WSS temporary wafer bonding and debonding
3M · Material properties and interface engineering
- Purpose
- Wafer thinning and backside processing require temporary support followed by controlled release. WSS combines carriers and bonding/removal materials for evaluating thin-wafer handling and debonding flows.
- Technical approach
- A glass carrier, UV-curable adhesive and light-to-heat-conversion release coating form the supported stack. After processing, laser debonding releases the carrier; removal tape then peels away the UV adhesive layer.
- Scope of use
- Named applications include thin silicon/SiC wafers, IGBT, FOWLP/FOPLP, MEMS and 3D TSVs. Select the adhesive grade against wafer topology, process chemicals and the actual thermal history.
- 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 limitationsWSS includes different adhesive grades, not one family-wide thermal limit. Website/brochure temperature units and throughput wording conflict; confirm current grade data. Laser release alone does not guarantee damage- or residue-free specimens.
What to prepareBLNKK recommends preparing target wafer thickness, surface topology, carrier/release-layer configurations, process chemicals and full thermal histories. Include removal plans and checks for cracks, chipping, residue and TTV.
Confirm with the supplierConfirm current adhesive/LTHC/tape availability and UV/laser equipment compatibility. Ask for grade-specific temperature/time and chemical windows, and acceptance criteria for carrier release, peeling and any required cleaning.
- Public evidence
- The website and 2024 WSS brochure document the bonding, processing and removal flow, with separate grade-dependent temperature/time guidance. They do not qualify residue, damage or yield on a customer stack.
Supporting references
Contact the supplier
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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.