Patent US4822143A successfully refreshed from Google Patents.
US4822143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Picture-reproducing arrangement using a picture tube, and method of manufacturing same
Assignee: Nokia Deutschland GmbH
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Filing: 1987-10-21
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Granted: 1989-04-18
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Expires: 2007-10-21
Abstract
Abstract An arrangement to produce pictures using light polarized in different directions consists of a picture tube to whose faceplate a polarizer film and a polymer liquid crystal film provided on both sides with transparent conductive layers are joined with a transparent adhesive. By using a polymer liquid crystal film, the arrangement can also be realized on picture tubes having curved faceplates. The polarizer film and the polymer liquid crystal film are joined together preferably by laminating, and the laminate is joined to the faceplate with an adhesive. The polymer liquid crystal film preferably contains a ferroelectric liquid crystal material.
Inventors
- 👤 Rolf Zondler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:56
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133365; G02F1/1313; H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J2229/00; H01J2229/89; H01J2229/8913; H01J2229/8922
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
58 words
An arrangement for reproducing pictures, comprising: a picture tube having a facepalte; a polarizer; and a liquid crystal cell provided with transparent electrode areas on both sides, said liquid crystal cell and said polarizer having surfaces in juxtaposition, said juxtaposed polarizer and liquid cell being located directly on a front surface of the faceplate of the picture tube.
Claim 2
Dependent Claim
58 words
An arrangement for reproducing pictures, comprising: a picture tube having a facepalte; a polarizer; and a liquid crystal cell provided with transparent electrode areas on both sides, said liquid crystal cell and said polarizer having surfaces in juxtaposition, said juxtaposed polarizer and liquid cell being located directly on a front surface of the faceplate of the picture tube.
Claim 3
Dependent Claim
45 words
An arrangement as claimed in claim 1, wherein the liquid crystal cell and the polarizer are joined together at their juxtaposed surfaces and the thus joined polarizer and liquid crystal cell are further joined to the faceplate of the picture tube with a transparent adhesive.
Claim 4
Dependent Claim
29 words
An arrangement as claimed in claim 2, wherein he adhesive has refractive index which lies between the refractive indices of the faceplate and the material joined to said faceplate.
Claim 5
Dependent Claim
20 words
An arrangement as claimed in claim 1, wherein the liquid crystal cell is constituted by a polymer liquid crystal film.
Claim 6
Dependent Claim
26 words
An arrangement as claimed in claim 4, wherein the polymer liquid crystal film contains a ferroelectric liquid crystal material which is bonded to a polymer material.
Claim 7
Dependent Claim
51 words
An arrangement as claimed in claim 2, additionally comprising a layer of conductive adhesive disposed between at least a portion of the joined polarizer and liquid crystal cell and the faceplate, said conductive adhesive being in contact with at least one of said transparent electrode areas of said liquid crystal cell.
Claim 8
Dependent Claim
83 words
An arrangement for reproducing pictures, comprising: a picture tube having a faceplate; a polarizer; a liquid crystal cell provided with transparent electrode areas on both sides, said liquid crystal cell and said polarizer having juxtaposed surfaces joined together, said joined polarizer and liquid crystal cell being disposed directly on the faceplate of the picture tube; and a layer of adhesive joining said faceplate to said joined polarizer and liquid crystal cell, said adhesive layer being constituted by transparent portion and a conductive portion.
Claim 9
Dependent Claim
83 words
An arrangement for reproducing pictures, comprising: a picture tube having a faceplate; a polarizer; a liquid crystal cell provided with transparent electrode areas on both sides, said liquid crystal cell and said polarizer having juxtaposed surfaces joined together, said joined polarizer and liquid crystal cell being disposed directly on the faceplate of the picture tube; and a layer of adhesive joining said faceplate to said joined polarizer and liquid crystal cell, said adhesive layer being constituted by transparent portion and a conductive portion.
Claim 10
Dependent Claim
20 words
An arrangement as claimed in claim 7, wherein the liquid crystal cell is constituted by a polymer liquid crystal film.
Claim 11
Dependent Claim
26 words
An arrangement as claimed in claim 8, wherein the polymer liquid crystal film contains a ferroelecric liquid crystal material which is bonded to a polymer material.
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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) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |