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公开(公告)号：JP2009149914A
公开(公告)日：2009-07-09
申请号：JP2009092837
申请日：2009-04-07
Applicant: Toshiba Corp , Toshiba Electronic Engineering Corp , 東芝電子エンジニアリング株式会社 , 株式会社東芝
Inventor： SUDO NOBUYUKI , TERAJIMA KENJI
Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a red light emitting phosphor practically usable for a light-emitting diode capable of efficiently absorbing ultraviolet rays at an excitation wavelength of about 370 nm and emitting red light at high efficiency and in order to take white light or arbitrary medium color light out of a single light-emitting diode.
SOLUTION: A process for manufacturing the red light emitting phosphor comprises compounding and mixing powders of materials to have a composition of europium-samarium doped lanthanum oxysulfide phosphor expressed by general formula: (La
1-x-y Eu
x Sm
y )
2 O
2 S (wherein 0.01≤x≤0.15, 0.0001≤y≤0.03), storing and firing the mixed powders of materials in a case for firing with a lid, washing a resultant fired stuff with pure water, crushing the fired stuff after washing by a ball mill, and washing crushed particles with acid solution having a pH of at least 2 and not more than 4, wherein 30 mol% or less of the above La is replaced by at least one element of Y and Gd.
COPYRIGHT: (C)2009,JPO&INPITAbstract translation: 解决问题的方案：提供一种实际上可用于发光二极管的红色发光荧光体的方法，该发光二极管能够有效地吸收大约370nm的激发波长处的紫外线并以高效率发射红光 从单个发光二极管中取出白光或任意中等颜色的光。 解决方案：制造红色发光荧光体的方法包括将材料的粉末混合并混合以具有由以下通式表示的铕 - 钐掺杂的氧化硫镧氧化物的组成：（La
1-xy S（其中0.01≤x≤0.15,0.0001≤y≤0.03）（其中，0.01≤x≤0.15，0.0001≤y≤0.03） ），在用盖子烧制的情况下储存和烧制材料的混合粉末，用纯水洗涤所得的烧成物，用球磨机洗涤后粉碎烧成的物质，并用酸溶液洗涤粉碎的颗粒，其pH值为 至少2个且不超过4个，其中30mol％或更少的上述La被至少一个Y和Gd元素代替。 版权所有（C）2009，JPO＆INPIT -
公开(公告)号：JP2006023775A
公开(公告)日：2006-01-26
申请号：JP2005254715
申请日：2005-09-02
Applicant: Toshiba Corp , Toshiba Electronic Engineering Corp , 東芝電子エンジニアリング株式会社 , 株式会社東芝
Inventor： SUDO NOBUYUKI , TERAJIMA KENJI
Abstract: PROBLEM TO BE SOLVED: To efficiently extract white light or various kinds of intermediate color light of a desired color temperature with high accuracy in a display device for a sign using UV rays as a light source.
SOLUTION: The display device for a sign is equipped with: a light emitting unit including a phosphor for a display device containing a blue light emitting phosphor, a green light emitting phosphor and a red light emitting phosphor; and a light source irradiating the light emitting unit with UV rays. The red light emitting phosphor is a lanthanum oxide sulfide phosphor activated with trivalent europium and samarium, which is substantially represented by (La
1-x-y Eu
x Sm
y )
2 O
2 S, wherein x and y satisfy 0.01≤x≤0.15 and 0.0001≤y≤0.03.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：在使用紫外线作为光源的符号显示装置中，高效地提取白光或具有期望色温的各种中间色度的光。 ＆lt; P＆gt;解决方案：符号显示装置配备有：包括用于显示装置的荧光体的发光单元，其包含蓝色发光荧光体，绿色发光荧光体和红色发光荧光体; 以及用紫外线照射发光单元的光源。 红色发光荧光体是用三价铕和钐激活的氧化镧硫化物荧光体，其基本上由（La
1-xy x Sm < / SB>）其中x和y满足0.01≤x≤0.15和0.0001≤y≤0.03。 版权所有（C）2006，JPO＆NCIPI -
公开(公告)号：JP2000183408A
公开(公告)日：2000-06-30
申请号：JP35764398
申请日：1998-12-16
Applicant: TOSHIBA ELECTRONIC ENG , TOSHIBA CORP
Inventor： SUDO NOBUYUKI , TERAJIMA KENJI , FURUKAWA CHISATO
IPC: C01B25/45 , C01F17/00 , C09K11/64 , C09K11/73 , H01L33/32 , H01L33/50 , H01L33/56 , H01L33/62 , H01L33/00
Abstract: PROBLEM TO BE SOLVED: To obtain white light for stabilizing chromaticity with simple constitution in a semiconductor light-emitting device, such as an LED lamp. SOLUTION: An LED chip 1 capable of emitting ultraviolet light is used. The chip 1 is fixed on a lead frame 2 and connected to the frame 2 by a bonding wire 4. A 1st phosphor layer 6a, containing a blue light-emitting phosphor for absorbing ultraviolet light and emitting blue light, is formed on the light emitting surface of the chip 1 and a 2nd phosphor layer 6b containing a yellow-orange light-emitting phosphor for absorbing blue light and emitting yellow-orange light is formed on the surface of the layer 6a.
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公开(公告)号：JPH11246857A
公开(公告)日：1999-09-14
申请号：JP4827598
申请日：1998-02-27
Applicant: TOSHIBA ELECTRONIC ENG , TOSHIBA CORP
Inventor： SUDO NOBUYUKI , TERAJIMA KENJI
Abstract: PROBLEM TO BE SOLVED: To provide a red light emitting phosphor capable of efficiently absorbing ultraviolet rays at the excitation wavelength 370 nm of a light emitting diode or thereabout to emit red light in high efficiency and practically usable in the light emitting diode to allow a single light emitting diode to emit white color light or arbitrary medium color light, its production process and an LED lamp produced by using the phosphor. SOLUTION: This phosphor is a europium.samarium-doped lanthanum oxysulfide phosphor expressed by the formula; (La1-x-y Eux Smy )2 O2 S (0.01
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公开(公告)号：JPH06287552A
公开(公告)日：1994-10-11
申请号：JP7415993
申请日：1993-03-31
Applicant: TOSHIBA LIGHTING & TECHNOLOGY , TOSHIBA CORP
Inventor： NAOKI SHOJI , TAMAYA MASAAKI , TERAJIMA KENJI
Abstract: PURPOSE:To obtain a mixed phosphor which has a high lumen maintenance factor and hardly causes the color difference between both ends of a bulb and to provide, the method for producing the mixed phosphor, and a fluorescent lamp. CONSTITUTION:A mixed phosphor is provided which comprises phosphors 1, 2, and 3 (Y2O3:Eu ) and in which particles of the phosphor 3 having the highest lumen maintenance factor have diameters smaller than particles of other phosphors 2 and 3 and are attached to the surfaces of particles of other phosphors 2 and 3. A fluorescent lamp is produced by using the mixed phosphor. Attaching Y2O3:Eu phosphor particles brings the charging tendency of a green or blue phosphor close to HgO, decreasing the amt. of a black substance adsorbed by the phosphor surface. A red phosphor, having a similar distribution to the green or blue phosphor in a bulb, can emit a homogeneously colored light.
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Patent Agency Ranking
公开(公告)号：JPH06128565A
公开(公告)日：1994-05-10
申请号：JP27592792
申请日：1992-10-14
Applicant: TOSHIBA CORP
Inventor： HAYASHI MIGIKO , TERAJIMA KENJI , YAMAKAWA MASAHIKO
Abstract: PURPOSE:To produce a substantially spherical phosphor having a stable particle diameter distribution with good reproducibility. CONSTITUTION:A process for producing a rare earth phosphate phosphor substantially represented by the general formula: (M1-x-yCexTby)PO4 (wherein M is at least one element selected from among La, Y and Gd, and x and y are numbers satisfying the formulas: x>0, y>0, and 0.1
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公开(公告)号：JPH05320638A
公开(公告)日：1993-12-03
申请号：JP12328592
申请日：1992-05-15
Applicant: TOSHIBA CORP , TOSHIBA ELECTRONIC ENG
Inventor： TAKEMURA HIROBUMI , SUDO NOBUYUKI , MOTOJIMA YOKO , TERAJIMA KENJI
Abstract: PURPOSE:To provide a blue to bluish green emitting phosphor which has a high luminous efficiency (high luminance) and high color rendering properties and suppressed in the aging of its luminance and to provide a high-luminance fluorescent lamp suppressed in the aging of its chromaticity. CONSTITUTION:This phosphor is blue to bluish green emitting one substantially represented by the general formula: (M, Eu)10(PO4)6X2-x (wherein M is at least one element selected from among Mg, Ca, Sr and Ba; X is at least one element selected from among F, Cl and Br; and 0
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公开(公告)号：JPH05194944A
公开(公告)日：1993-08-03
申请号：JP983992
申请日：1992-01-23
Applicant: TOSHIBA CORP
Inventor： YAMAKAWA MASAHIKO , TAKEMURA HIROBUMI , HAYASHI MIGIKO , TERAJIMA KENJI
Abstract: PURPOSE:To provide a blue-emitting stimulable phosphor which exhibits a high luminous intensity when excited by, e.g. a mercury line at 254nm and a high resistance to degradation in luminous intensity when a fluorescent lamp having a luminescent layer formed from the phosphor is on, and to provide the lamp restained or prevented from a change in color temperature. CONSTITUTION:A blue-emitting stimulable phosphor represented by the general formula: (M1-x-yEuxMny)O.aAl2O3.bGa2O3 (wherein M is at least one element selected from the group consisting of Mg, Ca, Sr, and Ba; 0.03
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公开(公告)号：JPH04270783A
公开(公告)日：1992-09-28
申请号：JP3117291
申请日：1991-02-27
Applicant: TOSHIBA CORP
Inventor： TAKEMURA HIROBUMI , HAYASHI MIGIKO , TERAJIMA KENJI , YAMAKAWA MASAHIKO , NAKADA YOSHIYUKI
Abstract: PURPOSE:To provide the title stimulable phosphor great in luminescent output when used in fluorescent lamps of a three-wavelengths luminescent type, also small in the change in the luminescent chromaticity with the elapse of lighting time, comprising a divalent Eu-activated blue luminescent halophosphate stimulable phosphor coated with a pyrophosphate. CONSTITUTION:The objective stimulable phosphor comprising a divalent Eu- activated blue luminescent stimulable phosphor of formula (Mb,Eu)10(PO4)6X2 (Mb is Mg, Ca, Sr or Ba; X is F, Cl or Br) coated with 0.01-5wt.% of a pyrophosphate of formula Ma2P2O7 (Ma is Mg, Ca, Sr or Ba).
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公开(公告)号：JPH03205480A
公开(公告)日：1991-09-06
申请号：JP1090
申请日：1990-01-04
Applicant: TOSHIBA CORP
Inventor： TERAJIMA KENJI , YAMAKAWA MASAHIKO , TAKEMURA HIROBUMI , HAYASHI MIGIKO , TOMURA TOMOHARU
Abstract: PURPOSE:To obtain a fluorescent lamp having high luminous output and undergoing little change in chromaticity (x, y) of emission during lighting of the lamp by forming a second phosphor layer containing a specified small amount of boron and made by using a specified composition activated with Eu or Eu and Mn. CONSTITUTION:A fluorescent lamp having a first phosphor layer 4 deposited on the inside of a glass bulb 1 and a second phosphor layer 5 formed thereon, wherein the second phosphor layer 5 contains art most 0.03% boron and is made by using at least one of a composition of formula I (wherein M is Zn, Mg, Ca, Sr, Ba, Li, Rb or Cs; a>0; b>0) activated with divalent Eu and a composition of formula II (wherein M, a, and b are the same as mentioned above) activated with divalent Eu and Mn. This technique can give a florescent lamp having high luminous output and suffering little decrease in luminous output and little change in chromaticity (x, y) of emission during lighting of the lamp.
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