Organic LED element, glass frit for diffusion layer for use in organic LED element, and method for production of diffusion layer for use in organic LED element
AssigneeAsahi Glass Company, Limited
InventorsYumiko Aoki, Naoya Wada, Nobuhiro Nakamura, Yasuko Osaki
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Abstract
The present invention relates to an organic LED element sequentially including: a transparent substrate; a scattering layer; a first electrode; an organic layer; and a second electrode, in which the scattering layer includes a first glass material and a second glass material dispersed in the first glass material and having a different refractive index from the first glass material.
Claims14
An organic LED element sequentially comprising:
- a transparent substrate;
- a scattering layer;
- a first electrode;
- an organic layer;
- and
- a second electrode,
- wherein the scattering layer includes a first glass material and a second glass material dispersed in the first glass material and having a different refractive index from the first glass material, and
- wherein the scattering layer comprises SiO2—B2O3—Bi2O3—ZnO-based glass, and the second glass material contains SiO2 or B2O3 of which the contents are larger and Bi2O3 of which the content is smaller than the first glass material in terms of mol % on the basis of oxides.
A glass frit for a scattering layer of an organic LED element, comprising at least powder of first glass and powder of second glass,
- wherein the first glass has a refractive index of 1.80 or more which is measured at 25° C. by d line of a He lamp (wavelength of 587.6 nm),
- the second glass contains SiO2 or B2O3 of which the contents are larger and Bi2O3 of which the content is smaller than the first glass in terms of mol % on the basis of oxides, and
- a ratio of the powder of the first glass in the glass frit is 70-99 volume %.
An organic LED element sequentially comprising:
- a transparent substrate;
- a scattering layer;
- a first electrode;
- an organic layer;
- and
- a second electrode,
- wherein the scattering layer includes a first glass material and a second glass material dispersed in the first glass material and having a different refractive index from the first glass material, and
- the scattering layer contains, in terms of mol % on the basis of oxides, B2O3 of 15-63%, Bi2O3 of 10-37%, ZnO of 10-50%, SiO2 of 0-20%, Al2O3 of 0-10%, P2O5 of 0-20%, ZrO2 of 0-5%, Gd2O3 of 0-10%, TiO2 of 0-13%, the sum of Li2O, Na2O and K2O of 0-2%, and the sum of MgO, CaO, SrO and BaO of 0-10%.
A glass frit for a scattering layer of an organic LED element, comprising at least powder of first glass and powder of second glass,
- wherein the first glass has a refractive index of 1.80 or more which is measured at 25° C. by d line of a He lamp (wavelength of 587.6 nm),
- the second glass contains SiO2 or B2O3 of which the contents are larger and Bi2O3 of which the content is smaller than the first glass in terms of mol % on the basis of oxides, and
- a ratio of the powder of the first glass in the glass frit is 15-99 volume %.
Dependencies are inferred from the claim text.