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JP2017098498A - Led light-emitting device - Google Patents

Led light-emitting device
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JP2017098498A
JP2017098498AJP2015231977AJP2015231977AJP2017098498AJP 2017098498 AJP2017098498 AJP 2017098498AJP 2015231977 AJP2015231977 AJP 2015231977AJP 2015231977 AJP2015231977 AJP 2015231977AJP 2017098498 AJP2017098498 AJP 2017098498A
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led
wire
emitting device
back surface
led light
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JP6831624B2 (en
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裕輝 田沼
Hiroteru Tanuma
裕輝 田沼
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Rohm Co Ltd
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Rohm Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an LED light-emitting device capable of reducing the size.SOLUTION: An LED light-emitting device is an LED light-emitting device A1 comprising: a substrate 1 having a base material 2 and a wiring pattern 3; a plurality of LED chips 4; and a plurality of wires 5 that allows the LED chips 4 and the wiring pattern 3 to be conducted. The base material 2 includes a plurality of housing concave parts 23 including an LED housing part 24 and a wire housing part 25. The plurality of LED chips 4 is housed to the LED housing part 24. A part of the plurality of wires 5 is housed to the wire housing part 25. The LED housing part 24 and wire housing part 25 are connected in parallel to a y direction. In both of adjacent housing convex parts 23 in a x direction, a position of the wire housing part 25 to the LED housing part 24 in the y direction is opposite each other.SELECTED DRAWING: Figure 1

Description

Translated fromJapanese

本発明は、LED発光装置に関する。  The present invention relates to an LED light emitting device.

特許文献1には、従来のLED発光装置の一例が開示されている。同文献に開示されたLED発光装置は、基板と当該基板に搭載された複数のLEDチップとを備える。前記複数のLEDチップは、前記基板の片面上に実装されている。また、前記LED発光装置は、前記複数のLEDチップを覆う透光樹脂を備える。前記複数のLEDチップに電力を供給する電力供給経路を構成する要素として、たとえば複数のワイヤが用いられる。また、前記複数のLEDチップから側方に進行する光を前記片面が向く方向へと反射するリフレクタが備えられる場合がある。  Patent Document 1 discloses an example of a conventional LED light emitting device. The LED light-emitting device disclosed in this document includes a substrate and a plurality of LED chips mounted on the substrate. The plurality of LED chips are mounted on one side of the substrate. Further, the LED light emitting device includes a translucent resin that covers the plurality of LED chips. For example, a plurality of wires are used as elements constituting a power supply path for supplying power to the plurality of LED chips. Moreover, there may be provided a reflector that reflects light traveling laterally from the plurality of LED chips in a direction in which the one side faces.

前記複数のLEDチップは、前記基板の前記片面上に実装されているため、前記基板から突出する。さらに、前記透光樹脂や前記リフレクタは、前記複数のLEDチップよりも厚さが大とならざるを得ない。また、前記複数のワイヤを配置するための平面視スペースを確保する必要がある。これらにより、前記LED発光装置の厚さ方向寸法および平面視寸法を小型化することは容易ではない。  Since the plurality of LED chips are mounted on the one surface of the substrate, they protrude from the substrate. Furthermore, the translucent resin and the reflector must be thicker than the plurality of LED chips. Further, it is necessary to secure a space in plan view for arranging the plurality of wires. Accordingly, it is not easy to reduce the thickness direction dimension and the planar view dimension of the LED light emitting device.

特開2015−191924号公報Japanese Patent Laying-Open No. 2015-191924

本発明は、上記した事情のもとで考え出されたものであって、小型化を図ることが可能なLED発光装置を提供することをその課題とする。  The present invention has been conceived under the circumstances described above, and an object thereof is to provide an LED light-emitting device that can be miniaturized.

本発明によって提供されるLED発光装置は、厚さ方向において互いに反対側を向く主面および裏面を有する基材および当該基材に形成された配線パターンを具備する基板と、前記基板に搭載された複数のLEDチップと、各々が前記LEDチップと前記配線パターンとを導通させる複数のワイヤと、を備えたLED発光装置であって、前記基材は、各々が主面に開口する主面開口部と当該主面開口部か前記裏面側に繋がるLED収容部およびワイヤ収容部とを含む複数の収容凹部を有し、前記複数のLEDチップは、各々が前記厚さ方向視においてそのすべてが前記LED収容部に収容され且つ前記厚さ方向においてそのすべてが前記LED収容部に収容されており、前記複数のワイヤは、各々が前記厚さ方向視においてその一部が前記ワイヤ収容部に収容され且つ前記厚さ方向において前記一部が前記ワイヤ収容部に収容されており、前記LED収容部と前記ワイヤ収容部とは、前記厚さ方向に直角である第一方向に並んで繋がっており、前記厚さ方向および前記第一方向のいずれに対しても直角である第二方向において隣り合う収容凹部どうしは、前記第一方向におけるLED収容部に対するワイヤ収容部の位置が互いに反対であることを特徴とする。  An LED light-emitting device provided by the present invention is mounted on a substrate including a base material having a main surface and a back surface facing opposite sides in the thickness direction, and a wiring pattern formed on the base material, and the substrate An LED light emitting device comprising a plurality of LED chips and a plurality of wires each conducting the LED chip and the wiring pattern, wherein the base material has a main surface opening that opens to the main surface. And a plurality of housing recesses including an LED housing portion and a wire housing portion connected to the main surface opening portion or the back surface side, and each of the plurality of LED chips is the LED in the thickness direction view. All of the wires are housed in the LED housing portion in the thickness direction, and each of the plurality of wires is part of the wire in the thickness direction view. And the part is accommodated in the wire accommodating part in the thickness direction, and the LED accommodating part and the wire accommodating part are in a first direction perpendicular to the thickness direction. The housing recesses adjacent to each other in the second direction that are connected side by side and are perpendicular to both the thickness direction and the first direction have a position of the wire housing portion relative to the LED housing portion in the first direction. It is characterized by being opposite to each other.

本発明の好ましい実施の形態においては、前記LED収容部は、前記主面開口部に繋がるLED側側面を有する。  In a preferred embodiment of the present invention, the LED housing portion has an LED side surface connected to the main surface opening.

本発明の好ましい実施の形態においては、前記LED側側面は、前記厚さ方向において前記主面に向かうほど前記厚さ方向と直角である断面が大となるように傾斜している。  In a preferred embodiment of the present invention, the LED side surface is inclined so that a cross section perpendicular to the thickness direction becomes larger toward the main surface in the thickness direction.

本発明の好ましい実施の形態においては、前記配線パターンは、前記LED側側面の少なくとも一部を覆うLED側側面部を有する。  In a preferred embodiment of the present invention, the wiring pattern has an LED side surface portion covering at least a part of the LED side surface.

本発明の好ましい実施の形態においては、前記LED側側面部は、前記LED側側面のすべてを覆っている。  In a preferred embodiment of the present invention, the LED side surface portion covers all of the LED side surface.

本発明の好ましい実施の形態においては、前記ワイヤ収容部は、前記主面開口部に繋がるワイヤ側側面を有する。  In a preferred embodiment of the present invention, the wire housing portion has a wire side surface connected to the main surface opening.

本発明の好ましい実施の形態においては、前記ワイヤ側側面は、前記厚さ方向において前記主面に向かうほど前記厚さ方向と直角である断面が大となるように傾斜している。  In a preferred embodiment of the present invention, the side surface on the wire side is inclined so that a cross section perpendicular to the thickness direction becomes larger toward the main surface in the thickness direction.

本発明の好ましい実施の形態においては、前記配線パターンは、前記ワイヤ側側面の一部を覆うワイヤ側側面部を有する。  In a preferred embodiment of the present invention, the wiring pattern has a wire side surface portion covering a part of the wire side surface.

本発明の好ましい実施の形態においては、前記LED収容部は、前記LED側側面に前記裏面側から繋がるLED側底面を有する。  In preferable embodiment of this invention, the said LED accommodating part has the LED side bottom face connected with the said LED side side surface from the said back surface side.

本発明の好ましい実施の形態においては、前記主面開口部のうち前記LED側側面に繋がる部分と前記LED側底面とは、前記厚さ方向視において円形状である。  In a preferred embodiment of the present invention, a portion connected to the LED side surface and the LED side bottom surface of the main surface opening are circular in the thickness direction view.

本発明の好ましい実施の形態においては、前記配線パターンは、前記LED側底面を覆い且つ前記LEDチップが接合されたLED側底面部を有する。  In preferable embodiment of this invention, the said wiring pattern has the LED side bottom face part which covered the said LED side bottom face and to which the said LED chip was joined.

本発明の好ましい実施の形態においては、前記配線パターンは、前記基材の前記裏面に形成されたLED側裏面電極部と、前記基材を前記厚さ方向に貫通し且つ前記LED側底面部と前記LED側裏面電極部とを導通させるLED側スルーホール部と、を有する。  In a preferred embodiment of the present invention, the wiring pattern includes an LED-side back surface electrode portion formed on the back surface of the base material, the base material penetrating the base material in the thickness direction, and the LED-side bottom surface portion. An LED-side through-hole portion that conducts the LED-side back electrode portion.

本発明の好ましい実施の形態においては、前記ワイヤ収容部は、前記ワイヤ側側面に前記裏面側から繋がるワイヤ側底面を有する。  In preferable embodiment of this invention, the said wire accommodating part has the wire side bottom face connected to the said wire side side face from the said back surface side.

本発明の好ましい実施の形態においては、前記主面開口部のうち前記ワイヤ側側面に繋がる部分と前記ワイヤ側底面とは、前記厚さ方向視において矩形状である。  In a preferred embodiment of the present invention, the portion connected to the wire side surface and the wire side bottom surface of the main surface opening are rectangular in the thickness direction view.

本発明の好ましい実施の形態においては、前記配線パターンは、前記ワイヤ側底面の一部を覆い且つワイヤがボンディングされたワイヤ側底面部を有する。  In a preferred embodiment of the present invention, the wiring pattern has a wire side bottom surface part that covers a part of the wire side bottom surface and to which a wire is bonded.

本発明の好ましい実施の形態においては、前記配線パターンは、前記基材の前記裏面に形成されたワイヤ側裏面電極部と、前記基材を前記厚さ方向に貫通し且つ前記ワイヤ側底面部と前記ワイヤ側裏面電極部とを導通させるワイヤ側スルーホール部と、を有する。  In a preferred embodiment of the present invention, the wiring pattern includes: a wire-side back surface electrode portion formed on the back surface of the base material; and the wire-side bottom surface portion penetrating the base material in the thickness direction. And a wire-side through-hole portion that conducts the wire-side back electrode portion.

本発明の好ましい実施の形態においては、前記ワイヤ側底面は、前記LED側底面よりも前記厚さ方向において前記主面側に位置する。  In a preferred embodiment of the present invention, the wire side bottom surface is located closer to the main surface side in the thickness direction than the LED side bottom surface.

本発明の好ましい実施の形態においては、前記LED収容部は、前記裏面に開口するLED側裏面開口部を有する。  In preferable embodiment of this invention, the said LED accommodating part has the LED side back surface opening part opened to the said back surface.

本発明の好ましい実施の形態においては、前記主面開口部のうち前記LED側側面に繋がる部分と前記LED側裏面開口部とは、前記厚さ方向視において円形状である。  In preferable embodiment of this invention, the part connected to the said LED side side surface and the said LED side back surface opening part of the said main surface opening part are circular in the said thickness direction view.

本発明の好ましい実施の形態においては、前記配線パターンは、前記LED側側面部に前記裏面側から繋がるとともに前記LED側裏面開口部を塞ぎ且つ前記LEDチップが接合されたLED側底面部を有する。  In a preferred embodiment of the present invention, the wiring pattern has an LED-side bottom surface portion that is connected to the LED-side side surface portion from the back surface side, closes the LED-side back surface opening, and is joined to the LED chip.

本発明の好ましい実施の形態においては、前記配線パターンは、前記裏面側から前記LED側裏面開口部を覆い且つ前記LED側底面部と積層されたLED側裏面電極部を有する。  In preferable embodiment of this invention, the said wiring pattern has the LED side back surface electrode part which covered the said LED side back surface opening part from the said back surface side, and was laminated | stacked with the said LED side bottom face part.

本発明の好ましい実施の形態においては、前記ワイヤ収容部は、前記裏面に開口するワイヤ側裏面開口部を有する。  In preferable embodiment of this invention, the said wire accommodating part has a wire side back surface opening part opened to the said back surface.

本発明の好ましい実施の形態においては、前記主面開口部のうち前記ワイヤ側側面に繋がる部分と前記ワイヤ側裏面開口部とは、前記厚さ方向視において矩形状である。  In a preferred embodiment of the present invention, the portion connected to the wire side surface of the main surface opening and the wire side back surface opening are rectangular in the thickness direction view.

本発明の好ましい実施の形態においては、前記配線パターンは、前記ワイヤ側側面部に前記裏面側から繋がるとともに前記ワイヤ側裏面開口部を塞ぎ且つ前記ワイヤがボンディングされたワイヤ側底面部を有する。  In a preferred embodiment of the present invention, the wiring pattern has a wire-side bottom surface portion that is connected to the wire-side side surface portion from the back surface side, closes the wire-side back surface opening, and is bonded to the wire.

本発明の好ましい実施の形態においては、前記配線パターンは、前記裏面側から前記LED側裏面開口部を覆い且つ前記ワイヤ側底面部と積層されたワイヤ側裏面電極部を有する。  In a preferred embodiment of the present invention, the wiring pattern has a wire-side back surface electrode portion that covers the LED-side back surface opening from the back surface side and is laminated with the wire-side bottom surface portion.

本発明の好ましい実施の形態においては、前記ワイヤ収容部は、前記ワイヤ側側面に前記裏面側から繋がるワイヤ側底面を有する。  In preferable embodiment of this invention, the said wire accommodating part has the wire side bottom face connected to the said wire side side face from the said back surface side.

本発明の好ましい実施の形態においては、前記主面開口部のうち前記ワイヤ側側面に繋がる部分と前記ワイヤ側底面とは、前記厚さ方向視において矩形状である。  In a preferred embodiment of the present invention, the portion connected to the wire side surface and the wire side bottom surface of the main surface opening are rectangular in the thickness direction view.

本発明の好ましい実施の形態においては、前記配線パターンは、前記ワイヤ側底面の一部を覆い且つワイヤがボンディングされたワイヤ側底面部を有する。  In a preferred embodiment of the present invention, the wiring pattern has a wire side bottom surface part that covers a part of the wire side bottom surface and to which a wire is bonded.

本発明の好ましい実施の形態においては、前記配線パターンは、前記基材の前記裏面に形成されたワイヤ側裏面電極部と、前記基材を前記厚さ方向に貫通し且つ前記ワイヤ側底面部と前記ワイヤ側裏面電極部とを導通させるワイヤ側スルーホール部と、を有する。  In a preferred embodiment of the present invention, the wiring pattern includes: a wire-side back surface electrode portion formed on the back surface of the base material; and the wire-side bottom surface portion penetrating the base material in the thickness direction. And a wire-side through-hole portion that conducts the wire-side back electrode portion.

本発明の好ましい実施の形態においては、前記ワイヤ側底面は、前記LED側裏面開口部よりも前記厚さ方向において前記主面側に位置する。  In preferable embodiment of this invention, the said wire side bottom face is located in the said main surface side in the said thickness direction rather than the said LED side back surface opening part.

本発明の好ましい実施の形態においては、前記LEDチップを覆い且つ前記LEDチップからの光を透過させる透光樹脂をさらに備える。  In preferable embodiment of this invention, the transparent resin which covers the said LED chip and permeate | transmits the light from the said LED chip is further provided.

本発明によれば、前記LEDチップが前記LED収容部に収容され、前記ワイヤの一部が前記ワイヤ収容部に収容されている。そして、前記LEDチップおよび前記ワイヤは、それぞれの全体が前記収容凹部に収容される。これにより、前記LEDチップおよび前記ワイヤは、前記厚さ方向において前記基板からは突出しない。また、隣り合う前記収容凹部を千鳥配置とすることにより、隣り合う前記収容凹部が占める前記第二方向寸法を縮小することが可能である。したがって、前記LED発光装置の小型化を図ることができる。  According to the present invention, the LED chip is accommodated in the LED accommodating portion, and a part of the wire is accommodated in the wire accommodating portion. The entire LED chip and the wire are housed in the housing recess. Thereby, the LED chip and the wire do not protrude from the substrate in the thickness direction. Moreover, it is possible to reduce said 2nd direction dimension which the said adjacent accommodation recessed part occupies by making the said adjacent accommodation recessed part into staggered arrangement | positioning. Therefore, the LED light emitting device can be downsized.

本発明のその他の特徴および利点は、添付図面を参照して以下に行う詳細な説明によって、より明らかとなろう。  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

本発明の第一実施形態に基づくLED発光装置を示す要部平面図である。It is a principal part top view which shows the LED light-emitting device based on 1st embodiment of this invention.図1のLED発光装置を示す底面図である。It is a bottom view which shows the LED light-emitting device of FIG.図1のIII−III線に沿う断面図である。It is sectional drawing which follows the III-III line of FIG.図1のIV−IV線に沿う断面図である。It is sectional drawing which follows the IV-IV line of FIG.本発明の第二実施形態に基づくLED発光装置を示す要部平面図である。It is a principal part top view which shows the LED light-emitting device based on 2nd embodiment of this invention.図5のVI−VI線に沿う断面図である。It is sectional drawing which follows the VI-VI line of FIG.図5のVII−VII線に沿う断面図である。It is sectional drawing which follows the VII-VII line of FIG.本発明の第三実施形態に基づくLED発光装置を示す断面図である。It is sectional drawing which shows the LED light-emitting device based on 3rd embodiment of this invention.

以下、本発明の好ましい実施の形態につき、図面を参照して具体的に説明する。  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

図1〜図4は、本発明の第1実施形態に基づくLED発光装置を示している。本実施形態のLED発光装置A1は、基板1、複数のLEDチップ4、複数のワイヤ5および複数の透光樹脂6を備えている。  1 to 4 show an LED light-emitting device according to a first embodiment of the present invention. The LED light emitting device A1 of the present embodiment includes asubstrate 1, a plurality ofLED chips 4, a plurality ofwires 5, and a plurality oftranslucent resins 6.

図1は、LED発光装置A1を示す要部平面図である。図2は、LED発光装置A1を示す底面図である。図3は、図1のIII−III線に沿う断面図である。図4は、図1のIV−IV線に沿う断面図である。なお、これらの図において、基板1(後述の基材2)の厚さ方向をz方向、z方向に直角である方向をx方向およびy方向とする。y方向は、本発明で言う第一方向に相当し、x方向は、本発明で言う第二方向に相当する。図1においては、理解の便宜上、透光樹脂6を省略している。また、配線パターン3にハッチングを付している。  FIG. 1 is a plan view of an essential part showing the LED light emitting device A1. FIG. 2 is a bottom view showing the LED light emitting device A1. 3 is a cross-sectional view taken along line III-III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. In these drawings, the thickness direction of the substrate 1 (base material 2 described later) is defined as the z direction, and the directions perpendicular to the z direction are defined as the x direction and the y direction. The y direction corresponds to the first direction referred to in the present invention, and the x direction corresponds to the second direction referred to in the present invention. In FIG. 1, thetranslucent resin 6 is omitted for convenience of understanding. Further, thewiring pattern 3 is hatched.

基板1は、基材2および配線パターン3を具備する。本実施形態においては、基板1は、平面視長矩形状である。  Thesubstrate 1 includes a base material 2 and awiring pattern 3. In the present embodiment, thesubstrate 1 has a rectangular shape in plan view.

基材2は、少なくともその表面が絶縁性の面とされた部材である。基材2は、主面21および裏面22を有する。主面21と裏面22とは、z方向に離間しており、互いに反対側を向いている。本実施形態においては、基材2は、z方向視(平面視)矩形状である。  The base material 2 is a member whose surface is an insulating surface. The substrate 2 has amain surface 21 and aback surface 22. Themain surface 21 and theback surface 22 are spaced apart from each other in the z direction and face the opposite sides. In the present embodiment, the base material 2 has a rectangular shape as viewed in the z direction (planar view).

基材2の材質は特に限定されず、以下に述べる形状等を実現可能な材質であればよい。このような材質を例示すると、ガラスエポキシ樹脂等の樹脂、シリコン(Si)等が挙げられる。また、以下に述べる形状等を実現する手法は、特に限定されず、たとえば金型成形、圧縮成形、切削加工、エッチング等があげられる。  The material of the base material 2 is not particularly limited as long as the material can realize the shape described below. Examples of such materials include resins such as glass epoxy resins, silicon (Si), and the like. In addition, a method for realizing the shape and the like described below is not particularly limited, and examples thereof include mold molding, compression molding, cutting, etching, and the like.

基材2は、複数の収容凹部23を有する。本実施形態においては、基材2は、2つの収容凹部23を有しているが、収容凹部23の個数は特に限定されず、3以上であってもよい。  The base material 2 has a plurality of housing recesses 23. In the present embodiment, the base material 2 has twohousing recesses 23, but the number ofhousing recesses 23 is not particularly limited, and may be 3 or more.

収容凹部23は、主面開口部231、LED収容部24およびワイヤ収容部25を有する。主面開口部231は、収容凹部23が主面21に開口する部位である。  Thehousing recess 23 includes a main surface opening 231, anLED housing 24 and awire housing 25. The main surface opening 231 is a part where thehousing recess 23 opens in themain surface 21.

LED収容部24は、主面開口部231から裏面22側に繋がっており、本実施形態においては、LED側底面241およびLED側側面242を有する。  TheLED housing portion 24 is connected to theback surface 22 side from the mainsurface opening portion 231, and in the present embodiment, has an LED sidebottom surface 241 and anLED side surface 242.

LED側側面242は、主面開口部231に繋がっている。本実施形態においては、LED側側面242は、z方向において主面21に向かうほど厚さ方向と直角である断面が大となるように傾斜している。  TheLED side surface 242 is connected to themain surface opening 231. In the present embodiment, theLED side surface 242 is inclined so that the cross section perpendicular to the thickness direction becomes larger toward themain surface 21 in the z direction.

LED側底面241は、LED側側面242に裏面22側から繋がる。LED側底面241は、裏面22から離間しており、裏面22とはz方向において反対側を向く面である。  The LED sidebottom surface 241 is connected to the LEDside side surface 242 from theback surface 22 side. The LED-side bottom surface 241 is a surface that is separated from theback surface 22 and faces away from theback surface 22 in the z direction.

本実施形態においては、主面開口部231のうちLED側側面242に繋がる部分とLED側底面241とは、厚さ方向視において円形状である。  In the present embodiment, the portion connected to theLED side surface 242 and the LED sidebottom surface 241 in the main surface opening 231 have a circular shape when viewed in the thickness direction.

ワイヤ収容部25は、主面開口部231から裏面22側に繋がっており、本実施形態においては、ワイヤ側底面251およびLED側側面242を有する。  Thewire accommodating part 25 is connected to theback surface 22 side from the main surface opening 231, and has a wire sidebottom surface 251 and anLED side surface 242 in this embodiment.

ワイヤ側側面252は、主面開口部231に繋がっている。本実施形態においては、ワイヤ側側面252は、z方向において主面21に向かうほど厚さ方向と直角である断面が大となるように傾斜している。  Thewire side surface 252 is connected to themain surface opening 231. In the present embodiment, thewire side surface 252 is inclined so that the cross section perpendicular to the thickness direction becomes larger toward themain surface 21 in the z direction.

ワイヤ側底面251は、ワイヤ側側面252に裏面22側から繋がる。ワイヤ側底面251は、裏面22から離間しており、裏面22とはz方向において反対側を向く面である。また、ワイヤ側底面251は、LED側底面241よりも厚さ方向において主面21側に位置する。  The wire sidebottom surface 251 is connected to the wireside side surface 252 from theback surface 22 side. The wire-side bottom surface 251 is a surface that is separated from theback surface 22 and faces away from theback surface 22 in the z direction. Further, the wire sidebottom surface 251 is located closer to themain surface 21 in the thickness direction than the LED sidebottom surface 241.

主面開口部231のうちワイヤ側側面252に繋がる部分とワイヤ側底面251とは、厚さ方向視において矩形状である。  A portion connected to thewire side surface 252 and the wire sidebottom surface 251 in the main surface opening 231 have a rectangular shape when viewed in the thickness direction.

図1に示すように、各収容凹部23において、LED収容部24とワイヤ収容部25とは、y方向に並んで繋がっている。x方向において隣り合う図示された2つの収容凹部23どうしは、y方向におけるLED収容部24に対するワイヤ収容部25の位置が互いに反対であり、いわゆる千鳥配置とされている。  As shown in FIG. 1, in each accommodation recessedpart 23, theLED accommodating part 24 and thewire accommodating part 25 are connected along with the y direction. The twohousing recesses 23 shown adjacent in the x direction have a so-called zigzag arrangement in which the positions of thewire housing portions 25 relative to theLED housing portions 24 in the y direction are opposite to each other.

また、本実施形態においては、図1に示すように、2つの収容凹部23のLED収容部24の中心のx方向距離である距離Dxは、主面開口部231のうちLED収容部24に繋がる部分の半径Rの2倍よりも小である。これは、2つの収容凹部23のLED収容部24の一部どうしが、x方向において重なる位置関係にあることによる。  In the present embodiment, as shown in FIG. 1, the distance Dx, which is the distance in the x direction between the centers of theLED housing portions 24 of the twohousing recesses 23, is connected to theLED housing portion 24 in themain surface opening 231. It is smaller than twice the radius R of the portion. This is because a part of theLED housing portions 24 of the twohousing recesses 23 overlap each other in the x direction.

配線パターン3は、基材2上に形成されている。配線パターン3は、たとえば、Cu、Ni、Ti、Au等の単種類または複数種類の金属からなる。配線パターン3の形成は、たとえばめっきによる。  Thewiring pattern 3 is formed on the substrate 2. Thewiring pattern 3 is made of, for example, a single type or a plurality of types of metals such as Cu, Ni, Ti, and Au. Thewiring pattern 3 is formed by plating, for example.

配線パターン3は、LED側底面部311、LED側側面部312、LED側裏面電極部313、LED側スルーホール部314、ワイヤ側底面部321、ワイヤ側側面部322、ワイヤ側裏面電極部323およびワイヤ側スルーホール部324を有する。  Thewiring pattern 3 includes an LED-sidebottom surface portion 311, an LED-sideside surface portion 312, an LED-side backsurface electrode portion 313, an LED-side through-hole portion 314, a wire-sidebottom surface portion 321, a wire-sideside surface portion 322, a wire-side backsurface electrode portion 323, and A wire-side through-hole portion 324 is provided.

LED側側面部312は、LED側側面242の少なくとも一部を覆う。本実施形態においては、LED側側面部312は、LED側側面242のすべてを覆っている。  TheLED side surface 312 covers at least a part of theLED side surface 242. In the present embodiment, theLED side surface 312 covers all of the LED side surfaces 242.

LED側底面部311は、LED側側面部312に繋がっている。LED側底面部311は、LED側底面241のすべてを覆っている。  The LED sidebottom surface portion 311 is connected to the LED sideside surface portion 312. The LED sidebottom surface portion 311 covers the entire LED sidebottom surface 241.

LED側裏面電極部313は、裏面22に形成されており、LED発光装置A1を回路基板等に実装する際の接合箇所として用いられる。LED側スルーホール部314は、基材2をz方向に貫通し且つLED側底面部311とLED側裏面電極部313とを導通させている。  The LED side backsurface electrode portion 313 is formed on theback surface 22 and is used as a joint portion when the LED light emitting device A1 is mounted on a circuit board or the like. The LED side through-hole part 314 penetrates the base material 2 in the z direction and electrically connects the LED sidebottom surface part 311 and the LED side backsurface electrode part 313.

ワイヤ側側面部322は、ワイヤ側側面252の一部を覆っている。図1に示すように、ワイヤ側側面部322は、LED側側面部312からy方向に離間しておりLED側側面部312に対して絶縁されている。  The wireside surface part 322 covers a part of thewire side surface 252. As shown in FIG. 1, the wireside surface portion 322 is separated from the LEDside surface portion 312 in the y direction and is insulated from the LEDside surface portion 312.

ワイヤ側底面部321は、ワイヤ側底面251の一部を覆っている。図1に示すように、ワイヤ側底面部321は、LED側側面部312からy方向に離間しておりLED側側面部312に対して絶縁されている。図示された例においては、ワイヤ側底面部321のy方向端縁とワイヤ側側面部322のy方向端縁とは、z方向視において直線をなす。  The wire sidebottom surface portion 321 covers a part of the wire sidebottom surface 251. As shown in FIG. 1, the wire-sidebottom surface portion 321 is separated from the LED-sideside surface portion 312 in the y direction and is insulated from the LED-sideside surface portion 312. In the illustrated example, the y-direction end edge of the wire-sidebottom surface portion 321 and the y-direction end edge of the wire-sideside surface portion 322 form a straight line when viewed in the z-direction.

ワイヤ側裏面電極部323は、裏面22に形成されており、LED発光装置A1を回路基板等に実装する際の接合箇所として用いられる。ワイヤ側スルーホール部324は、基材2をz方向に貫通し且つワイヤ側底面部321とワイヤ側裏面電極部323とを導通させている。  The wire-side backsurface electrode part 323 is formed on theback surface 22 and is used as a joint portion when the LED light emitting device A1 is mounted on a circuit board or the like. The wire-side through-hole portion 324 penetrates the base material 2 in the z direction and electrically connects the wire-sidebottom surface portion 321 and the wire-side backsurface electrode portion 323.

図2に示すように、本実施形態においては、裏面22に2つのLED側裏面電極部313と2つのワイヤ側スルーホール部324とが形成されている。これらのLED側裏面電極部313およびワイヤ側スルーホール部324は、いわゆる千鳥配置とされている。  As shown in FIG. 2, in the present embodiment, two LED-side back electrodeportions 313 and two wire-side through-hole portions 324 are formed on theback surface 22. These LED side backsurface electrode portions 313 and wire side throughhole portions 324 are in a so-called staggered arrangement.

LEDチップ4は、LED発光装置A1の光源であり、たとえば可視光、赤外光、紫外光等を発する。LEDチップ4は、図1に示すように、z方向視においてそのすべてがLED収容部24に収容されている。また、LEDチップ4は、図3および図4に示すように、z方向においてそのすべてがLED収容部24に収容されている。すなわち、図3および図4において、LEDチップ4のz方向上端は、主面開口部231よりもz方向下方に位置しており、LEDチップ4のz方向下端は、LED側底面241よりもz方向上方に位置している。LEDチップ4は、たとえばAgペースト等の導電性接合材(図示略)によってLED側底面部311に接合されている。  TheLED chip 4 is a light source of the LED light emitting device A1, and emits, for example, visible light, infrared light, ultraviolet light, and the like. As shown in FIG. 1, all of theLED chips 4 are accommodated in theLED accommodating portion 24 when viewed in the z direction. Further, as shown in FIGS. 3 and 4, all of theLED chips 4 are accommodated in theLED accommodating portion 24 in the z direction. That is, in FIG. 3 and FIG. 4, the upper end in the z direction of theLED chip 4 is located below the main surface opening 231 in the z direction, and the lower end in the z direction of theLED chip 4 is lower than the LED sidebottom surface 241. Located in the upper direction. TheLED chip 4 is bonded to the LED sidebottom surface portion 311 with a conductive bonding material (not shown) such as Ag paste.

ワイヤ5は、LEDチップ4とワイヤ5とを導通させるためのものであり、たとえばAu等の金属からなる。ワイヤ5の一旦は、LEDチップ4の上面にボンディングされている。ワイヤ5の他端は、ワイヤ側底面部321にボンディングされている。ワイヤ5は、z方向視においてワイヤ側底面部321にボンディングされた側の一部がワイヤ収容部25に収容されている。また、ワイヤ5は、z方向においてワイヤ側底面部321にボンディングされた側の一部がワイヤ収容部25に収容されている。すなわち、図4において、ワイヤ5のうちワイヤ側底面部321にボンディングされた部分のz方向上端は、主面開口部231よりもz方向下方に位置しており、ワイヤ5のうちワイヤ側底面部321にボンディングされた部分のz方向下端は、ワイヤ側底面251よりもz方向上方に位置している。  Thewire 5 is for conducting theLED chip 4 and thewire 5 and is made of a metal such as Au. Thewire 5 is once bonded to the upper surface of theLED chip 4. The other end of thewire 5 is bonded to the wire sidebottom surface portion 321. A part of thewire 5 on the side bonded to the wire sidebottom surface portion 321 when viewed in the z direction is accommodated in thewire accommodating portion 25. Further, a part of thewire 5 that is bonded to the wire sidebottom surface portion 321 in the z direction is accommodated in thewire accommodating portion 25. That is, in FIG. 4, the upper end in the z direction of the portion of thewire 5 bonded to the wire sidebottom surface portion 321 is located below the main surface opening 231 in the z direction. The lower end in the z direction of the portion bonded to 321 is located above the wire sidebottom surface 251 in the z direction.

透光樹脂6は、収容凹部23に充填されており、LEDチップ4およびワイヤ5を覆っている。透光樹脂6は、LEDチップ4からの光を透過させる材質からなり、たとえば透明または半透明のシリコーン樹脂やエポキシ樹脂からなる。  Thetranslucent resin 6 is filled in thehousing recess 23 and covers theLED chip 4 and thewire 5. Thetranslucent resin 6 is made of a material that transmits light from theLED chip 4 and is made of, for example, a transparent or translucent silicone resin or epoxy resin.

次に、LED発光装置A1の作用について説明する。  Next, the operation of the LED light emitting device A1 will be described.

本実施形態によれば、LEDチップ4がLED収容部24に収容され、ワイヤ5の一部がワイヤ収容部25に収容されている。そして、LEDチップ4およびワイヤ5は、それぞれの全体が収容凹部23に収容されている。これにより、LEDチップ4およびワイヤ5は、z方向において基板1からは突出しない。また、隣り合う収容凹部23を千鳥配置とすることにより、隣り合う収容凹部23が占めるx方向寸法を縮小することが可能である。したがって、LED発光装置A1の小型化を図ることができる。特に、距離Dxが、半径Rの2倍よりも小であることは、LED発光装置A1の小型化に好ましい。  According to the present embodiment, theLED chip 4 is accommodated in theLED accommodating portion 24, and a part of thewire 5 is accommodated in thewire accommodating portion 25. Theentire LED chip 4 and thewire 5 are accommodated in theaccommodating recess 23. Thereby, theLED chip 4 and thewire 5 do not protrude from thesubstrate 1 in the z direction. In addition, by arranging the adjacentaccommodating recesses 23 in a staggered arrangement, it is possible to reduce the dimension in the x direction occupied by the adjacent accommodating recesses 23. Therefore, size reduction of LED light-emitting device A1 can be achieved. In particular, the distance Dx being smaller than twice the radius R is preferable for reducing the size of the LED light emitting device A1.

また、LED側側面242は、z方向において主面21に向かうほど厚さ方向と直角である断面が大となるように傾斜している。LED側側面242は、そのすべてがLED側側面部312に覆われている。これにより、LEDチップ4からx方向およびy方向に進行する光をz方向へと反射することが可能であり、LED発光装置A1の高輝度化を図ることができる。  Further, theLED side surface 242 is inclined so that a cross section perpendicular to the thickness direction becomes larger toward themain surface 21 in the z direction. All of theLED side surface 242 is covered with theLED side surface 312. As a result, it is possible to reflect the light traveling in the x direction and the y direction from theLED chip 4 in the z direction, and the brightness of the LED light emitting device A1 can be increased.

主面開口部231のうちLED側側面242に繋がる部分とLED側底面241とは、厚さ方向視において円形状である。これにより、LED発光装置A1からより均一な光を出射することができる。  A portion connected to theLED side surface 242 in the main surface opening 231 and the LED sidebottom surface 241 have a circular shape when viewed in the thickness direction. Thereby, more uniform light can be emitted from the LED light emitting device A1.

ワイヤ5は、ワイヤ側底面251のワイヤ側底面部321にボンディングされている。ワイヤ側底面251は、LED側底面241よりも厚さ方向において主面21側に位置する。これにより、ワイヤ5の長さを縮小することが可能である。また、ワイヤ5をボンディングするためのキャピラリ等とワイヤ側側面252の干渉を回避する点において有利である。  Thewire 5 is bonded to the wire sidebottom surface portion 321 of the wire sidebottom surface 251. The wire sidebottom surface 251 is located closer to themain surface 21 in the thickness direction than the LED sidebottom surface 241. Thereby, the length of thewire 5 can be reduced. Further, it is advantageous in that interference between the capillary for bonding thewire 5 and thewire side surface 252 is avoided.

LED側スルーホール部314によってLED側底面部311とLED側裏面電極部313とを導通させ、ワイヤ側スルーホール部324によってワイヤ側底面部321とワイヤ側裏面電極部323とを導通させることにより、基材2の側面等にLED側底面部311およびLED側裏面電極部313やワイヤ側底面部321およびワイヤ側裏面電極部323を導通させるための部材を設ける必要が無い。  By making the LED sidebottom surface portion 311 and the LED side backsurface electrode portion 313 conductive by the LED side throughhole portion 314, and by making the wire sidebottom surface portion 321 and the wire side backsurface electrode portion 323 conductive by the wire side throughhole portion 324, There is no need to provide a member for conducting the LED sidebottom surface portion 311 and the LED side backsurface electrode portion 313, the wire sidebottom surface portion 321 and the wire side backsurface electrode portion 323 on the side surface of the substrate 2 or the like.

図5〜図8は、本発明の他の実施形態を示している。なお、これらの図において、上記実施形態と同一または類似の要素には、上記実施形態と同一の符号を付している。  5 to 8 show other embodiments of the present invention. In these drawings, the same or similar elements as those in the above embodiment are denoted by the same reference numerals as those in the above embodiment.

図5〜図7は、本発明の第二実施形態に基づくLED発光装置を示している。本実施形態のLED発光装置A2は、主に基板1の構成が上述したLED発光装置A1と異なっている。  5-7 has shown the LED light-emitting device based on 2nd embodiment of this invention. The LED light emitting device A2 of the present embodiment is mainly different from the LED light emitting device A1 described above in the configuration of thesubstrate 1.

図5は、LED発光装置A2を示す要部平面図である。図6は、図5のVI−VI線に沿う断面図である。図7は、図5のVII−VII線に沿う断面図である。  FIG. 5 is a plan view of an essential part showing the LED light emitting device A2. 6 is a cross-sectional view taken along the line VI-VI in FIG. 7 is a cross-sectional view taken along line VII-VII in FIG.

本実施形態においては、LED収容部24は、LED側側面242およびLED側裏面開口部243を有する。LED側裏面開口部243は、裏面22に開口している。LED側側面242は、主面開口部231とLED側裏面開口部243とに繋がっており、基材2の厚さ方向全域に設けられている。本実施形態においても、主面開口部231のうちLED側側面242に繋がる部分とLED側裏面開口部243とは、z方向視において円形状である。  In the present embodiment, theLED housing portion 24 has anLED side surface 242 and an LED side backsurface opening 243. The LED-side backsurface opening 243 opens to theback surface 22. TheLED side surface 242 is connected to the main surface opening 231 and the LED side backsurface opening 243, and is provided in the entire thickness direction of the substrate 2. Also in the present embodiment, the portion connected to theLED side surface 242 and the LED side back surface opening 243 in the main surface opening 231 are circular when viewed in the z direction.

ワイヤ収容部25は、ワイヤ側側面252およびワイヤ側裏面開口部253を有する。ワイヤ側側面252は、裏面22に開口している。ワイヤ側側面252は、主面開口部231とワイヤ側裏面開口部253とに繋がっており、基材2の厚さ方向全域に設けられている。本実施形態においても、主面開口部231のうちワイヤ側側面252に繋がる部分とワイヤ側裏面開口部253とは、z方向視において円形状である。  Thewire housing portion 25 has awire side surface 252 and a wire side backsurface opening 253. Thewire side surface 252 is open to theback surface 22. Thewire side surface 252 is connected to the main surface opening 231 and the wire side backsurface opening 253, and is provided in the entire thickness direction of the substrate 2. Also in this embodiment, the portion connected to thewire side surface 252 and the wire side rear surface opening 253 in the main surface opening 231 are circular when viewed in the z direction.

配線パターン3は、LED側底面部311、LED側側面部312、LED側裏面電極部313、ワイヤ側底面部321、ワイヤ側側面部322およびワイヤ側裏面電極部323を有する。  Thewiring pattern 3 includes an LED sidebottom surface portion 311, an LED sideside surface portion 312, an LED side backsurface electrode portion 313, a wire sidebottom surface portion 321, a wire sideside surface portion 322, and a wire side backsurface electrode portion 323.

LED側側面部312は、LED側側面242の少なくとも一部を覆う。本実施形態においては、LED側側面部312は、LED側側面242のすべてを覆っている。  TheLED side surface 312 covers at least a part of theLED side surface 242. In the present embodiment, theLED side surface 312 covers all of the LED side surfaces 242.

LED側底面部311は、LED側側面部312に裏面22側から繋がるとともにLED側裏面開口部243を塞いでいる。LED側底面部311には、LEDチップ4が接合されている。  The LED sidebottom surface portion 311 is connected to the LED sideside surface portion 312 from theback surface 22 side and closes the LED side backsurface opening 243. TheLED chip 4 is bonded to the LED sidebottom surface portion 311.

LED側裏面電極部313は、裏面22側からLED側裏面開口部243を覆っている。z方向視において、LED側裏面開口部243は、LED側裏面電極部313に内包されている。LED側裏面電極部313のうちz方向視においてLED側裏面開口部243と重なる部分は、LED側底面部311と積層されている。  The LED side backsurface electrode portion 313 covers the LED side back surface opening 243 from theback surface 22 side. When viewed in the z direction, the LED-side backsurface opening 243 is included in the LED-side backsurface electrode portion 313. A portion of the LED-side backsurface electrode portion 313 that overlaps the LED-side backsurface opening 243 when viewed in the z direction is stacked with the LED-sidebottom surface portion 311.

ワイヤ側側面部322は、ワイヤ側側面252の一部を覆っている。図1に示すように、ワイヤ側側面部322は、LED側側面部312からy方向に離間しておりLED側側面部312に対して絶縁されている。  The wireside surface part 322 covers a part of thewire side surface 252. As shown in FIG. 1, the wireside surface portion 322 is separated from the LEDside surface portion 312 in the y direction and is insulated from the LEDside surface portion 312.

