摘要:
Provided is a laminated film wherein the space between semiconductor elements that are three-dimensionally mounted can be filled easily and securely. The laminated film of the present invention is a laminated film for filling the space between semiconductor elements that are electrically connected through a member or connection, the film including a dicing sheet in which a pressure-sensitive adhesive layer is laminated on a base material and a curable film that is laminated on the pressure-sensitive adhesive layer, wherein the curable film has a lowest melt viscosity at 50 to 200° C. of 1×102 Pa·s or more and 1×104 Pa·s or less.
摘要:
Disclosed is an optical material including a cyclic olefin copolymer containing at least a repeating structural unit [A] represented by the general formula (1) and a repeating structural unit [B] represented by the general formula (2) and having a molar ratio [A]/[B] of from 95/5 to 1/99, wherein the absolute value of the ratio ΔOB/ΔF is from 0.001 to 0.250 in which ΔOB represents the amount of a change in the absolute value of the orientation birefringence calculated from the phase difference (nm) at a wavelength of 633 nm/film thickness (μm) in a stretched film obtained from the optical material, and ΔF represents the amount of a change in the absolute value of the orientation coefficient determined from the dichroic ratio of parallel light intensity I∥ to perpendicular light intensity I⊥, each relative to the orientation direction according to Raman spectroscopy.
摘要:
The LED mounting substrate of the present invention includes a thermally conductive layer (thermally conductive sheet (10)) made of a composition containing boron nitride powder and a fluororesin, and the fluororesin contains polytetrafluoroethylene. The thermally conductive layer has a thermal conductivity of 2 W/(m·K) or more. The thermally conductive layer has a reflectance of 0.80 or more at wavelengths of 380 nm, 470 nm, and 650 nm.
摘要:
In production of a reactive metal using a melting furnace for producing metal having a hearth, ingots can be efficiently produced by efficiently cooling the ingots extracted from the mold provided in the melting furnace. In addition, an apparatus structure in which multiple ingots can be produced with high efficiency and high quality from one hearth, is provided. A melting furnace for producing metal is provided, the furnace has a hearth for having molten metal formed by melting raw material, a mold in which the molten metal is poured, an extracting jig which is provided below the mold for extracting ingot cooled and solidified downwardly, a cooling member for cooling the ingot extracted downwardly of the mold, and an outer case for keeping the hearth, the mold, the extracting jig, and the cooling member separated from the air, wherein at least one mold and extracting jig are provided in the outer case, and the cooling member is provided between the outer case and the ingot, or between the multiple ingots.
摘要:
A wiring circuit layer 2 having at least a wiring part and an insulating part, whose top and bottom surfaces (20A, 20B) is adhesive surfaces, is formed on a metal support substrate 1 in a way such that the layer 2 can be peeled from the substrate 1. Exposed in the first adhesive surface 20A of the wiring circuit layer 2 is a first connecting conductor part 21, which is connectable with an electrode 31 of a first semiconductor element 3 in a wafer state. After the wiring circuit layer 2 is laminated on and connected to the element 3, the metal support substrate 1 is peeled from the wiring circuit layer 2 to yield a semiconductor device 4. Another element may be connected to the other adhesive surface 20B exposed upon the peeling.
摘要:
The present invention provides a titanium slab for hot rolling which can be fed into a general purpose hot-rolling mill for producing strip coil, without passage through a breakdown process such as blooming or a straightening process, and can further suppress surface defect occurrence of the hot-rolled strip coil, and a method of producing and a method of rolling the same, characterized in that in the cast titanium slab an angle θ formed by the crystal growth direction (solidification direction) from the surface layer toward the interior and a direction parallel to the slab casting direction (longitudinal direction) is 45 to 90°, and moreover, there is a surface layer structure of 10 mm or greater whose θ is 70 to 90°, and further characterized in that a crystal grain layer of 10 mm or greater is formed whose C-axis direction inclination of a titanium a phase is, as viewed from the side of the slab to be hot rolled, in the range of 35 to 90° from the normal direction of the surface to be hot rolled. The titanium slab concerned is produced using an electron beam melting furnace by casting at an extraction rate of 1.0 cm/min or greater.
摘要:
Provided is an imprint product, which is for transcribing a fine pattern of a mold surface and which contains a fluorine-containing cyclic olefin polymer containing repeating unit represented by formula (1) and having a fluorine atom content rate of 40% to 75% by mass.
摘要:
There is provided an acrylic adhesive composition which comprises: (A) a vinyl polymer comprising a homopolymer or a copolymer of an alkyl (meth)acrylate having a C4 to C14 alkyl group; (B) an organophilic layered double hydroxide organically treated with an organic anion; and (C) a crosslinking agent. Therefore the obtained adhesive composition has sufficient adhesiveness to an object, excellent heat resistance and excellent adhesive properties particularly at higher temperatures, and is substantially free from variations in adhesiveness.
摘要:
An alumina particle (1) of the present invention has an alumina body with a short axis length (b) of 1 to 10 nm, a long axis length (a) of 20 to 400 nm and an aspect ratio (a/b) of 5 to 80. The alumina body is expressed by a Formula I, and n is not less than 0. Al2O3.nH2O Formula I
摘要:
A printed circuit board having prescribed conductive patterns formed on an insulating layer is provided about 20 mm apart from an AC electrode provided in a plasma etching device. An earth electrode is provided on the side opposing the AC electrode. More specifically, the printed circuit board is provided outside a sheath layer that is a region having a high plasma density generated in the vicinity of the AC electrode. The frequency of an AC power supply is preferably not more than 1 GHz. The pressure in the device is preferably in the range from 1.33×10−2 Pa to 1.33×102 Pa. The inter-electrode distance between the AC electrode and the earth electrode is preferably not more than 150 mm, more preferably from 40 mm to 100 mm.