Patent ID: 7466389

Claim:
A display device which mounts a semiconductor chip on a substrate, wherein terminals which are connected with respective bumps of the semiconductor chip are formed by first openings formed in a first insulation film which expose portions of signal lines which are formed below the first insulation film, extending portions of the signal lines to a display part are exposed by second openings which penetrate a second insulation film and the first insulation film which is formed below the second insulation film and are connected with another conductive layers which are formed on the second insulation film, an angle of side wall surfaces of the first openings in the first insulation film which is made with respect to the substrate is set smaller than an angle of side wall surfaces of the second openings in the first insulation film which is made with respect to the substrate, and an angle of side wall surfaces of the second insulation film which is made with respect to the substrate at an edge of the second insulation film on a terminal side is set smaller than an angle of the side wall surfaces of the second insulation film which is made with respect to the substrate at the second openings.