Abstract: One or more transparent transistor force sensitive structures can be included in an electronic device. The transistor force sensitive structures(s) is 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 of the electronic device. As one example, the one or more transparent transistor force sensitive structures may be included in a display stack of a display in an electronic device.

Abstract: An electronic device includes one or more transparent strain sensors configured to detect strain based on an amount of force applied to the electronic device, a component in the electronic device, and/or an input surface of the electronic device. The one or more transparent strain sensors may be included in or positioned below an input surface that is configured to receive touch inputs from a user. The area below the input surface can be visible to a user when the user is viewing the input surface. The one or more transparent strain sensors are formed with a nanostructure, including a nanomesh or nanowires.

Abstract: An optically-transparent conductive structure is disclosed. The optically-transparent conductive structure can be used within a display stack of an electronic device. The optically-transparent conductive structure may be formed by depositing a metal nanowire layer that on a surface of a polarizing layer within the display stack. An encapsulation layer is disposed over the metal nanowire layer that protects the metal nanowire from corrosion. An electrical coupling is provided through or within the encapsulation layer and electrically couples to the metal nanowire layer. The electrical coupling is connected to an electrical circuit within the electronic device.

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.

Abstract: An optically transparent force sensor that may compensate for environmental effects, including, for example, variations in temperature of the device or the surroundings. In some examples, two force-sensitive layers are separated by a compliant layer. The relative electrical response of the two force-sensitive layers may be used to compute an estimate of the force of a touch that reduces the effect of variations in temperature. In some examples, piezoelectric films having anisotropic strain properties are used to reduce the effects of temperature.

Abstract: An optically transparent force sensor that may compensate for environmental effects, including, for example, variations in temperature of the device or the surroundings. In some examples, two force-sensitive layers are separated by a compliant layer. The relative electrical response of the two force-sensitive layers may be used to compute an estimate of the force of a touch that reduces the effect of variations in temperature. In some examples, piezoelectric films having anisotropic strain properties are used to reduce the effects of temperature.

Abstract: An optically transparent force sensor element is compensated for effects of environment by comparing a force reading from a first force-sensitive component with a second force-sensitive components. The first and second force-sensitive components disposed on opposite sides of a flexible substrate within a display stack.

Abstract: An optically transparent force sensor, which may be used as input to an electronic device. The optically transparent force sensor may be configured to compensate for variations in temperature using two or more force-sensitive components that are formed from materials having different temperature- and strain-dependent responses.

Abstract: An optically transparent force sensor that may compensate for environmental effects, including, for example, variations in temperature of the device or the surroundings. In some examples, two force-sensitive layers are separated by a compliant layer. The relative electrical response of the two force-sensitive layers may be used to compute an estimate of the force of a touch that reduces the effect of variations in temperature. In some examples, piezoelectric films having anisotropic strain properties are used to reduce the effects of temperature.

Abstract: An optically transparent force sensor element includes multi-layer electrodes of two materials having different gauge factors to increase sensitivity of measured force magnitude. A passivation layer is positioned between the electrode layers in each element. One gauge factor may be positive while the other gauge factor may be negative.

Abstract: A transparent force sensor for detecting an applied force on a surface of a device. The transparent force sensor includes a transparent force-sensitive film having an array of strain-relief features oriented along a first direction. The transparent force-sensitive film is formed from a transparent piezoelectric material that exhibits a substantially reduced net charge when strained along a primary direction. The force sensor also includes a display element disposed on one side of the transparent force-sensitive film.