Abstract:
Disclosed are an electronic component mounting system and an electronic component mounting method capable of ensuring high connection reliability. An electronic component mounting system (1) includes a component mounting section which includes a solder printing device (M1), a coating/inspection device (M2), a component mounting device (M3), and a reflow device (M4), and mounts an electronic component on a main substrate (4), and a substrate connection section which includes a bonding material supply/substrate mounting device (M5) and a thermal compression device (M6), and connects the main substrate (4) with the component mounted thereon and a module substrate (5) to each other. A configuration is used in which a substrate conveying mechanism (3) of the reflow device (M4) on the lowermost stream side of the component mounting section and a substrate conveying mechanism (3) of the bonding material supply/substrate mounting device (M5) of the substrate connection section are connected directly to each other or are linked to each other by a conveying path through another conveying means. Thus, the main substrate (4) after reflow can be transferred immediately to a substrate connection step, and the generation of a void in the connection portion due to moisture being evaporated in the substrate connection step can be excluded.
Abstract:
A circuit substrate includes: a mounting region having an exposed surface that is planarized, and in which a predetermined chip is to be mounted; patterns provided in the mounting region, and including respective top faces that form a part of the exposed surface; and solder bumps provided on the respective patterns, and having substantially same shape as one another.
Abstract:
There is provided a flip-chip mounting resin composition which can be used for a flip-chip mounting process that is high in productivity and reliability and thus can be applicable to a flip-chip mounting of a next-generation LSI. This flip-chip mounting resin composition comprises a resin, metal particles and a convection additive 12 that boils upon heating the resin 13. Upon the heating of the resin 13, the metal particles melt and the boiling convection additive 12 convects within the resin 13. This flip-chip mounting resin composition is supplied between a circuit substrate 10 and a semiconductor chip 20, and subsequently the resin 13 is heated so that the molten metal particles self-assemble into the region between each electrode of the circuit substrate and each electrode of the semiconductor chip. As a result, an electrical connection is formed between each electrode of the circuit substrate and each electrode of the semiconductor chip. Finally, the resin 13 is allowed to cure so that the semiconductor chip 20 is secured to the circuit substrate 10, which leads to in a formation of a flip chip assembly.
Abstract:
The invention relates to a thermosetting resin composition which includes a metal filler component, a fluxing component and a thermosetting resin binder. The metal filler component includes at least one of bismuth (Bi) and indium (In), and tin (Sn). The fluxing component, which at least one of a compound of structural formula (1) below and a compound of structural formula (2) below, is used. In the above formulas, R1 to R6 are each a hydrogen or alkyl group, and X is an organic group which has a lone electron pair or double bond π electrons and is capable of coordinating with a metal.
Abstract:
Provided are a chip component mounting structure and a chip component mounting method, wherein when a plurality of chip components having different heights are mounted on a substrate via an anisotropic conductive film, position gaps which occur when the chip components are pressure-bonded to the substrate are prevented, and the chip components can be accurately mounted to the substrate at target positions; and a liquid crystal display device provided with the substrate. In the chip component mounting structure, a position fixing resin (4) for maintaining the orientation of chip components (2) which are pressure-bonded to a substrate (1) via an anisotropic conductive film (7) is provided. In the chip component mounting method, after the position fixing resin (4) for maintaining the orientation of the chip components (2) which are mounted to the substrate (1) via the anisotropic conductive film (7) is applied to the substrate (1) and cured, the chip components (2) are heated at a predetermined temperature and pressed at a predetermined pressure via an elastic sheet (5) provided on the chip components (2) and, then, pressure-bond to the substrate (1) together. The liquid crystal display is provided with such a substrate.
Abstract:
A wiring board includes a base wiring board 10 and a frame wiring board 20. The base wiring board 10 has an element mounting portion 1a and a frame-shaped frame joining portion 1b on the upper surface and a solder resist layer 4 deposited in a portion between the element mounting portion 1a and the frame joining portion 1b. In the wiring board 10, a first joining pad 6 provided in the frame joining portion 1b and a second joining pad 16 provided in a lower surface of the frame wiring board 20 are joined together via a solder bump H so that a gap may be formed between the frame joining portion 1b and the frame wiring board 20. The base wiring board 10 has a resin injection hole 8 penetrating through the base wiring board 10 in the frame joining portion 1b, and the gap is filled with a sealing resin 18.
Abstract:
A wiring board includes a main surface where an electronic component is mounted in a face-down manner so that a surface of the electronic component having plurality of external connecting terminals faces the main surface of the wiring board, the electronic component being fixed to the wiring board by an adhesive; an insulating layer formed on the main surface where the electronic component is mounted; an opening part formed in the insulating layer so that a plurality of adjacent wiring patterns are commonly and partially opened, the adjacent wiring patterns having electrodes where electrodes of the electronic component are connected; wherein an outer periphery of the opening part situated at a center side of the wiring board is formed in an oblique direction against extending directions of the wiring patterns.
Abstract:
In a case where a first mounted substrate to which a semiconductor element is bounded by solder is mounted on a second substrate, connection strength becomes low, when the first mounted substrate is bonded to the second substrate by using a solder having a low melting point. A mounted structure, in which a first mounted substrate on which a semiconductor element is bonded by using a first solder having a melting point of 217° C. or more, is mounted on a second substrate, includes plural bonding parts bonding the first mounted substrate to the second substrate; and a reinforcing member formed around the bonding part. Each of the bonding parts contains a second solder having a melting point, that is lower than the melting point of the first solder, and a space exists, in which the reinforcing members do not exist, between the bonding parts neighboring each other.
Abstract:
The invention is directed to a method of bonding a hermetically sealed electronics package to an electrode or a flexible circuit and the resulting electronics package that is suitable for implantation in living tissue, such as for a retinal or cortical electrode array to enable restoration of sight to certain non-sighted individuals. The hermetically sealed electronics package is directly bonded to the flex circuit or electrode by electroplating a biocompatible material, such as platinum or gold, effectively forming a plated rivet-shaped connection, which bonds the flex circuit to the electronics package. The resulting electronic device is biocompatible and is suitable for long-term implantation in living tissue.
Abstract:
An electrical interconnect has an adhesive layer in which is formed an array of apertures, the apertures being of non-circular shape. An electrical circuit apparatus has a first circuit having at least one electrical contact, a second circuit having at least one electrical contact aligned to the electrical contact of the first circuit, and a standoff structure between the first and second circuits having at least one aperture aligned to one electrical contact of the first and second circuits, the aperture being of a non-circular shape.