摘要 |
A soda-lime glass substrate formed through a heat-treatment method has an absorption coefficient ranging from about 0.15 lambda,W/m.K to about 0.54 lambda,W/m.K, and a free path length ranging from about 0.12 cm to about 0.24 cm. The heat-treated soda-lime glass substrate is formed by heating for a selected time at a pre-specified maximum temperature of about 270° C. to about 330° C. so as to remove thermally induced residual deformations from the substrate and then the substrate is slowly cooled so as to substantially avoid reintroducing thermally induced residual deformations into the cooling substrate. Thus, the soda-lime glass substrate is transformed to one at or close to its contraction saturation point. This allows the heat-treated soda-lime glass substrate to serve in a practical way as a substrate of a flat display panel.
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