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Glass Wafers of specialty glass materials

Borosilicate, alkali-free, ultra thin, optical grade and specialty glass

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" originally emerged in 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 a wide selection of specialty glass materials.

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. Hence, they represent high-quality replacement materials for PYREX®. Those wafers are often used for anodic bonding processes of glass with silicon, because the thermal expansion of these materials is close to the one of silicon.

As well, we produce wafers of alkali-free or low-alkali glass like AF 32® eco, 1737F, EAGLE 2000 and AF 45 and of optical glass types like BK7, UV-grade Fused Silica or quartz glass. Furthermore we fabricate glass wafers from quality specialty glass types like AS 87 eco, D 263 T and not least from our low-cost selected float glass materials. An overview about the glass materials we use for the production of glass wafers and the thicknesses available almost at any time can be found on this website under the heading "Standard Glass Wafers" on the right.

 

Typical glass wafer shape

Borofloat glass wafer made for the semiconductor industry

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

 

Our wafers have, depending on the material, either polished or very high-quality fire-polished surfaces. The fire-polished glass wafers often offer an even better micro roughness and smoothness than mechanically polished glass materials do. The standard glass 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 based on these precision glass wafers. Electronic packaging of optoelectronic semiconductor components is a common application for some of the thin and ultra thin glass types. Many wafers made of these high quality specialty glass materials are used in science and research for a wide range of scientific applications.

But we also process glass wafers for more moderate requirements that are made of more economical glass like our selected float glass, which is often used for so-called "dummy wafers". Such kind of glass-wafers are also part of our daily production. They can lead to significant cost savings.

Our standard glass wafers can have a SEMI-standard flat, like most silicon wafers that are used for the manufacturing of semiconductor chips have. If necessary, the machining of custom dimensions and shapes is possible too. At sufficiently large quantities, special CNC-machining and a customized edge configuration design is an option as well. In the case of large production-batches, custom 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 glass-wafer 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 wafers made of borosilicate glass or from any other glass material based on a customized design. Or ask for an offer for our constantly obtainable glass-wafers that are listed in this website. Just click on one of the possible wafer thicknesses listed on the right to initiate the RFQ process.

 

In order 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 customized 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 a quote for 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 (ultra 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 (ultra 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
(UV-grade fused silica)
  • 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 SEMI-std-flat with a length of 32,5 mm (+/- 1,0).

 

Glass Wafers 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 other precision machining and precision polishing of all glass wafers 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"