Abstract: An optical system includes a display, a backlight configured to emit at least a light in a first wavelength range extending between about 400 nm and about 500 nm, and an optical film disposed adjacent the backlight and configured to absorb a light in a second wavelength range extending between about 415 nm to about 455 nm, wherein a ratio of the light in the second wavelength range transmitted by the optical film to the light in the first wavelength range transmitted by the optical film is less than or equal to 50%.

Abstract: A projection device includes: a plurality of light sources arranged in a first direction; a spatial modulation element that modulates incident light into image information and emits the image information; a lens that changes an optical path of light emitted from each of the plurality of light sources such that the light emitted from each light source reaches substantially the same region of an incident surface of the spatial modulation element; and a first reflective optical member that deflects the light emitted from the lens toward the spatial modulation element, the first reflective optical member having a shape that reflects light emitted from the lens so as to be incident on an arbitrary point on the incident surface of the spatial modulation element at a predetermined reference incident angle.

Abstract: An emitter contact layer, an emitter layer, a base layer, a p-type base layer, a collector layer, and a sub-collector layer are crystal-grown over a first substrate in this order with the main surface as the Group III polar surface. The emitter contact layer includes a nitride semiconductor that is made n-type at a relatively high concentration. The emitter layer includes a nitride semiconductor having a bandgap larger than that of the nitride semiconductor constituting the emitter contact layer. The base layer includes an undoped nitride semiconductor having a bandgap smaller than that of the nitride semiconductor constituting the emitter layer. The p-type base layer includes the same nitride semiconductor as the base layer and made p-type.

Abstract: A power conversion device includes: a first control unit and a second control unit that output a first control signal and a second control signal, respectively; a gate circuit that causes a control signal selected from the first control signal and the second control signal to pass through the gate circuit; and a drive circuit that drives a main circuit based on the control signal that passes through the gate circuit. When the second control signal is selected in the state where the first control signal passes through the gate circuit, the gate circuit interrupts the first control signal and causes the second control signal to pass through the gate circuit as an absolute value of an instantaneous value of an AC current decreases below a threshold current.

Abstract: The cutter unit of a lawn maintenance machine may include: a shaft; and an even number of cutter blades aligned in a left-right direction extending from the first portion away from a rotation axis. Each of the even number of cutter blades may be attached to the shaft in one of the at least three postures. A number of the cutter blades disposed to a right of a center position may be same as a number of the cutter blades disposed to a left of the center position. A disposition of the cutter blades in the right-left direction as viewed from the center position toward the right may be same as a disposition of the cutter blades in the right-left direction as viewed from the center position toward the left. The postures of two cutter blades being at a same distance from the center position may be same.

Abstract: A lawn maintenance machine may include: a pair of wheels configured to rotate on a ground; a handle unit configured to be gripped by a user while the lawn maintenance machine is moving; a working unit configured to work on the ground; an electric motor configured to drive the working unit; a fan configured to rotate by operation of the electric motor; a housing configured to support the working unit and housing the electric motor and the fan; and a wall disposed outside the housing and attached to the housing. The housing may have a connection opening which connects an inside and an outside of the housing and through which air flows by a rotation of the fan. The wall may be disposed to face the connection opening.

Abstract: A drying device includes a conveying unit to convey a medium to which liquid is discharged from a discharging head, a hot air blowing unit, a passage forming unit, and an adjusting unit. The hot air blowing unit includes a blowing unit, and a heating unit. The passage forming unit forms, between the hot air blowing unit and a region on a conveyance path of the conveying unit, a circulation path through which air blown from the hot air blowing unit is to be circulated. The adjusting unit adjusts an amount of air outside the circulation path that is supplied to the blowing unit. The circulation path includes an introduction portion, and an exhaust portion. The adjusting unit includes a movable member that changes an exhaust portion opening amount.

Abstract: A contact member that comes into contact with a surface of a developer carrier has a volume resistivity of 1014 ohm·cm or less, and a developer satisfies the following conditions: a rotating member and the contact member have a resistance value of 1.0×104 ohms or less, and a first resistance value ranges from 1.0×105 ohms to 1.0×108 ohms as measured in a state where the rotating member is stopped and the developer is located between the rotating member and the contact member, and a second resistance value is in the range of the first resistance value and is 40% or more with respect to the first resistance value, as measured in a state where the rotating member is rotated at 200 mm/s with respect to the contact member and the developer is located between the rotating member and the contact member.

Abstract: One aspect relates to a light-emitting element having a layer forming a resonance mode. The light-emitting element includes a structure body constituted by a substrate and a semiconductor laminate body including a first cladding layer, a second cladding layer, an active layer, and a resonance-mode forming layer including a basic layer and modified refractive index regions. A laser light output region and a metal electrode film are on opposing surfaces of the structure body. The metal electrode film includes a first layer forming ohmic contact with the structure body, a second layer reflecting light from the resonance-mode forming layer, a third layer, and a fourth layer for solder bonding. The third layer has a different composition from the second layer and the fourth layer, and has a lower diffusion degree than the second layer and the fourth layer to that of a solder material.

