Substrates and Wafers

SCHOTT wafers are available as two different variants: unpolished, down-drawn wafers and polished wafers for the highest levels of precision. The unpolished variant offers an extraordinarily pristine surface, while the polished variant delivers industry-leading TTV and flatness performance.
Unpolished substrates and wafers

Unpolished substrates and wafers

SCHOTT's proprietary down-draw process for manufacturing glass wafers and substrates results in a large number of impressive technical properties. The process involves a series of high-end solutions that offer glass thicknesses between 30 µm to 1.1 mm, all with a pristine surface quality.


Due to very a low surface roughness below 0.5 nm and tight tolerances across our product range, the down-draw technique produces pristine surfaces perfectly suited for etching, coating and bonding. 


  • Accurate and high-yield etching in semiconductor applications.
  • Excellent transmission properties.
  • Adhesion behavior makes it easy to apply substrate coatings.  
  • Wide range of glass types and thicknesses available, from 30 µm to 1.1 mm.
Polished substrates and wafers

Polished substrates and wafers

SCHOTT offers a variety of glass wafer products manufactured using state-of-the-art production processes. This delivers excellent quality wafers with exceptional flatness and a very low total thickness variation (TTV), resulting in highly reliable performance in applications where precision is paramount.


SCHOTT’s polished substrates and wafers offer an extremely low TTV below 0.6 µm, along with high flatness that ensures less warping or bowing of the glass. They are perfectly suited to wafer-level packaging and glass carrier wafer applications for 3D IC, RF IC, and wafer-level fan-out packaging. With a wide range of high-quality materials available from SCHOTT’s acclaimed portfolio, the possibilities are almost endless.


  • Extremely low TTV and superior flatness.
  • Perfectly suited to highly precise 3D IC stacking processes.
  • Various glass types available, enabling different bonding processes, such as temporary laser bonding, anodic bonding, and others.
  • Also ideal as a substrate for wafer-level fan-out packaging.
  • Outstanding dielectric properties.

Want to know more? Let’s talk

Whether you need more information, samples, a quote, or advice for a project, we would be delighted to talk to you.

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