Hardened glass substrate, and method for production thereof

Hardened glass substrate, and method for production thereof

  • CN 101,679,105 B
  • Filed: 06/03/2008
  • Issued: 06/17/2015
  • Est. Priority Date: 06/07/2007
  • Status: Active Grant
First Claim
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1. a hardened glass substrate, its surface has compressive stress layers, it is characterized in that, described hardened glass substrate has the surface of not grinding, for the protection of with glass, as glass ingredient, in mass %, containing SiO 240 ~ 70%, Al 2o 312 ~ 25%, B 2o 30 ~ 10%, Li 2o0 ~ 1.9%, Na 2o6 ~ 15%, K 2o0 ~ 10%, Li 2o+Na 2o+K 2o13 ~ 20%, MgO0 ~ 3.9%, CaO0 ~ 5%, ZnO0 ~ 5%, ZrO 20 ~ 6%, SrO+BaO0 ~ 5%, and in mass fraction, (MgO+ZrO 2+ ZnO)/(MgO+ZrO 2+ ZnO+Al 2o 3) value be 0.25 ~ 0.45.

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