Abstract: A field-effect transistor includes a channel layer made of a compound semiconductor and formed on a substrate; a gate electrode formed on the channel layer; and a source electrode and a drain electrode, which are formed with the gate electrode interposed therebetween. At least one of the source electrode and the drain electrode is formed on a substrate side of the channel layer.

Abstract: This semiconductor device includes a substrate, a buffer layer formed on the substrate, a first semiconductor layer formed on the buffer layer, a second semiconductor layer formed on the first semiconductor layer, and a channel layer and a barrier layer formed on the second semiconductor layer. The substrate includes a nitride semiconductor doped with impurities to have semi-insulating properties or high resistance, the buffer layer includes GaN, the first semiconductor layer includes GaN doped with an acceptor, and the second semiconductor layer includes AlGaN.

Abstract: A mobile terminal includes an input unit that is capable of receiving input of a dispatch request and a destination and a position determiner that is capable of obtaining a terminal position which is its own current position. In accordance with the dispatch request, an autonomous vehicle is designated as a vehicle that is to be dispatched. The autonomous vehicle includes an autonomous driving controller that performs driving control so as to track the mobile terminal based on the terminal position while on its way to pick up the user.

Abstract: A first semiconductor layer, a second semiconductor layer, a channel layer, a barrier layer, and a third semiconductor layer are crystal-grown in this order on a first substrate in the +c axis direction, a second substrate is bonded to the side of the barrier layer of the first substrate, and after that, the first substrate is removed, and the first semiconductor layer is selectively thermally decomposed by heating.

Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer including polymers and liquid crystal molecules, and a light-emitting element. The first substrate includes a transparent substrate, a scanning line, a signal line crossing the scanning line, a switching element electrically connected to the scanning line and the signal line, an organic insulating film overlapping the switching element, and a pixel electrode electrically connected to the switching element. A thickness of the organic insulating film located between the transparent substrate and the pixel electrode is less than a thickness of the organic insulating film overlapping the switching element.

Abstract: According to an aspect, a detection device includes: a substrate; a photodiode in which a lower electrode, a semiconductor layer, and an upper electrode are stacked on the substrate in the order as listed; a transistor provided in the photodiode; an insulating layer provided between layers of the substrate and the photodiode; and a planarizing layer covering the insulating layer. The insulating layer comprises a projecting portion that projects toward the photodiode in a direction orthogonal to the substrate. The planarizing layer has a contact hole provided in a position that is below the photodiode and overlaps the projecting portion of the insulating layer. The photodiode is provided on an upper side of the planarizing layer and is also provided so as to cover the contact hole. The lower electrode of the photodiode is electrically coupled to the transistor at a bottom of the contact hole.

Abstract: A display device includes a front plate, a display panel disposed on a back surface side of the front plate, a backlight disposed on a back surface side of the display panel, a housing that accommodates the backlight, a support member disposed on the back surface side of the front plate and outside the housing, the support member supporting the front plate, and a clamping member clamping an outer edge of the front plate and an outer edge of the support member.

Abstract: According to one embodiment, a display device including a first substrate including a first pixel and a second pixel, a second substrate, a liquid crystal layer containing polymer and liquid crystal molecules, and a light emitting element, wherein the second pixel is located between the light emitting element and the first pixel, the first substrate includes a switching element including a semiconductor layer arranged in the first pixel, a pixel electrode, and a first light shielding portion arranged in the second pixel and being adjacent to the semiconductor layer, the first light shielding portion is located between the semiconductor layer and the light emitting element in planar view and located on a side closer to the first pixel than a center of the second pixel.

Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer including polymers and liquid crystal molecules, and a light-emitting element. The first substrate includes a transparent substrate, a scanning line, a signal line crossing the scanning line, a switching element electrically connected to the scanning line and the signal line, an organic insulating film overlapping the switching element, and a pixel electrode electrically connected to the switching element. A thickness of the organic insulating film located between the transparent substrate and the pixel electrode is less than a thickness of the organic insulating film overlapping the switching element.

Abstract: A display device includes: an array substrate; a counter substrate; a liquid crystal layer between the array substrate and the counter substrate; and a light source. The array substrate includes: signal lines; scanning lines; a grid-shaped organic insulating layer that extends along the scanning lines and the signal lines and overlies the scanning lines and the signal lines; pixel electrodes provided in regions surrounded by the scanning lines and the signal lines; and a first orientation film that covers the pixel electrodes. A portion of each pixel electrodes overlaps a slant surface of the organic insulating layer. The counter substrate includes: a common electrode overlapping the respective pixel electrodes; a protective film that has an insulating capability and a light transmitting capability and covers a side of the common electrode facing the array substrate at least in the display region; and a second orientation film that covers the protective film.

Abstract: A first regrowth layer and a second regrowth layer comprising GaAs having high resistance are regrown on a surface of an etching stop layer exposed to the bottom of a first groove and a second groove, and then n-type InGaAs is regrown on the first regrowth layer and the second regrowth layer, whereby a source region and a drain region configured to make contact with a channel layer are formed in the first groove and the second groove respectively.