Abstract: A nitride semiconductor device includes a substrate, a first nitride semiconductor layer, a first p-type nitride semiconductor layer and a second nitride semiconductor layer disposed sequentially from below; an electron transport layer and an electron supply layer arranged sequentially from below to cover a first opening and the second nitride semiconductor layer, the first opening penetrating through the second nitride semiconductor layer and the first p-type nitride semiconductor layer; a second p-type nitride semiconductor layer or an insulating layer disposed in a position overlapping with a bottom surface of the first opening; a gate electrode disposed in a position overlapping with the second nitride semiconductor layer; a first source electrode disposed to cover a second opening penetrating through the electron supply layer and the electron transport layer; a drain electrode; and a second source electrode disposed above the second p-type nitride semiconductor layer or the insulating layer.

Abstract: A nitride semiconductor device includes: a substrate; a first nitride semiconductor layer provided above the substrate; a second nitride semiconductor layer of p-type conductivity provided above the first nitride semiconductor layer; a third nitride semiconductor layer and a fourth nitride semiconductor layer that are provided along the inner surface of a first opening and at a portion that is outside the first opening and above the second nitride semiconductor layer, the first opening passing through the second nitride semiconductor layer; a gate electrode; a source electrode; and a drain electrode. The third nitride semiconductor layer includes: a bottom portion provided along the bottom surface of the first opening; and an outer edge portion provided outside the first opening. The layer thickness of the bottom portion is less than the layer thickness of the outer edge portion.

Abstract: A nitride semiconductor device includes: a substrate; a first semiconductor layer of a first conductivity type disposed above the substrate; a second semiconductor layer of a second conductivity type disposed above the first semiconductor layer; a third semiconductor layer that includes a channel and is at least partially disposed above the second semiconductor layer; a gate electrode; a source electrode; a drain electrode; a first insulating layer disposed above the gate electrode and including nitride as a main component; and a second insulating layer disposed to cover a side surface of a groove that is provided in an edge termination area of the nitride semiconductor device. In the plan view, an end portion of the first insulating layer coincides with an end portion of the groove, or is positioned inside relative to the end portion of the groove and outside relative to an outermost periphery of the source electrode.

Abstract: A nitride semiconductor device includes: a substrate; a first semiconductor layer of a first conductivity type disposed above the substrate; a second semiconductor layer disposed above the first semiconductor layer, having a bandgap larger than that of the first semiconductor layer, and undoped; a third semiconductor layer of a second conductivity type disposed above the second semiconductor layer; a fourth semiconductor layer including a channel, and at least partially disposed above the third semiconductor layer; a gate electrode disposed above the first semiconductor layer; a drain electrode disposed below the substrate; and an insulating layer disposed above the gate electrode. The insulating layer covers a bottom and a side wall of a groove provided in an edge termination area of the nitride semiconductor device and penetrating through the third semiconductor layer to reach the second semiconductor layer.

Abstract: A nitride semiconductor device includes a substrate, a first nitride semiconductor layer, a first high-resistance semiconductor layer, a first p-type nitride semiconductor layer, and a second high-resistance semiconductor layer that are arranged sequentially from a lower side; an electron mobility layer and an electron supply layer covering a first opening that penetrates through the second high-resistance semiconductor layer, the first p-type nitride semiconductor layer, and the first high-resistance semiconductor layer; a potential-fixing electrode that is disposed in contact with the first p-type nitride semiconductor layer; and an insulating film that covers a gate electrode and a source electrode. The insulating film is disposed along an inner surface of a groove portion that is disposed in an end portion of the nitride semiconductor device, and penetrates through the first p-type nitride semiconductor layer. The first high-resistance semiconductor layer is a high-resistance AlGaN layer.

Abstract: A nitride semiconductor device includes a substrate, a first semiconductor layer of a first conductivity type, a second semiconductor layer of a second conductivity type, a third semiconductor layer that has a resistance higher than that of the second semiconductor layer, and a fourth semiconductor layer of the second conductivity type that are arranged sequentially from a lower side; a fifth semiconductor layer including a channel region of the first conductivity type, a portion of the fifth semiconductor layer being disposed along the inner surface of a first opening and the other portion of the fifth semiconductor layer being disposed above the fourth semiconductor layer, the first opening penetrating through the fourth semiconductor layer, the third semiconductor layer, and the second semiconductor layer; a sixth semiconductor layer of the second conductivity type disposed above the fifth semiconductor layer; a gate electrode; a source electrode; and a drain electrode.

Abstract: An outdoor unit includes a heat exchanger, a blower fan, an electronic board on which a heat-generating element is mounted, a housing, and a heatsink. The housing includes a partition plate partitioning the inside of the housing into a heat exchanger chamber in which the heat exchanger and the blower fan are placed and a machine chamber in which the electronic board and a compressor are placed, and a portion of the partition plate has an opening. The heatsink includes a main plate placed to cover the opening from the heat-exchanger-room-side of the partition plate and heat-releasing fins projecting from the main plate to the blower fan side, and a portion of the main plate comes into contact with the heat-generating element via the opening. The greater the amounts of heat transferred from the heat-generating element the heat-releasing fins, the larger the heat-releasing fins.

Abstract: A wiper blade includes a wiper strip, a backing, a blade holder coupled to the wiper arm, and two opposed cases arranged at two longitudinal ends of the blade holder. The blade holder includes a blade holding portion, which surrounds a base portion of the wiper strip and the backing at a longitudinally central portion of the wiper strip and the backing. The blade holding portion restricts movement of the wiper strip and the backing in a direction orthogonal to the longitudinal direction. Each case includes a case holding portion that surrounds the base portion of the wiper strip and the backing. The case holding portion restricts movement of the wiper strip and the backing in a direction orthogonal to the longitudinal direction.

