摘要:
A plasma display device is provided in which deterioration in brightness of phosphor layers can be avoided. The plasma display device includes a plasma display panel in which a plurality of discharge cells in one color or in a plurality of colors are arranged and phosphor layers are arranged so as to correspond to the discharge cells in colors and in which light is emitted by exciting the phosphor layers with ultraviolet rays. The phosphor layers include blue phosphor, the blue phosphor being composed of an alkaline-earth metal aluminate phosphor containing at least one element selected from the group consisting of Mo and W. The addition of hexavalent ions (Mo, W) in the blue phosphor allows the elimination of oxygen defects in the vicinity of a layer containing Ba atoms (Ba—O layer), the suppression of adsorption of water to the surface of the blue phosphor and the improvement of deterioration in brightness and a change in chromaticity for the respective phosphors and discharge characteristics.
摘要:
A plasma display device is provided in which deterioration in brightness of phosphor layers can be avoided. The plasma display device includes a plasma display panel in which a plurality of discharge cells in one color or in a plurality of colors are arranged and phosphor layers are arranged so as to correspond to the discharge cells in colors and in which light is emitted by exciting the phosphor layers with ultraviolet rays. The phosphor layers include blue phosphor, the blue phosphor being composed of an alkaline-earth metal aluminate phosphor containing at least one element selected from the group consisting of Mo and W. The addition of hexavalent ions (Mo, W) in the blue phosphor allows the elimination of oxygen defects in the vicinity of a layer containing Ba atoms (Ba—O layer), the suppression of adsorption of water to the surface of the blue phosphor and the improvement of deterioration in brightness and a change in chromaticity for the respective phosphors and discharge characteristics.
摘要:
Phosphor and a plasma display device are provided whose deterioration in brightness of phosphors and a degree of change in chromaticity are alleviated and whose discharge characteristics are improved and that has excellent initial characteristics. Phosphor of the present invention is an alkaline-earth metal aluminate phosphor containing an element M (where M denotes at least one type of element selected from the group consisting of Nb, Ta, W and B). In this phosphor, a concentration of M in the vicinity of a surface of the phosphor particles is higher than the average concentration of M in the phosphor particles as a whole. A plasma display device according to the present invention includes a plasma display panel in which a plurality of discharge cells in one color or in a plurality of colors are arranged and phosphor layers are arranged so as to correspond to the discharge cells in colors and in which light is emitted by exciting the phosphor layers with ultraviolet rays. The phosphor layers include blue phosphor, where the afore-mentioned phosphor is used as the blue phosphor.
摘要:
Phosphor and a plasma display device are provided whose deterioration in brightness of phosphors and a degree of change in chromaticity are alleviated and whose discharge characteristics are improved and that has excellent initial characteristics. Phosphor of the present invention is an alkaline-earth metal aluminate phosphor containing an element M (where M denotes at least one type of element selected from the group consisting of Nb, Ta, W and B). In this phosphor, a concentration of M in the vicinity of a surface of the phosphor particles is higher than the average concentration of M in the phosphor particles as a whole. A plasma display device according to the present invention includes a plasma display panel in which a plurality of discharge cells in one color or in a plurality of colors are arranged and phosphor layers are arranged so as to correspond to the discharge cells in colors and in which light is emitted by exciting the phosphor layers with ultraviolet rays. The phosphor layers include blue phosphor, where the afore-mentioned phosphor is used as the blue phosphor.
摘要:
The present invention is a light-emitting device which is provided with a phosphor layer containing a blue phosphor, wherein the phosphor layer includes an aluminate phosphor, as the blue phosphor, that contains Ba, Sr, Eu, Mg, Al and O as constituting elements at an atom-number ratio Ba:Sr:Eu:Mg:Al:O=p:q:r:1:w:17 wherein 0.70≦p≦0.95, 0≦q≦0.15, 0.05≦r≦0.20, p+q+r≧1, and 9.8≦w≦10.5 are satisfied, and a value of a linear coupling function s represented by a formula: s=−11622+2043.07La+199.24L1−116.91L2 is 1 or less, when a lattice constant is La(Å), an interatomic distance between Al(2) and O(5) is L1(Å), and an interatomic distance between Al(1) and O(4) is L2(Å), which are obtained by an X-ray crystal structure analysis assuming that the aluminate phosphor belongs to a space group P63/mmc.
摘要:
The present invention provides a phosphor that has high luminance, a property of low luminance degradation during PDP driving, and chromaticity y comparable to that of BAM:Eu. The present invention is the phosphor that is represented by the general formula xAO.y1EuO.y2EuO3/2.DO.zSiO2.wCaCl2 wherein A is at least one selected from Sr and Ba, D is at least one selected from Mg and Zn, and 2.970≦x≦3.500, 0.001≦y1+y2≦0.030, 1.900≦z≦2.100, and 0.001≦w≦0.100 are satisfied, and that has 50 mol % or less of the divalent Eu ratio (ratio of the divalent Eu element to the total of the Eu elements) in the vicinity of the surface of the phosphor particle.
摘要翻译:本发明提供了具有高亮度,PDP驱动时亮度劣化低的特性和与BAM:Eu相当的色度y的荧光体。 本发明是由通式xAO.y1EuO.y2EuO3 / 2.Do.zSiO2.wCaCl2表示的荧光体,其中A是选自Sr和Ba中的至少一种,D是选自Mg和Zn中的至少一种,以及 2.970 <= x <= 3.500,0.001 <= y1 + y2 <= 0.030,1.900 <= z <= 2.100,0.001 <= w <= 0.100,并且具有50mol%以下的二价Eu比例 (二价Eu元素相对于Eu元素的总和的比例)在荧光体颗粒的表面附近。
摘要:
The present invention is a blue phosphor that is represented by a general formula xSrO.yEuO.MgO.zSiO2, where 2.970≦x≦3.500, 0.006≦y≦0.030, and 1.900≦z≦2.100. This blue phosphor has a crystal structure that is essentially a merwinite structure, and the crystal structure has a unit cell volume of 714.8 Å3 or less. Or, in this blue phosphor, a peak appearing around 2θ=22.86 degrees in an X-ray diffraction pattern obtained by measurement of the blue phosphor using an X-ray with a wavelength of 0.773 Å has a one-fifth value width of 0.17 degrees or less. Furthermore, the present invention is a light-emitting device having a phosphor layer including the phosphor. A suitable example of the light-emitting device is a plasma display panel.
摘要:
The present invention provides a method of manufacturing a blue silicate phosphor having high luminance and a chromaticity y comparable to or lower than that of BAM:Eu. The present invention is a method of manufacturing a blue silicate phosphor represented by the general formula aAO.bEuO.(Mg1−w,Znw)O.cSiO2.dCaCl2, where A is at least one selected from Sr, Ba and Ca, and 2.970≦a≦3.500, 0.006≦b≦0.030, 1.900≦c≦2.100, 0≦d≦0.05, and 0≦w≦1 are satisfied. In this manufacturing method, heat treatment is carried out in a gas atmosphere having an oxygen partial pressure of 1×10−15.5 atm to 1×10−10 atm at a temperature of 1200° C. to 1400° C.
摘要:
The present invention is a blue phosphor that is represented by a general formula xSrO.yEuO.MgO.zSiO2, where 2.970≦x≦3.500, 0.006≦y≦0.030, and 1.900≦z≦2.100. This blue phosphor has a crystal structure that is essentially a merwinite structure, and the crystal structure has a unit cell volume of 714.8 Å3 or less. Or, in this blue phosphor, a peak appearing around 2θ=22.86 degrees in an X-ray diffraction pattern obtained by measurement of the blue phosphor using an X-ray with a wavelength of 0.773 Å has a one-fifth value width of 0.17 degrees or less. Furthermore, the present invention is a light-emitting device having a phosphor layer including the phosphor. A suitable example of the light-emitting device is a plasma display panel.
摘要翻译:本发明是由通式xSrO.yEuO.MgO.zSiO2表示的蓝色荧光体,其中2.970 <= x <= 3.500,0.006 <= y <= 0.030和1.900 <= z <= 2.100。 这种蓝色荧光体具有基本上为细锰矿结构的晶体结构,晶体结构的单位电池体积为714.83以下。 或者,在该蓝色荧光体中,通过使用波长为0.773的X射线测量蓝色荧光体而获得的X射线衍射图中的2θ= 22.86度附近出现的峰值的1/5值宽度为0.17度 或更少。 此外,本发明是具有包含荧光体的荧光体层的发光装置。 发光装置的合适示例是等离子体显示面板。
摘要:
The present invention provides a method of manufacturing a blue silicate phosphor having high luminance and a chromaticity y comparable to or lower than that of BAM:Eu. The present invention is a method of manufacturing a blue silicate phosphor represented by the general formula aAO.bEuO.(Mg1−w,Znw)O.cSiO2.dCaCl2, where A is at least one selected from Sr, Ba and Ca, and 2.970≦a≦3.500, 0.006≦b≦0.030, 1.900≦c≦2.100, 0≦d≦0.05, and 0≦w≦1 are satisfied. In this manufacturing method, heat treatment is carried out in a gas atmosphere having an oxygen partial pressure of 1×10−15.5 atm to 1×10−10 atm at a temperature of 1200° C. to 1400° C.
摘要翻译:本发明提供一种制造与BAM:Eu相当或更低的亮度和色度y的蓝色硅酸盐荧光体的方法。 本发明是制造由通式aAO.bEuO(Mg1-w,Znw)O.cSiO2.dCaCl2表示的蓝色硅酸盐荧光体的方法,其中A为选自Sr,Ba和Ca中的至少一种,2.970 <= a <= 3.500,0.006 <= b <= 0.030,1.900 <= c <= 2.100,0 <= d <= 0.05,0 <= w <= 1。 在该制造方法中,在1200〜1400℃的温度下,在氧分压为1×10-15.5atm〜1×10-10atm的气氛中进行热处理。