Touch sensor and display device
First Claim
Patent Images
1. A touch sensor, comprising:
- one or more drive electrodes;
one or more detection electrodes forming capacitance in cooperation with the respective drive electrodes;
a detection circuit applying drive signals to the respective drive electrodes to detect an object based on detection signals obtained from the respective detection electrodes in response to the respective drive signals; and
a controller controlling to change a range of electric flux lines generated between the drive electrodes and the detection electrodes, wherein the controller controls to change a maximum range of the electric lines of force in accordance with a detection result by the detection circuit and the drive electrodes are a plurality of drive electrode patterns extending along a first direction, andthe detection electrodes are a plurality of detection electrode patterns extending along a second direction perpendicular to the first direction such that the drive electrodes and the detection electrodes intersect; and
wherein the controller operates to control a change in a maximum range of reach for the electric lines of force in accordance with a detection result from the detection circuit.
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Abstract
A touch sensor that may detect an object away from the sensor is provided. The touch sensor includes one or more drive electrodes; one or more detection electrodes forming capacitance in cooperation with the respective drive electrodes; a detection circuit applying drive signals to the respective drive electrodes to detect the object based on detection signals obtained from the respective detection electrodes in response to the respective drive signals; and a controller controlling to change a range of electric flux lines generated between the drive electrodes and the detection electrodes.
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Citations
21 Claims
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1. A touch sensor, comprising:
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one or more drive electrodes; one or more detection electrodes forming capacitance in cooperation with the respective drive electrodes; a detection circuit applying drive signals to the respective drive electrodes to detect an object based on detection signals obtained from the respective detection electrodes in response to the respective drive signals; and a controller controlling to change a range of electric flux lines generated between the drive electrodes and the detection electrodes, wherein the controller controls to change a maximum range of the electric lines of force in accordance with a detection result by the detection circuit and the drive electrodes are a plurality of drive electrode patterns extending along a first direction, and the detection electrodes are a plurality of detection electrode patterns extending along a second direction perpendicular to the first direction such that the drive electrodes and the detection electrodes intersect; and
wherein the controller operates to control a change in a maximum range of reach for the electric lines of force in accordance with a detection result from the detection circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 19)
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12. A display unit comprising:
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a plurality of display pixel electrodes; one or more common electrodes provided to face the display pixel electrodes; a display layer; a display control circuit controlling image display performance of the display layer through applying an image-signal-based-voltage between the display pixel electrodes and the common electrodes; one or more sensor-purpose drive electrodes; one or more sensor-purpose detection electrodes forming capacitance in cooperation with the respective sensor-purpose drive electrodes at intersections between the detection electrodes and the drive electrodes; a detection circuit applying sensor-purpose drive signals to the respective sensor-purpose drive electrodes to detect an object based on detection signals obtained from the respective sensor-purpose detection electrodes in response to the respective sensor-purpose drive signals; and a controller controlling to change a range of electric flux lines generated between the sensor-purpose drive electrodes and the sensor-purpose detection electrodes; and
further wherein the drive electrodes face the pixel electrodes and the detection electrodes face the drive electrodes and touch is detected by sensing a change in capacitance at the intersections of the drive electrodes and detection electrodes; and
wherein the controller operates to control a change in a maximum range of reach for the electric lines of force in accordance with a detection result from the detection circuit. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A display unit comprising:
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a plurality of display pixel electrodes; one or more common electrodes; a display layer, a display control circuit controlling image display performance of the display layer through applying an image-signal-based-voltage between the display pixel electrodes and the common electrodes; one or more sensor-purpose drive electrodes; one or more sensor-purpose detection electrodes forming capacitance in cooperation with the respective sensor-purpose drive electrodes at intersections between the detection electrodes and the drive electrodes; and a detection circuit applying sensor-purpose drive signals to the respective sensor-purpose drive electrodes to detect an object based on detection signals obtained from the respective sensor-purpose detection electrodes in response to the respective sensor-purpose drive signals;
whereinthe common electrodes also serve as the sensor-purpose drive electrodes, and the common electrodes are supplied with the sensor-purpose drive signal having a voltage larger than a voltage of the display-purpose common drive signal; and
further wherein the drive electrodes face the pixel electrodes and the detection electrodes face the drive electrodes and touch is detected by sensing a change in capacitance at the intersections of the drive electrodes and detection electrodes; and
a controller operating to change a range of reach for electric lines of force generated between the drive electrodes and the detection electrodes; and
wherein the controller operates to control a change in a maximum range of reach for the electric lines of force in accordance with a detection result from the detection circuit.
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20. A touch sensor comprising:
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one or more drive electrodes; one or more detection electrodes forming capacitance in cooperation with the respective drive electrodes at intersections of the detection electrodes and drive electrodes; a detection circuit applying drive signals to the respective drive electrodes to detect an object based on detection signals obtained from the respective detection electrodes in response to the respective drive signals; and a controller operating to change a range of reach for electric lines of force generated between the drive electrodes and the detection electrodes; and
wherein the controller operates to control a change in a maximum range of reach for the electric lines of force in accordance with a detection result from the detection circuit. - View Dependent Claims (21)
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Specification