Systems for displaying images
First Claim
1. A system for displaying images, comprising:
- a touch sensing circuit comprising a voltage storage unit for detecting whether a touch event has occurred and generating a corresponding voltage, wherein the voltage storage unit comprises;
a first capacitor having a first terminal coupled to a ground terminal and a second terminal coupled to a first node;
a second capacitor having a first terminal coupled to the ground terminal and a second terminal coupled to a second node, wherein when the voltage storage unit detects whether a touch event has occurred, and the second node is coupled to an alternating current (AC) voltage;
a third capacitor formed between the first and second nodes, wherein when the touch event has occurred, a value of the third capacitor is changed, so that the corresponding voltage at the first node is changed;
a first switch element having a first terminal coupled to the first node and a second terminal coupled to the second node; and
a second switch element having a first terminal coupled to the first node and a second terminal.
3 Assignments
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Accused Products
Abstract
A system for displaying images includes a touch sensing circuit. The touch sensing circuit comprises a voltage storage unit for detecting whether a touch event has occurred and generates a corresponding voltage. The voltage storage unit comprises first to third capacitors. The first capacitor has a first terminal coupled to a ground terminal and a second terminal coupled to a first node. The second capacitor has a first terminal coupled to the ground terminal and a second terminal coupled to a second node. When the voltage storage unit detects that a touch event has occurred, the second node is coupled to an AC voltage. The third capacitor is formed between the first and second nodes. When the touch event has occurred, a value of the third capacitor is changed, so that the corresponding voltage at the first node is changed.
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Citations
20 Claims
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1. A system for displaying images, comprising:
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a touch sensing circuit comprising a voltage storage unit for detecting whether a touch event has occurred and generating a corresponding voltage, wherein the voltage storage unit comprises; a first capacitor having a first terminal coupled to a ground terminal and a second terminal coupled to a first node; a second capacitor having a first terminal coupled to the ground terminal and a second terminal coupled to a second node, wherein when the voltage storage unit detects whether a touch event has occurred, and the second node is coupled to an alternating current (AC) voltage; a third capacitor formed between the first and second nodes, wherein when the touch event has occurred, a value of the third capacitor is changed, so that the corresponding voltage at the first node is changed; a first switch element having a first terminal coupled to the first node and a second terminal coupled to the second node; and a second switch element having a first terminal coupled to the first node and a second terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for displaying images, comprising:
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a plurality of first lines; a plurality of second lines interlaced with the first lines; and a touch sensing circuit comprising a voltage storage unit for detecting whether a touch event has occurred and generating a corresponding voltage, wherein the voltage storage unit comprises; a plurality of sensing cells disposed in a sensing array, wherein each of the sensing cells correspond to the interlaced first line and second line and comprises; a first capacitor formed between the corresponding first line and the corresponding second line, wherein when the touch event has occurred in the corresponding sensing cell, a value of the first capacitor is changed; and a first switch element having a first terminal coupled to the corresponding first line and a second terminal coupled to the corresponding second line; a plurality of second capacitors respectively coupled to the first lines, each having a first terminal coupled to a ground terminal and a second terminal coupled to the corresponding first line; a plurality of third capacitors respectively coupled to the second lines, each having a first terminal coupled to the ground terminal and a second terminal coupled to the corresponding second line; a plurality of second switch elements respectively coupled to the first lines, each having a first terminal coupled to the corresponding first line and a second terminal; and a plurality of switch units respectively coupled to the second lines, wherein when the voltage storage unit detects whether a touch event has occurred, the switch units are turned on sequentially in a first pre-determined order for providing an alternating current (AC) voltage to the second lines. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification