Fused-quartz wafers (synthetic-quartz wafers) in both square and round formats, available in two principal grades depending on the end application. Each is a high-purity quartz substrate engineered for semiconductor processes that depend on thermal stability and chemical inertness.
Grade selection
| Code | Use | Characteristic |
|---|---|---|
| AQ | Optical displays | Normal quartz |
| QJ | High-temperature poly-Si TFT displays | Low OH⁻, few impurities, low birefringence |
Form factors
| Format | Size | Thickness |
|---|---|---|
| Square type | 4″ square – 8″ square | 0.5 – 3.0 mm |
| Wafer type | Ø4″ – Ø12″ | 0.5 – 3.0 mm |
Wafers can be supplied with orientation flats or notches as required by your tooling. Custom thicknesses outside the standard range may be available; contact our Hillsboro team to discuss.
Purity
By inductively coupled plasma mass spectrometry (ICP-MS), all listed metallic impurities measure below 0.6 ppb, with most below 0.3 ppb. That is purity adequate for the most demanding semiconductor and display applications.
Applications
- Optical displays (AQ grade)
- High-temperature poly-Si TFT displays (QJ grade)
- Glass wafers for advanced semiconductor processes
Documents
Documents available on request. Use the form below.
Specifications
Quartz Wafers specifications
Related materials
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AQ / AQ2 / AQ3 / AQT / AQR / QJ / QC-i
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