JP2004022665A - Printed board with built-in component - Google Patents

Printed board with built-in component Download PDF

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Publication number
JP2004022665A
JP2004022665A JP2002172988A JP2002172988A JP2004022665A JP 2004022665 A JP2004022665 A JP 2004022665A JP 2002172988 A JP2002172988 A JP 2002172988A JP 2002172988 A JP2002172988 A JP 2002172988A JP 2004022665 A JP2004022665 A JP 2004022665A
Authority
JP
Japan
Prior art keywords
component
resin layer
insulating resin
component mounting
laminated
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
JP2002172988A
Other languages
Japanese (ja)
Inventor
Toshihisa Uehara
上原 利久
Hiroyuki Takada
高田 博之
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.)
AIREX Inc
Original Assignee
AIREX Inc
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 AIREX Inc filed Critical AIREX Inc
Priority to JP2002172988A priority Critical patent/JP2004022665A/en
Publication of JP2004022665A publication Critical patent/JP2004022665A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To prevent cracks or discontinuity of a component by reducing a stress applied to the component, when an insulating resin layer is laminated or coated. <P>SOLUTION: In a substrate 1, component mounting pads 2 are formed, corresponding to the position where the component is arranged, and an inner insulating resin layer 3 is laminated or coated so as to cover the pads 2. On the opposite surface of the inner insulating resin layer 3 to the substrate 1, the component 4 is mounted according to the component mounting pads 2, and an outer insulating resin layer 5 is laminated or coated so as to cover the component 4. Through-holes 6, penetrating the component mounting pads 2 and connection side ends 40 of the component 4, are formed protruding, and the inner circumferential wall faces and the circumferential parts of the openings are plated with copper 7 and are electrically connected. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明が属する技術分野】
本発明は、プリント配線板の内部に抵抗、コンデンサー等の電子部品を配設してプリント配線板の小型化を図り、電子機器の小型化、高機能化を促進することのできる部品内蔵プリント配線板に関する。
【0002】
【従来の技術】
近来、電子機器において、小型化、多機能化、高機能化に対する要求が多大となってきている。
しかしながら、多機能化、高機能化の要求に応えるためには、多くの電子部品やICが必要であり、一方小型化の要求に応えるためには、より小さいサイズのプリント配線板が必要とされている。
そこで、プリント配線板の小型化の要求に応えるために、電子部品やICをプリント配線板に直接配設することが行われている。
【0003】
従来の部品内蔵プリント配線板は、抵抗、コンデンサー、リアクタンス、IC等の電気部品や素子である部品自体を、基材表面の部品実装パッド上に位置合わせして実装し、その上から絶縁材料を積層又はコーティングした後、スルーホール(貫通孔)やバイアホール(非貫通孔)等の導通接続孔を穿設することにより導通させることで形成される。
【0004】
例えば図4に示すように、絶縁材料から成る基材aの表面に配設され、抵抗、コンデンサー、リアクタンス、IC等の部品を載置実装する電極である部品実装パッドbの上に、部品(抵抗、コンデンサー、リアクタンス、IC等の電気部品及び素子等)cが実装される。
次に図5に示すように、その上から絶縁樹脂層eで覆って積層又はコーティングして、スルーホール(貫通孔)gを穿設し、スルーホールgの内面にメッキ層fを形成して部品cを電気的に接続する電極とする。
【0005】
【発明が解決しようとする課題】
しかしながら、上記従来の部品内蔵プリント配線板においては、基材aの表面が平坦であり、部品実装パッドbは厚さを有しているために、部品実装パッドbの上方に部品実装パッドbの厚さに等しい高さの空隙dが形成されるから、絶縁樹脂層eを積層又はコーティングする際、部品cに応力がかかって部品割れh(図6参照)や断線が多発する恐れがあるという問題があった。
