47results about How to "Improved service life characteristics" patented technology

A nitride semiconductor laser element, comprises a substrate, a nitride semiconductor layer laminated on said substrate and having a ridge on its surface, a first protective film that covers said nitride semiconductor layer, and an electrode form on the ridge and the first protective film, wherein the first protective film covers part of the nitride semiconductor layer surface in a contact state, and covers from the periphery around the base of the ridge to the side faces of the ridge in a non-contact state, resulting in a cavity being disposed from said ridge side faces to the ridge base periphery.

An exemplary embodiment of the present specification provides an organic electroluminescence device including: an anode; a cathode; a light emitting layer provided between the anode and the cathode; and an electron transporting layer provided between the cathode and the light emitting layer, in which the electron transporting layer includes a first electron transporting material and a second electron transporting material, the first electron transporting material is an organic material including a monocyclic or polycyclic ring which includes an N-containing six-membered ring, the second electron transporting material is an organic material including a five-membered hetero ring which includes at least one heteroatom of N, O, and S, or a cyano group, and a dipole moment of the second electron transporting material is larger than a dipole moment of the first electron transporting material.

The present invention provides an organic light emitting device including a compound and an organic material layer composed of one more layers including a first electrode, a second electrode and a light emitting layer disposed between the first electrode and the second electrode, in which one or more layers of the organic material layer include the compound of Formula 1 or a compound in which a heat curable or photo curable functional group is introduced into the above-described compound.

A multilayer ceramic capacitor includes a laminate constituted by internal electrode layers of different polarities alternately layered via dielectric layers, wherein the multilayer ceramic capacitor is such that the dielectric layers contain ceramic grains whose primary component is BaTiO3, the ceramic grains contain Mo, Mn, rare earth R, and at least one of V and W, and the average valence number of Mo in the ceramic grains is 4.50 to 5.50. The multilayer ceramic capacitor can offer excellent service life characteristics and sufficiently suppress leak current even when the thickness of the dielectric layer is 0.8 μm or less.

The invention relates to an organic electroluminescent device and a method of manufacturing the same and a display device and a method of manufacturing the same, wherein the organic electroluminescent device is provided with a substrate, and a lower electrode, a luminous functional layer including an organic luminous layer and an upper electrode laminated on the substrate, thereby emitting the light generated in the organic luminous layer from one side of the upper electrode. The lower electrode comprises a reflecting material layer made of metals, an oxide film arranged on the surface of thereflecting material layer and a metal film arranged on the oxide film. In the surface luminous organic electroluminescent device, luminous efficiency is increased and driving voltage is reduced. Therefore, service life performance of the organic electroluminescent device is improved.

An electrolytic capacitor comprises a capacitor element consisting of strips of metal foil separated by insulating paper, and liquid electrolyte. The insulating paper contains 500 ppm or less cation. The electrolytic capacitor has low impedance, preferred low-temperature characteristics and a long service life, and it is capable of operating at high temperature.

The present invention provides a binder for lithium ion secondary battery electrodes that is obtained by emulsion polymerization of an ethylenically unsaturated monomer in an aqueous medium in the presence of a surfactant, the ethylenically unsaturated monomer being composed, with respect to the total mass of the ethylenically unsaturated monomer, of 15% by mass to 70% by mass of styrene, 1% by mass to 10% by mass of an N atom-containing ethylenically unsaturated monomer, 1% by mass to 10% by mass of an ethylenically unsaturated carboxylic acid, 0.1% by mass to 5% by mass of an internal crosslinking agent, and 22% by mass to 82.9% by mass of another ethylenically unsaturated monomer that is copolymerizable with these substances, and has a glass transition temperature of −55° C. to 30° C.

The present invention provides an organic light emitting device including a dibenzothiophene-based compound and an organic material layer composed of one more layers including a first electrode, a second electrode and a light emitting layer disposed between the first electrode and the second electrode, in which one or more layers of the organic material layer include the dibenzothiophene-based compound of Formula 1 or a compound in which a heat curable or photo curable functional group is introduced into the dibenzothiophene-based compound.

