Key switch sheet and key switch module

Details Key switch sheet and key switch module Key switch sheet and key switch module

2011-04-12

2011-04-12

Leon, Edwin A. (Department: 2833)

Electricity: circuit makers and breakers

Solid contact

Membrane type

Reexamination Certificate

active

07923653

ABSTRACT:
A key switch sheet has a pressure sensitive adhesive layer for holding a contact spring by adhering to an apex portion of a dome-shaped contact spring at a back surface of a base material sheet. A thickness of the pressure sensitive adhesive layer at a region to be made to adhere to the apex portion of the contact spring is thicker than a thickness of the pressure sensitive adhesive layer at a peripheral region and thicker than or equal to a thickness of the pressure sensitive adhesive layer at a region where the base material sheet is made to adhere to a substrate.

REFERENCES:
patent: 6593537 (2003-07-01), Teruyama et al.
patent: 6595653 (2003-07-01), Saito et al.
patent: 7399937 (2008-07-01), Nishimura
patent: 2004-055389 (2004-02-01), None
patent: 2007-287347 (2007-11-01), None

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