JP2007088248A - Colored light emitting diode lamp, lighting apparatus for decoration, and color-display signing apparatus - Google Patents

Colored light emitting diode lamp, lighting apparatus for decoration, and color-display signing apparatus Download PDF

Info

Publication number
JP2007088248A
JP2007088248A JP2005275821A JP2005275821A JP2007088248A JP 2007088248 A JP2007088248 A JP 2007088248A JP 2005275821 A JP2005275821 A JP 2005275821A JP 2005275821 A JP2005275821 A JP 2005275821A JP 2007088248 A JP2007088248 A JP 2007088248A
Authority
JP
Japan
Prior art keywords
light
phosphor
blue
yellow
colored
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2005275821A
Other languages
Japanese (ja)
Inventor
Takeshi Sakuma
健 佐久間
Naoki Kimura
直樹 木村
Masakazu Ohashi
正和 大橋
Naoto Hirosaki
尚登 広崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikura Ltd
National Institute for Materials Science
Original Assignee
Fujikura Ltd
National Institute for Materials Science
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujikura Ltd, National Institute for Materials Science filed Critical Fujikura Ltd
Priority to JP2005275821A priority Critical patent/JP2007088248A/en
Publication of JP2007088248A publication Critical patent/JP2007088248A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • H01L2224/45001—Core members of the connector
    • H01L2224/45099—Material
    • H01L2224/451—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
    • H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
    • H01L2224/45144—Gold (Au) as principal constituent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481—Disposition
    • H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
    • H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item

Abstract

<P>PROBLEM TO BE SOLVED: To provide a colored LED lamp having an overflowing decorativeness and for emitting its light in an arbitrary chromaticity, and to provide apparatuses using the colored LED lamp as light sources. <P>SOLUTION: The colored light emitting diode lamp emits the colored lights obtained by combining a blue light emitting diode element with one or more kinds of phosphors selected from the group comprising an yellow-light emitting yellow phosphor, a red-light emitting red phosphor, and a green-light emitting green phosphor which are excited by the blue light. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、任意の色度で発光する装飾性あふれる有色発光ダイオードランプに関する。本発明の有色発光ダイオードランプは、有色光を照射する装飾用照明装置やネオンサインを代替する固定デザインのカラーディスプレイサイン装置などに用いることができる。   The present invention relates to a colored light-emitting diode lamp full of decoration that emits light at an arbitrary chromaticity. The colored light-emitting diode lamp of the present invention can be used in a decorative lighting device that irradiates colored light, a fixed-display color display sign device that substitutes for a neon sign, and the like.

発光ダイオードとその光で励起されて特有の色を発光する蛍光体とを組み合わせた構造、又はそのための蛍光体に関して、従来、例えば特許文献１〜８、非特許文献１〜１２に開示された技術が提案されている。
特許文献１〜３には、青色発光ダイオード素子と青色励起黄色発光酸化物蛍光体からなる白色発光ダイオードが開示されている。このタイプの白色発光ダイオードは、近年広く普及している。
特許文献４には、青色発光ダイオード素子と、青色励起緑色発光硫化物蛍光体・青色励起黄色発光硫化物蛍光体・青色励起赤色発光硫化物蛍光体とからなる白色発光ダイオードが開示されている。
特許文献５・非特許文献１・特許文献６には、青色発光ダイオード素子と、青色励起緑色発光酸化物蛍光体又は青色励起黄色発光酸化物蛍光体と、青色励起赤色発光窒化物蛍光体又は硫化物蛍光体とからなる白色発光ダイオードが開示されている。
特許文献７・非特許文献２〜５には、紫外又は青色励起黄色発光酸窒化物蛍光体が開示されている。
非特許文献６，７には、紫外又は青色励起赤色発光酸窒化物蛍光体が開示されている。
非特許文献８には、紫外又は青色励起緑色発光酸窒化物蛍光体が開示されている。
特許文献８・非特許文献９〜１１には、青色発光ダイオード素子と青色励起黄色発光酸窒化物蛍光体からなる白色発光ダイオードが開示されている。
非特許文献１２には、青色発光ダイオード素子と青色励起緑色発光酸窒化物蛍光体と青色励起黄色発光酸窒化物蛍光体と青色励起赤色発光窒化物蛍光体とからなる白色発光ダイオード素子が開示されている。
特許第２９００９２８号公報 特許第２９２７２７９号公報 特許第３３６４２２９号公報 特開平１０−１６３５３５号公報 特開２００３−２７３４０９号公報 特開２００３−３２１６７５号公報 特開２００２−３６３５５４号公報 特開２００３−１２４５２７号公報 R. Mueller-Mach, G. O. Mueller, M. R. Krames and T. Trottier, IEEE J. Selected Topics Quantum Electron., Vol.8, No.2, pp.339-345 (2002) R. J. Xie, M. Mitomo, K. Uheda, F. F. Xu and Y. Akimune, J. Am. Ceram. Soc., 85[5] 1229-34(2002) J. W. H. van Krevel, J. W. T. van Rutten, H. Mandal, H. T. Hintzen and R. Metselaar, J. Solid State Chem., 165, 19-24(2002) Joost Willem Hendrik van Krevel,“On new rare-earth doped M-Si-Al-O-N materials: Luminescence properties and oxidation resistance,” Technische Universiteit Eindhoven, 2000, ISBN 90-386-2711-4 R. J. Xie, N. Hirosaki, K. Sakuma, Y. Yamamoto, M. Mitomo,“Eu２＋-doped Ca-α-SiAlON: A yellow phosphor for white light-emitting diodes,” Appl. Phys. Lett., Vol.84, pp.5404-5406 (2004) K. Uheda, N. Hirosaki, H. Yamamoto, H. Yamane, Y. Yamamoto, W. Inami and K. Tsuda,“The Crystal Structure and Photoluminescence Properties of a New Red Phosphor, Calcium Aluminum Silicon Nitride doped with Divalent Europium,” Abstract 2073, The Electrochemical Society 206th Meeting, Honolulu, HI, Oct 3-8, 2004 上田、広崎、山元、解、“白色ＬＥＤ用赤色窒化物蛍光体,” 第３０５回蛍光体同学会講演会予稿集、ｐｐ．３７−４７ （２００４年１１月２６日） 広崎、解、木本、関口、山本、末廣、“緑色蛍光体（β-SiAlON:Eu２＋）の発光特性,” ２００５年春季第５２回応用物理学関係連合講演会講演予稿集、３０ａ−ＹＨ−７ （２００５．３ 埼玉大） K. Sakuma, K. Omichi, N. Kimura, M. Ohashi, D. Tanaka, N. Hirosaki, Y. Yamamoto, R. -J. Xie, T. Suehiro,“Warm-white light-emitting diode with yellowish orange SiAlON ceramic phosphor,” Opt. Lett., Vol.29, pp.2001-2003 (2004) 佐久間健、広崎尚登、木村直樹、大道浩児、山本吉信、解栄軍、末廣隆之、大橋正和、田中大一郎、“αサイアロン蛍光体高効率電球色発光ダイオードランプ,” 第６５回応用物理学会学術講演会講演予稿集、ｐ．１２８４，２ｐ−ＺＬ−１５ （２００４．９ 東北学院大） 木村直樹、広崎尚登、佐久間健、浅野健一郎、田中大一郎、“α-サイアロン蛍光体を用いた高効率電球色ＬＥＤ,” 電子情報通信学会２００５総合大会講演論文集、Ｃ−９−１ （２００５．３ 大阪大） 佐久間、広崎、木村、増子、山本、解、末廣、浅野、田中、“酸窒化物蛍光体高演色性白色発光ダイオードランプ,” ２００５年春季第５２回応用物理学関係連合講演会講演予稿集、３０ａ−ＹＨ−８ （２００５．３ 埼玉大） Conventionally, for example, a technique disclosed in Patent Documents 1 to 8 and Non-Patent Documents 1 to 12 regarding a structure in which a light emitting diode and a phosphor that is excited by the light and emits a specific color are combined, or a phosphor therefor. Has been proposed.
Patent Documents 1 to 3 disclose white light emitting diodes composed of a blue light emitting diode element and a blue excited yellow light emitting oxide phosphor. This type of white light emitting diode has become widespread in recent years.
Patent Document 4 discloses a white light emitting diode comprising a blue light emitting diode element and a blue excited green light emitting sulfide phosphor, a blue excited yellow light emitting sulfide phosphor, and a blue excited red light emitting sulfide phosphor.
Patent Document 5, Non-Patent Document 1, and Patent Document 6 include a blue light emitting diode element, a blue excited green light emitting oxide phosphor or a blue excited yellow light emitting oxide phosphor, and a blue excited red light emitting nitride phosphor or sulfide. A white light emitting diode comprising a phosphor is disclosed.
Patent Document 7 and Non-Patent Documents 2 to 5 disclose ultraviolet or blue excited yellow light emitting oxynitride phosphors.
Non-Patent Documents 6 and 7 disclose ultraviolet or blue excited red light emitting oxynitride phosphors.
Non-Patent Document 8 discloses an ultraviolet or blue excited green light emitting oxynitride phosphor.
Patent Document 8 and Non-Patent Documents 9 to 11 disclose a white light emitting diode composed of a blue light emitting diode element and a blue excited yellow light emitting oxynitride phosphor.
Non-Patent Document 12 discloses a white light emitting diode element comprising a blue light emitting diode element, a blue excited green light emitting oxynitride phosphor, a blue excited yellow light emitting oxynitride phosphor, and a blue excited red light emitting nitride phosphor. ing.
Japanese Patent No. 2900928 Japanese Patent No. 2927279 Japanese Patent No. 3364229 Japanese Patent Laid-Open No. 10-163535 JP 2003-273409 A JP 2003-321675 A JP 2002-363554 A JP 2003-124527 A R. Mueller-Mach, GO Mueller, MR Krames and T. Trottier, IEEE J. Selected Topics Quantum Electron., Vol.8, No.2, pp.339-345 (2002) RJ Xie, M. Mitomo, K. Uheda, FF Xu and Y. Akimune, J. Am. Ceram. Soc., 85 [5] 1229-34 (2002) JWH van Krevel, JWT van Rutten, H. Mandal, HT Hintzen and R. Metselaar, J. Solid State Chem., 165, 19-24 (2002) Joost Willem Hendrik van Krevel, “On new rare-earth doped M-Si-Al-ON materials: Luminescence properties and oxidation resistance,” Technische Universiteit Eindhoven, 2000, ISBN 90-386-2711-4 RJ Xie, N. Hirosaki, K. Sakuma, Y. Yamamoto, M. Mitomo, “Eu2 + -doped Ca-α-SiAlON: A yellow phosphor for white light-emitting diodes,” Appl. Phys. Lett., Vol.84 , pp.5404-5406 (2004) K. Uheda, N. Hirosaki, H. Yamamoto, H. Yamane, Y. Yamamoto, W. Inami and K. Tsuda, “The Crystal Structure and Photoluminescence Properties of a New Red Phosphor, Calcium Aluminum Silicon Nitride doped with Divalent Europium, ”Abstract 2073, The Electrochemical Society 206th Meeting, Honolulu, HI, Oct 3-8, 2004 Ueda, Hirosaki, Yamamoto, So, “Red nitride phosphor for white LED,” Proceedings of the 305th Phosphor Society Conference, pp. 37-47 (November 26, 2004) Hirosaki, So, Kimoto, Sekiguchi, Yamamoto, Suehiro, “Luminescent properties of green phosphor (β-SiAlON: Eu2 +),” 2005 Proceedings of the 52nd Joint Conference on Applied Physics, 30a-YH- 7 (2005.3 Saitama Univ.) K. Sakuma, K. Omichi, N. Kimura, M. Ohashi, D. Tanaka, N. Hirosaki, Y. Yamamoto, R. -J. Xie, T. Suehiro, “Warm-white light-emitting diode with yellowish orange SiAlON ceramic phosphor, ”Opt. Lett., Vol.29, pp.2001-2003 (2004) Ken Sakuma, Naoto Hirosaki, Naoki Kimura, Hironobu Daido, Yoshinobu Yamamoto, Kyoei, Takayuki Suehiro, Masakazu Ohashi, Daiichiro Tanaka, “α-Sialon phosphor high-efficiency light-emitting diode lamp,” 65th JSAP Lecture Proceedings, p. 1284,2p-ZL-15 (2004.49 Tohoku Gakuin Univ.) Naoki Kimura, Naoto Hirosaki, Ken Sakuma, Kenichiro Asano, Daiichiro Tanaka, “Highly efficient light bulb color LED using α-sialon phosphor,” Proceedings of the 2005 IEICE General Conference, C-9-1 (2005 .3 Osaka University) Sakuma, Hirosaki, Kimura, Masuko, Yamamoto, So, Suehiro, Asano, Tanaka, “Oxynitride Phosphor Highly Color Rendering White Light-Emitting Diode Lamp,” 2005 Proceedings of the 52nd Joint Conference on Applied Physics, 30a -YH-8 (2005.3 Saitama Univ.)

従来、青色・緑色・赤色の３色の発光ダイオード（以下、ＬＥＤと記す。）を用いて任意の色度で発光させる技術があるが、高コストである。画像表示用ディスプレイ装置など、動的に色度を変化させるものについては、この方式が用いられているが、固定色の発光で十分である各種用途には、より安価な青色ＬＥＤと蛍光体とを組み合わせたものが好適である。その代表的なものは特許文献１〜３に記載された、青色ＬＥＤ素子と青色励起黄色発光酸化物蛍光体からなる白色ＬＥＤであるが、これは表現可能な色度範囲が限定されており、一般照明用の白色照明に用いることは可能であるが、任意の色度で発光させることはできない。また、高温で発光強度が低下する酸化物蛍光体を用いており、光学特性の温度安定性に問題がある。   Conventionally, there is a technique for emitting light at an arbitrary chromaticity using light emitting diodes of three colors of blue, green, and red (hereinafter referred to as LEDs), but this is expensive. This method is used for devices that dynamically change chromaticity, such as display devices for image display, but for various applications where fixed-color light emission is sufficient, cheaper blue LEDs and phosphors A combination of these is preferred. A typical one is a white LED composed of a blue LED element and a blue excited yellow light-emitting oxide phosphor described in Patent Documents 1 to 3, but this has a limited chromaticity range that can be expressed, Although it can be used for white illumination for general illumination, it cannot emit light with an arbitrary chromaticity. In addition, an oxide phosphor whose emission intensity decreases at a high temperature is used, and there is a problem in temperature stability of optical characteristics.

特許文献４〜６，特許文献８及び非特許文献１に記載の技術によれば、青色ＬＥＤ素子に塗布する蛍光体量を調整することで、白色ＬＥＤだけでなく、有色のＬＥＤを実現可能であると考えられるが、その詳細は各文献中に十分には開示されていない。また、特許文献４に開示された赤色蛍光体は、カドミウム（Ｃｄ）元素を含んでいる。近年、環境汚染の懸念から、カドミウム及びカドミウム化合物を全廃し、カドミウムを含有しない物質で代替することが広く行われており、蛍光体においても同様の取り組みをすることが望ましいと考えられる。また、その他の各文献中に開示された蛍光体は、酸化物又は硫化物蛍光体であり、温度特性や長期信頼性に問題があるものであった。   According to the techniques described in Patent Documents 4 to 6, Patent Document 8 and Non-Patent Document 1, it is possible to realize not only white LEDs but also colored LEDs by adjusting the amount of phosphor applied to the blue LED element. There are thought to be, but the details are not fully disclosed in each document. The red phosphor disclosed in Patent Document 4 contains a cadmium (Cd) element. In recent years, due to concerns about environmental pollution, cadmium and cadmium compounds have been completely abolished and replaced with substances that do not contain cadmium. In addition, the phosphors disclosed in other documents are oxide or sulfide phosphors, and have problems in temperature characteristics and long-term reliability.

また、特許文献５に記載されている、Ｃａ１．９７Ｓｉ５Ｎ８：Ｅｕ０．０３を代表例とする赤色発光蛍光体は、カドミウム等の環境汚染の懸念のある元素を含まない点は好ましいものの、その発光強度についてはさらなる改善が望まれていた。 Further, the red light-emitting phosphor described in Patent Document 5 and having Ca 1.97 Si 5 N 8 : Eu 0.03 as a representative example does not contain an element that may cause environmental pollution such as cadmium. Although preferable, further improvement in the emission intensity has been desired.

前記のような様々な問題を解決するためには、酸窒化物蛍光体又は窒化物蛍光体を用いることが好ましい。しかし、その研究は近年まだ始まったばかりである。特許文献７，８・非特許文献２〜１２に各蛍光体又はこれを用いた白色ダイオードに関する技術内容が開示されているが、酸化物蛍光体又は硫化物蛍光体を用いることなく酸窒化物蛍光体及び窒化物蛍光体のみで有色のＬＥＤを構成した事例はこれまでに開示されていない。   In order to solve the various problems as described above, it is preferable to use an oxynitride phosphor or a nitride phosphor. However, that research has only just begun in recent years. Patent Documents 7 and 8 and Non-Patent Documents 2 to 12 disclose the technical content of each phosphor or a white diode using the phosphor, but oxynitride fluorescence without using an oxide phosphor or a sulfide phosphor. No case has heretofore been disclosed in which a colored LED is composed only of a body and a nitride phosphor.

また、青色光・緑色光・赤色光の組み合わせを用いた有色のＬＥＤランプは、その方式によらず、見かけ上の色度に相当する分光分布光量が少ない場合があるという問題があった。緑色光と赤色光のバランスによって、見かけ上黄色とした有色のＬＥＤランプは、実際には黄色領域の発光が少ないことから、有色照明装置を構成し、黄色の物体（例えば服）を照らした時に、くすんだ色合いになってしまうという問題があった。見かけ上の色度、又は発光主波長に近い波長成分の光量が十分な有色ＬＥＤランプが求められていた。   In addition, a colored LED lamp using a combination of blue light, green light, and red light has a problem that the spectral distribution light amount corresponding to the apparent chromaticity may be small regardless of the method. Colored LED lamps that appear yellow due to the balance between green light and red light actually have little light emission in the yellow region. Therefore, when a colored illumination device is constructed and a yellow object (for example, clothes) is illuminated, There was a problem that the color became dull. There has been a demand for a colored LED lamp having a sufficient apparent chromaticity or a light amount of a wavelength component close to the emission main wavelength.

本発明は、前記事情に鑑みてなされ、任意の色度で発光する装飾性あふれる有色ＬＥＤランプ、該有色ＬＥＤランプを光源として用いた装飾用照明装置及びカラーディスプレイサイン装置の提供を目的とする。   The present invention has been made in view of the above circumstances, and an object thereof is to provide a colored LED lamp which emits light with an arbitrary chromaticity and has a decorative property, a decorative lighting device using the colored LED lamp as a light source, and a color display sign device.

前記目的を達成するため、本発明は、青色ＬＥＤ素子と、青色光で励起され黄色光を発する黄色蛍光体とを有してなり、有色光を発することを特徴とする有色ＬＥＤランプを提供する。   In order to achieve the above object, the present invention provides a colored LED lamp comprising a blue LED element and a yellow phosphor that emits yellow light when excited with blue light, and emits colored light. .

また本発明は、青色ＬＥＤ素子と、青色光で励起され赤色光を発する赤色蛍光体とを有してなり、有色光を発することを特徴とする有色ＬＥＤランプを提供する。   The present invention also provides a colored LED lamp comprising a blue LED element and a red phosphor that emits red light when excited by blue light, and emits colored light.

また本発明は、青色ＬＥＤ素子と、青色光で励起され緑色光を発する緑色蛍光体とを有してなり、有色光を発することを特徴とする有色ＬＥＤランプを提供する。   The present invention also provides a colored LED lamp comprising a blue LED element and a green phosphor that emits green light when excited by blue light, and emits colored light.

また本発明は、青色ＬＥＤ素子と、青色光で励起され黄色光を発する黄色蛍光体と、青色光で励起され赤色光を発する赤色蛍光体とを有してなり、有色光を発することを特徴とする有色ＬＥＤランプを提供する。   The present invention also includes a blue LED element, a yellow phosphor that is excited by blue light and emits yellow light, and a red phosphor that is excited by blue light and emits red light, and emits colored light. A colored LED lamp is provided.

また本発明は、青色ＬＥＤ素子と、青色光で励起され黄色光を発する黄色蛍光体と、青色光で励起され緑色光を発する緑色蛍光体とを有してなり、有色光を発することを特徴とする有色ＬＥＤランプを提供する。   The present invention also includes a blue LED element, a yellow phosphor that emits yellow light when excited by blue light, and a green phosphor that emits green light when excited by blue light, and emits colored light. A colored LED lamp is provided.

また本発明は、青色ＬＥＤ素子と、青色光で励起され黄色光を発する黄色蛍光体と、青色光で励起され赤色光を発する赤色蛍光体と、青色光で励起され緑色光を発する緑色蛍光体とを有してなることを特徴とする有色ＬＥＤランプを提供する。   The present invention also provides a blue LED element, a yellow phosphor that emits yellow light when excited by blue light, a red phosphor that emits red light when excited by blue light, and a green phosphor that emits green light when excited by blue light. There is provided a colored LED lamp characterized by comprising:

本発明の有色ＬＥＤランプにおいて、前記蛍光体は、窒化物又は酸窒化物であることが好ましい。   In the colored LED lamp of the present invention, the phosphor is preferably a nitride or an oxynitride.

本発明の有色ＬＥＤランプにおいて、前記黄色蛍光体は、主相がアルファサイアロン蛍光体であることが好ましい。   In the colored LED lamp of the present invention, the yellow phosphor preferably has an alpha sialon phosphor as a main phase.

さらに前記アルファサイアロン蛍光体は、一般式ＣａｑＥｕｒ（Ｓｉ，Ａｌ）１２（Ｏ，Ｎ）１６で表され、アルファサイアロン結晶構造を有し、前記ｑが０．７５≦ｑ≦１．０の範囲であり、且つ前記ｒが０．０３≦ｒ≦０．０７の範囲である、カルシウムを固溶しユーロピウムで賦活したアルファサイアロン蛍光体であることが好ましい。 Further, the alpha sialon phosphor is represented by a general formula Ca q Eu r (Si, Al) 12 (O, N) 16 and has an alpha sialon crystal structure, where q is 0.75 ≦ q ≦ 1.0. It is preferable that the alpha sialon phosphor is a solid solution of calcium and activated with europium, wherein r is in the range of 0.03 ≦ r ≦ 0.07.

本発明の有色ＬＥＤランプにおいて、前記赤色蛍光体は、ユーロピウムで賦活したＣａＡｌＳｉＮ３であることが好ましい。 In the colored LED lamp of the present invention, the red phosphor is preferably CaAlSiN 3 activated with europium.

本発明の有色ＬＥＤランプにおいて、前記緑色蛍光体は、主相がベータサイアロン蛍光体であることが好ましい。   In the colored LED lamp of the present invention, the green phosphor preferably has a main phase of a beta sialon phosphor.

さらに前記ベータサイアロン蛍光体は、一般式Ｅｕｓ（Ｓｉ，Ａｌ）６−ｓ（Ｏ，Ｎ）６で表され、ベータサイアロン結晶構造を有し、前記ｓが０．０１１≦ｓ≦０．０１９の範囲である、ユーロピウムで賦活したベータサイアロン蛍光体であることが好ましい。 Further, the beta sialon phosphor is represented by a general formula Eu s (Si, Al) 6-s (O, N) 6 and has a beta sialon crystal structure, and the s is 0.011 ≦ s ≦ 0.019. The beta sialon phosphor activated with europium is preferable.

本発明の有色ＬＥＤランプにおいて、該ランプの発光色は、青、青紫、紫、赤紫、赤、青緑、緑、黄緑、黄、黄赤、うすい青、うすい青紫、うすい紫、紫みのピンク、ピンク、オレンジピンク、うすい青緑、うすい緑、うすい黄緑、うすい黄、うすい黄赤、青みの白、紫みの白、うすいピンク、緑みの白、青みの白、白のいずれかであり、かつ昼光色、昼白色、白色、温白色、電球色のいずれの光源色色度範囲にも属さないことが好ましい。   In the colored LED lamp of the present invention, the emission colors of the lamps are blue, bluish purple, purple, red purple, red, blue green, green, yellow green, yellow, yellow red, light blue, light blue purple, light purple, purple. Pink, Pink, Orange Pink, Light Blue Green, Light Green, Light Yellow Green, Light Yellow, Light Yellow Red, Blue White, Purple White, Light Pink, Green White, Blue White, White And it does not belong to any of the light source chromaticity ranges of daylight color, day white color, white color, warm white color, and light bulb color.

また本発明は、前述した本発明に係る有色ＬＥＤランプを光源に有することを特徴とする装飾用照明装置を提供する。   The present invention also provides a decorative illuminating device having the above-described colored LED lamp according to the present invention as a light source.

また本発明は、前述した本発明に係る有色ＬＥＤランプを光源に有することを特徴とするカラーディスプレイサイン装置を提供する。   The present invention also provides a color display sign device comprising the above-described colored LED lamp according to the present invention as a light source.

本発明によれば、白色以外の任意の色度で発光する装飾性あふれる有色の照明用ＬＥＤランプを提供することができる。
本発明の有色ＬＥＤランプは、長寿命であり、また環境負荷の高い物質を含まないディスプレイサインや有色の装飾照明装置として、従来のネオンサイン等を代替することができる。
また、本発明の有色ＬＥＤランプは、酸窒化物蛍光体又は窒化物蛍光体のみを用い、硫化物蛍光体や酸化物蛍光体を用いていないので、温度特性や長期信頼性に優れている。
また、本発明の有色ＬＥＤランプは、青色ＬＥＤ素子と蛍光体とからなるため、複数のＬＥＤ素子の混色光を利用するタイプのものよりも格段に安価に提供することができる。
また、本発明の有色ＬＥＤランプは、黄色光成分の多い中間色を発することができるため、青色光・緑色光・赤色光混合型の有色照明と比較して当該有色照明の色度に近い物体色のものを照らした時にその物体がくすんだ色とならずに良い色で視認可能となる。 According to the present invention, it is possible to provide a colored LED lamp for lighting that emits light with an arbitrary chromaticity other than white.
The colored LED lamp of the present invention has a long life and can replace a conventional neon sign or the like as a display sign or a colored decorative lighting device that does not contain a material having a high environmental load.
In addition, the colored LED lamp of the present invention uses only oxynitride phosphors or nitride phosphors, and does not use sulfide phosphors or oxide phosphors, and therefore has excellent temperature characteristics and long-term reliability.
Moreover, since the colored LED lamp of the present invention is composed of a blue LED element and a phosphor, it can be provided at a much lower price than a type using a mixed color light of a plurality of LED elements.
Further, since the colored LED lamp of the present invention can emit an intermediate color with a lot of yellow light components, the object color is close to the chromaticity of the colored illumination as compared with the colored illumination of the blue light / green light / red light mixed type. When the object is illuminated, the object becomes visible with a good color instead of a dull color.