A lubricating oil composition containing a lubricating base oil and on the basis of the total mass of the composition, (A) a boron-containing ashless dispersant in an amount of 100 to 500 ppm by mass as boron, (B) a phosphorous additive in an amount of 300 to 800 ppm by mass as phosphorus, (C) an amide- and / or imide-based friction modifier in an amount of 1 to 4 percent by mass, and (D) an alkali metal- and / or alkaline earth metal-based detergent in an amount of 100 to 300 ppm by mass as metal, and having a 40° C. kinematic viscosity of 30 mm2 / s or lower is provided. The lubricating oil composition, which has a low viscosity to improve fuel efficiency, also has superior anti-wear, anti-seizure, and anti-shattering properties, even when the composition is degraded by oxidation or by the elution of compounds from sealing materials after long term use.

The present invention provides a cathode active material for a secondary battery, the cathode active material being a lithium cobalt-based oxide comprising doping element M, wherein particles of the lithium cobalt-based oxide contain the doping element M in an amount of 3,000 ppm or higher wherein the doping element M is uniform in concentration across a bulk portion covering the core side corresponding to 90 % of the radius from the core to the surface in the particle and present in a surficial portion at a concentration identical to or higher than in the bulk portion and has a concentrationgradient gradually decreasing from the surface of the particle in the core direction, the surficial portion covering a depth of 100 nm from the surface of the particle in the core direction.

Dielectric layers are prepared using a dielectric material that contains a ceramic powder having Ba, Ti, and additive element X which is solid-solubilized and is at least one element selected from the group consisting of Mo, Ta, Nb, and W, wherein the standard deviation of the ratio of the peak intensity of the additive element X (XKα) measured by STEM-EDX, and the sum of the peak intensity of the Ti and peak intensity of the Ba (BaLα+TiKα) measured by STEM-EDX, is less than 10.5% of the average ratio as measured at a total of five points including the three points that divide the maximum diameter of one grain of the ceramic powder into four equal parts, and two excluding the center point of the three points that divide the diameter crossing at right angles with the maximum diameter at its center point, into four equal parts.

The present specification relates to a fluorene-based compound of Formula 1, a coating composition comprising the fluorene-based compound of Formula 1, an organic light emitting device using the same, and a manufacturing method thereof.

Disclosed is a cathode of an all-solid state lithium-sulfur secondary battery, and a method for manufacturing the same. In particular, the cathode of the all-solid state lithium-sulfur secondary battery may comprise a graphene oxide connecting active material-carbon material complexes to improve electron transporting efficiency in the cathode, such that a battery capacity is improved.

The present specification relates to a polymer comprising a first unit represented by chemical formula 1 and a second unit represented by chemical formula 2, a coating composition comprising same, andan organic light emitting element formed using same.

A multilayer ceramic capacitor has a laminate including dielectric layers laminated alternately with internal electrode layers of different polarities, wherein the dielectric layer contains ceramic grains having Ba, Ti, and X (wherein X represents at least one type of element selected from the group consisting of Mo, Ta, Nb, and W) and a variation in the concentration distribution of X above in the ceramic grain is within ±5%. The multilayer ceramic capacitor can offer excellent service life characteristics even when the thickness of the dielectric layer is 0.8 μm or less, as well as excellent bias characteristics.

A multilayer ceramic capacitor includes a laminate constituted by internal electrode layers of different polarities alternately layered via dielectric layers, wherein the multilayer ceramic capacitor is such that the dielectric layers contain ceramic grains whose primary component is BaTiO3, the ceramic grains contain Mo, Mn, rare earth R, and at least one of V and W, and the average valence number of Mo in the ceramic grains is 4.50 to 5.50. The multilayer ceramic capacitor can offer excellent service life characteristics and sufficiently suppress leak current even when the thickness of the dielectric layer is 0.8 μm or less.

Disclosed herein is a double winding type electrode assembly constructed in a structure in which a cathode and an anode are opposite to each other while a separator is disposed between the cathode and the anode, wherein the electrode assembly is manufactured by preparing a plurality of cell units, each cell unit having a cathode sheet and an anode sheet, of a predetermined size, wound, while a separator is disposed between the cathode sheet and the anode sheet, each cell unit being elliptical in section, and sequentially winding the cell units while arranging the cell units on a long separator sheet.

