Abstract: A light emitting diode comprising an LED chip having a light emitting layer made of a nitride compound semiconductor and a light transmitting resin that includes a fluorescent material which absorbs at least a part of light emitted by the LED chip and emits light of a different wavelength, wherein the fluorescent material includes a fluorescent particles of small particle size and a fluorescent particles of large particle size, the fluorescent particles of large particle size being distributed in the vicinity of the LED chip in the light transmitting resin to form a wavelength converting layer, the fluorescent particles of small particle size being distributed on the outside of the wavelength converting layer in the light transmitting resin.

Abstract: A semiconductor device comprising a semiconductor element and a support member having a recess for housing the semiconductor element is disclosed. The support member includes lead electrodes and a support part holding the lead electrodes so that a surface of tip portions of the lead electrodes are exposed in a bottom of the recess. A main surface of the support member has at least a first main surface disposed adjacent to the recess and a second main surface disposed adjacent to the first main surface. The second main surface preferably has a protrusion and a further recess. The protrusion preferably forms an outer wall around a depression. The semiconductor device having this configuration has excellent and accurate positioning and can be strongly bonded with other members. The semiconductor device can also be obtained with a high process yield.

Abstract: The present invention provides an adsorption filter, comprising: at least one thin plate honeycomb filtering medium carrying a gas-adsorbing medium thereon; and a filter case housing the honeycomb filtering medium therein, wherein the thin plate honeycomb filtering medium is disposed in the filter case in such a manner as to make a series of V configurations with respect to a ventilation direction. Also disclosed is a method for manufacturing the adsorption filter.

Abstract: The present invention provides a metal gasket disposed between a cylinder head and a cylinder block, which includes: a thin metal plate having first opening; first elastic metal substrate; second elastic metal substrate; and at least one foamed rubber layer, wherein each of the first and second elastic metal substrates have second opening and a bead formed on a peripheral portion of the opening, wherein the thin metal plate was disposed between the beads of the first and second elastic metal substrates, wherein the at least one foamed rubber layer is provided by a process including foaming a pre-foamed layer including a pre-foamed composition, wherein the pre-foamed layer has a thickness of 15 to 50 ?m and a foaming factor of 2 to 4.

Abstract: The present invention provides a fluorescent material comprising a light-storing first phosphor that at least partially converts energy emitted by an excitation source to a first emission spectrum that is different from the energy, and a second phosphor that at least partially converts the first emission spectrum to a second emission spectrum that is different from the first emission spectrum; a lamp equipped with such a fluorescent material; a light-emitting device that produces a whitish afterglow, comprising such a fluorescent material for converting the emission by an LED chip; and a display unit comprising a display equipped with a plurality of such light-emitting devices.

Abstract: A method for manufacturing a chemical filter with a corrugated honeycomb structure is disclosed. The method comprises coating or impregnating a fibrous paper containing ion-exchange fiber with a slurry mixture of an ion-exchange resin powder and an adhesive to obtain a paper supporting ion-exchange resin powder and applying the paper supporting ion-exchange resin powder to a corrugating process.

Abstract: The chemical filter supporting an ion-exchange resin comprising a fiber supporting body containing ion-exchange fiber and ion-exchange resin powder which is supported on the fiber supporting body is provided. The chemical filter possesses a large ion-exchange capacity per unit volume and exhibits high initial performance of eliminating ionized gaseous pollutants and excellent durability of the elimination performance.

Abstract: The present invention provides a perfluoroelastomer molded article comprising a perfluoroelastomer that contains a copolymerization unit derived from a monomer mixture comprising: a perfluoroolefin monomer; a perfluorovinyl ether monomer selected from the group consisting of a perfluoro(alkyl vinyl) ether, a perfluoro-(alkoxyl vinyl) ether and a mixture thereof; and a cure site monomer, wherein the molded article has a surface layer portion that has been crosslinked with a curing agent. Also disclosed are a method for producing the perfluoroelastomer molded article and a rubber material comprising the perfluoroelestomer molded article.

Abstract: In light emitting devices of the prior art, there has been such cases that the device characteristics are insufficient, such as uneven forward voltage (Vf) within a wafer and variability of Vf with the lapse of driving time. The present invention is directed to a nitride semiconductor device comprising an active layer provided between an n-type contact layer that has an n electrode and a p-type contact layer that has a p electrode. The nitride semiconductor device comprises at least a first n-side layer, a second n-side layer, a third n-side layer and a fourth n-side layer formed in this order from the n-type contact layer between the n-type contact layer and the active layer, while at least the second n-side layer and the fourth n-side layer each have n-type impurity, and the concentration of the n-type impurity in at least the second n-side layer and the fourth n-side layer is higher than the concentration of the n-type impurity in the first n-side layer and the third n-side layer.

Abstract: An opposed terminal structure including a supporting substrate, a first terminal, a nitride semiconductor with a light-emitting layer, and a second terminal. The second terminal forms an opposed terminal structure with the first terminal, which can be formed in a variety of patterns.

Abstract: To provide a light emitting device having a high reliability wherein no resin burrs occur, The semiconductor device comprises a semiconductor element, a package having a recess for housing the semiconductor element and a mold member for sealing the semiconductor element in the recess and the package comprises lead electrodes and a package support part supporting the lead electrodes so that main surfaces of the tip portions of the lead electrodes are exposed from the bottom surface of the recess.

Abstract: The present invention provides a combination metal gasket that is formed by fitting a ring-shaped metal base elastic structure in at least one trough portion of two trough portions of a ring-shaped metal gasket that has an S-shaped longitudinal cross section. The combination metal gasket does not demonstrate the plastic deformation even when a large compressive load is applied and is not likely to be destroyed even when a pressure of a fluid being sealed is high; that is, stable sealing properties are exhibited.

Abstract: An LED indication lamp has desired luminous intensity distribution characteristics without need for any light-emitting diode of a special shape. The LED indication lamp comprising a plurality of light-emitting diodes and having specified luminous intensity distribution characteristics is further provided with a condenser lens. The light-emitting diodes are arranged in a pattern corresponding to a luminous intensity distribution pattern determined according to the luminous intensity distribution characteristics. The light-emitting diodes thus arranged and the condenser lens are arranged so that light emitted from the light-emitting diodes in the luminous intensity distribution pattern through the condenser lens satisfies the luminous intensity distribution characteristics.