JP2013064033A - Light-emitting device - Google Patents

Light-emitting device Download PDF

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JP2013064033A
JP2013064033A JP2011201997A JP2011201997A JP2013064033A JP 2013064033 A JP2013064033 A JP 2013064033A JP 2011201997 A JP2011201997 A JP 2011201997A JP 2011201997 A JP2011201997 A JP 2011201997A JP 2013064033 A JP2013064033 A JP 2013064033A
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light
phosphor
emitting device
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Naoko Takei
尚子 竹井
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Panasonic Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

PROBLEM TO BE SOLVED: To provide a light-emitting device that can further obtain properties other than high color rendering properties.SOLUTION: The light-emitting device 10 includes: an LED light source 12 for emitting blue light having a peak wavelength at a luminous wavelength of 420 to 480 nm; and a plurality of phosphors 13 and 14 for emitting a light subjected to wavelength conversion by being excited with the light emission of the LED light source 12. One of phosphors 13 and 14 contains a blue-green light from MSi(O, X)N:Eu(Sr, Ba, Ca, X=Cl, Br). White light thus obtained has a spectrum of 480 to 520 nm and a peak wavelength.

Description

本発明は、発光ダイオードを有する発光装置に関する。   The present invention relates to a light emitting device having a light emitting diode.

従来より、発光ダイオードと、発光ダイオードからの光の少なくとも一部を波長変換する第１蛍光体および第２蛍光体とを少なくとも有する発光装置が知られている（例えば、特許文献１参照）。
特許文献１は、第１蛍光体が、酸窒化物蛍光体を有し、酸窒化物蛍光体と共に用いられる第２蛍光体が含有されており、第２蛍光体は、励起光源からの光および酸窒化物蛍光体からの光の少なくとも一部を波長変換し、可視光領域に発光ピーク波長を有する。 2. Description of the Related Art Conventionally, a light emitting device having at least a light emitting diode and a first phosphor and a second phosphor that convert the wavelength of at least part of light from the light emitting diode is known (for example, see Patent Document 1).
In Patent Document 1, the first phosphor has an oxynitride phosphor, and a second phosphor used together with the oxynitride phosphor is contained. The second phosphor includes light from an excitation light source and At least a part of the light from the oxynitride phosphor is wavelength-converted and has an emission peak wavelength in the visible light region.

特許文献１は、第２蛍光体が、青色系領域から、緑色系、黄色系、赤色系領域までに少なくとも１以上の発光ピーク波長を有する。
特許文献１は、励起光源の有する発光ピーク波長から、酸窒化物蛍光体の有する発光ピーク波長若しくは第２蛍光体の有する発光ピーク波長までの中間の発光色を有する。 In Patent Document 1, the second phosphor has at least one emission peak wavelength from the blue region to the green, yellow, and red regions.
Patent Document 1 has an intermediate emission color from the emission peak wavelength of the excitation light source to the emission peak wavelength of the oxynitride phosphor or the emission peak wavelength of the second phosphor.

また、従来より、光源として４００ｎｍのピーク発光波長をもつＩｎＧａＮタイプの発光ダイオードを用いた発光装置が知られている（例えば、特許文献２参照）。
特許文献２は、ＬＥＤの１次ＵＶ放射が約４００ｎｍであり、２次放射は約５００ｎｍで発光するＢａＳｉ２Ｏ２Ｎ２：Ｅｕを用いた第１蛍光体と、オレンジレッドを発する窒化珪酸塩を用いた第２蛍光体により発せられる。 Conventionally, a light emitting device using an InGaN type light emitting diode having a peak emission wavelength of 400 nm as a light source is known (see, for example, Patent Document 2).
Patent Document 2 discloses that a first phosphor using BaSi 2 O 2 N 2 : Eu that emits LED at about 400 nm in primary UV radiation and about 500 nm in secondary radiation, and oxynitride silicate emitting orange red. Emitted by the second phosphor using

特許第４４４２１０１号公報（図１、段落００４２）Japanese Patent No. 4442101 (FIG. 1, paragraph 0042) 特許第３８５１３３１号公報（図１、段落００１５、００１６）Japanese Patent No. 385331 (FIG. 1, paragraphs 0015 and 0016)

特許文献１は、紫外から可視光領域の励起光源により励起され、波長変換される青緑色系から黄色系に発光色を有する蛍光体を用いることができる。
特許文献２は、新しい発光材料を提供できる。 Patent Document 1 can use a phosphor having an emission color from blue-green to yellow that is excited by an excitation light source in the ultraviolet to visible light region and wavelength-converted.
Patent Document 2 can provide a new light-emitting material.

ところで、青色ＬＥＤ光源と、青色ＬＥＤ光源の発光により励起発光する黄色蛍光体（もしくは、緑色蛍光体＋赤色蛍光体)を用いることにより、白色ＬＥＤ照明を生成する発光装置が提案されている。
このような従来の発光装置は、青色ＬＥＤ光源と、黄色蛍光体との組み合わせが演色性に乏しいことを改善するために提案された。 By the way, a light emitting device that generates white LED illumination by using a blue LED light source and a yellow phosphor (or green phosphor + red phosphor) that emits light by light emission from the blue LED light source has been proposed.
Such a conventional light emitting device has been proposed to improve that the combination of a blue LED light source and a yellow phosphor has poor color rendering properties.

図４に示すように、このような従来の発光装置は、青色ＬＥＤ光源と、緑色蛍光体と、赤色蛍光体の組合せを適用している。
このような従来の発光装置は、青色ＬＥＤ光源からの青色光である原励起スペクトルＡ１０が４５０ｎｍ付近で最大の１００％の発光効率となる。
これに対して、このような従来の発光装置は、緑色蛍光体により励起される緑色光である励起スペクトルＡ１１が５５０ｎｍ付近で６０％の発光効率となる。 As shown in FIG. 4, such a conventional light emitting device uses a combination of a blue LED light source, a green phosphor, and a red phosphor.
In such a conventional light emitting device, the original excitation spectrum A10, which is blue light from a blue LED light source, has a maximum light emission efficiency of 100% around 450 nm.
On the other hand, in such a conventional light emitting device, the excitation spectrum A11 which is green light excited by the green phosphor has a light emission efficiency of 60% around 550 nm.

さらに、このような従来の発光装置は、赤色蛍光体により励起される赤色光である励起スペクトルＡ１２が６５０ｎｍ付近で６０％の発光効率となる。
そのため、このような従来の発光装置は、４５０ｎｍ付近で最大の１００％の発光効率となっている青色光が強くなって、目への刺激が多い。
従って、このような従来の発光装置は、演色性の向上に加えてさらなる特性を得ることが望まれている。 Further, in such a conventional light emitting device, the excitation spectrum A12 which is red light excited by the red phosphor has a light emission efficiency of 60% around 650 nm.
Therefore, in such a conventional light emitting device, blue light having a maximum light emission efficiency of 100% near 450 nm becomes strong, and there is a lot of irritation to the eyes.
Therefore, it is desired that such a conventional light emitting device obtains further characteristics in addition to the improvement in color rendering.

本発明は、前述した課題を解決するためになされたものであり、その目的は、高演色性に加えてさらなる特性を取得できる発光装置を提供することにある。   SUMMARY An advantage of some aspects of the invention is to provide a light-emitting device that can acquire further characteristics in addition to high color rendering properties.

本発明に係る発光装置は、発光波長が４２０ｎｍ〜４８０ｎｍにピーク波長を有する青色光を放射するＬＥＤ光源と、前記ＬＥＤ光源の発光により励起して波長変換した光を放射する複数の蛍光体とから構成され、前記蛍光体に、ＭＳｉ２（Ｏ，Ｘ）２Ｎ２：Ｅｕ（Ｓｒ，Ｂａ，Ｃａ、Ｘ＝Ｃｌ，Ｂｒ）からの青緑光が含まれており、得られる白色光のスペクトルが、４８０ｎｍ〜５２０ｎｍにピーク波長を有する。 A light-emitting device according to the present invention includes an LED light source that emits blue light having a peak wavelength of 420 nm to 480 nm, and a plurality of phosphors that emit light that has been wavelength-converted by being excited by the light emission of the LED light source. And the phosphor contains blue-green light from MSi 2 (O, X) 2 N 2 : Eu (Sr, Ba, Ca, X = Cl, Br), and the spectrum of white light obtained is It has a peak wavelength at 480 nm to 520 nm.

本発明に係る発光装置は、前記蛍光体のうちの一方は、前記ＬＥＤ光源に対して他方の前記蛍光体よりも離れて配置される。   In the light emitting device according to the present invention, one of the phosphors is arranged farther from the other phosphor than the LED light source.

本発明に係る発光装置によれば、高演色性に加えてさらなる特性を取得できるという効果を奏する。   According to the light emitting device of the present invention, there is an effect that further characteristics can be acquired in addition to high color rendering properties.

本発明に係る一実施形態の発光装置の積層時の垂直断面図1 is a vertical cross-sectional view of a light emitting device according to an embodiment of the present invention when stacked. 本発明に係る一実施形態の発光装置の封止後の垂直断面図The vertical sectional view after sealing of the light emitting device of one embodiment concerning the present invention. 本発明に係る一実施形態の発光装置のスペクトル特性図1 is a spectral characteristic diagram of a light emitting device according to an embodiment of the present invention. 従来の発光装置のスペクトル特性図Spectral characteristics of conventional light emitting device

以下、本発明に係る一実施形態の発光装置について図面を参照して説明する。
本発明者は、ＭＳｉ２（Ｏ，Ｘ）２Ｎ２：Ｅｕ（Ｓｒ，Ｂａ，Ｃａ、Ｘ＝Ｃｌ，Ｂｒ）がカチオンＭに応じて青緑色光から橙色光を放射することが可能であり、高い発光効率が得られることに着目した。
そして、この蛍光体を含めた白色ＬＥＤ照明を作製したところ、得られる白色光のスペクトルには、この蛍光体からの発光によるピークが含まれ、その特徴により、高演色性に加えてさらなる特性が現れることを見出した。 Hereinafter, a light emitting device according to an embodiment of the present invention will be described with reference to the drawings.
The present inventor has, MSi 2 (O, X) 2 N 2: Eu (Sr, Ba, Ca, X = Cl, Br) is capable of emitting orange light from the blue-green light in accordance with the cation M It was noted that high luminous efficiency can be obtained.
And when white LED illumination including this phosphor was produced, the spectrum of white light obtained includes a peak due to light emission from this phosphor. Due to its characteristics, in addition to high color rendering properties, there are additional characteristics. I found it to appear.

以下、本発明に係る一実施形態の発光装置について図面を参照して説明する。
図１に示すように、本発明に係る一実施形態の発光装置１０は、基板１１と、ＬＥＤチップ１２と、一方の蛍光体である第１蛍光体１３と、他方の蛍光体である第２蛍光体１４とから構成される。
第１蛍光体１３は、ＭＳｉ２（Ｏ，Ｘ）２Ｎ２：Ｅｕ（Ｓｒ，Ｂａ，Ｃａ、Ｘ＝Ｃｌ，Ｂｒ）からの青緑光が含まれている。
第２蛍光体１４は、緑色蛍光体、黄色蛍光体および赤色蛍光体である。 Hereinafter, a light emitting device according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a light emitting device 10 according to an embodiment of the present invention includes a substrate 11, an LED chip 12, a first phosphor 13 that is one phosphor, and a second phosphor that is the other phosphor. And a phosphor 14.
The first phosphor 13 contains blue-green light from MSi 2 (O, X) 2 N 2 : Eu (Sr, Ba, Ca, X = Cl, Br).
The second phosphor 14 is a green phosphor, a yellow phosphor, and a red phosphor.

