JPH0479380A - Multi-channel photo coupler - Google Patents
Multi-channel photo couplerInfo
- Publication number
- JPH0479380A JPH0479380A JP2194545A JP19454590A JPH0479380A JP H0479380 A JPH0479380 A JP H0479380A JP 2194545 A JP2194545 A JP 2194545A JP 19454590 A JP19454590 A JP 19454590A JP H0479380 A JPH0479380 A JP H0479380A
- Authority
- JP
- Japan
- Prior art keywords
- light
- mounting
- light emitting
- channel
- resin
- 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
Links
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
Landscapes
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は多チャンネルのホトカプラに関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a multi-channel photocoupler.
従来の多チャンネルホトカプラは、第３図ＡＢに示す構
造になっている。すなわち、第３図Ｃ，Ｄの如く、個々
のリードフレーム２０のマウントアイランド３上に発光
素子１及び受光素子４をそれぞれマウントし、ワイヤー
ボンディングを行った後に、第３図りの如く、透光性樹
脂６により発光素子及び受光素子を光結合し、これを複
数個並べ、同時に遮光性の樹脂５によりモールドした構
造である。A conventional multi-channel photocoupler has a structure shown in FIG. 3AB. That is, as shown in FIGS. 3C and 3D, the light emitting element 1 and the light receiving element 4 are each mounted on the mounting island 3 of each lead frame 20, and after wire bonding, as shown in the third diagram, It has a structure in which a light emitting element and a light receiving element are optically coupled by a resin 6, a plurality of them are arranged, and simultaneously molded with a light shielding resin 5.
上述した従来の技術では、各チャンネルが各々独立して
いるために、以下のような欠点がある。The above-described conventional technology has the following drawbacks because each channel is independent.
（１）ｎチャンネルホトカプラでは１チャンネルホトカ
プラのｎ倍の大きさとなってし抜う。(1) An n-channel photocoupler is n times larger than a 1-channel photocoupler.
（２）外部回路に於いて、ホトカプラのいずれかの端子
を各チャンネル共通とするため、配線する手間が生ずる
。(2) In the external circuit, one terminal of the photocoupler is common to each channel, which requires wiring.
本発明は、外形を小型化し、さらに外部端子数を低減す
ることを目的としている。The present invention aims to reduce the external size and further reduce the number of external terminals.
本発明は複数の発光素子を備えた発光部と複数の受光素
子を備えた受光部とを互いに対向配置し、樹脂封止によ
り一体化した多チャンネルホトカプラにおいて、前記発
光部、受光部とも各素子が１つの共通のマウントアイラ
ンドにマウントされていることを特徴とする多チャンネ
ルホトカプラで′ある。この多チャンネルホトカプラの
マウントアイランド端部を樹脂外に出すと放熱効果を上
げることができる。The present invention provides a multi-channel photocoupler in which a light emitting part including a plurality of light emitting elements and a light receiving part having a plurality of light receiving elements are disposed facing each other and integrated by resin sealing, in which each element in both the light emitting part and the light receiving part is integrated. It is a multi-channel photocoupler characterized in that both are mounted on one common mounting island. If the end of the mounting island of this multi-channel photocoupler is exposed outside the resin, the heat dissipation effect can be improved.
本発明は複数の発光素子及び複数の受光素子のマウント
アイランドを各々単一のアイランドとすることにより発
光側のアノード、受光側のコレクターを共通端子として
いる。これにより従来ならばｎチャンネル当たり（発光
側２本、受光側２本）Ｘｎ本のリードが必要であったの
に対し、本発明の構造では、２＋２ｎ本のリードで間に
合うこととなる。従来ではコレクター及びカソードリー
ドとして使用していたリードを本発明ではエミッタ、ア
ノードとして使うことができるために、外形が同じ大き
さでもほぼ倍のチャンネル数を収容できる。このため、
外形を大幅に小型化することができる。また、マウント
アイランドが共通となっているため、外部回路でこれを
結ぶ必要がない
〔実施例〕
次に本発明について図面を参照して説明する。In the present invention, the mounting islands of the plurality of light emitting elements and the plurality of light receiving elements are each made into a single island, so that the anode on the light emitting side and the collector on the light receiving side are used as a common terminal. As a result, whereas conventionally, Xn leads were required per n channel (2 on the light emitting side and 2 on the light receiving side), in the structure of the present invention, 2+2n leads are sufficient. Since the leads conventionally used as collector and cathode leads can be used as emitters and anodes in the present invention, almost twice the number of channels can be accommodated even if the external size is the same. For this reason,
The external size can be significantly reduced. Furthermore, since the mounting islands are common, there is no need to connect them with external circuits [Embodiment] Next, the present invention will be described with reference to the drawings.
第１図に本発明の実施例を示す。FIG. 1 shows an embodiment of the present invention.
受光素子４にはホトトランジスタを用いている。発光部
、受光部の各マウントアイランド３を各チャンネル共通
として発光素子１と受光素子４をマウント、ワイヤーボ
ンディングしく第１図Ｃ，Ｄ）、第１図Ａ、Ｂに示す様
に、各チャンネルの発光素子１及び受光素子４を透光性
の樹脂６により光結合させた後、遮光性樹脂５によりモ
ールドした構造となっている。A phototransistor is used as the light receiving element 4. The light emitting element 1 and the light receiving element 4 are mounted using the mounting island 3 of the light emitting part and the light receiving part in common for each channel, and wire bonding is performed for each channel as shown in Fig. 1 C, D) and Fig. 1 A, B. The light-emitting element 1 and the light-receiving element 4 are optically coupled using a light-transmitting resin 6, and then molded with a light-shielding resin 5.
第２図は本発明の実施例２の説明図である。マウントア
イランド３は第２図Ｃの如く端部３ａが長くなっており
、第２図Ａ（平面図）、Ｂ（正面図）の如く遮光性樹脂
５の外部に出ている。この他は先の実施例と同じである
。FIG. 2 is an explanatory diagram of Embodiment 2 of the present invention. The mount island 3 has an elongated end 3a as shown in FIG. 2C, and extends outside the light-shielding resin 5 as shown in FIGS. 2A (plan view) and B (front view). The rest is the same as the previous embodiment.
この実施例は、各チャンネル共通のマウントアイランド
の端部から樹脂外部へ出ているのですべてのチャンネル
の放熱効果が向上する。従来のような各チャンネル独立
の構造では、各マウントアイランドより各々放熱板を外
へ出す必要があり、コスト高、大型になる。In this embodiment, the heat dissipation effect of all channels is improved because the heat dissipates from the end of the mounting island common to each channel to the outside of the resin. In the conventional structure where each channel is independent, it is necessary to extend the heat sink from each mounting island, resulting in high cost and large size.
以上説明してきたように、本発明は以下の効果がある。 As explained above, the present invention has the following effects.
（１）外部端子数を低減でき、小型化できる。１チヤン
ネルの端子数をＳとし、ｎチャンネルでは（２＋ （ｓ
−２）ｎ）／ｓｎ倍にできる。(1) The number of external terminals can be reduced and the size can be reduced. Let S be the number of terminals in one channel, and (2+ (s
-2) Can be multiplied by n)/sn.
り２）放熱効果が向上する。2) Improved heat dissipation effect.
受光素子、５・・・遮光性樹脂、６・・・透光性樹脂。Light-receiving element, 5... Light-shielding resin, 6... Light-transmitting resin.
Claims (1)
備えた受光部とを互いに対向配置し、樹脂封止により一
体化した多チャンネルホトカプラにおいて、前記発光部
、受光部とも各素子が１つの共通のマウントアイランド
にマウントされていることを特徴とする多チャンネルホ
トカプラ。 ２、請求項１記載の多チャンネルホトカプラにおいて、
マウントアイランド端部が樹脂の外に飛び出しているこ
とを特徴とする多チャンネルホトカプラ。[Scope of Claims] 1. In a multi-channel photocoupler in which a light emitting part having a plurality of light emitting elements and a light receiving part having a plurality of light receiving elements are arranged facing each other and integrated by resin sealing, the light emitting part, A multi-channel photocoupler characterized in that each element including the light receiving section is mounted on one common mounting island. 2. The multi-channel photocoupler according to claim 1,
A multi-channel photocoupler characterized by the end of the mount island protruding outside the resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2194545A JPH0479380A (en) | 1990-07-23 | 1990-07-23 | Multi-channel photo coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2194545A JPH0479380A (en) | 1990-07-23 | 1990-07-23 | Multi-channel photo coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0479380A true JPH0479380A (en) | 1992-03-12 |
Family
ID=16326316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2194545A Pending JPH0479380A (en) | 1990-07-23 | 1990-07-23 | Multi-channel photo coupler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0479380A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6507048B1 (en) * | 1999-08-23 | 2003-01-14 | Sharp Kabushiki Kaisha | Light coupled device with insulating and light shielding element and light insulating and transmitting element |
| US6710376B2 (en) * | 2001-09-04 | 2004-03-23 | Eugene Robert Worley | Opto-coupler based on integrated forward biased silicon diode LED |
-
1990
- 1990-07-23 JP JP2194545A patent/JPH0479380A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6507048B1 (en) * | 1999-08-23 | 2003-01-14 | Sharp Kabushiki Kaisha | Light coupled device with insulating and light shielding element and light insulating and transmitting element |
| US6710376B2 (en) * | 2001-09-04 | 2004-03-23 | Eugene Robert Worley | Opto-coupler based on integrated forward biased silicon diode LED |
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