摘要:
The invention relates to an electronic sub-assembly (36) having at least one electronic component (14) embedded in a sequence of layers, the electronic component(14) being arranged in a recess of an electrically conducting central layer (16) and directly adjoining a resin layer (12, 20) on each side.
摘要:
An electronic device includes: a first electronic component 10; first members 13 that are provided on a first surface of the first electronic component and that include outside surfaces 13a configured to face diagonally upward with respect to the first surface; a second electronic component 20 provided above the first surface; second members 23 that are provided corresponding to the first members on a second surface of the second electronic component which faces the first surface and that include inside surfaces 23a configured to face diagonally downward with respect to the second surface and configured to face the outside surfaces; and solder 30 that is provided between the first surface and the second surface and that electrically connects the first electronic component and the second electronic component.
摘要:
The circuit connecting material of the invention is a circuit connecting material for connection between a first circuit member having a first circuit electrode formed on the main side of a first board, and a second circuit member having a second circuit electrode formed on the main side of a second board, with the first circuit electrode and second circuit electrode laid facing each other, the circuit connecting material comprising a curing agent that generates free radicals, a radical polymerizing substance and a compound containing secondary thiol group. The circuit connecting material of the invention is capable of low-temperature rapid curing and has excellent storage stability.
摘要:
The method for producing a semiconductor chip with an adhesive film of the present invention comprises steps of: preparing a laminate in which at least a divided semiconductor wafer comprising a plurality of semiconductor chips, obtained by forming a cut which separates the semiconductor wafer into a plurality of semiconductor chips on one side of the semiconductor wafer in a thickness less than that of the semiconductor wafer and by grinding the other side of the semiconductor wafer on which no cut is formed to reach the cut, an adhesive film for a semiconductor and a dicing tape are laminated, the adhesive film for a semiconductor having a thickness in the range of 1 to 15 µm and a tensile elongation at break of less than 5%, and the tensile elongation at break being less than 110% of the elongation at a maximum load; and dividing the adhesive film for a semiconductor by picking up the plurality of semiconductor chips in a laminating direction of the laminate, thereby preparing a semiconductor chip with an adhesive film.
摘要:
There is provided a flip-chip mounting resin composition which can be used for a flip-chip mounting process that is high in productivity and reliability and thus can be applicable to a flip-chip mounting of a next-generation LSI. This flip-chip mounting resin composition comprises a resin, metal particles and a convection additive 12 that boils upon heating the resin 13. Upon the heating of the resin 13, the metal particles melt and the boiling convection additive 12 convects within the resin 13. This flip-chip mounting resin composition is supplied between a circuit substrate 10 and a semiconductor chip 20, and subsequently the resin 13 is heated so that the molten metal particles self-assemble into the region between each electrode of the circuit substrate and each electrode of the semiconductor chip. As a result, an electrical connection is formed between each electrode of the circuit substrate and each electrode of the semiconductor chip. Finally, the resin 13 is allowed to cure so that the semiconductor chip 20 is secured to the circuit substrate 10, which leads to in a formation of a flip chip assembly.
摘要:
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.
摘要:
The invention provides a pick and place assembly for transferring a film of material. The assembly comprises a collet having a substantially convex contact surface for contacting the film, the collet including a vacuum suction device operative to generate a force to hold the film. The film may comprise a thermoplastic adhesive tape or B-stage thermoset epoxy coated film.
摘要:
A semiconductor bear chip (9) having a bump (10) subjected to high temperatures is pressed, from the upper side, onto a wiring board (8) including a wiring pattern, a thermosetting resin film (4) covering an electrode area on the wiring pattern and having insulating particles dispersed and included and a thermoplastic resin film (7) covering the thermosetting resin film (4), while applying a ultrasonic wave, thereby inserting the bumps (10) of the semiconductor bear chip (9) through the thermoplastic resin film and the thermosetting resin film to bond the top end portion of the bump (10) with the electrode area.