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Glass Wafers made of technical glass materials

Typical Applications

  • Glass wafers for anodic bonding with silicon
  • Micro lithography applications
  • Wafer glass for semiconductor technology
  • Optical substrates
  • Substrates for micro optics
  • Micro-electromechanical systems (MEMS)
  • Glass Substrates for electronic circuits
  • Wafers for microstructuring applications
  • Replacement for PYREX® 7740 wafers
  • Semiconductor and electronic packaging

The term "wafer" comes from the semiconductor industry and refers to the typical shape of a round silicon wafer. Our extensive range of high quality glass wafers includes wafers made from the widest selection of specialty glass. For the for the semiconductor industry we regularly manufacture polished glass wafers made of borosilicate glass like BOROFLOAT® or MEMpax® from SCHOTT. Both materials have about the same coefficient of thermal expansion as the discontinued PYREX 7740 glass from CORNING and represent high-quality replacement materials for PYREX®. Those wafers are often used for anodic bonding processes of glass with silicon, because the coefficients of thermal expansion of these materials is close to the one of silicon. As well, we produce wafers of low-alkali glass, optical grade glass and various very other special high quality glass types. An overview about the glass materials we use for the production of glass wafers can be found on this website under the heading "Standard Glass Wafers" on the right.

 

Typical glass wafer design

Borofloat glass wafer made for the semiconductor industry

The picture above shows a double side polished round glass wafer made of borosilicate glass. Such glass wafers are typically used in semiconductor technology for anodic bonding and MEMS applications.

 

The wafers have, depending on the material, either polished or very high-quality fire-polished surfaces. These fire-polished glass materials often offer an even better micro roughness and smoothness than mechanically polished glass materials do. Our standard wafers usually offer an excellent flatness which in the case of fire-polished materials ultimately is depending on the properties and precision of the raw glass. Numerous MEMS applications and a variety of other micro-optical applications are possible with most of these glass wafers. Electronic packaging of optoelectronic semiconductor components also is a common application. Last but not least, many wafers made of these high quality specialty glass materials are used in research and for a wide range of scientific applications.

We are continuously producing wafers made of quartz glass, fused silica and numerous other special glasses. But we also process glass wafers for more moderate requirements made of more economical glass materials, such as our selected float glass which are often used as so-called "dummy wafers". Also such kind of glass wafers are part of our daily production and can often lead to significant cost savings.

Our standard glass wafers can be supplied with a SEMI-standard flat as known from silicon wafers, used for the manufacturing of semiconductor chips. If necessary, however, it is also possible to process custom dimensions and shapes. A special CNC-machining and edge configuration design is also an option for some materials at sufficiently large quantities. In the case of large production-batches, special edge shapes and notches, as are customary for example in the semiconductor industry, can be applied. In addition to the specifications listed in this data sheet, we have the technology for the precision fabrication of custom glass wafers with a decreased total thickness variation (TTV) as well as for the manufacturing of an increased surface quality and custom polishing qualities on demand. If you have any query about our machining options and capabilities, just contact us. We will gladly answer your questions.

Please use our inquiry form to request a quotation for your glass wafer made of borosilicate glass or from any other glass material based on a custom design. Or ask for an offer for our always available glass wafers listed in this website. Just click on one of the possible thicknesses listed on the right.

To send an inquiry about a custom machined glass wafer you haven't found in this website please click on the following button:

 

Request a quotation for
a custom glass wafer

 

Standard Glass Wafers

The following glass wafers are available practically at any time, usually even within the scope of our 48h-Express Optics Service. Please click on the desired thickness to request the respective wafer:

 

Version CNC-precison-cut, no bevel:

If required with SEMI-standard flat (please specify, if required). TTV and surface quality depending on the material:

 

Wafer made of AF 32® eco (alkali-free glass)
Wafer made of AF 45 (alkali-free glass)
  • Diameter: 50 mm, 75 mm, 100 mm, 150 mm, 200 mm, 300 mm or 2", 3", 4", 6", 8", 12"
  • Thicknesses: 0,7 mm
Wafer made of AS 87 eco (thin glass)
  • Diameter: 50 mm, 75 mm, 100 mm, 150 mm, 200 mm or 2", 3", 4", 6", 8"
  • Thicknesses: 0,175 mm
Wafer made of BK7 (optical glass)
Wafer made of BOROFLOAT® (borosilicate glass)
  • Diameter: 50 mm, 75 mm, 100 mm, 150 mm, 200 mm, 300 mm or 2", 3", 4", 6", 8", 12"
  • Thicknesses: 0,70 mm ; 1,10 mm
Wafer made of D 263 T (thin display glass)
Wafer made of EAGLE2000 (alkali-free glass)
  • Diameter: 50 mm, 75 mm, 100 mm, 150 mm, 200 mm, 300 mm or 2", 3", 4", 6", 8", 12"
  • Thicknesses: 0,70 mm ; 1,10 mm
Wafer made of 1737F (alkali-free glass)
  • Diameter: 50 mm, 75 mm, 100 mm, 150 mm, 200 mm, 300 mm or 2", 3", 4", 6", 8", 12"
  • Thicknesses: 0,70 mm ; 1,10 mm
Wafer made of MEMpax® (borosilicate thin glass)
Wafer made of selected float glass
(soda-lime glass)
Wafer made of UV-grade quartz glass,
double side optically polished
  • Diameter: 50 mm, 75 mm, 100 mm
    or 2", 3", 4"
  • Thicknesses: 0,30 mm ; 0,50 mm ; 1,00 mm
  • Transmission > 80% at 185nm

 

Version ground edge, C-shaped:

All wafers in this category have a primary flat with a length of 32.5mm (+/- 1,0).

 

Wafer made of BOROFLOAT® (borosilicate glass)

 

48h- Express Service icon


48-h Express Optics Service available

The above mentioned wafers are nearly all constantly available also within the scope of our express service, which offers the manufacturing, packaging and shipping of the glass wafers above within two working days. more...

 

Of course custom precision machining and precision polishing is possible at batch quantities. Please send your request in case the glass wafers above don't meet your process requirements or require special polishing finishes.

 

All given details and specifications are mean reference values and are not guaranteed. In addition, please consider our "Notes on technical specifications"