KEYBOARD SWITCH

摘要

A foil-type switching element with at least three switching states comprises an electrode arrangement comprising at least a first electrode pattern and a second electrode pattern, said first and second electrode patterns being arranged in said active area on first and second carrier foils such that an electrical contact is established between said first and second electrode pattern when said first and second carrier foils are brought together. The electrode arrangement is configured such that, within said active area, at least one primary contact zone and at least one secondary contact zone are formed in which an electrical contact can be established between said first and second electrode pattern, wherein said primary contact zone is centrally located within said active area and wherein said at least one secondary contact zone is located off-centre within said active zone. Moreover at least one first resistive element is associated to one of said first or second electrode pattern in such a way that said at least one first resistive element is connected between the first and second connection terminals if said an electrical contact between said first and second electrode pattern is established only in said primary contact zone and that said first electrical resistance is bypassed if an electrical contact between said first and second electrode pattern is also established in said secondary contact zone.