発光装置１０は、積層時に、基板１１上にＬＥＤチップ１２が載置され、このＬＥＤチップ１２上に、第２蛍光体１４がシリコーン樹脂である透明樹脂等のバインダーにより保持される。
次に、第２蛍光体１４上に、第１蛍光体１３がシリコーン樹脂である透明樹脂等のバインダーにより保持される。 In the light emitting device 10, the LED chip 12 is placed on the substrate 11 when stacked, and the second phosphor 14 is held on the LED chip 12 by a binder such as a transparent resin that is a silicone resin.
Next, the first phosphor 13 is held on the second phosphor 14 by a binder such as a transparent resin that is a silicone resin.

図２に示すように、発光装置１０は、封止時に、基板１１上にＬＥＤチップ１２が載置され、このＬＥＤチップ１２を囲んで第２蛍光体１４が封止され、第２蛍光体１４を囲んで第１蛍光体１３が封止される。
第１蛍光体１３は、ＬＥＤチップ１２に対して第２蛍光体１４よりも離れた位置に封止されている。
従って、第２蛍光体１４による光成分の再吸収を抑制できる。 As shown in FIG. 2, when the light emitting device 10 is sealed, the LED chip 12 is placed on the substrate 11, the second phosphor 14 is sealed around the LED chip 12, and the second phosphor 14. And the first phosphor 13 is sealed.
The first phosphor 13 is sealed at a position farther from the LED chip 12 than the second phosphor 14.
Therefore, reabsorption of the light component by the second phosphor 14 can be suppressed.

次に、発光装置１０のスペクトル特性について説明する。
図３に示すように、発光装置１０のスペクトル特性は、ＬＥＤチップ１２からの青色光である原励起スペクトルＡ１が４５０ｎｍ付近において最大の１００％の発光効率となる。
このとき、第１蛍光体１３により励起される緑色光である励起スペクトルＡ２が５２０ｎｍ付近において最大の１００％の発光効率となる。
そして、第２蛍光体１４により励起される赤色光である励起スペクトルＡ３は、６５０ｎｍ付近において９０％の発光効率である。 Next, the spectral characteristics of the light emitting device 10 will be described.
As shown in FIG. 3, the spectral characteristics of the light emitting device 10 have a maximum light emission efficiency of 100% when the original excitation spectrum A1 which is blue light from the LED chip 12 is around 450 nm.
At this time, the excitation spectrum A2, which is green light excited by the first phosphor 13, has a maximum luminous efficiency of 100% in the vicinity of 520 nm.
The excitation spectrum A3, which is red light excited by the second phosphor 14, has a light emission efficiency of 90% near 650 nm.

つまり、発光装置１０は、５２０ｎｍ付近において最大の１００％の発光効率を有する緑色光が、４５０ｎｍ付近において最大の１００％の発光効率を有する青色光にシフトされている。
従って、発光装置１０は、得られる白色光のスペクトルが、４８０ｎｍ〜５２０ｎｍにピーク波長を有するものとなる。 That is, in the light emitting device 10, green light having the maximum 100% light emission efficiency near 520 nm is shifted to blue light having the maximum 100% light emission efficiency near 450 nm.
Therefore, in the light emitting device 10, the spectrum of white light obtained has a peak wavelength at 480 nm to 520 nm.

通常、白色光を得るために、ＬＥＤチップ１２からの青色光の一部は外部に取り出される。このＬＥＤチップ１２から放射される短波長光は、光子エネルギーが大きいために、目に入ると損傷を及ぼすことが懸念される。
そこで、発光装置１０は、ＭＳｉ２（Ｏ，Ｘ）２Ｎ２：Ｅｕの第１蛍光体１３を適用することにより、光子エネルギーの大きい青色光の一部をシフトさせて青緑蛍光体からの発光に変換している。
従って、発光装置１０は、得られる白色光が目への影響を低減できるものとなる。 Usually, in order to obtain white light, a part of blue light from the LED chip 12 is extracted outside. Since the short wavelength light emitted from the LED chip 12 has a large photon energy, there is a concern that it may be damaged if it enters the eye.
Therefore, the light emitting device 10 applies a first phosphor 13 of MSi 2 (O, X) 2 N 2 : Eu to shift a part of blue light having a large photon energy, thereby causing the light from the blue-green phosphor. It is converted to luminescence.
Therefore, the light emitting device 10 can reduce the influence of the obtained white light on the eyes.