本発明の有色ＬＥＤランプは、青色ＬＥＤ素子と、青色光で励起され黄色光を発する黄色蛍光体・青色光で励起され赤色光を発する赤色蛍光体・青色光で励起され緑色光を発する緑色蛍光体からなる群から選択される１種又は２種以上の蛍光体とを組み合わせ、有色光を発する構成になっている。本発明において、前記青色ＬＥＤランプと前記蛍光体との組み合わせは、次の（１）〜（６）のいずれかである。   The colored LED lamp of the present invention includes a blue LED element, a yellow phosphor that emits yellow light when excited by blue light, a red phosphor that emits red light when excited by blue light, and a green fluorescent light that emits green light when excited by blue light. One or two or more phosphors selected from the group consisting of bodies are combined to emit colored light. In the present invention, the combination of the blue LED lamp and the phosphor is any of the following (1) to (6).

（１）青色ＬＥＤランプと黄色蛍光体との組み合わせ。
（２）青色ＬＥＤランプと赤色蛍光体との組み合わせ。
（３）青色ＬＥＤランプと緑色蛍光体との組み合わせ。
（４）青色ＬＥＤランプと黄色蛍光体と赤色蛍光体との組み合わせ。
（５）青色ＬＥＤランプと黄色蛍光体と緑色蛍光体との組み合わせ。
（６）青色ＬＥＤランプと黄色蛍光体と赤色蛍光体と緑色蛍光体との組み合わせ。 (1) A combination of a blue LED lamp and a yellow phosphor.
(2) A combination of a blue LED lamp and a red phosphor.
(3) A combination of a blue LED lamp and a green phosphor.
(4) A combination of a blue LED lamp, a yellow phosphor and a red phosphor.
(5) A combination of a blue LED lamp, a yellow phosphor and a green phosphor.
(6) A combination of a blue LED lamp, a yellow phosphor, a red phosphor and a green phosphor.

本発明の有色ＬＥＤランプは、青色ＬＥＤ素子から発せられる青色光の少なくとも一部を前記蛍光体に当てて励起させ、蛍光体から発せられる特有の色の光と前記青色光との混合光をランプ外に照射することができればよく、ランプの構造に関しては特に限定されない。本発明の有色ＬＥＤランプの好ましい構造としては、例えば、図１に示すような砲弾型ＬＥＤランプ１や図２に示すチップ型ＬＥＤランプ１１が挙げられる。   The colored LED lamp of the present invention applies at least a part of blue light emitted from a blue LED element to the phosphor to excite the phosphor, and mixes light of a specific color emitted from the phosphor with the blue light. The structure of the lamp is not particularly limited as long as it can be irradiated outside. As a preferable structure of the colored LED lamp of the present invention, for example, a bullet-type LED lamp 1 as shown in FIG. 1 and a chip-type LED lamp 11 as shown in FIG.

また、本発明の有色ＬＥＤランプに用いる黄色蛍光体、赤色蛍光体及び緑色蛍光体は、窒化物蛍光体又は酸窒化物蛍光体であることが望ましい。窒化物蛍光体又は酸窒化物蛍光体は、環境負荷の高い物質を含まず、また従来の硫化物蛍光体や酸化物蛍光体と比べ、温度特性や長期信頼性に優れている。   Moreover, it is desirable that the yellow phosphor, red phosphor and green phosphor used in the colored LED lamp of the present invention are nitride phosphors or oxynitride phosphors. Nitride phosphors or oxynitride phosphors do not contain substances with a high environmental load, and are superior in temperature characteristics and long-term reliability compared to conventional sulfide phosphors and oxide phosphors.

以下、本発明の有色ＬＥＤランプの構造、使用する青色ＬＥＤ素子、使用する蛍光体を例示すると共に、本発明の有色ＬＥＤランプの実例を説明する。   Hereinafter, while illustrating the structure of the colored LED lamp of the present invention, the blue LED element to be used, and the phosphor to be used, an example of the colored LED lamp of the present invention will be described.

＜砲弾型ＬＥＤランプ＞
図１に、本発明の有色ＬＥＤランプの構造の第１の例を示す。
この砲弾型ＬＥＤランプ１は、２本のリードワイヤ２，３を有し、その内の一方のリードワイヤ２には凹部が形成されており、その凹部に青色ＬＥＤ素子４が載置されている。また凹部には、青色ＬＥＤ素子４から発せられた光を前方に取り出すための斜面が設けられている。この斜面の傾斜角度は、光の反射方向を考慮して設計されている。 <Cannonball type LED lamp>
FIG. 1 shows a first example of the structure of the colored LED lamp of the present invention.
This bullet-type LED lamp 1 has two lead wires 2 and 3, and one of the lead wires 2 has a recess, and the blue LED element 4 is placed in the recess. . Further, the concave portion is provided with a slope for taking out light emitted from the blue LED element 4 forward. The inclination angle of the slope is designed in consideration of the light reflection direction.

この青色ＬＥＤ素子４の下部電極と凹部の底面とは、導電性ペーストにより電気的に接続されている。また青色ＬＥＤ素子４の上部電極は、金細線５によりリードワイヤ３に電気的に接続されている。そして、この青色ＬＥＤ素子４の全体を被覆するように、予め蛍光体７が分散された透明な蛍光体分散樹脂６が凹部に充填されている。   The lower electrode of the blue LED element 4 and the bottom surface of the recess are electrically connected by a conductive paste. The upper electrode of the blue LED element 4 is electrically connected to the lead wire 3 by a gold thin wire 5. The concave portion is filled with a transparent phosphor-dispersed resin 6 in which the phosphor 7 is dispersed in advance so as to cover the entire blue LED element 4.

この凹部を含むリードワイヤ２，３の先端部、青色ＬＥＤ素子４，蛍光体７を分散した蛍光体分散樹脂６は、透明な樹脂８により封止されている。この透明な樹脂８は、全体がほぼ円柱形状を有しており、その先端部はレンズ形状の曲面を有している。このようなＬＥＤランプは、その形状から通常「砲弾型」と呼ばれている。   The distal end portion of the lead wires 2 and 3 including the concave portion, the blue LED element 4 and the phosphor dispersed resin 6 in which the phosphor 7 is dispersed are sealed with a transparent resin 8. The transparent resin 8 as a whole has a substantially cylindrical shape, and its tip has a lens-shaped curved surface. Such an LED lamp is usually called a “bullet type” because of its shape.

＜チップ型ＬＥＤランプ＞
図２に、本発明のＬＥＤランプの構造の第２例を示す。
このチップ型ＬＥＤランプ１１は、白色樹脂製のパッケージ１９が２本のリードワイヤ１２，１３を挟み込んだ構造となっており、その中央部に凹部がある。凹部には、青色ＬＥＤ素子１４から発せされた光を前方に取り出すための斜面が設けられている。この斜面の傾斜角度は、光の反射方向を考慮して設計されている。 <Chip type LED lamp>
FIG. 2 shows a second example of the structure of the LED lamp of the present invention.
This chip-type LED lamp 11 has a structure in which a white resin package 19 sandwiches two lead wires 12 and 13 and has a recess at the center. The concave portion is provided with a slope for taking out the light emitted from the blue LED element 14 forward. The inclination angle of the slope is designed in consideration of the light reflection direction.

凹部にはリードワイヤ１２，１３の端部が露出しており、その片方には青色ＬＥＤ素子１４が載置されている。青色ＬＥＤ素子１４の下部電極とリードワイヤ１２端部とは、導電性ペーストによって電気的に接続されている。また、青色ＬＥＤ素子１４の上部電極とリードワイヤ１３の端部とは、金細線であるボンディングワイヤ１５によって電気的に接続されている。   The ends of the lead wires 12 and 13 are exposed in the recess, and the blue LED element 14 is placed on one of the ends. The lower electrode of the blue LED element 14 and the end of the lead wire 12 are electrically connected by a conductive paste. The upper electrode of the blue LED element 14 and the end of the lead wire 13 are electrically connected by a bonding wire 15 that is a gold thin wire.

そしてこの青色ＬＥＤ素子１４の全体を包囲するように、予め蛍光体１７が分散された透明な蛍光体分散樹脂１６が凹部に充填されている。このようなＬＥＤランプは、「表面実装型」又は「チップ型」と呼ばれている。   The concave portion is filled with a transparent phosphor-dispersed resin 16 in which the phosphor 17 is dispersed in advance so as to surround the entire blue LED element 14. Such LED lamps are called “surface mount type” or “chip type”.

＜青色ＬＥＤ素子＞
図１の青色ＬＥＤ素子４、及び図２の青色ＬＥＤ素子１４には、市販のＩｎＧａＮ系青色ＬＥＤ素子を用いた。発光中心波長４００ｎｍ〜４８０ｎｍのものが好適であり、なかでも本発明において用いた黄色蛍光体と赤色蛍光体とを高効率に励起できる発光中心波長４５０ｎｍのものが望ましい。ここでは、ＳｉＣ基板を用い上部基板と下部基板とを有するＬＥＤ素子を使用したが、これに限らずサファイア基板を用いた上部電極を２つ有し下部電極を有しないタイプのＬＥＤ素子を用いてもよい。この場合は、ボンディングワイヤがそれぞれ２本必要となり、また青色ＬＥＤ素子４，１４をそれぞれリードワイヤ２，１２に固定する樹脂は電気伝導性を有しないものであっても良いことになる。また、下部電極を２個有し上部電極の無いフリップチップ型のものを用いてもよい。 <Blue LED element>
As the blue LED element 4 in FIG. 1 and the blue LED element 14 in FIG. 2, commercially available InGaN-based blue LED elements were used. Those having an emission center wavelength of 400 nm to 480 nm are preferred, and in particular, those having an emission center wavelength of 450 nm capable of exciting the yellow phosphor and the red phosphor used in the present invention with high efficiency are desirable. Here, an LED element using an SiC substrate and having an upper substrate and a lower substrate is used. However, the present invention is not limited to this, and an LED element having two upper electrodes using a sapphire substrate and having no lower electrode is used. Also good. In this case, two bonding wires are required, and the resin for fixing the blue LED elements 4 and 14 to the lead wires 2 and 12 may not have electrical conductivity. Alternatively, a flip chip type having two lower electrodes and no upper electrode may be used.

＜黄色酸窒化物蛍光体＞
第１の蛍光体である黄色蛍光体には、青色で励起可能であり、緑色蛍光体よりも発光波長が長く、黄緑色・黄色・黄赤色のいずれかで発光するユーロピウム元素で賦活したカルシウムアルファサイアロン蛍光体を用いた。その合成について説明する。該アルファサイアロン蛍光体は、２価のユーロピウム（Ｅｕ）で賦活されたカルシウム（Ｃａ）固溶アルファサイアロン蛍光体であり、その組成は一般式Ｃａｑ（Ｓｉ，Ａｌ）１２（Ｏ，Ｎ）１６：Ｅｕ２＋ ｒで示される。本発明者らは、ｑ及びｒの値を種々変更して多数の試料を合成し、その発光特性を比較した結果、その組成範囲が０．７５≦ｑ≦１．０かつ０．０３≦ｒ≦０．０７の範囲において発光強度が特に強く、またその発光色度が白色ＬＥＤランプ用途に適していることを知見した。ここでは、一例として、ｑ＝０．８７５、ｒ＝０．０７を選択した。その合成を説明する。 <Yellow oxynitride phosphor>
The yellow phosphor, which is the first phosphor, is calcium alpha activated by a europium element that can be excited in blue, has a longer emission wavelength than the green phosphor, and emits in yellow-green, yellow, or yellow-red. A sialon phosphor was used. The synthesis will be described. The alpha sialon phosphor is a calcium (Ca) solid solution alpha sialon phosphor activated with divalent europium (Eu), and its composition is represented by the general formula Ca q (Si, Al) 12 (O, N) 16. : Represented by Eu 2+ r The inventors of the present invention synthesized a large number of samples with various values of q and r, and compared their emission characteristics. As a result, the composition range was 0.75 ≦ q ≦ 1.0 and 0.03 ≦ r. It has been found that the emission intensity is particularly strong in the range of ≦ 0.07 and the emission chromaticity is suitable for white LED lamp applications. Here, as an example, q = 0.875 and r = 0.07 were selected. The synthesis will be described.

原料粉末は、窒化ケイ素粉末、窒化アルミニウム粉末、炭酸カルシウム粉末、酸化ユーロピウム粉末を用いた。
組成式Ｃａ０．８７５Ｓｉ９．０６Ａｌ２．９４Ｏ０．９８Ｎ１５．０２：Ｅｕ２＋ ０．０７で示される組成が得られるように、窒化ケイ素粉末６５．７８質量％、窒化アルミニウム粉末１８．７１質量％、炭酸カルシウム粉末１３．５９質量％、酸化ユーロピウム粉末１．９１質量％をそれぞれ秤量し、１バッチ５０ｇとして、ｎ−ヘキサンを添加し、湿式遊星ボールミルで２時間混合した。 As the raw material powder, silicon nitride powder, aluminum nitride powder, calcium carbonate powder, and europium oxide powder were used.
Silicon nitride powder 65.78 mass%, aluminum nitride powder so that the composition shown by composition formula Ca 0.875 Si 9.06 Al 2.94 O 0.98 N 15.02 : Eu 2+ 0.07 can be obtained. 18.71% by mass, calcium carbonate powder 13.59% by mass, and europium oxide powder 1.91% by mass were weighed, and 50 g per batch was added with n-hexane and mixed for 2 hours in a wet planetary ball mill.

次に、混合された原料粉末をロータリーエバポレータにより乾燥させ、これを乳鉢を用いて十分にほぐし、ＪＩＳ Ｚ８８０１に準拠した公称目開き１２５μｍのステンレス鋼製の試験用網ふるいを用いて適切な粒径に造粒し、窒化ホウ素製のふた付き容器に収容した。
次に、前記のふた付き容器ごと原料粉末をガス加圧焼結炉に収め、焼結温度１７００℃、窒素雰囲気０．５ＭＰａでガス加圧して、２４時間焼結した。焼結後の粉末は一つの塊のようになっているが、わずかな力を加えてこれを粉末状にくずし、蛍光体粉末とした。
得られた蛍光体に対し、ＣｕのＫα線を用いた粉末Ｘ線回折測定を行ったところ、得られたチャートからカルシウム固溶アルファサイアロン結晶相であることが確認された。 Next, the mixed raw material powder is dried by a rotary evaporator, which is sufficiently loosened using a mortar, and an appropriate particle size is obtained using a stainless steel test mesh sieve having a nominal opening of 125 μm in accordance with JIS Z8801. And then accommodated in a boron nitride lidded container.
Next, the raw material powder together with the above-mentioned container with the lid was placed in a gas pressure sintering furnace, gas pressure was applied at a sintering temperature of 1700 ° C. and a nitrogen atmosphere of 0.5 MPa, and sintering was performed for 24 hours. The sintered powder looks like one lump, but a slight force was applied to break it up into a powder to obtain a phosphor powder.
When the obtained phosphor was subjected to powder X-ray diffraction measurement using Cu Kα ray, it was confirmed from the obtained chart that it was a calcium solid solution alpha sialon crystal phase.

＜赤色窒化物蛍光体＞
第２の蛍光体である赤色蛍光体には、青色で励起可能であり、前記黄色蛍光体よりも発光波長が長く、黄赤色・赤色のいずれかで発光する一般式（Ｃａ，Ｅｕ）ＡｌＳｉＮ３で表される窒化物結晶赤色蛍光体を用いた。その合成について説明する。 <Red nitride phosphor>
The red phosphor, which is the second phosphor, can be excited in blue, has a longer emission wavelength than the yellow phosphor, and has a general formula (Ca, Eu) AlSiN 3 that emits light in either yellow red or red. A nitride crystal red phosphor represented by the formula: The synthesis will be described.

原料粉末は、窒化ケイ素粉末、窒化アルミニウム粉末、窒化カルシウム粉末、金属ユーロピウムをアンモニア中で窒化して合成した窒化ユーロピウムを用いた。
組成式Ｅｕ０．０００５Ｃａ０．９９９５ＡｌＳｉＮ３で示される組成が得られるように、窒化ケイ素粉末３４．０７３５質量％、窒化アルミニウム粉末２９．８７０５質量％、窒化カルシウム粉末３５．９９５６質量％、窒化ユーロピウム粉末０．０６０４８質量％をそれぞれ秤量し、メノウ乳鉢と乳棒で３０分間混合を行い、得られた混合物を、金型を用いて２０ＭＰａの圧力を加えて成形し、直径１２ｍｍ、厚さ５ｍｍの成形体とした。なお、粉末の秤量、混合、成形の各工程は全て、水分１ｐｐｍ以下、酸素１ｐｐｍ以下の窒素雰囲気を保持することができるグローブボックス中で操作を行った。 As the raw material powder, silicon nitride powder, aluminum nitride powder, calcium nitride powder, and europium nitride synthesized by nitriding metal europium in ammonia were used.
In order to obtain a composition represented by the composition formula Eu 0.0005 Ca 0.9995 AlSiN 3 , silicon nitride powder 34.0735 mass%, aluminum nitride powder 29.8705 mass%, calcium nitride powder 35.9756 mass%, nitriding Europium powder 0.06048% by weight was weighed and mixed for 30 minutes with an agate mortar and pestle, and the resulting mixture was molded by applying a pressure of 20 MPa using a mold, having a diameter of 12 mm and a thickness of 5 mm. A molded body was obtained. The powder weighing, mixing and molding steps were all performed in a glove box capable of maintaining a nitrogen atmosphere with a moisture content of 1 ppm or less and oxygen of 1 ppm or less.

この成形体は窒化ホウ素製のるつぼに入れて黒鉛抵抗加熱方式の電気炉にセットした。焼成の操作は、まず、拡散ポンプにより焼成雰囲気を真空とし、室温から８００℃まで毎時５００℃の速度で加熱し、８００℃で純度が９９．９９９体積％の窒素を導入して圧力を１ＭＰａとし、毎時５００℃で１８００℃まで昇温し、１８００℃で２時間保持して行った。
焼成後、得られた焼結体をメノウの乳棒と乳鉢を用いて粉末に粉砕し、ＣｕのＫα線を用いた粉末Ｘ線回折測定を行ったところ、得られたチャートから、ＣａＡｌＳｉＮ３結晶相であることが確認された。 This compact was placed in a boron nitride crucible and set in a graphite resistance heating type electric furnace. First, the firing atmosphere is evacuated by a diffusion pump, heated from room temperature to 800 ° C. at a rate of 500 ° C. per hour, introduced nitrogen having a purity of 99.999% by volume at 800 ° C. and a pressure of 1 MPa. The temperature was raised to 1800 ° C. at 500 ° C. per hour and held at 1800 ° C. for 2 hours.
After firing, the obtained sintered body was pulverized into powder using an agate pestle and mortar and subjected to powder X-ray diffraction measurement using Cu Kα ray. From the obtained chart, the CaAlSiN 3 crystalline phase was obtained. It was confirmed that.

＜緑色酸窒化物蛍光体＞
第３の蛍光体である緑色蛍光体には、青色で励起可能であり、緑色光・黄緑色光のいずれかで発光する、ユーロピウム元素で賦活したベータサイアロン蛍光体を用いた。その合成に付いて説明する。
通常、ベータサイアロンとは、一般式Ｓｉ６−ｚＡｌｚＯｚＮ８−ｚで表されるものを言うが、本発明においては、その組成が一般式Ｅｕｓ（Ｓｉ，Ａｌ）６−ｓ（Ｏ，Ｎ）８で表され、ベータ型Ｓｉ３Ｎ４又はベータ型サイアロンと同等の結晶構造を有する窒化物蛍光体又は酸窒化物蛍光体をベータサイアロン蛍光体と称することとする。
本発明者らは、原料粉末に占めるＳｉ３Ｎ４，ＡｌＮ、Ｅｕ２Ｏ３の割合をそれぞれ変更して多数の試料を合成しその発光特性を比較した結果、Ｓｉ３Ｎ４が８９ｍｏｌ％、ＡｌＮが１０．７ｍｏｌ％、Ｅｕ２Ｏ３が０．３ｍｏｌ％の比率において特に良好な発光強度が得られることを知見した。実験結果より、Ｅｕ２Ｏ３が０．３ｍｏｌ％である試料が最も発光強度が大きく、Ｅｕ２Ｏ３がおよそ０．２５〜０．４５ｍｏｌ％の範囲で良好な特性が得られると判断できた。これは、一般式Ｅｕｓ（Ｓｉ，Ａｌ）６−ｓ（Ｏ，Ｎ）８において、０．０１１≦ｓ≦０．０１９の範囲において良好な特性が得られ、ｓ＝０．０１３において特に良好な結果が得られたことに相当する。 <Green oxynitride phosphor>
As the third phosphor, a green phosphor, a beta sialon phosphor activated with a europium element that can be excited in blue and emits light with either green light or yellow-green light was used. The synthesis will be described.
Usually, the beta-SiAlON represented by the general formula Si 6-z Al z O z N 8-z refers to those represented by, but in the present invention, its composition formula Eu s (Si, Al) 6 -s A nitride phosphor or oxynitride phosphor represented by (O, N) 8 and having a crystal structure equivalent to that of beta-type Si 3 N 4 or beta-type sialon is referred to as a beta-sialon phosphor.
The inventors of the present invention changed the ratio of Si 3 N 4 , AlN, and Eu 2 O 3 in the raw material powder, synthesized a number of samples, and compared the light emission characteristics. As a result, Si 3 N 4 was 89 mol%, It has been found that particularly good emission intensity can be obtained at a ratio of 10.7 mol% AlN and 0.3 mol% Eu 2 O 3 . The experimental results are Eu 2 O 3 large sample most luminous intensity is 0.3 mol%, was determined to Eu 2 O 3, and good properties in a range approximately of 0.25～0.45Mol% is obtained . This is because, in the general formula Eu s (Si, Al) 6-s (O, N) 8 , good characteristics are obtained in the range of 0.011 ≦ s ≦ 0.019, and particularly good in s = 0.013. This is equivalent to obtaining a satisfactory result.

本実施例では、前記組成Ｓｉ３Ｎ４が８９ｍｏｌ％、ＡｌＮが１０．７ｍｏｌ％、Ｅｕ２Ｏ３が０．３ｍｏｌ％の比率を採用した。原料粉末は、窒化ケイ素粉末、窒化アルミニウム粉末、酸化ユーロピウム粉末を用いた。前記組成が得られるように、窒化ケイ素粉末９５．８２質量％、窒化アルミニウム粉末３．３７質量％、酸化ユーロピウム粉末０．８１質量％をそれぞれ秤量し、１バッチ５０ｇとして、ｎ−ヘキサンを添加し、湿式遊星ボールミルで２時間混合した。次に、混合された原料粉末をロータリーエバポレータにより乾燥させ、これを乳鉢を用いて十分にほぐし、ＪＩＳ Ｚ ８８０１に準拠した公称目開き１２５μｍのステンレス鋼製の試験用網ふるいを用いて適切な粒径に造粒し、窒化ホウ素製のふた付き容器に収容した。
次に、前記のふた付き容器ごと原料粉末をガス加圧焼結炉に収め、焼結温度２０００℃、窒素雰囲気１ＭＰａでガス加圧して、２時間焼結し、そのまま引き続いて、焼結温度１７００℃、窒素雰囲気０．５ＭＰａでガス加圧し、さらに２４時間焼結した。焼結後の粉末は一つの塊のようになっているが、わずかな力を加えてこれを粉末状にくずし、蛍光体粉末とした。
得られた蛍光体に対し、ＣｕのＫα線を用いた粉末Ｘ線回折測定を行ったところ、得られたチャートからベータサイアロン結晶相であることが確認された。 In this example, a ratio of 89 mol% for the composition Si 3 N 4 , 10.7 mol% for AlN, and 0.3 mol% for Eu 2 O 3 was adopted. As the raw material powder, silicon nitride powder, aluminum nitride powder, and europium oxide powder were used. In order to obtain the above composition, 95.82% by mass of silicon nitride powder, 3.37% by mass of aluminum nitride powder, and 0.81% by mass of europium oxide powder were weighed and n-hexane was added in a batch of 50 g. And mixed for 2 hours in a wet planetary ball mill. Next, the mixed raw material powder is dried by a rotary evaporator, and this is sufficiently loosened using a mortar, and an appropriate particle is obtained using a test mesh sieve made of stainless steel having a nominal opening of 125 μm in accordance with JIS Z8801. Granulated to a diameter and housed in a boron nitride lidded container.
Next, the raw material powder together with the container with the lid is placed in a gas pressure sintering furnace, gas pressure is applied at a sintering temperature of 2000 ° C. and a nitrogen atmosphere of 1 MPa, sintering is performed for 2 hours, and then the sintering temperature is 1700. Gas pressurization was performed at 0 ° C. and a nitrogen atmosphere of 0.5 MPa, followed by sintering for 24 hours. The sintered powder looks like one lump, but a slight force was applied to break it up into a powder to obtain a phosphor powder.
When the obtained phosphor was subjected to powder X-ray diffraction measurement using Cu Kα radiation, it was confirmed from the obtained chart to be in a beta sialon crystal phase.

＜有色ＬＥＤ＞
本発明は有色のＬＥＤランプを提案しているが、ここで有色ＬＥＤランプとは、白色でない光を発するＥＤランプと定義することができる。白色の範囲については様々な定義が可能であるが、ここでは、図４に示した昼光色・昼白色・白色・温白色・電球色の色度範囲で発光するＬＥＤランプを白色ＬＥＤランプとする。その色度範囲は、ＪＩＳ Ｚ９１１２−１９９０「蛍光ランプの光源色及び演色性による区分」に記載されている。昼光色は、ＣＩＥ１９３１のＸＹＺ表色系色度図上で、座標（ｘ，ｙ）が（０．３２７４，０．３６７３）、（０．３２８２，０．３２９７）、（０．２９９８，０．３３９６）、（０．３０６４，０．３０９１）である４点を結ぶ四辺形によって表される範囲である。同様に、昼白色は（０．３６１６，０．３８７５）、（０．３５５２，０．３４７６）、（０．３３５３，０．３６５９）、（０．３３４５，０．３３１４）である４点、白色は（０．３９３８，０．４０９７）、（０．３８０５，０．３６４２）、（０．３６５６，０．３９０５）、（０．３５８４，０．３４９９）である４点、温白色は（０．４３４１，０．４２３３）、（０．４１７１，０．３８４６）、（０．４０２１，０．４０７６）、（０．３９０３，０．３７１９）である４点、電球色は（０．４７７５，０．４２８３）、（０．４５９４，０．３９７１）、（０．４３４８，０．４１８５）、（０．４２１４，０．３８８７）である４点をそれぞれ結ぶ四辺形によって表される範囲である。 <Colored LED>
The present invention proposes a colored LED lamp, where the colored LED lamp can be defined as an ED lamp that emits non-white light. Various definitions are possible for the white range. Here, the LED lamp that emits light in the chromaticity range of daylight color / day white / white / warm white / bulb color shown in FIG. 4 is a white LED lamp. The chromaticity range is described in JIS Z9112-1990 "Division by fluorescent lamp light source color and color rendering properties". The daylight color has coordinates (x, y) of (0.3274, 0.3673), (0.3282, 0.3297), (0.2998, 0.3396) on the XYZ color system chromaticity diagram of CIE1931. ), (0.3064, 0.3091) is a range represented by a quadrilateral connecting four points. Similarly, the neutral white is (0.3616, 0.3875), (0.3552, 0.3476), (0.3353, 0.3659), (0.3345, 0.3314), 4 points, White is (0.3938, 0.4097), (0.3805, 0.3642), (0.3656, 0.3905), (0.3584, 0.3499), warm white is ( 0.4341, 0.4233), (0.4171, 0.3846), (0.4021, 0.4076), (0.3903, 0.3719), the light bulb color is (0.4775) , 0.4283), (0.4594, 0.3971), (0.4348, 0.4185), and (0.4214, 0.3887) in a range represented by a quadrilateral that connects the four points, respectively. is there.

