Definition
A wafer backgrinder removes bulk substrate with a rotating abrasive wheel while controlling chucking, coolant, feed, thickness, and stress; an integrated or subsequent polishing step can remove damaged material and improve the backside surface.
Process position
Inputs
- Protected processed wafer
- Grinding wheel
- Coolant
- Thickness and handling recipe
Outputs
- Thinned wafer
- Backside surface
- Thickness and damage record
How it works
- 01Mount and protect device side
- 02Coarse grind backside
- 03Fine grind to target
- 04Polish or stress-relieve where required
- 05Clean, measure, and unload
Role in the production flow
Backgrinding enables thin packages and stacked structures but introduces mechanical damage and handling risk. Protection, grind sequence, stress relief, wafer support, and downstream singulation must be developed together.
Precision equipment that thins a processed wafer from the backside and may polish the surface to reduce damage and control final thickness.
Boundary: The cited manufacturers document the equipment category and its intended uses; this record does not independently validate vendor performance claims or rank products.
Qualification and production boundaries
Qualification must specify incoming wafer structure, target thickness and variation, edge exclusion, wheel and feed sequence, backside finish, die-strength method, temporary support, cleaning, warpage, and downstream handling.
Qualification must specify incoming wafer structure, target thickness and variation, edge exclusion, wheel and feed sequence, backside finish, die-strength method, temporary support, cleaning, warpage, and downstream handling.
Boundary: Actual acceptance limits, recipes, throughput, availability, and ownership economics are product-, process-, site-, and contract-specific.
Sources
Citations support the tagged claims above. Access dates record when Maha Strategies last checked the public source.
- [1]Product and Technology Information · DISCO · accessed 2026-08-24
- [2]Silicon Wafer Thinning, the Singulation Process, and Die Strength · DISCO · 2016 · accessed 2026-08-13