Touch and hover sensing with conductive polarizer
First Claim
1. A touch sensitive display device, comprising:
- a display;
a transparent electrode layer comprising a plurality of transparent electrodes;
a conductive polarizer coupled to the transparent electrode layer via a dielectric layer;
a touch sensing driver circuit electrically connected to one of the transparent electrode layer and the conductive polarizer;
a touch sensing receiver circuit electrically connected to another of the transparent electrode layer and the conductive polarizer; and
an anisotropic conductive film material electrically connecting the conductive polarizer to one of the touch sensing driver circuit and the touch sensing receiver circuit via a flexible printed circuit board, the flexible printed circuit board having contacts each defining a respective electrode region via the anisotropic conductive film material, such that each contact is electrically connected to a respective plurality of conductive polarizing elements of the conductive polarizer via the anisotropic conductive film material.
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Accused Products
Abstract
Embodiments are disclosed that relate to touch and proximity sensing with a touch sensor that utilizes a conductive polarizer as a touch sensor electrode. For example, one disclosed embodiment provides a touch sensitive display device including a display having a transparent electrode layer including a plurality of transparent electrodes, a conductive polarizer coupled to the transparent electrode layer via a dielectric layer, a touch sensing driver circuit electrically connected to one of the transparent electrode layer and the conductive polarizer, and a touch sensing receiver circuit electrically connected to another of the transparent electrode layer and the conductive polarizer.
21 Citations
12 Claims
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1. A touch sensitive display device, comprising:
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a display; a transparent electrode layer comprising a plurality of transparent electrodes; a conductive polarizer coupled to the transparent electrode layer via a dielectric layer; a touch sensing driver circuit electrically connected to one of the transparent electrode layer and the conductive polarizer; a touch sensing receiver circuit electrically connected to another of the transparent electrode layer and the conductive polarizer; and an anisotropic conductive film material electrically connecting the conductive polarizer to one of the touch sensing driver circuit and the touch sensing receiver circuit via a flexible printed circuit board, the flexible printed circuit board having contacts each defining a respective electrode region via the anisotropic conductive film material, such that each contact is electrically connected to a respective plurality of conductive polarizing elements of the conductive polarizer via the anisotropic conductive film material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A touch sensitive display device, comprising:
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a touch surface; a display comprising a thin film transistor layer and a color filter structure comprising a color filter layer and a color filter support layer; a wire grid polarizer coupled to the color filter support structure; a touch sensing driver circuit electrically connected to one of the thin film transistor layer and the conductive polarizer; a touch sensing receiver circuit electrically connected to another of the thin film transistor layer and the conductive polarizer; and an anisotropic conductive film material electrically connecting the conductive polarizer to one of the touch sensing driver circuit and the touch sensing receiver circuit via a flexible printed circuit board, the flexible printed circuit board having contacts each defining an electrode region, such that each contact is electrically connected to a respective plurality of conductive polarizing elements of the conductive polarizer via the anisotropic conductive film material. - View Dependent Claims (11, 12)
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Specification