Reflective frame for light-emitting element, substrate for light-emitting element and light-emitting device
AssigneeAsahi Glass Company, Limited
InventorsMasamichi Tanida, Akihiro Hishinuma
Life of this patent
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Abstract
To provide a reflective frame for a light-emitting element, which can be preferably used for a light-emitting device having a metal member on which a light-emitting element is mounted, whereby the light extraction efficiency, the reliability and the productivity, etc. can be improved. A reflective frame for a light-emitting element, which is made of a sintered body comprising a glass material and a ceramic powder; and the sintered body is one fired at at most 900° C. and has a porosity of at most 15% and an average reflectance at a wave length of from 400 to 700 nm being at least 86% when the thickness is 1 mm.
Claims10
A reflective frame for a light-emitting element, which is formed to surround a mounting portion of a metal member on which a light-emitting element is mounted, and which is made of a sintered body comprising a glass material and a ceramic powder;
- wherein the glass material comprises, as based on oxides, from 15 to 25 mol % of SiO2, from 25 to 40 mol % of B2O1, from 0 to 10 mol % of ZnO, from 0 to 5 mol % of Li2O+Na2O+K2O, from 20 to 35 mol % of CaO, from 20 to 40 mol % of CaO+MgO+BaO+SrO, from 0 to 5 mol % of TiO2 and from 0 to 5 mol % of Al2O3;
- and the sintered body is one fired at at most 900° C. and has a porosity of at most 15% and an average reflectance at a wave length of from 400 to 700 nm being at least 86% when the thickness is 1 mm.
A reflective frame for a light-emitting element, which is formed to surround a mounting portion of a metal member on which a light-emitting element is mounted, and which is made of a sintered body comprising a glass material and a ceramic powder, wherein the glass material comprises, as based on oxides, from 15 to 45 mol % of SiO2, from 0 to 10 mol % of B2O3, from 0 to 5 mol % of ZnO, from 15 to 30 mol % of LieO+Na2 O+K2 O, from 5 to 20 mol % of CaO, from 5 to 20 mol % of CaO+MgO+BaO+SrO, from 5 to 20 mol % of TiO2 and from 0 to 10 mol % of Al2O3;
- and the sintered body is one fired at at most 900° C. and has a porosity of at most 15% and an average reflectance at a wave length of from 400 to 700 nm being at least 86% when the thickness is 1 mm.
Dependencies are inferred from the claim text.