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JP2007027421A - Led package and lighting device - Google Patents

Led package and lighting device Download PDF

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Publication number
JP2007027421A
JP2007027421A JP2005207602A JP2005207602A JP2007027421A JP 2007027421 A JP2007027421 A JP 2007027421A JP 2005207602 A JP2005207602 A JP 2005207602A JP 2005207602 A JP2005207602 A JP 2005207602A JP 2007027421 A JP2007027421 A JP 2007027421A
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Prior art keywords
led element
light
led
red
blue
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JP2005207602A
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Japanese (ja)
Inventor
Ryuji Tsuchiya
竜二 土屋
Masasane Takagi
将実 高木
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Toshiba Lighting and Technology Corp
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Harison Toshiba Lighting Corp
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Priority to JP2005207602A priority Critical patent/JP2007027421A/en
Priority to CN 200610105918 priority patent/CN1937222B/en
Priority to KR20060066103A priority patent/KR20070009453A/en
Priority to TW095125944A priority patent/TW200717865A/en
Publication of JP2007027421A publication Critical patent/JP2007027421A/en
Abandoned legal-status Critical Current

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    • 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

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  • Led Device Packages (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED package which can be employed as a light source of a back light of lighting of good color rendering properties and wide color reproducibility range. <P>SOLUTION: The LED package 1 packages a red LED element 3 of central wavelength of 600 to 680 nm, a blue LED element 2 of central wavelength of 430 to 480 nm having a light emitting area wider than the red LED element, and a fluorescent substance which is excited by the blue LED element and emits light of central wavelength of 530 to 590 nm. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ＬＥＤパッケージ及び照明装置に関する。   The present invention relates to an LED package and a lighting device.

一般に白色ＬＥＤは発光効率が高いが、照明用の光源として使用する際に環境光の影響で見た目の色味が大きく変化する演色性の問題があり、バックライト用の光源として使用する際には色再現範囲が狭いといった問題点があった。   In general, white LEDs have high luminous efficiency. However, when used as a light source for illumination, there is a problem of color rendering that the appearance color changes greatly due to the influence of ambient light. There was a problem that the color reproduction range was narrow.

このような問題点を解決する方法として、白色ＬＥＤを使用せずに、例えば、Ｒ、Ｇ、ＢのＬＥＤを組み合わせたり、ＵＶ（紫外線）のＬＥＤ素子と蛍光体を組み合わせたりして対応していた。しかし、このような方式では、発光効率が低い、コストが高い、混色が困難、制御が複雑等様々な問題点があった。   As a method for solving such problems, for example, R, G, B LEDs are combined, or UV (ultraviolet) LED elements and phosphors are combined without using white LEDs. It was. However, such a method has various problems such as low luminous efficiency, high cost, difficult color mixing, and complicated control.

また、前述の問題を解決するために、特開２００４−３２７４９２号公報（特許文献１）、特開２００４−３５６１１６号公報（特許文献２）では、例えば青色ＬＥＤと、赤色ＬＥＤと、青色ＬＥＤにより励起されて発光する蛍光体とを組み合わせたＬＥＤデバイスが提案されている。しかし実際に確認してみると、図７のグラフに示すように、ほぼ同一の出力（電流）で点灯すると、赤色発光が強くて白色発光とはならず、白色発光させるためには青色ＬＥＤの電流を増すか、赤色ＬＥＤの電流を減らすかする必要がある。ところが、青色ＬＥＤの電流を増した場合には、寿命が短くなる問題点があった。他方、赤色ＬＥＤの電流を減した場合には単体の発光量が小さくなるため、このＬＥＤデバイスをバックライト装置に光源として組込み所要量の明るさで液晶パネルを照らそうとすれば、多くの個数を必要とし、コスト及びスペース等に問題点があった。
特開２００４−３２７４９２号公報 特開２００４−３５６１１６号公報 Moreover, in order to solve the above-mentioned problem, in Japanese Unexamined Patent Application Publication No. 2004-327492 (Patent Document 1) and Japanese Unexamined Patent Application Publication No. 2004-356116 (Patent Document 2), for example, a blue LED, a red LED, and a blue LED are used. An LED device that combines a phosphor that emits light when excited is proposed. However, when actually confirmed, as shown in the graph of FIG. 7, when the light is turned on with substantially the same output (current), the red light emission is strong and the white light emission does not occur. It is necessary to increase the current or decrease the current of the red LED. However, when the current of the blue LED is increased, there is a problem that the lifetime is shortened. On the other hand, when the current of the red LED is reduced, the amount of light emitted from the single LED becomes small. Therefore, if this LED device is incorporated in a backlight device as a light source and a liquid crystal panel is illuminated with the required brightness, a large number There was a problem in cost and space.
JP 2004-327492 A JP 2004-356116 A

本発明は、上述したような従来技術の問題点に鑑みてなされたものであり、照明用の光源として用いた場合には安価で演色性が良い照明装置とすることができ、またバックライト用の光源として用いた場合にはカラー液晶パネルの色再現範囲を広くできるＬＥＤパッケージを提供することを目的とし、またそのようなＬＥＤパッケージを光源とした備えた照明装置を提供することを目的とする。   The present invention has been made in view of the above-described problems of the prior art, and when used as a light source for illumination, it can be an inexpensive lighting device with good color rendering, and for backlights. It is an object to provide an LED package that can widen the color reproduction range of a color liquid crystal panel when used as a light source, and to provide an illuminating device including such an LED package as a light source. .

請求項１の発明のＬＥＤパッケージは、中心波長が６００〜６８０ｎｍの赤色ＬＥＤ素子と、中心波長が４３０〜４８０ｎｍで、前記赤色ＬＥＤ素子よりも発光面積が広い青色ＬＥＤ素子と、前記青色ＬＥＤ素子により励起されて中心波長５３０〜５９０ｎｍの光を発光する蛍光体とを備えたことを特徴とするものである。   The LED package of the invention of claim 1 includes a red LED element having a center wavelength of 600 to 680 nm, a blue LED element having a center wavelength of 430 to 480 nm and a wider light emitting area than the red LED element, and the blue LED element. And a phosphor that emits light having a central wavelength of 530 to 590 nm when excited.

請求項２の発明は、請求項１のＬＥＤパッケージにおいて、単位面積当たりの発光量がほぼ等しい青色ＬＥＤ素子と赤色ＬＥＤ素子を備え、かつ前記青色ＬＥＤ素子として前記赤色ＬＥＤ素子よりも発光面積の大きいものを備えたことを特徴とするものである。   According to a second aspect of the present invention, in the LED package of the first aspect, a blue LED element and a red LED element having substantially the same amount of light emission per unit area are provided, and the blue LED element has a larger light emission area than the red LED element. It is characterized by having things.

請求項３の発明は、請求項１のＬＥＤパッケージにおいて、単位面積当たりの発光量がほぼ等しい青色ＬＥＤ素子と赤色ＬＥＤ素子を備え、かつ前記青色ＬＥＤ素子の素子数を前記赤色ＬＥＤ素子の素子数よりも多くしたことを特徴とするものである。   According to a third aspect of the present invention, in the LED package of the first aspect, a blue LED element and a red LED element having substantially the same light emission amount per unit area are provided, and the number of the blue LED elements is set to the number of the red LED elements. It is characterized by having more than.

請求項４の発明の照明装置は、請求項１〜３のＬＥＤパッケージの複数個を光源として備えたものである。   According to a fourth aspect of the present invention, there is provided a lighting device comprising a plurality of the LED packages according to the first to third aspects as light sources.

本発明のＬＥＤパッケージは、中心波長が６００〜６８０ｎｍの赤色ＬＥＤ素子と、中心波長が４３０〜４８０ｎｍで、赤色ＬＥＤ素子よりも発光面積が広い青色ＬＥＤ素子と、青色ＬＥＤ素子により励起されて中心波長５３０〜５９０ｎｍの光を発光する蛍光体とを備えているので、青色ＬＥＤ素子に対する単位面積当たりの電流を大きくしなくても、あるいは赤色ＬＥＤ素子に対する単位面積当たりの電流を小さくしなくても、定格通りの電流を給電しながらも青色光を多く発光させることができ、この結果として、照明用の光源として用いた場合には安価で演色性が良い照明装置とすることができ、またバックライト用の光源として用いた場合にはカラー液晶パネルの色再現範囲を広くできるＬＥＤパッケージを提供することができる。   The LED package of the present invention includes a red LED element having a center wavelength of 600 to 680 nm, a blue LED element having a center wavelength of 430 to 480 nm and a wider light emitting area than the red LED element, and a center wavelength excited by the blue LED element. And a phosphor that emits light of 530 to 590 nm, so even if the current per unit area for the blue LED element is not increased or the current per unit area for the red LED element is not decreased, While supplying a current as rated, it can emit a lot of blue light. As a result, when used as a light source for illumination, it can be an inexpensive lighting device with good color rendering, and a backlight. When used as a light source for an LED, an LED package capable of widening the color reproduction range of a color liquid crystal panel can be provided.

また本発明の照明装置は、上記ＬＥＤパッケージの複数個を光源として備えているので、これを照明用途とする場合には演色性が良い照明装置を得ることができ、また液晶バックライト用途とする場合には色再現範囲の広いバックライト装置を得ることができる。   Moreover, since the illuminating device of the present invention includes a plurality of the LED packages as light sources, when the illuminating device is used for illumination, an illuminating device with good color rendering can be obtained, and it is used for a liquid crystal backlight. In this case, a backlight device having a wide color reproduction range can be obtained.

以下、本発明の実施の形態を図に基づいて詳説する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

（第１の実施の形態）図１は本発明の第１の実施の形態のＬＥＤパッケージの上面図である。図１において、１はＬＥＤパッケージ、２は青色ＬＥＤ素子、３は赤色ＬＥＤ素子、４は封止樹脂、５ａ、５ｂは青色ＬＥＤ素子２に対する給電部、６ａ、６ｂは赤色ＬＥＤ素子３に対する給電部を表している。   (First Embodiment) FIG. 1 is a top view of an LED package according to a first embodiment of the present invention. In FIG. 1, 1 is an LED package, 2 is a blue LED element, 3 is a red LED element, 4 is a sealing resin, 5a and 5b are power supply units for the blue LED element 2, and 6a and 6b are power supply units for the red LED element 3. Represents.

ＬＥＤパッケージ１には、青色ＬＥＤ素子２及び、赤色ＬＥＤ素子３が実装されている。青色ＬＥＤ素子２は、素子寸法が一辺９００μｍのほぼ正方形であり、赤色ＬＥＤ素子３は素子寸法が一辺３００μｍのほぼ正方形である。一般的にＬＥＤ素子の大きさは、ＬＥＤに流す電流値によって大きさが異なり、本実施の形態では、青色ＬＥＤ素子２は、定格電流値が３５０ｍＡであり、赤色ＬＥＤの定格電流値は２０ｍＡである。ＬＥＤ素子に流すことのできる電流値は、ＬＥＤ発光層のＰＮ接合部の接合温度によって決まる。放熱構造次第では、小さい素子でも大電流を流すことは可能であるが、一般的には、電流密度すなわちＬＥＤのｐｎ接合部の面積で最大電流値が決まってくる。青色ＬＥＤ素子２は、給電部５ａ、５ｂに接続されており、また、赤色ＬＥＤ素子３は、給電部６ａ、６ｂに接続されている。ＬＥＤパッケージ１は、封止樹脂４で充填されており、封止樹脂４には、青色ＬＥＤ素子２の発光により励起され、緑色及び黄色に発光する蛍光体が混合されている。   A blue LED element 2 and a red LED element 3 are mounted on the LED package 1. The blue LED element 2 has a substantially square shape with an element size of 900 μm per side, and the red LED element 3 has a substantially square shape with a device size of 300 μm per side. In general, the size of the LED element varies depending on the current value flowing through the LED. In this embodiment, the blue LED element 2 has a rated current value of 350 mA, and the red LED has a rated current value of 20 mA. is there. The current value that can be passed to the LED element is determined by the junction temperature of the PN junction of the LED light emitting layer. Depending on the heat dissipation structure, a large current can flow even with a small element, but in general, the maximum current value is determined by the current density, that is, the area of the pn junction of the LED. The blue LED element 2 is connected to the power feeding units 5a and 5b, and the red LED element 3 is connected to the power feeding units 6a and 6b. The LED package 1 is filled with a sealing resin 4, and the sealing resin 4 is mixed with phosphors that are excited by light emission of the blue LED element 2 and emit green and yellow light.

