Provided are a laminated piezoelectric element and an electroacoustic transducer capable of obtaining high piezoelectric characteristics and easily ensuring an electric contact to an electrode layer. A plurality of layers of piezoelectric films, each of which is formed by laminating a first protective layer, a first electrode layer, a piezoelectric layer, a second electrode layer, and a second protective layer in this order, are laminated. Each of the piezoelectric layers is polarized in a thickness direction. In each of the piezoelectric films, the first electrode is disposed on an upstream side in a polarization direction of the piezoelectric layer, and the second electrode is disposed on a downstream side. Each of the plurality of piezoelectric films has a cemented portion which is cemented to an adjacent piezoelectric film and a protruding portion which is not cemented to the adjacent piezoelectric film and in which at least the first electrode layer and the first protective layer or the second electrode layer and the second protective layer protrude from the cemented portion toward the outside in a plane direction. At the protruding portion of each of the piezoelectric films, at least one of a first contact, to which the first electrode layers of the piezoelectric films are electrically connected to each other, or a second contact, to which the second electrode layers of the piezoelectric films are electrically connected to each other, is formed.

The present disclosure relates to a display device including a piezoelectric film type actuator, the display device having a structure in which a groove is provided in a rear surface of a metal layer for supporting and encapsulate a rear surface of a display panel and the piezoelectric film type actuator is disposed in the groove. Accordingly, the display device may reduce the overall thickness and improve heat dissipation performance.

A piezoelectric actuator includes a piezoelectric element having a longitudinal direction, a case including a lid portion, a bottom portion, and a tubular portion and housing the piezoelectric element inside, and a strain gauge positioned at the tubular portion. The tubular portion includes a plurality of bent portions in the longitudinal direction, each of the plurality of bent portions bending in response to extension and contraction of the piezoelectric element. The strain gauge is positioned at the bent portion.

A plurality of conductive via connections are fabricated on a substrate located at positions where MTJ devices are to be fabricated, wherein a width of each of the conductive via connections is smaller than or equivalent to a width of the MTJ devices. The conductive via connections are surrounded with a dielectric layer having a height sufficient to ensure that at the end of a main MTJ etch, an etch front remains in the dielectric layer surrounding the conductive via connections. Thereafter, a MTJ film stack is deposited on the plurality of conductive via connections surrounded by the dielectric layer. The MTJ film stack is etched using an ion beam etch process (IBE), etching through the MTJ film stack and into the dielectric layer surrounding the conductive via connections to form the MTJ devices wherein by etching into the dielectric layer, re-deposition on sidewalls of the MTJ devices is insulating.

Embodiments described herein include a resonant process monitor and methods of forming such a resonant process monitor. In an embodiment, the resonant process monitor includes a frame that has a first opening and a second opening. In an embodiment, a resonant body seals the first opening of the frame. In an embodiment, a first electrode on a first surface of the resonant body contacts the frame and a second electrode is on a second surface of the resonant body. Embodiments also include a back plate that seals the second opening of the frame. In an embodiment the back plate is mechanically coupled to the frame, and the resonant body, the back plate, and interior surfaces of the frame define a cavity.

A cartridge for a high intensity focused ultrasound (HIFU) device and a piezoelectric linear motor are disclosed. By using the cartridge for a HIFU device according to the present invention, a transducer module is coupled to a piezoelectric linear motor driveable in water and embedded in the cartridge, heat generated when a conventional step motor is driven is fundamentally removed, an additional cooling fan is not needed, ultra-low power consumption and ultra-precise transfer can be realized, and thus an effective procedure can be performed. A skin beauty device may include ultrasound and high frequency units, apply a high frequency to a skin to be treated so as to crack a stratum corneum, and apply ultrasound to the skin to be treated, and thus a medicament drug can easily penetrate the treated skin. In addition, the piezoelectric linear motor in which a piezoelectric actuator and a moving shaft are stably coupled is provided.

A flexible sensor is provided which has a flexible substrate of polymeric material, a bottom electrode layer arranged on the flexible substrate and configured to be a reference electrode, an active layer of piezoelectric material arranged on the bottom electrode layer, a top electrode layer arranged on the active layer and configured to be connected to a signal conductor, and a flexible coating layer of polymeric material that cooperates with the flexible substrate to encapsulate the bottom electrode layer, the active layer, and the top electrode layer. The flexible sensor has an additional layer of metal material arranged on the flexible coating layer and short-circuited to the bottom electrode layer, the additional layer and the bottom electrode layer acting as an electromagnetic shield for the flexible sensor.

A resonator device includes a base, a resonator element attached to the base, a cover accommodating the resonator element between the base and the cover, and a conductive bonding member positioned between the base and the cover and bonding the base to the cover. The base includes a resonator element mount surface on which the resonator element is attached, a first interconnect and a second interconnect that are arranged on the resonator element mount surface and that are electrically coupled to the resonator element, a bonding surface bonded to the cover through the bonding member, and a step between the resonator element mount surface and the bonding surface.

The disclosure provides a piezoelectric element and a method for manufacturing a piezoelectric element. The disclosure provides the piezoelectric element comprising: a base layer, a piezoelectric layer which is disposed on one surface of the base layer, and in which upwardly curved convex portions and downwardly curved concave portions are continuously disposed along a first direction; and contact members which are disposed on the concave portions of the piezoelectric layer and on the one surface of the base layer to connect the piezoelectric layer to the base layer.

A piezoelectric device including a substrate, a metal-insulator-metal element, a hydrogen blocking layer, a passivation layer, a first contact terminal and a second contact terminal is provided. The metal-insulator-metal element is disposed on the substrate. The hydrogen blocking layer is disposed on the metal-insulator-metal element. The passivation layer covers the hydrogen blocking layer and the metal-insulator-metal element. The first contact terminal is electrically connected to the metal-insulator-metal element. The second contact terminal is electrically connected to the metal-insulator-metal element.