Transparent strain sensors in an electronic device
First Claim
1. A transparent strain sensor positioned in a visible area of an electronic device, the transparent strain sensor comprising:
- a transparent strain sensitive element comprised of a first transparent conductive material having a first gauge factor;
a transparent strain signal line connected directly to the transparent strain sensitive element and comprised of a different second transparent conductive material having a second gauge factor, wherein the first gauge factor is greater than the second gauge factor.
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Accused Products
Abstract
One or more strain sensors can be included in an electronic device. Each strain sensor includes a strain sensitive element and one or more strain signal lines connected directly to the strain sensitive element. The strain sensor(s) are used to detect a force that is applied to the electronic device, to a component in the electronic device, and/or to an input region or surface of the electronic device. A strain sensitive element is formed or processed to have a first gauge factor and the strain signal line(s) is formed or processed to have a different second gauge factor. Additionally or alternatively, a strain sensitive element is formed or processed to have a first conductance and the strain signal line(s) is formed or processed to have a different second conductance.
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Citations
24 Claims
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1. A transparent strain sensor positioned in a visible area of an electronic device, the transparent strain sensor comprising:
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a transparent strain sensitive element comprised of a first transparent conductive material having a first gauge factor; a transparent strain signal line connected directly to the transparent strain sensitive element and comprised of a different second transparent conductive material having a second gauge factor, wherein the first gauge factor is greater than the second gauge factor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A transparent strain sensor positioned in a visible area of an electronic device, the transparent strain sensor comprising:
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a transparent strain sensitive element comprising a hybrid transparent conductive material that includes; a first transparent conductive segment having a first gauge factor and a first electrical resistance; and a second transparent conductive segment connected to the first conductive segment that has a second gauge factor and a second electrical resistance, wherein the first gauge factor is greater than the second gauge factor and the first electrical resistance is greater than the second electrical resistance. - View Dependent Claims (13, 14)
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15. A method for producing a transparent strain sensor, the method comprising:
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providing a transparent strain sensitive element on a substrate, wherein the transparent strain sensitive element comprises one or more first transparent conductive materials having a first gauge factor; and providing a transparent strain signal line that is connected directly to the transparent strain sensitive element on the substrate, wherein the transparent strain signal line comprises one or more second transparent conductive materials that are different from the one or more first transparent conductive materials and have a different second gauge factor. - View Dependent Claims (16)
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17. A method for producing a transparent strain sensor, the method comprising:
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providing a transparent strain sensitive element on a substrate, wherein the transparent strain sensitive element comprises one or more transparent conductive materials; providing a transparent strain signal line that is connected directly to the transparent strain sensitive element on the substrate; and processing the one or more transparent conductive materials in the transparent strain sensitive element to adjust a property of the one or more transparent conductive materials to increase a gauge factor of the transparent strain sensitive element. - View Dependent Claims (18, 19, 20)
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21. A method for producing a transparent strain sensor, the method comprising:
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providing a transparent strain sensitive element on a substrate; providing a transparent strain signal line that is connected directly to the transparent strain sensitive element on the substrate, wherein the transparent strain signal line comprises one or more transparent conductive materials; and processing the one or more transparent conductive materials in the transparent strain signal line to adjust a property of the one or more transparent conductive materials to increase a conductance of the transparent strain signal line. - View Dependent Claims (22)
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23. An electronic device, comprising:
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a display stack for a display, comprising; a cover glass; and a strain sensing structure positioned below the cover glass, the strain sensing structure comprising; a substrate; a first transparent strain sensitive element positioned on a first surface of the substrate; a second transparent strain sensitive element positioned on a second surface of the substrate; and one or more transparent strain signal lines connected directly to each transparent strain sensitive element, wherein the first and the second transparent strain sensitive elements have a gauge factor that is greater than a gauge factor of the transparent strain signal lines, and wherein the first and the second transparent strain sensitive elements and the transparent strain signal lines are positioned in an area that is visible when viewing the display; sense circuitry electrically connected to the transparent strain signal lines; and a controller operably connected to the sense circuitry and configured to determine an amount of force applied to the cover glass based on the signals received from the sense circuitry. - View Dependent Claims (24)
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Specification