Multi-touch active display keyboard
First Claim
1. A touch sensitive display device comprising:
- a display fabricated on a first flexible substrate having a thickness of d2, the display having a viewing surface, a display medium and a second flexible substrate between the display medium and the viewing surface, the second flexible substrate having a thickness of d1; and
a plurality of resistive touch sensitive elements under the display, each of the plurality of resistive touch sensitive elements is discrete from each of the other resistive touch sensitive elements, the resistive touch sensitive elements being operable by touching the viewing surface of the display, and each of the plurality of resistive touch sensitive elements having an output for outputting a signal responsive to the viewing surface being touched,wherein each of the plurality of resistive touch sensitive elements defines a non-overlapping region of the viewing surface in which the resistive touch sensitive element produces an output in response to a touch, wherein the plurality of resistive touch sensitive elements are arranged such that two or more simultaneous touches of different regions of the viewing surface produces output signals corresponding to the two or more touches of the viewing surface,wherein each of said resistive touch sensitive elements comprises its own separate upper sensor substrate having a thickness of d3 and its own separate lower sensor substrate having a thickness of d4 and each of the upper and lower sensor substrates is flexible;
wherein the thickness of each lower sensor substrate d4 is defined as;
d4>
d1+d2+d3;
wherein said resistive touch sensitive elements are in a neutral axis of the touch sensitive display device;
wherein each of the resistive touch sensitive elements comprises its own separate upper conducting layer on said separate upper sensor substrate and its own separate lower conducting layer on said separate lower sensor substrate; and
wherein each of the separate upper conducting layers are mutually electrically isolated from one another and each of the separate lower conducting layers are mutually electrically isolated from one another.
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Accused Products
Abstract
A touch sensitive display device includes a display fabricated on a flexible substrate, the display having a viewing surface; and a plurality of touch sensitive elements under the display, each of the plurality of touch sensitive elements including a touch sensitive sensor, the sensors being operable by touching the viewing surface of the display, and each of the plurality of touch sensitive elements having an output for outputting a signal responsive to the viewing surface being touched, wherein each of the plurality of touch sensitive elements defines a region of the viewing surface in which the touch sensitive element produces an output in response to a touch, and wherein the plurality of touch sensitive elements are arranged such that two or more substantially simultaneous touches of different regions of the viewing surface produces output signals corresponding to the two or more touches of the viewing surface.
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Citations
26 Claims
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1. A touch sensitive display device comprising:
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a display fabricated on a first flexible substrate having a thickness of d2, the display having a viewing surface, a display medium and a second flexible substrate between the display medium and the viewing surface, the second flexible substrate having a thickness of d1; and a plurality of resistive touch sensitive elements under the display, each of the plurality of resistive touch sensitive elements is discrete from each of the other resistive touch sensitive elements, the resistive touch sensitive elements being operable by touching the viewing surface of the display, and each of the plurality of resistive touch sensitive elements having an output for outputting a signal responsive to the viewing surface being touched, wherein each of the plurality of resistive touch sensitive elements defines a non-overlapping region of the viewing surface in which the resistive touch sensitive element produces an output in response to a touch, wherein the plurality of resistive touch sensitive elements are arranged such that two or more simultaneous touches of different regions of the viewing surface produces output signals corresponding to the two or more touches of the viewing surface, wherein each of said resistive touch sensitive elements comprises its own separate upper sensor substrate having a thickness of d3 and its own separate lower sensor substrate having a thickness of d4 and each of the upper and lower sensor substrates is flexible; wherein the thickness of each lower sensor substrate d4 is defined as;
d4>
d1+d2+d3;wherein said resistive touch sensitive elements are in a neutral axis of the touch sensitive display device; wherein each of the resistive touch sensitive elements comprises its own separate upper conducting layer on said separate upper sensor substrate and its own separate lower conducting layer on said separate lower sensor substrate; and wherein each of the separate upper conducting layers are mutually electrically isolated from one another and each of the separate lower conducting layers are mutually electrically isolated from one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A flexible display device incorporating a touch sensitive keyboard, said device comprising:
