Electrode arrangement for display device
First Claim
1. An electrode arrangement for a capacitive sensor for detecting a position or an approach of an object, the electrode arrangement comprising a substantially flat substrate having a first side and a second side;
- a sensor electrode arranged on the first side of the substantially flat substrate, wherein the sensor electrode is configured to sense changes of an irradiated alternating electric field, wherein the changes are caused by an object entering the alternating electric field, and a first shield electrode arranged on the second side of the substrate and serving for shielding the alternating electric field emitted by the sensor electrode from ground.
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Accused Products
Abstract
The invention provides an electrode arrangement for a capacitive sensor device and for a capacitive sensor, respectively, for detecting a position and/or an approach of an object, which comprises a sensor electrode and a first shield electrode, wherein the sensor electrode is arranged on a first side of a substantially flat substrate with a first side and a second side, and wherein the first shield electrode is arranged on the second side of the substrate and serves for shielding the alternating electric field emitted by the sensor electrode from ground. There is also provided a foil with an electrode arrangement according to the invention as well as a method for the production of a display arrangement with an electrode arrangement according to the invention.
28 Citations
33 Claims
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1. An electrode arrangement for a capacitive sensor for detecting a position or an approach of an object, the electrode arrangement comprising a substantially flat substrate having a first side and a second side;
- a sensor electrode arranged on the first side of the substantially flat substrate, wherein the sensor electrode is configured to sense changes of an irradiated alternating electric field, wherein the changes are caused by an object entering the alternating electric field, and a first shield electrode arranged on the second side of the substrate and serving for shielding the alternating electric field emitted by the sensor electrode from ground.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system comprising:
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an electrode arrangement for a capacitive sensor for detecting a position or an approach of an object, the electrode arrangement comprising a substantially flat substrate having a first side and a second side;
a sensor electrode arranged on the first side of the substantially flat substrate, wherein the sensor electrode is configured to sense changes of an irradiated alternating electric field, wherein the changes are caused by an object entering the alternating electric field, and a first shield electrode arranged on the second side of the substrate and serving for shielding the alternating electric field emitted by the sensor electrode from ground,a grounded display device for detecting a position or an approach of an object to the display device, the electrode arrangement being in the display device in such a way that the second side of the substrate is directed toward the display device, and the first shield electrode serves to shield the alternating electric field emitted by the sensor electrode from the grounded display device. - View Dependent Claims (19, 20)
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21. An apparatus comprising:
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an electrode arrangement for a capacitive sensor for detecting a position or an approach of an object, the electrode arrangement comprising a substantially flat substrate having a first side and a second side;
a sensor electrode arranged on the first side of the substantially flat substrate, wherein the sensor electrode is configured to sense changes of an irradiated alternating electric field, wherein the changes are caused by an object entering the alternating electric field, and a first shield electrode arranged on the second side of the substrate and serving for shielding, the alternating electric field emitted by the sensor electrode from around,a grounded display device for detecting a position or an approach of an object to the display device, the electrode arrangement being in the display device in such a way that the second side of the substrate is directed toward the display device, and the first shield electrode serves to shield the alternating electric field emitted by the sensor electrode from the grounded display device, wherein the first shield electrode is embedded in a transparent protective material in the display device, and the first shield electrode serves to shield the electrode field of the sensor electrode from the grounded display device. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An electrode arrangement comprising a foil on which a plurality of sensor electrodes and at least one coupling electrode are arranged;
- wherein the plurality of sensor electrodes are arranged on the side of the coupling electrode and in a predetermined spacing from the coupling electrode, wherein the foil comprises connectors for connecting the sensor electrodes to an evaluation unit and for connecting the sensor electrodes and the coupling electrode to a driver circuit for the production of a substantially field-free space between the sensor electrodes and the coupling electrode, wherein the sensor electrode is configured to sense changes of an irradiated alternating electric field, wherein the changes are caused by an object entering the alternating electric field.
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32. A method for making an approach-sensitive display device with a touch-sensitive screen comprising conductive structures for detecting a contact, comprising the steps of:
- providing a foil on which a plurality of sensor electrodes and at least one coupling electrode are arranged;
wherein the plurality of sensor electrodes are arranged on the side of the coupling electrode and in a predetermined spacing from the coupling electrode, wherein the foil comprises connectors for connecting the sensor electrodes to an evaluation unit and for connecting the sensor electrodes and the coupling electrode to a driver circuit, for the production of a substantially field-free space between the sensor electrodes and the coupling electrode, wherein the sensor electrode is configured to sense changes of an irradiated alternating electric field, wherein the changes are caused by an object entering the alternating electric field;
applying the foil on the touch-sensitive screen with the coupling electrode directed toward the screen and the coupling electrode into a capacitive coupling with the conductive structures of the touch-sensitive screen. - View Dependent Claims (33)
- providing a foil on which a plurality of sensor electrodes and at least one coupling electrode are arranged;
Specification