US 2019/0198460 A1Published application

Circuit system having compact decoupling structure

AssigneeAP Memory Technology Corp.

InventorsMasaru HARAGUCHI, Yoshitaka FUJIISHI

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Abstract

A circuit system having compact decoupling structure, including: a mother board; at least one circuit unit, each having a substrate, a logic-circuit die, a plurality of first metal contacts, and a plurality of second metal contacts, the substrate having a first surface and a second surface, the first metal contacts being formed on the first surface and soldered onto the mother board, the second metal contacts being formed on the logic-circuit die and soldered onto the second surface to form flip-chip pillars, and the flip-chip pillars determining a height of a gap between the die and the substrate; and at least one decoupling unit for providing an AC signals decoupling function for the at least one circuit unit; wherein each of the at least one decoupling unit is placed in the gap of one said circuit unit and includes a mother die and at least one stack-type integrated-passive-device die.

Claims15

Dependent claims

A circuit system having compact decoupling structure, including:

a mother board;
at least one circuit unit, each having a substrate, a logic-circuit die, a plurality of first metal contacts, and a plurality of second metal contacts, wherein the substrate has a first surface and a second surface opposing the first surface, the first metal contacts are formed on the first surface and soldered onto the mother board, the second metal contacts are formed on the logic-circuit die and soldered onto the second surface of the substrate to form flip-chip pillars, and the flip-chip pillars determine a height of a gap between the logic-circuit die and the substrate;
and
at least one decoupling unit for providing an AC signals decoupling function for the at least one circuit unit;
wherein, each of the at least one decoupling unit is placed in the gap of one said circuit unit and includes a mother die, at least one stack-type integrated-passive-device die, and a plurality of third metal contacts, the third metal contacts being formed on the mother die and soldered onto the logic-circuit die, and the at least one stack-type integrated-passive-device die each having a plurality of fourth metal contacts formed thereon and soldered onto the mother die.

2 more elements

Dependencies are inferred from the claim text.