JPH06177428A - Light-emitting diode lamp - Google Patents
Light-emitting diode lampInfo
- Publication number
- JPH06177428A JPH06177428A JP43A JP35088492A JPH06177428A JP H06177428 A JPH06177428 A JP H06177428A JP 43 A JP43 A JP 43A JP 35088492 A JP35088492 A JP 35088492A JP H06177428 A JPH06177428 A JP H06177428A
- Authority
- JP
- Japan
- Prior art keywords
- emitting diode
- light
- light emitting
- bowl
- diode element
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting 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
- H01L2224/48221—Connecting 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
- H01L2224/48245—Connecting 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
- H01L2224/48247—Connecting 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/484—Connecting portions
- H01L2224/48463—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond
- H01L2224/48465—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch
Landscapes
- Led Device Packages (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、発光ダイオード素子を
封止したドーム状のレンズ部からリード端子が導出され
てなる発光ダイオードランプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting diode lamp in which lead terminals are led out from a dome-shaped lens portion encapsulating a light emitting diode element.
【０００２】[0002]
【従来の技術】従来のこの種の発光ダイオードランプの
構成を図４を参照して説明する。図４（ａ）示すよう
に、この発光ダイオードランプは、一方のリード端子１
ａの先端に形成されたパラボラと称される碗状凹部２内
に発光ダイオード素子３を固着し、この発光ダイオード
素子３と他方のリード端子１ｂとを金属細線４で接続
し、発光ダイオード素子３および金属細線４を透光性樹
脂で封止してドーム状のレンズ部５を形成している。2. Description of the Related Art The structure of a conventional light emitting diode lamp of this type will be described with reference to FIG. As shown in FIG. 4A, this light emitting diode lamp has one lead terminal 1
A light emitting diode element 3 is fixed in a bowl-shaped recess 2 called a parabola formed at the tip of a, and the light emitting diode element 3 and the other lead terminal 1b are connected by a thin metal wire 4 to form a light emitting diode element 3 Further, the metal thin wire 4 is sealed with a translucent resin to form a dome-shaped lens portion 5.
【０００３】碗状凹部２は、その内部壁面の立ち上がり
角度が全周囲にわたって略同一になるように形成されて
いる。したがって、発光ダイオード素子３から水平方向
に照射された光は、碗状凹部２の内部壁面の全周囲につ
いて、略同一の角度で反射されて上方に導かれるので、
この発光ダイオードランプの指向性は、図４（ｂ），
（ｃ）に示すように、レンズ部５の光軸回りに均等であ
る。The bowl-shaped recess 2 is formed so that the rising angles of its inner wall surface are substantially the same over the entire circumference. Therefore, the light emitted from the light emitting diode element 3 in the horizontal direction is reflected at substantially the same angle with respect to the entire circumference of the inner wall surface of the bowl-shaped recess 2 and guided upward.
The directivity of this light emitting diode lamp is as shown in FIG.
As shown in (c), it is uniform around the optical axis of the lens unit 5.
【０００４】[0004]
【発明が解決しようとする課題】ところで、近年、多数
の発光ダイオードランプを二次元配置して、文字などを
表示するドットマトリクス表示装置が提案実施されてい
る。図５に示すように、このような表示装置６は、複数
人の観察者によって任意の位置から見られるが、各観察
者の視線の高さには大差がない。したがって、表示装置
６は、左右方向については広い指向性を備えていること
が好ましいが、上下方向について狭い指向性で足りる。By the way, in recent years, a dot matrix display device has been proposed in which a large number of light emitting diode lamps are two-dimensionally arranged to display characters and the like. As shown in FIG. 5, such a display device 6 can be seen by a plurality of observers from any position, but there is no great difference in the height of the line of sight of each observer. Therefore, the display device 6 preferably has a wide directivity in the left-right direction, but a narrow directivity in the vertical direction is sufficient.
【０００５】このような指向特性上の要請に反して、上
述した従来の発光ダイオードランプは、全周囲に同じ指
向性を備えているので、表示装置６の左右の指向性を拡
げようとすると、必然的に、上下の指向性が拡がる。そ
の結果、観察者に認識されない余分な光が上下方向に放
出されることになるので、観察者から見た表示装置６の
光度を充分に上げることができないという問題点があ
る。逆に、上下の指向性を狭くして光度を上げようとす
ると、左右の指向性が狭くなり、表示装置６に対面して
ない観察者は、その表示内容が見づらくなる。Contrary to the demands on the directional characteristics, the above-mentioned conventional light emitting diode lamp has the same directivity around the entire circumference, and therefore, when the left and right directivity of the display device 6 is widened, Inevitably, the vertical directivity expands. As a result, since extra light that is not recognized by the observer is emitted in the vertical direction, there is a problem that the luminous intensity of the display device 6 viewed from the observer cannot be sufficiently increased. On the contrary, if the upper and lower directivities are narrowed and the luminous intensity is increased, the left and right directivities are narrowed, and it is difficult for an observer not facing the display device 6 to see the display content.
【０００６】本発明は、このような事情に鑑みてなされ
たものであって、ドットマトリクス表示装置などに利用
されるのに適した発光ダイオードランプを提供すること
を目的としている。The present invention has been made in view of the above circumstances, and an object thereof is to provide a light emitting diode lamp suitable for use in a dot matrix display device or the like.
【０００７】[0007]
【課題を解決するための手段】本発明は、このような目
的を達成するために、次のような構成をとる。すなわ
ち、本発明は、一方のリード端子の先端に形成された碗
状凹部内に発光ダイオード素子を固着し、前記発光ダイ
オード素子と他方のリード端子とを金属細線で接続し、
前記発光ダイオード素子および金属細線を透光性樹脂で
封止した発光ダイオードランプにおいて、前記碗状凹部
は、直交する各縦断面において、一方の内部壁面が緩慢
な立ち上がり角度をもち、他方の内部壁面が急峻な立ち
上がり角度をもつものである。The present invention has the following constitution in order to achieve such an object. That is, the present invention, the light emitting diode element is fixed in the bowl-shaped recess formed at the tip of one of the lead terminals, the light emitting diode element and the other lead terminal are connected by a thin metal wire,
In the light-emitting diode lamp in which the light-emitting diode element and the thin metal wire are sealed with a light-transmissive resin, the bowl-shaped recesses have a slow rising angle on one inner wall surface and the other inner wall surface in each vertical cross section orthogonal to each other. Has a steep rising angle.
【０００８】[0008]
【作用】本発明の作用は次のとおりである。すなわち、
発光ダイオード素子が固着される碗状凹部の内部壁面
が、直交する各縦断面において、一方が緩慢な立ち上が
り角度をもち、他方が急峻な立ち上がり角度をもつの
で、緩慢な立ち上がり角度の壁面で反射された光は広い
範囲に拡がって放出され、一方、急峻な立ち上がり角度
の壁面で反射された光は狭い範囲内で放出される。した
がって、この発光ダイオードランプは、直交する方向で
広狭二つの指向性をもつことになる。The operation of the present invention is as follows. That is,
The inner wall surface of the bowl-shaped recess to which the light-emitting diode element is fixed has a slow rising angle on one side and a steep rising angle on the other side in each vertical cross section, so it is reflected by the wall surface with a slow rising angle. The emitted light is spread and emitted in a wide range, while the light reflected by the wall surface having a steep rising angle is emitted in a narrow range. Therefore, this light emitting diode lamp has two directivities, which are wide and narrow in orthogonal directions.
【０００９】[0009]
【実施例】以下、図面を参照して本発明の一実施例を説
明する。図１は、実施例に係る発光ダイオードランプの
リード端子先端部の構造を示しており、同図（ａ）は平
面図、同図（ｂ）は（ａ）のＸ−Ｘ矢視断面図、同図
（ｃ）は（ａ）のＹ−Ｙ矢視断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1A and 1B show a structure of a tip portion of a lead terminal of a light emitting diode lamp according to an embodiment. FIG. 1A is a plan view, FIG. 1B is a sectional view taken along line XX in FIG. FIG. 13C is a sectional view taken along the line YY of FIG.
【００１０】一方のリード端子１ａの先端部に、平面視
が楕円形の碗状凹部１２が形成されており、この碗状凹
部１２内に発光ダイオード素子３が固着されている。こ
の発光ダイオード素子３は、金属細線４を介して他方の
リード端子１ｂに接続されている。碗状凹部１２は、直
交する各縦断面Ｘ−Ｘ，Ｙ−Ｙで、それぞれ内部壁面の
立ち上がり角度が異なるように形成されている。すなわ
ち、同図（ｂ）に示すように、Ｘ−Ｘ断面では緩慢な立
ち上がり壁面１２ａをもち、同図（ｃ）に示すように、
Ｙ−Ｙ断面では急峻な立ち上がり壁面１２ｂをもち、全
周囲にわたって壁面の立ち上がり角度は滑らかに変化し
ている。A bowl-shaped recess 12 having an elliptical shape in plan view is formed at the tip of one of the lead terminals 1a, and the light-emitting diode element 3 is fixed in the bowl-shaped recess 12. The light emitting diode element 3 is connected to the other lead terminal 1b via a thin metal wire 4. The bowl-shaped concave portion 12 is formed so that the rising angles of the inner wall surface are different in each of the vertical cross-sections X-X and Y-Y orthogonal to each other. That is, as shown in FIG. 7B, the XX cross section has a slow rising wall surface 12a, and as shown in FIG.
The YY section has a steep rising wall surface 12b, and the rising angle of the wall surface changes smoothly over the entire circumference.
【００１１】図２は、上述したリード端子構造をもった
発光ダイオードランプの指向特性を示している。図２
（ａ）に示すように、透光性樹脂からなるドーム状のレ
ンズ部５自身の指向性は、図４に示した従来の発光ダイ
オードランプのレンズ部と同様に、全周囲について均一
である。FIG. 2 shows the directional characteristics of the light emitting diode lamp having the above-mentioned lead terminal structure. Figure 2
As shown in (a), the directivity of the dome-shaped lens portion 5 itself made of a light-transmissive resin is uniform over the entire circumference like the lens portion of the conventional light emitting diode lamp shown in FIG.
【００１２】図１（ｂ）に示したように、立ち上がり角
度の緩慢な内部壁面１２ａで反射された光は、レンズ部
５である程度は集束されるものの、比較的広範囲に拡が
って出射される。図２（ｂ）にＸ−Ｘ断面の指向性を示
す。一方、図１（ｃ）に示したように、立ち上がり角度
の急峻な内部壁面１２ｂで反射された光は、狭い範囲内
でレンズ部５から出射される。その指向特性を図２
（ｃ）に示す。このように本実施例に係る発光ダイオー
ドランプは、直交する２方向で広狭二つの指向性をもつ
ので、図５に示したドットマトリクス表示装置のよう
に、上下と左右で異なる指向性が要求される用途に好適
である。As shown in FIG. 1 (b), the light reflected by the inner wall surface 12a having a slow rising angle is converged to some extent by the lens portion 5, but is emitted in a relatively wide range. FIG. 2B shows the directivity of the XX cross section. On the other hand, as shown in FIG. 1C, the light reflected by the inner wall surface 12b having a steep rising angle is emitted from the lens unit 5 within a narrow range. Figure 2 shows its directional characteristics
It shows in (c). As described above, since the light emitting diode lamp according to the present embodiment has two wide and narrow directivities in two orthogonal directions, different directivities are required in the vertical and horizontal directions as in the dot matrix display device shown in FIG. Suitable for various applications.
