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.

Semiconductor packages and methods of forming the same are disclosed. a semiconductor package includes a die and an underfill. The die is disposed over a surface and includes a first sidewall. The underfill encapsulates the die. The underfill includes a first underfill fillet on the first sidewall, and in a cross-sectional view, a second sidewall of the first underfill fillet has a turning point.

Package structure and method of manufacturing the same are provided. The package structure includes a first die, a second die, a first encapsulant, a bridge die, and a second encapsulant. The first encapsulant laterally encapsulates the first die and the second die. The bridge die is electrically connected to the first die and the second die. The second encapsulant is located over the first die, the second die and the first encapsulant, laterally encapsulating the bridge die and filling a space between the bridge die and the first die, between the bridge die and the first encapsulant and between the bridge die and the second die. A material of the second encapsulant is different from a material of the first encapsulant.

A resin composition that has both excellent flux activity and high insulation reliability, that possesses good storage stability, and that further has flexibility with good operability upon being used as a laminate is provided. The resin composition contains a chelating flux agent (A), a thermal radical polymerization initiator (B) and a radical polymerizable compound (C).

A resin composition that has both excellent flux activity and high insulation reliability, that possesses good storage stability, and that further has flexibility with good operability upon being used as a laminate is provided. The resin composition contains a chelating flux agent (A), a thermal radical polymerization initiator (B) and a radical polymerizable compound (C).

Semiconductor packages and methods of forming the same are disclosed. a semiconductor package includes a die and an underfill. The die is disposed over a surface and includes a first sidewall. The underfill encapsulates the die. The underfill includes a first underfill fillet on the first sidewall, and in a cross-sectional view, a second sidewall of the first underfill fillet has a turning point.

A printed circuit board assembly of an implantable medical device comprises a printed circuit board and a sensor device that is arranged at the printed circuit board and joined to the printed circuit board by way of an adhesive layer. It is provided in the process that the adhesive layer is formed of an adhesive compound in which glass spheres are embedded. In this way, a printed circuit board assembly is provided which, in a simple, inexpensive manner, allows a sensor device to be joined to a printed circuit board for installation in a medical device, with advantageous mechanical decoupling and improved process reliability.

The present invention pertains to a curable organopolysiloxane composition comprising at least (A) an organopolysiloxane having at least two alkenyl groups per module, (B) an organopolysiloxane resin represented by average unit formula: (R.sup.1.sub.3SiO.sub.1/2).sub.a(R.sup.1.sub.2SiO.sub.2/2).sub.b(R.sup.2SiO.sub.3/2).sub.c(SiO.sub.4/2).sub.d. In the formula, R.sup.1's are the same or different from each other, and represent a hydrogen atom or a monovalent hydrocarbon group not having an aliphatic unsaturated carbon bond but at least two of the R.sup.1's per molecule represent hydrogen atoms, R.sup.2 represents a monovalent hydrocarbon group not having an aliphatic unsaturated bond, and a, b, and c are numbers satisfying 0<a<1, 0<b<1, and 0c0.2, and 0<d<1, respectively, but are also numbers satisfying 0.6a/d 1.5, 1.5b/d3, and a+b+c+d=1, and (C) a catalyst for hydrosilylation reaction. This composition has excellent adhesiveness to a semiconductor element, and can form a cured product in which only a small number of bubbles are produced.

The present invention pertains to a curable organopolysiloxane composition comprising at least (A) an organopolysiloxane having at least two alkenyl groups per module, (B) an organopolysiloxane resin represented by average unit formula: (R.sup.1.sub.3SiO.sub.1/2).sub.a(R.sup.1.sub.2SiO.sub.2/2).sub.b(R.sup.2SiO.sub.3/2).sub.c(SiO.sub.4/2).sub.d. In the formula, R.sup.1's are the same or different from each other, and represent a hydrogen atom or a monovalent hydrocarbon group not having an aliphatic unsaturated carbon bond but at least two of the R.sup.1's per molecule represent hydrogen atoms, R.sup.2 represents a monovalent hydrocarbon group not having an aliphatic unsaturated bond, and a, b, and c are numbers satisfying 0<a<1, 0<b<1, and 0c0.2, and 0<d<1, respectively, but are also numbers satisfying 0.6a/d 1.5, 1.5b/d3, and a+b+c+d=1, and (C) a catalyst for hydrosilylation reaction. This composition has excellent adhesiveness to a semiconductor element, and can form a cured product in which only a small number of bubbles are produced.

A laser bonding apparatus, a method of bonding a plurality of semiconductor devices arranged on a main substrate of a workpiece, to the main substrate, and a method of manufacturing a semiconductor package, the laser bonding apparatus including a chamber having a transmissive window and in which a workpiece is accommodatable; a gas supply conduit connected to the chamber and configured to supply a gas at an elevated pressure relative to a pressure outside of the chamber; and a laser generator arranged outside the chamber and configured to irradiate the workpiece accommodated in the chamber, through the transmissive window.