本実施の形態のＬＥＤパッケージ１では、青色ＬＥＤ素子２は中心波長４３０〜４８０ｎｍで発光し、赤色ＬＥＤ素子３は中心波長６００〜６８０ｎｍで発光する。また、蛍光体は、青色ＬＥＤ素子２の発光する光により励起されて中心波長５３０〜５９０ｎｍの光を発光する。   In the LED package 1 of the present embodiment, the blue LED element 2 emits light with a central wavelength of 430 to 480 nm, and the red LED element 3 emits light with a central wavelength of 600 to 680 nm. The phosphor is excited by light emitted from the blue LED element 2 and emits light having a central wavelength of 530 to 590 nm.

本実施の形態のＬＥＤパッケージ１を定格電流にて点灯させた時の分光分布を図２に示す。分光分布から計算すると相関色温度は７０００Ｋ程度の白色発光であり、バックライト用光源として好適である。   FIG. 2 shows a spectral distribution when the LED package 1 of the present embodiment is lit at the rated current. When calculated from the spectral distribution, the correlated color temperature is white light emission of about 7000 K, which is suitable as a light source for backlight.

本実施の形態によれば、青色ＬＥＤ素子２と、赤色ＬＥＤ素子３と、青色ＬＥＤ素子２の発光により励起される蛍光体を具備し、実装してあるＬＥＤ素子の面積比が青色ＬＥＤ素子＞赤色ＬＥＤ素子であるＬＥＤパッケージを使用することで、照明用途としては演色性が良い照明装置が作製でき、液晶バックライト用途としては色再現範囲の広いバックライト装置が作製できる。   According to the present embodiment, the blue LED element 2, the red LED element 3, and the phosphor excited by the light emission of the blue LED element 2, the area ratio of the mounted LED elements is a blue LED element> By using an LED package that is a red LED element, an illumination device with good color rendering can be produced for illumination applications, and a backlight device with a wide color reproduction range can be produced for liquid crystal backlight applications.

（第２の実施の形態）図３は本発明の第２の実施の形態のＬＥＤパッケージの上面図である。尚、図１と同一の要素には同一の符号を用いて表している。   (Second Embodiment) FIG. 3 is a top view of an LED package according to a second embodiment of the present invention. The same elements as those in FIG. 1 are denoted by the same reference numerals.

本実施の形態のＬＥＤパッケージ１は、青色ＬＥＤ素子２が２個直列接続されており、また、別系列で赤色ＬＥＤ素子３が１個接続されている。青色ＬＥＤ素子２は給電部５ａ、５ｂに接続されており、また、赤色ＬＥＤ素子３は給電部６ａ、６ｂに接続されている。両方のＬＥＤ素子２、３は封止樹脂４で共に充填封止されている。封止樹脂４には、青色ＬＥＤ素子３の発光により励起され、緑色及び黄色に発光する蛍光体が混合されている。青色ＬＥＤ素子２の数と赤色ＬＥＤ素子３の数の比は、図示では２：１である。この素子数の比は、各ＬＥＤ素子２、３の発光効率によって決定されるが、両素子の電流密度をほぼ同等にして、青色光の全発光量が赤色光の全発光量よりも大きくなる比数に設定する。   In the LED package 1 of the present embodiment, two blue LED elements 2 are connected in series, and one red LED element 3 is connected in another series. The blue LED element 2 is connected to the power feeding parts 5a and 5b, and the red LED element 3 is connected to the power feeding parts 6a and 6b. Both LED elements 2 and 3 are filled and sealed with a sealing resin 4. The sealing resin 4 is mixed with phosphors that are excited by the light emitted from the blue LED element 3 and emit light in green and yellow. The ratio of the number of blue LED elements 2 to the number of red LED elements 3 is 2: 1 in the figure. The ratio of the number of elements is determined by the luminous efficiency of the LED elements 2 and 3, but the current density of both elements is substantially equal, and the total emission amount of blue light becomes larger than the total emission amount of red light. Set to ratio.

本実施の形態のＬＥＤパッケージ１を点灯させた時の分光分布を図４に示す。分光分布から計算すると相関色温度は７０００Ｋ程度の白色発光であり、バックライト用光源として好適である。   FIG. 4 shows the spectral distribution when the LED package 1 of the present embodiment is turned on. When calculated from the spectral distribution, the correlated color temperature is white light emission of about 7000 K, which is suitable as a light source for backlight.

本実施の形態によれば、青色ＬＥＤ素子２と、赤色ＬＥＤ素子３と、青色ＬＥＤ素子２の発光により励起されて、緑色及び黄色に発光する蛍光体を具備し、パッケージに実装してある青色ＬＥＤ素子２と赤色ＬＥＤ３の数量比が、青色ＬＥＤ＞赤色ＬＥＤであるＬＥＤパッケージ１を光源として使用することで、照明用途としては演色性が良い照明装置が作製でき、また液晶バックライト用途としては色再現範囲の広いバックライトが作製できる。   According to the present embodiment, the blue LED element 2, the red LED element 3, and the phosphor that is excited by the light emission of the blue LED element 2 to emit green and yellow light and is mounted on the package. By using the LED package 1 in which the quantity ratio of the LED element 2 and the red LED 3 is blue LED> red LED as a light source, an illumination device with good color rendering can be produced as an illumination application, and as a liquid crystal backlight application A backlight with a wide color reproduction range can be produced.

（第３の実施の形態）図５は本発明の第３の実施の形態の照明装置としてのバックライト装置の構造を示す図である。バックライト装置１０は、エッジライト方式で、第１の実施の形態又は第２の実施の形態のＬＥＤパッケージ１をＬＥＤアレイ１２上に並べて、導光板１１の長辺の片側に配置してある。ＬＥＤパッケージ１から発光した光は導光板１１に入光し、導光板１１内で全反射を繰り返しながら進行する。導光板１１の裏面のパターン１１ａに光が当たると、光路が曲げられて全反射の条件が崩れて発光面１１ｂから出射する。   (Third Embodiment) FIG. 5 is a view showing the structure of a backlight device as a lighting device according to a third embodiment of the present invention. The backlight device 10 is an edge light type, and the LED packages 1 of the first embodiment or the second embodiment are arranged on the LED array 12 and arranged on one side of the long side of the light guide plate 11. Light emitted from the LED package 1 enters the light guide plate 11 and travels while repeating total reflection in the light guide plate 11. When light hits the pattern 11a on the back surface of the light guide plate 11, the light path is bent and the conditions of total reflection are broken, and the light is emitted from the light emitting surface 11b.

図６はＬＥＤアレイ１２の構造を示す図である。各ＬＥＤパッケージ１間の青色ＬＥＤ素子２同士及び赤色ＬＥＤ素子３同士は直列接続し、青色ＬＥＤ素子２、赤色ＬＥＤ素子３は別々の給電端子１２１、１２２に接続され、別駆動させる。別駆動させることで、バックライト装置上の色度の調整が可能となる。また、図示していないが、例えば基板上に温度センサーを設け、温度に応じてＬＥＤの電流を調整する回路と組み合わせたり、バックライト装置の輝度・色度をモニターするカラーセンサーを用いて周囲環境、寿命中で変化する輝度・色度を一定に保つようにコントロールする回路と組合せてもよい。ＬＥＤパッケージ１の数が多いときは、青色ＬＥＤ素子２と赤色ＬＥＤ素子３を別接続する限りは、直列接続と並列接続の組合せとしてもよい。   FIG. 6 is a diagram showing the structure of the LED array 12. The blue LED elements 2 and the red LED elements 3 between the LED packages 1 are connected in series, and the blue LED element 2 and the red LED element 3 are connected to separate power supply terminals 121 and 122 and driven separately. By separately driving, the chromaticity on the backlight device can be adjusted. Although not shown, for example, a temperature sensor is provided on the substrate and combined with a circuit that adjusts the LED current according to the temperature, or a color sensor that monitors the luminance and chromaticity of the backlight device is used. Further, it may be combined with a circuit for controlling the luminance and chromaticity changing during the life to be constant. When the number of LED packages 1 is large, as long as the blue LED element 2 and the red LED element 3 are separately connected, a combination of series connection and parallel connection may be used.

本実施の形態のバックライト装置では、中心波長が６００〜６８０ｎｍの赤色ＬＥＤ素子３と、中心波長が４３０〜４８０ｎｍで赤色ＬＥＤ素子３よりも発光面積が広い青色ＬＥＤ素子２と、青色ＬＥＤ素子２により励起されて中心波長５３０〜５９０ｎｍの光を発光する蛍光体とを備えたＬＥＤパッケージ１を複数個、光源として採用しており、これらのＬＥＤパッケージ１は照明用途としては演色性が良い照明装置が作製でき、また液晶バックライト用途としては色再現範囲の広いバックライトが作製できるものであるであるので、本実施の形態のバックライト装置は色再現範囲の広いバックライトとしてなる。   In the backlight device of the present embodiment, the red LED element 3 having a center wavelength of 600 to 680 nm, the blue LED element 2 having a center wavelength of 430 to 480 nm and a wider light emitting area than the red LED element 3, and the blue LED element 2 A plurality of LED packages 1 each including a phosphor that emits light having a central wavelength of 530 to 590 nm when excited by the light source are employed as light sources, and these LED packages 1 have a good color rendering property for illumination applications. Since a backlight with a wide color reproduction range can be produced for use as a liquid crystal backlight, the backlight device of this embodiment is a backlight with a wide color reproduction range.

尚、上記第３の実施の形態では照明装置としてエッジライト方式のバックライト装置を示したが、第１、第２の実施の形態のＬＥＤパッケージ１を多数個バックライトケースの底面に配置した直下型バックライト装置を作製することもできる。また、白色照明装置とすることにより、演色性に優れた照明が実現できる。   In the third embodiment, an edge light type backlight device is shown as the lighting device. However, a plurality of LED packages 1 according to the first and second embodiments are arranged directly below the bottom surface of the backlight case. A mold backlight device can also be manufactured. Further, by using a white illumination device, illumination with excellent color rendering can be realized.

本発明の第１の実施の形態のＬＥＤパッケージの構造を示す上面図。The top view which shows the structure of the LED package of the 1st Embodiment of this invention. 本発明の第１の実施の形態のＬＥＤパッケージを定格電流にて点灯させた時の分光分布を示すグラフ。The graph which shows the spectral distribution when the LED package of the 1st Embodiment of this invention is made to light with a rated current. 本発明の第２の実施の形態のＬＥＤパッケージの構造を示す上面図。The top view which shows the structure of the LED package of the 2nd Embodiment of this invention. 本発明の第２の実施の形態のＬＥＤパッケージを定格電流にて点灯させた時の分光分布を示すグラフ。The graph which shows the spectral distribution when the LED package of the 2nd Embodiment of this invention is made to light with a rated current. 本発明の第３の実施の形態のバックライト装置の構造を示す分解斜視図。The disassembled perspective view which shows the structure of the backlight apparatus of the 3rd Embodiment of this invention. 本発明の第３の実施の形態のバックライト装置におけるＬＥＤアレイの構造を示す正面図。The front view which shows the structure of the LED array in the backlight apparatus of the 3rd Embodiment of this invention. 従来のＬＥＤパッケージを定格電流にて点灯させた時の分光分布を示すグラフ。The graph which shows the spectral distribution when making the conventional LED package light at a rated current.

符号の説明Explanation of symbols

１ ＬＥＤパッケージ
２ 青色ＬＥＤ素子
３ 赤色ＬＥＤ素子
４ 封止樹脂
５ａ、５ｂ、６ａ、６ｂ 給電部
１０ バックライト装置
１１ 導光板
１２ ＬＥＤアレイ

DESCRIPTION OF SYMBOLS 1 LED package 2 Blue LED element 3 Red LED element 4 Sealing resin 5a, 5b, 6a, 6b Power supply part 10 Backlight apparatus 11 Light guide plate 12 LED array

Claims (4)

中心波長が６００〜６８０ｎｍの赤色ＬＥＤ素子と、中心波長が４３０〜４８０ｎｍで、前記赤色ＬＥＤ素子よりも発光面積が広い青色ＬＥＤ素子と、前記青色ＬＥＤ素子により励起されて中心波長５３０〜５９０ｎｍの光を発光する蛍光体とを備えたことを特徴とするＬＥＤパッケージ。   A red LED element having a center wavelength of 600 to 680 nm, a blue LED element having a center wavelength of 430 to 480 nm and a light emitting area wider than the red LED element, and light having a center wavelength of 530 to 590 nm excited by the blue LED element An LED package comprising: a phosphor that emits light. 単位面積当たりの発光量がほぼ等しい青色ＬＥＤ素子と赤色ＬＥＤ素子を備え、かつ前記青色ＬＥＤ素子として前記赤色ＬＥＤ素子よりも発光面積の大きいものを備えたことを特徴とする請求項１に記載のＬＥＤパッケージ。   2. The blue LED element and the red LED element having substantially the same amount of light emission per unit area are provided, and the blue LED element has a light emitting area larger than that of the red LED element. LED package. 単位面積当たりの発光量がほぼ等しい青色ＬＥＤ素子と赤色ＬＥＤ素子を備え、かつ前記青色ＬＥＤ素子の素子数を前記赤色ＬＥＤ素子の素子数よりも多くしたことを特徴とする請求項１に記載のＬＥＤパッケージ。   2. The blue LED element and the red LED element having substantially the same amount of light emission per unit area are provided, and the number of the blue LED elements is larger than the number of the red LED elements. LED package. 請求項１〜３のいずれかに記載のＬＥＤパッケージの複数個を光源として備えたことを特徴とする照明装置。

A lighting device comprising a plurality of the LED packages according to claim 1 as a light source.

JP2005207602A 2005-07-15 2005-07-15 Led package and lighting device Abandoned JP2007027421A (en)

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KR20060066103A KR20070009453A (en) 2005-07-15 2006-07-14 Led package and illuminating device
TW095125944A TW200717865A (en) 2005-07-15 2006-07-14 Light emitting diode package and lighting apparatus

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008123413A1 (en) * 2007-03-29 2008-10-16 Harison Toshiba Lighting Corporation Hollow planar illuminating apparatus
JP2009192772A (en) * 2008-02-14 2009-08-27 Sony Corp Illuminating device and display device
JP2010182724A (en) * 2009-02-03 2010-08-19 Mitsubishi Electric Corp Light-emitting device
JP2011192704A (en) * 2010-03-12 2011-09-29 Toshiba Lighting & Technology Corp Light emitting device and lighting device
EP2597353A1 (en) * 2010-07-20 2013-05-29 Shanghai Yaming Lighting Co., Ltd. Led integrated packaging light source module
US8820950B2 (en) 2010-03-12 2014-09-02 Toshiba Lighting & Technology Corporation Light emitting device and illumination apparatus
JP2015128088A (en) * 2013-12-27 2015-07-09 日亜化学工業株式会社 Semiconductor light source device
US9184353B2 (en) 2008-03-03 2015-11-10 Sharp Kabushiki Kaisha Light-emitting device
WO2019054447A1 (en) * 2017-09-14 2019-03-21 株式会社グリーンウェル White led element in which blue light is reduced, and white led unit in which plurality of said white led elements are arrayed and mounted on wiring substrate

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11162233A (en) * 1997-11-25 1999-06-18 Matsushita Electric Works Ltd Light source device
JP2004055772A (en) * 2002-07-18 2004-02-19 Citizen Electronics Co Ltd Led light emitting device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4274843B2 (en) * 2003-04-21 2009-06-10 シャープ株式会社 LED device and mobile phone device, digital camera and LCD display device using the same
JP4458804B2 (en) * 2003-10-17 2010-04-28 シチズン電子株式会社 White LED
CN1610134A (en) * 2003-10-23 2005-04-27 郑子淇 Illuminating device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11162233A (en) * 1997-11-25 1999-06-18 Matsushita Electric Works Ltd Light source device
JP2004055772A (en) * 2002-07-18 2004-02-19 Citizen Electronics Co Ltd Led light emitting device

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KR20070009453A (en) 2007-01-18
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