Abstract: According to an embodiment, an ink jet head (liquid ejecting head) includes an actuator plate and a cover plate (see FIG. 8). As illustrated in FIG. 1, channel grooves for a discharge channel (ejection channel) and a non-discharge channel (non-ejection channel) in a Z-direction are formed on a front surface of the actuator plate, so as to be alternately arranged in an X-direction, by cutting with a dicing blade or the like. The discharge channel and the non-discharge channel are formed to have a groove width W of smaller than 70 ?m, in order to correspond to high density of nozzles. In the embodiment, the discharge channel and the non-discharge channel are formed to have a groove width of 55 ?m, 50 ?m, or 40 ?m, for example.

Abstract: An optical scanning device is provided. The optical scanning device includes a mirror having an optical reflection surface, a movable frame supporting the mirror, a pair of drive beams supporting the movable frame from both sides, a drive source, disposed on the drive beams, that causes the movable frame to be swung around a predetermined axis, a fixed frame supporting the drive beams. Each of the drive source includes a lower electrode formed on the drive beams, a piezoelectric thin film formed on the lower electrode, an upper electrode formed on the piezoelectric thin film, and a stress counter film, formed on the upper electrode or formed between the piezoelectric thin film and the upper electrode, that generates a compressive stress on the drive beams.

Abstract: A flow path forming substrate in which an individual flow path which communicates with a nozzle opening that discharges liquid is formed; and a communication plate in which a recess portion which configures at least a part of a common flow path that is common to and communicates with the plurality of individual flow paths is provided to be open on a side opposite to the flow path forming substrate, are provided, the recess portion includes a first recess portion, and a second recess portion which is deeper than the first recess portion, the communication plate includes a supply path which is provided to be open on a bottom surface of the first recess portion, communicates with the recess portion and the individual flow path, and becomes a throttle portion that throttles a flow path with respect to the individual flow path, and a communication path which communicates with the individual flow path and the nozzle opening, and in the individual flow path, a throttle portion which throttles the individual flow pat

Abstract: A liquid ejecting head includes: a nozzle plate provided with nozzle openings; an actuator unit including a flow channel formation substrate in which pressure generation chambers are provided and piezoelectric actuators that cause a change in the pressure of the liquid within respective pressure generation chambers; a communication substrate in which communication channels that communicate between the pressure generation chambers and corresponding nozzle openings are provided; a first case member that is a frame member affixed to the communication substrate so that the actuator unit is disposed within the first case member and that, along with the actuator unit, forms a manifold that holds the liquid to be supplied to the pressure generation chambers; and a second case member that is affixed to the first case member and in which is formed an introduction channel that sends the liquid from the exterior to the manifold.

Abstract: When a diameter of a hole at an exit of a nozzle is expressed as D (?m) and a distance between a position in a circulation flow path part on a side thereof closest to the exit and the exit is expressed as N (?m) in an ink jet driving apparatus, N?3.47D is satisfied. During non-ejection, a driving control unit generates a driving signal for withdrawing ink from the exit of the nozzle to a side of a pressure chamber through a distance of 0.16N or more and 0.555D or less, and for causing the ink meniscus to oscillate, and applies the driving signal to a driving element.

Abstract: A liquid ejection head includes a plurality of liquid chambers each including an energy generating element that generates energy for ejecting a liquid, an ejection opening that ejects the liquid, and a liquid supply opening that supplies the liquid, the liquid flowing in a first direction in the plurality of liquid chambers, and the plurality of liquid chambers being arranged in a second direction that intersects the first direction, and a plurality of first side walls that extend in the first direction and that form walls on both sides of the plurality of liquid chambers. In the liquid ejection head, each of the plurality of first side walls includes a fragmenting portion that fragments each of the plurality of first side walls in the first direction.

Abstract: A piezoelectric material contains: a first component which is a rhombohedral crystal in a single composition, has a Curie temperature Tc1, and is a lead-free-system composite oxide having a perovskite-type structure; a second component which is a crystal other than the rhombohedral crystal in a single composition, has a Curie temperature Tc2<Tc1, and is a lead-free-system composite oxide having a perovskite-type structure; and a third component which is a crystal other than the rhombohedral crystal in a single composition similar to the second component, has a Curie temperature Tc3?Tc1, and is a lead-free-system composite oxide that has a perovskite-type structure and is different from the second component. When a molar ratio of the third component to the sum of the second component and the third component is ? and ?×Tc3+(1??)×Tc2 is Tc4, |Tc4?Tc2|?50° C.

Abstract: An apparatus for a lead-free piezoelectric ink-jet printhead is disclosed. Piezoelectric printheads, while more expensive are favored because they use a wider variety of inks. The piezoelectric printhead includes a diaphragm, a plurality of piezoelectric actuators comprising a lead-free piezoelectric material, at least one nozzle, at least one ink chamber, a top electrode, and a drive circuit. The deflection of the diaphragm on the body chamber contributes to a pressure pulse that is used to eject a drop of liquid from the nozzle. According to an exemplary embodiment, a lead-free piezoelectric printhead operated at smaller thicknesses and significantly higher electric fields is disclosed, along with methods of making such printheads.

Abstract: There is provided a liquid jetting apparatus, including: a first pressure chamber and a second pressure chamber arranged in a first direction; a first insulating film covering the first and second pressure chambers; a first piezoelectric element arranged to face the first pressure chamber with the first insulating film being intervened therebetween; a second piezoelectric element arranged to face the second pressure chamber with the first insulating film being intervened therebetween; a trace arranged between the first and the second piezoelectric elements adjacent to each other in the first direction; and a second insulating film covering the trace. An end, in the first direction, of a part of the second insulating film covering the trace between the first piezoelectric element and the second piezoelectric element is positioned inside an end of a partition wall partitioning the first pressure chamber and the second pressure chamber.

Abstract: There is provided a method for manufacturing a liquid discharge apparatus including: forming a photoresist film made of a photoresist on a silicon substrate; exposing the photoresist film; forming a nozzle in the photoresist film by exposing the photoresist film and then developing the photoresist film; forming a channel hole in communication with the nozzle by carrying out an etching process from a surface of the substrate on the opposite side from the photoresist film after forming the nozzle; and joining a channel member to the surface of the substrate on the opposite side from the photoresist film, the channel member including a pressure chamber in communication with the channel hole and a piezoelectric element formed as a film to correspond to the pressure chamber.

Abstract: A nozzle plate is a nozzle plate provided with a plurality of nozzle openings, in which a DLC film is provided on a base material (silicon substrate) of the nozzle plate, the DLC film contains fluorine, a fluorine concentration in the DLC film decreases in a direction from a surface of the DLC film toward the silicon substrate, and a fluorine concentration in a region along the nozzle opening is lower than a fluorine concentration in the surface of the DLC film (surface of flat portion).

Abstract: There are provided a liquid jet head and a liquid jet recording device each capable of appropriately cutting off the liquid column formed immediately after being jetted from the jet hole to prevent the satellite droplet from generating, and further achieving easier maintenance of the jet hole part. The liquid jet head includes a drive actuator, a jet hole plate, and a flow channel operating actuator. The drive actuator applies a pressure variation to a liquid filled therein. The jet hole plate is disposed on a downstream side of the drive actuator and adapted to jet the liquid having flown out from the drive actuator from the jet hole to the outside of the drive actuator.

Abstract: A liquid discharge head to improve reliability of a dummy pressurization chamber, and a recording device including the liquid discharge head, the liquid discharge head including a channel member having discharge holes, pressurization chambers, a dummy pressurization chamber, and a substrate having pressurizing parts. The channel member includes a pressurization chamber plate, a dummy pressurization chamber plate, and stacked plates. A hole of the pressurization chamber plate has a side surface configuring a side surface of the pressurization chamber, and the hole has an opening configuring an opening of the pressurization chamber. A hole of the dummy pressurization chamber plate has a side surface configuring a side surface of the dummy pressurization chamber, and the hole has an opening configuring an opening of the dummy pressurization chamber. The substrate closes the openings of the pressurization chambers. The pressurization chamber plate closes the opening of the dummy pressurization chamber.

Abstract: An object of the present invention is to provide an inkjet head and the like in which an ink chamber can be separated by a simple structure with high accuracy. An inkjet head according to the present invention includes: a head chip including a plurality of nozzles that ejects inks, a plurality of pressure chambers respectively in communication with the plurality of nozzles, and a piezoelectric element that generates pressure change inside each of the plurality of pressure chambers to eject an ink; an ink chamber to store an ink; and a holding portion that is jointed to an ink supply hole forming surface of the head chip and holds the ink chamber. The holding portion is characterized in including: an outer peripheral wall holding portion to hold an outer peripheral wall of the ink chamber; and a separation wall holding portion to hold a separation wall of the ink chamber, and the ink chamber is separated into a plurality of portions by the separation wall and the separation wall holding portion.

Abstract: A method for manufacturing a piezoelectric actuator is disclosed that includes forming a vibration plate, forming a plurality of electrodes on the vibration plate, forming a piezoelectric layer on the electrodes, and forming a common electrode on the piezoelectric layer.

Abstract: A liquid jet head includes: a nozzle plate including a nozzle array, the nozzle array including a plurality of nozzle holes each extending in a Z direction, the nozzle holes being arranged side by side in an X direction; a head chip disposed in a +Z direction with respect to the nozzle plate and including ejection channels communicating with the respective nozzle holes; a manifold disposed in a +Y direction with respect to the head chip, the manifold being configured to support the head chip by a face facing a ?Y direction and including an ink flow path communicating with the ejection channels; and a drive board supported on the face facing the ?Y direction of the manifold and electrically connected to the head chip.

Abstract: A liquid ejection head includes a first channel member and a plurality of pressurizing parts. The first channel member includes a plurality of ejection holes, a common channel, a damper chamber, and a damper. The first channel member is configured by a plurality of flat plates including a first plate with the plurality of ejection holes and a second plate adjacent to this. The second plate includes a first part sandwiched between the damper chamber and the first plate. A covering layer is unevenly provided on the first surface of the first part.

Abstract: There is provided a ferroelectric thin-film laminated substrate, including a substrate, and further including a lower electrode layer, a ferroelectric thin-film layer, an upper electrode adhesive layer, and an upper electrode layer being sequentially stacked on the substrate, in which: the lower electrode layer is made of platinum or a platinum alloy; the ferroelectric thin-film layer is made of a sodium potassium niobate (typical chemical formula of (K1-xNax)NbO3, 0.4?x?0.7); the upper electrode layer is made of gold; the upper electrode adhesive layer is made of a metal that has less oxidizability than titanium and can make a solid solution alloy without generating an intermetallic compound with gold; and a part of the upper electrode adhesive layer and a part of the upper electrode layer are alloyed.

Abstract: A liquid droplet ejecting apparatus includes a liquid container, a liquid ejection chip that is fixed to a lower surface of the liquid container to receive liquid from the liquid container, and includes a pressure chamber formed therein, a nozzle to eject liquid from the pressure chamber, and an actuator disposed adjacent to the nozzle, a base member having an opening at which the liquid container is fixed such that the nozzle is exposed on a lower surface of the base member, and a circuit substrate fixed to a lower side of the base member and including a wiring electrically connected to the actuator on a lower surface of the circuit substrate.

Abstract: A liquid ejecting head includes a flow channel substrate and piezoelectric elements, with a diaphragm between the piezoelectric elements and the flow channel substrate. The flow channel substrate has pressure chambers lined up in a first direction with walls therebetween. Each piezoelectric element includes a first electrode, a piezoelectric layer and a second electrode. Each piezoelectric element has a piezoelectrically active portion, a region in which the piezoelectric layer is sandwiched between the first electrode and the second electrode, and are provided in regions facing the pressure chambers. The liquid ejecting head further includes holding members joined the diaphragm facing the walls using an adhesive agent. The width of the holding members is equivalent to or larger than the width of the walls. The width of an adhesive agent with which the holding members are joined to the diaphragm is equal to or smaller than the width of the walls.

Abstract: An electromechanical-transducing electronic component includes at least one element array of electromechanical transducer elements. A piezoelectric material of each transducer element is made of a composite oxide having a perovskite structure preferentially oriented to at least one of (100) and (001) planes and has a drop of diffraction intensity in a rocking curve corresponding to at least one of (200) and (002) planes measured at a position (2?=?max) of a diffraction peak intensity P where the diffraction intensity is largest in a diffraction intensity peak corresponding to the at least one of the (200) and (002) planes out of diffraction intensity peaks measured by an X-ray diffraction ?-2? method. ?P/PAVE is 20% or less where PAVE represents an average of the intensity P in the element array in the piezoelectric material of each transducer element and ?P represents a maximum difference of the intensity P in the array.

Abstract: A head includes the passageway member which is configured by a plurality of plates stacked through the adhesive and in which the ink passageways are configured by communication of the through holes individually formed in the plurality of plates to each other. The plurality of plates includes the resin plate and a plurality of metal plates. The resin plate does not have a relief groove for the adhesive. The plurality of metal plates include the eighth metal plate and/or ninth metal plate which is adhered to the resin plate and includes the relief groove for the adhesive on the resin plate side.

Abstract: A flow path member includes a plurality of flow paths including a first flow path, a filter chamber which communicates with the first flow path and is provided with a filter, and a second flow path which communicates with the filter chamber, in which the filter is disposed so that a direction including a direction where liquid of the first flow path or the second flow path flows is a surface direction, and in which a plurality of filter chambers are disposed at positions where at least the filter chambers partially overlap each other in a normal direction with respect to the surface direction of the filter.

Abstract: The piezoelectric body is configured to have a layered structure such that a plurality of unit layers are stacked in a film thickness direction, and each of the unit layers is formed of a first layer on which the displacement is relatively easy to occur, and a second layer which has a high concentration of Zr as compared with the first layer. In addition, when composition ratio Ti/(Zr+Ti) of Zr to Ti in each of the first layer and the second layer is set as Cr1 and Cr2, the composition ratio of each layer is adjusted so as to satisfy the following conditions (1) to (3): 0.41?Cr1?0.81??(1) 0.1?Cr1?Cr2?0.3??(2) Cr1>Cr2??(3).

Abstract: A liquid discharge apparatus is provided with a first flexible flat cable, a second flexible flat cable, a head unit, and a liquid absorbing member, the head unit includes discharge section which discharges a liquid due to driving signals being applied, a discharge surface which is provided with a discharge opening for discharging the liquid, a first connection section which is connected to the first flexible flat cable, and a second connection section which is connected to the second flexible flat cable, and the liquid absorbing member is provided between the first flexible flat cable and the second flexible flat cable.

Abstract: A piezoelectric thin film is manufactured by sequentially executing: a step of coating a substrate by applying a coating solution containing an organic solvent and a piezoelectric thin film precursor to form a coating layer; a step of evaporating the organic solvent from the coating layer in a windless environment to obtain a dried coating layer containing the piezoelectric thin film precursor; and a step of heating the dried coating layer to form a piezoelectric thin film from the dried coating layer containing the piezoelectric thin film precursor.

Abstract: A liquid discharge head includes an element substrate, a liquid supply substrate, a photosensitive resin layer with which the element substrate and the liquid supply substrate are adhered, and a liquid inflow through-hole penetrating the element substrate, the photosensitive resin layer, and the liquid supply substrate. The element substrate includes a pressure chamber including a discharge opening that discharges liquid, a liquid supply passage, in which one end is connected to the pressure chamber and another end is connected to the liquid inflow through-hole, the liquid supply passage supplying the liquid supplied from the liquid inflow through-hole to the pressure chamber, a diaphragm that forms a surface that opposes the discharge opening of the pressure chamber, a piezoelectric transducer that applies vibration to the diaphragm, and a partition portion, in which one surface opposes the liquid supply passage and another surface opposes the photosensitive resin layer through the diaphragm.

Abstract: A piezoelectric thin film is manufactured by sequentially executing: a step of coating a substrate by applying a coating solution containing an organic solvent and a piezoelectric thin film precursor to form a coating layer; a step of evaporating the organic solvent from the coating layer in a windless environment to obtain a dried coating layer containing the piezoelectric thin film precursor; and a step of heating the dried coating layer to form a piezoelectric thin film from the dried coating layer containing the piezoelectric thin film precursor.

Abstract: A printhead includes an aperture plate having an array of nozzles therethrough. The printhead further includes an array of jets fluidly connected to an ink supply chamber, each jet comprising a body chamber having a length:width ratio of at least 3:1. The body chamber comprises a first end, and a second end opposite the first end, the first end and the second end defining a height. Ink flows into body chamber through an inlet, and an outlet on the first end is fluidly connected to a nozzle. A diaphragm is present adjacent the second end of each body chamber in the array of jets. The body chambers are angled relative to a row of nozzles.

Abstract: Provided is a liquid ejecting head which includes head bodies aligned in a direction of liquid ejection surface thereof, a flow-path member in which distribution flow path is provided to supply liquid to the head bodies, and flexible wiring substrates connected to the head bodies. The distribution flow path extends in the first direction. In addition, the flexible wiring substrates adjacent in the first direction overlap when viewed from the first direction. The distribution flow path is disposed in an area on one side with respect to the flexible wiring substrates, in a direction perpendicular to the first direction in the liquid ejection surface.

Abstract: A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.

Abstract: A liquid jet head includes a partition separating adjacent grooves, a lower substrate fixing a lower portion of the partition, and an upper substrate installed on an upper end surface of the partition. The partition includes an electrode layer on a surface lower than the upper end surface, the electrode layer including an outer surface approximately perpendicular to the upper end surface, the outer surface continuing to the upper end surface through a first convex curved surface curving outward.

Abstract: Disclosed a head unit including: a plurality of ejecting units that eject liquids; a driving IC that drives the plurality of ejecting units; a substrate; a first electrode group that includes a plurality of electrodes connected to the driving IC and the substrate; and a second electrode group that includes a plurality of electrodes connected to the driving IC and the substrate, in which the driving IC is a rectangular shape in plan view.

Abstract: A flow passage member is used in a liquid ejecting head including an ejecting unit. The ejecting unit communicates with a self-sealing unit which is a negative pressure generation mechanism. The flow passage member includes a flow passage internal pressure adjustment mechanism that adjusts a pressure inside a flow passage between the self-sealing unit and the ejecting unit by changing a volume of the flow passage on a way of the flow passage and a flow passage opening and closing mechanism that opens and closes the flow passage on a way of a flow passage between the self-sealing unit and the flow passage internal pressure adjustment mechanism.

Abstract: A liquid ejecting apparatus is provided with an actuator substrate on which a piezoelectric actuator that generates a pressure change in a pressure generation chamber, which is in communication with a nozzle opening that ejects a liquid, is provided. The liquid ejecting head is provided with lead-out wiring that is led out from the piezoelectric actuator to the top of the actuator substrate, the lead-out wiring is provided with an adhesive layer that is provided on an actuator substrate side, and a conductive layer that is provided on a side of the adhesive layer which is opposite the actuator substrate, and the adhesive layer has a width that is narrower than the conductive layer in at least a parallel arrangement direction of the lead-out wiring.

