Patent application number | Description | Published |
20080211881 | PIEZOELECTRIC MEMBER, PIEZOELECTRIC ELEMENT, AND LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE APPARATUS UTILIZING PIEZOELECTRIC ELEMENT - The invention provides a piezoelectric film having a large piezoelectric property, and a piezoelectric element, a liquid discharge head and a liquid discharge apparatus utilizing the same. The piezoelectric film is formed by an epitaxial oxide of <100> orientation having at least a tetragonal crystal structure, in which the oxide is a perovskite type composite oxide represented by a general formula ABO | 09-04-2008 |
20090026408 | PIEZOELECTRIC MATERIAL - The present invention provides a piezoelectric material which can be applied even to the MEMS technique, exhibits satisfactory piezoelectricity even at high ambient temperatures and is environmentally clean, namely, a piezoelectric material including an oxide obtained by forming a solid solution composed of two perovskite oxides A(1)B(1)O | 01-29-2009 |
20090091215 | PIEZOELECTRIC ACTUATOR AND LIQUID DISCHARGE HEAD USING THE SAME - The piezoelectric actuator includes a piezoelectric film between two electrode layers and a diaphragm. Assuming that: each elastic coefficient of all materials is isotropic and a distortion amount of the piezoelectric film by an electric field is isotropic in all in-plane directions; a point located on a diaphragm surface and having a maximum displacement when a predetermined electric field is applied to distort the piezoelectric film, is expressed by Pδ | 04-09-2009 |
20090140197 | PIEZOELECTRIC ELEMENT, AND LIQUID JET HEAD AND ULTRASONIC MOTOR USING THE PIEZOELECTRIC ELEMENT - There is disclosed a piezoelectric element having, on a substrate, a piezoelectric body and a pair of electrodes which come in contact with the piezoelectric body, wherein the piezoelectric body consists of a perovskite type oxide represented by the following formula (1): | 06-04-2009 |
20090273257 | PIEZOELECTRIC SUBSTANCE, PIEZOELECTRIC ELEMENT, AND LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE APPARATUS USING PIEZOELECTRIC ELEMENT - A piezoelectric substance which is made of oxide with perovskite type structure which is made of ABO | 11-05-2009 |
20100052113 | EPITAXIAL FILM, PIEZOELECTRIC ELEMENT, FERROELECTRIC ELEMENT, MANUFACTURING METHODS OF THE SAME, AND LIQUID DISCHARGE HEAD - There are disclosed an epitaxial film, comprising: heating an Si substrate provided with an SiO | 03-04-2010 |
20110128327 | PIEZOELECTRIC CERAMIC, METHOD FOR MAKING THE SAME, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, AND ULTRASONIC MOTOR - A piezoelectric ceramic that includes barium titanate and 0.04 mass % or more and 0.20 mass % or less manganese relative to barium titanate. The piezoelectric ceramic is composed of crystal grains. The crystal grains include crystal grains A having an equivalent circular diameter of 30 μm or more and 300 μm or less and crystal grains B having an equivalent circular diameter of 0.5 μm or more and 3 μm or less. The crystal grains A and the crystal grains B individually form aggregates and the aggregates of the crystal grains A and the aggregates of the crystal grains B form a sea-island structure. | 06-02-2011 |
20130214639 | PIEZOELECTRIC CERAMIC, METHOD FOR MAKING THE SAME, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, AND ULTRASONIC MOTOR - A piezoelectric ceramic that includes barium titanate and 0.04 mass % or more and 0.20 mass % or less manganese relative to barium titanate. The piezoelectric ceramic is composed of crystal grains. The crystal grains include crystal grains A having an equivalent circular diameter of 30 μm or more and 300 μm or less and crystal grains B having an equivalent circular diameter of 0.5 μm or more and 3 μm or less. The crystal grains A and the crystal grains B individually form aggregates and the aggregates of the crystal grains A and the aggregates of the crystal grains B form a sea-island structure. | 08-22-2013 |