Abstract: A process for producing a plate glass for a display device having a thickness of at most 1.5 mm by a float process, wherein the plate glass comprises, as represented by mole percentage based on the following oxides, from 67 to 75% of SiO2, from 0 to 4% of Al2O3, from 7 to 15% of Na2O, from 1 to 9% of K2O, from 6 to 14% of MgO and from 0 to 1.5% of ZrO2, has a total content of SiO2 and Al2O3 of from 71 to 75%, has a total content Na2O+K2O of Na2O and K2O of from 12 to 20%, and has a content of CaO of less than 1% if contained.

Abstract: To provide a glass plate for display devices wherein without carrying out a post treatment, the depth of a compression stress layer is increased, while the surface compression stress is prevented from being excess only by chemical tempering. A glass plate for display devices, which is obtained by chemically tempering a glass plate comprising, as represented by mol % based on the following oxides, from 50 to 74% of SiO2, from 1 to 10% of Al2O3, from 6 to 14% of Na2O, from 3 to 15% of K2O, from 2 to 15% of MgO, from 0 to 10% of CaO and from 0 to 5% of ZrO2, wherein the total content of SiO2 and Al2O3 is at most 75%, the total content of Na2O and K2O, i.e. Na2O+K2O, is from 12 to 25%, and the total content of MgO and CaO, i.e. MgO+CaO, is from 7 to 15%.

Abstract: The present invention is intended to provide an organic LED element in which the extraction efficiency is improved up to 80% of emitted light, and provides a translucent substrate comprising a translucent glass substrate; a scattering layer formed on the glass substrate and comprising a glass which contains a base material having a first refractive index for at least one wavelength of light to be transmitted and a plurality of scattering materials dispersed in the base material and having a second refractive index different from that of the base material; and a translucent electrode formed on the scattering layer and having a third refractive index higher than the first refractive index, wherein distribution of the scattering materials in the scattering layer decreases toward the translucent electrode.

Abstract: The present invention provides an organic LED element in which the extraction efficiency is improved up to 80% of emitted light. Further, the invention relates to an electrode-attached translucent substrate having a translucent substrate, a scattering layer formed over the glass substrate and containing a base material having a first refractive index for at least one wavelength of wavelengths of emitted light of an organic LED element and a plurality of scattering materials positioned in the base material and having a second refractive index different from that of the base material, and a translucent electrode formed over the scattering layer and having a third refractive index equal to or lower than the first refractive index, in which distribution of the scattering materials in the scattering layer decreases from the inside of the scattering layer toward the translucent electrode.

Abstract: A lens formed of a high-refractivity low-dispersion glass and free of fogging and scorching on its optical-function surface, which is obtained by precision press-molding of an optical glass having a refractive index (nd) of over 1.83, an Abbe's number (?d) of 40 or more and a glass transition temperature (Tg) of 640° C. or lower and containing no Li2O and has one form of a meniscus form, a biconcave form or a plano-concave form.

Abstract: Glass comprising, as represented by mole percentage based on the following oxides, from 50 to 75% of SiO2, from 1 to 15% of Al2O3, from 6 to 21% of Na2O, from 0 to 15% of K2O, from 0 to 15% of MgO, from 0 to 20% of CaO, from 0 to 21% of ?RO (wherein R is Mg, Ca, Sr, Ba and/or Zn), from 0 to 5% of ZrO2, from 1.5 to 6% of Fe2O3, and from 0.1 to 1% of Co3O4.

Abstract: Provided are a process for the production of a precision press-molded article having a high transmittance a method of treating a glass to color or decolor the glass, the process comprising heat-treating a press-molded article containing at least one selected from WO3, Nb2O5 or TiO2 in an oxidizing atmosphere to produce a glass molded article, and the method comprising heat-treating a colored glass containing at least one oxide of WO3 and Nb2O5 in an oxidizing atmosphere to decolor the glass, or heat-treating a glass containing at least one oxide selected from WO3, Nb2O5 or TiO2 in a non-oxidizing atmosphere to color the glass.