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a display fabricated on a first flexible substrate having a thickness of d2, the display having a viewing surface, a display medium and a second flexible substrate between the display medium and the viewing surface, the second flexible substrate having a thickness of d1; and a resistive touch sensor behind said display surface; wherein said resistive touch sensor has at least two non-overlapping regions each with its own upper and lower electrical contacts, the upper electrical contacts of the at least two non-overlapping regions electrically separate from one another and the lower electrical contacts of the at least two non-overlapping regions electrically separate from one another, a first of said regions being configured to define a plurality of user-operable keys, a second of said regions being configured to define at least one user-operable combination key for operation in combination with one of said plurality of keys; wherein said device has electrical output connections which enable operation of said combination key simultaneously with operation of one of said plurality of keys to be detected, wherein the upper electrical contact of each region of the resistive touch sensor is on its own separate upper flexible sensor substrate having a thickness of d3 and the lower electrical contact of each region of the resistive touch sensor is on its own separate lower sensor substrate having a thickness of d4;
wherein the thickness of each lower sensor substrate d4 is defined as;
d4>
d1+d2+d3; andwherein said resistive touch sensor is in a neutral axis of the flexible display device. - View Dependent Claims (23, 24)
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25. A method of producing a touch screen component comprising a display and a plurality of resistive touch screen elements, the method comprising:
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fabricating the display on a first flexible substrate, the first flexible substrate having a thickness of d2, the display having a viewing surface, a display medium and a second flexible substrate between the display medium and the viewing surface, the second flexible substrate having a thickness of d1, each resistive touch screen element comprising its own separate upper sensor substrate having a thickness of d3 and its own separate lower flexible sensor substrate having a thickness of d4; mounting the plurality of resistive touch screen elements under the display such that each of the plurality of resistive touch screen elements defines a non-overlapping region of the viewing surface in which each of the resistive touch screen elements produces an output in response to a touch of the viewing surface, and such that two or more simultaneous touches of different regions of the viewing surface produces an output signal from an output of the resistive touch screen elements corresponding to the two or more touches of the viewing surface; and fabricating each of said resistive touch screen elements on said lower flexible sensor substrate of the resistive touch screen element;
wherein the thickness of each lower flexible sensor substrate d4 is defined as;
d4>
d1+d2+d3;wherein said resistive touch screen elements are in a neutral axis of the touch screen component; wherein each of the resistive touch screen elements comprises its own separate upper conducting layer on said separate upper sensor substrate and its own separate lower conducting layer on said separate lower flexible sensor substrate; and wherein each of the upper conducting layers are mutually electrically isolated from one another and each of the lower conducting layers are mutually electrically isolated from one another.
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26. A method of producing a touch signal responsive to two or more simultaneous touches of two or more regions of a viewing surface of a ouch sensitive display device, wherein the touch sensitive display device comprises:
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a display fabricated on a first flexible substrate having a thickness of d2, the display having a viewing surface, a display medium and a second flexible substrate between the display medium and the viewing surface, the second flexible substrate having a thickness of d1; and a plurality of resistive touch sensitive elements under the display, each of the plurality of resistive touch sensitive elements being operable by touching the viewing surface of the display, and each of the plurality of resistive touch sensitive elements having an output for outputting a signal responsive to the viewing surface being touched, wherein each of the plurality of resistive touch sensitive elements defines a non-overlapping region of the viewing surface in which the resistive touch sensitive element produces an output in response to a touch, and the two or more regions correspond to two or more different regions defined by the resistive touch sensitive elements, wherein the plurality of resistive touch sensitive elements are arranged such that two or more simultaneous touches of different regions of the viewing surface produces output signals corresponding to the two or more touches of the viewing surface, and wherein each of said resistive touch sensitive elements comprises its own separate upper sensor substrate having a thickness of d3 and its own separate lower sensor substrate having a thickness of d4 and each of the upper and lower sensor substrates is flexible; wherein the thickness of each lower sensor substrate d4 is defined as;
d4>
d1+d2+d3;wherein said resistive touch sensitive elements are in a neutral axis of the touch sensitive display device; wherein each of the resistive touch sensitive elements comprises its own separate upper conducting layer on said upper sensor substrate and its own separate lower conducting layer on said lower sensor substrate; and wherein each of the upper conducting layers are mutually electrically isolated from one another and each of the lower conducting layers are mutually electrically isolated from one another; the method comprising; receiving a signal from each of the resistive touch sensitive elements corresponding to the two or more regions being touched; identifying the two or more regions being touched using the signals from the resistive touch sensitive elements; and outputting a touch signal responsive to the identification.
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Specification