SELF-ADJUSTING PHOTOSENSIVE TOUCH CIRCUIT AND DISPLAY DEVICE THEREOF
First Claim
1. A self-adjusting photosensitive touch circuit comprising:
- a light-sensing component, for sensing a touch status, and receiving a first control signal, wherein the light-sensing component is enabled by a level of the first control signal;
a variable capacitor, electrically coupled to the light-sensing component, wherein a capacitance of the variable capacitor is altered along with a voltage difference between two terminals of the variable capacitor; and
a switch component, electrically coupled to the variable capacitor, and configured for receiving a second control signal, wherein the switch component is enabled by a level of the second control signal.
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Accused Products
Abstract
The present invention relates to a self-adjusting photosensitive touch circuit, which includes a light-sensing component, a variable capacitor and a switch component. The light-sensing component is for sensing a touch status and receives a first control signal. The light-sensing component is enabled by a level of the first control signal. The variable capacitor is electrically coupled to the light-sensing component. A capacitance of the variable capacitor is altered along with a voltage difference between two terminals of the variable capacitor. The switch component is electrically coupled to the variable capacitor, and receives a second control signal. The switch component is enabled by a level of the second control signal. Therefore, a range of the gate voltage difference of the light-sensing component can be increased, so as to improve the sensitivity and accuracy of the light-sensing component. Moreover, the present invention also relates to a display device thereof.
11 Citations
14 Claims
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1. A self-adjusting photosensitive touch circuit comprising:
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a light-sensing component, for sensing a touch status, and receiving a first control signal, wherein the light-sensing component is enabled by a level of the first control signal; a variable capacitor, electrically coupled to the light-sensing component, wherein a capacitance of the variable capacitor is altered along with a voltage difference between two terminals of the variable capacitor; and a switch component, electrically coupled to the variable capacitor, and configured for receiving a second control signal, wherein the switch component is enabled by a level of the second control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A self-adjusting photosensitive touch display device, comprising:
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at least one scanning line; at least one data line; a plurality of display pixel units, electrically coupled to the scanning line and the data line, respectively; and at least one self-adjusting photosensitive touch circuit, comprising; a light-sensing component, for sensing a touch status, and receiving a first control signal, wherein the light-sensing component is enabled by a level of the first control signal; a variable capacitor, electrically coupled to the light-sensing component, wherein a capacitance of the variable capacitor is altered along with a voltage difference between two terminals of the variable capacitor; and a switch component, electrically coupled to the variable capacitor, and configured for receiving a second control signal, wherein the switch component is enabled by a level of the second control signal. - View Dependent Claims (13, 14)
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Specification