Abstract: An electric circuit board includes: a booster circuit configured to generate a pump drive signal by boosting a pump reference signal having a reference voltage based on a booster circuit drive signal; a first wiring for transmitting the pump drive signal; a second wiring for transmitting the pump reference signal; a third wiring for transmitting the booster circuit drive signal; and a plurality of fourth wirings for transmitting signals related to an ejection element configured to eject a liquid, wherein the second wiring and the third wiring each have a portion disposed at a position spaced apart from the first wiring by a distance shorter than a protection distance, and have a short circuit protection circuit connected thereto, and the plurality of fourth wirings include one or more first type wirings disposed at a position spaced apart from the first wiring by a distance longer than the protection distance.

Abstract: A semiconductor device includes a stack including a conductor layer and an insulator layer, a block insulating layer, a channel layer, a charge storage layer provided between the block insulating layer and the channel layer, and a tunnel layer provided between the charge storage layer and the channel layer, where the charge storage layer includes a first charge storage layer containing Si, N and at least one of Al, Mo, Nb, Hf, Zr, Ti, B, or P, a second charge storage layer containing Si and N, in which Si is contained at a second concentration higher than a first concentration that is a concentration of Si in the first charge storage layer, and provided between the first charge storage layer and the tunnel layer, and a dielectric layer containing at least one of silicon oxynitride (SiON), silicon oxycarbonitride (SiOCN), or aluminum oxide (AlOx), and provided between the first charge storage layer and the second charge storage layer.

Abstract: A liquid ejection head includes a print element substrate having an ejection port for ejecting a liquid; a support member supporting the print element substrate; and an adhesive agent provided for adhering the print element substrate to the support member. The print element substrate includes a supply port opposed to the support member and communicating with the ejection port, a first surface opposed to the support member and surrounding the supply port, and a second surface opposed to the support member and provided along at least a part of an outer edge of the first surface and retracted from the first surface relative to the support member. The adhesive agent is filled in a first space between the first surface and the support member, and at least a part of a second space between the second surface and the support member.

Abstract: According to one embodiment, a semiconductor memory device includes a stacked film in which a plurality of silicon oxide layers, one of which having a film density of 2.3 g/cm3 or more, and a plurality of conductive layers, are alternately stacked in a first direction, and a memory pillar that penetrates the stacked film in the first direction, wherein a plurality of memory cells is provided in the memory pillar.

Abstract: In a liquid discharge head including a discharge-port forming member having a discharge-port row in which a plurality of discharge ports for discharging a liquid which is aligned in a predetermined aligning direction, a plurality of individual liquid chambers which cause each of the plurality of discharge ports to communicate with a common liquid chamber, and an element board having a plurality of elements which generates energy for discharging the liquid and disposed in the individual liquid chamber, a first supply port connecting to the common liquid chamber and a first collecting port connecting to the common liquid chamber, a second supply port disposed on a further toward outer side than an end portion of the discharge-port row in the aligning direction and a second collecting port disposed closer to the outer side than the end portion of the discharge-port row in the aligning direction are provided.

Abstract: A liquid ejection head includes ejection nozzles, pressure compartments, a supply port, and first pillar structures. The pressure compartments which each communicate with a corresponding ejection nozzle of the ejection nozzles and are each combined with an energy generating element configured to generates ejection energy for ejecting liquid. The supply port supplies the liquid to the pressure compartments. The first pillar structures are arranged between the supply port and the pressure compartments. The pressure compartments is each defined by a flow path walls arranged in line and parallel to each other. A liquid flow path is formed and configured to allow the liquid to flow through the liquid flow path from the at least one supply port via the first pillar structures into the pressure compartments. A longest clearance between the first pillar structures is smaller than a shortest clearance between the flow path walls and the first pillar structures.

Abstract: A liquid ejection head comprises: a first print element substrate having an ejection port for ejecting a liquid; a support member supporting the first print element substrate; and an adhesive agent provided for adhering the first print element substrate to the support member, wherein the first print element substrate includes a supply port opposed to the support member and communicating with the ejection port, a first surface opposed to the support member and surrounding the supply port, and a second surface opposed to the support member and provided along at least a part of an outer edge of the first surface and retracted from the first surface relative to the support member, and the adhesive agent is filled in a first space between the first surface and the support member, and at least a part of a second space between the second surface and the support member.

Abstract: A liquid ejection head includes an element substrate including an energy-generating element that applies ejection energy to liquid, a first electric wiring board electrically connected to the element substrate, and a second electric wiring board on which an integrated circuit element is mounted and which is electrically connected to the first electric wiring board. An electric signal is supplied to the integrated circuit element mounted on the second electric wiring board through the first electric wiring board, processed by the integrated circuit element, and supplied to the energy-generating element through the second electric wiring board and the first electric wiring board.

Abstract: A liquid ejection head includes an element substrate including an energy-generating element that applies ejection energy to liquid, a first electric wiring board electrically connected to the element substrate, and a second electric wiring board on which an integrated circuit element is mounted and which is electrically connected to the first electric wiring board. An electric signal is supplied to the integrated circuit element mounted on the second electric wiring board through the first electric wiring board, processed by the integrated circuit element, and supplied to the energy-generating element through the second electric wiring board and the first electric wiring board.

Abstract: A liquid ejecting head including a print element substrate including an ejection opening for ejecting a liquid, a wiring member including wiring electrically connected to the print element substrate, a connection electrically connecting the print element substrate to the wiring member, a support member supporting the wiring member, a sealing material sealing the connection, and a cover member provided on the support member. In the liquid ejecting head, the wiring member is a strip-shaped member, and a portion of the wiring member provided on a surface of the support member that supports the wiring member is covered by the sealing material and the cover member.

Abstract: A page-wide liquid ejection head configured to be removably installed in a main body of a liquid ejection apparatus includes a connection part for liquid through which a liquid is supplied from the main body and an electrical connector through which an electric signal is supplied from the main body. In the liquid ejection head, the connection part for liquid and the electrical connector are located at one side of the liquid ejection head in the longitudinal direction and are provided to face different directions from each other.

Abstract: A page-wide type liquid ejection head includes a plurality of recording element substrates, each having an ejection port array including a plurality of ejection ports, each ejection port communicating with a pressure chamber including therein a recording element, and a liquid supply path for supplying a liquid to the pressure chamber. The liquid ejection head also includes a flow path member mounting the recording element substrates arranged thereon. The flow path member includes common supply flow paths and individual supply flow paths that connect the liquid supply path to the common supply flow paths, and the individual supply flow paths include portions running obliquely to the direction orthogonal to the longitudinal direction of the liquid ejection head.

Abstract: A page-wide type liquid ejection head includes a plurality of recording element substrates, each having an ejection port array including a plurality of ejection ports, each ejection port communicating with a pressure chamber including therein a recording element, and a liquid supply path for supplying a liquid to the pressure chamber. The liquid ejection head also includes a flow path member mounting the recording element substrates arranged thereon. The flow path member includes common supply flow paths and individual supply flow paths that connect the liquid supply path to the common supply flow paths, and the individual supply flow paths include portions running obliquely to the direction orthogonal to the longitudinal direction of the liquid ejection head.

Abstract: The liquid ejection head 1 includes an element substrate 4 including an energy-generating element that applies ejection energy to liquid, a first electric wiring board 7 electrically connected to the element substrate 4, and a second electric wiring board 9 on which an integrated circuit element 10 is mounted and which is electrically connected to the first electric wiring board 7. An electric signal is supplied to the integrated circuit element 10 mounted on the second electric wiring board 9 through the first electric wiring board 7, processed by the integrated circuit element 10, and supplied to the energy-generating element through the second electric wiring board 9 and the first electric wiring board 7.

Abstract: A page-wide liquid ejection head configured to be removably installed in a main body of a liquid ejection apparatus includes a connection part for liquid through which a liquid is supplied from the main body and an electrical connector through which an electric signal is supplied from the main body. In the liquid ejection head, the connection part for liquid and the electrical connector are located at one side of the liquid ejection head in the longitudinal direction and are provided to face different directions from each other.

Abstract: A liquid ejecting head including a print element substrate including an ejection opening for ejecting a liquid, a wiring member including wiring electrically connected to the print element substrate, a connection electrically connecting the print element substrate to the wiring member, a support member supporting the wiring member, a sealing material sealing the connection, and a cover member provided on the support member. In the liquid ejecting head, the wiring member is a strip-shaped member, and a portion of the wiring member provided on a surface of the support member that supports the wiring member is covered by the sealing material and the cover member.

Abstract: A liquid discharge head includes a substrate having discharge energy generating elements generating energy for discharging liquid, a flow path member formed over the substrate and forming a flow path for supplying the liquid, an electric wiring member transmitting a signal for driving the discharge energy generating elements, and an electric connection electrically connecting the substrate to the electric wiring member. The liquid discharge head has a first sealant for sealing under the electric connection, a third sealant for sealing over the electric connection, and a second sealant for sealing side faces where the electric connection is not present, the side faces each being one of side faces of the substrate. An elastic modulus of the third sealant is the largest, that of the first sealant is the second, and that of the second sealant is the smallest. The first and third sealants contain the same type of resin.

Abstract: This invention is a manufacturing method of a liquid discharge head that includes a substrate having a plurality of discharge energy generating elements that generate energy that is utilized for discharging a liquid, and a discharge port forming member that constitutes a discharge port group including a plurality of discharge ports that discharge the liquid and flow paths that communicate with the discharge port group. The manufacturing method includes (1) disposing a photosensitive resin as material of the discharge port forming member on or above the substrate, and (2) forming an exposure pattern of the discharge port group using ultraviolet light in the photosensitive resin. In the aforementioned (2), the discharge port group is divided in a longitudinal direction and exposed, and the exposures are respectively performed so that regions in which there is a high degree of telecentricity face each other.

Abstract: A liquid discharge head includes a substrate having discharge energy generating elements generating energy for discharging liquid, a flow path member formed over the substrate and forming a flow path for supplying the liquid, an electric wiring member transmitting a signal for driving the discharge energy generating elements, and an electric connection electrically connecting the substrate to the electric wiring member. The liquid discharge head has a first sealant for sealing under the electric connection, a third sealant for sealing over the electric connection, and a second sealant for sealing side faces where the electric connection is not present, the side faces each being one of side faces of the substrate. An elastic modulus of the third sealant is the largest, that of the first sealant is the second, and that of the second sealant is the smallest. The first and third sealants contain the same type of resin.

Abstract: A capping unit is detachably mountable to an ink jet recording head. The ink jet recording head has an ejection outlet surface provided with ejection outlets for ejecting ink. The capping unit includes: a liquid-absorbing member provided with a projection contactable to a periphery of an area, in which the ejection outlets are formed, on the ejection outlet surface so as to form a gap between the area and the liquid-absorbing chamber; and a capping member including an engaging portion and an elastic portion for contacting a rear surface opposite from a surface on which the projection of said liquid-absorbing member is formed to press said liquid-absorbing member against the ejection outlet surface.