beams having passed through said vertical deflection electrode thereon; the above-mentioned components being disposed in this sequential order.
Claim 5
Dependent Claim
35 words
An image display apparatus in accordance with claim 2, wherein said focusing electrode is of a conductive sheet wherein a plurality of oblong apertures elongated in an extended direction of said line cathodes are formed.
Claim 6
Dependent Claim
75 words
An image display apparatus in accordance with claim 2, wherein said focusing electrode comprises: a first focusing electrode which is made of a conductive sheet wherein a plurality of oblong apertures elongated in an extended direction of said lines cathodes are formed, and a second focusing electrode which is made of a conductive sheet wherein a plurality of oblong apertures elongated in a perpendicular direction to the extended direction of said line cathodes are formed.
Claim 7
Dependent Claim
172 words
An image display apparatus comprising: a plurality of line cathodes which are extended in parallel with each other to emit electrons; an electron beam extraction electrode for extracting electron beams from said line cathodes; a control electrode for selectively controlling a passing amount of electron beams having passed through said electron beam extraction electrode; a focusing electrode for electrostatically focusing electron beams having passed through said control electrode; a horizontal deflection electrode for electrostatically deflecting electron beams having passed through said focusing electrode in an extended direction of said line cathodes; a vertical deflection electrode for electrostatically deflecting electron beams having passed through said horizontal deflection electrode in a perpendicular direction to the extended direction of said line cathodes; and display means for emitting light by receiving electron beams having passed through vertical deflection electrode thereon; the above-mentioned components being disposed in this sequential order, wherein said horizontal deflection electrode comprises a pair of comb-shaped conductive sheets which are insulatedly interdigitated with each other in a vertical direction on the same plane.
Claim 8
Dependent Claim
172 words
An image display apparatus comprising: a plurality of line cathodes which are extended in parallel with each other to emit electrons; an electron beam extraction electrode for extracting electron beams from said line cathodes; a control electrode for selectively controlling a passing amount of electron beams having passed through said electron beam extraction electrode; a focusing electrode for electrostatically focusing electron beams having passed through said control electrode; a horizontal deflection electrode for electrostatically deflecting electron beams having passed through said focusing electrode in an extended direction of said line cathodes; a vertical deflection electrode for electrostatically deflecting electron beams having passed through said horizontal deflection electrode in a perpendicular direction to the extended direction of said line cathodes; and display means for emitting light by receiving electron beams having passed through vertical deflection electrode thereon; the above-mentioned components being disposed in this sequential order, wherein said horizontal deflection electrode comprises a pair of comb-shaped conductive sheets which are insulatedly interdigitated with each other in a vertical direction on the same plane.
Claim 9
Dependent Claim
36 words
An image display apparatus in accordance with claim 2, wherein said vertical deflection electrode comprises a pair of comb-shaped conductive sheets which are insulatedly interdigitated with each other in a horizontal direction on the same plane.
Claim 10
Dependent Claim
230 words
An image display apparatus comprising: a plurality of line cathodes which are extended in parallel with each other to emit electrons; an electron beam extraction electrode for extracting electron beams for said line cathodes; a control electrode for selectively controlling a passing amount of electron beams having passed through said electron beam extraction electrode; a first focusing electrode for electrostatically focusing electron beams having passed through said control electrode, said first focusing electrode being of a conductive sheet in which a plurality of oblong apertures elongated in an extended direction of said line cathodes are formed; a second focusing electrode which is disposed adjacent to said first focusing electrode and electrostatically focuses electron beams having passed through said first focusing electrode, said second focusing electrode being of a conductive sheet in which a plurality of oblong apertures elongated in a perpendicular direction to the extended direction of said line cathodes are formed; a horizontal deflection electrode for electrostatically deflecting electron means having passed through said focusing electrode in an extended direction of said line cathodes; a vertical deflection electrode for electrostatically deflecting electron beams having passed through said horizontal deflection electrode in an perpendicular direction to the extended direction of said line cathodes; and display means for emitting light by receiving electron beams having passed through said vertical deflection electrode thereon; the above-mentioned components being disposed in this sequential order.
Claim 11
Dependent Claim
230 words
An image display apparatus comprising: a plurality of line cathodes which are extended in parallel with each other to emit electrons; an electron beam extraction electrode for extracting electron beams for said line cathodes; a control electrode for selectively controlling a passing amount of electron beams having passed through said electron beam extraction electrode; a first focusing electrode for electrostatically focusing electron beams having passed through said control electrode, said first focusing electrode being of a conductive sheet in which a plurality of oblong apertures elongated in an extended direction of said line cathodes are formed; a second focusing electrode which is disposed adjacent to said first focusing electrode and electrostatically focuses electron beams having passed through said first focusing electrode, said second focusing electrode being of a conductive sheet in which a plurality of oblong apertures elongated in a perpendicular direction to the extended direction of said line cathodes are formed; a horizontal deflection electrode for electrostatically deflecting electron means having passed through said focusing electrode in an extended direction of said line cathodes; a vertical deflection electrode for electrostatically deflecting electron beams having passed through said horizontal deflection electrode in an perpendicular direction to the extended direction of said line cathodes; and display means for emitting light by receiving electron beams having passed through said vertical deflection electrode thereon; the above-mentioned components being disposed in this sequential order.
Claim 12
Dependent Claim
197 words
An image display apparatus comprising: a plurality of line cathodes which are extended in parallel with each other to emit electrons; an electron beam extraction electrode for extracting electron beams from said line cathodes; a control electrode for selectively controlling passing amount of electron beams having passed through said electron beam extraction electrode; a focusing electrode for electrostatically focusing electron beams having passed through said control electrode, said focusing electrode being of a conductive sheet wherein a plurality of oblong apertures elongated in an extended direction of said line cathodes are formed; a horizontal deflection electrode for electrostatically deflecting electron beams having passed through said focusing electrode in an extended direction of said line cathodes; a vertical deflection electrode for electrostatically deflecting electron beams having passed through said horizontal deflection electrode in an perpendicular direction to the extended direction of said line cathodes; and display means for emitting light by receiving electron beams having passed through said vertical deflection electron thereon; the above-mentioned components being disposed in this sequential order, wherein said horizontal deflection electrode comprises a pair of comb-shaped conductive sheets which are insulatedly interdigitated with each other in a vertical direction on the same plane.
Claim 13
Dependent Claim
197 words
An image display apparatus comprising: a plurality of line cathodes which are extended in parallel with each other to emit electrons; an electron beam extraction electrode for extracting electron beams from said line cathodes; a control electrode for selectively controlling passing amount of electron beams having passed through said electron beam extraction electrode; a focusing electrode for electrostatically focusing electron beams having passed through said control electrode, said focusing electrode being of a conductive sheet wherein a plurality of oblong apertures elongated in an extended direction of said line cathodes are formed; a horizontal deflection electrode for electrostatically deflecting electron beams having passed through said focusing electrode in an extended direction of said line cathodes; a vertical deflection electrode for electrostatically deflecting electron beams having passed through said horizontal deflection electrode in an perpendicular direction to the extended direction of said line cathodes; and display means for emitting light by receiving electron beams having passed through said vertical deflection electron thereon; the above-mentioned components being disposed in this sequential order, wherein said horizontal deflection electrode comprises a pair of comb-shaped conductive sheets which are insulatedly interdigitated with each other in a vertical direction on the same plane.
Claim 14
Dependent Claim
36 words
An image display apparatus in accordance with claim 7, wherein said vertical deflection electrode comprises a pair of comb-shaped conductive sheets which are insulatedly interdigitated with each other in a horizontal direction on the same plane.
Claim 15
Dependent Claim
63 words
An image display apparatus in accordance with claim 7, wherein said horizontal deflection electrode comprises a pair of comb-shaped conductive sheets which are insulatedly interdigitated with each other in a vertical direction on the same plane, and said vertical deflection electrode comprises a pair of comb-shaped conductive sheets which are insulatedly interdigitated with each other in a horizontal direction on the same plane.
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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) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |