Liquid ejection head and method of manufacturing liquid ejection head

A method of manufacturing a liquid ejection head, comprising:

• placing, on a first electrical wiring member, a laminated film including an anisotropic conductive film and a separator film laminated together such that the anisotropic conductive film is in contact with the first electrical wiring member;
• peeling the separator film from the anisotropic conductive film placed on the first electrical wiring member;
• and
• placing a second electrical wiring member on the anisotropic conductive film from which the separator film has been peeled,
• wherein the liquid ejection head has an electrical connection structure, the electrical connection structure including a plurality of first leads having a raised shape is arranged in one direction along an edge portion of the first electrical wiring member, a plurality of second leads having a raised shape is arranged in the one direction along an edge portion of the second electrical wiring member, and the second electrical wiring member is arranged such that the plurality of first leads faces the corresponding second leads,
• the plurality of first leads includes a first end lead located at one end portion in the one direction, and the first electrical wiring member includes a first additional portion having a raised shape, at least a portion of the first additional portion being in contact with the first end lead in the one direction, and
• the anisotropic conductive film has the one end portion in the one direction located on the first additional portion.