US4103205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat display device with beam guide
Assignee: RCA Licensing Corp
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Filing: 1976-12-01
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Granted: 1978-07-25
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Expires: 1996-12-01
Abstract
Abstract An evacuated envelope has a rectangular display section and a gun section at one side of the display section. The display section includes rectangular front and back walls in closely spaced, substantially parallel relation, and a plurality of spaced, substantially parallel support walls between the front and back walls forming a plurality of parallel channels. The gun section extends across one end of the channels and includes gun structure which will selectively direct one or more electron beams along each of the channels. In each of the channels is a beam guide which utilizes "slalom focusing" to confine the electrons in a direction normal to the front and back walls and guide the beam along the length of the channel wherein the electron beam is confined to an undulating path along the channel. The beam guide also includes means for laterally confining the electrons in the beam. The beam guide also permits selective deflection of the electron beam out of the guide toward a phosphor screen on the inner surface of the front wall.
Inventors
- 👤 Thomas Lloyd Credelle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:51
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/124; H01J29/00; H01J29/46
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
109 words
An electron display device comprising: an evacuated envelope having a front wall, a phosphor screen on the inner surface of said front wall, means in said device for generating a beam of electrons and directing said beam in a path generally parallel to and across said front wall, means along said beam path for causing said beam to travel in a substantially undulating path with the undulations thereof toward and away from said screen and for selectively deflecting said beam out of said path toward said phosphor screen at selected points along said path, and means along said path for laterally confining the electrons to a relatively narrow beam.
Claim 2
Dependent Claim
109 words
An electron display device comprising: an evacuated envelope having a front wall, a phosphor screen on the inner surface of said front wall, means in said device for generating a beam of electrons and directing said beam in a path generally parallel to and across said front wall, means along said beam path for causing said beam to travel in a substantially undulating path with the undulations thereof toward and away from said screen and for selectively deflecting said beam out of said path toward said phosphor screen at selected points along said path, and means along said path for laterally confining the electrons to a relatively narrow beam.
Claim 3
Dependent Claim
61 words
An electron display device in accordance with claim 1 in which the means for causing the beam to travel in an undulating path includes a set of spaced, parallel electrical conductors substantially parallel to said front wall, and means forming ground planes on each side of said conductors with said ground planes being spaced from and substantially parallel to said conductors.
Claim 4
Dependent Claim
43 words
An electron display device in accordance with claim 2 in which the means forming the ground plane on the side of the set of conductors toward the phosphor screen has openings through which the electron beam can pass when the beam is deflected.
Claim 5
Dependent Claim
34 words
An electron display device in accordance with claim 3 in which the means for laterally confining the electrons includes a conductor extending longitudinally along said beam path at each side of said beam path.
Claim 6
Dependent Claim
5 words
An electron display device comprising:
Claim 7
Dependent Claim
5 words
An electron display device comprising:
Claim 8
Dependent Claim
134 words
an evacuated envelope having closely spaced, substantially parallel, front and back walls, and a plurality of spaced, substantially parallel support walls extending substantially perpendicularly between said front and back walls and forming a plurality of channels extending across said front and back walls, a phosphor screen along the inner surface of said front wall in each of said channels, means at one end of said channels for generating and directing electrons along each of said channels, means along each of said channels for causing said electrons to travel as beams of electrons in substantially undulating paths but permitting said beams to be deflected out of said paths toward said phosphor screen at selected points along said paths, and means along each of said paths for laterally confining the electrons to a relatively narrow beam.
Claim 9
Dependent Claim
134 words
an evacuated envelope having closely spaced, substantially parallel, front and back walls, and a plurality of spaced, substantially parallel support walls extending substantially perpendicularly between said front and back walls and forming a plurality of channels extending across said front and back walls, a phosphor screen along the inner surface of said front wall in each of said channels, means at one end of said channels for generating and directing electrons along each of said channels, means along each of said channels for causing said electrons to travel as beams of electrons in substantially undulating paths but permitting said beams to be deflected out of said paths toward said phosphor screen at selected points along said paths, and means along each of said paths for laterally confining the electrons to a relatively narrow beam.
Claim 10
Dependent Claim
96 words
An electron display device in accordance with claim 5 in which the means for causing the beam to travel in an undulating path includes a set of spaced, parallel wires substantially parallel to the walls of said device and extending across said channels, means for forming a first ground plane substantially parallel to and spaced from said set of wires between said set of wires and the back wall and means for forming a second ground plane substantially parallel to and spaced from said set of wires between said set of wires and the front wall.
Claim 11
Dependent Claim
36 words
An electron display device in accordance with claim 6 in which the means forming the second ground plane has a plurality of spaced openings through which the electron beam can pass when the beams are deflected.
Claim 12
Dependent Claim
33 words
An electron display device in accordance with claim 7 in which the means for laterally confining the electrons in each beam includes a conductor extending longitudinally along each side of each beam path.
Claim 13
Dependent Claim
41 words
An electron display device in accordance with claim 8 in which the means forming the first ground plane includes a metal member extending along the inner surface of the back wall and the laterally confining conductors extend along said metal member.
Claim 14
Dependent Claim
25 words
An electron display device in accordance with claim 9 in which the laterally confining conductors are projections extending between the metal member and said wires.
Claim 15
Dependent Claim
37 words
An electron display device in accordance with claim 10 in which the laterally confining conductors are on the surface of the support walls and extending along the channel between the set of wires and the metal member.
Claim 16
Dependent Claim
20 words
An electron display device in accordance with claim 10 in which the laterally confining conductors project from the metal member.
Claim 17
Dependent Claim
56 words
An electron display device in accordance with claim 12 in which the metal member is a plate having a plurality of spaced, parallel grooves in its surface facing the front wall and extending longitudinally along the chamber with at least one groove being in each chamber, the side of said grooves forming the laterally confining conductors.
Claim 18
Dependent Claim
18 words
An electron display device in accordance with claim 13 in which the grooves are arcuate in cross section.
Claim 19
Dependent Claim
65 words
An electron display device in accordance with claim 9 in which the back wall has a plurality of parallel grooves in its inner surface, each of said grooves being of arcuate cross section and extending longitudinally along a channel and a metal film on the surface of each of said grooves, said metal film forming the first metal ground plane and the laterally confining conductors.
Claim 20
Dependent Claim
79 words
An electron display device in accordance with claim 9 in which the first ground plane comprises a plurality of metal films on the inner surface of the back wall and extending longitudinally along the channels with each of the ground plane films being along a separate beam path, and the laterally confining conductors are metal films on the inner surface of the back wall with a confining conductor extending along each side of each of the ground plane films.
Claim 21
Dependent Claim
56 words
An electron display device in accordance with claim 8 in which the first ground plane and the laterally confining means include a metal film extending across the inner surface of the back wall and a plurality of spaced, parallel wires extending longitudinally along each channel between the back wall and the first said set of wires.
Claim 22
Dependent Claim
27 words
An electron display device in accordance with claim 8 in which laterally confining conductors are between said set of wires and the front wall of the envelope.
Claim 23
Dependent Claim
39 words
An electron display device in accordance with claim 18 in which the laterally confining conductors are on the surfaces of the support walls and extend along the channels between the set of wires and the second ground plane means.
Claim 24
Dependent Claim
24 words
An electron display device in accordance with claim 18 in which the laterally confining conductors are spaced, parallel wires extending longitudinally along the channels.
Claim 25
Dependent Claim
40 words
An electron display device in accordance with claim 20 in which the second ground plane means is a conductive member extending transversely across and longitudinally along the channels and the laterally confining wires extend along the ground plane conductive member.
Claim 26
Dependent Claim
28 words
An electron display device in accordance with claim 21 in which the laterally confining wires project from the ground plane conductive member toward the first set of wires.
Claim 27
Dependent Claim
56 words
An electron display device in accordance with claim 21 in which the ground plane conductive member comprises a plurality of coplanar wires extending longitudinally along the channels and spaced transversely across the channels and the laterally confining wires are in the same plane as but are spaced from the wires of the ground plane conductive member.
Claim 28
Dependent Claim
37 words
An electron display device in accordance with claim 18 in which the second ground plane means is a metal plate and the laterally confining conductors are projections extending from the plate toward the first set of wires.
Claim 29
Dependent Claim
53 words
An electron display device in accordance with claim 24 in which the metal plate has a plurality of spaced parallel grooves in its surface facing the back wall and extending longitudinally along the chamber with at least one groove being in each chamber, the sides of said grooves forming the laterally confining conductors.
References Cited (Backward Citations)
US2858464A
Cited
US2953707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-24 | 1982-01-23 | 1982-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-24 | 1986-01-23 | 1986-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-24 | 1990-01-23 | 1990-07-25 | $7700.00 | Window Closed / Lapsed |