Liquid discharge head and method for manufacturing the same

Abstract

A liquid discharge head includes an electric contact electrically connected with a liquid discharge device; a first semiconductor substrate having an energy generation element for generating energy to discharge a liquid, and a driver unit including a first transistor and configured to drive the energy generation element; and a second semiconductor substrate having a receiving unit configured to possess a second transistor and receive a signal serially transmitted via the electric contact, and an expansion unit configured to possess a third transistor and parallel-convert the signal received in the receiving unit to generate a signal to control the driver unit, wherein a gate oxide film in the first transistor is thicker than a gate oxide film in the second transistor and a gate oxide film in the third transistor.

Dependencies are inferred from the claim text.