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US 2012/0256865 A1Published application
Touch panel and portable device using the same
AssigneeNissha Printing Co., Ltd.
InventorsTakao Hashimoto, Kazuhiro Nishikawa, Yoshihiro Kai, Yuichiro Takai, Yuko Endo, Ryomei Omote
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Abstract
A gap between an upper transparent electrode base member (1) and a lower transparent electrode base member (2) is filled with a transparent adhesive layer (3) as a pressure-sensitive adhesive layer, to eliminate an air layer.
Claims9
A touch panel, comprising:
- an upper transparent electrode base member that has an upper transparent electrode on its one surface;
- a lower transparent electrode base member that has a lower transparent electrode on its surface facing the surface where the upper transparent electrode is disposed;
- and
- an insulating transparent adhesive layer that is disposed between the upper transparent electrode and the lower transparent electrode, and that includes a plurality of pressure-sensitive particles dispersed therein, wherein
- when a force acts upon other surface of the upper transparent electrode base member, the acting force causes a current to flow among the pressure-sensitive particles in the transparent adhesive layer, whereby an electrical conduction is established between the upper transparent electrode and the lower transparent electrode, and positional coordinates where the force acted upon along the other surface of the upper transparent electrode base member are detected.
2 more elements
Dependencies are inferred from the claim text.