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JPH01143388A - Printed wiring board with metal plate as base - Google Patents

Printed wiring board with metal plate as base

Info

Publication number
JPH01143388A
JPH01143388A JP30208187A JP30208187A JPH01143388A JP H01143388 A JPH01143388 A JP H01143388A JP 30208187 A JP30208187 A JP 30208187A JP 30208187 A JP30208187 A JP 30208187A JP H01143388 A JPH01143388 A JP H01143388A
Authority
JP
Japan
Prior art keywords
metal plate
printed wiring
wiring board
low heat
heat
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
Application number
JP30208187A
Other languages
Japanese (ja)
Other versions
JPH0691303B2 (en
Inventor
Tsukasa Yamamoto
山元 司
Keizo Sugimoto
圭三 杉本
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.)
Ibiden Co Ltd
Original Assignee
Ibiden Co Ltd
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 Ibiden Co Ltd filed Critical Ibiden Co Ltd
Priority to JP62302081A priority Critical patent/JPH0691303B2/en
Publication of JPH01143388A publication Critical patent/JPH01143388A/en
Publication of JPH0691303B2 publication Critical patent/JPH0691303B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/03Use of materials for the substrate
    • H05K1/05Insulated conductive substrates, e.g. insulated metal substrate
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0201Thermal arrangements, e.g. for cooling, heating or preventing overheating
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/18Printed circuits structurally associated with non-printed electric components
    • H05K1/181Printed circuits structurally associated with non-printed electric components associated with surface mounted components

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Insulated Metal Substrates For Printed Circuits (AREA)
  • Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
  • Structure Of Printed Boards (AREA)

Abstract

PURPOSE:To protect the electronic component having low heat resistance and to mount in high density by forming an insulating layer in a space of the metal plate, and increasing a distance between the component having low heat resistance to be placed and the metal plate. CONSTITUTION:A conductor circuit 13 is formed through an insulating layer 13 on a metal plate 11 to become paste thereby to obtain a printed wiring board. A space 14 made of a hole 14a is formed at a section to be placed with an electronic component 21 having low heat resistance in the plate 11. An insulating layer 12 is formed in the space 14, and a distance between the component 21 to be placed and the plate 11 is increased. Then, the heat from the component 20 generating a large heat is not easily transferred to the component 21 having low heat resistance. Thus, the component 21 having low heat resistance is protected, and high density mounting is performed.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明はプリント配線板に関し、特に金属板をベースと
したプリント配線板に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a printed wiring board, and particularly to a printed wiring board based on a metal plate.

(従来の技術) 近年の電子機器の小型化及び薄型化の要求に伴ない、プ
リント配線板に対する部品実装の高密度化への要求はさ
らに一層高まってきている。特に、最近のように、所謂
チップ部品が普及して広い意味でのへイブリッドIC基
板としてのプリント配線板が使用される例が多くなって
くると、この種のプリント配線板に対して従来からの耐
熱性や寸法安定性等の基本的特性のほかに、高密度実装
の際に問題となる放熱性が従来以上に厳しいものが要求
されてきている。すなわち、プリント配線板にパワート
ランジスターや抵抗値の大きな所謂チップ抵抗等の大き
く発熱する部品を搭載する場合には、このプリント配線
板は、耐熱性や寸法安定性等の基本的特性のほかに、充
分な放熱特性をも有するものとする必要があるのである
(Prior Art) With the recent demand for smaller and thinner electronic devices, the demand for higher density component mounting on printed wiring boards has further increased. In particular, recently, as so-called chip components have become widespread and printed wiring boards are increasingly being used as hybrid IC boards in a broader sense, the conventional In addition to basic properties such as heat resistance and dimensional stability, heat dissipation, which is a problem in high-density packaging, is now required to be more stringent than ever. In other words, when a printed wiring board is equipped with parts that generate a large amount of heat, such as a power transistor or a so-called chip resistor with a large resistance value, the printed wiring board must have basic characteristics such as heat resistance and dimensional stability. It is also necessary to have sufficient heat dissipation characteristics.

このような充分な放熱特性を有するプリント配線板とし
ては、所謂アルミベース銅張板か従来よリ一般に使用さ
れている。また、例えば第4図に示すような、銅板をベ
ースとするようなものも開発されてきている。このよう
な金属板をベースにしたプリント配線板は、優れた放熱
性、寸法安定性を有し、しかも不燃性で「われ」や「欠
け」が生じない等の特性を有していることから、上記の
パワートランジスターや抵抗値の大きな所謂チップ抵抗
等の大きく発熱する部品を搭載するためのプリント配線
板や所謂ハイブリッドIC基板、自動車用電装部品とし
て多く採用されてきているのである。
As a printed wiring board having such sufficient heat dissipation characteristics, a so-called aluminum-based copper clad board has been commonly used. Additionally, devices based on copper plates, as shown in FIG. 4, have also been developed. Printed wiring boards based on such metal plates have excellent heat dissipation and dimensional stability, as well as being nonflammable and free from cracks and chips. They have been widely used as printed wiring boards for mounting components that generate a large amount of heat, such as the above-mentioned power transistors and so-called chip resistors with large resistance values, so-called hybrid IC boards, and electrical components for automobiles.

(発明が解決しようとする問題点) ところが、近年高まってきている要求である高密度実装
化をさらに推し進めようとすると、上記のような単なる
金属板をベースとしたプリント配線板では不充分となっ
てきている。すなわち、パワートランジスター等の大き
く発熱する部品と、耐熱性の低い電子部品とを同時に実
装しようとすると、金属板をベースとしたプリント配線
板の長所が逆に短所となってしまうのである。つまり、
この種のプリント配線板がその放熱特性に優れるという
ことは、上記のような耐熱性の低い電子部品に対して熱
が容易に伝えられるということになるから、パワートラ
ンジスター等の大きく発熱する部品と、耐熱性の低い電
子部品とを別々の基板に実装するか、第4図に示したよ
うな実装の仕方をしなければならなくなるのである。第
4図に示した従来のプリント配線板では、所謂パワーI
Cを絶縁層及びアルミナ基板を介して銅板上に実装し、
一方耐熱性の低い電子部品については、これをパワーI
Cから離すとともに、絶縁層及びアルミ板を介して銅板
上に実装して、耐熱性の低い電子部品にパワーICから
の熱か伝導しにくくなるように構成したものである。し
かしながら、この構成のものでは、耐熱性の低い電子部
品をパワーICから離すための空間が必要となるととも
に、全体の厚さも厚いものとならざるを得す、高密度実
装には不向きである。
(Problem to be solved by the invention) However, in order to further promote high-density packaging, which has been an increasing demand in recent years, printed wiring boards based on mere metal plates as described above are insufficient. It's coming. In other words, when attempting to simultaneously mount components that generate a large amount of heat, such as power transistors, and electronic components with low heat resistance, the advantages of printed wiring boards based on metal plates become disadvantages. In other words,
The fact that this type of printed wiring board has excellent heat dissipation properties means that heat can be easily transferred to electronic components with low heat resistance such as those mentioned above, so it can be used with components that generate a large amount of heat such as power transistors. , electronic components with low heat resistance must be mounted on separate boards, or the mounting method shown in FIG. 4 must be used. In the conventional printed wiring board shown in Fig. 4, the so-called power I
C is mounted on a copper plate via an insulating layer and an alumina substrate,
On the other hand, for electronic components with low heat resistance, this is
The power IC is separated from the power IC and mounted on a copper plate through an insulating layer and an aluminum plate, so that heat from the power IC is difficult to conduct to electronic components with low heat resistance. However, this configuration requires a space to separate electronic components with low heat resistance from the power IC, and the overall thickness must be thick, making it unsuitable for high-density packaging.

本発明は以Eのような実状に鑑みてなされたもので、そ
の解決しようとする問題点は、耐熱性の低い電子部品と
パワートランジスター等の大きく発熱する部品とを同時
に実装する場合の、従来のプリント配線板における耐熱
性の低い電子部品への熱伝導を避けるための構成上の複
雑さである。
The present invention has been made in view of the actual situation described below. This is a structural complexity to avoid heat conduction to electronic components with low heat resistance in printed wiring boards.

