Abstract: The present invention provides a high-voltage coil superior in insulating properties and rigidity at high temperatures, which comprises a bobbin, a conducting wire wound around the bobbin, and an encapsulant encapsulating the conducting wire, wherein the encapsulant comprises a liquid crystalline polyester having a repeating unit represented by defined formula (1), —O—Ar1—CO—, a repeating unit represented by defined formula (2), —CO—Ar2—CO—, and a repeating unit represented by defined formula (3), —X—Ar3—Y—, as a forming material.

Abstract: A hollow molded article is formed by laser welding a container and a lid. The container and lid are each injection molded from a material containing a thermoplastic resin and have gate marks, formed during molding. The thermoplastic resin is oriented in the flow direction in a molten state and solidified. The entire gate mark of the container is located on its outer or bottom surface, but is present in a position other than an area at two-thirds or less of the distance from the center of gravity to the outer periphery of the bottom surface. The entire gate mark of the lid is located on its upper, side, or lower surface, but is present in a position other than areas at two-thirds or less of the distances from the centers of gravity of the upper and lower surfaces of the lid to the outer peripheries of the respective surfaces.

Abstract: The present invention addresses the problem of providing a power device comprising a terminal-holding member excellent in insulating properties. The present invention relates to a power device having a power element, a terminal, and a terminal-holding member composed of a liquid crystalline polyester, wherein the liquid crystalline polyester is a liquid crystalline polyester having a repeating unit (1) derived from an aromatic hydroxycarboxylic acid, a repeating unit (2) derived from an aromatic dicarboxylic acid, and a repeating unit (3) derived from an aromatic diol, and the content of a repeating unit derived from isophthalic acid in the liquid crystalline polyester is 0 to 7 mol % relative to the total amount of all repeating units of the liquid crystalline polyester.

Abstract: The object of the present invention is to provide a laminate superior in dimensional stability, a method for the production thereof, and a circuit substrate using the laminate. There is disclosed a method for producing a laminate, the method including a first step of impregnating a fiber sheet with a liquid composition containing a liquid crystalline polyester and a solvent, and then removing the solvent contained in the fiber sheet to form a resin-impregnated sheet; a second step of stacking a plurality of the resin-impregnated sheets to form an insulative substrate, and then hot press treating the insulative substrate to form a laminated substrate; and a third step of heat treating the laminated substrate at a temperature within the range of from the glass transition temperature of the laminated substrate to the temperature of the glass transition temperature +150° C.

Abstract: A production method for a ceramic-resin composite, comprising a welding step of ultrasonically welding a ceramic component and a thermoplastic resin component, wherein at the welding step, at least one of the ceramic component and the thermoplastic resin component has been heated.

Abstract: A cleaning agent for a semiconductor device contains a hydroxide, water and a compound expressed in the following general formula (I) and/or the following general formula (II): HO—((EO)x—(PO)y)z—H  (I) R—[(EO)x—(PO)y)z—H]m  (II) Thus provided is a cleaning agent for a semiconductor device, which is so improved as not to disconnect a wire or an embedded conductive layer.