| abstract |
Provided is a circuit substrate that affords a narrower frame in display devices or the like, while suppressing connection faults between wirings and external connection terminals. The invention is a circuit substrate having a substrate, on top of which wiring, an insulating film and an external connection terminal are disposed in order. The circuit substrate is provided with an anisotropic conductive film, having conductive particles, on the external connection terminal; and the external connection terminal is connected to the wiring via at least one contact hole formed in the insulating film, with the length from one end to the other end, in a plan view, of a region formed with one or more contact holes that connect to a specific external connection terminal being greater than the diameter of each of the conductive particles. |