摘要:
A structure with electronic component mounted therein includes a wiring board on which an electronic component is mounted at least on its first face, resin provided at least between the electronic component and the wiring board, and a plurality of holes formed in the wiring board at region corresponding to a mounting position of the electronic component. The holes are filled with the resin. This suppresses warpage of the structure with electronic component mounted therein, and also improves reliability by reducing a stress applied to a bonding section between the wiring board and the electronic component.
摘要:
Including a wiring board having an electronic component mounted at least on a first surface, a resin applied at least between the electronic component and the wiring board, and a through-hole provided in a region corresponding to the mounting position of the electronic component in the wiring board, a protrusion is formed on the wiring board so as to overlap at least with the electronic component, around a region corresponding to the mounting position of the electronic component.
摘要:
A plurality of semiconductor elements is adjacently mounted on a substrate by a solder with a melting point of 200° C. or lower, an electronic part other than the semiconductor elements is mounted on the substrate between the adjacently mounted semiconductor elements by a solder with a melting point of 200° C. or lower, and spaces between the plurality of semiconductor elements and the substrate, spaces between the electronic part and the substrate, and spaces between the plurality of semiconductor elements and the electronic part are integrally molded with a molding resin.
摘要:
In order to easily inject underfill resin and perform molding with reliability, groove sections are formed on a surface of a circuit board such that the ends of the groove sections extend to semiconductor elements. Low-viscosity underfill resin applied dropwise is guided by the groove sections and flows between the circuit board and the semiconductor elements. The underfill resin hardly expands to regions outside the semiconductor elements.
摘要:
A structure with electronic component mounted therein includes a wiring board on which an electronic component is mounted at least on its first face, resin provided at least between the electronic component and the wiring board, and a plurality of holes formed in the wiring board at region corresponding to a mounting position of the electronic component. The holes are filled with the resin. This suppresses warpage of the structure with electronic component mounted therein, and also improves reliability by reducing a stress applied to a bonding section between the wiring board and the electronic component.
摘要:
A plurality of semiconductor elements is adjacently mounted on a substrate by a solder with a melting point of 200° C. or lower, an electronic part other than the semiconductor elements is mounted on the substrate between the adjacently mounted semiconductor elements by a solder with a melting point of 200° C. or lower, and spaces between the plurality of semiconductor elements and the substrate, spaces between the electronic part and the substrate, and spaces between the plurality of semiconductor elements and the electronic part are integrally molded with a molding resin.
摘要:
A mounting structure is provided that can suppress flux from spreading, secure a connecting strength between a circuit board and an electronic component with underfill, and achieve a stable electrical connection between lands and terminals. The mounting structure is configured with a flat electronic component and a circuit board, and a plurality of lands provided on the undersurface of the electronic component and a plurality of terminals provided on the mounting surface of the circuit board so as to correspond to the plurality of lands are bonded with solder. The circuit board includes a means for holding flux separated from the solder in the proximity of at least one of the plurality of terminals.
摘要:
In order to easily inject underfill resin and perform molding with reliability, groove sections are formed on a surface of a circuit board such that the ends of the groove sections extend to semiconductor elements. Low-viscosity underfill resin applied dropwise is guided by the groove sections and flows between the circuit board and the semiconductor elements. The underfill resin hardly expands to regions outside the semiconductor elements.
摘要:
A resin composition is provided that makes it possible to prevent low-heat resistant components from being damaged when heated in a process of mounting electronic components on a circuit board. There are also provided a method for easily repairing circuit boards that are determined to be off-specification products in the mounting process, and a method for separating and recovering useful circuit boards and/or electronic components from the circuit boards that are determined to be off-specification products in the mounting process. The resin composition comprises (A) 100 parts by weight of an epoxy resin, (B) 30 to 200 parts by weight of a thiol-based curing agent, (C) 5 to 200 parts by weight of an organic-inorganic composite insulating filler and (D) 0.5 to 20 parts by weight of an imidazole-based curing accelerator. According to the recovering method, the resin composition is softened by heating a part or whole of the circuit board in the mounting process, to a temperature in range not lower than the glass transition point of the resin composition and not higher than 110° C., and separating and recovering the electronic components from the circuit board.
摘要:
A semiconductor device mounted structure includes a semiconductor device having a plurality of first electrodes, a circuit board having a plurality of second electrodes, a plurality of bumps respectively formed on the plurality of first electrodes, a plurality of bonding members respectively positioned between the bumps and the second electrodes to electrically connect the first electrodes to the second electrodes via the bumps, and a plurality of reinforcing resin members respectively positioned around the bonding members so as to cover at least the bonding members and bonding regions between the bonding members and the bumps. Adjacent reinforcing resin members are spaced away from each other so as not to have contact with each other without being in contact with the semiconductor device. This semiconductor device mounted structure enhances the reliability of joints in impact resistance and makes it easy to repair it.