Abstract: An optical functional film for a head-up display according to the present disclosure includes (A) two or more phase difference layers and (B) an adhesive layer. The adhesive layer is adjacent to at least one phase difference layer, and an absolute value of difference between a refractive index of the adhesive layer and a refractive index of the phase difference layer adjacent to the adhesive layer in a direction of a fast axis is less than 0.060.

Abstract: The present disclosure relates to an optical film includes (A) an optical functional layer and (B) a block layer, and (B) the block layer has a cured product of a resin composition containing (B-1) a thermoplastic resin and (B-2) an ultraviolet curable resin.

Abstract: The present disclosure relates to an optical laminate for a head-up display, including (A) at least one polyvinyl acetal resin layer having a photoelastic coefficient (PeA) in the range of the following Expression (1) and (B) at least one optical functional layer. Further, the present disclosure relates to functional glass for a head-up display including the optical laminate. and a head-up display including: the optical laminate or the functional glass. PeA ? 4.0 ? × ? 10 ? 11 Pa ? 1 ...

Abstract: A connection structure of an electrical junction box includes: a first housing which is fixed to a vehicle and in which a through hole is formed; and a terminal block that is inserted into the through hole, has a conductor, and is supported by the first housing, wherein the conductor includes a first terminal portion placed on one side of the through hole in a penetrating direction in which the through hole penetrates the first housing, and a second terminal portion that protrudes from the first housing toward the other side in the penetrating direction and that is connected to an electric wire.

Abstract: A light emitting device includes: a first layer in which a first light emitting element is disposed; a second layer stacked on the first layer and including a second light emitting element that at least partially overlaps the first light emitting element as viewed in a light emitting direction perpendicular to a light emitting surface of the first light emitting element; and a control substrate on which the first layer is stacked and that controls light emission of the first light emitting element and the second light emitting element. The first layer includes a first surface facing the second layer in the light emitting direction, a second surface facing the control substrate in the light emitting direction, and a first opening formed from the first surface to the second surface. The second light emitting element and the control substrate are electrically connected together through the first opening.

Abstract: The present disclosure relates to an optical functional film for a head-up display, having two or more slow axis zones different in slow axis angles in the same plane, wherein a maximum difference between slow axis angles is more than 5° and less than 30°.

Abstract: A semiconductor element unit includes a semiconductor element; and a first electrode having a flat first electrode mounting surface whose surface roughness is less than or equal to 10 [nm] and forming eutectic bonding with the semiconductor element in a part different from the first electrode mounting surface. A semiconductor element unit supply substrate includes one or more semiconductor element units. A semiconductor packaging circuit includes the semiconductor element unit.

Abstract: A light-emitting thyristor includes a first semiconductor layer of a P type, a second semiconductor layer of an N type arranged adjacent to the first semiconductor layer; a third semiconductor layer of the P type arranged adjacent to the second semiconductor layer; and a fourth semiconductor layer of the N type arranged adjacent to the third semiconductor layer. A part of the first semiconductor layer is an active layer adjacent to the second semiconductor layer. A dopant concentration of the active layer is higher than or equal to a dopant concentration of the third semiconductor layer. A thickness of the third semiconductor layer is thinner than a thickness of the second semiconductor layer. A dopant concentration of the second semiconductor layer is lower than the dopant concentration of the third semiconductor layer.

Abstract: An electrical connection box includes a housing member, a first cover member, a second cover member, a hinge structure between the first and the second cover members, and a detachment prevention structure that disables detachment of the second cover member from the first cover member. The hinge structure includes a rotation shaft of the first cover member, a bearing of the second cover member, and a through hole in the first cover member. The through hole allows the bearing to be inserted from a free end and move in a direction that intersects an insertion direction of the bearing and is perpendicular to the axial direction of the rotation shaft to be fitted to the rotation shaft. The detachment prevention structure includes a rotational retaining section of the bearing and a retainer of the housing member.

Abstract: The present disclosure relates to an image display system includes an optical laminate including an optical layer that changes the polarization direction of incident light by 90° and at least one transparent resin substrate; display-image projection means for emitting S polarized light to the optical laminate; and a polarized-light control unit including a P-polarized-light control unit that transmits S polarized light and blocks P polarized light or an S-polarized-light control unit that changes the polarization direction of incident light by 90° and blocks S polarized light, in which S polarized light reflected on the optical laminate is incident on the polarized-light control unit.

Abstract: The present disclosure relates to an optical film includes (A) an optical functional layer and (B) a block layer, and (B) the block layer has a cured product of a resin composition containing (B-1) a thermoplastic resin and (B-2) an ultraviolet curable resin.

