A glass substrate for a display, which has a strain point of at least 550.degree. C., an average linear expansion coefficient of from 65.times.10.sup.-7 to 100.times.10.sup.-7 /.degree.C. within a range of from 50 to 350.degree. C. and a ratio K.sub.IC /d of at least 280 Pa.multidot.kg.multidot.m.sup.7/2 where K.sub.IC is the fracture toughness and d is the density.

Un substrato de cristal para una exhibición, que tiene un punto de la tensión por lo menos de 550.degree. C., un coeficiente linear medio de la extensión de 65.times.10.sup.-7 a 100.times.10.sup.-7 /.degree.C. dentro de una gama de a partir del 50 a 350.degree. La C. y un cociente K.sub.IC /d por lo menos de 280 Pa.multidot.kg.multidot.m.sup.7/2 donde está la dureza de la fractura y la d K.sub.IC es la densidad.

 
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