US5066947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Very large size display screen
Assignee: Individual
•
Filing: 1989-01-26
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Granted: 1991-11-19
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Expires: 2009-01-26
Abstract
Abstract A very large display screen which is made up of a curtain of suspended optical fibers of different lengths. The fibers are illuminated by light emitting diodes. The light emitting diodes are grouped in triads emitting the three primary colors to produce a colored display.
Inventors
- 👤 Francois Du Castel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:31
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/305
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
140 words
A display device for very large size displays comprising: at least a solid horizontal rectangular frame having front and rear sides and two lateral sides; optical fibers having first and second ends, said first ends being secured to said frame so that said optical fibers are suspended from said frame, said second ends being freely suspended, the fibers belonging to a vertical plane parallel to said front and rear sides of said frame having an equal length and the fibers belonging to a vertical plane parallel to said lateral sides having a length increasing from front to rear, said second freely suspended ends defining a large substantially plane display screen; light emitting diodes located above said frame and optically coupled to said first ends of said optical fibers; and an addressing and control system connected to said light emitting diodes.
Claim 2
Dependent Claim
140 words
A display device for very large size displays comprising: at least a solid horizontal rectangular frame having front and rear sides and two lateral sides; optical fibers having first and second ends, said first ends being secured to said frame so that said optical fibers are suspended from said frame, said second ends being freely suspended, the fibers belonging to a vertical plane parallel to said front and rear sides of said frame having an equal length and the fibers belonging to a vertical plane parallel to said lateral sides having a length increasing from front to rear, said second freely suspended ends defining a large substantially plane display screen; light emitting diodes located above said frame and optically coupled to said first ends of said optical fibers; and an addressing and control system connected to said light emitting diodes.
Claim 3
Dependent Claim
31 words
A very large size display device according to claim 1, wherein said screen is a rectangle having two large size sides parallel to said front and rear sides of said frame.
Claim 4
Dependent Claim
16 words
A very large display device according to claim 1, wherein the optical fibers are plastic fibers.
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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) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-18 | 2003-05-20 | 2003-11-19 | $7700.00 | Window Closed / Lapsed |