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Aluminosilicate glass for flat display devices

  • US 6,087,284 A
  • Filed: 05/26/1998
  • Issued: 07/11/2000
  • Est. Priority Date: 05/24/1997
  • Status: Expired due to Term
First Claim
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1. Solarization-stable aluminosilicate glass having the following composition, in % by weight, based on oxide:

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    space="preserve" listing-type="tabular">______________________________________ SiO.sub.2 45 -- 68 Al.sub.2 O.sub.3 9 -- 18 Na.sub.2 O 0 -- 5 K.sub.2 O >

    9 -- 15 where Na.sub.2 O + Ka.sub.2 O ≧

    10 CaO 0 -- 9 SrO 4.8 -- <

    17 BaO 0 -- 10 where CaO + SrO + BaO 8 -- <

    17 ZrO.sub.2 1 -- 6 TiO.sub.2 0.2 -- 5 ______________________________________ and, optionally refining agents in conventional amounts, provided that, apart from unavoidable contaminants in no more than trace amounts, it is free from MgO.

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