Abstract: A spark plug has a central electrode and a plurality of peripheral electrodes. The central electrode has a proximal portion and a distal portion. The distal portion of the central electrode has a circular cross-section with a longitudinal axis and terminates in a distal end. Each peripheral electrode has a lower portion and an upper portion. Each upper portion has a distal-most point. Each distal-most point is disposed in a central plane within which the longitudinal axis of the distal portion of the central electrode is wholly disposed. The cross-section of each upper portion taken along its central plane defines a convex outer side and a non-convex inner side. Each convex outer side has a curved surface which is tangent to a plurality of tangent planes, all of which intersect the longitudinal axis of the distal portion of the central electrode at points at or above the distal end of the distal point of the central electrode.

Abstract: A direct current discharge lamp with an anode (10) and a cathode (12) that are arranged opposite one another at a predetermined distance (r) inside a discharge vessel (14) filled with a filling gas, it being possible to apply electric power (P) to the anode (10) and the cathode (12) in order to produce a gas discharge. At least the predetermined distance (r) between the anode (10) and the cathode (12), the electric power (P) and a geometry of the anode (10) are adapted to one another in such a way that a region (22) of a surface (24) of the anode (10) facing the cathode (12) is free flowing in the heated state of the direct current discharge lamp.

Abstract: A light-emitting device includes a substrate, and a light-emitting element including a lower electrode, a light-emitting function layer, and an upper electrode that are formed on the substrate in that order. At least one auxiliary electrode in a strip shape extends in a first direction on and in contact with the upper electrode. The auxiliary electrode has a cross section taken along the direction intersecting the first direction, having a shape including a tapered portion. The light-emitting device also includes a barrier layer covering the auxiliary electrode and the upper electrode. The barrier layer prevents water and oxygen from penetrating into the light-emitting element.

Abstract: A top emission OLED includes a driving TFT including a channel region and source and drain electrodes. A power supply, a ground line, and a light emitting diode are electrically coupled to the TFT and an auxiliary electrode is electrically coupled to the ground line and to the source electrode of the driver transistor. The auxiliary electrode resides between the light emitting diode and the channel region of the driver transistor and is configured to shield the channel region of the driver transistor from an electric field generated by the light emitting diode.

Abstract: A fluid channeling device including a channeling body, an axial transfer channel, and a radial outlet channel. The channeling body includes first and second annular body sections spaced axially apart and a tubular body section extending between the first and second body sections. The axial transfer channel is defined axially through the channeling body, and is configured to fluidly couple a first compression assembly with a second compression assembly. The radial outlet channel is defined radially through the channeling body and is configured to fluidly couple the second compression assembly with an outlet.

Abstract: Compressor (1) having a region of pressure intermediate between discharge pressure and suction pressure (especially, crank chamber (10)), characterized in that a valve mechanism (21) is provided for introducing discharge gas into the region of intermediate pressure so as to render constant the difference between intermediate pressure and suction pressure. A compressor structure is provided which can stably introduce a mixture of discharge gas and refrigerating machine oil into the crank chamber without using pressure reducing means such as an aperture and in a manner easy to form a passageway, thereby improving the lubricity of rolling part and slide part in the crank chamber.

Abstract: A PDP and a manufacturing method for the PDP are provided, the PDP being capable of suppressing discharge delay due to improved discharge properties of a protective layer, and exhibiting superior image display performance despite having a high-definition cell structure. A magnesium oxide powder layer (16) is formed by distributing magnesium oxide particles (16a) flatly on a surface layer (8). Each of the magnesium oxide particles (16a) includes halogen atoms at and in a vicinity of the surface thereof. The magnesium oxide particles (16a) are manufactured such that the halogen atoms exist particularly at the surface of each of magnesium oxide particles (16a) through to a depth of 4 nm or less toward the core of each of the magnesium oxide particles (16a).

Abstract: A surface light source apparatus with dual-side emitting light includes a transparent cathode structure, a transparent anode structure, a fluorescent layer and a low-pressure gas layer. The transparent cathode structure and the transparent anode structure are opposite to each other and respectively a surface structure. The fluorescent layer is located between the transparent cathode structure and the transparent anode structure. The low-pressure gas layer fills a space between the transparent cathode structure and the transparent anode structure and functions to induce the cathode for evenly emitting electrons. In addition, the electron mean free path of the low-pressure gas layer allows at least sufficient electrons to directly impact the fluorescent layer under an operation voltage.

Abstract: An electron tube of the present invention includes: a vacuum vessel including a side tube portion made of glass and a plate-like member blocking one opening of the side tube portion and made of glass; a first metal film provided on an end face of the side tube portion; a second metal film arranged facing the first metal film and provided on a marginal part of a face at a vacuum side of the plate-like member; a third metal film provided on at least one of an outer wall face of the side tube portion adjacent to the end face and a side face of the plate-like member adjacent to the marginal part; and a metal member made of a low-melting-point metal, for sealing a gap between the side tube portion and the plate-like member while contacting the first metal film, the second metal film, and the third metal film.

Abstract: An electron emission light-emitting device includes a cathode structure, an anode structure, a fluorescent layer, and a low-pressure gas layer. The fluorescent layer is located between the cathode structure and the anode structure. The low-pressure gas layer is filled between the cathode structure and the anode structure, having a function of inducing the cathode to emit electron uniformly. The low-pressure gas layer has an electron mean free path, allowing at least sufficient amount of electrons to directly impinge the fluorescent layer under an operation voltage.