ALKALI-FREE GLASS SUBSTRATE AND PROCESS FOR PRODUCING THE SAME
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Feb 22, 2012
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Dec 16, 2005
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Abstract
The invention provides an alkali-free glass substrate small in the variation of the thermal shrinkage and a process for producing the same. An alkali-free glass substrate of the invention has an absolute value of a thermal shrinkage of 50 ppm or more when the alkali-free glass substrate is heated at a rate of 10° C./min from a room temperature, kept at a holding temperature of 450° C. for 10 hr and then cooled at a rate of 10° C./min.
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