Abstract:
Electrical component assembly (30) comprising a first electrical component (32) comprising an electrical connection protrusion (34) (e.g., a solder bump) made of a first metal solder composition having a first melting point, and a second electrical component (36) comprising an electrical contact (38). A second metal solder composition (40) having a second melting point is formed or otherwise disposed so as to function as an electrical connection between at least a portion of the electrical connection protrusion (34) and the electrical contact (38) of the second electrical component (36). The second melting point is lower than the first melting point, and there is a distinct interface of demarcation between the electrical connection protrusion (34) and the second metal solder composition (40).
Abstract:
[Object] Provided are a connection method and an electronic device, in which the manufacturing process can be simplified, and a connection structure using an adhesive can be produced at low cost. [Solution] A connection method according to the present invention includes a step (a2) of preparing a base material including an electrode (22) for connection using an adhesive (30) and an electrode (26) for connection using solder (50); a step (b2) of covering only the electrode (26) for connection using solder with an organic film (15) formed by OSP treatment or a noble metal plating film, the electrode for connection using solder being arranged on the base material; a step (c2) of joining the electrode (26) for connection using solder to a connection conductor (42) using solder by solder reflow treatment in a non-oxidizing atmosphere; and after the step (c2), a step (d2) of bonding the electrode (22) for connection using an adhesive to a connection conductor (12) with an adhesive (30) mainly containing a thermosetting resin to establish electrical connection.
Abstract:
The camera module structure (10) of the present invention, is a board electrode (2) formed on a printed board (1) and a mounting electrode (4) formed on a camera module (3) mounted on the printed board (1) being joined through a solder joint section (5), and the board electrode (2) and the mounting electrode (4) are aligned by self-alignment. The solder joint section (5) is composed of a first solder (6) and a second solder (7) having different characteristics. Thus, a solder mounting structure wherein a heavy-weight component is joined on the board with solder by self-alignment is provided.
Abstract:
A soldering member for connection to an external unit, which is joined to a connection terminal having a nickel/gold electroless plating layer on the surface formed correspondingly to a conductor pattern on a printed wiring board. The member comprises a soldering ball containing finely powdered copper, and exhibits excellent strength of junction to the connection terminal.
Abstract:
It provides metal-powder-contained flux disposed between bumps and circuit electrodes when electronic parts are mounted by soldering, the metal powder comprises a core metal formed of metal such as tin and zinc and a surface metal covering surfaces of the core metal formed of noble metal such as gold and silver. Accordingly, metal powder will not remain as residue that is liable to cause migration after the reflow process, and it is possible to assure both soldering effect and insulation effect.
Abstract:
A ball grid array package includes a substrate with a top and bottom surface. A circuit component is located on the bottom surface. The circuit component has a pair of ends. A pair of conductors are located on the bottom surface. The conductors are connected to the ends of the circuit component. A conductive epoxy covers a portion of the conductors and a portion of the bottom surface. The conductive epoxy is in electrical contact with the conductors. A ball is connected to the conductive epoxy. The conductive epoxy provides an electrical connection between the conductor and the ball. The ball is preferably copper and is subsequently coated to prevent corrosion. Other embodiments of the invention are shown in which the balls are omitted and in which the conductive epoxy is used to fill vias in a substrate.