Touch sensitive display device
First Claim
1. A touch sensor, comprising:
- a display device having at least one substrate on which at least one display electrode is disposed for the display of a shape on the display device;
an interface (21) coupled to the at least one display electrode (11) for receiving display data to the display device;
a measuring circuit coupled to the at least one display electrode; and
switching means for connecting the interface to the at least one display electrode when the switching means is in a first state of operation and for connecting the measuring circuit to the at least one display electrode when the switching means in is a second state of operation.
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Accused Products
Abstract
A touch sensor is disclosed comprising a display device having a substrate on which substrate at least one display electrode is disposed for the display of a shape on the display device. An interface is coupled to the at least one display electrode for receiving display data to the display device. Moreover is a measuring circuit coupled to the at least one display electrode. Switching means are provided for connecting the interface to the at least one display electrode when the switching means is in a first state of operation and connecting the measuring circuit to the at least one display electrode when the switching means is in a second state of operation.
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Citations
17 Claims
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1. A touch sensor, comprising:
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a display device having at least one substrate on which at least one display electrode is disposed for the display of a shape on the display device;
an interface (21) coupled to the at least one display electrode (11) for receiving display data to the display device;
a measuring circuit coupled to the at least one display electrode; and
switching means for connecting the interface to the at least one display electrode when the switching means is in a first state of operation and for connecting the measuring circuit to the at least one display electrode when the switching means in is a second state of operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 15, 16, 17)
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9. A method for detecting a touch on a display device, said display device having a substrate on which at least one display electrode is disposed, wherein said display electrode is coupled to an interface for receiving display data to the display device, comprising the steps of:
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disconnecting the at least one display electrode from the interface;
connecting said display electrode to a measuring circuit; and
detecting a change in an electrical property of the display electrode due to an electrical coupling with an object touching the display device in the vicinity of the display electrode. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification