Abstract: A liquid discharge head includes: a pressure chamber communicating with a nozzle through which liquid is discharged; a piezoelectric element having a lamination structure in which a first electrode, a piezoelectric body layer, and a second electrode are laminated in this order; a vibration plate installed between the first electrode of the piezoelectric element and the pressure chamber; a protective substrate in which an internal space for housing the piezoelectric element is formed; and a lead-out wiring connected to the second electrode, in which a column portion is provided at a position overlapping with the piezoelectric element in the internal space of the protective substrate when viewed in a plan view, and the lead-out wiring is provided on a wall surface of the column portion.

Abstract: A liquid ejection head in the present disclosure provided with a first channel member including a first surface, a plurality of ejection ports in the first surface, a plurality of pressurizing chambers which are individually communicated with the plurality of ejection ports, and a second surface on the opposite side to the first surface; a pressurizing member on the second surface; and a second channel member including a third surface, a fourth surface on the opposite side to the third surface, a raised part which protrudes from the fourth surface, and a first through hole in the raised part. The second channel member is provided on a region in the second surface of the first channel member, in which the pressurizing member is not arranged. When viewed on a plane, an outer circumference of the raised part is located on inner side from an outer circumference of the fourth surface.

Abstract: A piezoelectric device includes in a piezoelectric layer, a recessed portion which is provided outside an active portion and opens on the side opposite to a substrate is provided, in a lamination direction of the substrate and a piezoelectric element, a first barrier layer formed of a material other than the zirconium oxide is formed in a region of a vibration plate opposite to the substrate and overlapping a bottom surface of the recessed portion, and the first barrier layer is not formed in a portion of a region overlapping the active portion in the lamination direction.

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 liquid ejection head includes: nozzles; a channel member including a plurality of pressure chambers each in communication with a corresponding one of the nozzles; and a plurality of piezoelectric elements corresponding to the pressure chambers. Each piezoelectric element includes: a vibrating film covering the corresponding pressure chamber; a piezoelectric film positioned opposite to the pressure chamber with respect to the vibrating film; a first electrode interposed between the vibrating film and the piezoelectric film; and a second electrode having compressive stress and positioned opposite to the vibrating film with respect to the piezoelectric film. The piezoelectric film has a ratio of (001) orientation to (100) orientation that is equal to or greater than 50%. The vibrating film and the piezoelectric film are deflected convexly toward the corresponding pressure chamber while no potential difference is produced between the first electrode and the second electrode.

Abstract: A liquid ejecting head includes a piezoelectric element which includes a piezoelectric layer, and a first electrode and a second electrode sandwiching the piezoelectric layer therebetween, a leading-out wiring provided on an upper portion of the piezoelectric element and including a wiring layer made of gold or platinum and an underlayer which are patterned, and an insulating protective film which covers at least an exposed portion on the underlayer of the leading-out wiring.

Abstract: There are provided a head chip, a liquid jet head, and a liquid jet recording device capable of enhancing the reliability. The head chip according to an embodiment of the disclosure is a head chip adapted to jet liquid including an actuator plate having a plurality of ejection grooves and a plurality of non-ejection grooves alternately arranged in parallel to each other along a first direction and each extending in a second direction crossing the first direction, and a nozzle plate having a plurality of nozzle holes individually communicated with the plurality of ejection grooves, and to be bonded to the actuator plate. The non-ejection grooves each partially open in a bonding surface of the actuator plate with the nozzle plate.

Abstract: The microfluidic device has a plurality of ejector elements. Each ejector element includes a first region, accommodating a first fluid flow channel and an actuator chamber; a second region, accommodating a fluid containment chamber; and a third region, accommodating a second fluid flow channel. The fluid containment chamber is fluidically coupled to the first and to the second fluid flow channels. The second region is formed from a membrane layer, from a membrane definition layer, mechanically coupled to the membrane layer and having a membrane definition opening, and a fluid chamber defining body, mechanically coupled to the membrane definition layer and having a chamber defining opening, with a width greater than the width of the membrane definition opening. The width of the membrane is thus defined by the width of the chamber defining opening.

Abstract: An acoustic wave resonator includes: a substrate; a resonating portion formed on a first surface of the substrate; a metal pad connected to the resonating portion through a via hole formed in the substrate; and a protective layer disposed on a second surface of the substrate and including a plurality of layers, wherein the plurality of layers includes an internal protective layer directly in contact with the second surface of the substrate and formed of an insulating material including an adhesion that is stronger than an adhesion of other layers, among the plurality of layers.

Abstract: There is provided a piezoelectric device including a pressure chamber, a piezoelectric element, and a diaphragm disposed between the pressure chamber and the piezoelectric element. The diaphragm has a crystal plane of an anisotropic single crystal silicon base of which a Young's modulus varies according to a direction in the crystal plane. In a vibration region of the diaphragm, which overlaps the pressure chamber in plan view, a first Young's modulus in a first direction, out of Young's modulus in the crystal plane, is higher than a second Young's modulus in the crystal plane in a second direction intersecting the first direction. A width of the piezoelectric element in the first direction is larger than a width of the piezoelectric element in the second direction.

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 ejecting apparatus includes a head unit capable of ejecting a liquid from a nozzle provided in a nozzle surface of a nozzle plate, an anchoring plate in which the head unit is anchored and that is provided with an opening region that exposes the nozzle surface, and a wiper member that wipes an anchoring plate exposed-surface located on the opposite side of the head unit of the anchoring plate and the nozzle surface. When an angle of contact between the nozzle surface and the liquid is taken as ?n, an angle of contact between the anchoring plate exposed-surface and the liquid is taken as ?s, and an angle of contact between the wiper member and the liquid is taken as ?w, the relationship ?n>?s>?w>90° is fulfilled.

Abstract: An elastic wave device includes a piezoelectric substrate, an IDT electrode on the piezoelectric substrate, a support member that is provided on the piezoelectric substrate so as to surround the IDT electrode, a cover that covers the support member, via electrodes that penetrate through the support member and the cover, and bumps that are bonded to the via electrodes. The IDT electrode is located in a hollow space that is enclosed by the piezoelectric substrate, the support member and the cover. A protruding portion extends along at least a portion of an outer peripheral edge of a surface of the cover that is on the opposite side from the piezoelectric substrate, and the protruding portion extends in a direction away from the piezoelectric substrate.

Abstract: A fluid ejection device includes a fluid slot, at least one fluid ejection chamber communicated with the fluid slot, a drop ejecting element within the at least one fluid ejection chamber, a fluid circulation channel communicated with the fluid slot and the at least one fluid ejection chamber, and a fluid circulating element communicated with the fluid circulation channel. The fluid circulating element is to provide on-demand circulation of fluid from the fluid slot through the fluid circulation channel and the at least one fluid ejection chamber.

Abstract: Provided is a piezoelectric element including a first electrode provided above a substrate, a piezoelectric layer provided above the first electrode, containing potassium, sodium, and niobium, and having a perovskite structure, and a second electrode provided above the piezoelectric layer. In a case where the piezoelectric layer is divided into two portions at a center thereof in a thickness direction, the piezoelectric layer includes a first portion on the first electrode side and a second portion on the second electrode side. The piezoelectric layer includes line defects. A density of the line defects in the second portion is higher than a density of the line defects in the first portion.

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 ejecting apparatus includes: a pressure chamber configured to communicate with a nozzle hole through which a liquid is discharged; a liquid chamber having a first opening configured to communicate with the pressure chamber; a first slide section arranged in the liquid chamber and having a first through-hole at a position corresponding to the first opening; and a driving device configured to drive the first slide section along a predetermined direction. The first slide section slides, by being driven by the driving device, along the predetermined direction on an inner wall surface having the first opening of the liquid chamber, and changes, by changing an area where the first opening and the first through-hole overlap with each other, an opening degree of the first opening, and the first slide section makes linear contact with the inner wall surface having the first opening along the predetermined direction.

Abstract: There is provided a recording apparatus including an apparatus main body including a recording head that ejects liquid from a nozzle opening formed in a nozzle plate, and an upstream electrode portion and a downstream electrode portion that are disposed on an upstream side and a downstream side in a transporting direction of the medium to sandwich the position facing the nozzle plate therebetween, in which the upstream electrode portion and the downstream electrode portion are configured such that an electric field is formed between the upstream electrode portion and the downstream electrode portion as voltages are applied.

Abstract: A piezoelectric driving device includes a vibrating plate, a first electrode, a piezoelectric layer, a second electrode layer provided above the vibrating plate. An active section is formed in a portion where the first electrode layer, the piezoelectric layer, and the second electrode layer overlap one another. The active section has a longitudinal direction and a latitudinal direction in plan view. At both ends in the latitudinal direction, ends of the first electrode layer are disposed in the same positions as ends of the wiring layer or further on the outer side than the ends, ends of the second electrode layer are disposed in the same positions as the ends of the wiring layer or further on the inner side than the ends, and the ends of the first electrode layer are disposed further on the outer side than the ends of the second electrode layer.

Abstract: An electronic device includes a capacitor that is configured with a first electrode layer, an insulating layer, and a second electrode layer being formed in the order listed herein. At least one end of the capacitor is defined by an end of the second electrode layer. The insulating layer is provided so as to extend to a non-element region that is on the outside of one end of the capacitor. The insulating layer under the non-element region is formed thinner than the insulating layer under the capacitor. A difference between the thickness of the insulating layer under the non-element region and the thickness of the insulating layer under the capacitor is equal to or less than 50 nm.

Abstract: A liquid ejection head includes a first substrate and a second substrate. The first substrate includes a pressure chamber communicating with an ejection port that ejects liquid, a diaphragm that forms part of a wall constituting the pressure chamber, and at least one piezoelectric element configured to generate energy for displacing the diaphragm to eject liquid through the ejection port. The second substrate has a cavity containing the piezoelectric element. The first substrate and the second substrate are joined together with an adhesive. A liquid repellent portion surrounding the piezoelectric element is disposed on a surface of the first substrate where the piezoelectric element is disposed.

Abstract: Layer structures for RF filters can be fabricated using rare earth oxides and epitaxial aluminum nitride, and methods for growing the layer structures. A layer structure can include an epitaxial crystalline rare earth oxide (REO) layer over a substrate, a first epitaxial electrode layer over the crystalline REO layer, and an epitaxial piezoelectric layer over the first epitaxial electrode layer. The layer structure can further include a second electrode layer over the epitaxial piezoelectric layer. The first electrode layer can include an epitaxial metal. The epitaxial metal can be single-crystal. The first electrode layer can include one or more of a rare earth pnictide, and a rare earth silicide (RESi).

Abstract: A head unit includes a circuit board, a casing, and a head module including: a nozzle plate and a liquid-passage defining member stacked on each other in a stacking direction; a drive element; and an interconnect member. A distance between a first end and a second end of the nozzle plate which are spaced in a first direction is greater than a distance between a third end and a fourth end of the nozzle plate which are spaced in a second direction. A distance between a seventh end and an eighth end of the circuit board which are spaced in the stacking direction is greater than a distance between a fifth end and a sixth end of the circuit board which are spaced in the first direction.

Abstract: An inkjet printing ink according to the present disclosure contains a pigment, acrylic particles, an alcohol, and water. The alcohol contains at least a trihydric alcohol. A ratio of an amount of the alcohol to a whole mass of the inkjet printing ink is 30% by mass or less. A ratio of an amount of the acrylic particles to a mass of the pigment is 5% by mass to 100% by mass. Further, the inkjet printing ink has negative skin irritation.

Abstract: An inkjet printhead having a fluidic chamber substrate, the fluidic chamber substrate having at least two droplet units provided in an array therein, the droplet units comprising: a fluidic chamber, a first fluidic port provided at a first surface of the fluidic chamber substrate, wherein the first fluidic port is in fluidic communication with the fluidic chamber, a nozzle formed in a nozzle layer provided at a second surface of the fluidic chamber substrate; and a vibration plate provided at the first surface of the fluidic chamber substrate, the vibration plate comprising an actuator for effecting pressure fluctuations within the fluidic chamber; and wherein the droplet units are arranged adjacent each other about an axis extending substantially in a width direction of the droplet units, wherein the first fluidic ports of the droplet units are staggered a first stagger offset distance from each other substantially in a length direction of the droplet units, and wherein a wiring layer extends over the first

Abstract: A droplet ejection device has a nozzle head with a plurality of ejection units, each of which includes a nozzle, a duct connected to the nozzle, and an electromechanical transducer arranged to create a pressure wave in a liquid in the duct so as to expel a droplet of the liquid from the nozzle. The device further includes an electronic control circuit arranged to apply control signals to the transducers and to receive detection signals that are generated in the transducers in response to the transducer being exposed to pressure fluctuations. The nozzle head includes a reference duct which has an electromechanical transducer serving as a reference transducer. The control circuit is arranged to subtract a detection signal of the reference transducer from a detection signal of at least one of the ejection units.

Abstract: A composite substrate has a first substrate having a surface; a second substrate having a first surface and a second surface opposite to the first surface in a thickness direction and facing the surface of the first substrate with a gap therebetween, the second substrate extending in a longitudinal direction perpendicular to the thickness direction, the second substrate having first and second ends in the longitudinal direction, and a driver circuit being provided on the first surface; a flexible print circuit board has a portion bonded a position on the first substrate between the first end and the driver circuit, the bonding region being defined on the first surface, and a support member positioned between the surface of the first substrate and the second surface of the second substrate, the support member overlapping all of the bonding region, as viewed in the thickness direction.

Abstract: A head module includes a head, a driver IC, a heat spreader, a holder and a heat insulator. The head ejects liquid in response to the driver IC. The heat spreader is in thermal communication with the driver IC. The holder supports the head. The heat insulator is located to thermally isolate the heat spreader and the holder.

Abstract: A liquid ejecting apparatus includes a flow path member including a common liquid chamber communicating with each of a plurality of nozzles formed in a nozzle surface, via a corresponding pressure generating chamber, a supply port provided in an inner wall of the common liquid chamber to supply a liquid to the common liquid chamber, a discharge port provided in a ceiling of the common liquid chamber to discharge an air bubble from the common liquid chamber, and a wall continuously extending from the inner wall, and including a surface opposing the discharge port.

Abstract: A liquid discharge apparatus includes a piezoelectric element that has a first electrode, a piezoelectric body, and a second electrode, a first switch that is capable of switching whether to supply a drive signal for driving the piezoelectric element to the first electrode, and a second switch that is arranged electrically in parallel with the piezoelectric element and is capable of switching whether to electrically connect the first electrode and the second electrode to each other.

Abstract: A liquid ejecting head includes: a piezoelectric element driven with a drive signal; a switch circuit which is provided on a circuit substrate; a pressure chamber which is filled with liquid and changes pressure inside in accordance with the drive by the piezoelectric element; and a reserve chamber which reserves the liquid to be supplied to the pressure chamber. The piezoelectric element is provided in a sealed space defined by a plurality of members including the circuit substrate. The reserve chamber includes a first flow channel and a second flow channel. A first end of the first flow channel communicates with a first end of the second flow channel. A second end of the first flow channel communicates with a second end of the second flow channel. The circuit substrate and switch circuit are provided between the first flow channel and the second flow channel.

Abstract: A liquid ejection apparatus includes: channel rows each including individual channels; piezoelectric elements each constituted by an individual electrode, a common electrode, and a piezoelectric layer; and individual wires respectively extending from the individual electrodes to an outside connecting region, connectable to an external circuit board, and each having a contact connectable to an individual terminal of the external circuit board. A portion of each of the channel rows has an intra-row void between adjacent two of the individual channels. Each of the individual wires extends to a portion of the outside connecting region which corresponds to one of the individual channels. A first common wire extending from the common electrode and connectable to a common terminal of the external circuit board is provided at a portion of the outside connecting region which corresponds to the intra-row void.

Abstract: A method for manufacturing a liquid ejection head including providing a negative first photosensitive resin layer on the substrate, forming a pattern of the flow path by selectively exposing the first photosensitive resin layer, providing a negative second photosensitive resin layer on the first photosensitive resin layer, providing a negative third photosensitive resin layer on the second photosensitive resin layer, forming a pattern of the ejection port by selectively exposing the second and third photosensitive resin layers, developing the first, second, and third photosensitive resin layers, irradiating an activation energy line on at least the third photosensitive resin layer after the developing, and heat curing the first, second, and third photosensitive resin layers after the irradiating of the activation energy line.

Abstract: An actuator component for a droplet deposition head that includes: a plurality of fluid chambers arranged side-by-side in an array, with certain of the fluid chambers being firing chambers, each of which is provided with at least one piezoelectric actuating element for causing droplet ejection from a nozzle for that firing chamber; and a plurality of non-actuable walls, each of which is formed of piezoelectric material and bounds at least one of the firing chambers.

Abstract: There are provided a liquid jet head and a liquid jet device capable of achieving reduction in size. There are included a first head chip and a second head chip stacked on one another in the Y direction, a first flow channel member disposed on the ?Y direction side of the first head chip, and having an inflow port communicated with an ink tank, and a first ink flow channel adapted to communicate the inflow port and the first head chip with each other, a second flow channel member disposed on the +Y direction of the second head chip, and having a second ink flow channel communicated with the second head chip, and a communication flow channel located between the first flow channel member and the second flow channel member, and adapted to communicate the first ink flow channel and the second ink flow channel with each other.

Abstract: An example device in accordance with an aspect of the present disclosure includes modules to generate an input signal, apply the input signal to an ink sample to obtain an ink signal, compare the ink signal to a reference value, and identify whether the ink signal is consistent with an ink signature. A module may be contained on an inkjet printhead die.

Abstract: Devices and method for performing temperature measurements in a printhead. In one embodiment, a printhead includes at least one row of jetting channels configured to jet droplets of a print fluid using piezoelectric actuators. A drive circuit includes an input voltage generator that applies a step voltage to a piezoelectric actuator of a jetting channel, and an output voltage detector that detects an output voltage across the piezoelectric actuator over time in response to the step voltage. The drive circuit also includes a temperature detector that determines a voltage response to the step voltage at the piezoelectric actuator based on the output voltage over time, and determines a temperature measurement for the piezoelectric actuator based on the voltage response of the piezoelectric actuator.

Abstract: There is provided a liquid discharge apparatus which includes a channel substrate having a nozzle, a pressure chamber which communicates with the nozzle, an actuator which covers the pressure chamber, and a contact point that is electrically connected to the actuator, and a circuit board which has wires that are to be electrically connected to contact points, and which is adhered to the channel substrate. The channel substrate includes an adhesive wall which is provided with contact points, and which has a surface to which an adhering portion of the circuit board to be adhered to the channel substrate, is adhered, and further includes a wall portion which is provided with a cavity on a side of the adhesive wall, opposite to the surface, and which demarcates the cavity on a side opposite to the surface, of the adhesive wall, and the adhering portion is facing the cavity and the wall portion.

Abstract: A piezoelectric device used in a liquid ejecting head that ejects liquid from a nozzle includes a flow path forming substrate in which an individual liquid chamber that communicates with the nozzle, and a liquid supply chamber that communicates with the individual liquid chamber are formed, a vibration plate formed at a position corresponding to the individual liquid chamber and the liquid supply chamber of the flow path forming substrate, a plurality of liquid supply ports formed in the liquid supply chamber, and a piezoelectric element including a first electrode, a piezoelectric layer, and a second electrode, the piezoelectric element being formed at a position on the vibration plate corresponding to the individual liquid chamber. A metal layer is stacked at a position on the vibration plate corresponding to the liquid supply chamber. The liquid supply ports are provided so as to penetrate the vibration plate and the metal layer.

Abstract: A liquid ejecting head may include a driver element that ejects liquid in a pressure chamber from a nozzle, a liquid storage chamber that stores liquid to be supplied to the pressure chamber, and a driver IC that drives the driver element. At least a part of the liquid storage chamber overlaps with both the driver element and the driver IC when viewed in plan.

Abstract: An ink composition of the invention is an ink composition to be charged in an ink storage container which includes an ink composition-replenishable ink chamber and an ink inlet, and the ink chamber is able to communicate with outside air. The ink composition includes a pigment; an organic compound; and water, and a resolubility index is 0.5 to 10 minutes, the resolubility index indicating a time required for that after the mass of the ink composition is decreased by 50%, the viscosity thereof is returned to an ink viscosity before the mass is decreased by addition of water in an amount equivalent to the decreased mass.

Abstract: A composite substrate includes: a first substrate; a second substrate; an electric contact; a first bump; and a second bump. The first substrate has a first surface. The first substrate has a thickness defining a thickness direction. The second substrate has a second surface. The second surface faces the first surface with a predetermined gap therebetween in the thickness direction. The electric contact is positioned at the second surface. The first bump includes: a core; and a conducting film. The core is provided at the first surface and has a convex shape protruding in the thickness direction. The conducting film covers a part of the core and is in contact with the electric contact. The second bump is provided at the first surface and has a convex shape protruding in the thickness direction. The second bump has a dimension in the thickness direction smaller than that of the first bump.

Abstract: A liquid discharge head includes a plurality of nozzles to discharge a liquid, a plurality of individual chambers communicating with the plurality of nozzles, a plurality of discharge channels communicating with the plurality of individual chambers, a plurality of supply-side common chambers connected to the plurality of individual chambers, and a plurality of discharge-side common chambers connected to the plurality of discharge channels. The plurality of discharge-side common chamber has a same fluid resistance.

Abstract: A liquid ejecting apparatus includes a liquid chamber in communication with a nozzle, a volume changing unit configured to change a volume of the liquid chamber, an inflow passage through which the liquid flows into the liquid chamber, an outflow passage through which the liquid flows out of the liquid chamber, a passage resistance changing unit configured to change a passage resistance of the outflow passage, and a controller configured to control the volume changing unit to reduce the volume of the liquid chamber so as to cause the liquid to be ejected through the nozzle. In filling the liquid chamber with the liquid for ejection of the liquid through the nozzle, the controller controls the passage resistance changing unit to change the passage resistance of the outflow passage to an increased passage resistance and controls the volume changing unit to increase the volume of the liquid chamber.

Abstract: A method of etching features in a silicon wafer includes coating a top surface and a bottom surface of the silicon wafer with a mask layer having a lower etch rate than an etch rate of the silicon wafer, removing one or more portions of the mask layer to form a mask pattern in the mask layer on the top surface and the bottom surface of the silicon wafer, etching one or more top surface features into the top surface of the silicon wafer through the mask pattern to a depth plane located between the top surface and the bottom surface of the silicon wafer at a depth from the top surface, coating the top surface and the one or more top surface features with a metallic coating, and etching one or more bottom surface features into the bottom surface of the silicon wafer through the mask pattern to the target depth plane.

Abstract: Printheads for jetting a print fluid. In one embodiment, a printhead comprises a main body configured to attach to a stack of plates, where the stack of plates forms a row of jetting channels configured to jet droplets of a print fluid. The main body includes a supply manifold configured to provide a fluid path for the print fluid to the row of jetting channels, a cavity, and a semi-permeable membrane disposed between the cavity and the supply manifold.

Abstract: Provided is a liquid ejecting head that ejects a liquid in a pressure chamber by a piezoelectric device, the piezoelectric device including a vibration plate, a piezoelectric layer containing lead, a first electrode provided between the vibration plate and the piezoelectric layer, and a second electrode provided on a side opposite to a side of the first electrode as viewed from the piezoelectric layer. The piezoelectric layer is preferentially oriented in a (100) plane, a lattice constant c defined by a crystal plane of the piezoelectric layer parallel to a film surface of the piezoelectric layer and a lattice constant a defined by a crystal plane perpendicular to the film surface satisfy 0.9945?c/a?1.012, and the thickness of the piezoelectric device is twice or more the thickness t (t<5 ?m) of the piezoelectric layer.

Abstract: A liquid ejecting head includes: a first pressure generation chamber communicating with a first nozzle opening via a first communication path, and a second pressure generation chamber communicating with a second nozzle opening via a second communication path. The first and second pressure generation chambers are aligned in a first direction. The first communication path includes, on one side of a second direction, a first oblique portion with a section area changing from a side of the first pressure generation chamber toward the first nozzle opening. The second communication path includes, on the other side of the second direction, a second oblique portion with a section area changing from a side of the second pressure generation chamber toward the second nozzle opening.

Abstract: It is an object of the present invention to provide a method for manufacturing a display device in which unevenness generated under a light-emitting element does not impart an adverse effect on the light-emitting element. It is another object of the invention to provide a method for manufacturing a display device in which penetration of water into the inside of the display device through a film having high moisture permeability can be suppressed without increasing processing steps considerably. A display device of the present invention comprises a thin film transistor and a light-emitting element, the light-emitting element including a light-emitting laminated body interposed between a first electrode and a second electrode; wherein the first electrode is formed over an insulating film formed over the thin film transistor; and wherein a planarizing film is formed in response to the first electrode between the first electrode and the insulating film.

Abstract: A liquid ejection head in the present disclosure provided with a first channel member including a first surface, a plurality of ejection ports in the first surface, a plurality of pressurizing chambers which are individually communicated with the plurality of ejection ports, and a second surface on the opposite side to the first surface; a pressurizing member on the second surface; and a second channel member including a third surface, a fourth surface on the opposite side to the third surface, a raised part which protrudes from the fourth surface, and a first through hole in the raised part. The second channel member is provided on a region in the second surface of the first channel member, in which the pressurizing member is not arranged. When viewed on a plane, an outer circumference of the raised part is located on inner side from an outer circumference of the fourth surface.