また、他の例としては、図４に示した黒体輻射軌跡に対して一定の距離を定め、黒体輻射軌跡の近傍を白色と定義する、又は図３に示したＪＩＳ Ｚ ８１１０参考付図１の系統色名の一般的な色度区分において白とされている範囲、又は白・紫みの白・青みの白・緑みの白、黄み能代とされている範囲を白色と定義する、といった定義を採用してもよい。   As another example, a fixed distance is defined with respect to the black body radiation locus shown in FIG. 4, and the vicinity of the black body radiation locus is defined as white, or JIS Z 8110 with reference shown in FIG. The range that is white in the general chromaticity classification of the system color name, or the range that is white / purple white / blue white / green white, yellow Noshiro is defined as white, Such a definition may be adopted.

＜実現色度範囲＞
図５に、青色ＬＥＤ素子と、緑色酸窒化物蛍光体と黄色酸窒化物蛍光体と赤色窒化物蛍光体とからなるＬＥＤランプで表現可能な色度範囲を示す。また、比較のために、ＮＴＳＣ規格とｓＲＧＢ規格で定められた色度範囲を記載した。本発明の有色ＬＥＤランプで表現可能な色度範囲は、図５に示したようにＣＩＥ１９３１色度図上の面積比にして、ＮＴＳＣ規格に対して８２％、ｓＲＧＢ規格に対して１１６％と十分広い範囲となっている。 <Realized chromaticity range>
FIG. 5 shows a chromaticity range that can be expressed by an LED lamp composed of a blue LED element, a green oxynitride phosphor, a yellow oxynitride phosphor, and a red nitride phosphor. For comparison, the chromaticity range defined by the NTSC standard and the sRGB standard is shown. As shown in FIG. 5, the chromaticity range that can be expressed by the colored LED lamp of the present invention is 82% for the NTSC standard and 116% for the sRGB standard as the area ratio on the CIE1931 chromaticity diagram. It is a wide range.

＜第１の有色ＬＥＤランプ＞
第１の有色ＬＥＤランプとして、青色ＬＥＤ素子と黄色酸窒化物蛍光体を用いて作製した一連の有色ＬＥＤランプについて説明する。
前述したように砲弾型ＬＥＤランプを作製した。この時、蛍光体を分散させた樹脂の塗布量を変化させて、様々な色度の有色ＬＥＤランプとした。図１４に、ＣＩＥ１９３１色度図（ＸＹＺ表色系色度図）上における黄色の第１の蛍光体を用いた一連のＬＥＤランプの色度座標の一例を示す。蛍光体を分散させた樹脂の塗布量を増加させるにつれて、青・青紫・紫・うすい紫・紫みの白・うすいピンク・黄みの白・うすい黄赤・黄赤・黄の各発光色が実現可能であることがわかる。 <First colored LED lamp>
A series of colored LED lamps produced using a blue LED element and a yellow oxynitride phosphor will be described as the first colored LED lamp.
A bullet-type LED lamp was produced as described above. At this time, the application amount of the resin in which the phosphor was dispersed was changed to obtain colored LED lamps having various chromaticities. FIG. 14 shows an example of a chromaticity coordinate of a series of LED lamps using a yellow first phosphor on the CIE1931 chromaticity diagram (XYZ color system chromaticity diagram). As the coating amount of the resin in which the phosphor is dispersed is increased, the emission colors of blue, bluish purple, purple, light purple, purple white, light pink, yellowish white, light yellow red, yellow red and yellow It can be seen that this is feasible.

＜第２の有色ＬＥＤランプ＞
第２の有色ＬＥＤランプとして、青色ＬＥＤ素子と赤色窒化物蛍光体を用いて作製した一連の有色ＬＥＤランプについて説明する。
前述したように砲弾型ＬＥＤランプを作製した。この時、蛍光体を分散させた樹脂の塗布量を変化させて、様々な色度の有色ＬＥＤランプとした。図１５に、ＣＩＥ１９３１色度図（ＸＹＺ表色系色度図）上における赤色の第２の蛍光体を用いた一連のＬＥＤランプの色度座標の一例を示す。蛍光体を分散させた樹脂の塗布量を増加させるにつれて、青・青紫・紫・赤紫・赤の各発光色が実現可能であることがわかる。 <Second colored LED lamp>
A series of colored LED lamps manufactured using a blue LED element and a red nitride phosphor will be described as the second colored LED lamp.
A bullet-type LED lamp was produced as described above. At this time, the application amount of the resin in which the phosphor was dispersed was changed to obtain colored LED lamps having various chromaticities. FIG. 15 shows an example of a chromaticity coordinate of a series of LED lamps using a red second phosphor on the CIE1931 chromaticity diagram (XYZ color system chromaticity diagram). It can be seen that blue, blue-violet, purple, magenta, and red emission colors can be realized as the coating amount of the resin in which the phosphor is dispersed is increased.

＜第３の有色ＬＥＤランプ＞
第３の有色ＬＥＤランプとして、青色ＬＥＤ素子と緑色酸窒化物蛍光体を用いて作製した一連の有色ＬＥＤランプについて説明する。
前述したように砲弾型ＬＥＤランプを作製した。この時、蛍光体を分散させた樹脂の塗布量を変化させて、様々な色度の有色ＬＥＤランプとした。図１６に、ＣＩＥ１９３１色度図（ＸＹＺ表色系色度図）上における緑色の第１の蛍光体を用いた一連のＬＥＤランプの色度座標の一例を示す。蛍光体を分散させた樹脂の塗布量を増加させるにつれて、青・うすい青・うすい青緑・うすい緑・緑・黄緑の各発光色が実現可能であることがわかる。 <Third colored LED lamp>
A series of colored LED lamps manufactured using a blue LED element and a green oxynitride phosphor will be described as a third colored LED lamp.
A bullet-type LED lamp was produced as described above. At this time, the application amount of the resin in which the phosphor was dispersed was changed to obtain colored LED lamps having various chromaticities. FIG. 16 shows an example of chromaticity coordinates of a series of LED lamps using the first green phosphor on the CIE1931 chromaticity diagram (XYZ color system chromaticity diagram). It can be seen that the emission colors of blue, light blue, light blue-green, light green, green, and yellow-green can be realized as the coating amount of the resin in which the phosphor is dispersed is increased.

＜第４の有色ＬＥＤランプ＞
第４の有色ＬＥＤランプとして、青色ＬＥＤ素子と第１の蛍光体である黄色の酸窒化物蛍光体と第２の蛍光体である赤色の窒化物蛍光体を１対１で混合したものを用いて作製した一連の有色ＬＥＤランプについて説明する。
前述したように砲弾型ＬＥＤランプを作製した。この時、蛍光体を分散させた樹脂の塗布量を変化させて、様々な色度の有色ＬＥＤランプとした。図６に、ＣＩＥ１９３１色度図（ＸＹＺ表色系色度図）上における黄色蛍光体と赤色蛍光体を１対１で混合したものを用いて作製した一連のＬＥＤランプの色度座標の一例を示す。蛍光体を分散させた樹脂の塗布量を増加させるにつれて、青・青紫・紫・紫みのピンク・ピンク・赤・黄赤の各発光色が実現可能であることがわかる。
また、図１７には、図６に示した中からＸＹＺ表色系（ｘ，ｙ）色度座標（０．２４９，０．１２６）の紫色で発光する砲弾型ＬＥＤランプの発光スペクトルを示す。 <Fourth colored LED lamp>
As the fourth colored LED lamp, a blue LED element, a yellow oxynitride phosphor that is the first phosphor, and a red nitride phosphor that is the second phosphor are mixed in a one-to-one relationship. A series of colored LED lamps manufactured as described above will be described.
A bullet-type LED lamp was produced as described above. At this time, the application amount of the resin in which the phosphor was dispersed was changed to obtain colored LED lamps having various chromaticities. FIG. 6 shows an example of chromaticity coordinates of a series of LED lamps manufactured using a mixture of yellow phosphor and red phosphor on a CIE1931 chromaticity diagram (XYZ color system chromaticity diagram). Show. It can be seen that the emission colors of blue, blue-violet, purple, purple-pink, pink, red, and yellow-red can be realized as the coating amount of the resin in which the phosphor is dispersed is increased.
Further, FIG. 17 shows an emission spectrum of a bullet-type LED lamp that emits purple light in the XYZ color system (x, y) chromaticity coordinates (0.249, 0.126) from those shown in FIG.

＜第５の有色ＬＥＤランプ＞
第５の有色ＬＥＤランプとして、青色ＬＥＤ素子と第１の蛍光体である黄色の酸窒化物蛍光体と第２の蛍光体である赤色の窒化物蛍光体を２対１で混合したものを用いて作製した一連の有色ＬＥＤランプについて説明する。
前述したように砲弾型ＬＥＤランプを作製した。この時、蛍光体を分散させた樹脂の塗布量を変化させて、様々な色度の有色ＬＥＤランプとした。図７に、ＣＩＥ１９３１色度図（ＸＹＺ表色系色度図）上における黄色蛍光体と赤色蛍光体を２対１で混合したものを用いて作製した一連のＬＥＤランプの色度座標の一例を示す。蛍光体を分散させた樹脂の塗布量を増加させるにつれて、青・青紫・紫・紫みのピンク・ピンク・オレンジピンク・黄赤の各発光色が実現可能であることがわかる。
また、図１８には、図７に示した中からＸＹＺ表色系（ｘ，ｙ）色度座標（０．４７７，０．２９１）のピンク色で発光する砲弾型ＬＥＤランプの発光スペクトルを示す。 <Fifth colored LED lamp>
As the fifth colored LED lamp, a two-to-one mixture of a blue LED element, a yellow oxynitride phosphor as the first phosphor and a red nitride phosphor as the second phosphor is used. A series of colored LED lamps manufactured as described above will be described.
A bullet-type LED lamp was produced as described above. At this time, the application amount of the resin in which the phosphor was dispersed was changed to obtain colored LED lamps having various chromaticities. FIG. 7 shows an example of a chromaticity coordinate of a series of LED lamps produced using a mixture of yellow phosphor and red phosphor on a CIE1931 chromaticity diagram (XYZ color system chromaticity diagram) in a two-to-one relationship. Show. It can be seen that the emission colors of blue, blue-violet, purple, purple-pink, pink, orange pink, and yellow-red can be realized as the coating amount of the resin in which the phosphor is dispersed is increased.
Further, FIG. 18 shows an emission spectrum of a bullet-type LED lamp that emits light in pink in the XYZ color system (x, y) chromaticity coordinates (0.477, 0.291) from among those shown in FIG. .

＜第６の有色ＬＥＤランプ＞
第６の有色ＬＥＤランプとして、青色ＬＥＤ素子と第１の蛍光体である黄色の酸窒化物蛍光体と第２の蛍光体である赤色の窒化物蛍光体を３．５対１で混合したものを用いて作製した一連の有色ＬＥＤランプについて説明する。
前述したように砲弾型ＬＥＤランプを作製した。この時、蛍光体を分散させた樹脂の塗布量を変化させて、様々な色度の有色ＬＥＤランプとした。図８に、ＣＩＥ１９３１色度図（ＸＹＺ表色系色度図）上における黄色蛍光体と赤色蛍光体を３．５対１で混合したものを用いて作製した一連のＬＥＤランプの色度座標の一例を示す。蛍光体を分散させた樹脂の塗布量を増加させるにつれて、青・青紫・紫・うすい紫・紫みのピンク・ピンク・オレンジピンク・黄赤の各発光色が実現可能であることがわかる。 <Sixth colored LED lamp>
As a sixth colored LED lamp, a blue LED element, a yellow oxynitride phosphor that is a first phosphor, and a red nitride phosphor that is a second phosphor are mixed in a ratio of 3.5 to 1. A series of colored LED lamps manufactured using the above will be described.
A bullet-type LED lamp was produced as described above. At this time, the application amount of the resin in which the phosphor was dispersed was changed to obtain colored LED lamps having various chromaticities. FIG. 8 shows the chromaticity coordinates of a series of LED lamps manufactured using a mixture of yellow phosphor and red phosphor in a CIE 1931 chromaticity diagram (XYZ color system chromaticity diagram) in a ratio of 3.5 to 1. An example is shown. It can be seen that the emission colors of blue, bluish purple, purple, light purple, purple pink, pink, orange pink and yellow red can be realized as the coating amount of the resin in which the phosphor is dispersed is increased.

＜第７の有色ＬＥＤランプ＞
第７の有色ＬＥＤランプとして、青色ＬＥＤ素子と第１の蛍光体である黄色の酸窒化物蛍光体と第２の蛍光体である赤色の窒化物蛍光体を１０対１で混合したものを用いて作製した一連の有色ＬＥＤランプについて説明する。
前述したように砲弾型ＬＥＤランプを作製した。この時、蛍光体を分散させた樹脂の塗布量を変化させて、様々な色度の有色ＬＥＤランプとした。図９に、ＣＩＥ１９３１色度図（ＸＹＺ表色系色度図）上における黄色蛍光体と赤色蛍光体を１０対１で混合したものを用いて作製した一連のＬＥＤランプの色度座標の一例を示す。蛍光体を分散させた樹脂の塗布量を増加させるにつれて、青・青紫・紫・うすい紫・紫みの白・うすいピンク・ピンク・オレンジピンク・うすい黄赤・黄赤・黄の各発光色が実現可能であることがわかる。
また、図１９には、図９に示した中からＸＹＺ表色系（ｘ，ｙ）色度座標（０．５２２，０．４２３）の黄赤色で発光する砲弾型ＬＥＤランプの発光スペクトルを示す。また図２１には、図９に示した中からＸＹＺ表色系（ｘ，ｙ）色度座標（０．３９６，０．３０１）のうすいピンクで発光する砲弾型ＬＥＤランプの発光スペクトルを示す。 <Seventh colored LED lamp>
As a seventh colored LED lamp, a blue LED element, a yellow oxynitride phosphor that is a first phosphor, and a red nitride phosphor that is a second phosphor are mixed in a ratio of 10 to 1. A series of colored LED lamps manufactured as described above will be described.
A bullet-type LED lamp was produced as described above. At this time, the application amount of the resin in which the phosphor was dispersed was changed to obtain colored LED lamps having various chromaticities. FIG. 9 shows an example of chromaticity coordinates of a series of LED lamps produced using a mixture of yellow phosphor and red phosphor in a CIE1931 chromaticity diagram (XYZ color system chromaticity diagram) in a 10-to-1 relationship. Show. As the coating amount of the resin in which the phosphor is dispersed is increased, the emission colors of blue, bluish purple, purple, light purple, purple white, light pink, pink, orange pink, light yellow red, yellow red and yellow It can be seen that this is feasible.
In addition, FIG. 19 shows an emission spectrum of a bullet-type LED lamp that emits yellow-red light in the XYZ color system (x, y) chromaticity coordinates (0.522, 0.423) from those shown in FIG. . FIG. 21 shows an emission spectrum of a bullet-type LED lamp that emits light pink in the XYZ color system (x, y) chromaticity coordinates (0.396, 0.301) from the one shown in FIG.

＜第８の有色ＬＥＤランプ＞
第８の有色ＬＥＤランプとして、青色ＬＥＤ素子と第１の蛍光体である黄色の酸窒化物蛍光体と第３の蛍光体である緑色の酸窒化物蛍光体を１対５で混合したものを用いて作製した一連の有色ＬＥＤランプについて説明する。
前述したように砲弾型ＬＥＤランプを作製した。この時、蛍光体を分散させた樹脂の塗布量を変化させて、様々な色度の有色ＬＥＤランプとした。図１０に、ＣＩＥ１９３１色度図（ＸＹＺ表色系色度図）上における黄色蛍光体と緑色蛍光体を１対５で混合したものを用いて作製した一連のＬＥＤランプの色度座標の一例を示す。蛍光体を分散させた樹脂の塗布量を増加させるにつれて、青・青紫・うすい青・青みの白・緑みの白・うすい緑・うすい黄緑・黄緑の各発光色が実現可能であることがわかる。
また、図２２には、図１０に示した中からＸＹＺ表色系（ｘ，ｙ）色度座標（０．３０２，０．３７９）の緑みの白で発光する砲弾型ＬＥＤランプの発光スペクトルを示す。また図２４には、図１０に示した中からＸＹＺ表色系（ｘ，ｙ）色度座標（０．３６６，０．４６３）のうすい黄緑で発光する砲弾型ＬＥＤランプの発光スペクトルを示す。また図２５には、図１０に示した中からＸＹＺ表色系（ｘ，ｙ）色度座標（０．４１４，０．５１２）の黄緑で発光する砲弾型ＬＥＤランプの発光スペクトルを示す。 <Eighth colored LED lamp>
As an eighth colored LED lamp, a blue LED element, a yellow oxynitride phosphor that is a first phosphor, and a green oxynitride phosphor that is a third phosphor are mixed in a 1: 5 ratio. A series of colored LED lamps produced by using them will be described.
A bullet-type LED lamp was produced as described above. At this time, the application amount of the resin in which the phosphor was dispersed was changed to obtain colored LED lamps having various chromaticities. FIG. 10 shows an example of chromaticity coordinates of a series of LED lamps manufactured using a mixture of yellow phosphor and green phosphor in a 1: 5 ratio on the CIE1931 chromaticity diagram (XYZ color system chromaticity diagram). Show. As the coating amount of the resin in which the phosphor is dispersed is increased, each emission color of blue, bluish purple, light blue, blue white, green white, light green, light yellow green, and yellow green can be realized. I understand.
Further, FIG. 22 shows an emission spectrum of a bullet-type LED lamp that emits light in greenish white of the XYZ color system (x, y) chromaticity coordinates (0.302, 0.379) shown in FIG. Indicates. FIG. 24 shows an emission spectrum of a bullet-type LED lamp that emits light yellowish green in the XYZ color system (x, y) chromaticity coordinates (0.366, 0.463) from those shown in FIG. . FIG. 25 shows an emission spectrum of a bullet-type LED lamp that emits yellow-green light in the XYZ color system (x, y) chromaticity coordinates (0.414, 0.512) from among those shown in FIG.

＜第９の有色ＬＥＤランプ＞
第９の有色ＬＥＤランプとして、青色ＬＥＤ素子と第１の蛍光体である黄色の酸窒化物蛍光体と第３の蛍光体である緑色の酸窒化物蛍光体を２対３で混合したものを用いて作製した一連の有色ＬＥＤランプについて説明する。
前述したように砲弾型ＬＥＤランプを作製した。この時、蛍光体を分散させた樹脂の塗布量を変化させて、様々な色度の有色ＬＥＤランプとした。図１１に、ＣＩＥ１９３１色度図（ＸＹＺ表色系色度図）上における黄色蛍光体と緑色蛍光体を２対３で混合したものを用いて作製した一連のＬＥＤランプの色度座標の一例を示す。蛍光体を分散させた樹脂の塗布量を増加させるにつれて、青・青紫・うすい青紫・紫みの白・白・黄みの白・うすい黄・黄の各発光色が実現可能であることがわかる。
また、図２０には、図１１に示した中からＸＹＺ表色系（ｘ，ｙ）色度座標（０．４８５，０．４７３）の黄色で発光する砲弾型ＬＥＤランプの発光スペクトルを示す。また図２３には、図１１に示した中からＸＹＺ表色系（ｘ，ｙ）色度座標（０．４３７，０．４４４）のうすい黄で発光する砲弾型ＬＥＤランプの発光スペクトルを示す。 <9th colored LED lamp>
As a ninth colored LED lamp, a blue LED element, a yellow oxynitride phosphor that is a first phosphor, and a green oxynitride phosphor that is a third phosphor are mixed in a two-to-three manner. A series of colored LED lamps produced by using them will be described.
A bullet-type LED lamp was produced as described above. At this time, the application amount of the resin in which the phosphor was dispersed was changed to obtain colored LED lamps having various chromaticities. FIG. 11 shows an example of a chromaticity coordinate of a series of LED lamps produced using a mixture of yellow phosphor and green phosphor in a 2 to 3 configuration on the CIE1931 chromaticity diagram (XYZ color system chromaticity diagram). Show. It can be seen that blue, blue-violet, light blue-purple, purple white, white, yellowish white, light yellow, and yellow emission colors can be realized as the coating amount of the resin in which the phosphor is dispersed is increased. .
FIG. 20 shows an emission spectrum of a bullet-type LED lamp that emits yellow light in the XYZ color system (x, y) chromaticity coordinates (0.485, 0.473) shown in FIG. FIG. 23 shows an emission spectrum of a bullet-type LED lamp that emits light yellow in the XYZ color system (x, y) chromaticity coordinates (0.437, 0.444) shown in FIG.

＜第１０の有色ＬＥＤランプ＞
第１０の有色ＬＥＤランプとして、青色ＬＥＤ素子と第１の蛍光体である黄色の酸窒化物蛍光体と第３の蛍光体である緑色の酸窒化物蛍光体を２対１で混合したものを用いて作製した一連の有色ＬＥＤランプについて説明する。
前述したように砲弾型ＬＥＤランプを作製した。この時、蛍光体を分散させた樹脂の塗布量を変化させて、様々な色度の有色ＬＥＤランプとした。図１２に、ＣＩＥ１９３１色度図（ＸＹＺ表色系色度図）上における黄色蛍光体と緑色蛍光体を２対１で混合したものを用いて作製した一連のＬＥＤランプの色度座標の一例を示す。蛍光体を分散させた樹脂の塗布量を増加させるにつれて、青・青紫・紫・うすい紫・紫みの白・うすいピンク・白・黄みの白・うすい黄赤・うすい黄・黄の各発光色が実現可能であることがわかる。 <10th colored LED lamp>
As a tenth colored LED lamp, a blue LED element, a yellow oxynitride phosphor that is a first phosphor, and a green oxynitride phosphor that is a third phosphor are mixed in a two-to-one manner. A series of colored LED lamps produced by using them will be described.
A bullet-type LED lamp was produced as described above. At this time, the application amount of the resin in which the phosphor was dispersed was changed to obtain colored LED lamps having various chromaticities. FIG. 12 shows an example of chromaticity coordinates of a series of LED lamps manufactured using a mixture of yellow phosphor and green phosphor on a CIE1931 chromaticity diagram (XYZ color system chromaticity diagram) in a two-to-one relationship. Show. Blue, blue-violet, purple, light purple, purple white, light pink, white, yellowish white, light yellow red, light yellow, and yellow as the coating amount of the resin in which the phosphor is dispersed is increased. It can be seen that the color is feasible.

＜第１１の有色ＬＥＤランプ＞
第１１の有色ＬＥＤランプとして、青色ＬＥＤ素子と第１の蛍光体である黄色の酸窒化物蛍光体と第３の蛍光体である緑色の酸窒化物蛍光体を４対１で混合したものを用いて作製した一連の有色ＬＥＤランプについて説明する。
前述したように砲弾型ＬＥＤランプを作製した。この時、蛍光体を分散させた樹脂の塗布量を変化させて、様々な色度の有色ＬＥＤランプとした。図１３に、ＣＩＥ１９３１色度図（ＸＹＺ表色系色度図）上における黄色蛍光体と緑色蛍光体を４対１で混合したものを用いて作製した一連のＬＥＤランプの色度座標の一例を示す。蛍光体を分散させた樹脂の塗布量を増加させるにつれて、青・青紫・紫・うすい紫・紫みの白・白・黄みの白・うすい黄・黄の各発光色が実現可能であることがわかる。 <11th colored LED lamp>
As an eleventh colored LED lamp, a blue LED element, a yellow oxynitride phosphor that is a first phosphor, and a green oxynitride phosphor that is a third phosphor are mixed in a 4-to-1 relationship. A series of colored LED lamps produced by using them will be described.
A bullet-type LED lamp was produced as described above. At this time, the application amount of the resin in which the phosphor was dispersed was changed to obtain colored LED lamps having various chromaticities. FIG. 13 shows an example of chromaticity coordinates of a series of LED lamps manufactured using a mixture of yellow phosphor and green phosphor in a CIE1931 chromaticity diagram (XYZ color system chromaticity diagram) in a 4-to-1 relationship. Show. As the coating amount of the resin in which the phosphor is dispersed is increased, the emission colors of blue, bluish purple, purple, light purple, purple white, white, yellowish white, light yellow and yellow can be realized. I understand.

＜有色ＬＥＤランプの色度軌跡について＞
ＣＩＥ１９３１色度図（ＸＹＺ表色系色度図）上では、第１の色と第２の色との混色によって得られる色度座標は第１の色の色度座標と第２の色の色度座標とを結ぶ直線上に位置するはずである。しかしながら、これまでに説明したそれぞれの一連の有色ＬＥＤランプの色度の軌跡は直線上にのっていない。これは、蛍光体の吸収スペクトルの波長依存性などにより、青色ＬＥＤ素子から発せられる青色光や、青色ＬＥＤ素子の近傍に位置する内層の蛍光体粒子から発せられる緑色光・黄色光・赤色光が、その外層に位置する蛍光体の影響で短波長成分の割合が減少し、長波長成分の割合が増加することに由来する。用いる蛍光体の光学特性の違いやＬＥＤランプの実装構造の差異により、この色度の軌跡が直線に近いものとなるか湾曲したものとなるかが決まる。本発明で用いた各蛍光体についても継続的に改良が実施されていること、また本発明ではＬＥＤランプの構造を限定しないことから、本発明の各実施例に記載の蛍光体の混合比とこれにより実現された有色ＬＥＤランプの色度との関係は一つの例を示したものであり、本発明はこれらの例示にのみ限定されない。 <Chromaticity locus of colored LED lamp>
On the CIE1931 chromaticity diagram (XYZ color system chromaticity diagram), the chromaticity coordinates obtained by mixing the first color and the second color are the chromaticity coordinates of the first color and the color of the second color. It should be on a straight line connecting the degree coordinates. However, the locus of chromaticity of each series of colored LED lamps described so far is not on a straight line. This is because blue light emitted from the blue LED element and green light, yellow light, and red light emitted from the phosphor particles in the inner layer located near the blue LED element are caused by the wavelength dependence of the absorption spectrum of the phosphor. This is because the ratio of the short wavelength component decreases and the ratio of the long wavelength component increases due to the influence of the phosphor located in the outer layer. Depending on the difference in the optical characteristics of the phosphors used and the difference in the mounting structure of the LED lamp, it is determined whether the locus of chromaticity is close to a straight line or curved. Since the phosphors used in the present invention are continuously improved and the structure of the LED lamp is not limited in the present invention, the phosphor mixture ratios described in the respective embodiments of the present invention and The relationship with the chromaticity of the colored LED lamp realized by this shows one example, and the present invention is not limited to these examples.

