Abstract: To provide a mold capable of manufacturing a metal-ceramic composite member in which a predetermined number of ceramic members are joined onto a large joining metal, the large joining metal being free from swell and shrinkage cavity on the surface thereof and high in dimensional precision. A metal-ceramic composite member 3 according to this embodiment is manufactured in such a manner that a predetermined number of metal-ceramic bonded substrates 30 are placed in a mold main body 11 constituting a mold 1, with a ceramic substrate 31 side thereof facing upward, an atmosphere inside and outside the mold 1 is replaced with an inert gas such as a nitrogen gas from the atmosphere, a molten metal 42 is poured and filled in a first joining portion 14 that is formed by the molten metal main body 11 and an upper container 13 and that has a shrinkage cavity inducing portion 16 on a metal material holding portion side and a shrinkage cavity inducing portion 18 on an air vent side, and the molten metal 42 is cooled.

Abstract: There is provided a metal/ceramic bonding substrate capable of preventing the reverse thereof from greatly warping so as to be concave even if it is heated for soldering. In the metal/ceramic bonding substrate, a metal circuit plate 12 is bonded to one side of a ceramic substrate 10, and a heat sink plate (metal base plate) 14 is bonded to the other side thereof. On the heat sink plate 14, a work-hardened layer 16 is formed by shot peening. On the metal circuit plate 12 of the metal/ceramic bonding substrate, semiconductor chips (Si chips) 18 are soldered (solder layer 20). Then, a power module is produced by a predetermined process. On the reverse (the side of the work-hardened layer 16) of thepowermodule, a radiating fin 26 is mounted via a thermal grease 24 by means of screws 22 or the like.

Abstract: To provide a manufacturing apparatus that is capable of manufacturing metal-ceramic composite members in various shapes with high productivity, and a mold member and a manufacturing method therefor. An apparatus for manufacturing a metal-ceramic composite member was made, the apparatus including: a plurality of process regions, namely, an atmosphere replacing/heating part 11, a molten metal push-out part 21, and a cooling part 31; and a guide 48 for allowing a mold to pass through these plural process regions, molds 60 having ceramic members 86 placed therein are successively inserted into a mold inlet 43 provided in this guide 48 to pass through the guide 48 practically in a shielded state from the atmosphere, a molten metal 53 is poured thereto in the molten-metal push-out part 21, and the molten metal 53 is cooled and solidified in the cooling part 31 to join a metal and a ceramic, thereby manufacturing the metal-ceramic composite member.

Abstract: An aluminum plate 12 having a purity of 99.5% or more, preferably 99.9% or more, is caused to contact at least one side of a ceramic substrate 10 of aluminum nitride or alumina to be heated at a temperature of 620 to 650° C. in an inert gas to bond the aluminum plate 12 directly to the ceramic substrate 10.

Abstract: The present invention provides a combined member of aluminum-ceramics. The combined member comprises a ceramic board, a conductive member holding electronic parts thereon, formed on one surface of the ceramic board, and a water cooling jacket of aluminum or aluminum alloy bonded directly on the other surface of the ceramic board.

Abstract: The present invention provides a scattering sheet obtained by forming a scattering resin into a sheet having a thickness of about 1 &mgr;m to about 100 &mgr;m, and having a total light transmittance of about 85% or more and less than about 100%, and a haze of about 50% or more and less than about 90%, wherein the scattering resin comprising a colorless transparent resin and colorless transparent spherical particles dispersed in the colorless transparent resin, a difference between a refractive index of the colorless transparent resin and a refractive index of the colorless transparent is more than about 0.00 and not more than about 0.

Abstract: The present invention provides a method of forming a circuit pattern on an integrally bonded member, the method not requiring a correction step of a laminate film or a resist film which has been necessary at the time of wet treatment of the integrally bonded member. After a circuit pattern forming metal plate 13 is bonded on a part of a ceramic substrate 12 so as to expose an outer peripheral edge portion of the ceramic substrate 12 in an integrally bonded member 10, the integrally bonded member 10 is set on a treating apparatus 30 while being covered with a masking member 20 having a window portion 22 from which the circuit pattern forming metal plate 13 of the integrally bonded member 10 is exposed.

Abstract: There is provided a metal/ceramic bonding article which ensures sufficient thermal shock resistance and has a substrate having a small outside dimension and which has both high reliability and compactness. The metal/ceramic bonding article comprises: a ceramic substrate; and a metal plate bonded to the ceramic substrate via a brazing filler metal, wherein the brazing filler metal protrudes from the bottom face of the metal plate by a length which is longer than 30 &mgr;m and which is 250 &mgr;m or less, or wherein the brazing filler metal protrudes from the bottom face of the metal plate by a length which is 25% or more of the thickness of the metal plate.

Abstract: There is provided a metal/ceramic bonding article which ensures sufficient thermal shock resistance and has a substrate having a small outside dimension and which has both high reliability and compactness. The metal/ceramic bonding article comprises: a ceramic substrate; and a metal plate bonded to the ceramic substrate via a brazing filler metal, wherein the brazing filler metal protrudes from the bottom face of the metal plate by a length which is longer than 30 &mgr;m and which is 250 &mgr;m or less, or wherein the brazing filler metal protrudes from the bottom face of the metal plate by a length which is 25% or more of the thickness of the metal plate.

Abstract: An image display device is provided which comprises an antiglare surface having unevenness and pixels having a minimum pixel pitch (a) of about 10 to about 100 &mgr;m, wherein a ratio (Sm/a) of an average spacing of roughness peak (Sm) of said unevenness to the minimum pixel pitch (a) is about 0.4 or smaller. In the image display device, the generation of “glittering” can be restrained.

Abstract: The present invention provides a scattering sheet obtained by forming a scattering resin into a sheet having a thickness of about 1 &mgr;m to about 100 &mgr;/m, and having a total light transmittance of about 85% or more and less than about 100%, and a haze of about 50% or more and less than about 90%, wherein the scattering resin comprising a colorless transparent resin and colorless transparent spherical particles dispersed in the colorless transparent resin, a difference between a refractive index of the colorless transparent resin and a refractive index of the colorless transparent is more than about 0.00 and not more than about 0.

Abstract: By using an optically anisotropic film having the optical axis substantially parallel to the normal line of the film and comprising a polymer of a liquid crystal oligomerhaving positive anisotropy of refractive index and showing nematic or smectic phase, or by lamining the optically anisotropic film and a transparent or semitransparent polymer film, or by combining the optically anisotropic film with a uniaxially oriented retardation film, it is possible to obtain a composite retardation plate with a large viewing angle, and this retardation plate can be applied to a liquid crystal display device.

Abstract: By using an optically anisotropic film having the optical axis substantially parallel to the normal line of the film and comprising a polymer of a liquid crystal oligomerhaving positive anisotropy of refractive index and showing nematic or smectic phase, or by lamining the optically anisotropic film and a transparent or semitransparent polymer film, or by combining the optically anisotropic film with a uniaxially oriented retardation film, it is possible to obtain a composite retardation plate with a large viewing angle, and this retardation plate can be applied to a liquid crystal display device.

Abstract: The present invention provides an aromatic oligomer comprising repeating structural units represented by the following formula (I), which oligomer has a number-average degree of polymerization of 2 to 10 and a flow temperature of 100.degree. to 400.degree. C.; and a process for preparing the same: ##STR1## wherein X is selected from O and S; and Ar is selected from ##STR2## wherein R.sup.1 and R.sup.2 are each selected from alkyl group having 1 to 3 carbon atoms and phenyl group, and p and q are each an integer of 0 to 2.The aromatic oligomer of this invention is mixed or reacted with a polymeric substance such as thermoplastic resin, thermosetting resin and rubber to realize enhancement of performance and functional characteristics of the polymeric material.

Abstract: There are provided a thermoplastic graft copolymer comprising, as main chain, a polymer having a glass transition temperature of 10.degree. C. or below and, as side chain, an aromatic oligomer having a flow temperature of 100.degree. C. or above; and its preparation process, especially a process wherein an aromatic oligomer containing 50% or more of the structural units represented by the following formula (I): ##STR1## wherein X is O or S; and Ar is ##STR2## wherein R.sup.1 and R.sup.2 are alkyl group of 1-3 carbon atoms or phenyl group, and p and q are an integer of 0-2.The graft copolymer of this invention can be used as a thermal resistant plastic elastomer for heat-resisting hoses, seals, automobile materials, etc.