Abstract: A liquid ejecting head includes a plurality of actuators, a plurality of pressure chambers that are provided so as to correspond to the actuators, and communicate with a common liquid chamber, a first member that defines the common liquid chamber, and includes a compliance sheet that absorbs vibrations of liquid on an upstream side of the common liquid chamber, and an inlet that is formed so as to penetrate the compliance sheet, a canopy portion that is provided at an open peripheral edge of the inlet of the first member, and has a receiving surface to which the compliance sheet is joined, and a receiving portion that is provided opposite the inlet across the canopy portion, and receives liquid introduced from the inlet.

Abstract: Provided are a vibrating plate, a first electrode provided over the vibrating plate, a piezoelectric layer provided over the first electrode, and a second electrode provided over the piezoelectric layer are provided. The piezoelectric layer is interposed between the first electrode and the second electrode. The piezoelectric layer includes an active portion of which at least one end portion is defined by the first electrode, and a non-active portion provided on an outside of the end portion of the first electrode for defining the active portion. The vibrating plate includes a first vibration portion under the non-active portion and a second vibration portion on an outside of the first vibration portion. The second vibration portion includes a taper part having the thickness which is increased toward the first vibration portion.

Abstract: An inkjet printing head includes a pressure chamber, a vibrating film formation layer including a vibrating film defining the pressure chamber, and a piezoelectric element disposed on the vibrating film. The piezoelectric element includes a lower electrode formed on the vibrating film formation layer, a piezoelectric film formed on the lower electrode, and an upper electrode formed on the piezoelectric film. The lower electrode includes a crossover region crossing over a peripheral edge of the top surface portion of the pressure chamber in a plan view. In the lower electrode, a thickness of the crossover region and a portion, excluding the crossover region, of an inner electrode region, disposed at an inner side of peripheral edges of the top surface portion of the pressure chamber in a plan view, is defined to be thinner than a thickness of other portions of the lower electrode.

Abstract: A fluid ejection device may include a laminate fluid manifold including plates in a laminate plate stack. The stack may include a fluid passage extending to an edge of the laminate plate stack. A die maybe secured across the edge of the laminate plate stack, wherein the die includes opening to receive fluid transmitted through the fluid passage.

Abstract: A piezoelectric printhead assembly can include a micro-electro mechanical system (MEMS) die including a plurality of nozzles and a first application-specific integrated circuit (ASIC) die coupled to the MEMS die by a first plurality of wire bonds.

Abstract: A liquid jet head includes a nozzle plate having a first nozzle row and a second nozzle row each formed of a plurality of nozzles; and a piezoelectric plate having a plurality of first ejection grooves communicating with respective ones of the plurality of nozzles of the first nozzle row, and a plurality of second ejection grooves communicating with respective ones of the plurality of nozzles of the second nozzle row. The plurality of first ejection grooves and the plurality of second ejection grooves are longitudinally separated from each other in the longitudinal direction of the grooves by a partition wall located between the plurality of first ejection grooves and the plurality of second ejection grooves.

Abstract: A liquid droplet ejecting apparatus includes a liquid container, a liquid ejection chip that is fixed to a lower surface of the liquid container to receive liquid from the liquid container, and includes a pressure chamber formed therein, a nozzle to eject liquid from the pressure chamber, and an actuator disposed adjacent to the nozzle, a base member having an opening at which the liquid container is fixed such that the nozzle is exposed on a lower surface of the base member, and a circuit substrate fixed to a lower side of the base member and including a wiring electrically connected to the actuator on a lower surface of the circuit substrate.

Abstract: A liquid discharging apparatus includes: a channel structure having nozzles aligned in a first direction and pressure chambers aligned in the first direction corresponding to the nozzles respectively; piezoelectric elements aligned in the first direction in the channel structure, corresponding to the pressure chambers respectively; a cover covering the piezoelectric elements and having first and second wall portions arranged in a second direction orthogonal to the first direction and joined to the channel structure at first and second joint regions respectively; and traces being extended to one side in the second direction from the piezoelectric elements respectively, passing through the first region, and extending up to outside of the cover. An area of the first joint region is greater than an area of the second region.

Abstract: A piezoelectric device includes a first substrate having an empty chamber, a diaphragm defining a surface of the empty chamber, a piezoelectric element formed by stacking a first electrode layer, a piezoelectric layer, and a second electrode layer in sequence from the diaphragm side, the piezoelectric element provided on the side of the diaphragm opposite to the empty chamber, and a second substrate provided on the side of the first substrate opposite to the diaphragm. The thickness of at least a part of the first substrate in an opening peripheral area of the empty chamber is thicker than the thickness in an area outside the opening peripheral area.

Abstract: In accordance with an embodiment, an ink-jet head is provided which comprises a substrate; a piezoelectric body configured to have a plurality of parallel partition walls at the same pitch interval in the nozzle arrangement direction on the substrate and be plurally arranged in a direction orthogonal to the nozzle arrangement direction; a frame body configured to be arranged on the substrate at the outside of the piezoelectric body; and a nozzle plate configured to have a plurality of discharge openings which is formed by shifting by a half pitch in the nozzle arrangement direction in each row of pressure chambers formed with plural rows by the frame body and a plurality of the partition walls and is respectively formed in the orthogonal direction at a pitch identical to the pitch in each the pressure chamber.

Abstract: An actuator includes a piezoelectric layer, a vibration plate, and a reduction inhibition layer. The piezoelectric layer includes an oxide material. The vibration plate is disposed below the piezoelectric layer, and configured to deform when the piezoelectric layer deforms. The reduction inhibition layer is disposed between the piezoelectric layer and the vibration plate, and configured to inhibit reduction reaction in the piezoelectric layer.

Abstract: A conduction structure includes a device substrate (first substrate), an IC (second substrate) having an upper surface and an end surface, a sealing plate (third substrate) having an upper surface and an end surface, a conductive layer having a first part provided on an upper surface of the device substrate, a second part provided on the end surface of the IC and connected to the first part, a third part provided on the upper surface of the IC and connected to the second part, and a fourth part provided on the end surface of the sealing plate and connected to both of the first part and the second part, and a plating layer overlapped with the conductive layer.

Abstract: A head includes a channel formation substrate having two piezoelectric actuator rows formed thereon, a driving circuit, and a driving circuit board which is provided with a first bump and a second bump, in which the first bump is provided on the outside of the piezoelectric actuator row, an adhesive layer is provided on both sides of the first bump and the second bump, a first through hole and a second through hole are provided on the driving circuit board, a first connection wiring and a second connection wiring are provided in the first through hole and the second through hole, and a first electrode of the piezoelectric actuator is electrically connected to a first connection wiring via the first bump and a second electrode is electrically connected to a second connection wiring via the second bump.

Abstract: Provided is a bonded structure including a first substrate in which a resin portion made of an elastic member protrudes on one surface and a first electrode layer is formed to cover at least a part of the resin portion, and a second substrate in which a second electrode layer electrically connected to the first electrode layer is formed on a surface facing the first substrate, the first substrate and the second substrate being bonded to each other in a state in which a photosensitive adhesive is interposed therebetween. In a surface of one of the first substrate and the second substrate on the photosensitive adhesive side, a first region reflecting light and a second region less likely to reflect light than the first region are provided in positions different from each other on a region overlapping the photosensitive adhesive in a substrate bonding direction.

Abstract: A liquid ejecting head includes a piezoelectric element that is disposed on a flow passage formation substrate, and discharges liquid from nozzle openings through the nozzle openings by pressurizing the liquid which fills the inside of a pressure generating chamber due to the displacement of a vibration film according to driving of the piezoelectric element, the piezoelectric element includes an insulating film formed on the vibration film, a first electrode film formed on the insulating film, a piezoelectric layer formed on the first electrode film, and a second electrode film formed on the piezoelectric layer, and the insulating film includes a lower insulating film formed on the vibration film and an upper insulating film which is formed on the lower insulating film with the same material as that of the lower insulating film, but has a different crystal structure.