以上、説明した本発明に係る一実施形態の発光装置１０によれば、ＭＳｉ２（Ｏ，Ｘ）２Ｎ２：Ｅｕの第１蛍光体１３により、光子エネルギーの大きい青色光の一部をシフトさせて青緑蛍光体からの発光に変換している。
従って、発光装置１０によれば、高演色性に加えて得られる白色光が目への影響を低減できる。 As described above, according to the light emitting device 10 according to the embodiment of the present invention described above, a part of blue light having a large photon energy is shifted by the first phosphor 13 of MSi 2 (O, X) 2 N 2 : Eu. It is converted into light emission from blue-green phosphor.
Therefore, according to the light emitting device 10, white light obtained in addition to high color rendering can reduce the influence on the eyes.

また、一実施形態の発光装置１０によれば、第１蛍光体１３がＬＥＤチップ１２に対して第２蛍光体１４よりも離れた位置に封止されているために、第２蛍光体１４による光成分の再吸収を抑制できる。   Further, according to the light emitting device 10 of the embodiment, since the first phosphor 13 is sealed at a position away from the second phosphor 14 with respect to the LED chip 12, the second phosphor 14 is used. Reabsorption of light components can be suppressed.

なお、本発明の発光装置において基板等は、前述した一実施形態に限定されるものでなく、適宜な変形や改良等が可能である。   Note that the substrate and the like in the light emitting device of the present invention are not limited to the above-described embodiment, and appropriate modifications and improvements can be made.

１０ 発光装置
１２ ＬＥＤチップ（ＬＥＤ光源）（発光ダイオード）
１３ 第１蛍光体１３（一方の蛍光体）
１４ 第２蛍光体１４（他方の蛍光体） 10 Light Emitting Device 12 LED Chip (LED Light Source) (Light Emitting Diode)
13 First phosphor 13 (one phosphor)
14 Second phosphor 14 (the other phosphor)

Claims (2)

発光波長が４２０ｎｍ〜４８０ｎｍにピーク波長を有する青色光を放射するＬＥＤ光源と、
前記ＬＥＤ光源の発光により励起して波長変換した光を放射する複数の蛍光体とから構成され、
前記蛍光体のうちの一方に、ＭＳｉ２（Ｏ，Ｘ）２Ｎ２：Ｅｕ（Ｓｒ，Ｂａ，Ｃａ、Ｘ＝Ｃｌ，Ｂｒ）からの青緑光が含まれており、得られる白色光のスペクトルが、４８０ｎｍ〜５２０ｎｍにピーク波長を有する発光装置。 An LED light source that emits blue light having a peak wavelength at an emission wavelength of 420 nm to 480 nm;
It is composed of a plurality of phosphors that emit light that has been excited by the light emission of the LED light source and wavelength-converted,
One of the phosphors contains blue-green light from MSi 2 (O, X) 2 N 2 : Eu (Sr, Ba, Ca, X = Cl, Br), and the resulting white light spectrum. Is a light emitting device having a peak wavelength at 480 nm to 520 nm. 請求項１に記載の発光装置において、
前記蛍光体のうちの一方は、前記ＬＥＤ光源に対して他方の前記蛍光体よりも離れて配置される発光装置。 The light-emitting device according to claim 1.
One of the phosphors is a light-emitting device arranged farther than the other phosphor with respect to the LED light source.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005530917A (en) * 2002-09-24 2005-10-13 オスラム　オプト　セミコンダクターズ　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング Luminescent material, for example for LED
JP2009206459A (en) * 2008-02-29 2009-09-10 Sharp Corp Color conversion member and light-emitting apparatus using the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005530917A (en) * 2002-09-24 2005-10-13 オスラム　オプト　セミコンダクターズ　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング Luminescent material, for example for LED
JP2009206459A (en) * 2008-02-29 2009-09-10 Sharp Corp Color conversion member and light-emitting apparatus using the same

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