GLASS FOR DIFFUSION LAYER IN ORGANIC LED ELEMENT, AND ORGANIC LED ELEMENT UTILIZING SAME.

摘要

A glass for a diffusion layer for use in an organic LED element, which contains, in a mol% in terms of an oxide content, 0 to 20% of P₂O₅, 15 to 60% of B₂O₃, 15 to 28% of Bi₂O₃ and 20 to 50% of ZnO, wherein the value determined by dividing the content of P₂O₅ by the content of ZnO is less than 0.48, the sum total of the contents of P₂O₅ and B₂O₃ is 30 to 60%, the content of P₂O₅ is 10% or less when the sum total of the contents of P₂O₅ and B₂O₃ is more than 50%, and lead (PbO or Pb₃O₄), Li₂O, Na₂O and K₂O are not substantially contained unless these components are contained as impurities.