TOUCH PAD HAVING ELECTROMAGNETIC INTERFERENCE SHIELDING PLATE
First Claim
1. A touch pad comprising:
- a touch plate for generating, when a touch is generated on a surface of the touch plate, a change of a physical property;
a touch sensor coupled to the touch plate for detecting a position of the generated touch by measuring the change of the physical property; and
an ElectroMagnetic Interference (EMI) shielding plate disposed adjacent to or attached to a surface of the touch plate and formed with a plurality of openings.
1 Assignment
0 Petitions
Accused Products
Abstract
A touch pad including an ElectroMagnetic Interference (EMI) shielding plate and method for detecting a touch on the touch pad is provided. The touch pad includes a touch plate for generating, when a touch is generated on a surface of the touch plate, a change of a physical property, a touch sensor coupled to the touch plate for detecting a position of the generated touch by measuring the change of the physical property, and an EMI shielding plate disposed adjacent to or attached to a surface of the touch plate and formed with a plurality of openings. The density of the openings formed at a position of the EMI shielding plate increases as the position becomes farther from the touch sensor. Accordingly, the touch pad having an EMI shielding plate can more accurately detect a touch generated at any position close to or remote from the touch sensor of the touch pad, and thereby increase user convenience of a portable terminal.
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Citations
14 Claims
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1. A touch pad comprising:
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a touch plate for generating, when a touch is generated on a surface of the touch plate, a change of a physical property; a touch sensor coupled to the touch plate for detecting a position of the generated touch by measuring the change of the physical property; and an ElectroMagnetic Interference (EMI) shielding plate disposed adjacent to or attached to a surface of the touch plate and formed with a plurality of openings. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for detecting a touch on a touch pad, the method comprising:
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generating a change of a physical property when a touch on a surface of a touch plate is generated; and detecting a position of the generated touch by measuring the change of the physical property, wherein an ElectroMagnetic Interference (EMI) shielding plate is disposed adjacent to or attached to a surface of the touch plate and formed with a plurality of openings. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification