JPH04162576A - Light emitting diode - Google Patents

Light emitting diode

Info

Publication number
JPH04162576A
JPH04162576A JP2287670A JP28767090A JPH04162576A JP H04162576 A JPH04162576 A JP H04162576A JP 2287670 A JP2287670 A JP 2287670A JP 28767090 A JP28767090 A JP 28767090A JP H04162576 A JPH04162576 A JP H04162576A
Authority
JP
Japan
Prior art keywords
light emitting
emitting diode
tip
diode chip
lead frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2287670A
Other languages
Japanese (ja)
Inventor
Kenji Nishinakagawa
憲司 西中川
Masumi Nakamichi
眞澄 中道
Shoshichi Kato
加藤 昭七
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP2287670A priority Critical patent/JPH04162576A/en
Publication of JPH04162576A publication Critical patent/JPH04162576A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means 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
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805Shape
    • H01L2224/4809Loop shape
    • H01L2224/48091Arched
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means 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
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481Disposition
    • H01L2224/48151Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/48221Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/48245Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
    • H01L2224/48247Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item

Abstract

PURPOSE:To make it possible to reduce design and development time for light emitting diodes at low cost and improve the brightness of said light emitting diodes by installing a light emitting diode chip on the tip of a lead frame on one side at the reflected side of a reflecting cup, electrically connecting the tip of said lead frame with the tip of a lead frame on the other side with a wire, and molding these lead frames, the light emitting chip and the wire with transparent resin. CONSTITUTION:A light emitting diode 1 is provided with a reflecting cup 5 made of high heat resistant organic resin into which two lead frames 3 and 4 installed in parallel at a span are inserted where a light emitting diode chip 6 is installed at the tip of the lead frame 3 on one side at a reflected side 5a of the reflecting cup 5 and this light emitting diode chip 6 is electrically connected with the tip of the lead frame 4 with a wire 7 stretched between the two locations. Furthermore, these lead frames 3 and 4, the light emitting diode 6, and the wire 7 are molded with transparent resin 8.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、樹脂モールドタイプの発光ダイオードに関
する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a resin mold type light emitting diode.

(従来の技術) 従来の樹脂モールドタイプの発光ダイオードは、例えば
、第2図に示すようなものであった。
(Prior Art) A conventional resin mold type light emitting diode is, for example, as shown in FIG.

この従来の発光ダイオードは、一方の金属製のリードフ
レームaの先端部に設けられた反射カップbの上に発光
ダイオードチップCがダイポンドされている。
In this conventional light emitting diode, a light emitting diode chip C is die-bonded onto a reflective cup b provided at the tip of one metal lead frame a.

そして、この発光ダイオードチップC上の電極と、他方
の金属製のリードフレームdとがワイヤー線eで電気結
線されている。
The electrode on this light emitting diode chip C and the other metal lead frame d are electrically connected by a wire line e.

更に、これらの部材全体が、エポキシ樹脂等の透明樹脂
fでモールドされている。
Furthermore, these members are entirely molded with transparent resin f such as epoxy resin.

この透明樹脂fの先端部gは、凸型レンズ形状に形成さ
れている。
The tip g of this transparent resin f is formed into a convex lens shape.

そして、発光ダイオードチップCから発せられた光りが
、反射カップbによって反射され、透明樹脂fの凸型レ
ンズ形状先端部gで集光されて、この先りが前方に向け
て出射されるようになっている。
Then, the light emitted from the light emitting diode chip C is reflected by the reflection cup b, condensed by the convex lens-shaped tip g of the transparent resin f, and the light is emitted forward. ing.

(発明が解決しようとする課題) ところが、上記した従来の発光ダイオ−下においては、
発光ダイオードチップCの厚さと比較して数倍の深い反
射カップを構成することができなかった。
(Problem to be solved by the invention) However, under the above-mentioned conventional light emitting diode,
It was not possible to construct a reflective cup several times deeper than the thickness of the light emitting diode chip C.

このために、反射カップbによる反射光りを透明樹脂f
の凸型レンズ形状先端部gだけでは集光−できなかった
For this purpose, the light reflected by the reflective cup b is transferred to the transparent resin f.
It was not possible to condense light using only the tip g of the convex lens shape.

したがって、第3図に示すように、この反射光りが透明
樹脂fの側面から放出されたり、この側面部で反射され
て最悪の場合は、発光ダイオードの後方に向けて光りが
放出される場合があった。
Therefore, as shown in Figure 3, this reflected light may be emitted from the side surface of the transparent resin f, or in the worst case scenario, the light may be emitted toward the rear of the light emitting diode. there were.

これによって、前方に出射される光量が減少してしまう
といった問題があった。
This poses a problem in that the amount of light emitted forward is reduced.

一方、発光ダイオードの光りの指向性を変化させるには
、発光ダイオードチップCからの直接光りと反射カップ
bによる反射光りとの両方を制御することが必要である
On the other hand, in order to change the directivity of the light from the light emitting diode, it is necessary to control both the direct light from the light emitting diode chip C and the light reflected by the reflective cup b.

これには、透明樹脂fの凸型レンズ形状先端部gの形状
、反射カップbの大きさや深さを変更する必要がある。
For this purpose, it is necessary to change the shape of the convex lens-shaped tip g of the transparent resin f, and the size and depth of the reflective cup b.

ところが、これらの変更を行うには、透明樹脂fや反射
カップbを作製するための金型を修正するか、もしくは
変更する必要がある。
However, in order to make these changes, it is necessary to modify or change the mold for producing the transparent resin f and the reflective cup b.

このために、修正あるいは変更するのに有する時間が多
くかかり、このための費用も多くかかるので金型の作製
が非常に困難であるといった問題があった。
This poses a problem in that it takes a lot of time to make corrections or changes, and it also costs a lot of money, making it very difficult to manufacture the mold.

この発明の課題は、これらの従来の問題を解決すること
にある。
An object of this invention is to solve these conventional problems.

(課題を解決するための手段) この発明は、上記課題を解決するために、2本のリード
フレームが間隔をもたせて並設してインサートされた高
耐熱性の有機樹脂からなる反射カップが備えられ、一方
のリードフレームの先端部に発光ダイオードチップが前
記反射カップの反射面に向けて搭載され、この発光ダイ
オードチップと他方のリードフレームの先端部との間に
ワイヤー線が張られて電気結線が行われ、これらのリー
ドフレーム、発光ダイオードチップ、ワイヤー線が透明
樹脂でモールドされているものとした。
(Means for Solving the Problems) In order to solve the above problems, the present invention includes a reflective cup made of a highly heat-resistant organic resin in which two lead frames are inserted in parallel with a space between them. A light emitting diode chip is mounted on the tip of one lead frame facing the reflective surface of the reflective cup, and a wire is stretched between the light emitting diode chip and the tip of the other lead frame to make an electrical connection. The lead frame, light emitting diode chip, and wire were molded with transparent resin.

(作用) 上記構成により、反射カップの反射面は大きく且つ深く
形成することができ、しかも発光ダイオードチップが反
射カップの反射面に向けて搭載されているので、発光ダ
イオードチップから発せられた光は、全て反射カップの
反射面で反射されて、透明樹脂の先端部から前方へむけ
て出射される。
(Function) With the above configuration, the reflective surface of the reflective cup can be formed large and deep, and since the light emitting diode chip is mounted facing the reflective surface of the reflective cup, the light emitted from the light emitting diode chip is , are all reflected by the reflective surface of the reflective cup and emitted forward from the tip of the transparent resin.

また、反射カップの焦点近傍に発光ダイオードチップを
配することが可能であり、発光ダイオードチップや反射
カップの形状、透明樹脂の形状を変えることなく、しか
も光の利用効率を下げることなく、発光ダイオードチッ
プの位置を変化させるだけで、光の指向性を変えること
が可能である。
In addition, it is possible to place the light emitting diode chip near the focal point of the reflective cup, and the light emitting diode chip can be placed near the focal point of the reflective cup, without changing the shape of the light emitting diode chip, the reflective cup, or the shape of the transparent resin, and without reducing the light utilization efficiency. It is possible to change the directivity of light simply by changing the position of the chip.

(実施例) 以下、この発明に係る発光ダイオードの実施例について
、図面に基づいて説明する。
(Example) Hereinafter, an example of a light emitting diode according to the present invention will be described based on the drawings.

第1図はこの発明に係る発光ダイオードの一実施例の正
面図である。
FIG. 1 is a front view of an embodiment of a light emitting diode according to the present invention.

この発明に係る発光ダイオード1は、2本のリードフレ
ーム3,4が間隔をもたせて並設してインサートされた
高耐熱性の有機樹脂からなる反射カップ5が備えられて
いる。
The light emitting diode 1 according to the present invention is equipped with a reflective cup 5 made of a highly heat-resistant organic resin into which two lead frames 3 and 4 are inserted in parallel with a space between them.

そして、一方のリードフレーム3の先端部に発光ダイオ
ードチップ6が反射カップ5の反射面5aに向けて搭載
され、この発光ダイオードチップ6と他方のリードフレ
ーム4の先端部との間にワイヤー線7が張られて電気結
線が行われている。
A light emitting diode chip 6 is mounted on the tip of one lead frame 3 facing the reflective surface 5a of the reflective cup 5, and a wire 7 is connected between the light emitting diode chip 6 and the tip of the other lead frame 4. is installed and electrical connections are made.

更に、これらのリードフレーム3,4、発光タイオード
チップ6、ワイヤー線7が透明樹脂8でモールドされて
いる。
Furthermore, these lead frames 3 and 4, light emitting diode chip 6, and wire wire 7 are molded with transparent resin 8.

反射カップ5の反射面5aは、光軸に対して回転対称な
パラボラ(放物)形状に形成されている。
The reflective surface 5a of the reflective cup 5 is formed into a parabolic shape that is rotationally symmetrical with respect to the optical axis.

リードフレーム3.4は、反射カップ5に設けられた二
つの穴に突っ込まれていて、この反射カップ5で互いに
絶縁されている。
The lead frame 3.4 is inserted into two holes provided in a reflector cup 5 and is insulated from each other by this reflector cup 5.

反射カップ5はその反射面5aに、光反射性の高い金属
であるアルミニューム、クロム、銀等を蒸着、又はメツ
キ等の方法で作製した膜が付着されている。
The reflective cup 5 has a reflective surface 5a attached thereto with a film made of highly light-reflective metals such as aluminum, chromium, silver, etc. by vapor deposition or plating.

透明樹脂8はエポキシ等の合成樹脂で形成され、その先
端部8aが凸型レンズ形状に形成されてぃる。
The transparent resin 8 is made of synthetic resin such as epoxy, and its tip 8a is formed into a convex lens shape.

この発光ダイオード1は、上記構成により、反射カップ
50反射面5aを大きく且つ深く形成することができ、
しかも発光ダイオードチップ6が反射カップ50反射面
5aに向けて搭載されているので、発光ダイオードチッ
プ6から発せられた光は、全て反射カップ5の反射面5
aで反射されて、透明樹脂8の凸型形状先端部8aから
前方へむけて出射される。
With the above configuration, the light emitting diode 1 can form the reflective surface 5a of the reflective cup 50 large and deep,
Moreover, since the light emitting diode chip 6 is mounted facing the reflective surface 5a of the reflective cup 50, all the light emitted from the light emitting diode chip 6 is directed toward the reflective surface 5 of the reflective cup 5.
The light is reflected by a, and is emitted forward from the convex tip 8a of the transparent resin 8.

また、反射カップ5の焦点近傍に発光ダイオードチップ
6を配することが可能であり、発光ダイオードチップ6
や反射カップ5の形状、透明樹脂8の形状を変えること
なく、しかも光の利用効率を下げることなく、リードフ
レーム3.4の透明樹脂8への突っ込み長さを変えて発
光ダイオードチンプロの位置を変化させるだけで、光の
指向性を変えることが可能である。
Further, it is possible to arrange the light emitting diode chip 6 near the focal point of the reflective cup 5, and the light emitting diode chip 6
The position of the light emitting diode can be changed by changing the length of the lead frame 3.4 into the transparent resin 8 without changing the shape of the reflective cup 5 or the shape of the transparent resin 8, and without reducing the light utilization efficiency. It is possible to change the directivity of light simply by changing the

尚、上記実施例では、透明樹脂8の先端部8aが凸型レ
ンズ形状をしたものについて説明したが、これに限らず
、透明樹脂8の先端部8aを平面形状とすることもでき
る。
In the above embodiment, the tip 8a of the transparent resin 8 has a convex lens shape, but the tip 8a of the transparent resin 8 can also have a planar shape.

このように、透明樹脂8の先端部8aを平面形状とする
ことによって、発光ダイオード千ツブ6を反射カップ5
における反射面5aの焦点位置におくと、平行光を発す
る発光ダイオードを作製することが可能であり、他に類
をみない優れた光輝度化、光指向性を得ることができる
In this way, by making the tip 8a of the transparent resin 8 into a planar shape, the light emitting diode 6 can be connected to the reflective cup 5.
When placed at the focal point of the reflecting surface 5a in , it is possible to produce a light emitting diode that emits parallel light, and it is possible to obtain unparalleled excellent light brightness and light directivity.

(発明の効果) 以上説明したように、この発明によれば、反射カップの
形状や、透明樹脂の形状を変更することなく、光の指向
性を変化させることができる。
(Effects of the Invention) As described above, according to the present invention, the directivity of light can be changed without changing the shape of the reflective cup or the shape of the transparent resin.

このことにより、反射カップや透明樹脂を作製するため
の金型等を変更する必要がない。
As a result, there is no need to change the mold or the like for producing the reflective cup or the transparent resin.

したがって、発光ダイオードの設計開発が短時間で且つ
安価な費用で対応できる。
Therefore, the design and development of the light emitting diode can be done in a short time and at low cost.

また、反射カップの反射面を大きく且つ深く形成するこ
とができ、しかも発光ダイオードチップが反射カップの
反射面に向けて搭載されているので、発光ダイオードチ
ップから発せられた光を、全て反射カップの反射面で反
射させて、透明樹脂の先端部から前方へむけて出射させ
ることができる。
In addition, the reflective surface of the reflective cup can be made large and deep, and since the light emitting diode chip is mounted facing the reflective surface of the reflective cup, all the light emitted from the light emitting diode chip is transferred to the reflective cup. It can be reflected by a reflective surface and emitted forward from the tip of the transparent resin.

しかも、発光ダイオードチップを反射カップの反射面の
焦点位置近傍に配することによって、光の反射効率を良
くすることができ、発光ダイオードの輝度アップを図る
ことができる等の効果を奏する。
In addition, by arranging the light emitting diode chip near the focal point of the reflective surface of the reflective cup, the light reflection efficiency can be improved and the brightness of the light emitting diode can be increased.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明に係る発光ダイオードの一実施例を示
す正面図、第2図は従来例の発光ダイオードの正面図、
第3図は従来例の発光ダイオードにおける光線軌跡を示
す説明図である。 1・・・発光ダイオード 3.4・・・リードフレーム 5・・・反射カップ 5a・・・反射面 6・・・発光ダイオードチップ 7・・・ワイヤー線 8・・・透明樹脂 第1図
FIG. 1 is a front view showing an embodiment of a light emitting diode according to the present invention, FIG. 2 is a front view of a conventional light emitting diode,
FIG. 3 is an explanatory diagram showing a light ray trajectory in a conventional light emitting diode. 1... Light emitting diode 3.4... Lead frame 5... Reflective cup 5a... Reflective surface 6... Light emitting diode chip 7... Wire line 8... Transparent resin Figure 1

Claims (1)

【特許請求の範囲】 1)2本のリードフレームが間隔をもたせて並設してイ
ンサートされた高耐熱性の有機樹脂からなる反射カップ
が備えられ、 一方のリードフレームの先端部に発光ダイオードチップ
が前記反射カップの反射面に向けて搭載され、この発光
ダイオードチップと他方のリードフレームの先端部との
間にワイヤー線が張られて電気結線が行われ、これらの
リードフレーム、発光ダイオードチップ、ワイヤー線が
透明樹脂でモールドされていることを特徴とする発光ダ
イオード。
[Claims] 1) A reflective cup made of a highly heat-resistant organic resin is provided in which two lead frames are inserted side by side with a gap, and a light emitting diode chip is mounted at the tip of one of the lead frames. is mounted facing the reflective surface of the reflective cup, and a wire is stretched between this light emitting diode chip and the tip of the other lead frame to perform electrical connection, and these lead frames, light emitting diode chips, A light emitting diode characterized by wire wire molded with transparent resin.
JP2287670A 1990-10-24 1990-10-24 Light emitting diode Pending JPH04162576A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2287670A JPH04162576A (en) 1990-10-24 1990-10-24 Light emitting diode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2287670A JPH04162576A (en) 1990-10-24 1990-10-24 Light emitting diode

Publications (1)

Publication Number Publication Date
JPH04162576A true JPH04162576A (en) 1992-06-08

Family

ID=17720202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2287670A Pending JPH04162576A (en) 1990-10-24 1990-10-24 Light emitting diode

Country Status (1)

Country Link
JP (1) JPH04162576A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990013680A (en) * 1997-07-30 1999-02-25 사토겐이치로 Semiconductor light emitting device
EP1113506A3 (en) * 1999-12-28 2005-03-16 Toyoda Gosei Co., Ltd. Light emitting diode

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6084252A (en) * 1997-03-10 2000-07-04 Rohm Co., Ltd. Semiconductor light emitting device
KR19990013680A (en) * 1997-07-30 1999-02-25 사토겐이치로 Semiconductor light emitting device
EP1113506A3 (en) * 1999-12-28 2005-03-16 Toyoda Gosei Co., Ltd. Light emitting diode
US6906459B2 (en) 1999-12-28 2005-06-14 Toyoda Gosei Co., Ltd. Light emitting diode

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