摘要:
An anisotropic conductive film is obtained by dispersing conductive particles in an insulating adhesive composition including a (meth)acrylate-based monomer composition, a radical polymerization initiator, and a film-forming resin. The (meth)acrylate-based monomer composition includes a (meth)acrylate-based monomer which has a cyclic ester residue or a cyclic amide residue represented by the formula (1): R1 is a hydrogen atom or a methyl group; R2 is an alkylene group or an alkyloxy group; R3 is an alkyl group, an alkylene group, an aryl group, or a halogen atom; n is an integer of 0 to 3; R4 is absent or an alkylene, dotted lines on both sides of R4 jointly represent a single bond; X1 is absent, or an oxygen atom or a carbon atom; and X2 is an oxygen atom, a nitrogen atom, or a sulfur atom.
摘要:
An alignment mark at a position that overlaps an area in which an anisotropic conductive film is pasted, and to accurately perform alignment using an image captured by a camera. An alignment method in which an electronic component is mounted on the obverse surface of a transparent substrate with a conductive adhesive agent interposed therebetween, a substrate-side alignment mark and a component-side alignment mark are adjusted from the captured image, and the position at which the electronic component is mounted on the transparent substrate is aligned, wherein in the conductive adhesive agent, conductive particles are in a regular arrangement as viewed from a planar perspective, and in the captured image, the outside edges of the alignment marks exposed between the conductive particles are intermittently visible as line segments (S) along the imaginary line segments of the outside edges of the alignment mark.
摘要:
This adhesive contains an epoxy compound, a cationic catalyst, and an acrylic resin that includes acrylic acid and an acrylic acid ester having a hydroxyl group. The acrylic acid in the acrylic resin reacts with the epoxy compound, creating a link between the acrylic resin island part and the epoxy compound sea part, and strengthening the anchoring effect with respect to the epoxy compound sea part by roughening the surface of an oxide film. Furthermore, the hydroxyl-group-containing acrylic acid ester in the acrylic resin becomes electrostatically adhesive to wiring due to the polarity of the hydroxyl group. Excellent adhesive strength can be obtained by adhering, in this way, the entire cured product composed of the acrylic resin island part and the epoxy compound sea part to the oxide film.
摘要:
To reduce substrate warp occurring after connection an anisotropic conductive film is used. An anisotropic conductive film has: a first insulating adhesive layer; a second insulating adhesive layer; and a conductive particle-containing layer sandwiched by the first insulating adhesive layer and the second insulating adhesive layer and having conductive particles contained in an insulating adhesive, wherein air bubbles are contained between the conductive particle-containing layer and the first insulating adhesive layer, and, the conductive particle-containing layer, a portion thereof below the conductive particles and in contact with the second insulating adhesive layer has a lower degree of cure than other portions thereof.
摘要:
Illustrative embodiments of anisotropic conductive adhesive (ACA) and associated methods are disclosed. In one illustrative embodiment, the ACA may comprise a binder curable using UV light and a plurality of particles suspended in the binder. Each of the plurality of particles may comprise a ferromagnetic material coated with a layer of electrically conductive material. The electrically conducting material may form electrically conductive and isolated parallel paths when the ACA is cured using UV light after being subjected to a magnetic field.
摘要:
A method for conductively attaching a workpiece (110) onto a substrate (101). Spreading a layer of an adhesive polymeric compound (130) over the first surface (101a) of the substrate, the compound including a suspension of electrically and thermally conductive first particles (140) intermixed with a suspension of ferromagnetic surfactant-coated second particles (141). Applying an external magnetic field (401) to the layer, the field oriented normal to the first surface and capable of arraying the ferromagnetic particles in lines, and, by causality, aligning the conductive particles in chains normal to the first surface. Orienting the second surface (110a) of the workpiece parallel to the first substrate surface (101a) and bringing the aligned conductive particle chains (140) in contact with the first and second surfaces by pressing the workpiece onto the layer and piercing the chain ends to touch the first and second surfaces.
摘要:
A composition of matter comprising a plurality of nanoparticles in a non-conductive binder, wherein, the type of nanoparticles form isolated parallel electrically and thermally conductive columns when cured in the presence of the magnetic field. Also wherein the plurality of nanoparticles are Paramagnetic or Ferromagnetic magnetic. Wherein the nano particles are coated, and of a particular shape. Wherein the particles are selected from the group consisting of; Al, Pt, Cr, Mn, crown glass, Fe, Ni, and Co, Ni—Fe/SiO2, Co/SiO2, Fe—Co/SiO2, Fe/nickel-ferrite, Ni—Zn-ferrite/SiO2, Fe—Ni/polymer, Co/polymer, ferrites, iron oxide and any combination and alloy thereof, and the Binder selected from the group consisting of; epoxies, polyurethanes, polyimides, polymeric materials, silicones, adhesives, acrylates, the UV curable modifier and any combination thereof.
摘要:
The present invention relates to b-stageable die attach adhesives, methods of preparing such adhesives, methods of applying such adhesives to the die and other substrate surfaces, and assemblies prepared therewith for connecting microelectronic circuitry.
摘要:
The invention is intended for providing a semiconductor package structure which prevents degradation in characteristics of a semiconductor device, and breakage of interconnections, when the semiconductor device is packaged on a circuit substrate. In the package structure having the semiconductor device mounted on the circuit substrate, bump electrodes of the semiconductor device are placed on input/output terminal electrodes of the circuit substrate and are electrically and mechanically connected thereto by bonding with a conductive adhesive, and the semiconductor device is bonded and fixed to the circuit substrate by a resin film formed previously on a surface of a main body of the circuit substrate. The structure does no damage to a semiconductor functional part and to interconnections, and allows mounting with a lower load as compared to structures using conventional anisotropic conductive films and the like.