Capacitance touch panel
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United States of America Patent
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May 9, 2017
Issued Date -
N/A
app pub date -
Aug 17, 2015
filing date -
Mar 13, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A capacitance touch panel of the invention includes a display, a lower adhesive layer, a capacitance touch panel sensor, an upper adhesive layer and a protective substrate, which are formed in this order. Relative permittivity A in the upper adhesive layer and relative permittivity B in the lower adhesive layer satisfy expression (1): [relative permittivity A≧relative permittivity B . . . (1)] at respective temperatures set in increments of 20° C. from −40° C. to 80° C., and a temperature dependency of the relative permittivity B in the lower adhesive layer as determined by a temperature dependency evaluation test is up to 30%.
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