そして、本発明の目的とするところは、大きく発熱する
部品からの熱を耐熱性の低い電子部品側に容易に伝わら
ないようにすることができて、耐熱性の低い電子部品と
パワートランジスター等の大きく発熱する部品とを同時
に実装することができるプリント配線板を簡単な構成に
よって提供することにある。
An object of the present invention is to prevent heat from components that generate a large amount of heat from being easily transmitted to electronic components with low heat resistance, and to prevent electronic components with low heat resistance and power transistors, etc. To provide a printed wiring board with a simple configuration on which components that generate a large amount of heat can be mounted at the same time.

(問題点を解決するための手段) 以上の問題点を解決するために本発明が採った手段は、
実施例に対応する第1図〜第3図を参照して説明すると
、 [ベースとなる金属板(11)に絶縁層(12)を介し
て導体回路(13)を形成したプリント配線板において
、 金属板(li)の内、耐熱性の低い電子部品(21)が
搭載される部分に、穴(14a)または凹所(14b)
等からなる空間部分(14)を形成し、この空間部分(
14)内に絶縁層(12)を形成して、搭載されるべき
耐熱性の低い電子部品(21)と金属板(11)との距
離を大きくするように構成したことを特徴とする金属板
をベースとしたプリント配線板(10)J である。
(Means for solving the problems) The means taken by the present invention to solve the above problems are as follows:
To explain with reference to FIGS. 1 to 3 corresponding to Examples, [In a printed wiring board in which a conductive circuit (13) is formed on a metal plate (11) serving as a base via an insulating layer (12), A hole (14a) or a recess (14b) is formed in the part of the metal plate (li) where the electronic component (21) with low heat resistance is mounted.
, etc., and form a spatial portion (14) consisting of
14) A metal plate characterized in that an insulating layer (12) is formed therein to increase the distance between the metal plate (11) and an electronic component (21) with low heat resistance to be mounted. This is a printed wiring board (10) J based on.

すなわち、本発明に係るプリント配線板(10)は、そ
のベースとなる金属板(11)の内、耐熱性の低い電子
部品(以下単に低耐熱部品という) (21)が搭載さ
れる部分に、穴(14a)または凹所(14b)等から
なる空間部分(14)を形成し、この空間部分(14)
内に絶縁層(12)を形成して、搭載されるべき低耐熱
部品(21)と金属板(11)との距離を大きくするよ
うに構成したものである。
That is, the printed wiring board (10) according to the present invention has a base metal plate (11) in which electronic components with low heat resistance (hereinafter simply referred to as low heat resistance components) (21) are mounted. A space portion (14) consisting of a hole (14a) or a recess (14b), etc. is formed, and this space portion (14)
An insulating layer (12) is formed inside to increase the distance between the low heat resistant component (21) to be mounted and the metal plate (11).

この構成を図面に示した具体例に従って詳細に説明する
と、次の通りである。
This configuration will be explained in detail according to a specific example shown in the drawings as follows.

本発明に係るプリント配線板(10)にあっては、その
ベースとなる金属板(11)としては、パワートランジ
スター等の大きく発熱する部品(以下単に発熱部品とい
う)(20)からの熱の伝導か良好でしかも放熱するの
に適したものであればどのような材料によって形成した
ものであってもよい。このような金属板(II)として
は、一般に使用されていて安価に入手てきる等の理由か
ら、銅板あるいはアルミ板によって形成したものが最も
適している。
In the printed wiring board (10) according to the present invention, the base metal plate (11) is used to conduct heat from components (20) that generate a large amount of heat such as power transistors (hereinafter simply referred to as heat generating components). It may be formed of any material as long as it has good heat dissipation and is suitable for dissipating heat. As such a metal plate (II), one formed of a copper plate or an aluminum plate is most suitable because it is commonly used and can be obtained at low cost.

また、本発明に係るプリント配線板(lO)にあっては
、そのベースとなる金属板(11)の内、低耐熱部品(
21)か搭載される部分に空間部分(14)を形成する
必要があるが、この空間部分(14)は、低耐熱部品(
21)を金属板(11)から大きく引き離すためのもの
であるから種々の形態のものが適用できる。
In addition, in the printed wiring board (IO) according to the present invention, among the metal plates (11) that are the base thereof, low heat resistant parts (
It is necessary to form a space (14) in the part where the low heat resistant parts (21) are mounted.
21) from the metal plate (11), various forms can be applied.

すなわち、この空間部分(14)としては、第1図に示
すような金属板(11)を貫通する穴(14a)であっ
てもよいし、また第2図及び第3図に示すような金属板
(11)の一部をけずりとった(所謂サグリ加工による
加工を行なった)凹所(14b)であってもよいのであ
る。
That is, this space portion (14) may be a hole (14a) penetrating the metal plate (11) as shown in FIG. 1, or a metal plate as shown in FIGS. 2 and 3. The recess (14b) may be formed by cutting out a part of the plate (11) (processed by so-called recessing).

このような空間部分(14)内に対しては、絶縁層(1
2)を形成する必要がある。その理由は、この空間部分
(14)に対向した部分に低耐熱部品(21)を搭載す
るのであるが、この低耐熱部品(21)を保護するため
に、この搭載されるべき低耐熱部品(21)と金属板(
11)間に熱的遮蔽効果のある物を存在させる必要があ
るからである。そのためには、空間部分(14)の近傍
部分において使用されている熱的遮蔽効果のある絶縁層
(12)を空間部分(14)内に存在させることが最も
簡単なのである。勿論、金属板(11)と表面に形成さ
れるべき各導体回路(13)とを絶縁層(12)によっ
て隔離する必要かあることは、従来の一般のプリント配
線板と同様である。
An insulating layer (14) is placed inside such a space (14).
2). The reason for this is that the low heat resistant component (21) is mounted in the part facing this space (14), and in order to protect this low heat resistant component (21), the low heat resistant component (21) to be mounted ( 21) and metal plate (
11) This is because it is necessary to have something with a thermal shielding effect between them. For this purpose, it is easiest to make the insulating layer (12) with a thermal shielding effect, which is used in the vicinity of the space part (14), exist within the space part (14). Of course, it is necessary to isolate the metal plate (11) and each conductor circuit (13) to be formed on the surface by an insulating layer (12), as in the case of a conventional general printed wiring board.

また、各低耐熱部品(21)を凹所(14b)内の絶縁
層(12)によって熱的に隔離すれば、第3図に示した
ように、金属板(11)に形成したキャビティ(22)
内に発熱部品(20)を直接実装することは充分可能で
ある。さらに、発熱部品(20)からの放熱をより速や
かに行うために、第4図に示したように、金属板(11
)に直接スルホールメツキ(31)を施すことにより熱
伝導用スルホールとして使用可能となる。
Furthermore, if each low heat resistant component (21) is thermally isolated by the insulating layer (12) in the recess (14b), the cavity (22) formed in the metal plate (11) can be isolated as shown in FIG. )
It is fully possible to directly mount the heat generating component (20) inside. Furthermore, in order to more quickly dissipate heat from the heat generating component (20), a metal plate (11
) can be used as a through hole for heat conduction by directly applying through hole plating (31).

(発明の作用) 本発明か以とのような手段を採ることによって以下のよ
うな作用かある。この作用については、本発明に係るプ
リント配線板(10)に低耐熱部品r21)左仄請I、
た廿能て止■するへすなわち、本発明に係るプリント配
線板(io)を採用すれば、第1図〜第4図に示したよ
うに、これに搭載した低耐熱部品(21)は、空間部分
(14)内に形成した絶縁層(12)によって金属板(
11)に対して熱的に隔離された状態となっているので
ある。
(Actions of the Invention) By adopting the above-mentioned measures of the present invention, the following effects can be obtained. Regarding this effect, the printed wiring board (10) according to the present invention has a low heat resistant component r21) left request I,
In other words, if the printed wiring board (IO) according to the present invention is adopted, as shown in FIGS. 1 to 4, the low heat resistant components (21) mounted on it will be The metal plate (
11) is in a state of thermal isolation.

従って、各発熱部品(20)から熱が生じた場合に、こ
の発熱部品(20)からの熱は金属板(11)を介して
他の部分に分散することはあっても、空間部分(14)
内の絶縁層(12)によって遮蔽されて直接各低耐熱部
品(2■)に伝導することはないのである。これにより
、このプリント配線板(10)にあっては、金属板(1
1)による放熱特性はそのまま維持しながら、低耐熱部
品(21)を発熱部品(20)の熱から保護するのであ
る。
Therefore, when heat is generated from each heat generating component (20), although the heat from the heat generating component (20) may be dispersed to other parts via the metal plate (11), )
It is shielded by the insulating layer (12) inside and is not directly conducted to each low heat resistant component (2). As a result, in this printed wiring board (10), the metal plate (1
This protects the low heat-resistant component (21) from the heat of the heat-generating component (20) while maintaining the heat dissipation characteristics according to 1).

勿論、絶縁層(12)は熱を完全に遮蔽するものてはな
いから、各発熱部品(20)が発した熱が絶縁層(12
)を通して各低耐熱部品(21)に部分的に伝導される
ことはあるかもしれないか、その熱は各低耐熱部品(2
1)を過熱する前に金属板(11)の他の部分を通して
外部に放散されるから、低耐熱部品(21)が発熱部品
(20)からの熱によって損傷されたり破壊されたりは
lノないのである。
Of course, the insulating layer (12) does not completely shield heat, so the heat generated by each heat generating component (20) is transferred to the insulating layer (12).
) to each low heat resistant component (21);
1) is dissipated to the outside through other parts of the metal plate (11) before overheating, so the low heat resistant component (21) will not be damaged or destroyed by the heat from the heat generating component (20). It is.

また、以−ヒのような作用を有するプリント配線板(1
0)は、従来の装置をそのまま採用して形成することが
できるから、その製造が算常に簡単となっているのであ
る。すなわち、この本発明に係るプリント配線板(10
)は、金属板(11)の低耐熱部品(21)を搭載すべ
き部分に対応する箇所に空間部分(14)を形成して、
この空間部分(14)内に絶縁層(12)を充填すれば
よいからである。空間部分(14)の形成自体は、ドリ
ル等による穴明けで行なってもよいし、所謂ザグリ加工
によって行なってもよいものである。
In addition, a printed wiring board (1
0) can be formed using conventional equipment as is, making its manufacture computationally simple. That is, the printed wiring board (10
) forms a space portion (14) at a location corresponding to the portion of the metal plate (11) where the low heat resistant component (21) is to be mounted,
This is because it is sufficient to fill this space (14) with the insulating layer (12). The space portion (14) itself may be formed by drilling with a drill or the like, or by so-called counterboring.

(実施例) 第1図ないし第4図を参照して本発明に係る製造方法の
1例を示す。
(Example) An example of the manufacturing method according to the present invention will be shown with reference to FIGS. 1 to 4.

先ずアルミ板(純アルミ99.7%) (11)にエツ
チングによって空間部分(14a) 、あるいはザグリ
加工によって凹fi(14b)を形成し、必要な場合は
パリ取りを行う。また、前述の空間部分はドリル加工あ
るいは打抜き加工でもよい。
First, a space (14a) is formed on an aluminum plate (99.7% pure aluminum) (11) by etching, or a recess fi (14b) is formed by counterboring, and if necessary, deburring is performed. Further, the above-mentioned space portion may be formed by drilling or punching.

次に、絶縁層(22) )アルミ板との密着性向上のた
めアルミ板表面にアルマイト層を形成し、その後エポキ
シ樹脂と無機フィラーの混合物を絶縁層および銅箔接着
用接着剤として用いて、銅箔を積層プレスし、その後は
通常のサブストラクト法にて導体回路を形成することに
より、金属基板(第1〜4図)を得た。
Next, an alumite layer is formed on the surface of the aluminum plate to improve adhesion to the insulating layer (22), and then a mixture of epoxy resin and inorganic filler is used as an adhesive for bonding the insulating layer and the copper foil. A metal substrate (FIGS. 1 to 4) was obtained by laminating and pressing copper foil and then forming a conductor circuit by a normal substruct method.

次に上記の方法にて得られた基板の放熱特性を以下の方
法で測定した。測定結果は表に熱抵抗として示した。
Next, the heat dissipation properties of the substrate obtained by the above method were measured by the following method. The measurement results are shown in the table as thermal resistance.

基板サイズを50x50xl−5mmとし、基板中央に
1010X15の導体パターンを形成する。しかるのち
、パワートランジスタ(23C2232)を前記導体パ
ターンに半田付けし所定の電流・電圧を印加し、パワー
トランジスタの発熱状況を調べ下記の式にて熱抵抗を算
出した。
The substrate size is 50x50xl-5mm, and a 1010x15 conductor pattern is formed in the center of the board. Thereafter, a power transistor (23C2232) was soldered to the conductive pattern, a predetermined current and voltage were applied, and the heat generation state of the power transistor was examined to calculate the thermal resistance using the following formula.

熱抵抗=上昇温度(℃)/消費電力(W)表  熱抵抗
(”C/ W ) (発明の効果) 以上詳述した通り、本発明にあっては、上記各実施例に
て例示した如く、 「ベースとなる金属板(11)に絶縁層(12)を介し
て導体回路(13)を形成したプリント配線板において
、 金属板(11)の内、耐熱性の低い電子部品(21)が
搭載される部分に、穴(14a)または凹所(14b)
等からなる空間部分(14)を形成し、この空間部分(
14)内に絶縁層(12)を形成して、搭載されるべき
耐熱性の低い電子部品(21)と金属板(11)との距
離を大きくするように構成したこと」 にその構成上の特徴かり、これにより、大きく発熱する
部品からの熱を耐熱性の低い電子部品側に容易に伝わら
ないようにすることができて、耐熱性の低い電子部品と
パワートランジスター等の大きく発熱する部品とを同時
に実装することができる金属板をベースとしたプリント
配線板(10)を簡単な構成によって提供することがで
きるのである。
Thermal resistance = Temperature rise (°C) / Power consumption (W) Table Thermal resistance (C/W) (Effects of the invention) As detailed above, in the present invention, as exemplified in each of the above embodiments, , ``In a printed wiring board in which a conductor circuit (13) is formed on a base metal plate (11) via an insulating layer (12), electronic components (21) with low heat resistance are included in the metal plate (11). Hole (14a) or recess (14b) in the part to be mounted
, etc., and form a spatial portion (14) consisting of
14) An insulating layer (12) is formed in the metal plate (11) to increase the distance between the electronic component (21) with low heat resistance to be mounted and the metal plate (11). This feature makes it possible to prevent heat from components that generate a large amount of heat from being easily transmitted to electronic components with low heat resistance, and to prevent the heat from components that generate a large amount of heat from being easily transferred to electronic components that have low heat resistance and components that generate a large amount of heat such as power transistors. This makes it possible to provide a printed wiring board (10) based on a metal plate with a simple structure, on which both can be simultaneously mounted.

すなわち、本発明に係るプリント配線板(10)によれ
ば、これに発熱部品(20)と低耐熱部品(21)とを
近づけて実装したとしても、発熱部品(20)が発生し
た熱は空間部分(14)内の絶縁層(12)によって直
接かつ大量に低耐熱部品(2I)に伝導することかなく
、低耐熱部品(21)を保護することができることは勿
論のこと、このプリント配線板(lO)によって近年要
求されてきている高密度実装を簡単な構成によって達成
することができるのである。
That is, according to the printed wiring board (10) according to the present invention, even if the heat generating component (20) and the low heat resistant component (21) are mounted close to each other, the heat generated by the heat generating component (20) will be transferred to the space. It goes without saying that the low heat resistant component (21) can be protected by the insulating layer (12) in the portion (14) without being directly and in large quantities conducted to the low heat resistant component (2I). (lO) allows the high-density packaging that has been required in recent years to be achieved with a simple configuration.

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

第1図は本発明の第一実施例に係るプリント配線板の部
分拡大断面図、第2図は同第二実施例に係るプリント配
線板の部分拡大断面図、第3図は同第三実施例に係るプ
リント配線板の部分拡大断面図、第4図は本発明のさら
に他の実施例に係るプリント配線板の部分拡大断面図、
第5図は従来のプリント配線板の一部を示す断面図であ
る。 符   号   の   説   明 10・・・プリント配線板、11・−・金属板、12−
・・絶縁層13−・・導体回路、14−・空間部分、 
14 a =−穴、 14b−・・凹所、2ト・・発熱
部品、21・・・低耐熱部品、22・・・キャビティ、
31・・・熱伝導スルホール。 以  上
FIG. 1 is a partially enlarged cross-sectional view of a printed wiring board according to a first embodiment of the present invention, FIG. 2 is a partially enlarged cross-sectional view of a printed wiring board according to a second embodiment of the present invention, and FIG. 3 is a partially enlarged cross-sectional view of a printed wiring board according to a third embodiment of the present invention. FIG. 4 is a partially enlarged sectional view of a printed wiring board according to still another embodiment of the present invention;
FIG. 5 is a sectional view showing a part of a conventional printed wiring board. Explanation of symbols 10...Printed wiring board, 11...Metal plate, 12-
...Insulating layer 13--Conductor circuit, 14--Space part,
14a=-hole, 14b--recess, 2t-heat-generating component, 21--low heat-resistant component, 22--cavity,
31...Heat conduction through hole. that's all