以上説明したように、本発明の有色ＬＥＤランプは、白色以外の任意の色度で発光する装飾性あふれる有色の光源であり、長寿命であり、目的や用途に応じて多数の色を選択し、又は複数色のランプを組み合わせて使用することができ、有色の装飾用照明装置及びカラーディスプレイサイン装置などの光源として有用である。
また、本発明の有色ＬＥＤランプは、蛍光体に高効率で発光する緑色・黄色・赤色の酸窒化物蛍光体及び窒化物蛍光体のみを用いて有色のＬＥＤを構成しているため、広い色度範囲で任意の色度を実現可能であり、発光強度も高く、カドミウム等の環境汚染の懸念される物質を含まず、温度特性や長期信頼性に優れている。
また、本発明の有色ＬＥＤランプは、青色ＬＥＤ素子と蛍光体とからなるため、複数のＬＥＤ素子の混色光を利用するタイプのものよりも格段に安価に提供することができる。
また、本発明の有色ＬＥＤランプは、黄色光成分の多い中間色を発することができるため、青色光・緑色光・赤色光混合型の有色照明と比較して当該有色照明の色度に近い物体色のものを照らした時にその物体がくすんだ色とならずに良い色で視認可能となる。 As described above, the colored LED lamp of the present invention is a decorative colored light source that emits light at an arbitrary chromaticity other than white, has a long life, and selects a number of colors according to the purpose and application. Or, it is possible to use a combination of lamps of a plurality of colors, and it is useful as a light source for a colored decorative lighting device and a color display sign device.
In addition, since the colored LED lamp of the present invention comprises a colored LED using only green, yellow, and red oxynitride phosphors and nitride phosphors that emit light with high efficiency, Any chromaticity can be realized in the temperature range, the light emission intensity is high, and there is no concern about environmental pollution such as cadmium, and the temperature characteristics and long-term reliability are excellent.
Moreover, since the colored LED lamp of the present invention is composed of a blue LED element and a phosphor, it can be provided at a much lower price than a type using a mixed color light of a plurality of LED elements.
Further, since the colored LED lamp of the present invention can emit an intermediate color with a lot of yellow light components, the object color is close to the chromaticity of the colored illumination as compared with the colored illumination of the blue light / green light / red light mixed type. When the object is illuminated, the object becomes visible with a good color instead of a dull color.

本発明に係る装飾用照明装置及びカラーディスプレイサイン装置は、前述した有色ＬＥＤランプを光源として用いることを特徴としている。
この装飾用照明装置は、光源として本発明に係る有色ＬＥＤランプを用いる以外は、従来の各種照明装置と同様の構成とすることができ、例えば、１つ以上の有色ＬＥＤランプを装置本体に実装し、該ランプから発する有色光を直接又は反射させて所定方向に照射する構造とすることができる。
また、カラーディスプレイサイン装置は、視認側に多数の有色ＬＥＤランプを並べて構成され、色の異なる複数種の有色ＬＥＤランプを適切に配置することにより、固定デザイン、例えば、文字、数字、マーク、模様などを表示するようになっている。本発明に係るカラーディスプレイサイン装置は、従来のネオンサイン等を代替する、固定デザインのカラーディスプレイサインに用いることができる。 The decorative illumination device and the color display sign device according to the present invention are characterized by using the above-described colored LED lamp as a light source.
The decorative lighting device can have the same configuration as that of various conventional lighting devices except that the colored LED lamp according to the present invention is used as a light source. For example, one or more colored LED lamps are mounted on the device main body. And it can be set as the structure which irradiates in a predetermined direction directly or reflecting the colored light emitted from this lamp | ramp.
In addition, the color display sign device is configured by arranging a large number of colored LED lamps on the viewer side, and by appropriately arranging a plurality of types of colored LED lamps having different colors, a fixed design such as letters, numbers, marks, patterns, etc. Etc. are to be displayed. The color display sign apparatus according to the present invention can be used for a fixed-display color display sign that replaces a conventional neon sign or the like.

砲弾型ＬＥＤランプの断面図である。It is sectional drawing of a bullet-type LED lamp. チップ型ＬＥＤランプの断面図である。It is sectional drawing of a chip type LED lamp. ＪＩＳ Ｚ ８１１０の系統色名の一般的な色度区分図である。It is a general chromaticity division diagram of the system color name of JIS Z 8110. 昼光色・昼白色・白色・温白色・電球色の色度範囲を示す図である。It is a figure which shows the chromaticity range of daylight color, daylight white, white, warm white, and a light bulb color. 青色ＬＥＤ素子と緑色酸窒化物蛍光体と黄色酸窒化物蛍光体と赤色窒化物蛍光体とからなるＬＥＤランプで表現可能な色度範囲及びＮＴＳＣ規格とｓＲＧＢ規格で定められた色度範囲を示す図である。A chromaticity range that can be expressed by an LED lamp including a blue LED element, a green oxynitride phosphor, a yellow oxynitride phosphor, and a red nitride phosphor, and a chromaticity range defined by the NTSC standard and the sRGB standard are shown. FIG. ＸＹＺ表色系色度図上における黄色の第１の蛍光体と赤色の第２の蛍光体の混合比を１対１にした有色ＬＥＤランプの色度座標を示す図である。It is a figure which shows the chromaticity coordinate of the colored LED lamp which made the mixing ratio of yellow 1st fluorescent substance and red 2nd fluorescent substance 1: 1 on the XYZ color system chromaticity diagram. ＸＹＺ表色系色度図上における黄色の第１の蛍光体と赤色の第２の蛍光体の混合比を２対１にした有色ＬＥＤランプの色度座標を示す図である。It is a figure which shows the chromaticity coordinate of the colored LED lamp which made the mixing ratio of the yellow 1st fluorescent substance and the red 2nd fluorescent substance 2: 1 on an XYZ color system chromaticity diagram. ＸＹＺ表色系色度図上における黄色の第１の蛍光体と赤色の第２の蛍光体の混合比を３．５対１にした有色ＬＥＤランプの色度座標を示す図である。It is a figure which shows the chromaticity coordinate of the colored LED lamp which made the mixing ratio of the yellow 1st fluorescent substance and the red 2nd fluorescent substance 3.5 to 1 on an XYZ color system chromaticity diagram. ＸＹＺ表色系色度図上における黄色の第１の蛍光体と赤色の第２の蛍光体の混合比を１０対１にした有色ＬＥＤランプの色度座標を示す図である。It is a figure which shows the chromaticity coordinate of the colored LED lamp which made the mixing ratio of the yellow 1st fluorescent substance and the red 2nd fluorescent substance 10: 1 on the XYZ color system chromaticity diagram. ＸＹＺ表色系色度図上における黄色の第１の蛍光体と緑色の第３の蛍光体の混合比を１対５にした有色ＬＥＤランプの色度座標を示す図である。It is a figure which shows the chromaticity coordinate of the colored LED lamp which made the mixing ratio of yellow 1st fluorescent substance and green 3rd fluorescent substance 1 to 5 on an XYZ color system chromaticity diagram. ＸＹＺ表色系色度図上における黄色の第１の蛍光体と緑色の第３の蛍光体の混合比を２対３にした有色ＬＥＤランプの色度座標を示す図である。It is a figure which shows the chromaticity coordinate of the colored LED lamp which made the mixture ratio of yellow 1st fluorescent substance and green 3rd fluorescent substance 2 to 3 on an XYZ color system chromaticity diagram. ＸＹＺ表色系色度図上における黄色の第１の蛍光体と緑色の第３の蛍光体の混合比を２対１にした有色ＬＥＤランプの色度座標を示す図である。It is a figure which shows the chromaticity coordinate of the colored LED lamp which made the mixture ratio of the yellow 1st fluorescent substance and the green 3rd fluorescent substance 2: 1 on an XYZ color system chromaticity diagram. ＸＹＺ表色系色度図上における黄色の第１の蛍光体と緑色の第３の蛍光体の混合比を４対１にした有色ＬＥＤランプの色度座標を示す図である。It is a figure which shows the chromaticity coordinate of the colored LED lamp which made the mixture ratio of the yellow 1st fluorescent substance and the green 3rd fluorescent substance 4: 1 on the XYZ color system chromaticity diagram. ＸＹＺ表色系色度図上における黄色の第１の蛍光体を用いた有色ＬＥＤランプの色度座標を示す図である。It is a figure which shows the chromaticity coordinate of the colored LED lamp using the yellow 1st fluorescent substance on an XYZ color system chromaticity diagram. ＸＹＺ表色系色度図上における赤色の第２の蛍光体を用いた有色ＬＥＤランプの色度座標を示す図である。It is a figure which shows the chromaticity coordinate of the colored LED lamp using the red 2nd fluorescent substance on an XYZ color system chromaticity diagram. ＸＹＺ表色系色度図上における緑色の第３の蛍光体を用いた有色ＬＥＤランプの色度座標を示す図である。It is a figure which shows the chromaticity coordinate of the colored LED lamp using the 3rd green fluorescent substance on an XYZ color system chromaticity diagram. 紫の色度範囲で発光する砲弾型ＬＥＤランプの発光スペクトルを示す図である。It is a figure which shows the emission spectrum of the bullet-type LED lamp which light-emits in the purple chromaticity range. ピンクの色度範囲で発光する砲弾型ＬＥＤランプの発光スペクトルを示す図である。It is a figure which shows the emission spectrum of the bullet-type LED lamp which light-emits in a pink chromaticity range. 黄赤の色度範囲で発光する砲弾型ＬＥＤランプの発光スペクトルを示す図である。It is a figure which shows the emission spectrum of the bullet-type LED lamp which light-emits in the chromaticity range of yellow red. 黄の色度範囲で発光する砲弾型ＬＥＤランプの発光スペクトルを示す図である。It is a figure which shows the emission spectrum of the bullet-type LED lamp which light-emits in the chromaticity range of yellow. うすいピンクの色度範囲で発光する砲弾型ＬＥＤランプの発光スペクトルを示す図である。It is a figure which shows the emission spectrum of the bullet-type LED lamp which light-emits in the light pink chromaticity range. 緑みの白の色度範囲で発光する砲弾型ＬＥＤランプの発光スペクトルを示す図である。It is a figure which shows the emission spectrum of the bullet-type LED lamp which light-emits in the green white chromaticity range. うすい黄の色度範囲で発光する砲弾型ＬＥＤランプの発光スペクトルを示す図である。It is a figure which shows the emission spectrum of the bullet-type LED lamp which light-emits in the light yellow chromaticity range. うすい黄緑の色度範囲で発光する砲弾型ＬＥＤランプの発光スペクトルを示す図である。It is a figure which shows the emission spectrum of the bullet-type LED lamp which light-emits in the light yellow-green chromaticity range. 黄緑の色度範囲で発光する砲弾型ＬＥＤランプの発光スペクトルを示す図である。It is a figure which shows the emission spectrum of the bullet-type LED lamp which light-emits in the chromaticity range of yellowish green.

符号の説明Explanation of symbols

１…砲弾型ＬＥＤランプ、２，３…リードワイヤ、４…青色ＬＥＤ素子、５…金細線、６…蛍光体分散樹脂、７…蛍光体、８…透明な樹脂、１１…チップ型ＬＥＤランプ、１２，１３…リードワイヤ、１４…青色ＬＥＤ素子、１５…ボンディングワイヤ、１６…蛍光体分散樹脂、１７…蛍光体、１９…パッケージ。
DESCRIPTION OF SYMBOLS 1 ... Cannonball type LED lamp, 2, 3 ... Lead wire, 4 ... Blue LED element, 5 ... Gold fine wire, 6 ... Phosphor dispersion resin, 7 ... Phosphor, 8 ... Transparent resin, 11 ... Chip type LED lamp, DESCRIPTION OF SYMBOLS 12, 13 ... Lead wire, 14 ... Blue LED element, 15 ... Bonding wire, 16 ... Phosphor dispersion resin, 17 ... Phosphor, 19 ... Package.

Claims (15)