ワイヤ側底面部321は、ワイヤ側側面部322に裏面22側から繋がるとともにワイヤ側裏面開口部253を塞いでいる。ワイヤ側底面部321には、ワイヤ5がボンディングされている。  The wire-sidebottom surface portion 321 is connected to the wire-sideside surface portion 322 from theback surface 22 side and closes the wire-side backsurface opening 253. Thewire 5 is bonded to the wire sidebottom surface portion 321.

ワイヤ側裏面電極部323は、裏面22側からワイヤ側裏面開口部253を覆っている。z方向視において、ワイヤ側裏面開口部253は、ワイヤ側裏面電極部323に内包されている。ワイヤ側裏面電極部323のうちz方向視においてワイヤ側裏面開口部253と重なる部分は、ワイヤ側底面部321と積層されている。  The wire-side backsurface electrode portion 323 covers the wire-side back surface opening 253 from theback surface 22 side. When viewed in the z direction, the wire-side backsurface opening 253 is included in the wire-side backsurface electrode portion 323. A portion of the wire-side backsurface electrode portion 323 that overlaps the wire-side backsurface opening 253 when viewed in the z direction is stacked with the wire-sidebottom surface portion 321.

本実施形態においても、図5に示すように、各収容凹部23において、LED収容部24とワイヤ収容部25とは、y方向に並んで繋がっている。x方向において隣り合う図示された2つの収容凹部23どうしは、y方向におけるLED収容部24に対するワイヤ収容部25の位置が互いに反対であり、いわゆる千鳥配置とされている。  Also in the present embodiment, as shown in FIG. 5, in eachhousing recess 23, theLED housing portion 24 and thewire housing portion 25 are connected side by side in the y direction. The twohousing recesses 23 shown adjacent in the x direction have a so-called zigzag arrangement in which the positions of thewire housing portions 25 relative to theLED housing portions 24 in the y direction are opposite to each other.

また、本実施形態においても、図1で説明した距離Dxが、半径Rの2倍よりも小である点は同様である。これは、2つの収容凹部23のLED収容部24の一部どうしが、x方向において重なる位置関係にあることによる。  Also in the present embodiment, the point that the distance Dx described in FIG. 1 is smaller than twice the radius R is the same. This is because a part of theLED housing portions 24 of the twohousing recesses 23 overlap each other in the x direction.

本実施形態によっても、LED発光装置A2の小型化を図ることができる。また、本実施形態においては、LED側底面部311およびLED側裏面電極部313とワイヤ側底面部321およびワイヤ側裏面電極部323が基材2を介することなく積層されている。これにより、LED発光装置A2の薄型化を図ることができる。  Also according to this embodiment, the LED light emitting device A2 can be downsized. In the present embodiment, the LED-sidebottom surface portion 311 and the LED-side backsurface electrode portion 313, the wire-sidebottom surface portion 321 and the wire-side backsurface electrode portion 323 are stacked without the base material 2 interposed therebetween. Thereby, thickness reduction of LED light-emitting device A2 can be achieved.

図8は、本発明の第三実施形態に基づくLED発光装置を示している。本実施形態のLED発光装置A3は、LED収容部24がLED側裏面開口部243を有しており、ワイヤ収容部25がワイヤ側底面251を有している。  FIG. 8 shows an LED light-emitting device according to the third embodiment of the present invention. In the LED light emitting device A3 of the present embodiment, theLED housing portion 24 has an LED-side backsurface opening 243, and thewire housing portion 25 has a wire-side bottom surface 251.

LED収容部24は、LED側側面242およびLED側裏面開口部243を有する。LED側裏面開口部243は、裏面22に開口している。LED側側面242は、主面開口部231とLED側裏面開口部243とに繋がっており、基材2の厚さ方向全域に設けられている。本実施形態においても、主面開口部231のうちLED側側面242に繋がる部分とLED側裏面開口部243とは、z方向視において円形状である。  TheLED housing portion 24 includes anLED side surface 242 and an LED side backsurface opening 243. The LED-side backsurface opening 243 opens to theback surface 22. TheLED side surface 242 is connected to the main surface opening 231 and the LED side backsurface opening 243, and is provided in the entire thickness direction of the substrate 2. Also in the present embodiment, the portion connected to theLED side surface 242 and the LED side back surface opening 243 in the main surface opening 231 are circular when viewed in the z direction.

ワイヤ収容部25は、本実施形態においては、ワイヤ側底面251およびLED側側面242を有する。  Thewire accommodating portion 25 has a wire sidebottom surface 251 and anLED side surface 242 in the present embodiment.

ワイヤ側側面252は、主面開口部231に繋がっている。本実施形態においては、ワイヤ側側面252は、z方向において主面21に向かうほど厚さ方向と直角である断面が大となるように傾斜している。  Thewire side surface 252 is connected to themain surface opening 231. In the present embodiment, thewire side surface 252 is inclined so that the cross section perpendicular to the thickness direction becomes larger toward themain surface 21 in the z direction.

ワイヤ側底面251は、ワイヤ側側面252に裏面22側から繋がる。ワイヤ側底面251は、裏面22から離間しており、裏面22とはz方向において反対側を向く面である。また、ワイヤ側底面251は、LED側裏面開口部243よりも厚さ方向において主面21側に位置する。  The wire sidebottom surface 251 is connected to the wireside side surface 252 from theback surface 22 side. The wire-side bottom surface 251 is a surface that is separated from theback surface 22 and faces away from theback surface 22 in the z direction. Further, the wire sidebottom surface 251 is located closer to themain surface 21 side in the thickness direction than the LED side backsurface opening 243.

配線パターン3は、LED側底面部311、LED側側面部312、LED側裏面電極部313、ワイヤ側底面部321、ワイヤ側側面部322、ワイヤ側裏面電極部323およびワイヤ側スルーホール部324を有する。  Thewiring pattern 3 includes an LED sidebottom surface portion 311, an LED sideside surface portion 312, an LED side backsurface electrode portion 313, a wire sidebottom surface portion 321, a wire sideside surface portion 322, a wire side backsurface electrode portion 323, and a wire side throughhole portion 324. Have.

LED側側面部312は、LED側側面242の少なくとも一部を覆う。本実施形態においては、LED側側面部312は、LED側側面242のすべてを覆っている。  TheLED side surface 312 covers at least a part of theLED side surface 242. In the present embodiment, theLED side surface 312 covers all of the LED side surfaces 242.

LED側底面部311は、LED側側面部312に裏面22側から繋がるとともにLED側裏面開口部243を塞いでいる。LED側底面部311には、LEDチップ4が接合されている。  The LED sidebottom surface portion 311 is connected to the LED sideside surface portion 312 from theback surface 22 side and closes the LED side backsurface opening 243. TheLED chip 4 is bonded to the LED sidebottom surface portion 311.

LED側裏面電極部313は、裏面22側からLED側裏面開口部243を覆っている。z方向視において、LED側裏面開口部243は、LED側裏面電極部313に内包されている。LED側裏面電極部313のうちz方向視においてLED側裏面開口部243と重なる部分は、LED側底面部311と積層されている。  The LED side backsurface electrode portion 313 covers the LED side back surface opening 243 from theback surface 22 side. When viewed in the z direction, the LED-side backsurface opening 243 is included in the LED-side backsurface electrode portion 313. A portion of the LED-side backsurface electrode portion 313 that overlaps the LED-side backsurface opening 243 when viewed in the z direction is stacked with the LED-sidebottom surface portion 311.

ワイヤ側側面部322は、ワイヤ側側面252の一部を覆っている。図1に示すように、ワイヤ側側面部322は、LED側側面部312からy方向に離間しておりLED側側面部312に対して絶縁されている。  The wireside surface part 322 covers a part of thewire side surface 252. As shown in FIG. 1, the wireside surface portion 322 is separated from the LEDside surface portion 312 in the y direction and is insulated from the LEDside surface portion 312.

ワイヤ側底面部321は、ワイヤ側底面251の一部を覆っている。図1に示すように、ワイヤ側底面部321は、LED側側面部312からy方向に離間しておりLED側側面部312に対して絶縁されている。図示された例においては、ワイヤ側底面部321のy方向端縁とワイヤ側側面部322のy方向端縁とは、z方向視において直線をなす。  The wire sidebottom surface portion 321 covers a part of the wire sidebottom surface 251. As shown in FIG. 1, the wire-sidebottom surface portion 321 is separated from the LED-sideside surface portion 312 in the y direction and is insulated from the LED-sideside surface portion 312. In the illustrated example, the y-direction end edge of the wire-sidebottom surface portion 321 and the y-direction end edge of the wire-sideside surface portion 322 form a straight line when viewed in the z-direction.

