Touch screen panel and detecting method of touch position using the same
First Claim
1. A touch screen panel comprising:
- a wave guide;
a first transmitter disposed at a first end of the wave guide and which outputs one of an ultrasonic wave and a light wave into the wave guide;
a second transmitter disposed at a second end of the wave guide and which outputs the one of the ultrasonic wave and the light wave into the wave guide;
a first receiver disposed at the first end of the wave guide and which receives the one of the ultrasonic wave and the light wave from the second transmitter and generates a first receipt signal;
a second receiver disposed at the second end of the wave guide and which receives the one of the ultrasonic wave and the light wave from the first transmitter and generates a second receipt signal; and
a controller connected to the first receiver and the second receiver and which detects a touch position on the wave guide using a time difference between a first time point at which the first receipt signal is varied and a second time point at which the second receipt signal is varied.
1 Assignment
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Accused Products
Abstract
A touch screen panel includes: a wave guide; a first transmitter at a first end of the wave guide to output an ultrasonic or light wave into the wave guide; a second transmitter at a second end of the wave guide to output the ultrasonic or light wave into the wave guide; a first receiver at the first end to receive the ultrasonic or light wave from the second transmitter and generate a first receipt signal; a second receiver at the second end to receive the ultrasonic or light wave and generate a second receipt signal; and a controller connected to the first receiver and the second receiver to detect a touch position on the wave guide using a time difference between a time point at which the first receipt signal is varied and a time point at which the second receipt signal is varied.
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Citations
20 Claims
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1. A touch screen panel comprising:
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a wave guide; a first transmitter disposed at a first end of the wave guide and which outputs one of an ultrasonic wave and a light wave into the wave guide; a second transmitter disposed at a second end of the wave guide and which outputs the one of the ultrasonic wave and the light wave into the wave guide; a first receiver disposed at the first end of the wave guide and which receives the one of the ultrasonic wave and the light wave from the second transmitter and generates a first receipt signal; a second receiver disposed at the second end of the wave guide and which receives the one of the ultrasonic wave and the light wave from the first transmitter and generates a second receipt signal; and a controller connected to the first receiver and the second receiver and which detects a touch position on the wave guide using a time difference between a first time point at which the first receipt signal is varied and a second time point at which the second receipt signal is varied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of detecting a touch position on a touch screen panel, the method comprising:
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receiving a first ultrasonic wave transferred from a first end of a wave guide of the touch screen panel to a second end of the wave guide; receiving a second ultrasonic wave transferred from the second end of the wave guide to the first end of the wave guide; generating a first receipt signal based on the first ultrasonic wave; generating a second receipt signal based on the second ultrasonic wave; and detecting a touch position on the wave guide using a time difference between a first time point at which the first receipt signal is varied and a second time point at which the second receipt signal is varied. - View Dependent Claims (18, 19, 20)
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Specification