【0006】
本発明の目的は、絶縁樹脂層を積層又はコーティングする際に部品にかかる応力を低減させ、部品割れや断線の発生を防止することである。
【0007】
【課題を解決するための手段】
上記目的を達成するために本発明の部品内蔵プリント配線板は、基材に部品実装パッドを配設して部品を設置し、絶縁樹脂層を積層又はコーティングする部品内蔵プリント配線板において、基材表面に部品実装パッドを配設し、その上から中間絶縁樹脂層を積層又はコーティングし、中間絶縁樹脂層の基材と反対側面に部品実装パッドに合わせて部品を配置した後、外側絶縁樹脂層を積層又はコーティングすることにより、部品実装パッドの周辺に、部品実装パッドの厚さによる空隙を生じることが無くなるから、絶縁樹脂層の積層又はコーティングの際に、部品にかかる応力が低下し、部品割れや断線の不具合の発生を防止することができる。
また、スルーホールやバイアホールを設けることで部品や部品実装パッド等の回路の電気的接続を確実にすることができる。
【0008】
【発明の実施の形態】
本発明の実施例を、図を参照して説明する。
図2において、絶縁樹脂層である基材1の表面に、回路の部品実装位置に対応して部品実装パッド2が配設され、部品実装パッド2の上から中間絶縁樹脂層3を積層又はコーティングして、基材1と反対側の中間絶縁樹脂層3の表面を平滑にする。
これにより、部品実装パッド2の周辺に、部品実装パッド2の厚さによる空隙を生じることが無くなる。
【0009】
次に図3に示すように、基材1と反対側の中間絶縁樹脂層3の表面(図3における上面)に、部品実装パッド2に対応させて抵抗、コンデンサー、リアクタンス、IC等の電気部品及び素子等の部品4を設置実装し、その上から外側絶縁樹脂層5を積層又はコーティングする。
この時、部品4の接続側端部40の位置を、部品実装パッド2の位置に合致させて設置している。
【0010】
なお、中間絶縁樹脂層3並びに外側絶縁樹脂層5は透明度のある絶縁樹脂を用いることで、部品実装パッド2並びに部品4の設置位置を容易に確認することができ、部品4の実装位置を正確に定めることができる。
部品4の接続側端部(端子部)40を、中間絶縁樹脂層3を挟んで部品実装パッド2の直上に配設する。
【0011】
図1に示すように、部品実装パッド2及び部品4の接続側端部40、並びに基材1、中間絶縁樹脂層3、外側絶縁樹脂層5を貫通するスルーホール6を穿設してスルーホール6の内周壁面及び開口部周囲に銅メッキ7を施し、電気的に接続する。
【0012】
この構成により、部品実装パッドの周辺に、部品実装パッドの厚さによる空隙を生じることが無くなるから、絶縁樹脂層の積層又はコーティングの際、部品にかかる応力が低下し、部品割れや断線の不具合の発生を防止することができる。また、スルーホールやバイアホールを設けることで部品や部品実装パッド等の回路の電気的接続を確実にすることができる。
【0013】
【発明の効果】
本発明は、上述のとおり構成されているから次に述べる効果を奏する。
基材表面に部品実装パッドを配設し、その上から中間絶縁樹脂層を積層又はコーティングし、中間絶縁樹脂層の基材と反対側面に部品実装パッドに合わせて部品を配置した後、外側絶縁樹脂層を積層又はコーティングすることにより、部品実装パッドの周辺に、部品実装パッドの厚さによる空隙を生じることが無くなるから、絶縁樹脂層の積層又はコーティングの際に、部品にかかる応力が低下し、部品割れや断線の不具合の発生を防止することができる。
また、スルーホールやバイアホールを設けることで部品や部品実装パッド等の回路の電気的接続を確実にすることができる。
【図面の簡単な説明】
【図1】本発明の実施例である部品内蔵プリント配線板の概略構成図である。
【図2】本発明の部品内蔵プリント配線板の製造工程説明図である。
【図3】同じく本発明の部品内蔵プリント配線板の製造工程説明図である。
【図4】従来の部品内蔵プリント配線板の概略構成図である。
【図5】従来の部品内蔵プリント配線板の概略構成図である。
【図6】従来の部品内蔵プリント配線板の概略構成図である。
【符号の説明】
1 基材、2 部品実装パッド、3 中間絶縁樹脂層、4 部品
40 接続側端部(端子部)、5 外側絶縁樹脂層、6 スルーホール、
7 銅メッキ
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a printed wiring board with a built-in component capable of disposing electronic components such as a resistor and a capacitor inside the printed wiring board to reduce the size of the printed wiring board and to promote the miniaturization and high functionality of electronic devices. Regarding the board.
[0002]
[Prior art]
2. Description of the Related Art In recent years, there has been an increasing demand for downsizing, multifunctionality, and high functionality in electronic devices.
However, many electronic components and ICs are required to meet the demands for multi-functionality and high functionality, while smaller size printed wiring boards are required to meet the demands for miniaturization. ing.
Therefore, in order to meet the demand for downsizing of the printed wiring board, electronic components and ICs are directly provided on the printed wiring board.
