Semiconductor package using substrate block integration
Pith reviewed 2026-05-06 21:34 UTC · model grok-4.3
The pith
A semiconductor package assembles its substrate from separate central and peripheral blocks glued together with adhesive instead of using one monolithic piece.
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
The central claim is a semiconductor package whose substrate is formed by arranging a central discrete substrate and surrounding peripheral discrete substrates side-by-side, with adhesive filling the gaps to adjoin the blocks into a unified base that carries at least one integrated circuit die on its first surface and a plurality of solder balls on its opposite second surface.
What carries the argument
The adhesive-filled gaps that adjoin the central and peripheral discrete substrate blocks, allowing the partitioned substrate to serve as a mechanically stable platform for die attachment and solder-ball interconnection.
If this is right
- Different substrate materials or layer stacks can be used for the central block versus the peripheral blocks within the same package.
- The manufacturing sequence can produce smaller individual substrate pieces and join them afterward rather than fabricating one large substrate at once.
- The adhesive joints can serve as built-in stress-relief or isolation features between the central die region and the outer I/O regions.
- Standard die-attach and solder-ball processes remain unchanged once the substrate blocks have been adjoined.
Where Pith is reading between the lines
- Yield may improve if smaller substrate blocks can be inspected and sorted before assembly, discarding only defective pieces rather than entire large substrates.
- Signal integrity or power delivery could be tuned by choosing blocks with different trace densities or dielectric properties for specific functions.
- The design opens a route to modular substrate families in which peripheral blocks are swapped to match different package sizes or pin counts while keeping the central block fixed.
Load-bearing premise
The adhesive that fills the gaps between the separate substrate blocks will keep the assembly rigid enough, maintain any needed electrical paths, and handle heat well enough to survive normal operation and standard reliability tests.
What would settle it
A completed package subjected to thermal cycling or mechanical shock that shows delamination along the adhesive gaps, cracking at the block interfaces, or electrical opens or shorts traceable to the joints would demonstrate that the partitioned construction fails to perform equivalently to a monolithic substrate.
Figures
read the original abstract
1 . A semiconductor package, comprising: a partitioned package substrate composed of a plurality of discrete substrates arranged in a side-by-side manner, wherein the plurality of discrete substrates comprises a central substrate and peripheral substrates surrounding the central substrate, wherein the plurality of discrete substrates are rearranged and adjoined together with a gap therebetween, and wherein the plurality of discrete substrates are adjoined together by using an adhesive that fills into the gap; at least one integrated circuit die mounted on a first surface of the partitioned package substrate; and a plurality of solder balls mounted on a second surface of the partitioned package substrate opposite to the first surface.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The manuscript presents a single claim for a semiconductor package whose substrate is formed by partitioning a conventional substrate into a central block surrounded by peripheral blocks. These discrete pieces are placed side-by-side with gaps that are subsequently filled by an adhesive, thereby creating a mechanically joined, partitioned package substrate. An IC die is mounted on the top surface and solder balls on the bottom surface of the assembled substrate.
Significance. If the adhesive joint were shown to preserve the mechanical rigidity, thermal conductivity, and electrical continuity of a monolithic substrate, the construction could in principle simplify fabrication of very large or heterogeneous substrates. The supplied document, however, contains no data, simulations, material specifications, or reliability results, so no assessment of practical significance or advantage over existing art is possible.
major comments (1)
- [Abstract] Abstract (sole content of the manuscript): The central claim asserts that discrete substrates adjoined by adhesive filling the gaps between them constitute a functional package substrate. No adhesive chemistry, filler content, gap width, trace-routing strategy across gaps, or any mechanical/thermal/electrical performance metric is supplied. Consequently the three load-bearing requirements—(1) delamination-free rigidity over the assembly and operating temperature range, (2) low-resistance continuity for any nets that cross a gap, and (3) negligible added thermal resistance—remain entirely unverified.
minor comments (1)
- [Abstract] The phrasing “rearranged and adjoined together with a gap therebetween” is redundant; a single clause stating that the blocks are placed with controlled gaps subsequently filled by adhesive would be clearer.
Simulated Author's Rebuttal
We thank the referee for the careful reading of our disclosure. The manuscript is a patent claim whose sole purpose is to define a structural architecture for a partitioned package substrate. We address the referee’s observations point by point below.
read point-by-point responses
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Referee: [Abstract] Abstract (sole content of the manuscript): The central claim asserts that discrete substrates adjoined by adhesive filling the gaps between them constitute a functional package substrate. No adhesive chemistry, filler content, gap width, trace-routing strategy across gaps, or any mechanical/thermal/electrical performance metric is supplied. Consequently the three load-bearing requirements—(1) delamination-free rigidity over the assembly and operating temperature range, (2) low-resistance continuity for any nets that cross a gap, and (3) negligible added thermal resistance—remain entirely unverified.
Authors: We agree that the abstract contains no material specifications, dimensions, or performance data. As a single independent claim, the disclosure is deliberately limited to the inventive concept: a substrate assembled from discrete central and peripheral blocks joined by adhesive in the intervening gaps. Specific chemistries, gap widths, routing details, and verification of rigidity, electrical continuity, and thermal resistance are matters for dependent claims or the full patent specification and are outside the scope of the claim presented here. The manuscript therefore does not, and does not purport to, demonstrate that any particular embodiment satisfies the three performance criteria. revision: no
- Absence of experimental data, simulations, or material specifications needed to verify mechanical rigidity, electrical continuity across gaps, and thermal performance of the adhesive joints.
Circularity Check
No circularity: purely descriptive device claim with no derivation or fitted elements
full rationale
The patent abstract contains only a structural claim for a partitioned substrate package. No equations, parameters, predictions, or citations exist, so none of the enumerated circularity patterns (self-definitional, fitted-input prediction, self-citation load-bearing, etc.) can be instantiated. The claim is a definition of a physical arrangement; it does not derive or predict any quantity from itself.
discussion (0)
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