Patents Assigned to Ambro Co., Ltd.
  • Patent number: 8766524
    Abstract: A lead-free glass material for sealing organic EL elements is provided with which satisfactory sealing quality is obtained through laser sealing without requiring the addition of a metallic powder. The lead-free glass material for sealing organic EL elements has a glass composition which comprises, in terms of mol %, 30-60% V2O5, 5-20% ZnO, 5-20% BaO, 15-40% TeO2, 0-7% Nb2O5, 0-7% Al2O3, 0-5% SiO2, 0-5% MgO, 0-5% Sb2O3, 0-4% CuO, and 0-4% SnO and in which Nb2O5+Al2O3 is 0.5-10%, SiO2+MgO+Sb2O3 is 0-5%, and CuO+SnO is 0-4%. The glass material has low-temperature softening properties, melt stability, and a low coefficient of thermal expansion and is inhibited from thermally adversely affecting organic EL elements The glass material can attain high sealing properties and high sealing strength in high yield.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: July 1, 2014
    Assignees: Yamato Electronic Co., Ltd., Ambro Co., Ltd.
    Inventors: Yoshihiro Kohara, Akihiro Ota, Seungwoo Lee