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Alkali Free Borosilicate:
Corning® 1737 represents the second generation of fusion-formed alumino-silicate sheet glass. Introduced in 1994, Corning® 1737 glass offered superior performance attributes and quickly replaced 7059 as the industry standard. Corning® 1737 has remained the leading non-alkaline LCD substrate glass that all others are measured against for consistently high quality worldwide.
Special Properties
- Near Zero Alkali Composition
- High Thermal Shock Resistance
- Good Flatness and Surface Quality
- Low Thermal Coefficient of Expansion
Typical Applications
- Substrate for Filter or Mirror Coatings
- Thin Film Substrate for Electronic applications
- Active Matrix Flat Panel Displays (AMLCD)
- Electroluminescent Displays
- Optical Windows
1737 glass is a near zero alkali alumino-silicate glass material with a high temperature and shock resistance. The material can withstand the rigorous cycles of the newer poly-silicon transistor processes.
The special properties of this material besides its strain point of 666°C allow special manufacturing processes for various electronic components. The material has proven to be a good choice when used as an optical substrate for filter or mirror coatings in many applications. 1737 is more durable than 7059 and has an even lower level of alkali than 7059. In most applications un-annealed 1737 can replace even annealed 7059, resulting in a material cost savings to the user.
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Glass Code: Corning | 1737 | |
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Type | Alkali Free Borosilicate | |
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Color | Clear | |
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Principal Use | Optics & electrical substrates | |
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Thermal Expansion Multiply by 10-7cm/cm/°C | 0 - 300°C. | 37.6 |
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Viscosity Data This data is subject to normal manufacturing variations. | Strain point °C. | 666 |
Annealing point °C. | 721 | |
Softening point °C. | 975 | |
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Density g/cm3 | 2. 54 | |
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Log10 of Volume Resistivity ohm/cm. | 250°C | 13.5 |
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Dielectric Properties (1 KHz 20°C) | Dielectric constant | 5.7 |
Loss factor % | .10 | |
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Refractive index @ 589 nm | 1. 518 | |
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Transmittance (t=O.7mm) | ̃70% (320 nm) ̃90% (360 nm) >90% (380-2600 nm) | |
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