TOUCH PANEL HAVING CLOSED LOOP ELECTRODE FOR EQUIPOTENTIAL BUILD-UP AND MANUFACTURING METHOD THEREOF
First Claim
1. A touch panel for a touch screen, comprising:
- a transparent conductive film and an equipotential forming electrode on a transparent substrate,wherein the equipotential forming electrode is formed before or after the transparent conductive film is coated on the transparent substrate, and the equipotential forming electrode comprises a closed-loop electrode that is formed to overlap the transparent conductive film along an edge of an equipotential forming region of the transparent substrate.
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Accused Products
Abstract
A touch panel for a 5-line touch screen or a capacitive touch screen, and a manufacturing method thereof are provided. More particularly, a touch panel in which an equipotential forming electrode may be formed in a simple closed-loop pattern in order to reduce a screen dead zone and expand an active region by eliminating the linearity distortion of equipotential lines in around the equipotential forming electrode of the touch panel, and also may be applicable to a touch screen of a small device such as a mobile phone, and may reduce a process error rate and improve a productivity and electrical requirements such as terminal resistance and the like, and a manufacturing method thereof are provided. The equipotential forming electrode may be patterned using a much more conductive material than a material of a transparent conductive film. The equipotential forming electrode may form a closed loop in a linear pattern, a square-zigzagged pattern, a triangular saw pattern, or a wave pattern. The thickness, the width, and the electrical conductivity of the pattern may be adjusted so that resistance between signal connection terminals may be greater than some ohms. An auxiliary electrode may be further provided to improve the potential characteristic of the electrode formed in the closed loop.
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Citations
25 Claims
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1. A touch panel for a touch screen, comprising:
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a transparent conductive film and an equipotential forming electrode on a transparent substrate, wherein the equipotential forming electrode is formed before or after the transparent conductive film is coated on the transparent substrate, and the equipotential forming electrode comprises a closed-loop electrode that is formed to overlap the transparent conductive film along an edge of an equipotential forming region of the transparent substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A touch panel for a touch screen, comprising:
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a transparent conductive film and an equipotential forming electrode on a transparent substrate, wherein the equipotential forming electrode is formed before or after the transparent conductive film is coated on the transparent substrate, and the equipotential forming electrode comprises a closed-loop electrode that is formed to overlap the transparent conductive film along an edge of an equipotential forming region of the transparent substrate, and the closed-loop electrode is formed in a pattern with a constant width from the edge of the transparent substrate by forming a predetermined conductive thin film on the entire surface of the transparent substrate and eliminating a region excluding a portion corresponding to the closed-loop electrode.
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9. A touch panel for a touch screen, comprising:
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an equipotential forming electrode on a transparent substrate, wherein the equipotential forming electrode is formed in a closed-loop electrode along an edge of an equipotential forming region of the transparent substrate and comprises a plurality of signal connection terminals, and the closed-loop electrode is formed by forming a predetermined conductive thin film on the entire surface of the transparent substrate and then eliminating a plurality of patterns in a predetermined shape in an inner region of the transparent substrate that is spaced apart from the edge by a predetermined distance.
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10. A touch panel comprising:
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a transparent substrate; a transparent conductive film being coated on a predetermined layer disposed on the transparent substrate; and an equipotential forming electrode being formed before or after the transparent conductive film is coated on the transparent substrate, to overlap the transparent electrode film along an edge of an equipotential forming region of the transparent substrate, wherein the equipotential forming electrode comprises; four signal connection terminals being located in corners, respectively; horizontal patterns being formed in two horizontal sides, respectively, between the respective two signal connection terminals; and vertical patterns being formed in two vertical sides, respectively, between the respective two signal connection terminals, wherein the equipotential forming electrode is formed in a single closed-loop and when predetermined signals are applied to the signal connection terminals, an equipotential is formed between the facing horizontal patterns or between the facing vertical patterns.
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11. A method of manufacturing a touch panel for a touch screen, comprising:
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coating a transparent conductive film on a transparent substrate; and forming a closed-loop electrode for forming an equipotential before or after the transparent conductive film is coated on the transparent substrate, wherein the closed-loop electrode is formed to overlap the transparent conductive film along an edge of an equipotential forming region of the transparent substrate. - View Dependent Claims (12)
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13. A touch panel for a touch screen, comprising:
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a transparent conductive film and an equipotential forming electrode on a transparent substrate, wherein the equipotential forming electrode comprises a closed-loop electrode in which a resistance value for each unit length changes with respect to the horizontal direction or the vertical direction between a plurality of signal connection terminals. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of manufacturing a touch panel for a touch screen, comprising:
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coating a transparent conductive film on a transparent substrate; and forming a closed-loop electrode for forming an equipotential in which a resistance value for each unit length changes with respect to the horizontal direction or the vertical direction between a plurality of signal connection terminals.
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Specification