Membrane-type touch panel
First Claim
Patent Images
1. A membrane-type touch panel, comprising:
- a first circuit layer;
a first circuit pattern provided on said first circuit layer with said first circuit pattern being supported over substantially its entire area by said first circuit layer;
a second circuit layer;
a second circuit pattern provided on said second circuit layer facing said first circuit pattern, said second circuit pattern being supported over substantially its entire area by said second circuit layer;
substantially non-deformable spacer means for normally separating said first and second circuit patterns, said spacer means defining a plurality of void means for permitting a corresponding plurality of regions of said first and second circuit patterns aligned with respective void means to move into electrical engagement with each other upon actuation of said touch panel; and
projection means for applying an inwardly directed and localized force upon the outer surface of at least one of said first and second circuit layers upon initiation of an actuation force on said touch panel, said projection means being aligned with corresponding void means defined by said spacer means.
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Abstract
In a membrane-type touch panel including a pair of circuit layers having facing conductive circuit patterns normally separated by spacers defining voids through which regions of the circuit patterns can move to effect actuation, a series of projections are provided which, upon actuation, are adapted to act inwardly upon the outer surface of at least one of the two circuit layers at regions aligned with corresponding voids to reduce the required actuation force or to allow a reduction in the size of the spacer voids to reduce the possibility of false actuations.
80 Citations
9 Claims
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1. A membrane-type touch panel, comprising:
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a first circuit layer; a first circuit pattern provided on said first circuit layer with said first circuit pattern being supported over substantially its entire area by said first circuit layer; a second circuit layer; a second circuit pattern provided on said second circuit layer facing said first circuit pattern, said second circuit pattern being supported over substantially its entire area by said second circuit layer; substantially non-deformable spacer means for normally separating said first and second circuit patterns, said spacer means defining a plurality of void means for permitting a corresponding plurality of regions of said first and second circuit patterns aligned with respective void means to move into electrical engagement with each other upon actuation of said touch panel; and projection means for applying an inwardly directed and localized force upon the outer surface of at least one of said first and second circuit layers upon initiation of an actuation force on said touch panel, said projection means being aligned with corresponding void means defined by said spacer means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification