Abstract:
An electronic component assembly including a first electronic component including a plurality of first electrodes provided on a first major surface of the first electronic component; and a second electronic component including a plurality of second electrodes provided on a first major surface of the second electronic component. A resin including solder powder is provided between the first electronic component and the second electronic component. Also, solder connections are provided to electrically interconnect the first and second electrodes. Elongated grooves are provided in surfaces of the electronic components. The grooves are provided for generation of bubbles during the process for producing the electronic component assembly to promote movement of the solder powder.
Abstract:
A semiconductor device having a semiconductor elements formed with higher density is provided. Furthermore an image display device using the semiconductor device is also provided.A semiconductor device comprising a resin film that has a through hole that penetrates from one surface to the other surface thereof, a source electrode disposed along the inner wall of the through hole, a drain electrode disposed along the inner wall of the through hole, a gate electrode disposed on the other surface of the resin film opposing the through hole, an insulating layer disposed on the gate electrode at the bottom of the through hole and an organic semiconductor disposed in the through hole so as to contact the source electrode and the drain electrode, wherein the organic semiconductor makes contact with at least a part of the insulating layer at the bottom of the through hole so that a channel is formed in the organic semiconductor in the vicinity of the insulating layer that is in contact therewith.
Abstract:
The invention involves mounting a solder resin composition (6) including a solder powder (5a) and a resin (4) on the first electronic component (2); arranging such that the connecting terminals (3) of the first electronic component (2) and the electrode terminals (7) of the second electronic component (8) are facing each other; ejecting a gas (9a) from a gas generation source (1) included in the first electronic component (2) by heating the first electronic component (2) and the solder resin composition; and inducing the flow of the solder powder (5a) in the solder resin composition (6) by inducing convection of the gas (9a) in the solder resin composition (6), and electrically connecting the connecting terminals (3) and the electrode terminals (7) by self-assembly on the connecting terminals (3) and the electrode terminals (7). Through this are provided a flip chip packaging method that enables connecting, with high connection reliability, electrode terminals of a semiconductor chip wired with narrow pitch and connecting terminals of a circuit board, and a bump formation method for packaging on a circuit board.
Abstract:
A pickup device comprising a pickup surface to which an electronic component retaining liquid is to be applied and capable of adjusting a wet area of the electronic component retaining liquid on the pickup surface is prepared, and the electronic component retaining liquid is applied to the pickup surface in a first step. The electronic component is retained on the pickup surface via the electronic component retaining liquid in a state where the wet area is extended in a second step.
Abstract:
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 bump forming method are provided. After a resin 14 containing a solder powder 16 and a gas bubble generating agent is supplied to a space between a circuit board 21 having a plurality of connecting terminals 11 and a semiconductor chip 20 having a plurality of electrode terminals 12, the resin 14 is heated to generate gas bubbles 30 from the gas bubble generating agent contained in the resin 14. The resin 14 is pushed toward the outside of the generated gas bubbles 30 by the growth thereof and self-assembled between the connecting terminals 11 and the electrode terminals 12. By further heating the resin 14 and melting the solder powder 16 contained in the resin 14 self-assembled between the terminals, connectors 22 are formed between the terminals to complete a flip chip mounting body.
Abstract:
The flip chip mounted body of the present invention includes: a circuit board (213) having a plurality of connection terminals (211); a semiconductor chip (206) having a plurality of electrode terminals (207) that are disposed opposing the connection terminals (211); and a porous sheet (205) having a box shape that is provided on an opposite side of a formation surface of the electrode terminal (207) of the semiconductor chip (206), is folded on an outer periphery of the semiconductor chip (206) on the formation surface side of the electrode terminal (207) and is in contact with the circuit board (213), wherein the connection terminal (211) of the circuit board (213) and the electrode terminal (207) of the semiconductor chip (206) are connected electrically via a solder layer (215), and the circuit board (213) and the semiconductor chip (206) are fixed by a resin (217). Thereby, the flip chip mounted body with excellent productivity and reliability that can mount the semiconductor chip on the circuit board, and a method and an apparatus for mounting the flip chip mounted body are provided.
Abstract:
[Problem] To provide a method for forming solder bumps for realizing high density mounting and a highly reliable method for mounting a semiconductor device.[Means for Solving Problem] A flat plate 10 or 30 having a plurality of projections 12 or recesses 32 thereon is prepared; the flat plate is aligned to oppose an electronic component 14 or 34 and a resin composition 18 or 19 including a solder powder 22 or 23 is supplied to a gap between the flat plate and the electronic component; the resin composition is annealed to melt the solder powder included in the resin composition for growing the solder powder up to the level of the surface of the flat plate by allowing the melted solder powder to self-assemble on terminals 16 or 36, so as to form solder bumps 24 or 38 on the terminals; and the flat plate is removed after cooling and solidifying the solder bumps. Thus, the solder bumps 24 or 38 having pits 24a corresponding to the projections 12 or having projections 38a corresponding to the recesses 32 are formed.
Abstract:
There is provided a flip chip mounting process which is high in productivity and reliability, and thus can be applicable to the flip chip mounting of the next-generation LSI. This flip chip mounting process comprises 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. This heating step is carried out at a temperature 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).
Abstract:
There is provided a process for forming bumps wherein a plurality of fine bumps are uniformly formed with high productivity. In this process, a resin (13) comprising solder powder and a convection additive (12) is supplied onto a substrate (10) having a plurality of electrodes (11) thereon. And subsequently the substrate (10) is heated to a temperature that enables the solder powder to melt while keeping a flat plate (14) in contact with a surface of the supplied resin (13). During this heating step, the molten solder powder is allowed to self-assemble onto the electrodes (11) so that a plurality of solder balls resulting from the grown molten solder powder are concurrently formed on the electrodes (11) in self-alignment manner. Finally, by moving the flat plate (14) away from the surface of the supplied resin (13), followed by removing such resin (13), there is provided the substrate (10) wherein the bumps (16) are formed on the plurality of the electrodes.
Abstract:
A conductive adhesive comprises main components of a conductive filler and a binder resin, and a content of the conductive filler is in a range from 20 wt % to 70 wt %. It is preferable that at least a part of the conductive filler has protrusions. A dendrite metal filler is especially preferred. When this adhesive is compressed, the resin component is squeezed out, while the conductive filler component remains inside. As a result, the concentration of the conductive filler component is raised inside, and this is useful in connecting the electrodes by scratching the surfaces of the electrodes. No solder is required in forming a conductive adhesive 3 on a substrate electrode 2 of a circuit substrate 1 and also for packaging an electronic element 4. Provided also are a package of an electronic element using the conductive adhesive with improved initial and long-term reliability, and a method of packaging the same.