Patent US6087599A successfully refreshed from Google Patents.
US6087599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Touch panels having plastic substrates
Assignee: Whitaker LLC
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Filing: 1997-11-24
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Granted: 2000-07-11
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Expires: 2017-11-24
Abstract
Abstract The present invention is directed to a touch panel for use in a touch position sensor. The touch panel includes a substrate fabricated at least partially from plastic materials. The plastic may be a polystyrene and/or copolymers of polystyrene. The touch panel utilizes transverse acoustic waves having a frequency in the range of 0.2 to 2.0 Megahertz to detect a touch on the touch panel.
Inventors
- 👤 Terence J. Knowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:58
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/041; G06F3/043; G06F3/0436
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
91 words
A touch panel for use in a touch position sensor, comprising: a substrate of polystyrene having four edges and a thickness chosen to support transverse acoustic waves; at least one transducer disposed on two of said edges, each transducer for transmitting transverse acoustic waves having a frequency in the range of about 0.2 to 2.0 Megahertz to and receiving transverse acoustic waves having a frequency in the range of about 0.2 to 2.0 Megahertz from the substrate; and selectively disposed reflective arrays for reflecting a portion of said transverse acoustic waves.
Claim 2
Dependent Claim
91 words
A touch panel for use in a touch position sensor, comprising: a substrate of polystyrene having four edges and a thickness chosen to support transverse acoustic waves; at least one transducer disposed on two of said edges, each transducer for transmitting transverse acoustic waves having a frequency in the range of about 0.2 to 2.0 Megahertz to and receiving transverse acoustic waves having a frequency in the range of about 0.2 to 2.0 Megahertz from the substrate; and selectively disposed reflective arrays for reflecting a portion of said transverse acoustic waves.
Claim 3
Dependent Claim
22 words
A touch panel as recited in claim 1 were in said substrate has a thickness which will not support surface acoustic waves.
Claim 4
Dependent Claim
19 words
A touch panel as recited in claim 1 were in said transverse acoustic zeroth order horizontally polarized shear waves.
Claim 5
Dependent Claim
19 words
A touch panel as recited in claim 1 wherein said reflective arrays are gratings disposed peripherally about said substrate.
Claim 6
Dependent Claim
18 words
A touch panel as recited in claim 1, wherein said substrate has a hard coat material disposed thereon.
Claim 7
Dependent Claim
77 words
A touch panel for use in a touch position sensor, comprising: a substrate of polystyrene having four edges and a thickness chosen to support transverse acoustic; at least one transducer selectively disposed on each of said edges, each transducer for transmitting transverse acoustic waves having a frequency in the range of about 0.2 to 2.0 Megahertz to or receiving transverse acoustic waves having a frequency in the range of about 0.2 to 2.0 Megahertz from the substrate.
Claim 8
Dependent Claim
77 words
A touch panel for use in a touch position sensor, comprising: a substrate of polystyrene having four edges and a thickness chosen to support transverse acoustic; at least one transducer selectively disposed on each of said edges, each transducer for transmitting transverse acoustic waves having a frequency in the range of about 0.2 to 2.0 Megahertz to or receiving transverse acoustic waves having a frequency in the range of about 0.2 to 2.0 Megahertz from the substrate.
Claim 9
Dependent Claim
57 words
A touch panel as recited in claim 6 wherein transducers on a first edge of said substrate are coupled selectively to transducers on a second edge of said substrate and transducers disposed on a third on said substrate are coupled selectively to transducers on a forth edge to effect the transmission and reception of transverse acoustic waves.
Claim 10
Dependent Claim
22 words
A touch panel as recited in claim 6 where in said substrate has a thickness which will not support surface acoustic waves.
Claim 11
Dependent Claim
21 words
A touch panel as recited in claim 6 where in said transverse acoustic waves are zeroth order horizontally polarized shear waves.
Claim 12
Dependent Claim
14 words
A touch panel as recited in claim 6 where in said transducers are lead-zirconium.
References Cited (Backward Citations)
US33151A
Cited
US3673327A
Cited
US4406045A
Cited
US4295214A
Cited
US4511760A
Cited
US4700176A
Cited
USRE33151E
Cited
US4791416A
Cited
US4746914A
Cited
US4644100A
Cited
US4642423A
Cited
US4645870A
Cited
US4680429A
Cited
US4931965A
Cited
USH1109H
Cited
EP0364983A2
Cited
EP0435203A2
Cited
US5097102A
Cited
US5072427A
Cited
US5260521A
Cited
US5329070A
Cited
US5484967A
Cited
US5451723A
Cited
US5591945A
Cited
US5854450A
Cited
US5648643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-07-11 | 2004-01-10 | 2004-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-11 | 2008-01-10 | 2008-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-11 | 2012-01-10 | 2012-07-11 | $7700.00 | Window Closed / Lapsed |