摘要:
A method for producing a semiconductor device, comprises the steps of: introducing a plurality of semiconductor element supporting substrates or semiconductor elements into a conductive-ball attaching system for collectively attaching conductive balls onto the supporting substrates or semiconductor elements; detecting the position of a defective substrate or defective semiconductor element of the introduced semiconductor element supporting substrates or semiconductor elements, or an undesired position, at which it is not necessary to load the conductive balls; vacuum holding a plurality of conductive balls, which are stored in the conductive-ball attaching system, by conductive-ball holding means; and selectively attaching the plurality of conductive balls, which are vacuum-held by the conductive-ball holding means, onto a desired supporting substrate or semiconductor element of the supporting substrates or semiconductor elements introduced into the conductive-ball attaching system, wherein the conductive-ball holding means selectively vacuum holds the conductive balls so that just enough conductive balls are attached onto the peripheral portion of a wafer, on which semiconductor elements are irregularly arranged, and so that the conductive balls are not attached onto the defective supporting substrate or defective semiconductor element. Thus, it is possible to provide a method for producing a semiconductor device, which is able to load conductive balls onto BGA substrates or semiconductor elements capable of selectively holding the conductive balls so that just enough conductive balls are attached onto the peripheral portion of a wafer, on which the semiconductor elements are irregularly arranged, and so that the conductive balls are not attached onto defective BGA substrates or semiconductor elements.
摘要:
A traveling hearth for producing reduced metal by charging and stacking a raw material containing a metal-containing material and a solid-reducing material on a horizontally moving hearth, arranged for disposing a solid-reducing material layer on the hearth, forming concave portions at the solid-reducing material surface, stacking the raw material on the surface of the solid-reducing material layer, reducing the raw material by at least once heating and melting the material on the hearth to separate metal and gangue and ash ingredients, and discharging metal from the hearth.
摘要:
Disclosed is a plastic-clad optical fiber (PCF) comprising a quartz core and a polymer clad as tightly formed around the core, in which the clad has a multi-layered structure of a plurality of different polymers, and the refractive index of the core (nCO), that of the first clad as tightly formed around the core (nCL1) and that of the second clad as tightly formed over the first clad (nCL2) satisfy both 0.21 ≦(nCO2−nCL12)≦0.35 and nCL2
摘要:
A process for producing a coated film continuously, comprises the steps of:running a substrate film; andextruding a coating composition having a viscosity of 0.1 to 100 cps at 20.degree. C. through a slit of a die onto a surface of the substrate film to produce a coating layer having a thickness of 0.1 to 20 .mu.m over the substrate film. According to the present invention, it is possible to produce a coated film continuously at high speed, using a coating material having a viscosity as low as water or a coating material with a problem of deterioration due to the exposure to the air, thereby producing a coating layer over the substrate film to a uniform thickness.
摘要:
A p-type semiconductor composed basically of an Ib-IIIb-VIb.sub.2 group compound semiconductor (especially CuInS.sub.2) which is improved in carrier concentration and has advantages in manufacture and performance. In order to obtain the p-type semiconductor mentioned above, p-type CuInS.sub.2 is formed by adding both P (p-type impurity) and Sn (n-type impurity) to CuInS.sub.2. The carrier concentration of the p-type semiconductor is 5.times.10.sup.17 cm.sup.-3 which is larger than the value (5.times.10.sup.16 cm.sup.-3) obtained when P and In are added or another value (3.times.10.sup.15 cm.sup.-3) obtained when only P is added. A thin film solar cell characterized by a glass substrate (2), an Mo electrode (1), a p-type semiconductor layer (3), an n-type semiconductor layer composed of a CdS layer (4), and an ITO electrode (5) is manufactured by using the CuInS.sub.2 layer containing P and Sn as the p-type semiconductor (3). It is confirmed that the conversion efficiency of the solar battery is as high as 12%.
摘要:
A carrier particle which includes a core and a coating layer formed on the surface of the core. The coating layer is made of a coating material including: an organic compound (A) having a functional group other than an Si(OR.sup.1) group, where R.sup.1 is a hydrogen atom, a lower alkyl group or an acyl group; a compound (B) and/or a hydrolytic condensation product thereof, having a functional group having reactivity with the functional group of the organic compound (A), and an Si(OR.sup.1) group; an organometallic compound (C) and/or a hydrolytic condensation product thereof; and a solvent (D). The carrier particles of the present invention, enable toner particles to be sufficiently charged even at high temperature and high humidity, so that an image with no fog can be formed. In addition, the carrier particle has high durability. There is no unnecessary attachment of the toner particles onto the carrier particles, so that the problems of carrier particle contamination and spent toner never arise.
摘要:
The present invention provides a surface coating composition including: an organometallic comound (I) and/or a hydrolytic condensation product thereof: an organic compound (II) having a primary and/or secondary amino group in its molecule; and a compound (III) having a functional group reactable with the amino group in its molecule. The surface coating composition is capable of forming a coating layer which exhibits excellent gas barrier properties, transparency, and flexibility. A resin molding formed with the coating layer is preferably used as a wrapping material and a substrate for liquid crystal display device.
摘要:
Light receiving elements detect the intensity of light scattered from a sample cuvette containing particles irradiated by a laser beam from a laser source. Signals from the light receiving elements are evaluated to determine the size and number of the particles for its time-series display. In measuring blood corpuscles, the clumps of aggregation can be determined in terms of size and number on a time-series base with high accuracy, thus providing a useful means mechanism for clinically diagnosing various diseases including thrombosis and for determining the effectiveness of remedies.
摘要:
This invention has a principal object to eliminate, in a magnetic head and a method of manufacturing the same, the necessity of filling glass, etc. onto a magnetic film to thereby improve reliability of the magnetic head. This invention resides in a method of manufacturing a magnetic head including a pair of magnetic core half bodies opposite to each other, each of the magnetic core half bodies being such that a magnetic film is formed on a base, in which a thin film coil is formed at least at one surface of butting plane surfaces between these magnetic core half bodies, characterized in that, in forming the magnetic film on the base, recessed portions are formed in advance by ion milling, etc. at the base to form the magnetic film at the recessed portions. In this case, it is desirable that the magnetic film consists of a magnetic film having axis of easy magnetization in the depth direction of the magnetic gap and a magnetic film having axis of easy magnetization perpendicular to the axis of easy magnetization.
摘要:
A surface treatment composition which can form a coating having excellent gas barrier properties, transparency and flexibility, contains at least one silane compound component selected from the group consisting of a silane compound (A) having amino groups and hydrolytic condensation groups in their molecules, a hydrolytic condensation product (B) of the silane compound (A), and a co-hydrolytic condensation product (D) of the silane compound (A) and an organometallic compound (C); a compound (E) having at least two functional groups which can react with an amino group in its molecule; and solvent (F).