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US 9,001,045 B2Granted
Cost efficient element for combined piezo sensor and actuator in robust and small touch screen realization and method for operation thereof
AssigneeNokia Corporation
InventorsPauli Laitinen, Juhani Tuovinen
Life of this patent
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Abstract
A device comprising a piezo element includes a piezo-electric material the piezo element including a piezo actuator, and at least one piezo sensor coupled to the piezo actuator, wherein the piezo actuator and the at least one piezo sensor include a common element.
Claims32
A device comprising:
- a piezo element comprising a piezo-electric material, the piezo element comprising:
- a piezo actuator defining a first plane and configured to displace in a first direction perpendicular to the first plane;
- at least one piezo sensor physically isolated from said piezo actuator by a gap formed in the first plane that runs perpendicular to the direction, the at least one piezo sensor arranged such that a touch input sensed at the piezo sensor results in a tactile response at the piezo actuator;
- wherein the piezo actuator and the at least one piezo sensor comprise a common electrode.
1 more element
A mobile device comprising:
- a sensor/actuator device having a first side and a second side comprising:
- a piezo element comprising a piezo-electric material the piezo element comprising:
- a piezo actuator defining a first plane and configured to displace in a first direction perpendicular to the first plane;
- and
- at least one piezo sensor physically isolated from said piezo actuator by a gap formed in the first plane that runs perpendicular to the direction, the at least one piezo sensor arranged such that a touch input sensed at the piezo sensor results in a tactile response at the piezo actuator;
- a display having a first side and a second side, wherein said first side of said display is located in opposition to said first side of said sensor/actuator device;
- and
- a processor coupled to said piezo actuator and said at least one piezo sensor.
5 more elements
A method comprising:
- providing a sensor/actuator device having a first side and a second side comprising:
- a piezo element comprising a piezo-electric material the piezo element comprising a piezo actuator and at least one piezo sensor;
- locating the piezo actuator in a first plane such that displacement of the piezo actuator is in a first direction perpendicular to the first plane;
- isolating the at least one piezo sensor physically from said piezo actuator by a gap formed in the first plane that runs perpendicular to the direction;
- locating the at least one piezo sensor substantially in the first plane of the piezo actuator;
- configuring a ground electrode to divide the piezo element, and further configuring the ground electrode to support the piezo actuator and the at least one piezo sensor substantially in the first plane of the piezo actuator;
- providing a display having a first side and a second side, wherein said first side of said display is located in opposition to said first side of said sensor/actuator device;
- detecting an activation of said at least one piezo sensor in response to a force applied to said display;
- and
- operating said piezo actuator to provide tactile feedback in response to said activation of said piezo sensor.
7 more elements
A device comprising:
- a sensor/actuator device having a first side and a second side comprising:
- a piezo element comprising a piezo-electric material the piezo element comprising:
- a piezo actuator defining a first plane and configured to displace in a first direction perpendicular to the first plane;
- at least one piezo sensor physically isolated from said piezo actuator by a gap formed in the first plane that runs perpendicular to the direction;
- the at least one piezo sensor being located substantially in the first plane of the piezo actuator;
- a display having a first side and a second side, wherein said first side of said display is located in opposition to said first side of said sensor/actuator device;
- means for detecting an activation of said at least one piezo sensor in response to a force applied to said display;
- and
- means for operating said piezo actuator to provide tactile feedback in response to said activation of said piezo sensor.
6 more elements
Dependencies are inferred from the claim text.