JP2012099545A5 - - Google Patents

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JP2012099545A5
JP2012099545A5 JP2010243812A JP2010243812A JP2012099545A5 JP 2012099545 A5 JP2012099545 A5 JP 2012099545A5 JP 2010243812 A JP2010243812 A JP 2010243812A JP 2010243812 A JP2010243812 A JP 2010243812A JP 2012099545 A5 JP2012099545 A5 JP 2012099545A5
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light emitting
holes
light
width
emitting device
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JP2010243812A
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JP5648422B2 (en
JP2012099545A (en
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Priority claimed from JP2010243812A external-priority patent/JP5648422B2/en
Priority to JP2010243812A priority Critical patent/JP5648422B2/en
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Priority to EP11186792.5A priority patent/EP2448028B1/en
Priority to US13/283,415 priority patent/US8759124B2/en
Priority to CN201110337731.1A priority patent/CN102468410B/en
Publication of JP2012099545A publication Critical patent/JP2012099545A/en
Publication of JP2012099545A5 publication Critical patent/JP2012099545A5/ja
Priority to US14/275,331 priority patent/US9076948B2/en
Publication of JP5648422B2 publication Critical patent/JP5648422B2/en
Application granted granted Critical
Priority to US14/731,290 priority patent/US9276181B2/en
Priority to US14/988,319 priority patent/US10741729B2/en
Priority to US16/920,243 priority patent/US11626543B2/en
Priority to US18/181,962 priority patent/US11876153B2/en
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また、特許文献2および特許文献3には、平坦な基板上に発光素子を実装した発光装置が提案されている。特許文献2に記載される発光装置910を図13に示す。発光装置910は、発光素子912の上面に発光素子912からの光を波長変換する蛍光体を含む光透過性部材913を有し、発光素子912および光透過性部材913の側面が光反射性材料914によって被覆されている。 Patent Documents 2 and 3 propose light emitting devices in which light emitting elements are mounted on a flat substrate. A light-emitting device 910 described in Patent Document 2 is shown in FIG. The light emitting device 910 has a light transmitting member 913 including a phosphor that converts the wavelength of the light from the light emitting element 912 on the upper surface of the light emitting element 912, a side light reflective material of the light emitting element 912 and the light transmitting member 913 914 is covered.

図1は、実施の形態1に係る発光装置を示す模式斜視図である。FIG. 1 is a schematic perspective view showing the light emitting device according to Embodiment 1. FIG. 図2は、実施の形態1に係る発光装置を示す模式平面図である。FIG. 2 is a schematic plan view showing the light emitting device according to the first embodiment. 図3は、図2のA−A線における模式断面図である。FIG. 3 is a schematic cross-sectional view taken along line AA in FIG. 図4は、実施の形態1に係る発光装置の製造方法を説明する模式断面図である。FIG. 4 is a schematic cross-sectional view illustrating the method for manufacturing the light emitting device according to Embodiment 1. 図5は、実施の形態1に係る発光装置の製造方法を説明する模式断面図である。FIG. 5 is a schematic cross-sectional view illustrating the method for manufacturing the light-emitting device according to Embodiment 1. 図6は、実施の形態1に係る発光装置の製造方法を説明する模式平面図である。FIG. 6 is a schematic plan view illustrating the method for manufacturing the light emitting device according to Embodiment 1. 図7は、実施の形態1に係る発光装置の製造方法を説明する模式平面図である。FIG. 7 is a schematic plan view illustrating the method for manufacturing the light emitting device according to Embodiment 1. 図8は、実施の形態2に係る発光装置を示す模式断面図である。FIG. 8 is a schematic cross-sectional view showing the light emitting device according to the second embodiment. 図9は、実施の形態3に係る発光装置を示す平面図である。FIG. 9 is a plan view showing the light emitting device according to Embodiment 3. FIG . 図10は、実施の形態4に係る発光装置を示す模式断面図である。FIG. 10 is a schematic cross-sectional view showing the light emitting device according to the fourth embodiment. 図11は、実施の形態4に係る発光装置を示す模式平面図である。FIG. 11 is a schematic plan view showing a light emitting device according to Embodiment 4. FIG. 図12は、従来の発光装置を示す模式断面図である。FIG. 12 is a schematic cross-sectional view showing a conventional light emitting device. 図13は、従来の発光装置を示す模式断面図である。FIG. 13 is a schematic cross-sectional view showing a conventional light emitting device.