Abstract: A wiper for a vehicle includes an elongated wiper strip, a backing extending in the longitudinal direction of the wiper strip, and a blade holder for holding the wiper strip and the backing. The blade holder includes a pair of side surfaces that face in opposite directions. The wiper also includes a coupling member and a wiper arm. The coupling member has a pair of side walls, which face the corresponding side surfaces, and is attached to the blade holder. The wiper arm has a distal coupling portion attached to the coupling member. When the distal coupling portion is attached to the coupling member, side cover walls of the distal coupling portion are each engaged with the corresponding side wall of the coupling member.

Abstract: A wiper blade assembly which includes a blade, at least one backing which is fitted into an attachment groove of the blade, and an elongated holder member which is interconnected to the blade.

Abstract: A wiper blade includes a wiper strip having an elongated retained portion, a backing, and a case, which retains therein the retained portion and the backing. The cap is attached to at least one of the ends in the longitudinal direction of the backing or to at least one of the ends in the longitudinal direction of the case. The interior space of the cap communicates with the interior space of the case. The cap has a rubber insertion hole that opens to the outside of the cap. The retained portion can enter the interior of the cap via the rubber insertion hole.

Abstract: In a connecting member, a base member includes an installation portion, to which a hook of a wiper arm configured into a U-shape form is adapted to be installed after installation of the base member to a wiper blade. A lock member is rotatably connected to the base member and is adapted to be engaged with an arcuate outer peripheral surface of the hook after installation of the hook to the installation portion. The lock member includes an engaging portion, which is adapted to be engaged with the arcuate outer peripheral surface of the hook to exert a resilient force against the arcuate outer peripheral surface of the hook. The resilient force of the engaging portion is exerted as a rotational force in a locking direction of the lock member against the arcuate outer peripheral surface of the hook.

Abstract: A wiper blade includes a wiper strip, a backing, a blade holder coupled to the wiper arm, and two opposed cases arranged at two longitudinal ends of the blade holder. The blade holder includes a blade holding portion, which surrounds a base portion of the wiper strip and the backing at a longitudinally central portion of the wiper strip and the backing. The blade holding portion restricts movement of the wiper strip and the backing in a direction orthogonal to the longitudinal direction. Each case includes a case holding portion that surrounds the base portion of the wiper strip and the backing. The case holding portion restricts movement of the wiper strip and the backing in a direction orthogonal to the longitudinal direction.

Abstract: A wiper for a vehicle includes an elongated wiper strip, a backing extending in the longitudinal direction of the wiper strip, and a blade holder for holding the wiper strip and the backing. The blade holder includes a pair of side surfaces that face in opposite directions. The wiper also includes a coupling member and a wiper arm. The coupling member has a pair of side walls, which face the corresponding side surfaces, and is attached to the blade holder. The wiper arm has a distal coupling portion attached to the coupling member. When the distal coupling portion is attached to the coupling member, side cover walls of the distal coupling portion are each engaged with the corresponding side wall of the coupling member.

Abstract: A wiper blade assembly which includes a blade, at least one backing which is fitted into an attachment groove of the blade, and an elongated holder member which is interconnected to the blade.

Abstract: A wiper blade includes a wiper strip having an elongated retained portion, a backing, and a case, which retains therein the retained portion and the backing. The cap is attached to at least one of the ends in the longitudinal direction of the backing or to at least one of the ends in the longitudinal direction of the case. The interior space of the cap communicates with the interior space of the case. The cap has a rubber insertion hole that opens to the outside of the cap. The retained portion can enter the interior of the cap via the rubber insertion hole.

Abstract: In a connecting member, a base member includes an installation portion, to which a hook of a wiper arm configured into a U-shape form is adapted to be installed after installation of the base member to a wiper blade. A lock member is rotatably connected to the base member and is adapted to be engaged with an arcuate outer peripheral surface of the hook after installation of the hook to the installation portion. The lock member includes an engaging portion, which is adapted to be engaged with the arcuate outer peripheral surface of the hook to exert a resilient force against the arcuate outer peripheral surface of the hook. The resilient force of the engaging portion is exerted as a rotational force in a locking direction of the lock member against the arcuate outer peripheral surface of the hook.

Abstract: A lever assembly holds a wiper strip, which directly wipes a wiping surface. The lever assembly includes a plurality of levers, which are connected together in tournament style. An axial length of the lever assembly is shorter than an axial length of the wiper strip. A cover member receives the lever assembly, and opposed ends of the cover member hold the wiper strip. The cover member includes a plurality of cover portions, which are formed separately from one another.

Abstract: A wiper blade of a wiper system of a vehicle includes a blade rubber, two backing plates, a holder and a resilient fin. The backing plates are received in backing grooves of the blade rubber. The holder is rotatably connected to a wiper arm of the wiper system and detachably holds the blade rubber, which has the backing plates. The resilient fin is connected to the holder and limits lifting of the wiper blade from a windshield surface of the vehicle when the vehicle is running.

Abstract: A lever assembly is connected to a wiper arm and holds a wiper strip together with a backing plate, which is installed in the wiper strip. The lever assembly includes a plurality of levers. Each lever has a finned portion, in which a fin is integrally formed. The finned portion of each lever forms a mountain fold that has a top ridge. The top ridge of the lever is offset from the center line of the wiper strip on one side of the center line of the wiper strip in a transverse direction that is perpendicular to the center line of the wiper strip. The fin is formed in the finned portion of the lever on the other side of the center line of the wiper strip.