Abstract: A display device comprising: a first substrate; a plurality of pixels provided to the first substrate; a light emitting element provided to each of the pixels; a phosphor layer covering at least an upper surface of the light emitting element; a first reflective layer facing a side surface of the light emitting element; and a second reflective layer provided to a side surface of the phosphor layer, separated from the first reflective layer in a normal direction of the first substrate, and disposed farther away from the first substrate than the first reflective layer.

Abstract: A glass composition for lamps includes the following by weight percent: SiO2: 60-75 wt %; CeO2+Ce2O3: 0.01-5.2 wt %; SnO+SnO2: 0.01-5.2 wt %; Al2O3: 0.5-6 wt %; B2O3: 0-5 wt %; Li2O+Na2O+K2O: 13-20 wt %; MgO: 0.5-5 wt %; CaO: 1-10 wt %; SrO: 0-10 wt %; BaO: 0-10 wt %; ZnO: 0-10 wt %; Fe2O3+FeO: 0-0.2 wt %; and TiO2: 0-1 wt %. The glass composition for lamps that contains no lead or antimony achieves high ultraviolet screening capacity, ensuring fewer occurrences of initial coloring and ultraviolet ray caused coloring of glass.

Abstract: A glass composition for lamps includes the following by weight percent: SiO2: 60-75 wt %; CeO2+Ce2O3: 0.01-5.2 wt %; SnO+SnO2: 0.01-5.2 wt %; Al2O3: 0.5-6 wt %; B2O3: 0-5 wt %; Li2O+Na2O+K2O: 13-20 wt %; MgO: 0.5-5 wt %; CaO: 1-10 wt %; SrO: 0-10 wt %; BaO: 0-10 wt %; ZnO: 0-10 wt %; Fe2O3+FeO: 0-0.2 wt %; and TiO2: 0-1 wt %. The glass composition for lamps that contains no lead or antimony achieves high ultraviolet screening capacity, ensuring fewer occurrences of initial coloring and ultraviolet ray caused coloring of glass.

Abstract: <br></br> A glass composition contains the following constituents expressed in terms of oxides: 65 wt % to 75 wt % of SiO2; 1 wt % to 5 wt % of Al2O3; 0.5 wt % to 5 wt % of Li2O; 5 wt % to 12 wt % of Na2O; 3 wt % to 7 wt % of K2O; 12 wt % to 18 wt % of Li2O+Na2O+K2O; 2.1 wt % to 7 wt % of MgO; 2 wt % to 7 wt % of CaO; 0 wt % to 0.9 wt % of SrO; 7.1 wt % to 12 wt % of BaO; and substantially no PbO. The glass composition for a lamp is substantially lead-free, has an electrical insulation suitable for an illumination purpose, and further reduces the risk of devitrification.