TOUCH PANEL DEVICE AND METHOD FOR MANUFACTURING THE SAME, AND DISPLAY DEVICE
First Claim
1. A touch panel device comprising:
- a touch area configured to detect a position or positions of a touch or touches made by a touching object;
a plurality of touch position detection electrodes provided in the touch area; and
a detection circuit configured to detect the touch position or positions based on a capacitance or capacitances formed between the touch position detection electrodes and the touching object,whereinthe plurality of touch position detection electrodes include a first electrode and second electrodes formed along a curved substrate surface,the first electrode has a center portion provided at a center of the touch area, and a plurality of tip portions radially extending from the center portion to reach a periphery of the touch area, andthe second electrodes are located in a region including the periphery of the touch area, and one of the second electrodes is located between each adjacent pair of the tip portions.
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Accused Products
Abstract
A touch panel device includes a plurality of touch position detection electrodes provided in a touch area, and a detection circuit configured to detect a touch position or positions based on a capacitance or capacitances formed between the touch position detection electrodes and a touching object. The touch position detection electrodes include a first electrode and second electrodes formed along a curved substrate surface. The first electrode has a center portion provided at a center of the touch area, and a plurality of tip portions radially extending from the center portion to reach a periphery of the touch area. The second electrodes are located in a region including the periphery of the touch area, and one of the second electrodes is located between each adjacent pair of the tip portions.
39 Citations
19 Claims
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1. A touch panel device comprising:
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a touch area configured to detect a position or positions of a touch or touches made by a touching object; a plurality of touch position detection electrodes provided in the touch area; and a detection circuit configured to detect the touch position or positions based on a capacitance or capacitances formed between the touch position detection electrodes and the touching object, wherein the plurality of touch position detection electrodes include a first electrode and second electrodes formed along a curved substrate surface, the first electrode has a center portion provided at a center of the touch area, and a plurality of tip portions radially extending from the center portion to reach a periphery of the touch area, and the second electrodes are located in a region including the periphery of the touch area, and one of the second electrodes is located between each adjacent pair of the tip portions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 17, 18)
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13. A touch panel device comprising:
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a touch area configured to detect a position or positions of a touch or touches made by a touching object; a plurality of touch position detection electrodes provided in the touch area; and a detection circuit configured to detect the touch position or positions based on a capacitance or capacitances formed between the touch position detection electrodes and the touching object, wherein the plurality of touch position detection electrodes include a plurality of first electrodes and a plurality of second electrodes formed along a curved substrate surface, the plurality of first electrodes are provided at a center of the substrate surface, and the set of the plurality of first electrodes as a whole is formed in the shape of a circle, the plurality of second electrodes are provided outside the first electrodes, and the set of the plurality of second electrodes as a whole is formed in the shape of a ring, and the detection circuit is configured to detect at least one of a distance and an azimuth of the touch position from a center of the rotational symmetry, and the touch position which is moved on the first and second electrodes in a diameter direction of the touch area as viewed from above. - View Dependent Claims (14, 15, 16)
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19. A method for manufacturing a touch panel device including a touch area configured to detect a position or positions of a touch or touches made by a touching object, a plurality of touch position detection electrodes provided in the touch area, and a detection circuit configured to detect the touch position or positions based on a capacitance or capacitances formed between the touch position detection electrodes and the touching object, the method comprising the steps of:
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forming a substrate having a curved surface; and forming a transparent conductive film having a predetermined shape along the curved surface of the substrate to form a first electrode and second electrodes, wherein in the step of forming the first and second electrodes, the first electrode is formed to have a center portion provided at a center of the touch area, and a plurality of tip portions radially extending from the center portion to reach a periphery of the touch area, and the second electrodes are located in a region including the periphery of the touch area, and one of the second electrodes is located between each adjacent pair of the tip portions.
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Specification