Patent ID: 7659605

Claim:
A COF board comprising: an insulating layer; and a terminal portion formed on the insulating layer, and electrically connected to an electronic component, wherein the terminal portion comprises a first lead extending in a longitudinal direction, and a second lead extending in the longitudinal direction, and having a length in the longitudinal direction smaller than a length of the first lead in the longitudinal direction, a plurality of the first leads are arranged in spaced-apart relation in a direction perpendicular to the longitudinal direction, a plurality of the second leads are arranged in the direction perpendicular to the longitudinal direction to be interposed between the mutually adjacent first leads such that, when the mutually adjacent first leads are projected in an adjacent direction thereof, overlap portions where the second leads overlap with the first leads and non-overlap portions where the second leads do not overlap with the first leads are formed, and dummy leads are provided at the non-overlap portions.