ワイヤ側裏面電極部323は、裏面22に形成されており、LED発光装置A1を回路基板等に実装する際の接合箇所として用いられる。ワイヤ側スルーホール部324は、基材2をz方向に貫通し且つワイヤ側底面部321とワイヤ側裏面電極部323とを導通させている。  The wire-side backsurface electrode part 323 is formed on theback surface 22 and is used as a joint portion when the LED light emitting device A1 is mounted on a circuit board or the like. The wire-side through-hole portion 324 penetrates the base material 2 in the z direction and electrically connects the wire-sidebottom surface portion 321 and the wire-side backsurface electrode portion 323.

本実施形態においても、各収容凹部23において、LED収容部24とワイヤ収容部25とは、y方向に並んで繋がっている。x方向において隣り合う図示された2つの収容凹部23どうしは、y方向におけるLED収容部24に対するワイヤ収容部25の位置が互いに反対であり、いわゆる千鳥配置とされている。  Also in the present embodiment, in eachhousing recess 23, theLED housing portion 24 and thewire housing portion 25 are connected side by side in the y direction. The twohousing recesses 23 shown adjacent in the x direction have a so-called zigzag arrangement in which the positions of thewire housing portions 25 relative to theLED housing portions 24 in the y direction are opposite to each other.

また、本実施形態においても、図1で説明した距離Dxが、半径Rの2倍よりも小である点は同様である。これは、2つの収容凹部23のLED収容部24の一部どうしが、x方向において重なる位置関係にあることによる。  Also in the present embodiment, the point that the distance Dx described in FIG. 1 is smaller than twice the radius R is the same. This is because a part of theLED housing portions 24 of the twohousing recesses 23 overlap each other in the x direction.

本実施形態によっても、LED発光装置A3の小型化を図ることができる。また、LED側底面部311とLED側裏面電極部313とが基材2を介することなく積層されていることにより、LED発光装置A3の薄型化を図ることができる。また、ワイヤ側側面252がz方向においてLED側裏面開口部243よりも主面21側に位置していることにより、ワイヤ5の長さを縮小することが可能である。また、ワイヤ5をボンディングするためのキャピラリ等とワイヤ側側面252の干渉を回避する点において有利である。  Also according to this embodiment, the LED light emitting device A3 can be downsized. Moreover, the LED light emitting device A3 can be thinned by laminating the LED sidebottom surface portion 311 and the LED side backsurface electrode portion 313 without the base material 2 interposed therebetween. In addition, since thewire side surface 252 is located closer to themain surface 21 than the LED side back surface opening 243 in the z direction, the length of thewire 5 can be reduced. Further, it is advantageous in that interference between the capillary for bonding thewire 5 and thewire side surface 252 is avoided.

本発明に係るLED発光装置は、上述した実施形態に限定されるものではない。本発明に係るLED発光装置の各部の具体的な構成は、種々に設計変更自在である。  The LED light emitting device according to the present invention is not limited to the above-described embodiment. The specific configuration of each part of the LED light emitting device according to the present invention can be varied in design in various ways.

A1〜A3:LED発光装置
1 :基板
2 :基材
3 :配線パターン
4 :LEDチップ
5 :ワイヤ
6 :透光樹脂
21 :主面
22 :裏面
23 :収容凹部
24 :LED収容部
25 :ワイヤ収容部
231 :主面開口部
241 :LED側底面
242 :LED側側面
243 :LED側裏面開口部
251 :ワイヤ側底面
252 :ワイヤ側側面
253 :ワイヤ側裏面開口部
311 :LED側底面部
312 :LED側側面部
313 :LED側裏面電極部
314 :LED側スルーホール部
321 :ワイヤ側底面部
322 :ワイヤ側側面部
323 :ワイヤ側裏面電極部
324 :ワイヤ側スルーホール部
Dx :距離
R :半径
A1 to A3: LED light emitting device 1: substrate 2: base material 3: wiring pattern 4: LED chip 5: wire 6: translucent resin 21: main surface 22: back surface 23: housing recess 24: LED housing portion 25: wire housing Part 231: Main surface opening 241: LED side bottom 242: LED side side 243: LED side back opening 251: Wire side bottom 252: Wire side side 253: Wire side back opening 311: LED side bottom 312: LED Side surface portion 313: LED side back surface electrode portion 314: LED side through hole portion 321: Wire side bottom surface portion 322: Wire side side surface portion 323: Wire side back surface electrode portion 324: Wire side through hole portion Dx: Distance R: Radius

Claims (31)

Translated fromJapanese
厚さ方向において互いに反対側を向く主面および裏面を有する基材および当該基材に形成された配線パターンを具備する基板と、
前記基板に搭載された複数のLEDチップと、
各々が前記LEDチップと前記配線パターンとを導通させる複数のワイヤと、を備えたLED発光装置であって、
前記基材は、各々が主面に開口する主面開口部と当該主面開口部か前記裏面側に繋がるLED収容部およびワイヤ収容部とを含む複数の収容凹部を有し、
前記複数のLEDチップは、各々が前記厚さ方向視においてそのすべてが前記LED収容部に収容され且つ前記厚さ方向においてそのすべてが前記LED収容部に収容されており、
前記複数のワイヤは、各々が前記厚さ方向視においてその一部が前記ワイヤ収容部に収容され且つ前記厚さ方向において前記一部が前記ワイヤ収容部に収容されており、
前記LED収容部と前記ワイヤ収容部とは、前記厚さ方向に直角である第一方向に並んで繋がっており、
前記厚さ方向および前記第一方向のいずれに対しても直角である第二方向において隣り合う収容凹部どうしは、前記第一方向におけるLED収容部に対するワイヤ収容部の位置が互いに反対であることを特徴とする、LED発光装置。
A base material having a main surface and a back surface facing opposite sides in the thickness direction, and a substrate having a wiring pattern formed on the base material;
A plurality of LED chips mounted on the substrate;
Each of the LED light-emitting devices comprising a plurality of wires for electrically connecting the LED chip and the wiring pattern,
The base has a plurality of housing recesses including a main surface opening that opens to the main surface and an LED housing and a wire housing that are connected to the main surface opening or the back side,
Each of the plurality of LED chips is housed in the LED housing portion as viewed in the thickness direction, and is housed in the LED housing portion in the thickness direction.
Each of the plurality of wires is housed in the wire housing part in the thickness direction view, and the part is housed in the wire housing part in the thickness direction;
The LED housing portion and the wire housing portion are connected side by side in a first direction perpendicular to the thickness direction,
The housing recesses adjacent in the second direction perpendicular to both the thickness direction and the first direction are such that the positions of the wire housing portions relative to the LED housing portions in the first direction are opposite to each other. An LED light-emitting device that is characterized.
前記LED収容部は、前記主面開口部に繋がるLED側側面を有する、請求項1に記載のLED発光装置。  The LED light-emitting device according to claim 1, wherein the LED housing portion has an LED side surface connected to the main surface opening. 前記LED側側面は、前記厚さ方向において前記主面に向かうほど前記厚さ方向と直角である断面が大となるように傾斜している、請求項2に記載のLED発光装置。  The LED light-emitting device according to claim 2, wherein the LED side surface is inclined such that a cross section perpendicular to the thickness direction becomes larger toward the main surface in the thickness direction. 前記配線パターンは、前記LED側側面の少なくとも一部を覆うLED側側面部を有する、請求項2または3に記載のLED発光装置。  4. The LED light emitting device according to claim 2, wherein the wiring pattern has an LED side surface portion that covers at least a part of the LED side surface. 前記LED側側面部は、前記LED側側面のすべてを覆っている、請求項4に記載のLED発光装置。  The LED light emitting device according to claim 4, wherein the LED side surface portion covers all of the LED side surface. 前記ワイヤ収容部は、前記主面開口部に繋がるワイヤ側側面を有する、請求項4または5に記載のLED発光装置。  The LED light-emitting device according to claim 4, wherein the wire accommodating portion has a wire side surface connected to the main surface opening. 前記ワイヤ側側面は、前記厚さ方向において前記主面に向かうほど前記厚さ方向と直角である断面が大となるように傾斜している、請求項6に記載のLED発光装置。  The LED light-emitting device according to claim 6, wherein the side surface on the wire side is inclined so that a cross section perpendicular to the thickness direction becomes larger toward the main surface in the thickness direction. 前記配線パターンは、前記ワイヤ側側面の一部を覆うワイヤ側側面部を有する、請求項6または7に記載のLED発光装置。  The LED light-emitting device according to claim 6, wherein the wiring pattern has a wire side surface portion that covers a part of the wire side surface. 前記LED収容部は、前記LED側側面に前記裏面側から繋がるLED側底面を有する、請求項6ないし8のいずれかに記載のLED発光装置。  The LED light emitting device according to claim 6, wherein the LED housing portion has an LED side bottom surface connected to the LED side surface from the back surface side. 前記主面開口部のうち前記LED側側面に繋がる部分と前記LED側底面とは、前記厚さ方向視において円形状である、請求項9に記載のLED発光装置。  The LED light-emitting device according to claim 9, wherein a portion connected to the LED side surface and the LED side bottom surface in the main surface opening are circular in the thickness direction view. 前記配線パターンは、前記LED側底面を覆い且つ前記LEDチップが接合されたLED側底面部を有する、請求項9または10に記載のLED発光装置。  11. The LED light-emitting device according to claim 9, wherein the wiring pattern has an LED-side bottom surface portion that covers the LED-side bottom surface and to which the LED chip is bonded. 前記配線パターンは、前記基材の前記裏面に形成されたLED側裏面電極部と、前記基材を前記厚さ方向に貫通し且つ前記LED側底面部と前記LED側裏面電極部とを導通させるLED側スルーホール部と、を有する、請求項11に記載のLED発光装置。  The said wiring pattern penetrates the said base material in the said thickness direction at the said back surface of the said base material in the said thickness direction, and conducts the said LED side bottom face part and the said LED side back surface electrode part. The LED light-emitting device according to claim 11, further comprising: an LED side through hole portion. 前記ワイヤ収容部は、前記ワイヤ側側面に前記裏面側から繋がるワイヤ側底面を有する、請求項9ないし12のいずれかに記載のLED発光装置。  The LED light-emitting device according to claim 9, wherein the wire housing portion has a wire-side bottom surface connected to the wire-side side surface from the back surface side. 前記主面開口部のうち前記ワイヤ側側面に繋がる部分と前記ワイヤ側底面とは、前記厚さ方向視において矩形状である、請求項13に記載のLED発光装置。  The LED light-emitting device according to claim 13, wherein a portion connected to the wire-side side surface and the wire-side bottom surface of the main surface opening are rectangular in the thickness direction view. 前記配線パターンは、前記ワイヤ側底面の一部を覆い且つワイヤがボンディングされたワイヤ側底面部を有する、請求項13または14に記載のLED発光装置。  The LED light-emitting device according to claim 13 or 14, wherein the wiring pattern has a wire-side bottom surface portion that covers a part of the wire-side bottom surface and is bonded with a wire. 前記配線パターンは、前記基材の前記裏面に形成されたワイヤ側裏面電極部と、前記基材を前記厚さ方向に貫通し且つ前記ワイヤ側底面部と前記ワイヤ側裏面電極部とを導通させるワイヤ側スルーホール部と、を有する、請求項15に記載のLED発光装置。  The wiring pattern includes a wire-side back surface electrode portion formed on the back surface of the base material, and penetrates the base material in the thickness direction and electrically connects the wire-side bottom surface portion and the wire-side back surface electrode portion. The LED light-emitting device according to claim 15, further comprising a wire-side through-hole portion. 前記ワイヤ側底面は、前記LED側底面よりも前記厚さ方向において前記主面側に位置する、請求項13ないし16のいずれかに記載のLED発光装置。  The LED light emitting device according to claim 13, wherein the wire side bottom surface is located closer to the main surface side in the thickness direction than the LED side bottom surface. 前記LED収容部は、前記裏面に開口するLED側裏面開口部を有する、請求項8に記載のLED発光装置。  The LED light-emitting device according to claim 8, wherein the LED housing portion has an LED-side back surface opening portion that opens to the back surface. 前記主面開口部のうち前記LED側側面に繋がる部分と前記LED側裏面開口部とは、前記厚さ方向視において円形状である、請求項18に記載のLED発光装置。  The LED light-emitting device according to claim 18, wherein a portion of the main surface opening connected to the LED side surface and the LED side back surface opening are circular in the thickness direction view. 前記配線パターンは、前記LED側側面部に前記裏面側から繋がるとともに前記LED側裏面開口部を塞ぎ且つ前記LEDチップが接合されたLED側底面部を有する、請求項18または19に記載のLED発光装置。  The LED light emission according to claim 18 or 19, wherein the wiring pattern has an LED side bottom surface portion that is connected to the LED side surface portion from the back surface side, closes the LED side back surface opening portion, and is joined to the LED chip. apparatus. 前記配線パターンは、前記裏面側から前記LED側裏面開口部を覆い且つ前記LED側底面部と積層されたLED側裏面電極部を有する、請求項20に記載のLED発光装置。  21. The LED light-emitting device according to claim 20, wherein the wiring pattern includes an LED-side back surface electrode portion that covers the LED-side back surface opening from the back surface side and is laminated with the LED-side bottom surface portion. 前記ワイヤ収容部は、前記裏面に開口するワイヤ側裏面開口部を有する、請求項18ないし21のいずれかに記載のLED発光装置。  The LED light-emitting device according to claim 18, wherein the wire housing portion has a wire-side back surface opening portion that opens to the back surface. 前記主面開口部のうち前記ワイヤ側側面に繋がる部分と前記ワイヤ側裏面開口部とは、前記厚さ方向視において矩形状である、請求項22に記載のLED発光装置。  23. The LED light emitting device according to claim 22, wherein a portion of the main surface opening connected to the wire side surface and the wire side back surface opening are rectangular in the thickness direction view. 前記配線パターンは、前記ワイヤ側側面部に前記裏面側から繋がるとともに前記ワイヤ側裏面開口部を塞ぎ且つ前記ワイヤがボンディングされたワイヤ側底面部を有する、請求項22または23に記載のLED発光装置。  The LED light-emitting device according to claim 22 or 23, wherein the wiring pattern has a wire-side bottom surface portion that is connected to the wire-side side surface portion from the back surface side, closes the wire-side back surface opening, and is bonded to the wire. . 前記配線パターンは、前記裏面側から前記LED側裏面開口部を覆い且つ前記ワイヤ側底面部と積層されたワイヤ側裏面電極部を有する、請求項24に記載のLED発光装置。  25. The LED light-emitting device according to claim 24, wherein the wiring pattern has a wire-side back surface electrode portion that covers the LED-side back surface opening from the back surface side and is laminated with the wire-side bottom surface portion. 前記ワイヤ収容部は、前記ワイヤ側側面に前記裏面側から繋がるワイヤ側底面を有する、請求項18ないし21のいずれかに記載のLED発光装置。  The LED light emitting device according to any one of claims 18 to 21, wherein the wire housing portion has a wire side bottom surface connected to the wire side surface from the back surface side. 前記主面開口部のうち前記ワイヤ側側面に繋がる部分と前記ワイヤ側底面とは、前記厚さ方向視において矩形状である、請求項26に記載のLED発光装置。  27. The LED light-emitting device according to claim 26, wherein a portion connected to the wire-side side surface and the wire-side bottom surface of the main surface opening are rectangular when viewed in the thickness direction. 前記配線パターンは、前記ワイヤ側底面の一部を覆い且つワイヤがボンディングされたワイヤ側底面部を有する、請求項26または27に記載のLED発光装置。  28. The LED light-emitting device according to claim 26, wherein the wiring pattern has a wire-side bottom surface portion that covers a part of the wire-side bottom surface and to which a wire is bonded. 前記配線パターンは、前記基材の前記裏面に形成されたワイヤ側裏面電極部と、前記基材を前記厚さ方向に貫通し且つ前記ワイヤ側底面部と前記ワイヤ側裏面電極部とを導通させるワイヤ側スルーホール部と、を有する、請求項28に記載のLED発光装置。  The wiring pattern includes a wire-side back surface electrode portion formed on the back surface of the base material, and penetrates the base material in the thickness direction and electrically connects the wire-side bottom surface portion and the wire-side back surface electrode portion. The LED light-emitting device according to claim 28, further comprising a wire-side through-hole portion. 前記ワイヤ側底面は、前記LED側裏面開口部よりも前記厚さ方向において前記主面側に位置する、請求項26ないし29のいずれかに記載のLED発光装置。  30. The LED light emitting device according to claim 26, wherein the wire side bottom surface is located closer to the main surface side in the thickness direction than the LED side back surface opening. 前記LEDチップを覆い且つ前記LEDチップからの光を透過させる透光樹脂をさらに備える、請求項1ないし30のいずれかに記載のLED発光装置。  The LED light-emitting device according to claim 1, further comprising a translucent resin that covers the LED chip and transmits light from the LED chip.
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