Disclosed are a conductive particle, an anisotropic conductive film, a display device, and a method for fabricating the same so as to detect the extent to which the conductive particles are cracked in a heating and pressurizing process, to thereby improve the ratio of finished products while the display device is being manufactured. A core of the conductive particle is a fluorescent resin core. In the conductive particle according to this disclosure, the core of the conductive particle is a fluorescent resin core, and the extent to which the conductive particle is cracked can be detected by detecting varying fluorescence in a heating and pressuring process, to thereby alleviate such a phenomenon from taking place that the conductive particle has a poor electrical conductivity due to an insufficient pressure, or the conductive particle is cracked, and thus loses its electrical conductivity, due to an excessive pressure.

Provided are copper microparticles which have exceptional oxidation resistance, in which oxidation is reduced even when the copper microparticles are held at a firing temperature in an oxygen-containing atmosphere, and in which sintering also occurs. The copper microparticles have a particle diameter of 10-100 nm, have a surface coating material, and are such that, after the copper microparticles are held for one hour at a temperature of 400 C. in an oxygen-containing atmosphere, the particle diameter exceeds 100 nm while a copper state is retained.

An electrode layer has a plurality of substantially parallel electrodes disposed along a first direction. At least one electrode has a length along the first direction and a width from a first edge to a second edge along a second direction transverse to the first direction. At least one electrode comprises across its width at least one edge section, at least one intermediate section, and at least one central section, wherein an intermediate section is disposed along the electrode width between an edge section and the central section. At least one electrode edge section and intermediate section includes a plurality of electrically isolated regions arranged in a pattern along the electrode length. An electrode conductive area of the edge section is less than an electrode conductive area of the intermediate section.

An electrode layer has a plurality of substantially parallel electrodes disposed along a first direction. At least one electrode has a length along the first direction and a width from a first edge to a second edge along a second direction transverse to the first direction. At least one electrode comprises across its width at least one edge section, at least one intermediate section, and at least one central section, wherein an intermediate section is disposed along the electrode width between an edge section and the central section. At least one electrode edge section and intermediate section includes a plurality of electrically isolated regions arranged in a pattern along the electrode length. An electrode conductive area of the edge section is less than an electrode conductive area of the intermediate section.

An electrical conductor comprises three or more solid segments of identical shape. In cross-section, each segment comprises two sides, which are configured for flush bearing against correspondingly opposing lateral surfaces on another segment. The cross-sectional surface through all the constituent segments of the electrical conductor is describable by a closed curve having a stepless characteristic. All the constituent segments of the electrical conductor are stranded in combination.

A multilayer structure comprises a plurality of composite structures in a stacked configuration, each having a copper layer having a thickness of no larger than 25 m, and first and second graphene layers sandwiching the copper layer. The first graphene layer of a first composite structure among the plurality of composite structures directly contacts a second graphene layer of a second composite structure among the plurality of composite structures to form a graphene bi-layer structure. Either the first or second graphene layer of the graphene bi-layer structure comprises silver atoms, but not both. The silver atoms are ring-centered on graphene rings and delocalized inside the graphene rings.

Provided are: a production method for silver fine particles that retain capabilities such as conductivity and make it possible to form wiring at even lower temperatures; and silver fine particles. A silver fine particle production method in which silver powder is used to produce silver fine particles by means of a gas phase method. The silver fine particle production method has a step for supplying an organic acid to the silver fine particles. The gas phase method is, for example, a plasma method or a flame method. The silver fine particles have a surface coating that includes at least a carboxyl group.

A bonding washer for making electrical connection between two metal pieces that are to be mechanically fastened together. The washer, to be interposed between the two metal pieces, may be constructed so as to fasten to one of the pieces before the two pieces are joined. Teeth on the washer, positioned at right angles to the plane of the washer, are forced into each of the two metal pieces when the fastener is tightened, making electrical connection between the two metal pieces.

Provided is a method for producing high density nickel powder particularly having a median diameter of 100 to 160 m by controlling a particle size of nickel powder. The method includes: performing an initial operation by charging a pressure vessel equipped with a stirrer with a nickel ammine complex solution containing nickel in the concentration of 5 to 75 g/L together with seed crystals in the amount of 5 to 200 g per liter of the solution, increasing the temperature of the solution, and performing a reduction reaction with hydrogen by blowing hydrogen gas into the pressure vessel, thereby obtaining the nickel contained in the nickel ammine complex solution as nickel powder; and thereafter, performing a specified operation A repeatedly at least once to obtain the nickel powder having the median diameter of 100 to 160 m and a bulk density of 1 to 4.5 g/cm.sup.3.

Provided is a metal-containing particle which can be bonded to another particle or another member by melting a tip of a protrusion in the metal-containing particle at a relatively low temperature and solidifying the melt after melting, enhance connection reliability, suppress an ion migration phenomenon, and enhance insulation reliability. The metal-containing particle according to the present invention is a metal-containing particle, an outer surface of which has a plurality of protrusions, in which the metal-containing particle includes a base particle, a metal section which is disposed on a surface of the base particle, an outer surface of the metal section having a plurality of protrusions, and a metal film covering the outer surface of the metal section, and a tip of the protrusion in the metal-containing particle is meltable at 400 C. or less.