Patent ID: 6969450

Claim:
A biosensor comprising: a first insulating base plate comprising a first electrode provided thereon, and a second insulating base plate comprising a second electrode provided thereon, said first and said second electrodes being opposed to each other; and a first lead provided on said first base plate and connected to said first electrode, and a second lead provided on said second base plate and connected to said second electrode, wherein said first base plate comprises a first extension portion which extends in a length direction of said first base plate from a position corresponding to an end of said second base plate in its length direction, and has at least a part of said first lead exposed to outside, and wherein said second base plate comprises a second extension portion which extends in a width direction of said second base plate from a position corresponding to an end of said first base plate in its width direction, and has at least a part of said second lead exposed to outside on the second extension portion.