Touch panel that has an image layer and detects bending waves
First Claim
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1. A touch system comprising:
- a substrate configured to have top and bottom surfaces;
a reflective image layer having top and bottom surfaces and configured to display an image, the bottom surface of the image layer being bonded to the top surface of the substrate to form a stack having top and bottom sides; and
at least one sensor configured to detect signals associated with bending waves propagating through the stack,wherein the signals associated with bending waves propagating through the stack are used to identify coordinate locations of at least one touch event on the top or bottom sides of the stack or to identify coordinate locations of touch events on both of the top and bottom sides of the stack.
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Abstract
A touch panel includes a substrate that has top and bottom surfaces. A reflective image layer has top and bottom surfaces and displays an image. The bottom surface of the reflective image layer is bonded to the top surface of the substrate to form a stack having top and bottom sides. At least one sensor detects signals associated with bending waves propagating through the stack. The signals are used to identify coordinate locations of at least one touch event on the top or bottom sides of the stack, or to identify coordinate locations of touch events on both of the top and bottom sides of the stack.
57 Citations
20 Claims
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1. A touch system comprising:
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a substrate configured to have top and bottom surfaces; a reflective image layer having top and bottom surfaces and configured to display an image, the bottom surface of the image layer being bonded to the top surface of the substrate to form a stack having top and bottom sides; and at least one sensor configured to detect signals associated with bending waves propagating through the stack, wherein the signals associated with bending waves propagating through the stack are used to identify coordinate locations of at least one touch event on the top or bottom sides of the stack or to identify coordinate locations of touch events on both of the top and bottom sides of the stack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A touch system comprising:
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a substrate configured to have top and bottom surfaces; an organic light-emitting diode (OLED) image layer having top and bottom surfaces and configured to display an image, the bottom surface of the OLED image layer being bonded to the top surface of the substrate to form a stack having top and bottom sides; and at least one sensor configured to detect signals associated with bending waves propagating through the stack, wherein the signals associated with bending waves propagating through the stack are used to identify coordinate locations of at least one touch event on the top and bottom sides of the stack or to identify coordinate locations of touch events on both of the top and bottom sides of the stack. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A touch system comprising:
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a substrate configured to have top and bottom surfaces; an image layer having top and bottom surfaces and configured to display an image, the bottom surface of the image layer being bonded to the top surface of the substrate to form a stack having top and bottom sides; at least one sensor configured to detect signals associated with bending waves propagating through the stack; and a processor configured to identify coordinate locations of at least one touch event on the top or bottom sides of the stack based on the signals or to identify coordinate locations of touch events on both of the top and bottom sides of the stack based on the signals.
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Specification