Glass Panel
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Technical Details of Glass Panels

SCHOTT Glass Panels offer an outstanding combination of material and product features tailored to meet the demands of advanced 2.5D and 3D chip packaging. With variable thermal expansion and excellent dielectric properties, combined with optimal surface quality and geometrical precision, SCHOTT Glass Panels making them ideal for high-performance electronic applications. Thanks to its transmittivity for optical signals, glass panels are well prepared for next over next packaging generations such as co-packaged optics.

SCHOTT Glass Panels for advanced semiconductor packaging

Geometrical variability

SCHOTT Glass Panels are available in a wide range of dimensions, including a 510 x 515 mm size and thicknesses ranging from 0.5 to 1.1 mm. Custom sizes are available on request, ensuring strict tolerances to meet the demands on processing and performance of advanced packages.

Tailored thermal expansion

SCHOTT Glass Panels offer a range of coefficients of thermal expansion (CTE) from 3 - 8 ppm/K and above. Ensuring best compatibility with various semiconductors and other partner materials co-assembled in the package.

Superior surface quality and mechanical stability

Featuring a reproducible ultra-smooth surface quality with a roughness less than 1 nm, SCHOTT Glass Panels provide the optimal foundation for fine line metallization with a high peel-off strength. Their outstanding mechanical rigidity ensures reliable performance in demanding high-density interconnect applications.

Ready for high-end structuring

SCHOTT Glass Panels enable both extremely fine copper line structuring on the surface and precise structuring through the glass substrate. The capability to support high-density TGV laser structuring as well as large openings for embedding active and passive components makes them a perfect fit for advanced high-density interconnectivity.
Technical properties
Properties* Specification
CTE range (20 - 300° C)**

3.2  |  3.3  |  5.0  |  7.2
Format 510 x 515 mm
Panel Thickness** (initial)
 0.5 – 1.1 mm
Thickness Tolerance range***
 ± 10 – 20 µm
TTV range***
 ≤ 10 – 20 µm
Warp range***
 ≤ 100 – 200 µm
Scratch/Dig
 40/20
Particles (non-removable)
 ≤ 100 – 200 µm
Edge defects
 ≤ 100 – 200 µm
Edge processing
 round or chamfer shape, grinded

*     Tighter specifications upon request 
**   Other materials or thicknesses upon request
***  Depending on glass type and thickness

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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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