【００１３】図３は、本発明の別実施例のリード端子構
造を示している。図３（ａ）に示すように、本実施例の
碗状凹部２２は、平面視が円形で、底部が楕円形を呈し
ている。このような碗状凹部２２によっても、図３
（ｂ），（ｃ）にそれぞれ示すように、直交する各縦断
面において、緩慢な立ち上がり内部壁面２２ａと、急峻
な立ち上がり内部壁面２２ｂを得られるので、上述した
実施例と同様の効果を得ることができる。FIG. 3 shows a lead terminal structure according to another embodiment of the present invention. As shown in FIG. 3A, the bowl-shaped recess 22 of this embodiment has a circular shape in plan view and an oval bottom shape. Even with such a bowl-shaped recess 22, FIG.
As shown in (b) and (c) respectively, a slow rising inner wall surface 22a and a steep rising inner wall surface 22b can be obtained in each of the orthogonal vertical cross sections, so that the same effect as the above-described embodiment can be obtained. You can
【００１４】[0014]
【発明の効果】以上の説明から明らかなように、本発明
によれば、発光ダイオード素子が固着される碗状凹部の
内部壁面が、直交する各縦断面において、一方が緩慢な
立ち上がり角度をもち、他方が急峻な立ち上がり角度を
もつので、ドットマトリクス表示装置などに適した、直
交する２方向について広狭二つの指向特性をもった発光
ダイオードランプを容易に得ることができる。As is apparent from the above description, according to the present invention, one of the inner wall surfaces of the bowl-shaped recess to which the light emitting diode element is fixed has a slow rising angle in each of the vertical cross sections orthogonal to each other. Since the other has a steep rising angle, it is possible to easily obtain a light emitting diode lamp suitable for a dot matrix display device and having two wide and narrow directional characteristics in two orthogonal directions.
【図１】実施例に係る発光ダイオードランプのリード端
子構造を示す図である。FIG. 1 is a diagram showing a lead terminal structure of a light emitting diode lamp according to an embodiment.
【図２】実施例に係る発光ダイオードランプの指向性を
示す図である。FIG. 2 is a diagram showing the directivity of a light emitting diode lamp according to an embodiment.
【図３】別実施例に係る発光ダイオードランプのリード
端子構造を示す図である。FIG. 3 is a diagram showing a lead terminal structure of a light emitting diode lamp according to another embodiment.
【図４】従来の発光ダイオードランプの指向性を示す図
である。FIG. 4 is a diagram showing the directivity of a conventional light emitting diode lamp.
【図５】ドットマトリクス表示装置の説明図である。FIG. 5 is an explanatory diagram of a dot matrix display device.
１ａ…リード端子 ２ｂ…リード端子 ３…発光ダイオード素子 ４…金属細線 ５…レンズ部 ６…ドットマトリクス表示装置 １２…碗状凹部 ２２…碗状凹部 1a ... Lead terminal 2b ... Lead terminal 3 ... Light emitting diode element 4 ... Metal thin wire 5 ... Lens part 6 ... Dot matrix display device 12 ... Bowl-shaped recess 22 ... Bowl-shaped recess
Claims (1)
状凹部内に発光ダイオード素子を固着し、前記発光ダイ
オード素子と他方のリード端子とを金属細線で接続し、
前記発光ダイオード素子および金属細線を透光性樹脂で
封止した発光ダイオードランプにおいて、前記碗状凹部
は、直交する各縦断面において、一方の内部壁面が緩慢
な立ち上がり角度をもち、他方の内部壁面が急峻な立ち
上がり角度をもつことを特徴とする発光ダイオードラン
プ。1. A light emitting diode element is fixed in a bowl-shaped recess formed at the tip of one of the lead terminals, and the light emitting diode element and the other lead terminal are connected by a thin metal wire.
