Patent ID: 6844508

Claim:
A key pattern connecting device for a domed metal switch, said domed metal switch including a plurality of first and second contact parts arranged in a key matrix on a main board, said first contact parts being electrically connected to rows provided on a key input controller by means of a plurality of main connection patterns, respectively, said second contact parts, which are disposed within said first contact parts, respectively, being electrically connected to columns provided on said key input controller by means of another plurality of main connection patterns; said key pattern connecting device comprising: at least one of said first contact parts electrically connected to one of said columns, not rows, by means of said main connection patterns on said main board; at least one of said second contact parts electrically connected to one of said rows, not columns, by means of said main connection patterns on said main board; a plurality of domed metal keys provided on the surfaces of said contact parts; and a flexible circuit attached to said main board in such a manner that said domed metal keys project through said flexible circuit, said flexible circuit having a plurality of connection patterns formed thereon in such a manner that the connection patterns are in contact with said domed metal keys connected to said columns and said domed metal keys connected to said rows, respectively.