(導電パターン2a、2b)
正負一対の導電パターン2a、2bは、基材1上に、光反射性樹脂5(樹脂)に被覆された樹脂被覆部から基材1の外縁に向かって延出された形状で形成される。導電パターン2a、2bは、幅広とすることで、外部電源からの電流を発光素子3へと効率的に流すことができ、好ましくは発光素子3の幅より広い幅とする。導電パターン2a、2bの材料としては、基材1表面に形成可能であり、発光装置の正極および負極として用いることのできる材料を選択する。例えば、バンプと同じAuを用いる。導電パターン2a、2bは、電解めっき、無電解めっき、蒸着、スパッタ等によって形成できる。また、本実施形態の導電パターン2a、2bは、光反射樹脂5によって被覆された樹脂被覆部から基材1の外縁へ向かって延伸し、基材1の外縁にほぼ到達した位置で、さらに基材1の外縁に沿って連続して延伸している。これによって、外部電源と接続される外部接続部を大面積とでき、外部電源と接続し易い発光装置とできる。また、導電パターンa、bに用いられる金属材料は、外来光を反射し易いため、図2に示すように、光反射性樹脂5から露出した導電パターンa、bの図2中における下端の位置は、発光面4aの図2中における下端の位置と略同一とすることが好ましい。これによって、図2中における発光面4aの下端よりも下側において、外来光からの照り返しを抑制でき、所望の照射パターンを得ることができる。
(Conductive pattern 2a, 2b)
The pair of positive and negative conductive patterns 2 a and 2 b are formed on the base material 1 in a shape extending from the resin coating portion covered with the light-reflective resin 5 (resin) toward the outer edge of the base material 1. By making the conductive patterns 2 a and 2 b wide, a current from an external power source can be efficiently passed to the light emitting element 3, and preferably a width wider than the width of the light emitting element 3. As a material for the conductive patterns 2a and 2b, a material that can be formed on the surface of the substrate 1 and can be used as the positive electrode and the negative electrode of the light emitting device is selected. For example, the same Au as the bump is used. The conductive patterns 2a and 2b can be formed by electrolytic plating, electroless plating, vapor deposition, sputtering, or the like. In addition, the conductive patterns 2a and 2b of the present embodiment extend from the resin coating portion coated with the light reflecting resin 5 toward the outer edge of the base material 1, and further at the position where the outer edge of the base material 1 is substantially reached. It extends continuously along the outer edge of the material 1. As a result, the external connection portion connected to the external power source can have a large area, and the light emitting device can be easily connected to the external power source. The metal material is used for the conductive pattern 2 a, 2 b, liable to reflect external light, as shown in FIG. 2, the conductive pattern 2 a, 2 b in FIG. 2 exposed from the light reflective resin 5 The position of the lower end of is preferably substantially the same as the position of the lower end of the light emitting surface 4a in FIG. Thereby, the reflection from the external light can be suppressed below the lower end of the light emitting surface 4a in FIG. 2, and a desired irradiation pattern can be obtained.

貫通孔6a、6bは、好ましくは導電パターン2a、2bの延出方向と略平行な方向に長い形状とし、さらに好ましくは、図7(a)に示すように、導電パターン2a、2bの延出方向を長手方向とする略長方形状とする。また、図5(d)に示すように、貫通孔6a、6bは、枠状の第1の光反射性樹脂5aの延伸方向に対して垂直方向に長い形状とすることが好ましい。貫通孔6a、6bの短手方向の幅は、少なくとも、貫通孔6a、6b内で基材1と光反射性樹脂5とが接触可能な程度あればよく、導電パターン2a、2bにおける電流の流れを阻害し難いように幅狭とすることが好ましい。貫通孔6a、6bの短手方向の幅は、発光素子3の幅よりも小さくでき、また、第1の光反射性樹脂5aの幅よりも小さくできる。また、貫通孔6a、6bの短手方向の幅は、貫通孔6a、6bが配置された部分における導電パターン2a、2bの幅の5%〜20%程度とすることが好ましく、複数配置する場合は、複数の貫通孔6aの幅の合計を導電パターン2aの半分以下、さらには20%〜40%程度とすることが好ましい。このような貫通孔6a、6bは、複数設けることで、電流の流れを阻害しないように、基材1と光反射性樹脂5との接着面積を大きくでき、基材1と光反射性樹脂5との密着力を向上できる。複数の貫通孔6a、6bは略同一の間隔で配置することが好ましく、正負一対の導電パターン2a、2bにそれぞれ同一の数を同様に配置することが好ましい。例えば、本実施形態では、図6(a)に示すように、正負一対の導電パターン2a、2bにそれぞれ4個ずつの貫通孔6a、6bを設けている。 The through holes 6a and 6b are preferably long in a direction substantially parallel to the extending direction of the conductive patterns 2a and 2b, and more preferably, as shown in FIG. 7A , the extending of the conductive patterns 2a and 2b. A substantially rectangular shape whose direction is the longitudinal direction is used. Moreover, as shown in FIG.5 (d), it is preferable that the through-holes 6a and 6b are long in the orthogonal | vertical direction with respect to the extending | stretching direction of the frame-shaped 1st light reflective resin 5a. The width of the through-holes 6a and 6b in the short direction may be at least as long as the base material 1 and the light-reflective resin 5 can be in contact with each other in the through-holes 6a and 6b. It is preferable to make it narrow so that it is difficult to inhibit. The width in the short direction of the through holes 6a and 6b can be made smaller than the width of the light emitting element 3, and can be made smaller than the width of the first light reflective resin 5a. The width in the short direction of the through holes 6a, 6b is preferably about 5% to 20% of the width of the conductive patterns 2a, 2b in the portion where the through holes 6a, 6b are arranged. The total width of the plurality of through holes 6a is preferably less than half of the conductive pattern 2a, more preferably about 20% to 40%. By providing a plurality of such through-holes 6a and 6b, the bonding area between the base material 1 and the light-reflecting resin 5 can be increased so as not to inhibit the flow of current. Can improve adhesion. The plurality of through-holes 6a and 6b are preferably arranged at substantially the same interval, and it is preferable that the same number is similarly arranged in the pair of positive and negative conductive patterns 2a and 2b. For example, in the present embodiment, as shown in FIG. 6A, four through holes 6a and 6b are provided in each of the pair of positive and negative conductive patterns 2a and 2b.

まず、表面に導電パターン2a、2b、2cが形成された基材1を準備する。本実施例では、基材1として平板状の窒化アルミニウム基板を用いる。基材1は、熱電導率が170W/m・K程度の窒化アルミニウム板材を焼成して形成し、その上にTi、Pt、Auを順に蒸着で施して、発光素子3との電気的接続をとるための導電パターン2a、2b、2cを形成している。正負一対の導電パターン2a、2bにそれぞれ貫通孔6a、6bが設けられている。基材1のサイズは、図2における縦横の長さがそれぞれ約6.5mm、約12mmであり、厚みが約1mmである。導電パターン2a、2b、2cは、その厚みが約0.9μmであり、図6(a)における貫通孔6a、6bが配置された部分の幅が約2.2mmである。貫通孔6a、6bは、その幅が約0.15mm、その長さが約1mmであり、貫通孔6a、6bの幅は導電パターン2a、2bの幅の約6.8%である。貫通孔6a、6bは、導電パターン2a、2bにそれぞれ同一サイズのものが等間隔に4個ずつ、合計8個配置されており、4個の貫通孔6aの幅の合計は導電パターン2aの幅の約27%である。
First, the base material 1 having the conductive patterns 2a, 2b, and 2c formed on the surface is prepared. In this embodiment, a flat aluminum nitride substrate is used as the base material 1. The base material 1 is formed by baking an aluminum nitride plate material having a thermal conductivity of about 170 W / m · K, and Ti, Pt, and Au are sequentially deposited thereon to make electrical connection with the light emitting element 3. Conductive patterns 2a, 2b, and 2c for taking are formed. Through holes 6a and 6b are provided in the pair of positive and negative conductive patterns 2a and 2b, respectively. As for the size of the substrate 1, the length and width in FIG. 2 are about 6.5 mm and about 12 mm, respectively, and the thickness is about 1 mm. The conductive patterns 2a, 2b, and 2c have a thickness of about 0.9 μm, and the width of the portion where the through holes 6a and 6b are arranged in FIG. 6A is about 2.2 mm . The through holes 6a and 6b have a width of about 0.15 mm and a length of about 1 mm, and the width of the through holes 6a and 6b is about 6.8% of the width of the conductive patterns 2a and 2b. Eight through holes 6a and 6b are arranged in the conductive patterns 2a and 2b, each having the same size, four equally spaced, and the total width of the four through holes 6a is the width of the conductive pattern 2a. About 27%.

JP2010243812A 2010-10-29 2010-10-29 Light emitting device and manufacturing method thereof Active JP5648422B2 (en)

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Application Number Priority Date Filing Date Title
JP2010243812A JP5648422B2 (en) 2010-10-29 2010-10-29 Light emitting device and manufacturing method thereof
EP11186792.5A EP2448028B1 (en) 2010-10-29 2011-10-26 Light emitting apparatus and production method thereof
US13/283,415 US8759124B2 (en) 2010-10-29 2011-10-27 Light emitting apparatus and production method thereof
CN201110337731.1A CN102468410B (en) 2010-10-29 2011-10-28 Light-emitting device and manufacture method thereof
US14/275,331 US9076948B2 (en) 2010-10-29 2014-05-12 Light emitting apparatus and production method thereof
US14/731,290 US9276181B2 (en) 2010-10-29 2015-06-04 Light emitting apparatus and production method thereof
US14/988,319 US10741729B2 (en) 2010-10-29 2016-01-05 Light emitting apparatus and production method thereof
US16/920,243 US11626543B2 (en) 2010-10-29 2020-07-02 Light emitting apparatus and production method thereof
US18/181,962 US11876153B2 (en) 2010-10-29 2023-03-10 Light emitting apparatus and production method thereof

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JP6089686B2 (en) 2012-12-25 2017-03-08 日亜化学工業株式会社 Light emitting device
JP6208967B2 (en) * 2013-04-03 2017-10-04 アピックヤマダ株式会社 Manufacturing method of LED device
JP2014225636A (en) * 2013-04-16 2014-12-04 株式会社ディスコ Light-emitting device
JP6186904B2 (en) 2013-06-05 2017-08-30 日亜化学工業株式会社 Light emitting device
JP6244784B2 (en) 2013-09-30 2017-12-13 日亜化学工業株式会社 Light emitting device
JP6221864B2 (en) 2014-03-17 2017-11-01 豊田合成株式会社 Light emitting device
JP6805532B2 (en) * 2015-06-18 2020-12-23 日亜化学工業株式会社 Light emitting device
JP6142902B2 (en) 2015-07-23 2017-06-07 日亜化学工業株式会社 Light emitting device and manufacturing method thereof
JP6520663B2 (en) 2015-11-27 2019-05-29 日亜化学工業株式会社 Element mounting substrate and light emitting device
US10461065B2 (en) 2015-11-30 2019-10-29 Nichia Corporation Method of manufacturing light emitting device
JP2017135253A (en) * 2016-01-27 2017-08-03 オムロン株式会社 Light-emitting device and method of manufacturing the same
JP6645213B2 (en) * 2016-01-27 2020-02-14 オムロン株式会社 Light emitting device and method of manufacturing light emitting device
JP6414141B2 (en) 2016-05-31 2018-10-31 日亜化学工業株式会社 Light emitting device
JP7364858B2 (en) * 2019-06-13 2023-10-19 日亜化学工業株式会社 light emitting device

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JP2006324589A (en) * 2005-05-20 2006-11-30 Sharp Corp Led device and manufacturing method thereof
JP5526782B2 (en) * 2007-11-29 2014-06-18 日亜化学工業株式会社 Light emitting device and manufacturing method thereof
JP5169263B2 (en) * 2008-02-01 2013-03-27 日亜化学工業株式会社 LIGHT EMITTING DEVICE MANUFACTURING METHOD AND LIGHT EMITTING DEVICE
JP5326705B2 (en) * 2009-03-17 2013-10-30 日亜化学工業株式会社 Light emitting device

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