Patent ID: 7686428

Claim:
A liquid discharge head comprising: a substrate having a plurality of discharge ports; a plurality of energy generating elements disposed on a first surface of the substrate for generating energy to discharge liquid from the discharge ports; a liquid supply port formed to penetrate the substrate from the first surface to a second surface opposite to the first surface; a member provided on the first surface, forming walls of liquid chambers provided correspondingly to each of the energy generating elements and walls of liquid paths from the liquid supply port through the liquid chambers to the discharge ports; a plurality of first penetrating electrodes penetrating the substrate from the first surface to the second surface, wherein one of the first penetrating electrodes electrically connects to one of the energy generating elements; a plurality of second penetrating electrodes penetrating the substrate from the first surface to the second surface, wherein one of the second penetrating electrodes electrically connects to one of the energy generating elements connected to one of the first penetrating electrodes; a first power wiring provided on the second surface and electrically connected to the plurality of first penetrating electrodes; a second power wiring provided on the second surface and electrically connected to the plurality of first penetrating electrodes and the plurality of second penetrating electrodes; and a plurality of driving elements electrically connected between the first penetrating electrodes and the first power wiring, corresponding to each of the energy generating elements, to drive and control the energy generating elements.