Ultra SFP copper-overburden removal and planarization
ACM Research · Process equipment and thermal control
- Purpose
- Compare copper-overburden removal and subsequent planarization after TSV fill or fan-out RDL processing.
- Technical approach
- Ultra SFP removes copper electrochemically using electrolyte and power; it can integrate external CMP and wet-etch systems.
- Scope of use
- ACM lists TSV and FOWLP. Its TSV example proceeds through bulk copper removal, CMP to titanium and titanium wet etch.
- Limitations and open questions
These evaluation considerations are compiled by BLNKK from public information. They are not supplier guarantees or a mandatory submission checklist.
Scope and limitationsThe SFP name does not guarantee zero stress or eliminate every warpage mechanism. SFP alone cannot replace the full sequence; the titanium example is not universal.
What to prepareBLNKK suggests preparing copper thickness/distribution, electrical continuity, barrier materials, wafer support, endpoints, and dishing or residue measurements.
Confirm with the supplierConfirm integration responsibilities, chemistry compatibility, endpoint control, and post-process topography and cleanliness validation.
- Public evidence
- The product page explains the mechanism and integrated sequence; sample-specific stacks and endpoints remain to be confirmed.
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Related engineering problems
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BLNKK organizes information from public sources. A company profile does not imply a documented solution. Applicability still needs confirmation against your samples and engineering conditions.