US3571897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making a color screen for cathode-ray tubes
Assignee: Raytheon Co
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Filing: 1969-06-04
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Granted: 1971-03-23
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Expires: 1989-06-04
Abstract
Abstract Apparatus for forming phosphor patterns on the faceplate of a cathode-ray tube, including means for electrically charging phosphor powder, means for forming the charged phosphor powder into a stream, and means for scanning the faceplate with the charged phosphor powder stream.
Inventors
- 👤 Hans W Heil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:29
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2277; H01J9/2275; H01J9/2276
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
105 words
Apparatus for depositing color phosphor particles on the viewing panel of a kinescope in a desired geometry comprising: a source of color phosphor particles; means for electrically charging said particles; means for forming and accelerating said particles into a beam; means for supporting a color kinescope tube with the viewing panel thereof transverse to the path of said accelerated particles; means for establishing a vacuum adjacent said viewing panel and around the path of said particles; and means for effecting relatively movement between said particle beam and said viewing panel of the tube to deposit said particles in the desired geometry on said viewing panel.
Claim 2
Dependent Claim
105 words
Apparatus for depositing color phosphor particles on the viewing panel of a kinescope in a desired geometry comprising: a source of color phosphor particles; means for electrically charging said particles; means for forming and accelerating said particles into a beam; means for supporting a color kinescope tube with the viewing panel thereof transverse to the path of said accelerated particles; means for establishing a vacuum adjacent said viewing panel and around the path of said particles; and means for effecting relatively movement between said particle beam and said viewing panel of the tube to deposit said particles in the desired geometry on said viewing panel.
Claim 3
Dependent Claim
34 words
The apparatus according to claim 1 wherein said charging means and said accelerating means are mounted in an evacuable chamber; and means for coupling at least a portion of said tube to said chamber.
Claim 4
Dependent Claim
50 words
The apparatus according to claim 1 including means for effecting relative shifting movement between said particle charging and accelerating means on the one hand and said kinescope tube on the other hand so as to align said particle beam substantially with the effective color centers of the different phosphor colors.
Claim 5
Dependent Claim
61 words
The apparatus according to claim 1 including electrostatic deflection plates disposed in opposed relation about the effective color centers of said phosphor colors; and means for varying the deflection potentials on said plates to scan the particle beam across the surface of said viewing panel, with the effective deflection points for the particle beam substantially coinciding with said effective color centers.
Claim 6
Dependent Claim
28 words
The apparatus according to claim 1 including means mounting said tube for universal swiveling movement relative to said particle beam to scan the beam over said panel surface.
Claim 7
Dependent Claim
43 words
The apparatus according to claim 1 including a source of supply for each of the different color phosphor particles; means for shifting said sources into alignment with said particle charging means; and means for individually controlling the discharge of particles from said sources.
Claim 8
Dependent Claim
29 words
The apparatus according to claim 6 including means for bodily shifting said tube to substantially align the effective color centers therein for the different colors with said particle beam.
Claim 9
Dependent Claim
55 words
The apparatus according To claim 5 including means for supplying, charging, and accelerating phosphor particles for each color phosphor, and means supporting said last-mentioned means within the tube from the plane of the effective color centers for the universal movement to be gravity-biased to a vertical position regardless of the angle assumed by the tube.
Claim 10
Dependent Claim
31 words
The apparatus according to claim 8 in which the exits of said particle supplying, charging, and accelerating means are spaced substantially in alignment with the effective color centers of said tube.
Claim 11
Dependent Claim
33 words
The apparatus according to claim 9 in which said particle supplying, charging, and accelerating means individual to each color are suspended individually from points coincident with the effective color centers of said tube.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |