Patent ID: 8828750
Filing Date: 2014-09-09
Classification: B41J

Abstract:
1. A MEMS type inkjet print head comprising: a semiconductor substrate; a CMOS layer on the substrate; a driver component comprising a first portion, a second portion, a membrane electrode, wherein the membrane electrode comprises a material selected from the group consisting of aluminum, copper, and indium tin oxide (ITO); a ground potential electrode interposed between the first portion of the membrane electrode and the second portion of the membrane electrode, wherein the ground potential electrode comprises a material selected from the group consisting of aluminum, copper, and ITO; a MEMS component comprising: a nozzle plate attached to the MEMS component; a passivation layer on the CMOS layer, wherein the first and second portions of the membrane electrode and the ground potential electrode are on the passivation layer, a first portion of the passivation layer is directly interposed between the CMOS layer and the first portion of the membrane electrode, a second portion of the passivation layer is directly interposed between the CMOS layer and the second portion of the membrane electrode, and a third portion of the passivation layer is directly interposed between the CMOS layer and the ground potential electrode; and the driver component further comprises a third bonding feature connected to the first bonding feature and a fourth bonding feature connected to the second bonding feature; and the first and second portions of the membrane electrode are interposed between the third bonding feature and the fourth bonding feature.