Abstract:
In an electronic device having an interposer substrate as an MCM structure, heat dissipation properties are enhanced while the reliability of joint between the interposer substrate and a motherboard is maintained. In the invention, a metal core base material of great heat capacity and high thermal conductivity is used for both the interposer substrate and the motherboard. Furthermore, a part where a core metal is exposed is provided on at least one of the interposer substrate and the motherboard. A solder joint pad is directly formed on the core metal exposed part, and the interposer substrate is solder-joined to the motherboard.
Abstract:
L'invention se rapporte à un composant électronique (300). Un tel composant électronique comprend. - une enveloppe (310) formant boitier; - une plaque de circuit imprimé (320) ; - une pluralité de billes intégrées au sein d'une matrice de bille (BGA) ; il se distingue par le fait ladite plaque de circuit imprimé (320) comprend au moins un circuit définissant au moins un anneau de garde (Ag, A1, A2).
Abstract:
An electric circuit apparatus includes: a first-circuit board that includes a first-through-hole, and a first-electrode disposed on a front side of the first-circuit-board; a second-circuit-board that is disposed on a back side of the first-circuit-board, the second-circuit-board including on the front side of the second-circuit-board a second-electrode associated with the first-through-hole; a semiconductor device that is disposed on the front side of the first-circuit-board, the semiconductor device including on a back side a third-electrode-associated with the first-electrode, and a fourth-electrode-associated with the second-electrode; a first-bonding-material that bonds the first-electrode and the-third-electrode; a second-bonding-material that bonds the second-electrode and the fourth-electrode while passing through the first-through-hole; and a support body that is disposed between the first-electrode and the second-circuit-board and that supports the first-circuit-board.
Abstract:
The invention concerns an electronic component package comprising a support and heat conductor 3 the heat conductor has a protuberance and the support has a socket arranged to be able to receive the protuberance so that the movement of heat conductor relative to the support during the assembly process is reduced.
Abstract:
The invention relates to a package board having a core board (30) on each surface of which a plurality of conductor circuits are formed with an interlaminar resin insulating layer therebetween, wherein a plurality of soldering pads (75U,75D) are formed on the IC chip mounted side surface, as well as on the other side surface to be connected to another board, so that said soldering pads (75D) on the other side surface are larger than those on said IC chip side surface of said package board, and a dummy pattern (58M) is formed between conductor circuit patterns formed on said IC chip mounted side surface of said core board.