Abstract: A composite integrated film includes a base member thin film having a base member first surface and a base member second surface facing each other, one or more penetration parts penetrating the base member first surface and the base member second surface of the base member thin film, one or more electrodes each including an electrical path part formed between the base member first surface and the base member second surface via the penetration part and an electrode surface in a planar shape formed on the base member second surface's side, and one or more elements provided on the base member first surface of the base member thin film and electrically connected to the electrodes, wherein the electrode surface and the base member second surface form a same flat surface.

Abstract: A connection structure of an electrical junction box includes: a first housing which is fixed to a vehicle and in which a through hole is formed; and a terminal block that is inserted into the through hole, has a conductor, and is supported by the first housing, wherein the conductor includes a first terminal portion placed on one side of the through hole in a penetrating direction in which the through hole penetrates the first housing, and a second terminal portion that protrudes from the first housing toward the other side in the penetrating direction and that is connected to an electric wire.

Abstract: An electrical connection box includes a housing member, a first cover member, a second cover member, a hinge structure between the first and the second cover members, and a detachment prevention structure that disables detachment of the second cover member from the first cover member. The hinge structure includes a rotation shaft of the first cover member, a bearing of the second cover member, and a through hole in the first cover member. The through hole allows the bearing to be inserted from a free end and move in a direction that intersects an insertion direction of the bearing and is perpendicular to the axial direction of the rotation shaft to be fitted to the rotation shaft. The detachment prevention structure includes a rotational retaining section of the bearing and a retainer of the housing member.

Abstract: A light-emitting thyristor includes a first semiconductor layer of a first conductivity type; a second semiconductor layer of a second conductivity type arranged adjacent to the first semiconductor layer; a third semiconductor layer of the first conductivity type arranged adjacent to the second semiconductor layer; and a fourth semiconductor layer of the second conductivity type arranged adjacent to the third semiconductor layer. The first semiconductor layer includes an active layer adjacent to the second semiconductor layer, the second semiconductor layer includes a first layer adjacent to the active layer and a second layer arranged between the first layer and the third semiconductor layer, and the first layer has a band gap wider than a band gap of the active layer and a band gap of the second layer.

Abstract: A light-emitting thyristor includes a first semiconductor layer of a P type, a second semiconductor layer of an N type arranged adjacent to the first semiconductor layer; a third semiconductor layer of the P type arranged adjacent to the second semiconductor layer; and a fourth semiconductor layer of the N type arranged adjacent to the third semiconductor layer. A part of the first semiconductor layer is an active layer adjacent to the second semiconductor layer. A dopant concentration of the active layer is higher than or equal to a dopant concentration of the third semiconductor layer. A thickness of the third semiconductor layer is thinner than a thickness of the second semiconductor layer. A dopant concentration of the second semiconductor layer is lower than the dopant concentration of the third semiconductor layer.

Abstract: The present disclosure relates to an image projection device includes a display unit to emit a display light representing a display image in a form of either of s-polarized light and p-polarized light and an optical laminate that the display light emitted from the display unit is incident on. The optical laminate includes at least two substrates and an optical layer to change a polarization direction of incident light by 90°. The display unit has a polarization direction converter capable of freely switching between s-polarized light and p-polarized light.

Abstract: A light-emitting thyristor includes a first semiconductor layer of a first conductivity type; a second semiconductor layer of a second conductivity type arranged adjacent to the first semiconductor layer; a third semiconductor layer of the first conductivity type arranged adjacent to the second semiconductor layer; and a fourth semiconductor layer of the second conductivity type arranged adjacent to the third semiconductor layer. The first semiconductor layer includes an active layer adjacent to the second semiconductor layer, the second semiconductor layer includes a first layer adjacent to the active layer and a second layer arranged between the first layer and the third semiconductor layer, and the first layer has a band gap wider than a band gap of the active layer and a band gap of the second layer.

Abstract: An optical laminate structure includes a light control laminate having at least one light reflection layer, a first quarter wave plate laminated on one of surfaces of the light reflection layer, and a second quarter wave plate laminated on another surface of the light reflection layer. The light reflection layer includes a right-handed circularly polarized light reflection layer or a left-handed circularly polarized light reflection layer, and an angle formed by a polarization axis of the S-polarized light or P-polarized light incident from a position inclined from an axis perpendicular to a surface of the light control laminate by 45° or more and 65° or less and a slow axis of the first quarter wave plate on a side to which the S-polarized light or P-polarized light is incident is 5° or more and less than 45°.

Abstract: The present disclosure provides an intermediate film for laminated glass formed by laminating a polyvinyl acetal resin layer, and an inorganic fine particle-containing acrylic resin layer containing inorganic fine particles and an acrylic resin.