WO2007125789A1 - 接続構造体及びその製造方法 - Google Patents
接続構造体及びその製造方法 Download PDFInfo
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- WO2007125789A1 WO2007125789A1 PCT/JP2007/058418 JP2007058418W WO2007125789A1 WO 2007125789 A1 WO2007125789 A1 WO 2007125789A1 JP 2007058418 W JP2007058418 W JP 2007058418W WO 2007125789 A1 WO2007125789 A1 WO 2007125789A1
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- H05K3/323—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives by applying an anisotropic conductive adhesive layer over an array of pads
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- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
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- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3457—Solder materials or compositions; Methods of application thereof
- H05K3/3485—Applying solder paste, slurry or powder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- connection terminals in which connection terminals are electrically connected and a method for manufacturing the connection structure, and in particular, a highly productive flip chip mounting body and a flip chip mounting method that can be applied to a narrow-pitch semiconductor chip.
- the present invention relates to a connection structure that can be applied to and a manufacturing method of the connection structure.
- solder bumps are formed on the electrode terminals of the LSI chip and are collectively bonded to the electrodes formed on the wiring board via the solder bumps. Is common.
- solder paste made of a mixture of solder powder and flux is solidly applied onto a substrate having an electrode formed on the surface, and the substrate is heated to melt the solder powder, and between adjacent electrodes.
- a technique for selectively forming solder bumps on an electrode with high wettability without causing a short circuit is known (for example, see Patent Document 1).
- Patent Document 1 JP 2000-94179 A
- Patent Document 2 Japanese Patent Laid-Open No. 1-157796
- Patent Document 3 Japanese Unexamined Patent Publication No. 2000-332055
- the conductive particles contributing to conduction between the opposing terminals are: It is limited to a part of the conductive particles contained in the resin.
- the electrode size and pattern dimensions are minimized by increasing the number of pins and the pitch of the connection terminals. Since the number of trapped conductive particles decreases, it is difficult to realize a stable conduction state.
- the adjacent terminal is a connecting terminal that is adjacent to the opposing direction of the opposing terminal in the horizontal direction. If the opposing direction of the opposing terminal is the vertical direction, the adjacent terminal is in a horizontal direction perpendicular thereto.
- the connection structure of the present invention that can be applied to a mounting body or the like has been made to solve the above-described problems. For example, a next-generation semiconductor chip that requires a higher number of pins and a smaller pitch is used. It is an object of the present invention to provide a connecting structure and a manufacturing method of the connecting structure that can be mounted on a wiring board and can be applied to a mounting body and a mounting method with excellent productivity and reliability.
- connection structure of the present invention includes:
- a connection structure comprising:
- connection terminals of the first plate-like body and the second plate-like body are connection terminals formed so as to protrude on the first plate-like body surface or the second plate-like body surface, respectively.
- the conductive material is integrated so as to cover at least a part of the side surfaces of the connection terminals of the first plate-like body and the connection terminals of the second plate-like body facing each other. Electrically connected by the conductive material, and
- a conductive substance is further interposed in at least one part between the opposing surfaces of the connection terminals of the first plate and the second plate, and / or the first plate.
- a connection structure in which a plate-like body and a connection terminal of the second plate-like body face each other.
- connection structure according to (1) above may be provided on the side surfaces of the connection terminals of the first plate-like body and the connection terminals of the second plate-like body facing each other.
- the conductive substance integrated so as to cover at least a part is made of a powdery conductive substance, and the opposing conductive terminals are electrically connected to each other when the powdery conductive substance comes into contact with each other. It is preferable to be connected V.
- connection structure according to (1) at least a side surface of the connection terminal of the first plate-like body and the connection terminal of the second plate-like body facing each other.
- the conductive material accumulated so as to cover a part is melted and solidified to form a connection body, It is preferable that the connection terminals facing each other are electrically connected by a connecting body.
- connection terminal of the first plate and the connection surface of the second plate are interposed between opposing surfaces.
- the conductive material is embedded in a part of the connection terminal of the first plate and the connection terminal of the second plate.
- connection structure between the connection terminals of the first plate-like body and the connection terminals of the second plate-like body facing each other, It is preferable that the conductive material intervening is sandwiched between a part of the surface of the connection terminal of the first plate-like body and the connection terminal of the second plate-like body. U ,.
- connection terminal of the first plate-like body opposed to At least a part of the conductive material interposed between the surfaces of the connection terminals of the second plate-like body is melted and solidified, so that the connection terminal surfaces of the first plate-like body and the second plate-like body It is preferable that at least a part of the surface of the connection terminal is wet.
- connection terminal of the first plate-like body opposed to the second plate and the second plate It is preferable that the side surfaces of the connection terminals of the body are covered with the conductive material.
- connection terminals of the first plate-like body facing each other. It is preferable that the side surfaces of the connection terminals of the second plate-like body are all covered with the connection body in which the conductive substance is melted and solidified.
- the first plate-like body includes an inorganic filler and a thermosetting resin. It is preferable that the plate is a plate-like body.
- the first plate-like body includes a glass fiber woven fabric, a glass fiber non-woven fabric, a heat resistant At least one reinforcing material selected from woven fabrics of organic fibers and non-woven fabrics of heat-resistant organic fibers and the reinforcing materials. It is preferable to adopt an embodiment in which the plate-shaped body is composed of a soaked thermosetting resin composition.
- the first plate-shaped body includes a flexible substrate including a film and a wiring pattern cover. It is preferable that the plate-like body is used.
- the second plate-like body may be an active element. Favored ,.
- the second plate-like body may be a semiconductor chip.
- the second plate-like body may be a semiconductor chip.
- the second plate-like body is a glass fiber woven fabric or glass fiber.
- a plate-like body comprising at least one reinforcing material selected from a nonwoven fabric, a heat-resistant organic fiber woven fabric, and a heat-resistant organic fiber nonwoven fabric, and a thermosetting resin composition impregnated in the reinforcing material, Or it is preferable to set it as the aspect which is a plate-shaped body which consists of what contains an inorganic filler and a thermosetting resin.
- the second plate-like body is a flexible film and a wiring pattern cover. It is preferable that the plate-like body including the substrate is used.
- the conductive material has a single composition. It is preferable to have an embodiment containing at least one of metal particles, solder particles, solder-plated or metal-plated metal particles, and solder-plated or metal-plated resin particles. .
- the conductive material may be composed of two types of conductive materials. Is preferred ⁇ .
- connection structure according to any one of (1) to (17), the connection between the first plate-like body and the second plate-like body.
- the greaves or greaves composition may have a sheet-like or paste-like greaves or greaves composition strength. Be good Good.
- one of the methods for manufacturing a connection structure according to the present invention is a first method in which a wiring pattern having a plurality of connection terminals formed in a convex shape on a plate-like body surface is formed.
- a second plate having at least two or more connection terminals formed in a convex shape on the plate-like body surface is arranged opposite to the plate-like body, and the first plate-like body is connected.
- connection structure that electrically connects a terminal and a connection terminal of the second plate-like body, the connection terminal of the first plate-like body and the connection terminal of the second plate-like body And a first step of bringing at least a part of the opposing surfaces of the connection terminals of the first plate-like body and the connection terminals of the second plate-like body into contact with each other; A second step of supplying a resin composition containing a conductive substance and a convection additive to the gap between the first plate and the second plate; A third step of heating the rosin composition, and in the third heating step, the rosin composition generates convection mainly due to bubbles generated by the convection additive force, thereby adjacent to each other.
- connection structure By integrating at least a part of the conductive material in the resin composition interposed between the connection terminals so as to cover at least a part of the side surfaces of the opposing connection terminals, A method for manufacturing a connection structure comprising electrically connecting a connection terminal of the first plate-like body and a connection terminal of the second plate-like body facing each other.
- connection terminal of the first plate-like body facing the second and the second connection terminal The conductive material accumulated so as to cover at least part of the side surface of the connection terminal of the plate-like body is further melted and solidified to form a connection body, and the connection body connects the first plate-like body. It is preferable that the terminal includes an electrical connection between the terminal and the connection terminal of the second plate-like body.
- connection terminals of the first plate-like body facing each other The conductive substance accumulated so as to cover at least a part of the side surface of the connection terminal of the second plate-like body becomes a powdery conductive substance force, and the powdery conductive substance comes into contact with each other.
- the connection terminal of the first plate-like body and the connection terminal of the second plate-like body It is preferable to adopt an embodiment.
- connection structure of the present invention a wiring pattern having a plurality of connection terminals formed in a convex shape on a plate-like body surface is formed.
- a second plate having at least two or more connection terminals formed in a convex shape on the surface of the plate is disposed opposite to the first plate, and the first plate
- a resin composition comprising a conductive substance and a convection additive on the first plate-like body And connecting the first plate-like body by aligning the connection terminal of the first plate-like body and the connection terminal of the second plate-like body.
- the conductive material is self-assembled so as to cover at least a part of the side surfaces of the opposing connection terminals, and the connection terminals of the opposing first plate-like body and the A method for producing a connection structure comprising electrically connecting connection terminals of a second plate-like body.
- connection terminals of the first plate-like bodies facing each other The conductive material sandwiched between the connection terminals of the second plate-like body is embedded in a part of the connection terminals of the first plate-like body and the connection terminals of the second plate-like body. It is preferable to adopt an embodiment.
- connection terminal of the first plate and the connection terminal of the second plate-shaped body are melted and solidified, and the surface of the connection terminal of the first plate-shaped body and the second plate-shaped It is preferable that the surface of the body connection terminal is wetted with the conductive material.
- connection terminal is electrically connected to the connection terminal of the second plate-like body.
- the first plate-like body is a glass fiber weave.
- the first plate-like body may include a film and a wiring pattern. It is preferable that the plate-shaped body includes a flexible substrate.
- the second plate-like body is an active element. It is preferable to set it as an aspect.
- the second plate-like body is a semiconductor chip. It is preferable to set it as an aspect.
- the second plate-shaped body is made of glass fiber woven fabric, glass A plate-like body comprising at least one reinforcing material selected from a nonwoven fabric of fibers, a woven fabric of heat-resistant organic fibers, and a nonwoven fabric of heat-resistant organic fibers, and a thermosetting resin composition impregnated in the reinforcing material, or It is preferable that the plate is made of a material containing an inorganic filler and a thermosetting resin.
- the second plate-like body may include a film and a wiring pattern. It is preferable that the plate-shaped body includes a flexible substrate.
- the convective additive may include the third step or in step vi) It is preferable to adopt an embodiment that is an additive that generates bubbles when the resin composition is heated to cause convection in the resin composition.
- the conductive material has a single-component metal force. It is preferable that at least one of metal particles, solder particles, soldered or metal-plated metal particles, and solder-plated or metal-plated resin particles is included.
- the first step is performed in advance before the first step. It is preferable that the method further includes a step of supplying a second conductive granular material to a facing surface of any one of the connection terminal of the plate-like body and the connection terminal of the second plate-like body.
- the second conductive material has a melting point different from that of the conductive material used in the second step. It is preferable to use an embodiment that is a conductive substance.
- the connection structure of the present invention and the method for manufacturing the connection structure, the second plate-like body (for example, the semiconductor chip) and the first plate-like body (for example, the wiring board) can be reliably connected. It is possible to realize a connection structure such as a mounting body with excellent reliability that guarantees a smooth connection and insulation between adjacent terminals that can handle narrow pitches. Because the connection state between the connection terminals of the opposing second plate (including the electrode terminals) and the connection terminals of the first plate can be made uniform, the yield is high and manufacturing efficiency is improved. The effect is also produced.
- connection structure and the manufacturing method thereof the conductivity in the resin composition containing the conductive material supplied to the gap between the first plate-like body and the second plate-like body.
- the substances are brought together so as to cover the side surfaces of the respective terminals, thereby making contact with each other, and the connection terminals of the first plate body and the connection terminals of the second plate bodies facing each other are electrically connected.
- the conductive material remaining between adjacent terminals can be determined by preliminarily setting the ratio of the conductive substance accumulated in the side surface of the terminal in the resin composition to an optimum amount for electrical connection. Residual amounts of material can be substantially eliminated, thereby improving the insulation between adjacent terminals.
- connection structure such as a highly reliable mounting body that achieves both electrical connection and insulation.
- the conductive material contained in the fat thread and the composition can be used effectively, and the necessary conductive material is required. Can also produce economic effects.
- connection structure and the manufacturing method thereof the conductive material in the resin composition supplied to the gap between the first plate and the second plate is opposed to the first.
- electrical conduction between the opposing terminals can be obtained.
- Conductive substances that do not contribute to conduction remain in the resin composition between adjacent terminals, but after that, the conductive substances in the remaining resin composition are accumulated so as to cover the side surfaces of the terminals. Further, by effectively using the conductive material, it is possible to obtain an electrical connection between the opposing terminals.
- the first plate-like body and the second plate-like body are electrically connected via the conductive material sandwiched between the opposing terminal surfaces, and at the same time are integrated on the side surfaces of the terminals. Therefore, a stable electrical connection with lower resistance between the opposing terminals can be realized.
- the conductive material remaining between adjacent terminals without contributing to conduction is collected on the side surface of each terminal. Stacking and using it effectively can solve the problem that the residual conductive material causes a short circuit between adjacent terminals. Residual conductive substances that cause short circuits are forcibly accumulated on the side surfaces of each terminal, so that the insulation between adjacent terminals can be improved, so a highly reliable connection structure such as a mounting structure can be created. Can be realized.
- connection structure and the manufacturing method thereof are suitable for, for example, a mounting body and a mounting method of a semiconductor chip with a narrow pitch.
- the resin composition remaining between adjacent terminals can be cured using an underfill material, whereby the first plate-like body and the second plate-like body can be cured.
- the conductive materials integrated on the side surfaces of the terminals are electrically connected, and further, the conductive material is sandwiched between the surfaces of the terminals!
- the conductive material sandwiched between the surface of each terminal and the conductive material accumulated on the side surface of each terminal are electrically connected to each other, and Therefore, reliable mechanical holding of the first plate and the second plate and reliable insulation between adjacent terminals are maintained.
- connection structure manufacturing method the electrical connection between the opposing terminals of the first plate-like body and the second plate-like body, and the first plate-like body of the second plate-like body. Since it is possible to fix all of them together, it is possible to realize a connection structure typified by a highly productive mounting body.
- the conventional flip chip mounting method after mounting the semiconductor chip on the wiring board, it was necessary to inject an underfill material between the semiconductor chip and the wiring board in order to fix the semiconductor chip to the wiring board.
- such a step of injecting such an underfill material is not particularly required. Therefore, when the number of manufacturing steps is reduced and the yield is improved, it is possible to produce the effect.
- the distance between the opposing terminals is increased.
- FIG. 1 is a schematic process cross-sectional view illustrating a mounting body and a mounting method according to Embodiment 1 of the present invention.
- FIG. 2 is a partially enlarged cross-sectional view of the mounting body according to Embodiment 1 of the present invention.
- FIG. 3 is a partially enlarged cross-sectional view showing a modified example of the mounting body according to Embodiment 1 of the present invention.
- FIG. 4 is a schematic cross-sectional process diagram illustrating a mounting body and a mounting method according to Embodiment 2 of the present invention.
- FIG. 5 (a) is a partially enlarged cross-sectional view of the mounting body according to Embodiment 2 of the present invention, and FIG. 5 (b) is buried between the surface of each terminal in the mounting body shown in FIG. 5 (a).
- FIG. 5 is a partial enlarged cross-sectional view showing a state where the conductive material sandwiched between the conductive material and the conductive material accumulated on the side surfaces of each terminal are melted and solidified.
- FIGS. 6 (a) to 6 (d) are partially enlarged sectional views showing modified examples of the mounting body according to Embodiment 2 of the present invention.
- 10 is a mounting body in the first embodiment
- 101 is a first plate-like body
- 102 is a connection formed in a convex shape on the first plate-like body surface.
- 103 a second plate-like body, 104 a convex shape formed on the surface of the second plate-like body, and an electrode terminal which is a form of a connection terminal, 105 a conductive substance, 106 a grease
- the composition, 107 is air bubbles
- 108 is the conductive material 105 accumulated on the sides of the opposed terminals 102 and 104
- 109 is the cured resin composition 106
- 112 is the convective additive.
- the mounting body 10 has a second plate-like body 103 having a plurality of electrode terminals 104 arranged to face a plurality of connection terminals 102 formed on the first plate-like body 101. Are electrically connected by a conductive material 105 (108).
- FIGS. 1 (a) to 1 (d) show the main manufacturing process and completion of the mounting body 10 according to the first embodiment. It is a schematic sectional drawing at the time.
- a first plate-like body 101 for example, a glass epoxy substrate or the like
- a desired wiring pattern (not shown) in which a plurality of connection terminals 102 are formed.
- Circuit board and a second plate 103 having a plurality of electrode terminals 104 (for example, a semiconductor chip) are opposed to each other so that the connection terminals 102 of the first plate 101 and the second plate It arrange
- the first plate-like body 101 may be a substrate including an inorganic filler (for example, aluminum nitride, silica, hydroxyaluminum hydroxide) and a thermosetting resin (for example, epoxy resin).
- the second plate 103 is composed of a thermosetting resin (for example, epoxy resin, phenol resin, unsaturated polyester resin) and its reinforcing material resin, which may be an active element or a semiconductor chip (for example, a bare chip). It can be a substrate.
- a thermosetting resin for example, epoxy resin, phenol resin, unsaturated polyester resin
- its reinforcing material resin which may be an active element or a semiconductor chip (for example, a bare chip). It can be a substrate.
- an electronic component for example, chip component
- the first plate-like body 101 and the second plate-like body 103 may be rigid printed boards or flexible printed boards.
- the electrode terminal 104 may have a bump prepared in advance on an electrode pad.
- the connection structure of the present invention and the manufacturing method thereof can be applied to the case where the first plate-like body and the second plate-like body are both rigid printed circuit boards or the case where both are flexible printed circuit boards. .
- connection terminal 102 is formed in a convex shape on the first plate surface
- electrode terminal 104 is also formed on the second plate surface. It is formed in a convex shape.
- the convex shape has a cross-sectional shape cut in the thickness direction as shown in the figure, such as rectangular, square, trapezoidal, parallelogram, etc., and the opposing surfaces are relatively flat (thickness exceeds 2Z3) It is preferable that the surface is relatively finely roughened in the sense that there is no unevenness with such a large level difference. In addition, it is preferable that the height of the facing surfaces of the plurality of connection terminals 102 facing the electrode terminals 104 is substantially the same and substantially parallel to the first plate surface.
- the convex shape is such that the cross-sectional shape of the section cut in the thickness direction as shown in the figure is rectangular, square, trapezoidal, parallelogram, etc., and the opposing surfaces are relatively flat ( The surface should be relatively fine and rough in the sense that there should be no irregularities with a large height difference exceeding 2Z3 in thickness.
- the heights of the opposing surfaces of the plurality of electrode terminals 104 are preferably substantially the same and substantially parallel to the second plate-like body surface. In either case, the shape of the terminal surface on the opposite side may be a curved surface as long as the object of the present invention can be achieved.
- the fats in conductive material 105, convection additive 112, and grease composition 106 used in the mounting body or the mounting method of the present invention are not particularly limited, but are as follows. Materials can be used.
- Conductive substance 105 is a substance containing at least one of metal particles, solder particles, solder-plated or metal-plated metal particles, and solder-plated or metal-plated resin particles.
- solder component and metal component of the particles and solder there can be mentioned solder alloys such as Sn-Bi and Sn-Ag, and metals such as Cu, Ag and AgCu.
- the conductive material 105 is accumulated on the surface of the conductive material 108 through contact with each other, so that the conductive material 105 grows on its surface as much as possible. It is preferred that it is evenly dispersed in the rosin composition 106 when not in the state! /.
- the convection additive 112 is an additive added to cause convection in the resin composition 106 by boiling or decomposing when the resin composition 106 is heated to generate bubbles.
- glycerin, wax, isopropyl alcohol, butylacetate, butyl carbitol, ethylene glycol, etc. as boiling evaporating types, decomposition sodium bicarbonate, ammonium metaborate, aluminum hydroxide, dawsonite, barium metaborate, etc. Exemplification can do. Air bubbles and convection generated in the resin composition naturally occur by heating the resin composition supplied between the first plate 101 and the second plate 103. The reason why the convection additive 112 is added to 106 is to further promote the behavior and achieve the object of the present invention.
- the bubbles 107 generated from the convection additive 112 cause convection in the resin composition 106, the conductive material 105 in the resin composition 106 is dispersed, and the resin composition 106 is dispersed by the pressure of the bubbles.
- the effect of being pushed out to the side surfaces of each terminal and being integrated so as to cover at least part of the side surfaces of the opposing connection terminal and electrode terminal is achieved.
- the convective additive 112 hardly remains in the resin composition 106 after the process in which a substance that boils or evaporates by heating is preferred.
- the "convection" of the convection additive means convection as a form of motion, and the convection additive boiled in the rosin composition 106 moves or by the generation of bubbles. Any form of movement may be used as long as it imparts kinetic energy to the conductive substance dispersed in the resin composition 106 and promotes the movement of the conductive substance.
- the resin in the resin composition 106 is, for example, a thermosetting resin such as epoxy resin, phenol resin, or silicone resin, or fluorine resin, polyimide resin, polyamideimide resin, aromatic Heat-resistant resin such as aromatic polyamide resin or light (ultraviolet) curable resin is preferred, and thermoplastics such as polyethylene, polypropylene, polystyrene, acrylonitrile z-metatal resin, and salt resin Coffin can also be used, and materials combining these can be mentioned.
- a thermosetting resin such as epoxy resin, phenol resin, or silicone resin, or fluorine resin
- polyimide resin polyamideimide resin
- aromatic Heat-resistant resin such as aromatic polyamide resin or light (ultraviolet) curable resin
- thermoplastics such as polyethylene, polypropylene, polystyrene, acrylonitrile z-metatal resin, and salt resin Coffin can also be used, and materials combining these can be mentioned.
- the resin composition 106 is heated.
- the heating temperature of the resin composition 106 is higher than the boiling point or decomposition point of the convection additive 112. That is, when the convective additive is a type of convective additive that generates bubbles by boiling and evaporation, the caloric heat temperature is higher than the boiling point of the convective additive, and the convective additive generates bubbles by thermal decomposition.
- the heating temperature is higher than the heating decomposition temperature of the convective additive.
- the rosin composition causes convection mainly due to bubbles generated from the convective additive
- the rosin composition has generated bubbles at least by the heating.
- “when air bubbles are generated by heating, it is in a state in which it can flow” may be a resin composition in a state in which it can flow by force before bubbles are generated by heating. It also means that.
- bubbles 107 are generated between adjacent terminals from the convection additive 112 in the resin composition 106 by heating, and convection occurs in the resin composition 106.
- the movement of the conductive material 105 dispersed in the resin composition 106 is promoted.
- the resin composition 106 containing the conductive substance 105 is self-assembled and pushed out to the side surface of each terminal by the pressure of the generated bubbles 107, and the conductive substance 105 in the self-assembled resin composition 106.
- the terminals are integrated so as to cover the side surfaces of the terminals.
- the connection terminals 102 and the electrode terminals 104 are electrically connected.
- the conductive material 105 contained in the resin composition 106 is accumulated on the side surfaces of the terminals, the resin composition 106 does not contain the conductive material 105, and insulation between adjacent terminals is maintained. I'm leaning.
- the accumulation of conductive substances in a self-assembled manner means that a plurality of conductive substances originally dispersed and present in a resin composition move and come into contact with each other.
- the resin composition 106 remaining between adjacent terminals is further cured or solidified according to the type of resin used, such as heating, light (ultraviolet irradiation) or cooling (in the case of thermoplastic resin).
- Most of the thermosetting resins are not cured by heat, such as heat-resistant resins such as polyimide, so that, for example, molten thermoplastic resins can be made fluid by cooling.
- the term “solidification” is used in the above, including the case of losing and solidifying, but the term “hard ⁇ ” t is a generic term that includes solidification in a different term).
- the resin composition 106 In order to cure the resin composition 106, for example, when the resin of the resin composition 106 is a thermosetting resin, the resin composition 106 is heated to a temperature higher than the temperature at which the resin composition 106 is cured, and then forcedly cooled after curing. Or natural cooling may be performed.
- the cured resin composition 109 fixes or fixes the opposing connection terminal 102 and electrode terminal 104 while maintaining electrical continuity through the conductive material 108, so that the second plate shape
- the electrical connection and mechanical fixation of the body 103 to the first plate-like body 101 can be further ensured. Thereby, the mounting body 10 in which the second plate-like body 103 is mounted on the first plate-like body 101 can be obtained.
- an insulating grease In the case of the present embodiment 1, the first plate 101 and the second plate are cured by curing the remaining resin composition 106. Since 103 is fixed or fixed in the same manner as the underfill material, there is no need for a process of injecting an underfill material or the like, and it is possible to omit this process. It can be avoided. If necessary, an underfill material (not shown) is poured into the gap between the first plate body and the second plate body and is cured, so that the second plate body 103 is made into the first plate body 103. Of course, it may be fixed to the plate-like body 101.
- the mounting body 10 and its mounting method are characterized in that the connecting terminal 102 of the first plate-like body 101 and the electrode terminal 104 of the second plate-like body 103 are arranged so as to face each other, and the force is also a conductive substance.
- the resin composition 106 containing 105 and the convection additive 112 is supplied, and bubbles 107 are generated from the convection additive 112 so that the conductive material 105 is accumulated on the side surfaces of the terminals. That is, it is contained in the resin composition 106 between the first plate-like body 101 and the second plate-like body 103.
- the heating temperature can be suppressed, so that damage to the first plate-like body 101 and the second plate-like body 102 given by heating can be reduced. it can.
- an oxide film removing agent that removes the acid film on the surface of the conductive material to be melted is not necessarily required, the corrosion of the conductive material or the plate caused by the residue of the oxide film removing agent is not necessary. It also has the characteristics that it can suppress adverse effects on reliability such as insulation resistance deterioration of the body, and can omit the cleaning process for removing the residue of the acid film removal agent.
- V is connected to the connection structure of the connection terminal of the first plate-like body and the connection terminal of the second plate-like body between the side surfaces of the connection terminals adjacent to each other on the basis of the plane direction of the plate-like body.
- 110 indicates the conductive material 108 which has been once melted and then solidified.
- FIG. 2 is a partially enlarged view showing a state where the conductive material 105 is integrated on the side surfaces of the connection terminal 102 and the electrode terminal 104 (the integrated conductive material 108) of the mounting body 10 according to the first embodiment.
- FIG. 2 is a large cross-sectional view showing an enlarged partial cross-sectional view of one of the connection terminals 102 and electrode terminals 104 existing in FIG.
- the connection terminal 102 and the electrode terminal 104 are electrically connected by the conductive material 108 integrated on the side surfaces of each terminal, and the gap between the first plate-like body 101 and the second plate-like body 103. Cure the residual grease composition 106 (cured grease composition 109) or apply an underfill material.
- the resin composition 109 is fixed and the insulating property is maintained. 109 is a force indicating the cured resin composition. In this state, the conductive substance is accumulated on the side surfaces of the connection terminal 102 and the electrode terminal 104 as described above. Therefore, insulation between adjacent terminals is maintained.
- a mounting body 10 that uses a material having a melting point lower than the temperature applied in the manufacturing process for the conductive material 108 integrated on the side surfaces of each terminal, or has completed electrical connection and sealing.
- the accumulated conductive material 108 is melted and then solidified, so that the connection body of the melted and solidified conductive material 110 is connected to the side surface of each terminal.
- the mounting body 11 in which the second plate-like body 103 is mounted on the substrate 101 which is the first plate-like body.
- An even lower resistance connection can be realized by melting the accumulated conductive material 108 (molten and solidified conductive material 110).
- the conductive material 105 When the conductive material 105 is melted in the course of the manufacturing process, it may be partially melted at the time of being accumulated on the side surfaces of the terminals or may be melted at the time of being accumulated on the side surfaces of the terminals. May start.
- the conductive material is melted in this way, as a matter of course, in order to reduce damage to the target connection structure due to heat necessary for melting, the conductive material used is The metal material constituting the part to be melted is a metal material that melts at a relatively low temperature such as solder.
- the mounting body 11 produced in this way has flexibility by the fixed portion of the first plate body 101 and the second plate body 103 forming a connection body. It works to relieve stress caused by thermal shock and has high reliability.
- the electrical connection is performed by metal bonding (molten / solidified conductive material 110) by melting and solidifying the conductive material 108, a strong connection state can be maintained.
- the remaining resin composition 106 or the underfill material is cured (cured resin composition 109) on the side surface of the conductive material 110, the stress is applied to the thermal stress of the conductive material 110. It has the function of alleviating plasticity and suppressing plastic deformation that occurs in the conductive material 108, and an extremely reliable mounting body can be obtained.
- FIG. 3 shows a state in which all of the conductive material 108 is melted and solidified (melted and solidified conductive material 110).
- the mounting body 11 in the modified example of the first embodiment is conductive. Nature It is not limited to melted and solidified quality. For example, in a state where a part of the conductive material 108 is not melted, only the surface of the conductive material 108 is melted and solidified to form a metal bond between the conductive materials 108 or at the interface between the conductive material 108 and each terminal side surface. It also includes situations that occur.
- the molten conductive material 108 (110) may be in a state in which the molten conductive material 108 (110) spreads in the gap between the surfaces of the connection terminal 102 and the electrode terminal 104 that are in contact with each other.
- FIG. 1 shows the case where the conductive material is accumulated on all the side surfaces of the respective terminals prepared in the plate-like body and is preferable! /. It is not necessary for all terminals on the body to have the structure shown in FIG. 2 or the enlarged cross-sectional view of FIG. 3, and some of the terminals have the structure of the present invention. Moyo!
- the second conductive substance (not shown) ) May be supplied to either the connection terminal 102 or the electrode terminal 104 in advance, the second conductive material may have a melting point different from that of the first conductive material 105.
- the raw material shape and structure of the second conductive material before undergoing the melting and solidification treatment of the second conductive material are the same as the first conductive material described above, such as metal particles, solder particles, It may be a substance containing at least one of solder plating and metal-plated metal particles and solder-plated and metal-coated resin particles.
- the conductive material 105 is applied to the surface of each terminal. Steps to improve wettability, or change the shape of the conductive material 105 or the side of each terminal (for example, roughening the surface or roughening the surface), or forming a functional thin film on the surface (For example, by positively charging the surface or making it hydrophilic, etc.) by utilizing physical and chemical effects such as electrostatic interaction, metal affinity, etc.
- FIGS. 4 (a) to 4 (e) are schematic cross-sectional views of the mounting body 12 in the second embodiment during the main manufacturing process and when completed.
- reference numeral 111 denotes the conductive material 105 that is sandwiched between the surfaces of the connection terminal 102 and the electrode terminal 104 and embedded.
- the mounting body 12 according to the second embodiment has a configuration in which the conductive material 111 interposed between the surfaces of the connection terminal 102 and the electrode terminal 104 and the conductive material 108 integrated on the side surface of each terminal are electrically connected. Have.
- a resin composition containing a conductive substance 105 and a convection additive 112 on a first plate-like body 101 on which a plurality of connection terminals 102 are formed. 106 is supplied. It should be noted that the same effect can be obtained even if the rosin composition 106 is previously applied to the second plate-like body 103 side. Further, in FIG. 4 (a), the rosin composition 106 is illustrated as a pasty rosin composition, but the rosin composition 106 of Embodiment 2 is not limited to this, for example, a sheet-like, It may be a jelly composition like a jelly.
- the second plate body 103 having the electrode terminals 104 facing the connection terminals 102 of the first plate body 101 is replaced with the first plate body. Pressurize toward the 101 side with a certain force and hold the conductive material 105 dispersed in the resin composition 106 so as to be sandwiched between the surfaces of the connection terminal 102 and the electrode terminal 104. . Inserted between the terminals The connection terminal 102 and the electrode terminal 104 are electrically connected by the conductive material 111 thus formed.
- the pressure applied to the second plate-like body 103 in order to sandwich the conductive material 105 between the opposing terminals is such that the gap between the opposing terminals is fixed so as to be equal to or smaller than the particle size of the conductive material 105.
- the conductive material 111 does not have to be embedded in the surface of each terminal.
- the gap between the opposing terminals may be fixed so that a plurality of conductive substances interposed between the opposing terminal surfaces are sandwiched in contact with each other. In this state, the resin composition 106 is heated.
- bubbles 107 are generated between adjacent terminals from the convection additive 112 in the resin composition 106 by heating, and the convection is generated in the resin composition 106.
- the resin composition 106 containing the conductive substance 105 is self-assembled to the side surfaces of the terminals by the pressure of the generated bubbles 107, and the conductive substance 105 in the self-assembled resin composition 106 is As shown in Fig. 4 (e), stack the terminals so that the side faces are covered.
- the connection terminal 102 and the electrode terminal 104 are electrically connected. Therefore, in the mounting body 12 according to the second embodiment, the first plate-like body 101 and the second plate-like body 103 are electrically connected via the conductive substance 111 sandwiched between the terminal surfaces. At the same time, they are electrically connected via the conductive material 108 integrated on the side surfaces of the terminals. At the same time, since the conductive material 105 in the resin composition 106 accumulates on the side surfaces of the terminals, the resin composition 106 interposed between adjacent terminals does not contain the conductive material 105. Will maintain insulation
- the resin composition 106 remaining between adjacent terminals is cured in accordance with the type of resin used, such as heating, light (ultraviolet irradiation), or cooling.
- the cured resin composition 109 fixes or fixes the connection terminal 102 and the electrode terminal 104 while maintaining electrical continuity with the conductive substance 111 and the conductive substance 108.
- the electrical connection and mechanical fixation of 103 to the first plate-like body 101 can be further ensured. Thereby, the mounting body 12 in which the second plate-like body 103 is mounted on the first plate-like body 101 can be obtained.
- the resin composition 106 is previously applied on the surfaces of the first plate-like body 101 and the connection terminal 102, whereby the first plate
- the step of injecting and filling the resin composition 106 into the gap between the sheet-like body 102 and the second plate-like body 103 can be omitted, so that the restriction of viscosity and the like is reduced, and the range of material selection can be expanded.
- the conductive material 105 (111) is interposed between the connection terminal 102 and the electrode terminal 104, so that the gap between the opposing terminals is increased. This is different from the first embodiment in that electrical connection with lower resistance is performed.
- the mounting body 12 and its mounting method are characterized in that the second plate-like body 103 is pressurized and the conductive material 105 is sandwiched between the surfaces of the terminals to ensure electrical continuity between the opposing terminals.
- the conductive material 105 that does not contribute to conduction is accumulated on the side surfaces of the terminals by the bubbles 107 generated from the convection additive 112. That is, electrical conduction between the opposing terminals has already been obtained by sandwiching the conductive material 105 between the surfaces of the connection terminal 102 and the electrode terminal 104, and then the convection contained in the resin composition 106 is obtained.
- the bubbles 107 generated by the additive 112 cause convection in the resin composition 106, and the conductive material 105 in the resin composition 106 remaining between adjacent terminals is forcibly accumulated on the side surfaces of the terminals.
- the conductive material 105 that causes a short circuit between adjacent terminals to improve insulation it is further improved by electrically connecting the opposing terminals via the integrated conductive material 108.
- an electrical connection with high reliability can be obtained.
- the conductive material 105 is accumulated on the side surfaces of each terminal to electrically connect the opposing terminals
- the conductive material 105 is provided between the surfaces of the terminals. Electrical continuity has already been obtained by being sandwiched between the terminals, and a better and more reliable electrical connection can be obtained through the conductive material 108 integrated on the side surface of each terminal.
- FIG. 5 (a) shows that the conductive material 105 is sandwiched between the surfaces of the connection terminal 102 and the electrode terminal 104 of the mounting body 12 in the present embodiment 2 so that the remaining conductive material is present.
- Partially enlarged cross section showing a state in which the resin composition 106 accumulated on the side surfaces of each terminal by the convection additive 112 and interposed in the gap between the first plate 101 and the second plate 103 is cured. It is a figure.
- FIG. 5 (a) shows that the conductive material 105 is sandwiched between the surfaces of the connection terminal 102 and the electrode terminal 104 of the mounting body 12 in the present embodiment 2 so that the remaining conductive material is present.
- Partially enlarged cross section showing a state in which the resin composition 106 accumulated on the side surfaces of each terminal by the convection additive 112 and interposed in the gap between the first plate 101 and the second plate 103 is cured. It is a figure.
- connection terminal 102 and the electrode terminal 104 are electrically connected by the conductive material 111 sandwiched between the surfaces of the terminals, and at the same time, the powder is applied to the side surfaces of the terminals in the subsequent process. Further electrical connection is made by the conductive material 108 integrated in a shape, so that stable electrical conduction with low resistance is obtained. Further, the gap between the first plate-like body 101 and the second plate-like body 103 is formed by curing the residual resin composition 106 without containing the conductive material 105, or by injecting an underfill material, By being cured, it is fixed with the cured resin composition 109, so that the first plate 101 and the second plate 103 are reliably mechanically held and reliable between adjacent terminals. Insulation is maintained!
- FIG. 5 (b) shows the conductive material 111 sandwiched between the surface of each terminal in the mounting body 12 shown in FIG. 5 (a) and the conductive material integrated on the side surface of each terminal.
- FIG. 4 is a partially enlarged cross-sectional view showing a state where a substance 108 is melted and solidified.
- a conductive material having a melting point lower than the temperature applied in the manufacturing process is used, or an electric material is used.
- the package 12 that has been connected and sealed is heated until the melting point of the conductive material 105 (108, 111) is exceeded, thereby melting the conductive material 108 integrated with the embedded conductive material 111. Then, the second plate 103 is mounted on the first plate 101 when the molten and solidified conductive material 110 is formed between the terminal surfaces and the side surfaces of the terminals by solidification.
- the body 13 can be obtained, and a highly reliable electrical connection with low resistance can be realized.
- the mounting body 14 includes the conductive material 105 contained in the resin composition 106 with the connection terminal 102 of the first plate-like body 101 and the second terminal 102.
- the plate 103 is sandwiched between the surface of the electrode terminal 104 and the electrode terminal 104 so as not to be embedded (the conductive material 111 sandwiched), and the conductive material 105 remaining between adjacent terminals is accumulated on the side surfaces of the terminals (facing each other).
- Connection terminals and electrodes Conductive substance 108 accumulated on the side surface of the terminal, and the resin composition 106 interposed in the gap between the first plate 101 and the second plate 103 is cured (cured resin composition 109 FIG.
- the cured resin composition 109 does not contain the conductive material 105, and the adjacent terminals are insulated from each other. Is maintained.
- FIGS. 6B, 6C, and 6D are partially enlarged cross-sectional views for explaining the above-described modified embodiments.
- the mounting body 15 [see FIG. 6B], the mounting body 16 [ FIG. 6 (c)] shows that the conductive material 108 accumulated on the side surfaces of the terminals in the mounting bodies 12 and 14 and the conductive material 111 interposed between the opposing terminals are melted and the surface of each terminal! , Spread and solidify on the side of each terminal!
- FIG. 5 is a partially enlarged cross-sectional view showing a state (molten / solidified conductive material 110).
- Conductive material 1111 that is sandwiched or not buried between each terminal surface and conductive material 108 that is accumulated on each terminal side surface, and melting point that is higher than the temperature applied in the above manufacturing process.
- the embedded body 12 and the mounted body 14 that have been electrically connected and sealed are heated to a temperature exceeding the melting point of the conductive material 105 (108, 111).
- the conductive material 108 accumulated with the conductive material 111 is melted, wetted and spread on the surface of the terminal, and then solidified, the molten and solidified conductive material 110 is formed between the terminal surfaces and on the side surfaces of the terminals.
- the mounting body 15 and the mounting body 16 in which the second plate-like body 103 is mounted on the first plate-like body 101 can be obtained.
- the conductive material 108 accumulated on the side surfaces of each terminal and the conductive material 111 interposed between the opposing terminals are melted, spread, and solidified.
- all of the conductive materials 108 and 111 on the side surfaces of the terminals are completely melted and wetted and solidified, or part of the conductive materials 108 and 111 are melted and wetted and solidified, or the conductive material is conductive.
- the mounting bodies 15 and 16 are melted and solidified conductive materials 110 and 111, even if only the surfaces of the conductive materials 108 and 111 are melted, spread, and solidified to form metal bonds at their interfaces. Melting ⁇ Not limited to solidification! ,.
- the process described at the end of the first embodiment is performed, or the added oxide film is removed.
- % By weight of the agent or convection additive with respect to the resin composition, or the conditions such as heating temperature and heating time. By changing the conditions, it is possible to easily spread the conductive material 105 on each terminal surface or each terminal side surface.
- the conductive material 111 between the opposing terminals is melted, and the conductive material 108 accumulated on the side surfaces of the terminals may not be melted.
- the conductive material 111 sandwiched between the terminals facing each other tends to exfoliate when heated because the surface oxide film covering and covering the conductive material is easily peeled off when pressure is applied from the surface of the terminal. Therefore, only a part or the whole of the conductive material 111 between the opposing terminals is melted, and the conductive material 108 accumulated on the side surface of each terminal is melted, and the connection structure in the state is manufactured. It can be done.
- the mounting body 17 [see FIG. 6 (d)] shows a state in which the conductive materials 108 and 111 between the opposing terminals or on the side surfaces of each terminal are melted and integrally solidified.
- FIG. That is, in FIG. 6 (c), the conductive materials 108 and 111 are melted and united and solidified.
- a process as described at the end of the first embodiment is performed in order to easily spread the conductive material on each terminal surface and each terminal side surface.
- the amount of the resin composition 105 applied to the plate-like body 101 is adjusted to an amount suitable for conditions such as the height (thickness) of each terminal, the distance between opposing terminals, and the average particle size of the conductive material. By doing so, the mounting body 17 can be manufactured.
- the average particle size of the powdery conductive material 105 used in the present invention is the height (thickness) of each of the connection terminal 102 and the electrode terminal 104, the area of the facing surface, the adjacent connection terminal or electrode. Since it varies depending on the pitch between the terminals and the like, it is generally difficult to specify, but usually a range of 0.1-100 / ⁇ ⁇ is preferably used, and a range of 5-30 / ⁇ ⁇ is more preferable.
- the height (thickness) of each of the connection terminal 102 and the electrode terminal 104 is preferably 1 to 70 m, and more preferably 5 to 35 ⁇ m. It can be adjusted as appropriate depending on the diameter.
- the distance between the facing terminals is preferably 0 to: LOO / zm, and can be appropriately adjusted depending on the height of each terminal, the particle size of the conductive material, and the like.
- the conductive material having a specific average particle size described above or shown in the examples and the like described later has a particle size distribution, so that it is larger than the specified average particle size. Or, a conductive material having a small particle diameter is included. Therefore, when the plate-like body is pressed, the conductive material may be embedded in the surface between the terminals, or may be sandwiched, or may be crushed by the opposing terminal surface, or may be interposed between the opposing terminals. Some of them keep their state.
- FIGS. 4, 5, and 6 the conductive materials sandwiched or embedded between the opposing terminals are described as being arranged one by one in the horizontal direction. Between the terminals, there are two or more powdered conductive materials sandwiched in the vertical direction, embedded conductive materials that are buried, or crushed by the opposing terminal surfaces. May be.
- the conductive substances accumulated on the side surfaces are not limited to the state where they are arranged one by one in the vertical direction.
- the distance between the terminals is larger than the distance between the opposing terminals. Increasing the total height (thickness), or reducing the distance between the terminals facing each other than the average particle diameter of the conductive material, increases the contact establishment of the conductive material to the side of each terminal You may design.
- the average particle size of the conductive material is calculated by converting the particle size distribution of the powder from the scattered light intensity distribution by the laser light scattering method.
- the laser diffraction particle size distribution analyzer SALD-3000J: Shimadzu Corporation
- Measurement was carried out by Seisakusho.
- the mounting bodies 15, 16 and 17 manufactured in this manner have a fixed portion between the first plate body 101 and the second plate body 103, and are flexible due to thermal shock or the like. It works to relieve stress and has high reliability.
- the electrical connection is performed by metal bonding (melted / solidified conductive material 110) by melting and solidifying the conductive material 108, a strong connection state can be maintained.
- the conductive material wets and spreads on the surface between the opposing terminals and the side surfaces of each terminal, or is integrated, so that the effect of reducing the resistance of the connecting portion and improving the reliability can be obtained. it can.
- thermosetting resin As the resin composition containing a conductive substance and a convection additive, a thermosetting resin has been described as an example. However, a heat-resistant resin that is a resin other than a thermosetting resin and a thermoplastic resin. A resin, a photocured resin, or a combination of these can also be used.
- thermosetting resin includes, for example, epoxy resin, phenol resin, cyanate resin.
- heat resistant resin examples include polyimide resin, polyamideimide resin, and aromatic polyamide resin.
- the photocurable resin for example, as a radical polymerization resin, acrylic oligomers such as polyester acrylate, urethane acrylate, epoxy acrylate, unsaturated polyester, enthiol, or these compounds are used. Can be mentioned.
- cationic polymerization resins include epoxy resins such as glycidyl ether resins, cycloaliphatic epoxy resins, oxetane resins, burether resins, and compounds using these compounds. be able to.
- the thermoplastic resin include polyethylene, polypropylene, polystyrene, acrylonitrile Z methacrylic resin, and vinyl chloride.
- a convective additive decomposed sodium hydrogen carbonate, ammonium metaborate, aluminum hydroxide, dosonite, barium metaborate, boiling Medium or high boiling point solvents such as butyl carbitol, flux, isobutyl alcohol, xylene, isopentyl alcohol, butyl acetate, tetrachloroethylene, methyl isobutyl ketone, ethyl carbitol, butyl carbitol, ethylene glycol Can be used.
- connection structure (mounting body 10) described with reference to FIGS. L (a) to (d) and FIG. 2 in the first embodiment was created.
- first plate-like body 101 and second plate-like body 103 are all provided as first plate-like body 101 as an all-layer inter-layer of four-layer wiring.
- connection terminal 102 Using a resin multilayer substrate “ALIVH” substrate (manufactured by Panasonic Electric Elect Port Device Co., Ltd.) with a Charvia Hall (IVH) structure, a part of the surface wiring pattern (not shown) made of copper foil
- the wiring layer (thickness m, diameter m, pitch 100 m, 352 terminals) that becomes the connection terminal 102 is the second plate-like body 103 as a semiconductor chip (silicon memory semiconductor, thickness 0.3 mm, size 10 mm x 10 mm,
- the electrode terminal 104 having the same size is disposed opposite to the connection terminal 102 of the first plate 101.
- the connection terminals 102 and the wiring patterns of the substrate 101 were provided with metal plating such as nickel or gold.
- conductive material 105 Cu powder (average particle size 5 ⁇ m [laser diffraction type particle size distribution measuring device], 10% by weight [resin composition weight basis]) was used as metal particles.
- Convection additive 112 contains isopropyl alcohol 3% by weight [resin composition weight basis], and resin composition 106 contains 87% by weight of one-part curable epoxy resin [based on resin composition weight basis]. The above materials were mixed using a kneader.
- bubbles 107 are generated between adjacent terminals from the convective additive 112 in the resin composition 106 by heating, and convection is generated in the resin composition 106. Heating was performed at 160 ° C. for 20 seconds, and the conductive material 105 in the resin composition 106 was accumulated so as to cover the side surfaces of the terminals as shown in FIG. 1 (d). Thereafter, the epoxy resin was cured by heating at 150 ° C. for 10 minutes.
- the connection structure (mounting body 11) described with reference to FIG. 3 was created.
- the conductive material 105 in the resin composition contains, as metal particles, solder powder (Sn— 3.OAg-0.5Cu, average particle size 18 / ⁇ ⁇ , 20% by weight [based on the weight of the resin composition]), rosin-modified flux (containing 32% glycol solvent, 5% by weight [based on the weight of the resin composition]) as an oxide film removing agent,
- solder powder Sn— 3.OAg-0.5Cu, average particle size 18 / ⁇ ⁇ , 20% by weight [based on the weight of the resin composition]
- rosin-modified flux containing 32% glycol solvent, 5% by weight [based on the weight of the resin composition]
- the heating temperature and heating time for accumulating the conductive material in the resin composition on the side of each terminal are set to 230 ° C so that the melting point of the used solder powder is 217 ° C or higher. Heating was performed at C for 30 seconds.
- the same conditions as in Example 1 of the mounting body 10 of the first embodiment were adopted.
- connection structure mounting body 12 described with reference to FIGS. 4 (a) to 4 (e) and FIG. 5 (a) was created.
- the first plate-like body 101, the second plate-like body 103 and the conductive material 105, the resin composition 106, and the convection additive 112 used were the same as those in Example 1 of the mounting body 10 of the first embodiment. The same one used was used.
- a dispenser having a stirring function is used to prevent the separation of the resin composition 106, and the supply is controlled so that a constant supply amount is obtained. The method used was used. At this time, it may be supplied so as to scan the mounting area in order to apply uniformly to the whole, or it may be dispensed into a proper character (such as a asterisk) shape at a predetermined position.
- the distance between the opposing terminals (102, 104) is fixed to be zero, and the electrical conductivity interposed between the opposing terminals is fixed.
- the active substance 111 is embedded in the surface between the opposing terminals.
- the heating temperature and the heating time for accumulating the conductive material 105 that generates bubbles in the convection additive and causes convection in the resin composition so as to cover the side surface of each terminal are also shown in Example 1 of Embodiment 1. The same conditions as in Example 1 of Embodiment 1 were adopted for the heating temperature and heating time for curing the epoxy resin.
- First plate-like body 101, second plate-like body 103 and conductive material 105, rosin composition 106, convection additive 112 used in the manufacture of mounting body 13 [see Fig. 5 (b)] was the same as that used in Example 2 of the mounting body 11.
- the method for applying the material and the arrangement method of the plate state 103 were the same as those in Example 3 of the mounting body 12, and the heating temperature and heating time were the same as those in Example 2 of the mounting body 11.
- connection structure mounting body 14 described with reference to Fig. 6 (a) was created.
- the average particle diameter of the conductive material using the distance between the opposing terminals should be the same value.
- the conductive material 111 intervening between the opposing terminals is sandwiched so as not to be buried in the surface between the opposing terminals.
- the conditions similar to those in Example 3 of the mounting body 12 were adopted under conditions other than the fixing method of the plate-like body, such as the plate-like body, the material, the material application method, and the heating time.
- the mounting body 14 shown in FIG. 6 (a) was manufactured and the electrical connection between the opposing connection terminals was inspected, and as a result, the initial connection was confirmed.
- the pressure applied to the plate-like body can be reduced as much as possible by arranging and fixing the plate-like body so that the conductive substance 111 interposed between the opposed terminals is not buried in the surface between the opposed terminals. It becomes possible to avoid problems such as the destruction of the plate-like body.
- the present invention is applicable to flip chip mounting of next-generation semiconductor chips whose pitch is becoming narrower, and is useful for electronic component mounting bodies excellent in productivity and reliability and a method for manufacturing the same.
- a structure and a manufacturing method thereof can be provided.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008513152A JP4294722B2 (ja) | 2006-04-27 | 2007-04-18 | 接続構造体及びその製造方法 |
CN2007800151531A CN101432861B (zh) | 2006-04-27 | 2007-04-18 | 连接构造体及其制造方法 |
US12/298,464 US8097958B2 (en) | 2006-04-27 | 2007-04-18 | Flip chip connection structure having powder-like conductive substance and method of producing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006123846 | 2006-04-27 | ||
JP2006-123846 | 2006-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007125789A1 true WO2007125789A1 (ja) | 2007-11-08 |
Family
ID=38655318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/058418 WO2007125789A1 (ja) | 2006-04-27 | 2007-04-18 | 接続構造体及びその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8097958B2 (ja) |
JP (1) | JP4294722B2 (ja) |
CN (1) | CN101432861B (ja) |
WO (1) | WO2007125789A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
JP4294722B2 (ja) | 2009-07-15 |
JPWO2007125789A1 (ja) | 2009-09-10 |
US20090102064A1 (en) | 2009-04-23 |
US8097958B2 (en) | 2012-01-17 |
CN101432861A (zh) | 2009-05-13 |
CN101432861B (zh) | 2011-02-09 |
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