Pressure sensitive conductive sheet and panel switch using same
AssigneePanasonic Corporation
InventorsKoji Tanabe, Hirotoshi Watanabe
Life of this patent
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Abstract
A first resistor layer is formed on the lower surface of a base in film form, and at the same time, a second resistor layer in which particles of different particle diameters are dispersed is formed and layered on the lower surface of the first resistor layer, and thus, a pressure sensitive conductive sheet is formed. In this configuration, the second resistor layer in uneven form makes contact with the fixed contacts in accordance with a pressing force so that electrical connection is made via the second resistor layer and the first resistor layer, and therefore, a thin panel switch with little fluctuation in the resistance value resulting from repeated operation where a stable resistance value can be gained can be realized.
Claims2
A pressure sensitive conductive sheet, comprising:
- a base in film form;
- a first resistor layer formed on a lower surface of the base;
- and
- a second resistor layer formed and layered on a lower surface of the first resistor layer, wherein
- particles of different particle diameters are dispersed inside the second resistor layer.
Dependencies are inferred from the claim text.