Acoustic touch apparatus
First Claim
1. An acoustic touch apparatus, comprising;
- a substrate having a first surface and a second surface, the first and second surfaces capable of propagating surface acoustic waves, the second surface comprising a touch region and the first and second surfaces coupled via a rounded connecting surface;
at least one acoustic wave transducer on the first surface; and
at least one reflective array on the first surface, said transducer capable of transmitting or receiving surface acoustic waves to and from said reflective array, said substrate and said reflective array capable of acoustically coupling surface acoustic waves to propagate between the first and second surfaces, and said substrate having a border region on the first surface that is adapted to hide from view through the substrate the transducer and the reflective array and to preclude distortion of surface acoustic waves propagating over a window in the border region via an acoustic lens that counteracts a phase shift of surface acoustic waves propagating over the window, wherein the border region comprises a border layer on the first surface.
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Accused Products
Abstract
Acoustic touch apparatus comprising a substrate having first and second surfaces capable of propagating surface acoustic waves, the second surface comprising a touch region and the first and second surfaces coupled via a rounded connecting surface; at least one acoustic wave transducer on the first surface; and at least one reflective array on the first surface. The transducer is capable of transmitting or receiving waves to and from the reflective array. The substrate and reflective array can acoustically couple waves between the first and second surfaces. The substrate has a border region on the first surface adapted to hide the transducer and reflective array and preclude distortion of waves propagating over a window in the border region. The border region may have a border layer except at the window and a corrective lens is used proximate the window, or the border region comprises discolored glass except at the window.
52 Citations
20 Claims
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1. An acoustic touch apparatus, comprising;
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a substrate having a first surface and a second surface, the first and second surfaces capable of propagating surface acoustic waves, the second surface comprising a touch region and the first and second surfaces coupled via a rounded connecting surface; at least one acoustic wave transducer on the first surface; and at least one reflective array on the first surface, said transducer capable of transmitting or receiving surface acoustic waves to and from said reflective array, said substrate and said reflective array capable of acoustically coupling surface acoustic waves to propagate between the first and second surfaces, and said substrate having a border region on the first surface that is adapted to hide from view through the substrate the transducer and the reflective array and to preclude distortion of surface acoustic waves propagating over a window in the border region via an acoustic lens that counteracts a phase shift of surface acoustic waves propagating over the window, wherein the border region comprises a border layer on the first surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An acoustic touch apparatus, comprising:
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a substrate having a first surface and a second surface, the first and second surfaces capable of propagating surface acoustic waves, the second surface comprising a touch region and the first and second surfaces coupled via a rounded connecting surface; at least one acoustic wave transducer on the first surface; and at least one reflective array on the first surface, said transducer capable of transmitting or receiving surface acoustic waves to and from said reflective array, said substrate and said reflective array capable of acoustically coupling surface acoustic waves to propagate between the first and second surfaces, and said substrate having a border region on the first surface, wherein the border region comprises a border layer on the first surface and includes an acoustic lens that counteracts a phase shift of surface acoustic waves propagating over a window, the first surface adapted to hide from view through the substrate the transducer and the reflective array and to preclude distortion of surface acoustic waves propagating over the window in the border region, the window being an uncoated area in the border layer.
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19. An acoustic touch apparatus, comprising:
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a substrate having a first surface and a second surface, the first and second surfaces capable of propagating surface acoustic waves, the second surface comprising a touch region and the first and second surfaces coupled via a rounded connecting surface; at least one acoustic wave transducer on the first surface; and at least one reflective array on the first surface, said transducer capable of transmitting or receiving surface acoustic waves to and from said reflective array, said substrate and said reflective array capable of acoustically coupling surface acoustic waves to propagate between the first and second surfaces, and said substrate having a border region on the first surface that is adapted to hide from view through the substrate the transducer and the reflective array and to preclude distortion of surface acoustic waves propagating over a window in the border region via an acoustic lens that counteracts a phase shift of surface acoustic waves propagating over the window, wherein the border region comprises a border layer on the first surface and wherein the substrate and the window comprise transparent glass material and the border region excluding the window comprises colored glass material. - View Dependent Claims (20)
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Specification