摘要:
To minimize distance from a power supply or ground line of a semiconductor integrated circuit of a semiconductor device to electrodes of a printed board, a power supply electrode or ground line of the semiconductor integrated circuit is connected to a metal film through openings provided in a protective film over the power supply electrode. The structure comprising the deposited protective film and exposed metal film also allow radiation of heat through a minimized heat radiation path. The metal film is exposed to a printed board or exposed on the opposite side of the device, and the metal film is connected to a power supply or ground electrode of the printed board through its exposed surface. Alternatively, connected upper and lower metal films, with a stress relief film interposed, may be disposed in place of the metal film, or a metal sheet may be disposed over the metal film.
摘要:
New intermediate, an optically active (1R,5S,6S,7R)-6-tert-butyldiphenylsilyloxmethyl-7-hydroxy-bicyclo[3.3.0]octan-3-one (I) having high optical purity which is useful for the synthesis of an optically active carbacyclin and an optically active pentalenolactone E methyl ester. The compound (I) is also an intermediate compound serving for the purpose of improving the optical purity of (1R,5S,6S,7R)-3,3-ethylenedioxy-6-hydroxymethyl-7-(2'-tetrahydropyranyloxy)bicyclo[3.3.0]octane. The compound (I) is prepared by reacting (1R,5S,6S,7R)-3,3-ethylenedioxy-6-hydroxymethyl-7-(2'-tetrahydropyranyloxy)bicyclo[3.3.0]octane with tert-butylchlorodiphenylsilane in the presence of a base and removing the ethylenedioxy and tetrahydropyranyl groups of the resultant compound under an acid condition.
摘要:
A high-strength, high-conductivity copper alloy comprises, all by weight, from 0.8 to 4.0% of Sn, from more than 0.01 to 0.4% of P, from 0.05 to 1.0% of Ni, from 0.05 to 1.0% of one, two or more elements selected from Al, Hf, Be, Mo, Zn, Te, Pb, Co, Zr, and Nb, and the remainder of Cu and inevitable impurities. The impurities include not more than 0.0020% of oxygen.
摘要:
Isocarbostyrils of the formula ##STR1## wherein R is a branched alkyl of 3 to 4 carbon atoms, and the acid addition salts thereof, having .beta.-adrenergic blocking activity, are described.
摘要:
A copper alloy with high strength and excellent electrical conductivity, corrosion resistance, and spring qualities, comprises 0.4-8% nickel, 0.1-3% silicon, 10-35% zinc, concomitant impurities, and the remainder copper, all by weight. It further comprises at least one element as an accessory ingredient or ingredients selected from the group consisting of 0.001-0.1 wt % each of phosphorus and arsenic and 0.01-1 wt % each of titanium, chromium, tin, and magnesium. The accessory ingredient or ingredients combinedly account for 0.001-2% of the total weight of the alloy composition.
摘要:
In order to minimize a distance from a power supply line and/or a ground line of a semiconductor integrated circuit of a semiconductor device to electrodes of a printed board, at least either a power supply electrode or the ground line of the semiconductor integrated circuit is connected to a metal film through openings provided in a protective film over the power supply electrode. The metal film is exposed on a side of the semiconductor device, adjacent to a printed board on which the semiconductor device is mounted, or on a side thereof, opposite from the printed board, and the metal film is connected a power supply electrode and/or a ground electrode of the printed board through the exposed surface of the metal film. Alternatively, upper and lower metal films connected to each other, with a stress relief film interposed therebetween, may be disposed in place of the metal film, or a metal sheet may be disposed over the metal film. Further, in order to minimize the length of a heat radiation path of the semiconductor integrated circuit of the semiconductor device, the protective film is deposited on the semiconductor integrated circuit, and the metal film is exposed on the side of the semiconductor device, adjacent to the printed board on which the semiconductor device is mounted, or on the side thereof, opposite from the printed board, thereby effecting heat radiation. Alternatively, the upper and lower metal films connected to each other, with the stress relief film interposed therebetween, may be disposed in place of the metal film, or a metal sheet functioning as a heat sink is disposed over the metal film.
摘要:
An aerosol product comprising the following compound (A), a middle-chain fatty acid triglyceride and a liquefied hydrofluoroalkane is provided. In the production of an aerosol product using a liquefied hydrofluoroalkane as propellant, the use of a middle-chain fatty acid triglyceride as dispersant insures good dispersion of compound (A) in the propellant. The result is an aerosol product free from variation in the dispensed dose of compound (A).
摘要:
A developing apparatus comprises a development housing containing developer and disposed opposite to a carrier for carrying a latent image, and a developing roller rotatably provided in the development housing and rotatively driven in a predetermined direction. The developer in the development housing is carried by the developing roller and the developer carried by the developing roller is applied to the carrier through an opening formed in the development housing. A rotation speed F.beta. of the developing roller is higher than a movement speed F.alpha. of the carrier. A gap .beta. between an opening downstream side wall portion of the development housing and the developing roller is greater than a gap .alpha. between the opening downstream side wall portion and the carrier.
摘要:
A developer processing apparatus includes a rotary member provided rotatably in a container containing the developer, a sealing member provided at the rotary member and being brought into pressure contact with a portion supporting the rotary member and a sealing layer provided at the portion where the sealing member is brought into pressure contact, and formed of a material having lower hardness than the sealing member.
摘要:
A packaging material for electronic components is provided which inhibits the cracking of a passivation film on an encapsulated chip and inhibits the breaking of an interconnecting metallization pattern in a chip of an electronic component and meets the miniaturization trend for electronic components. The packaging material includes: a resin, and 80% to 93% by weight, relative to the total amount of the packaging material, of a filler made up of particles having an average particle size of 30 .mu.m or less, at least 90% by weight of which are spherically shaped or have rounded ends and/or edges.