Abstract: The purpose is, in mounting a semiconductor device onto a substrate, to make it easy to identify the remaining amount of an auxiliary joining agent, to stabilize the dispensing amount of the auxiliary joining agent, and to prevent a shortage of the auxiliary joining agent. Also for the purpose of efficient maintenance of a mounting machine, provided is an auxiliary joining agent adapted to aid joining of metals and prepared by dissolving a colorant in a solvent having a reducing property of removing an oxide film on a metal surface. The auxiliary joining agent is produced by a method including a step of mixing a solvent having a reducing property of removing an oxide film on a metal surface, and a colorant having a property of dissolving in the solvent.

Abstract: A connecting method of a circuit member, includes: a first process of preparing a connection material that a solder material disperses in the adhesive; a second process of disposing the first circuit member and the second circuit member to cause the first electrode of the first circuit member and the second electrode of the second circuit member to oppose each other via the connection material; and a third process of compressing the first circuit member and the second circuit member while applying heat to the connection material. The third process includes a first pressing process which is performed before a temperature of the connection material reaches a melting point of the solder material, and a second pressing process which follows the first pressing process.

Abstract: There is provided a conductive particle including a core particle containing a resin material, and a surface layer that covers a surface of the core particle and contains a solder material, in which a melting point of the solder material is equal to or lower than a softening point of the resin material.

Abstract: A mounting structure includes a bonding material (106) that bonds second electrodes (104) of a circuit board (105) and bumps (103) of a semiconductor package (101), the bonding material (106) being surrounded by a first reinforcing resin (107). Moreover, a portion between the outer periphery of the semiconductor package (101) and the circuit board (105) is covered with a second reinforcing resin (108). Even if the bonding material (106) is a solder material having a lower melting point than a conventional bonding material, high drop resistance is obtained.

Abstract: The purpose is, in mounting a semiconductor device onto a substrate, to make it easy to identify the remaining amount of an auxiliary joining agent, to stabilize the dispensing amount of the auxiliary joining agent, and to prevent a shortage of the auxiliary joining agent. Also for the purpose of efficient maintenance of a mounting machine, provided is an auxiliary joining agent adapted to aid joining of metals and prepared by dissolving a colorant in a solvent having a reducing property of removing an oxide film on a metal surface. The auxiliary joining agent is produced by a method including a step of mixing a solvent having a reducing property of removing an oxide film on a metal surface, and a colorant having a property of dissolving in the solvent.

Abstract: There is provided a connection structure of a circuit member including: a first circuit member having a first main surface provided with a first electrode; a second circuit member having a second main surface provided with a second electrode; and a joining portion which is interposed between the first main surface and the second main surface, in which the joining portion has a solder portion which electrically connects the first electrode and the second electrode to each other, in which the solder portion contains a bismuth-indium alloy, and in which an amount of bismuth contained in the bismuth-indium alloy exceeds 20% by mass and is equal to or less than 80% by mass.

Abstract: A mounting structure includes a bonding material (106) that bonds second electrodes (104) of a circuit board (105) and bumps (103) of a semiconductor package (101), the bonding material (106) being surrounded by a first reinforcing resin (107). Moreover, a portion between the outer periphery of the semiconductor package (101) and the circuit board (105) is covered with a second reinforcing resin (108). Even if the bonding material (106) is a solder material having a lower melting point than a conventional bonding material, high drop resistance is obtained.

Abstract: Disclosed is a system for mounting a flexible first substrate having a first connection region provided with a first electrode group, on a second substrate having a second connection region provided with a second electrode group. The system includes: a stage configured to support the second substrate; a unit for supplying a bonding material including conductive particles and a thermosetting resin, to at least one of the first and second electrode groups; a unit for placing the first substrate on the second substrate via the bonding material and a unit for successively performing a joining process by pressing a first electrode toward a second electrode and curing the thermosetting resin, using a heating tool, while moving the tool to a processing position of another first electrode not yet subjected to the joining process.

Abstract: There is provided a conductive particle including a core particle containing a resin material, and a surface layer that covers a surface of the core particle and contains a solder material, in which a melting point of the solder material is equal to or lower than a softening point of the resin material.

Abstract: There is provided a connection structure of a circuit member including: a first circuit member having a first main surface provided with a first electrode; a second circuit member having a second main surface provided with a second electrode; and a joining portion which is interposed between the first main surface and the second main surface, in which the joining portion has a solder portion which electrically connects the first electrode and the second electrode to each other, in which the solder portion contains a bismuth-indium alloy, and in which an amount of bismuth contained in the bismuth-indium alloy exceeds 20% by mass and is equal to or less than 80% by mass.

Abstract: A connecting method of a circuit member, includes: a first process of preparing a connection material that a solder material disperses in the adhesive; a second process of disposing the first circuit member and the second circuit member to cause the first electrode of the first circuit member and the second electrode of the second circuit member to oppose each other via the connection material; and a third process of compressing the first circuit member and the second circuit member while applying heat to the connection material. The third process includes a first pressing process which is performed before a temperature of the connection material reaches a melting point of the solder material, and a second pressing process which follows the first pressing process.

Abstract: A mounting structure includes a bonding material (106) that bonds second electrodes (104) of a circuit board (105) and bumps (103) of a semiconductor package (101), the bonding material (106) being surrounded by a first reinforcing resin (107). Moreover, a portion between the outer periphery of the semiconductor package (101) and the circuit board (105) is covered with a second reinforcing resin (108). Even if the bonding material (106) is a solder material having a lower melting point than a conventional bonding material, high drop resistance is obtained.

Abstract: Disclosed is an electronic component mounting line on which a substrate undergoes solder paste printing, electronic component placements, and then reflow, while being moved from upstream to downstream.

Abstract: A wiring board on which an electronic component is to be mounted includes a resist having an opening exposing a joint face which is part of the surface of a wiring layer and to which a terminal of the electronic component is to be joined. In the placing step, the electronic component is placed on the wiring board such that the terminal covers the opening entirely and contacts the solder paste applied onto the joint face. Next, the solder paste applied onto the joint face is heated to melt solder and soften thermosetting resin. This allows the solder to gather in a first space within the opening closed with the wiring layer and the electronic component, while allowing the thermosetting resin to gather in a second space formed between a top side of the resist and a lateral side of the electronic component.

Abstract: Disclosed is an electronic component mounting line on which a substrate undergoes solder paste printing, electronic component placements, and then reflow, while being moved from upstream to downstream. The line includes: a substrate feeding machine for feeding the substrate; a screen printing machine for applying solder paste to the substrate; a first electronic component placement machine for placing a first electronic component on the substrate; a resin dispensing machine for dispensing a thermosetting resin onto at least one reinforcement position arranged on the substrate; a second electronic component placement machine for placing a second electronic component on the substrate, such that its peripheral edge portion comes in contact with the thermosetting resin; and a reflow machine for bonding the first and second electronic components to the substrate, by heating and cooling the resultant.

Abstract: A mounting structure includes a bonding material (106) that bonds second electrodes (104) of a circuit board (105) and bumps (103) of a semiconductor package (101), the bonding material (106) being surrounded by a first reinforcing resin (107). Moreover, a portion between the outer periphery of the semiconductor package (101) and the circuit board (105) is covered with a second reinforcing resin (108). Even if the bonding material (106) is a solder material having a lower melting point than a conventional bonding material, high drop resistance is obtained.

Abstract: The purpose is, in mounting a semiconductor device onto a substrate, to make it easy to identify the remaining amount of an auxiliary joining agent, to stabilize the dispensing amount of the auxiliary joining agent, and to prevent a shortage of the auxiliary joining agent. Also for the purpose of efficient maintenance of a mounting machine, provided is an auxiliary joining agent adapted to aid joining of metals and prepared by dissolving a colorant in a solvent having a reducing property of removing an oxide film on a metal surface. The auxiliary joining agent is produced by a method including a step of mixing a solvent having a reducing property of removing an oxide film on a metal surface, and a colorant having a property of dissolving in the solvent.

Abstract: Disclosed is a system for mounting a flexible first substrate having a first connection region provided with a first electrode group, on a second substrate having a second connection region provided with a second electrode group. The system includes: a stage configured to support the second substrate; a unit for supplying a bonding material including conductive particles and a thermosetting resin, to at least one of the first and second electrode groups; a unit for placing the first substrate on the second substrate via the bonding material and a unit for successively performing a joining process by pressing a first electrode toward a second electrode and curing the thermosetting resin, using a heating tool, while moving the tool to a processing position of another first electrode not yet subjected to the joining process.

Abstract: A substrate backing device places and holds a rigid substrate thereon and receives, from therebelow, a pressing force during operations for thermocompressively bonding a flexible substrate thereto. The substrate backing device includes a plate-shaped backing plate provided with a backing support surface adapted to come into contact with the lower surface of the rigid substrate for supporting it. The backing support surface is provided with an opening portion having a planar opening shape encompassing the area of the rigid substrate to be compressively bonded to the flexible substrate. The backing support surface is provided, within the opening portion, a receiving member which, during the thermocompression bonding operations, come into contact with the lower surface of the rigid substrate and with an already-mounted component having been preliminarily mounted on this lower surface in the compression-bonding area and, further, apply an upward supporting counterforce corresponding to the pressing force.

Abstract: Disclosed is an electronic component mounting line on which a substrate undergoes solder paste printing, electronic component placements, and then reflow, while being moved from upstream to downstream. The line includes: a substrate feeding machine for feeding the substrate; a screen printing machine for applying solder paste to the substrate; a first electronic component placement machine for placing a first electronic component on the substrate; a resin dispensing machine for dispensing a thermosetting resin onto at least one reinforcement position arranged on the substrate; a second electronic component placement machine for placing a second electronic component on the substrate, such that its peripheral edge portion comes in contact with the thermosetting resin; and a reflow machine for bonding the first and second electronic components to the substrate, by heating and cooling the resultant.