TOUCH-PRESSURE SENSING IN A DISPLAY PANEL
First Claim
Patent Images
1. A touch-pressure sensitive panel, comprising:
- a locally and resiliently deformable waveguide having an exterior surface for receiving localized touch pressure from a user, and a wetting surface opposite the exterior surface;
a de-wettable layer presenting a de-wettable surface arranged beneath the wetting surface, such that the localized touch pressure reversibly increases localized optical wetting of the de-wettable surface by the wetting surface; and
an imaging detector configured to receive light coupled into the de-wettable layer due to the localized optical wetting.
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Abstract
A touch-pressure sensitive panel includes a locally and resiliently deformable waveguide having an exterior surface for receiving localized touch pressure from a user, and a wetting surface opposite the exterior surface. The panel also includes a de-wettable layer presenting a de-wettable surface arranged beneath the wetting surface, such that the localized touch pressure reversibly increases localized optical wetting of the de-wettable surface by the wetting surface. The panel also includes an imaging detector configured to receive light coupled into the de-wettable layer due to the localized optical wetting.
170 Citations
20 Claims
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1. A touch-pressure sensitive panel, comprising:
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a locally and resiliently deformable waveguide having an exterior surface for receiving localized touch pressure from a user, and a wetting surface opposite the exterior surface; a de-wettable layer presenting a de-wettable surface arranged beneath the wetting surface, such that the localized touch pressure reversibly increases localized optical wetting of the de-wettable surface by the wetting surface; and an imaging detector configured to receive light coupled into the de-wettable layer due to the localized optical wetting. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for receiving input from a user of a touch-pressure sensitive panel, the method comprising:
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receiving, from an imaging detector in the panel, video in which a localized optical wetting of a de-wettable surface is resolved positionally and temporally, the localized optical wetting caused by a localized touch pressure received on an exterior surface of a locally and resiliently deformable waveguide having a wetting surface opposite the exterior surface, wherein the de-wettable surface is arranged directly beneath the wetting surface. - View Dependent Claims (18)
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19. A touch-pressure sensitive panel, comprising:
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a locally and resiliently deformable waveguide having an exterior surface for receiving localized touch pressure from a user, and a wetting surface opposite the exterior surface; a de-wettable layer presenting a textured de-wettable surface arranged beneath the wetting surface, such that the localized touch pressure reversibly increases localized optical wetting of the de-wettable surface by the wetting surface; an illumination source configured to emit narrow-band infrared light, which is transmitted into the waveguide; an array of light-gating or light-emissive elements arranged beneath the de-wettable layer and configured to form a visible display image; an imaging detector configured to receive light coupled into the de-wettable layer due to the localized optical wetting, the imaging detector comprising an array of light-sensitive elements coplanar to the array of light-gating or light-emissive elements; and a controller configured to direct the array of light-gating or light-emissive elements to form the display image and to receive, from the imaging detector, video in which the localized optical wetting is resolved positionally and temporally. - View Dependent Claims (20)
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Specification