Abstract: An electronic element unit (1) includes an electronic element (2) having a plurality of connecting terminals (12) on a lower surface thereof, a circuit board (3) having a plurality of electrodes (22) corresponding to the connecting terminals (12) on an upper surface thereof. The connecting terminals (12) and the electrodes (22) are connected by solder bumps (23), and the electronic element (2) and the circuit board (3) are partly bond by a resin bond part (24) made of a thermosetting material of a thermosetting resin, and a metal powder (25) is included in the resin bond parts (24) in a dispersed state. The metal powder (25) has a melting point lower than a temperature at which the resin bond parts (24) are heated when a work (a repairing work) is carried out for removing the electronic element (2) from the circuit board (3).

Abstract: A core layer has on its front surface a pair of connecting electrodes forming a wiring pattern and a resist formed between the pair of electrodes; an electronic component having a pair of connecting terminals; a solder part joining between electrodes and connecting terminals; and a sealing resin part filling a gap between the bottom surface of the electronic component and the front surface of the core layer and covering the resist and the solder part, to prevent a defect of a component built-in printed circuit substrate.

Abstract: Disclosed are an electronic component mounting system and an electronic component mounting method capable of reducing the space occupied by equipment and equipment cost and ensuring high connection reliability. An electronic component mounting system (1) includes a solder printing device (M1), a coating/inspection device (M2), a component mounting device (M3), a bonding material supply/substrate mounting device (M4), and a reflow device (M5). The electronic component mounting system (1) mounts an electronic component on a main substrate (4) and connects a module substrate (5) to the main substrate (4). A cream solder is printed on the main substrate (4) to mount an electronic component, a bonding material in which solder particles are contained in thermosetting resin is supplied to a first connection portion of the main substrate (4), and a second connection portion of the module substrate (5) is landed on the first connection portion through the bonding material.

Abstract: A method of bonding electrodes and core wires capable of shortening the operation time and improving the bonding strength and an electronic unit formed by bonding the electrodes and the core wires are intended to be provided.

Abstract: When metal junction between a first electrode and a second electrode is executed as ultrasonic bonding between metals including at least copper, the ultrasonic bonding is performed in a state that a contact interface between the first electrode and the second electrode is covered with a bonding auxiliary agent. As a result, formation of oxide at a bonding interface between the first electrode and the second electrode due to execution of the ultrasonic bonding can be suppressed. Therefore, while a desired bonding strength is ensured, ultrasonic bonding with copper used for the first electrode or the second electrode can be fulfilled and cost cuts in mounting of semiconductor devices can be achieved.

Abstract: A method of mounting an electronic component allows bumps to land onto electrodes via thermosetting flux formed of first thermosetting resin containing a first active ingredient, and brings a resin reinforcing member formed of second thermosetting resin containing a second active ingredient into contact with the electronic component at reinforcement sections, and then heats the substrate to form solder junction sections that bond the bumps to the electrodes. At the same time, the method forms resin reinforcement sections that reinforce the solder junction sections from the surroundings. A mixing ratio of the second active ingredient in the resin reinforcing member is set greater than a mixing ratio of the first active ingredient in the thermosetting flux.

Abstract: A substrate backing device 3 places and holds a rigid substrate 6 thereon and receives, from therebelow, a pressing force during operations for thermocompressively bonding a flexible substrate 8 thereto. The substrate backing device 3 includes a plate-shaped backing plate 4 provided with a backing support surface 4a adapted to come into contact with the lower surface of the rigid substrate 6 for supporting it. The backing support surface 4a is provided with an opening portion 4d having a planar opening shape encompassing the area of the rigid substrate 6 to be compressively bonded to the flexible substrate 8.

Abstract: To provide a components joining method and a components joining structure which can realize joining of components while securing conduction at a low electrical resistance with high reliability. In a construction in which by using a solder paste containing solder particles 5 in a thermosetting resin 3a, a rigid substrate 1 and a flexible substrate 7 are bonded by the thermosetting resin 3a, and a first terminal 2 and a second terminal 8 are electrically connected by the solder particles 5, a blending ratio of an activator of the thermosetting resin 3a in the solder paste is properly set and oxide film removed portions 2b, 8b, and 5b are partially formed in oxide films 2a, 8a, and 5a of the first terminal 2, the second terminal 8, and the solder particles 5.

Abstract: It is an object of the present invention to provide an electronic element unit and a reinforcing adhesive agent in which a bonding strength can be improved between an electronic element and a circuit board and a repairing work can be carried out without giving a thermal damage to the electronic element or the circuit board. In an electronic element unit (1) including an electronic element (2) having a plurality of connecting terminals (12) on a lower surface thereof, a circuit board (3) having a plurality of electrodes (22) corresponding to the connecting terminals (12) on an upper surface thereof. The connecting terminals (12) and the electrodes (22) are connected by solder bumps (23), and the electronic element (2) and the circuit board (3) are partly bond by a resin bond part (24) made of a thermosetting material of a thermosetting resin, and a metal powder (25) is included in the resin bond parts (24) in a dispersed state.

Abstract: In an electronic component soldering method of connecting a terminal provided on a flexible substrate to an electrode of a rigid substrate, after solder-mixed resin in which solder particles are mixed in thermosetting resin has been applied onto the rigid substrate so as to cover the electrode, the flexible substrate is put on the rigid substrate and heat-pressed, whereby there are formed a resin part that bonds the both substrates by thermosetting of the thermosetting resin, and a solder part which is surrounded by the resin part and has narrowed parts in which the peripheral surface is narrowed inward in the vicinity of the terminal surface and in the vicinity of the electrode surface. Hereby, the solder parts are soldered to the electrodes and the terminal at acute contact angles so that the production of shape-discontinuities which lowers fatigue strength can be eliminated.

Abstract: Disclosed are an electronic component mounting system and an electronic component mounting method capable of reducing the space occupied by equipment and equipment cost and ensuring high connection reliability. An electronic component mounting system (1) includes a solder printing device (M1), a coating/inspection device (M2), a component mounting device (M3), a bonding material supply/substrate mounting device (M4), and a reflow device (M5). The electronic component mounting system (1) mounts an electronic component on a main substrate (4) and connects a module substrate (5) to the main substrate (4). A cream solder is printed on the main substrate (4) to mount an electronic component, a bonding material in which solder particles are contained in thermosetting resin is supplied to a first connection portion of the main substrate (4), and a second connection portion of the module substrate (5) is landed on the first connection portion through the bonding material.

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.

Abstract: An object of the invention is to provide a resin application apparatus capable of efficiently doing resin application work for resin reinforcement for which a corner part of an electronic component is targeted, and a data creation apparatus for resin application.

Abstract: In the soldering method, metal-powder-contained flux is disposed between bumps and circuit electrodes when electronic parts are mounted by soldering, the metal powder comprising 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: To provide a components joining method and a components joining structure which can realize joining of components while securing conduction at a low electrical resistance with high reliability. In a construction in which by using a solder paste containing solder particles 5 in a thermosetting resin 3a, a rigid substrate 1 and a flexible substrate 7 are bonded by the thermosetting resin 3a, and a first terminal 2 and a second terminal 8 are electrically connected by the solder particles 5, a blending ratio of an activator of the thermosetting resin 3a in the solder paste is properly set and oxide film removed portions 2b, 8b, and 5b are partially formed in oxide films 2a, 8a, and 5a of the first terminal 2, the second terminal 8, and the solder particles 5.

Abstract: The invention intends to provide an electronic component mounting adhesive that can inhibit cracks and peelings in an electronic component mounting structure obtained by joining electronic components each other from occurring and an electronic component mounting structure obtained by joining electronic components with such an electronic component mounting adhesive. In an electronic component mounting structure, a first circuit board and a second circuit board are bonded with an electronic component mounting adhesive. Here, the electronic component mounting adhesive is obtained by dispersing metal particles having the melting temperature Mp lower than the glass transition temperature Tg of a cured material of a thermosetting resin in the thermosetting resin.

Abstract: By an electronic component mounting method for electrically connecting bumps to board electrodes, in a contact process for placing a thermosetting resin in a liquid glob state on the board surface and bringing the lower surface of the electronic component into contact with the thermosetting resin, the bumps are pressurized against the electrodes in positional alignment in a liquid glob distribution state where one portion of the liquid glob is arranged inside an electronic component mounting region and a remaining portion greater in liquid measure than the one portion is arranged outside the electronic component mounting region. The thermosetting resin enters into a gap between the electronic component and the board by capillarity in a thermocompression bonding process. This prevents voids occurring in the sealing resin, reinforces bonded portions of bumps and electrodes with thermally cured thermosetting resin, thereby preventing bonded portion breakage due to thermal stress generated during cooling.

Abstract: To provide a components joining method and a components joining structure which can realize joining of components while securing conduction at a low electrical resistance with high reliability. In a construction in which by using a solder paste containing solder particles 5 in a thermosetting resin 3a, a rigid substrate 1 and a flexible substrate 7 are bonded by the thermosetting resin 3a, and a first terminal 2 and a second terminal 8 are electrically connected by the solder particles 5, a blending ratio of an activator of the thermosetting resin 3a in the solder paste is properly set and oxide film removed portions 2b, 8b, and 5b are partially formed in oxide films 2a, 8a, and 5a of the first terminal 2, the second terminal 8, and the solder particles 5.

Abstract: In order to mount an electronic component, a connection terminal of the electronic component is bonded to electrodes of a substrate. This is done by using solder paste which mixes solder particles in a thermosetting adhesive. The solder paste is supplied to the electrodes and a recess. Solder print parts are formed. The electronic component is mounted and the connection terminal and the main body of the electronic component are adhered to the solder print parts, and are heated in this state by reflow. As a result, the connection terminal and the electrodes are bonded by a solder junction.

Abstract: A method for connecting a first terminal array 6 provided in a connection portion 5 of a first electric component and a second terminal array 8 provided in a connection portion 7 of a second electric component to each other in such a manner that electric continuity is established between them has two steps, that is, a step of tentatively fixing the two connection portions 5 and 7 with each other whose terminal arrays 6 and 8 are positioned with respect to each other by soldering them with solder particles 3 using a paste-like anisotropic conductive adhesive 1 in which the solder particles 3 and conductive particles 4 are dispersed in a thermosetting resin 2, and a step of finally fixing the two connection portions 5 and 7 with each other with the thermosetting resin 2 that has been set thermally. This prevents positional deviation from occurring between the two terminal arrays 6 and 8 during a transport from a tentative fixing apparatus to a final fixing apparatus.