In the light-emitting diode lamp in which the light-emitting diode element and the thin metal wire are sealed with a light-transmissive resin, the bowl-shaped recesses have a slow rising angle on one inner wall surface and the other inner wall surface in each vertical cross section orthogonal to each other. Is a light emitting diode lamp characterized by having a steep rise angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04350884A JP3110182B2 (en) | 1992-12-03 | 1992-12-03 | Light emitting diode lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04350884A JP3110182B2 (en) | 1992-12-03 | 1992-12-03 | Light emitting diode lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06177428A true JPH06177428A (en) | 1994-06-24 |
| JP3110182B2 JP3110182B2 (en) | 2000-11-20 |
Family
ID=18413552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04350884A Expired - Fee Related JP3110182B2 (en) | 1992-12-03 | 1992-12-03 | Light emitting diode lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3110182B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1168461A2 (en) * | 2000-06-28 | 2002-01-02 | Agilent Technologies, Inc. (a Delaware corporation) | Light source |
| WO2008089165A2 (en) * | 2007-01-19 | 2008-07-24 | Cree, Inc. | High performance led package |
| WO2012139252A1 (en) * | 2011-04-13 | 2012-10-18 | Cree Huizhou Solid State Lighting Company Limited | Led devices with narrow viewing angle and an led display including same |
| CN102800787A (en) * | 2012-07-23 | 2012-11-28 | 惠州雷曼光电科技有限公司 | Surface mount type light-emitting diode (LED) bracket, surface mount type LED and display screen module |
| CN103081132A (en) * | 2011-04-07 | 2013-05-01 | 惠州科锐半导体照明有限公司 | LED device having tilted peak emission and LED display including such devices |
| US8669565B2 (en) | 2006-04-24 | 2014-03-11 | Cree Huizhou Solid State Lighting Company Limited | LED devices with narrow viewing angle and an LED display including same |
| TWI578580B (en) * | 2010-08-25 | 2017-04-11 | 惠州科銳半導體照明有限公司 | Led devices with narrow viewing angle and an led display including same |
-
1992
- 1992-12-03 JP JP04350884A patent/JP3110182B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1168461A2 (en) * | 2000-06-28 | 2002-01-02 | Agilent Technologies, Inc. (a Delaware corporation) | Light source |
| EP1168461B1 (en) * | 2000-06-28 | 2007-09-19 | Avago Technologies General IP (Singapore) Pte. Ltd | Light source |
| US8669565B2 (en) | 2006-04-24 | 2014-03-11 | Cree Huizhou Solid State Lighting Company Limited | LED devices with narrow viewing angle and an LED display including same |
| WO2008089165A2 (en) * | 2007-01-19 | 2008-07-24 | Cree, Inc. | High performance led package |
| WO2008089165A3 (en) * | 2007-01-19 | 2008-12-18 | Cree Inc | High performance led package |
| US7968900B2 (en) | 2007-01-19 | 2011-06-28 | Cree, Inc. | High performance LED package |
| TWI578580B (en) * | 2010-08-25 | 2017-04-11 | 惠州科銳半導體照明有限公司 | Led devices with narrow viewing angle and an led display including same |
| CN103081132A (en) * | 2011-04-07 | 2013-05-01 | 惠州科锐半导体照明有限公司 | LED device having tilted peak emission and LED display including such devices |
| WO2012139252A1 (en) * | 2011-04-13 | 2012-10-18 | Cree Huizhou Solid State Lighting Company Limited | Led devices with narrow viewing angle and an led display including same |
| CN103003960A (en) * | 2011-04-13 | 2013-03-27 | 惠州科锐半导体照明有限公司 | LED devices with narrow viewing angle and an LED display including same |
| CN102800787A (en) * | 2012-07-23 | 2012-11-28 | 惠州雷曼光电科技有限公司 | Surface mount type light-emitting diode (LED) bracket, surface mount type LED and display screen module |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3110182B2 (en) | 2000-11-20 |
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