Patent ID: 8575834

Claim:
A glass for a scattering layer of an organic LED element, which contains, in terms of mol % on the basis of oxides, 0˜20% of P 2 O 5 , 15˜60% of B 2 O 3 , 15˜28% of Bi 2 O 3 and 20˜50% of ZnO, wherein a value obtained by dividing the content of P 2 O 5 by the content of ZnO is less than 0.48, the sum of the contents of P 2 O 5 and B 2 O 3 is 30˜60%, the content of P 2 O 5 is 10% or less when the sum of the contents of P 2 O 5 and B 2 O 3 exceeds 50%, and the glass does not substantially contain lead (PbO or Pb 3 O 4 ), Li 2 O, Na 2 O and K 2 O, except for those contained as impurities.