METHOD OF DETECTING TOUCH POSITION, TOUCH POSITION DETECTING APPARATUS FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE TOUCH POSITION DETECTING APPARATUS
First Claim
Patent Images
1. A method of detecting a touch position, the method comprising:
- emitting light;
receiving a plurality of light beams derived from the light, the light beams having different paths from each other, the light beams being partially reflected according to a touch; and
detecting the touch position based on an amount of light in the received light beams.
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Abstract
In a method of detecting a touch position, light is emitted. A plurality of light beams derived from the emitted light is received. The light beams have different paths from each other. The light beams are partially reflected according to a touch. The touch position is detected based on an amount of light in the received light beams. According to the present invention, the touch positions of several touching elements may be individually detected.
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Citations
20 Claims
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1. A method of detecting a touch position, the method comprising:
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emitting light; receiving a plurality of light beams derived from the light, the light beams having different paths from each other, the light beams being partially reflected according to a touch; and detecting the touch position based on an amount of light in the received light beams. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A touch position detecting apparatus comprising:
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a light emitting part emitting light; a light waveguide comprising; a light incident surface disposed adjacent to the light emitting part, the light being incident to the light incident surface; a touch surface touched by a touch; and a light exiting surface opposite to the light incident surface, a plurality of light beams derived from the light exiting the light exiting surface, the light beams having different paths from each other, the light beams being partially reflected according to the touch; a light receiving part adjacent to the light exiting surface and comprising a plurality of light receiving elements respectively receiving the light beams exiting from the light exiting surface; and a detecting part detecting a touch position based on an amount of the light in the light beams received by the light receiving part. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A display apparatus comprising:
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a light emitting part emitting light; a light waveguide comprising; a light incident surface disposed adjacent to the light emitting part, the light being incident to the light incident surface; a touch surface touched by a touch; and a light exiting surface opposite to the light incident surface, a plurality of light beams exiting the light exiting surface, the light beams having different paths from each other, the light beams being partially reflected according to the touch; a light receiving part adjacent to the light exiting surface and comprising a plurality of light receiving elements respectively receiving the light beams exiting from the light exiting surface; and a detecting part detecting a touch position based on an amount of light in the light beams received by the light receiving part; and a display panel disposed under the light waveguide and displaying an image according to the touch position. - View Dependent Claims (17, 18, 19, 20)
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Specification