Glass Polishing Process
Single Side Polishing
Once reduced to near final thickness through single-side lapping, a similar proprietary process is used to polish the surface clear and produce surface qualities to as low as 10/5 scratch and dig with sub-nanometer surface roughness.
Double Side Polishing
After lapping to thickness, the opaque surface is first cleared through our First (or Commercial) Polishing Process. With typical scratch and dig results of 60/40 and roughness of <1nm, this can be the final stage for less critical surface requirements.
Double Side Final Polishing
Our double-side final polishing process maintains the flatness and parallelism characteristics achieved through the lapping process while creating a pristine surface with low roughness and surface defects. We can generally achieve scratch and dig specs as low as 5/2 and roughness to 5 Angstroms.
Double Side Super Polishing
Where extremely smooth surfaces are required, our Super Polish process can achieve roughness as low as 2 Angstroms while effectively eliminating any sub surface damage from previous lapping and polishing processes.
Common Terms for Polishing
Polishing Capabilities
| Polish | Minimum | Maximum | Tolerance |
|---|---|---|---|
| Flatness | 1/10 Wave | NA | NA |
| Bow/Warp | <1um/Inch | NA | NA |
| TTV | NA+/-1um | ||
| Thickness | 200um | NA | +/-5um |
| Size | 10mm | 300mm | +/-0.10mm |
