Film haptic system having multiple operation points
First Claim
1. A touch feedback actuator comprising:
- a first plurality of plate electrode parts including first and second plate electrode parts that are disposed coplanar on a first plate, the first and second plate electrode parts being spaced apart from each other, and the first plurality of plate electrode parts being electrically insulated from one another;
a second plurality of plate electrode parts including third and fourth plate electrode parts that are disposed coplanar on a second plate, the third and fourth electrode parts being spaced apart from each other, the second plate being separate from the first plate, and the second plurality of plate electrode parts facing the first plurality of plate electrode parts, respectively, to form a plurality of directly opposing pairs of electrode parts, the plurality of pairs of electrode parts each having a space therebetween, and the plurality of pairs of electrode parts including first and second pairs of electrode parts, the first pair of electrode parts having the first and third plate electrode parts, the second pair of electrode parts having the second and fourth electrode parts; and
a plurality of power supply units configured to respectively supply electric signals to the plurality of pairs of electrode parts to cause physical movements to independently occur in corresponding portions of the first plate and the second plate according to the electric signals input to the plurality of pairs of electrode parts, wherein the physical movements are generated in an area of the first plate when touched with a human body, thereby providing a local touch feedback for each of a plurality of movement areas;
wherein a first one of the electrical signals and a resulting first physical movement in a first portion of the first plate over the first pair of electrode parts have a first frequency, and a second one of the electrical signals and a resulting second physical movement in a second portion of the first plate over the second pair of electrode parts have a second frequency, the first and second physical movements being superimposed and a difference in the first and second frequencies being sufficiently small to generate a beat wave at the first plate perceptible as a part of the local touch feedback.
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Accused Products
Abstract
Provided is a thin film type actuator having multi-operation points, capable of various feels of touch or sounds. The film type actuator includes an upper plate and a lower plate, formed of a single plate. Between the upper plate and the lower plate, pairs of electrode parts capable of attracting one another via an electrostatic force. Since each of the pairs of electrode parts functions as an operation point and the upper plate and the lower plate are formed of the single plate, movements of the respective operation points in such a way that a new physical movement different from an original individual movement is generated to generate a haptic feel or a sound. It is possible to generate various haptic feels or sounds by modulating and combining amplitudes and frequencies of the respective operation points.
44 Citations
17 Claims
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1. A touch feedback actuator comprising:
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a first plurality of plate electrode parts including first and second plate electrode parts that are disposed coplanar on a first plate, the first and second plate electrode parts being spaced apart from each other, and the first plurality of plate electrode parts being electrically insulated from one another; a second plurality of plate electrode parts including third and fourth plate electrode parts that are disposed coplanar on a second plate, the third and fourth electrode parts being spaced apart from each other, the second plate being separate from the first plate, and the second plurality of plate electrode parts facing the first plurality of plate electrode parts, respectively, to form a plurality of directly opposing pairs of electrode parts, the plurality of pairs of electrode parts each having a space therebetween, and the plurality of pairs of electrode parts including first and second pairs of electrode parts, the first pair of electrode parts having the first and third plate electrode parts, the second pair of electrode parts having the second and fourth electrode parts; and a plurality of power supply units configured to respectively supply electric signals to the plurality of pairs of electrode parts to cause physical movements to independently occur in corresponding portions of the first plate and the second plate according to the electric signals input to the plurality of pairs of electrode parts, wherein the physical movements are generated in an area of the first plate when touched with a human body, thereby providing a local touch feedback for each of a plurality of movement areas; wherein a first one of the electrical signals and a resulting first physical movement in a first portion of the first plate over the first pair of electrode parts have a first frequency, and a second one of the electrical signals and a resulting second physical movement in a second portion of the first plate over the second pair of electrode parts have a second frequency, the first and second physical movements being superimposed and a difference in the first and second frequencies being sufficiently small to generate a beat wave at the first plate perceptible as a part of the local touch feedback. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A touch feedback actuator comprising:
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first and second plates having a thin-film shape, separate from each other by a distance and parallel to each other; a first plurality of plate electrode parts including first and second plate electrodes that are disposed coplanar on one side of the first plate, the first and second plate electrode parts being spaced apart from each other, and the first plurality of plate electrode parts being electrically insulated from one another; a second plurality of plate electrode parts including third and fourth plate electrode parts that are disposed coplanar on one side of the second plate, the third and fourth plate electrode parts being spaced apart from each other, and the second plurality of plate electrode parts facing the first plurality of plate electrode parts, respectively, to form a plurality of directly opposing pairs of electrode parts, the plurality of pairs of electrode parts each having a space without any solid layer being disposed therebetween, and the plurality of pairs of electrode parts including first and second pairs of electrode parts, the first pair of electrode parts having the first and third plate electrode parts, the second pair of electrode parts having the second and fourth electrode parts; and a plurality of power supply units configured to respectively supply electric signals to the plurality of pairs of electrode parts to cause physical movements to independently occur in corresponding portions of the first plate and the second plate according to the electric signals input to the plurality of pairs of electrode parts, wherein the physical movements are generated in an area of the first plate when touched with a human body, thereby providing a local touch feedback for each of a plurality of movement areas; wherein a first one of the electrical signals and a resulting first physical movement in a first portion of the first plate over the first pair of electrode parts have a first frequency, and a second one of the electrical signals and a resulting second physical movement in a second portion of the first plate over the second pair of electrode parts have a second frequency, the first and second physical movements being superimposed and a difference in the first and second frequencies being sufficiently small to generate a beat wave at the first plate perceptible as a part of the local touch feedback. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification