Touch screen sensor having varying sheet resistance
DCFirst Claim
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1. A touch screen sensor, comprising:
- a visible light transparent substrate; and
an electrically conductive micropattern disposed on or in the visible light transparent substrate, the micropattern comprising an elongated transparent conductive bar with a long axis, the bar comprising a metallic mesh within a touch-sensing area that is visible light transparent and that has at least 90% open area,wherein the micropattern exhibits a periodic sheet resistance along the long axis, andwherein the transparent conductive bar includes a minimum in resistance per unit length along the long axis, and the periodic variation in resistance per unit length along the long axis is characterized by peaks in resistance per unit length that are at least two times the minimum in resistance per unit length.
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Abstract
A touch screen sensor includes a visible light transparent substrate and an electrically conductive micropattern disposed on or in the visible light transparent substrate. The micropattern includes a first region micropattern within a touch sensing area and a second region micropattern. The first region micropattern has a first sheet resistance value in a first direction, is visible light transparent, and has at least 90% open area. The second region micropattern has a second sheet resistance value in the first direction. The first sheet resistance value is different from the second sheet resistance value.
58 Citations
20 Claims
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1. A touch screen sensor, comprising:
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a visible light transparent substrate; and an electrically conductive micropattern disposed on or in the visible light transparent substrate, the micropattern comprising an elongated transparent conductive bar with a long axis, the bar comprising a metallic mesh within a touch-sensing area that is visible light transparent and that has at least 90% open area, wherein the micropattern exhibits a periodic sheet resistance along the long axis, and wherein the transparent conductive bar includes a minimum in resistance per unit length along the long axis, and the periodic variation in resistance per unit length along the long axis is characterized by peaks in resistance per unit length that are at least two times the minimum in resistance per unit length. - View Dependent Claims (2)
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3. A touch screen sensor, comprising:
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a visible light transparent substrate; and an electrically conductive micropattern disposed on or in the visible light transparent substrate, the micropattern comprising a metallic mesh within a touch-sensing area that is visible light transparent and that has at least 90% open area, wherein the mesh comprises traces and a periodic series of breaks in the traces, and wherein the mesh defines an elongated transparent conductive bar with a long axis, the transparent conductive bar includes a minimum in resistance per unit length along the long axis, and the periodic variation in resistance per unit length along the long axis is characterized by peaks in resistance per unit length that are at least two times the minimum in resistance per unit length. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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10. A touch screen sensor, comprising:
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a visible light transparent substrate; an electrically conductive micropattern disposed on or in the visible light transparent substrate, the micropattern comprising a first region micropattern within a touch sensing area and a second region micropattern, wherein each of the first region micropattern and the second region micropattern comprise metal traces having a uniform thickness and composition; the first region micropattern comprising a first mesh having a first sheet resistance value in a first direction, being visible light transparent, and having at least 90% open area; and the second region micropattern comprising a second mesh different from the first mesh, and having a second sheet resistance value in the first direction. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification