Patent ID: 7988369

Claim:
A package comprising: a substrate ( 101 , 401 ) with a longitudinal direction and a lateral direction perpendicular thereto, said substrate ( 101 , 401 ) having a recess ( 103 , 403 ) formed in a first surface ( 102 , 402 ) and extending in the longitudinal direction of the substrate ( 101 , 401 ) said recess ( 103 , 403 ) having an inner surface, said inner surface of said recess ( 103 , 403 ) comprising at least a first set of conductive areas, said first set comprising at least a first area ( 106 , 406 ) and a second area ( 107 , 407 ) being provided with a conductive layer, said first area ( 106 , 406 ) and said second area ( 107 , 407 ) being mutually spaced in the lateral direction, and a cap ( 151 , 251 , 351 , 451 ) with a first surface ( 152 , 252 , 352 , 452 ) for mounting on top of said first surface ( 102 , 402 ) of said substrate ( 101 , 401 ), the cap ( 151 , 251 , 351 , 451 ) and the recess ( 103 , 403 ) of the substrate ( 101 , 401 ) defining an elongated channel in the longitudinal direction, characterised in that said cap ( 151 , 251 , 351 ) comprises at least a first set of conductive areas, said first set comprising at least a first area ( 156 , 256 , 356 ) and a second area ( 157 , 257 , 357 ) provided with a conductive layer, said first area ( 156 , 256 , 356 ) and said second area ( 157 , 257 , 357 ) being mutually spaced in the lateral direction.