Claims (1)

【特許請求の範囲】  ベースとなる金属板に絶縁層を介して導体回路を形成
したプリント配線板において、 前記金属板の内、耐熱性の低い電子部品が搭載される部
分に、穴または凹所等からなる空間部分を形成し、この
空間部分内に前記絶縁層を形成して、搭載されるべき前
記耐熱性の低い電子部品と前記金属板との距離を大きく
するように構成したことを特徴とする金属板をベースと
したプリント配線板。
[Claims] In a printed wiring board in which a conductor circuit is formed on a metal plate as a base via an insulating layer, a hole or recess is provided in a portion of the metal plate on which an electronic component with low heat resistance is mounted. and the like, and the insulating layer is formed in this space to increase the distance between the electronic component with low heat resistance to be mounted and the metal plate. A printed wiring board based on a metal plate.
JP62302081A 1987-11-30 1987-11-30 Printed wiring board equipment with electronic components Expired - Lifetime JPH0691303B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62302081A JPH0691303B2 (en) 1987-11-30 1987-11-30 Printed wiring board equipment with electronic components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62302081A JPH0691303B2 (en) 1987-11-30 1987-11-30 Printed wiring board equipment with electronic components

Publications (2)

Publication Number Publication Date
JPH01143388A true JPH01143388A (en) 1989-06-05
JPH0691303B2 JPH0691303B2 (en) 1994-11-14

Family

ID=17904693

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62302081A Expired - Lifetime JPH0691303B2 (en) 1987-11-30 1987-11-30 Printed wiring board equipment with electronic components

Country Status (1)

Country Link
JP (1) JPH0691303B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05326991A (en) * 1991-08-19 1993-12-10 Spectrolab Inc Electric feed-through structure and manufacture thereof
JP2006253428A (en) * 2005-03-11 2006-09-21 Yazaki Corp Metal core substrate and in-vehicle system using the same
JP2006339545A (en) * 2005-06-06 2006-12-14 Furukawa Electric Co Ltd:The Metal core circuit board
JP2006351634A (en) * 2005-06-13 2006-12-28 Yazaki Corp Substrate heat dissipation structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5155945U (en) * 1974-10-28 1976-04-30
JPS60262636A (en) * 1984-06-11 1985-12-26 松下電工株式会社 Metallic-base laminated board
JPS61292993A (en) * 1985-06-20 1986-12-23 三菱樹脂株式会社 Method for manufacturing metal-based laminates
JPS63292660A (en) * 1987-05-26 1988-11-29 Asia Electron Kk Multilayered printed wiring substrate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5155945U (en) * 1974-10-28 1976-04-30
JPS60262636A (en) * 1984-06-11 1985-12-26 松下電工株式会社 Metallic-base laminated board
JPS61292993A (en) * 1985-06-20 1986-12-23 三菱樹脂株式会社 Method for manufacturing metal-based laminates
JPS63292660A (en) * 1987-05-26 1988-11-29 Asia Electron Kk Multilayered printed wiring substrate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05326991A (en) * 1991-08-19 1993-12-10 Spectrolab Inc Electric feed-through structure and manufacture thereof
US5425816A (en) * 1991-08-19 1995-06-20 Spectrolab, Inc. Electrical feedthrough structure and fabrication method
JP2006253428A (en) * 2005-03-11 2006-09-21 Yazaki Corp Metal core substrate and in-vehicle system using the same
JP2006339545A (en) * 2005-06-06 2006-12-14 Furukawa Electric Co Ltd:The Metal core circuit board
JP2006351634A (en) * 2005-06-13 2006-12-28 Yazaki Corp Substrate heat dissipation structure

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