青色発光ダイオード素子と、青色光で励起され黄色光を発する黄色蛍光体とを有してなり、有色光を発することを特徴とする有色発光ダイオードランプ。   A colored light-emitting diode lamp comprising a blue light-emitting diode element and a yellow phosphor that is excited by blue light and emits yellow light, and emits colored light. 青色発光ダイオード素子と、青色光で励起され赤色光を発する赤色蛍光体とを有してなり、有色光を発することを特徴とする有色発光ダイオードランプ。   A colored light-emitting diode lamp comprising: a blue light-emitting diode element; and a red phosphor that emits red light when excited by blue light, and emits colored light. 青色発光ダイオード素子と、青色光で励起され緑色光を発する緑色蛍光体とを有してなり、有色光を発することを特徴とする有色発光ダイオードランプ。   A colored light-emitting diode lamp comprising a blue light-emitting diode element and a green phosphor that emits green light when excited by blue light and emits colored light. 青色発光ダイオード素子と、青色光で励起され黄色光を発する黄色蛍光体と、青色光で励起され赤色光を発する赤色蛍光体とを有してなり、有色光を発することを特徴とする有色発光ダイオードランプ。   A colored light emitting device comprising: a blue light-emitting diode element; a yellow phosphor that emits yellow light when excited by blue light; and a red phosphor that emits red light when excited by blue light. Diode lamp. 青色発光ダイオード素子と、青色光で励起され黄色光を発する黄色蛍光体と、青色光で励起され緑色光を発する緑色蛍光体とを有してなり、有色光を発することを特徴とする有色発光ダイオードランプ。   A colored light emitting device comprising: a blue light emitting diode element; a yellow phosphor that emits yellow light when excited by blue light; and a green phosphor that emits green light when excited by blue light. Diode lamp. 青色発光ダイオード素子と、青色光で励起され黄色光を発する黄色蛍光体と、青色光で励起され赤色光を発する赤色蛍光体と、青色光で励起され緑色光を発する緑色蛍光体とを有してなることを特徴とする有色発光ダイオードランプ。   A blue light emitting diode element; a yellow phosphor that emits yellow light when excited by blue light; a red phosphor that emits red light when excited by blue light; and a green phosphor that emits green light when excited by blue light. A colored light-emitting diode lamp characterized by comprising: 前記蛍光体が窒化物又は酸窒化物であることを特徴とする請求項１〜６のいずれかに記載の有色発光ダイオードランプ。   The colored light-emitting diode lamp according to claim 1, wherein the phosphor is nitride or oxynitride. 前記黄色蛍光体は主相がアルファサイアロン蛍光体であることを特徴とする請求項１〜７のいずれかに記載の有色発光ダイオードランプ。   The colored light-emitting diode lamp according to any one of claims 1 to 7, wherein a main phase of the yellow phosphor is an alpha sialon phosphor. 前記アルファサイアロン蛍光体は、一般式ＣａｑＥｕｒ（Ｓｉ，Ａｌ）１２（Ｏ，Ｎ）１６で表され、アルファサイアロン結晶構造を有し、前記ｑが０．７５≦ｑ≦１．０の範囲であり、且つ前記ｒが０．０３≦ｒ≦０．０７の範囲である、カルシウムを固溶しユーロピウムで賦活したアルファサイアロン蛍光体であることを特徴とする請求項８に記載の有色発光ダイオードランプ。 The alpha sialon phosphor is represented by a general formula Ca q Eu r (Si, Al) 12 (O, N) 16 and has an alpha sialon crystal structure, where q is 0.75 ≦ q ≦ 1.0. The colored luminescence according to claim 8, wherein the phosphor is an alpha sialon phosphor in which calcium is dissolved and activated with europium, wherein r is in a range of 0.03 ≦ r ≦ 0.07. Diode lamp. 前記赤色蛍光体はユーロピウムで賦活したＣａＡｌＳｉＮ３であることを特徴とする請求項１〜９のいずれかに記載の有色発光ダイオードランプ。 The colored light-emitting diode lamp according to claim 1, wherein the red phosphor is CaAlSiN 3 activated with europium. 前記緑色蛍光体は主相がベータサイアロン蛍光体であることを特徴とする請求項１〜１０のいずれかに記載の有色発光ダイオードランプ。   The colored light-emitting diode lamp according to claim 1, wherein a main phase of the green phosphor is a beta sialon phosphor. 前記ベータサイアロン蛍光体は、一般式Ｅｕｓ（Ｓｉ，Ａｌ）６−ｓ（Ｏ，Ｎ）６で表され、ベータサイアロン結晶構造を有し、前記ｓが０．０１１≦ｓ≦０．０１９の範囲である、ユーロピウムで賦活したベータサイアロン蛍光体であることを特徴とする請求項１１に記載の有色発光ダイオードランプ。 The beta sialon phosphor is represented by a general formula Eu s (Si, Al) 6-s (O, N) 6 , has a beta sialon crystal structure, and the s is 0.011 ≦ s ≦ 0.019. The colored light-emitting diode lamp according to claim 11, which is a beta sialon phosphor activated with europium, which is a range. 発光色が青、青紫、紫、赤紫、赤、青緑、緑、黄緑、黄、黄赤、うすい青、うすい青紫、うすい紫、紫みのピンク、ピンク、オレンジピンク、うすい青緑、うすい緑、うすい黄緑、うすい黄、うすい黄赤、青みの白、紫みの白、うすいピンク、緑みの白、青みの白、白のいずれかであり、かつ昼光色、昼白色、白色、温白色、電球色のいずれの光源色色度範囲にも属さないことを特徴とする請求項１〜１２のいずれかに記載の有色発光ダイオードランプ。   Light emission color is blue, blue purple, purple, red purple, red, blue green, green, yellowish green, yellow, yellow red, light blue, light blue purple, light purple, purple pink, pink, orange pink, light blue green, Light green, light yellow-green, light yellow, light yellow-red, blue white, purple white, light pink, green white, blue white, white, and daylight, day white, white, The colored light-emitting diode lamp according to any one of claims 1 to 12, wherein the colored light-emitting diode lamp does not belong to any light source chromaticity range of warm white or light bulb color. 請求項１〜１３のいずれかに記載の有色発光ダイオードランプを光源に有することを特徴とする装飾用照明装置。   A decorative lighting device comprising the colored light-emitting diode lamp according to claim 1 as a light source. 請求項１〜１３のいずれかに記載の有色発光ダイオードランプを光源に有することを特徴とするカラーディスプレイサイン装置。

A color display sign device comprising the colored light-emitting diode lamp according to claim 1 as a light source.

JP2005275821A 2005-09-22 2005-09-22 Colored light emitting diode lamp, lighting apparatus for decoration, and color-display signing apparatus Pending JP2007088248A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005275821A JP2007088248A (en) 2005-09-22 2005-09-22 Colored light emitting diode lamp, lighting apparatus for decoration, and color-display signing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005275821A JP2007088248A (en) 2005-09-22 2005-09-22 Colored light emitting diode lamp, lighting apparatus for decoration, and color-display signing apparatus

Publications (1)

Publication Number Publication Date
JP2007088248A true JP2007088248A (en) 2007-04-05

Family

ID=37974929

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005275821A Pending JP2007088248A (en) 2005-09-22 2005-09-22 Colored light emitting diode lamp, lighting apparatus for decoration, and color-display signing apparatus

Country Status (1)

Country Link
JP (1) JP2007088248A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009028656A1 (en) * 2007-08-30 2009-03-05 Nichia Corporation Light emitting device
DE202008005509U1 (en) * 2008-02-26 2009-07-09 Ledon Lighting Jennersdorf Gmbh LED module with application-specific color adjustment
US7832895B2 (en) 2007-04-17 2010-11-16 Nichia Corporation Light emitting device
DE102010002332A1 (en) * 2009-11-30 2011-06-01 Ledon Lighting Jennersdorf Gmbh Retrofit LED lamp with warm white, especially flame-like white light
EP2312659A3 (en) * 2009-10-15 2011-06-29 LG Innotek Co., Ltd. Light emitting apparatus
CN102473815A (en) * 2009-07-02 2012-05-23 夏普株式会社 Light-emitting device
GB2487877A (en) * 2008-08-12 2012-08-08 Samsung Led Co Ltd Method of preparing a beta-SiAlON phosphor
JP2013131363A (en) * 2011-12-21 2013-07-04 Sharp Corp Lighting system and controller
JP2013163726A (en) * 2012-02-09 2013-08-22 Denki Kagaku Kogyo Kk Phosphor and light-emitting device
JP2013163734A (en) * 2012-02-09 2013-08-22 Denki Kagaku Kogyo Kk Phosphor and light-emitting device
JP2013163727A (en) * 2012-02-09 2013-08-22 Denki Kagaku Kogyo Kk Phosphor and light-emitting device
JP2013171687A (en) * 2012-02-20 2013-09-02 Sharp Corp Lighting device
JP2013171684A (en) * 2012-02-20 2013-09-02 Sharp Corp Lighting device
JP2013171686A (en) * 2012-02-20 2013-09-02 Sharp Corp Lighting device
KR101489280B1 (en) 2010-07-12 2015-02-04 삼성전자주식회사 white light emitting diode and liquid crystal display including the same
JP2015028983A (en) * 2013-07-30 2015-02-12 シャープ株式会社 Wavelength conversion member and light-emitting device
US8956038B2 (en) 2012-02-22 2015-02-17 Empire Technology Development Llc Lighting device having a light guide structure
JP2016058650A (en) * 2014-09-11 2016-04-21 パナソニックＩｐマネジメント株式会社 Light emission device, light source for illumination and luminaire
US9947840B2 (en) 2016-06-29 2018-04-17 Nichia Corporation Light emitting device and light source
US10741732B2 (en) 2018-01-31 2020-08-11 Nichia Corporation Light emitting device and light source
JP2021518677A (en) * 2018-03-20 2021-08-02 ビーエイエスエフ・ソシエタス・エウロパエアＢａｓｆ Ｓｅ Yellow light emitting element

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005154611A (en) * 2003-11-27 2005-06-16 National Institute For Materials Science Method for producing sialon fluorescent substance
JP2005255895A (en) * 2004-03-12 2005-09-22 National Institute For Materials Science Phosphor and its manufacturing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005154611A (en) * 2003-11-27 2005-06-16 National Institute For Materials Science Method for producing sialon fluorescent substance
JP2005255895A (en) * 2004-03-12 2005-09-22 National Institute For Materials Science Phosphor and its manufacturing method

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7832895B2 (en) 2007-04-17 2010-11-16 Nichia Corporation Light emitting device
CN101785120B (en) * 2007-08-30 2012-02-29 日亚化学工业株式会社 Light emitting device
US8648523B2 (en) 2007-08-30 2014-02-11 Nichia Corporation Light emitting device including light emitting element and phosphor
US8384092B2 (en) 2007-08-30 2013-02-26 Nichia Corporation Light emitting device
JPWO2009028656A1 (en) * 2007-08-30 2010-12-02 日亜化学工業株式会社 Light emitting device
JPWO2009028657A1 (en) * 2007-08-30 2010-12-02 日亜化学工業株式会社 Light emitting device
WO2009028657A1 (en) * 2007-08-30 2009-03-05 Nichia Corporation Light emitting device
WO2009028656A1 (en) * 2007-08-30 2009-03-05 Nichia Corporation Light emitting device
DE202008005509U1 (en) * 2008-02-26 2009-07-09 Ledon Lighting Jennersdorf Gmbh LED module with application-specific color adjustment
US8132939B2 (en) 2008-02-26 2012-03-13 Ledon Lighting Jennersdorf Gmbh LED module with application-specific color setting
GB2487877A (en) * 2008-08-12 2012-08-08 Samsung Led Co Ltd Method of preparing a beta-SiAlON phosphor
GB2487877B (en) * 2008-08-12 2012-12-12 Samsung Led Co Ltd Method for producing a Beta-Sialon phosphor
CN102473815A (en) * 2009-07-02 2012-05-23 夏普株式会社 Light-emitting device
EP2312659A3 (en) * 2009-10-15 2011-06-29 LG Innotek Co., Ltd. Light emitting apparatus
US8946743B2 (en) 2009-10-15 2015-02-03 Lg Innotek Co., Ltd. Light emitting apparatus
US9683715B2 (en) 2009-10-15 2017-06-20 Lg Innotek Co., Ltd. Light emitting apparatus
DE102010002332A1 (en) * 2009-11-30 2011-06-01 Ledon Lighting Jennersdorf Gmbh Retrofit LED lamp with warm white, especially flame-like white light
KR101489280B1 (en) 2010-07-12 2015-02-04 삼성전자주식회사 white light emitting diode and liquid crystal display including the same
JP2013131363A (en) * 2011-12-21 2013-07-04 Sharp Corp Lighting system and controller
JP2013163734A (en) * 2012-02-09 2013-08-22 Denki Kagaku Kogyo Kk Phosphor and light-emitting device
JP2013163726A (en) * 2012-02-09 2013-08-22 Denki Kagaku Kogyo Kk Phosphor and light-emitting device
JP2013163727A (en) * 2012-02-09 2013-08-22 Denki Kagaku Kogyo Kk Phosphor and light-emitting device
JP2013171684A (en) * 2012-02-20 2013-09-02 Sharp Corp Lighting device
JP2013171687A (en) * 2012-02-20 2013-09-02 Sharp Corp Lighting device
JP2013171686A (en) * 2012-02-20 2013-09-02 Sharp Corp Lighting device
US8956038B2 (en) 2012-02-22 2015-02-17 Empire Technology Development Llc Lighting device having a light guide structure
JP2015028983A (en) * 2013-07-30 2015-02-12 シャープ株式会社 Wavelength conversion member and light-emitting device
JP2016058650A (en) * 2014-09-11 2016-04-21 パナソニックＩｐマネジメント株式会社 Light emission device, light source for illumination and luminaire
US9947840B2 (en) 2016-06-29 2018-04-17 Nichia Corporation Light emitting device and light source
US10741732B2 (en) 2018-01-31 2020-08-11 Nichia Corporation Light emitting device and light source
US11282990B2 (en) 2018-01-31 2022-03-22 Nichia Corporation Light emitting device and light source
JP2021518677A (en) * 2018-03-20 2021-08-02 ビーエイエスエフ・ソシエタス・エウロパエアＢａｓｆ Ｓｅ Yellow light emitting element
JP7250897B2 (en) 2018-03-20 2023-04-03 ビーエーエスエフ ソシエタス・ヨーロピア yellow light emitting element

Similar Documents

Publication Publication Date Title
JP2007088248A (en) Colored light emitting diode lamp, lighting apparatus for decoration, and color-display signing apparatus
JP4104013B2 (en) LIGHT EMITTING DEVICE AND LIGHTING DEVICE
JP4963705B2 (en) LIGHT EMITTING DEVICE AND LIGHTING DEVICE
JP4045298B2 (en) LIGHT EMITTING DEVICE AND LIGHTING DEVICE
JP3931239B2 (en) Light emitting device and lighting apparatus
TWI394818B (en) Illumination system comprising color deficiency compensating luminescent material
CN101044222B (en) Phospher, process for producing the same and luminescence apparatus
TWI417616B (en) Display device and lighting device for the same
US20070090381A1 (en) Semiconductor light emitting device
JP2008538652A (en) Lighting system including ceramic luminescence converter
JP6287268B2 (en) Light emitting device
JP6323177B2 (en) Semiconductor light emitting device
KR20080101752A (en) Fluorescent substance, manufacturing method thereof and luminous device
JP5100059B2 (en) Phosphor, method for producing the same, and light emitting device using the same
JP4234161B2 (en) Light emitting device and lighting apparatus
US8901591B2 (en) Light-emitting device
JP4070219B2 (en) LIGHTING DEVICE USING LIGHT EMITTING ELEMENT
JP6640753B2 (en) Phosphor composition and lighting fixture comprising the same
WO2014097802A1 (en) Fluorescent substance, light-emitting device, and illuminator

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080613

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20080703

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20101026

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101227

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20110621