Patent ID: 8177330
Filing Date: 2012-05-15
Classification: B41J,H01L

Abstract:
1. A liquid discharge head comprising: a substrate having a liquid supply opening penetrating through a front surface and a back surface of the substrate to supply a liquid; energy generating means provided on the front surface of the substrate to generate energy for discharging the liquid; a first electrode terminal provided on the back surface of the substrate to supply the energy generating means with electric power and a drive signal; a support member formed at a plurality of stacked sheet members, the uppermost sheet member of the support member supporting the substrate from the back surface of the substrate, the sheet members each having a through-hole and an aperture, a liquid supply hole for supplying the liquid supply opening of the substrate with the liquid being formed by aligning the apertures of the sheet members, an electrical line having via holes each formed by filling an electrically conductive material in the through-holes penetrating the sheet members and conductive layers provided between adjacent sheet members, the electrical line being formed by connecting a plurality of the via holes and the conductive layers; a second electrode terminal provided on the uppermost sheet member of the support member so that the second electrode terminal is in contact with the electrical line, the second electrode terminal being positioned to have a space between the second electrode terminal and an edge of the aperture of the uppermost sheet member; an electrically conductive bump directly contacting the first electrode terminal and the second electrode terminal to electrically connect the first electrode terminal with the second electrode terminal; and a sealing agent filled between the substrate and the support member at least from a position where the bump is provided to the edge of the aperture of the uppermost sheet member of the support member.