A positive electrode active material for a secondary battery is provided. The positive electrode active material being a lithium cobalt-based oxide includes a doping element M. A lithium cobalt-based oxide particle containing the doping element M in an amount of 3,000 ppm or more, wherein in a bulk portion corresponding to 90% of a core side among the radius from a core of the particle to a surface thereof, the doping element M in the lithium cobalt-based oxide particle is contained at a constant concentration, and in a surface portion from the surface of the particle to 100 nm in a core direction, the doping element M is contained at a concentration equal to or higher than that in the bulk portion and has a concentration in which the concentration thereof is gradient gradually decreased in the core direction from the surface of the particle.

A nitride semiconductor laser element, comprises a substrate, a nitride semiconductor layer laminated on said substrate and having a ridge on its surface, a first protective film that covers said nitride semiconductor layer, and an electrode form on the ridge and the first protective film, wherein the first protective film covers part of the nitride semiconductor layer surface in a contact state, and covers from the periphery around the base of the ridge to the side faces of the ridge in a non-contact state, resulting in a cavity being disposed from said ridge side faces to the ridge base periphery.

A high-pressure discharge lamp is characterized by including a translucent airtight container having a discharging space in an internal portion, electrodes for causing discharge in the discharging space of the translucent airtight container, and an ionization medium sealed in the translucent airtight container and containing a metal halide and rare gas, the metal halide including at least one type of halides of thulium and holmium whose sealing ratio with respect to the total amount of sealed metal halides is not lower than 30 mass % and the rare gas is xenon at not lower than 3 atm at 25° C., and the high-pressure discharge lamp is characterized in that mercury and a metal halide for formation of lamp voltage are not substantially contained in the translucent airtight container.

An object of the present invention is to improve the service life of an organic light emitting element. In order to solve the above problem, a curable polymer according to the present invention includes a macromolecule including a main chain having a conjugating monomer and a side chain having a crosslinking group, and the macromolecule is doped with holes.

The present invention relates to an organic light emitting device comprising: an anode; a cathode; and a light emitting layer disposed between the anode and the cathode, in which a first organic material layer is included between the light emitting layer and the anode, the first organic material layer comprising a composition containing a compound of Chemical Formula 1 or a cured product thereof; and including a second organic material layer between the first organic material layer and the light emitting layer, the second organic material layer comprising a composition comprising a copolymer of Chemical Formula 2 or a cured product thereof, where all variables are described herein. [Chemical Formula 1] [Chemical Formula 2]

The invention belongs to the technical field of film separation, and specifically, relates to a high temperature-resisting filter pressing film for separating furfural, a preparation method thereof and application thereof in furfural separation. The high temperature-resisting filter pressing film for separating the furfural is prepared from the following raw materials: a film forming material, a solvent, a film forming additive, a dispersing agent, a plasticizing agent, a defoaming agent, a dehydrating agent, a high temperature-resisting protective agent, a compressive protective agent, accessories and the like. Primary experiment detection shows that the high temperature-resisting filter pressing film provided by the invention has better high temperature-resisting property and has good acid-base corrosion resistance at the same time; the high temperature-resisting filter pressing film has higher film flux, good machinability and good thermal stability, and has a very important application value in increasing the yield of the furfural and reducing film separation time; meanwhile, since the high temperature-resisting filter pressing film has the characteristics that film pollution is reduced and the service life is longer, a higher popularization and application value is obtained.

The present specification relates to a polymer comprising a unit represented by chemical formula 1 and a unit represented by chemical formula 2; a coating composition comprising the same; and an organic light emitting device formed using the same.

Provided is a new method for producing a positive electrode active material for lithium secondary batteries, by which even in the case of washing a spinel type lithium transition metal oxide with water or the like, the service life characteristics can be further enhanced, and the concentration of magnetic substances can be effectively reduced. Suggested is a method for producing a positive electrode active material for lithium secondary batteries, the method including a water washing step of bringing a powder of a spinel type lithium transition metal oxide into contact with a polar solvent and thereby washing the powder; and a drying step of subsequently drying the powder by heating the powder to 300° C. to 700° C. in an atmosphere containing oxygen.