Display apparatus and control method thereof
AssigneesSamsung Electronics Co., Ltd., Industry-University Cooperation Foundation Hanyang University
InventorsHuijun Shim, Kwankyu Park, Gwanhyung Kim
Life of this patent
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Abstract
The display apparatus includes a display including a touch screen; a plurality of transducers provided to be spaced apart from each other at edges of the touch screen, and configured to transmit and receive an ultrasonic signal with respect to the touch screen; and a processor configured to identify a touch position on the touch screen based on the ultrasonic signal transmitted and received by the plurality of transducers, wherein the transducer includes a plurality of electrodes arranged from an edge side of the touch screen toward an inner side of the touch screen, and a first electrode at the edge side among the plurality of electrodes is shorter than a second electrode at the inner side.
Claims15
A display apparatus comprising:
- a display comprising a touch screen;
- a plurality of transducers provided to be spaced apart from each other at edges of the touch screen, and configured to transmit and receive an ultrasonic signal with respect to the touch screen, wherein each of the plurality of transducers has a detection direction for detecting a touch input, and is disposed at each of a plurality of divided areas of the touch screen such that the detection direction of one of the plurality of transducers is toward a corresponding one of the plurality of divided areas;
- and
- a processor configured to, based on the ultrasonic signal received by one of the plurality of transducers due to the touch input on the corresponding divided area, identify a touch position on the touch screen,
- the transducer comprising a plurality of electrodes arranged from an edge side of the touch screen toward an inner side of the touch screen along the detection direction, and
- a first electrode at the edge side among the plurality of electrodes being shorter than a second electrode at the inner side and each of the plurality of electrodes is extended being convexly curved toward the detection direction such that the plurality of electrodes forms a fan shape.
A method of controlling a display apparatus, the method comprising:
- by a plurality of transducers provided to be spaced apart from each other at edges of a touch screen, transmitting and receiving an ultrasonic signal with respect to the touch screen, wherein each of the plurality of transducers has a detection direction for detecting a touch input, and is disposed at each of a plurality of divided areas of the touch screen such that the detection direction of one of the plurality of transducers is toward a corresponding one of the plurality of divided areas;
- and
- based on the ultrasonic signal received by one of the plurality of transducers due to the touch input on the corresponding divided area, identifying a touch position on the touch screen,
- the transducer comprising a plurality of electrodes arranged from an edge side of the touch screen toward an inner side of the touch screen along the detection direction, and
- a first electrode at the edge side among the plurality of electrodes being shorter than a second electrode at the inner side and each of the plurality of electrodes is extended being convexly curved toward the detection direction such that the plurality of electrodes forms a fan shape.
Dependencies are inferred from the claim text.