COVER GLASS FOR SOLID-STATE IMAGE PICKUP ELEMENT

PURPOSE:To obtain cover glass usable in a solid-state image pickup device on which micro-elements are mounted because the cover glass is excellent in weather resistance, can be melted at, a low temp. and has high homogeneity. CONSTITUTION:This cover glass has a compsn. consisting of, by weight, 62.0...

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1. Verfasser: ONODA TAKUHIRO
Format: Patent
Sprache:eng
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Zusammenfassung:PURPOSE:To obtain cover glass usable in a solid-state image pickup device on which micro-elements are mounted because the cover glass is excellent in weather resistance, can be melted at, a low temp. and has high homogeneity. CONSTITUTION:This cover glass has a compsn. consisting of, by weight, 62.0-75.0% SiO2, 4.0-10.0% Al2O3, 8.0-15.0% B2O3, 7.0-20.0%, in total, of 0-3.0% Li2O, 10.0-12.5% Na2O and 0-2.0% K2O, and 0.3-15.0%, in total, of 0-10.0% MgO, 0-10.0% CaO, 0.3-5.0% ZnO and 0-4.0% BaO.