Patent application number | Description | Published |
20130135400 | LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS AND PIEZOELECTRIC ELEMENT - A piezoelectric element includes a plurality of individual electrodes, a piezoelectric layer formed on each of individual electrodes, and a common electrode which is formed on the piezoelectric layer and is an electrode common to the individual electrodes. Further, a protection film covering a region, which is not covered by the common electrode on the individual electrode, is provided. | 05-30-2013 |
20130194353 | LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS - A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber. | 08-01-2013 |
20130208056 | LIQUID DROPLET EJECTING HEAD - A liquid droplet ejecting head includes an individual electrode provided corresponding to a pressure generating chamber, a piezoelectric layer formed over the individual electrode, and a common electrode formed over the piezoelectric layer and provided across a plurality of the pressure generating chambers. A conductive member is provided outside an active portion of the piezoelectric layer in the longitudinal direction, the conductive member being formed over the piezoelectric layer and being insulated from the individual electrode and the common electrode, the piezoelectric layer being interposed between the individual electrode and the common electrode. | 08-15-2013 |
20130265371 | LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS AND ACTUATOR - A third electrode is provided on a second electrode configuring a piezoelectric element by covering a region facing a pressure generation chamber. | 10-10-2013 |
20140118447 | LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS AND PIEZOELECTRIC ELEMENT - A piezoelectric element includes a plurality of individual electrodes, a piezoelectric layer formed on each of individual electrodes, and a common electrode which is formed on the piezoelectric layer and is an electrode common to the individual electrodes. Further, a protection film covering a region, which is not covered by the common electrode on the individual electrode, is provided. | 05-01-2014 |
20140132676 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS AND ACTUATOR - A first electrode is on a substrate, a piezoelectric layer is on the first electrode, and a second electrode is on the piezoelectric layer. The piezoelectric layer has an active section and an inactive section. The active section is located between the first electrode and the second electrode, and at least one of its ends is defined by the second electrode. The inactive section is thinner than the active section and extends outside the end of the second electrode that defines the active section. The active section and the inactive section are continuous with a slope therebetween. The second electrode has compressive stress. | 05-15-2014 |
20140210916 | LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS - A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber. | 07-31-2014 |
20150085024 | LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS - A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber. | 03-26-2015 |