Patent ID: 8777377

Claim:
A liquid discharge head comprising: a recording element substrate including an electrode pad for sending a signal to an element that generates energy used to discharge liquid; a support member including a recess that supports the recording element substrate on a bottom surface thereof; an electric wiring member joined to a surface of the support member in which the recess is formed, the electric wiring member including an opening through which the recording element substrate is exposed, an electric lead wire extending from the opening and connected to the electrode pad, and a protrusion that is integral with the electric wiring member and formed in the opening and extending between a side surface of the recording element substrate and an inner side surface of the recess facing the side surface, wherein a distal end of the protrusion contacts the bottom surface of the recess when the protrusion is accordingly deformed; and a sealant disposed in a region surrounded by a surface of the protrusion, the bottom surface of the recess, the inner side surface of the recess, and the side surface of the recording element substrate.