摘要:
To provide a flip-chip mounting method and a bump formation method applicable to flip-chip mounting of a next generation LSI and having high productivity and high reliability.A semiconductor chip 20 having a plurality of electrode terminals 12 is held to oppose a circuit board 21 having a plurality of connection terminals 11 with a given gap provided therebetween, and the semiconductor chip 20 and the circuit board 21 in this state are dipped in a dipping bath 40 containing a melted resin 14 including melted solder particles for a given period of time. In this dipping process, the melted solder particles self-assemble between the connection terminals 11 of the circuit board 21 and the electrode terminals 12 of the semiconductor chip 20, so as to form connectors 22 between these terminals. Thereafter, the semiconductor chip 20 and the circuit board 21 are taken out of the dipping bath 40, and the melted resin 14 having permeated into the gap between the semiconductor chip 20 and the circuit board 21 is cured, so as to complete a flip-chip mounting body.
摘要:
A layered film of a three-layer clad foil formed with a first metal layer 23, a second metal layer 25, and an inorganic insulating layer 35 interposed therebetween is prepared. After the second metal layer 25 is partially etched to form a gate electrode 20g, the first metal layer 23 is partially etched to form source/drain electrodes 20s, 20d in a region corresponding to the gate electrode 20g. A semiconductor layer 40 is then formed in contact with the source/drain electrodes 20s, 20d and on the gate electrode 20g with the inorganic insulating layer 35 interposed therebetween. The inorganic insulating layer 35 on the gate electrode 20g functions as a gate insulating film 30, and the semiconductor layer 40 between the source/drain electrodes 20s, 20d on the inorganic insulating layer 35 functions as a channel.
摘要:
A transfer material capable of transferring a fine wiring pattern to a substrate reliably and easily. The transfer material includes at least three layers of a first metal layer as a carrier, a second metal layer that is transferred to the substrate as a wiring pattern, and a peel layer adhering the first and second metal layers releasably. On the surface portion of the first metal layer, a concave and convex portion corresponding to the wiring pattern is formed, and the peel layer and the second metal layer are formed on a region of the convex portions.
摘要:
A flip chip mounting method which is applicable to the flip chip mounting of a next-generation LSI and high in productivity and reliability as well as a method for connecting substrates are provided. A circuit board 10 having a plurality of connecting terminals 11 and a semiconductor chip 20 having a plurality of electrode terminals 21 are disposed in mutually facing relation and a resin 13 containing conductive particles 12 and a gas bubble generating agent is supplied into the space therebetween. In this state, the resin 13 is heated to generate gas bubbles 30 from the gas bubble generating agent contained in the resin 13. The resin 13 is pushed toward the outside of the generated gas bubbles 30 by the growth thereof. The resin 13 pushed to the outside is self-assembled in the form of columns between the respective terminals of the circuit board 10 and the semiconductor chip 20. In this state, by pressing the semiconductor chip 20 against the circuit board 10, the conductive particles 12 contained in the resin 13 self-assembled between the facing terminals are brought into contact with each other to provide electrical connection between the terminals.
摘要:
A flip chip mounting process includes the steps of supplying a resin (13) containing solder powder and a convection additive (12) onto a wiring substrate (10) having a plurality of electrode terminals (11), then bringing a semiconductor chip (20) having a plurality of connecting terminals (11) into contact with a surface of the supplied resin (13), and then heating the wiring substrate (10) to a temperature that enables the solder powder to melt. The heating step is carried out at a temperature that is higher than the boiling point of the convection additive (12) to allow the boiling convection additive (12) to move within the resin (12). During this heating step, the melted solder powder is allowed to self-assemble into the region between each electrode terminal (11) of the wiring substrate (10) and each connecting terminal (21) of the semiconductor chip to form an electrical connection between each electrode terminal (11) and each connecting terminal (21). Finally, the resin is cured so as to secure the semiconductor chip (20) to the wiring substrate (10).
摘要:
A flip chip mounting process includes the steps of supplying a resin (13) containing solder powder and a convection additive (12) onto a wiring substrate (10) having a plurality of electrode terminals (11), then bringing a semiconductor chip (20) having a plurality of connecting terminals (11) into contact with a surface of the supplied resin (13), and then heating the wiring substrate (10) to a temperature that enables the solder powder to melt. The heating step is carried out at a temperature that is higher than the boiling point of the convection additive (12) to allow the boiling convection additive (12) to move within the resin (12). During this heating step, the melted solder powder is allowed to self-assemble into the region between each electrode terminal (11) of the wiring substrate (10) and each connecting terminal (21) of the semiconductor chip to form an electrical connection between each electrode terminal (11) and each connecting terminal (21). Finally, the resin is cured so as to secure the semiconductor chip (20) to the wiring substrate (10).
摘要:
A flip chip mounting process or a bump-forming process according to the present invention is characterized in that electrically-conductive particles are fixed on electrodes formed on an electronic component. A composition comprising solder powder, a convection additive and a resin component is supplied onto a surface of the electronic component, the surface is provided with the electrodes. The supplied composition is heated up to a temperature enabling the solder powder to melt. As a result, the convection additive boils or is decomposed so as to generate a gas. The generated gas produces a convection phenomenon within the supplied composition. Since the convection phenomenon promotes the movement of the solder powder, the solder powder can move freely within the composition. The electrically-conductive particles serve as nuclei for the solder powder to self-assemble and grow. As a result, the molten solder powder is allowed to self-assemble and grow in the vicinity of the electrically-conductive particles, which leads to a formation of connections or bumps.
摘要:
The present invention provides a conductive resin composition for connecting electrodes electrically, in which metal particles are dispersed in a flowing medium, wherein the flowing medium includes a first flowing medium that has relatively high wettability with the metal particles and a second flowing medium that has relatively low wettability with the metal particles, and the first flowing medium and the second flowing medium are dispersed in a state of being incompatible with each other. Thereby, a flip chip packaging method that can be applied to flip chip packaging of LSI and has high productivity and high reliability is provided.
摘要:
A mounted body (100) of the present invention includes: a semiconductor element (10) having a surface (10a) on which element electrodes (12) are formed and a rear surface (10b) opposing the surface (10a); and a mounting board (30) on which wiring patterns (35) each having an electrode terminal (32) are formed. The rear surface (10b) of the semiconductor element (10) is in contact with the mounting board (30), and the element electrodes (12) of the semiconductor element (10) are connected electrically to the electrode terminals (32) of the wiring pattern (35) formed on the mounting board (30) via solder connectors (20) formed of solder particles assembled into a bridge shape. With this configuration, fine pitch connection between the element electrodes of the semiconductor element and the electrode terminals of the mounting board becomes possible.
摘要:
A module that can not only achieve the reduction in size and manufacturing cost but also be impervious to noise due to electromagnetic waves, and a mounted structure using the same are provided. A module (1) includes a substrate (12) and a plurality of semiconductor packages (11a, 11b), each including a semiconductor chip (10), mounted on the substrate (12). Each of the plurality of semiconductor packages (11a, 11b) includes a first radio communication element (16) for transmitting and receiving a signal between the semiconductor chips (10) in the plurality of semiconductor packages (11a, 11b) by radio communication, and the first radio communication element (16) is constituted independently of the semiconductor chip (10).