摘要:
A flip chip mounting process or a bump-forming process according to the present invention is characterized in that electrically-conductive particles are fixed on electrodes formed on an electronic component. A composition comprising solder powder, a convection additive and a resin component is supplied onto a surface of the electronic component, the surface is provided with the electrodes. The supplied composition is heated up to a temperature enabling the solder powder to melt. As a result, the convection additive boils or is decomposed so as to generate a gas. The generated gas produces a convection phenomenon within the supplied composition. Since the convection phenomenon promotes the movement of the solder powder, the solder powder can move freely within the composition. The electrically-conductive particles serve as nuclei for the solder powder to self-assemble and grow. As a result, the molten solder powder is allowed to self-assemble and grow in the vicinity of the electrically-conductive particles, which leads to a formation of connections or bumps.
摘要:
A flip chip mounting body in which a circuit substrate having a plurality of connection terminals and an electronic part (semiconductor chip) having a plurality of electrode terminals are aligned face to face with each other, with a resin composition composed of solder powder, a resin and a convection additive being sandwiched in between, while a means such as spacers is interposed in between so as to provide a uniform gap between the two parts, or the electronic part (semiconductor chip) is placed inside a plate-shaped member having two or more protruding portions, so that the solder powder is allowed to move through boiling of the convection additive and to be self-aggregated to form a solder layer, thereby electrically connecting the connection terminals and the electrode terminals; and a mounting method for such a mounting body.
摘要:
A flexible substrate comprises a film, a first insulating resin layer on a front face of the film, a second insulating resin layer on a rear face of the film, a front-sided wiring pattern embedded in the first insulating resin layer, and a rear-sided wiring pattern embedded in the second insulating resin layer. A surface of the front-sided wiring pattern is flush with a surface of the first insulating resin layer, and a surface of the rear-sided wiring pattern is flush with a surface of the second insulating resin layer. A part of at least one of the front-sided wiring pattern and the rear-sided wiring pattern is dented toward a part of the other of the at least one of the front-sided wiring pattern and the rear-sided wiring pattern such that a portion of the front-sided wiring pattern and a portion of the rear-sided wiring pattern are jointed to each other to form a junction.
摘要:
[Means for Solving Problem] A semiconductor chip 20 having a plurality of electrode terminals 12 is held to oppose a circuit board 21 having a plurality of connection terminals 11 with a given gap provided therebetween, and the semiconductor chip 20 and the circuit board 21 in this state are dipped in a dipping bath 40 containing a melted resin 14 including melted solder particles for a given period of time. In this dipping process, the melted solder particles self-assemble between the connection terminals 11 of the circuit board 21 and the electrode terminals 12 of the semiconductor chip 20, so as to form connectors 22 between these terminals. Thereafter, the semiconductor chip 20 and the circuit board 21 are taken out of the dipping bath 40, and the melted resin 14 having permeated into the gap between the semiconductor chip 20 and the circuit board 21 is cured, so as to complete a flip-chip mounting body.
摘要:
The flip chip mounted body of the present invention includes: a circuit board (213) having a plurality of connection terminals (211); a semiconductor chip (206) having a plurality of electrode terminals (207) that are disposed opposing the connection terminals (211); and a porous sheet (205) having a box shape that is provided on an opposite side of a formation surface of the electrode terminal (207) of the semiconductor chip (206), is folded on an outer periphery of the semiconductor chip (206) on the formation surface side of the electrode terminal (207) and is in contact with the circuit board (213), wherein the connection terminal (211) of the circuit board (213) and the electrode terminal (207) of the semiconductor chip (206) are connected electrically via a solder layer (215), and the circuit board (213) and the semiconductor chip (206) are fixed by a resin (217). Thereby, the flip chip mounted body with excellent productivity and reliability that can mount the semiconductor chip on the circuit board, and a method and an apparatus for mounting the flip chip mounted body are provided.
摘要:
A process for producing a flexible substrate comprising of a film, an insulating resin layer, and a wiring pattern, said process comprising the steps of: (a) preparing a sheet member comprising, (i) the film, (ii) the insulating resin layer formed on each of a front face of said film and a rear face of said film which face is opposite to said front face, and (iii) a front-sided wiring pattern embedded in said insulating resin layer formed on said front face of said film, and a rear-sided wiring pattern embedded in the insulating resin layer formed on said rear face of said film; and (b) pressing a part of at least one of said front-sided wiring pattern and said rear-sided wiring pattern into the inside of said sheet member so that a part of said front-sided wiring pattern and a part of said rear-sided wiring pattern are jointed to each other to form a junction.
摘要:
A flip chip mounting method includes holding a circuit board (213) and a semiconductor chip (206), aligning the circuit board (213) with the semiconductor chip (206) while holding them with a predetermined gap therebetween, heating the circuit board (213) or the semiconductor chip (206) to a temperature at which solder powder in a solder resin composition (216) formed of solder powder (214) and a resin (215) is melted, supplying the solder resin composition (216) by a capillary phenomenon, and curing the resin (215), wherein the melted solder powder (214) in the solder resin composition (216) is moved through the predetermined gap across which the circuit board (213) and the semiconductor chip (206) are held, and self-assembled and grown, whereby the connection terminals (211) and the electrode terminals (207) are connected to each other electrically. According to this configuration, a flip chip mounting method having high productivity and reliability, which enables a next generation semiconductor chip to be mounted on a circuit board, a mounted body thereof, and a mounting apparatus thereof are provided.
摘要:
The invention involves mounting a solder resin composition (6) including a solder powder (5a) and a resin (4) on the first electronic component (2); arranging such that the connecting terminals (3) of the first electronic component (2) and the electrode terminals (7) of the second electronic component (8) are facing each other; ejecting a gas (9a) from a gas generation source (1) included in the first electronic component (2) by heating the first electronic component (2) and the solder resin composition; and inducing the flow of the solder powder (5a) in the solder resin composition (6) by inducing convection of the gas (9a) in the solder resin composition (6), and electrically connecting the connecting terminals (3) and the electrode terminals (7) by self-assembly on the connecting terminals (3) and the electrode terminals (7). Through this are provided a flip chip packaging method that enables connecting, with high connection reliability, electrode terminals of a semiconductor chip wired with narrow pitch and connecting terminals of a circuit board, and a bump formation method for packaging on a circuit board.
摘要:
[Problem] To provide a flip-chip mounting method and a bump formation method applicable to flip-chip mounting of a next generation LSI and having high productivity and high reliability. [Means for Solving Problem] A semiconductor chip 20 having a plurality of electrode terminals 12 is held to oppose a circuit board 21 having a plurality of connection terminals 11 with a given gap provided therebetween, and the semiconductor chip 20 and the circuit board 21 in this state are dipped in a dipping bath 40 containing a melted resin 14 including melted solder particles for a given period of time. In this dipping process, the melted solder particles self-assemble between the connection terminals 11 of the circuit board 21 and the electrode terminals 12 of the semiconductor chip 20, so as to form connectors 22 between these terminals. Thereafter, the semiconductor chip 20 and the circuit board 21 are taken out of the dipping bath 40, and the melted resin 14 having permeated into the gap between the semiconductor chip 20 and the circuit board 21 is cured, so as to complete a flip-chip mounting body.
摘要:
A flexible substrate comprises a film, a first insulating resin layer on a front face of the film, a second insulating resin layer on a rear face of the film, a front-sided wiring pattern embedded in the first insulating resin layer, and a rear-sided wiring pattern embedded in the second insulating resin layer. A surface of the front-sided wiring pattern is flush with a surface of the first insulating resin layer, and a surface of the rear-sided wiring pattern is flush with a surface of the second insulating resin layer. A part of at least one of the front-sided wiring pattern and the rear-sided wiring pattern is dented toward a part of the other of the at least one of the front-sided wiring pattern and the rear-sided wiring pattern such that a portion of the front-sided wiring pattern and a portion of the rear-sided wiring pattern are jointed to each other to form a junction.