Abstract: Provided are a process for the production of a precision press-molded article having a high transmittance and a method of treating a glass to color or decolor the glass, the process comprising heat-treating a press-molded article containing at least one selected from WO3, Nb2O5 or TiO2 in an oxidizing atmosphere to produce a glass molded article, and the method comprising heat-treating a colored glass containing at least one oxide of WO3 and Nb2O5 in an oxidizing atmosphere to decolor the glass, or heat-treating a glass containing at least one oxide selected from WO3, Nb2O5 or TiO2 in a non-oxidizing atmosphere to color the glass.

Abstract: The present invention provides an organic LED element in which the extraction efficiency is improved up to 80% of emitted light. Further, the invention relates to an electrode-attached translucent substrate having a translucent substrate, a scattering layer formed over the glass substrate and containing a base material having a first refractive index for at least one wavelength of wavelengths of emitted light of an organic LED element and a plurality of scattering materials positioned in the base material and having a second refractive index different from that of the base material, and a translucent electrode formed over the scattering layer and having a third refractive index equal to or lower than the first refractive index, in which distribution of the scattering materials in the scattering layer decreases from the inside of the scattering layer toward the translucent electrode.

Abstract: The present invention provides an organic LED element in which the extraction efficiency is improved up to 80% of emitted light. Further, the invention relates to an electrode-attached translucent substrate having a translucent substrate, a scattering layer formed over the glass substrate and containing a base material having a first refractive index for at least one wavelength of wavelengths of emitted light of an organic LED element and a plurality of scattering materials positioned in the base material and having a second refractive index different from that of the base material, and a translucent electrode formed over the scattering layer and having a third refractive index equal to or lower than the first refractive index, in which distribution of the scattering materials in the scattering layer decreases from the inside of the scattering layer toward the translucent electrode.

Abstract: A high-refractivity optical glass which has both a low-temperature softening property suitable for precision press-molding and glass stability suitable for hot-shaping of a preform, which contains, by mass %, 13 to 30% of B2O3, 0.1 to 4% of Li2O, 17 to 35% of ZnO, 15 to 45% of La2O3, 4 to 15% of Ta2O5 exclusive of 15%, 0 to 10% of ZrO2, 0 to 10% of Nb2O5 provided that Ta2O5/(Ta2O5+ZrO2+Nb2O5)>0.3, 0 to 20% of WO3 and 0 to 1% of Sb2O3 and which has a refractive index (nd) of 1.80 to 1.84 and an Abbe's number (?d) of 40.0 to 45.0.

Abstract: Provided is an optical glass having high-refractivity low-dispersion properties, having a low glass transition temperature and having the property of being softened at a low temperature so that a preform therefrom is precision press-moldable, and the optical glass comprises, as essential components, B2O3, La2O3, Gd2O3 and ZnO and has a refractive index (nd) of over 1.86, an Abbe's number (?d) of less than 35 and a glass transition temperature (Tg) of 630° C. or lower.

Abstract: A process for producing a plate glass for a display device having a thickness of at most 1.5 mm by a float process, wherein the plate glass comprises, as represented by mole percentage based on the following oxides, from 67 to 75% of SiO2, from 0 to 4% of Al2O3, from 7 to 15% of Na2O, from 1 to 9% of K2O, from 6 to 14% of MgO and from 0 to 1.5% of ZrO2, has a total content of SiO2 and Al2O3 of from 71 to 75%, has a total content Na2O+K2O of Na2O and K2O of from 12 to 20%, and has a content of CaO of less than 1% if contained.

Abstract: Glass comprising, as represented by mole percentage based on the following oxides, from 50 to 75% of SiO2, from 1 to 15% of Al2O3, from 6 to 21% of Na2O, from 0 to 15% of K2O, from 0 to 15% of MgO, from 0 to 20% of CaO, from 0 to 21% of ?RO (wherein R is Mg, Ca, Sr, Ba and/or Zn), from 0 to 5% of ZrO2, from 1.5 to 6% of Fe2O3, and from 0.1 to 1% of Co3O4.

Abstract: An organic LED element having improved reliability in a long-term use, and having improved external extraction efficiency up to 80% of emitted light is provided. A substrate for an electronic device according to the present invention includes: a translucent substrate; a scattering layer including a glass and being provided on the translucent electrode; a coating layer provided on the scattering layer; and scattering materials that are present in the scattering layer and the coating layer and are not present on a surface of the coating layer, in which a surface of the coating layer has waviness in which a ratio Ra/R?a of waviness height Ra to waviness period R?a exceeds 1.0×10?4 and is 3.0×10?2 or less.

Abstract: The present invention is intended to provide an organic LED element in which the extraction efficiency is improved up to 80% of emitted light, and provides a translucent substrate comprising a translucent glass substrate; a scattering layer formed on the glass substrate and comprising a glass which contains a base material having a first refractive index for at least one wavelength of light to be transmitted and a plurality of scattering materials dispersed in the base material and having a second refractive index different from that of the base material; and a translucent electrode formed on the scattering layer and having a third refractive index higher than the first refractive index, wherein distribution of the scattering materials in the scattering layer decreases toward the translucent electrode.

Abstract: Provided is an optical glass having high-refractivity low-dispersion properties, having a low glass transition temperature and having the property of being softened at a low temperature so that a preform therefrom is precision press-moldable, and the optical glass comprises, as essential components, B2O3, La2O3, Gd2O3 and ZnO and has a refractive index (nd) of over 1.86, an Abbe's number (vd) of less than 35 and a glass transition temperature (Tg) of 630° C. or lower.

Abstract: Provided is a precision press-molding optical glass that is not easily degraded in quality by the occurrence of an altered layer such as fogging or yellowing on a surface and that comprises B2O3, ZnO, La2O3 and ZrO2 and contains, by mol %, 0 to less than 0.5% of Li2O, 20 to 50% of B2O3, 0 to 20% of SiO2, 22 to 42% of ZnO, 5 to 24% of La2O3, 0 to 20% of Gd2O3, provided that the total content of La2O3 and Gd2O3 is 10 to 24%, 0.5 to 10% of ZrO2, 0 to 15% of Ta2O5, 0 to 20% of WO3, 0 to 15% of Nb2O5, 0 to 20% of TiO2, 0 to 10% of Bi2O3, 0 to 10% of GeO2, 0 to 10% of Ga2O3, 0 to 10% of Al2O3, 0 to 10% of BaO, 0 to 10% of Y2O3 and 0 to 10% of Yb2O3, the optical glass having an Abbe's number (?d) of at least 35 but less than 40.

Abstract: To provide a glass plate for display devices wherein without carrying out a post treatment, the depth of a compression stress layer is increased, while the surface compression stress is prevented from being excess only by chemical tempering. A glass plate for display devices, which is obtained by chemically tempering a glass plate comprising, as represented by mol % based on the following oxides, from 50 to 74% of SiO2, from 1 to 10% of Al2O3, from 6 to 14% of Na2O, from 3 to 15% of K2O, from 2 to 15% of MgO, from 0 to 10% of CaO and from 0 to 5% of ZrO2, wherein the total content of SiO2 and Al2O3 is at most 75%, the total content of Na2O and K2O, i.e. Na2O+K2O, is from 12 to 25%, and the total content of MgO and CaO, i.e. MgO+CaO, is from 7 to 15%.

Abstract: Provided is an optical glass having high-refractivity low-dispersion properties, having a low glass transition temperature and having the property of being softened at a low temperature so that a preform therefrom is precision press-moldable, and the optical glass comprises, as essential components, B2O3, La2O3, Gd2O3 and ZnO and has a refractive index (nd) of over 1.86, an Abbe's number (vd) of less than 35 and a glass transition temperature (Tg) of 630° C. or lower.