Page 119 - System on Package_ Miniaturization of the Entire System
P. 119

Boards


                                  Connectors
                                Pins















                    FIGURE 3.14  Early board (patent fi led in 1967) stacking by PTH interconnections. [6]






                                       Al-cap



                                  Chip
                                       Chip carrier
                                                                         DIP

                                       Interposer
                                                                                     Piggyback
                                                                                       socket
                                  Chip
                                       Chip carrier
                                                                           DIP
                                       Substrate
                                                                                      PCB

                                                                 Standard socket
                          Substrate
                            (a)                                      (b)
                    FIGURE 3.15  (a) Chip carrier stacking [7]. (b) DIP stacking with piggyback socket [8].

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