Liquid discharge head and method of producing liquid discharge head

A liquid discharge head comprising:

• a substrate including a pressure chamber;
• an actuator including a driving element configured to apply pressure to liquid in the pressure chamber;
• and
• a channel member including a supply channel configured to supply the liquid to the pressure chamber,
• wherein the actuator includes:
• a first film arranged on the substrate to cover the pressure chamber;
• and
• a second film arranged on an opposite surface of the first film in a stacking direction, the opposite surface being opposite to the substrate, wherein the channel member does not overlap the second film in an orthogonal direction orthogonal to the stacking direction,
• wherein the substrate and the channel member are attached to each other with an adhesive in a state that the first film and the second film are sandwiched between the substrate and the channel member,
• wherein a first through hole is located in a part of the first film at which the pressure chamber and the supply channel are overlapped in a stacking direction of the first film and the second film,
• wherein a second through hole is located in a part of the second film at which the first through hole is overlapped in the stacking direction,
• wherein an edge of the first through hole is positioned further inward of the second through hole than an edge of the second through hole, and
• wherein the adhesive is applied to a part of the opposite surface of the first film at which the second through hole is overlapped in the stacking direction, so as to cover a boundary part between the first film and the second film.