[0003]
Conventional printed wiring boards with built-in components are mounted by positioning electrical components such as resistors, capacitors, reactances, ICs, and other components, which are elements, on component mounting pads on the surface of the base material, and then applying an insulating material. After lamination or coating, it is formed by conducting by connecting holes such as through holes (through holes) and via holes (non-through holes).
[0004]
For example, as shown in FIG. 4, a component (a) is disposed on a component mounting pad b which is disposed on the surface of a base material a made of an insulating material and is an electrode for mounting components such as a resistor, a capacitor, a reactance, and an IC. The electrical components and elements such as resistors, capacitors, reactances, and ICs) are mounted.
Next, as shown in FIG. 5, the upper surface is covered with an insulating resin layer e, laminated or coated, a through hole (through hole) g is formed, and a plating layer f is formed on the inner surface of the through hole g. The component c is an electrode for electrical connection.
[0005]
[Problems to be solved by the invention]
However, in the above-mentioned conventional printed wiring board with a built-in component, the surface of the base material a is flat and the component mounting pad b has a thickness, so that the component mounting pad b is located above the component mounting pad b. Since the gap d having a height equal to the thickness is formed, when the insulating resin layer e is laminated or coated, a stress is applied to the component c, and there is a possibility that the component crack h (see FIG. 6) or disconnection may occur frequently. There was a problem.
[0006]
An object of the present invention is to reduce stress applied to a component when laminating or coating an insulating resin layer, and to prevent the occurrence of component cracking and disconnection.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a component-embedded printed wiring board according to the present invention includes a component-embedded printed wiring board in which component mounting pads are arranged on a substrate, components are installed, and an insulating resin layer is laminated or coated. After mounting the component mounting pads on the surface, laminating or coating the intermediate insulating resin layer from above, and arranging the components according to the component mounting pads on the side of the intermediate insulating resin layer opposite to the base material, the outer insulating resin layer By laminating or coating the component mounting pad, there is no gap around the component mounting pad due to the thickness of the component mounting pad, so that the stress applied to the component during lamination or coating of the insulating resin layer is reduced, It is possible to prevent the occurrence of cracks and breaks.
Further, by providing through holes and via holes, electrical connection of circuits such as components and component mounting pads can be ensured.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
In FIG. 2, component mounting pads 2 are provided on the surface of a base material 1 which is an insulating resin layer, corresponding to the component mounting position of a circuit, and an intermediate insulating resin layer 3 is laminated or coated from above the component mounting pads 2. Then, the surface of the intermediate insulating resin layer 3 on the side opposite to the substrate 1 is smoothed.
This eliminates the occurrence of a gap around the component mounting pad 2 due to the thickness of the component mounting pad 2.
[0009]
Next, as shown in FIG. 3, on the surface (the upper surface in FIG. 3) of the intermediate insulating resin layer 3 on the side opposite to the base material 1, electrical components such as resistors, capacitors, reactances, ICs, etc. And a component 4 such as an element is installed and mounted, and an outer insulating resin layer 5 is laminated or coated thereon.
At this time, the position of the connection side end 40 of the component 4 is set so as to match the position of the component mounting pad 2.
[0010]
By using a transparent insulating resin for the intermediate insulating resin layer 3 and the outer insulating resin layer 5, the installation positions of the component mounting pads 2 and the components 4 can be easily checked, and the mounting positions of the components 4 can be accurately determined. Can be determined.
The connection-side end (terminal portion) 40 of the component 4 is disposed immediately above the component mounting pad 2 with the intermediate insulating resin layer 3 interposed therebetween.
[0011]
As shown in FIG. 1, a through hole 6 penetrating the connection side end 40 of the component mounting pad 2 and the component 4, the base material 1, the intermediate insulating resin layer 3, and the outer insulating resin layer 5 is formed. Copper plating 7 is applied to the inner peripheral wall surface and the periphery of the opening of 6 to be electrically connected.
[0012]
With this configuration, no gap is formed around the component mounting pad due to the thickness of the component mounting pad, so that the stress applied to the component during lamination or coating of the insulating resin layer is reduced, and the component is cracked or disconnected. Can be prevented from occurring. Further, by providing through holes and via holes, electrical connection of circuits such as components and component mounting pads can be ensured.
[0013]
【The invention's effect】
The present invention has the following effects because it is configured as described above.
After mounting the component mounting pads on the surface of the base material, laminating or coating the intermediate insulating resin layer from above, and arranging the components according to the component mounting pads on the side of the intermediate insulating resin layer opposite to the base material, then By laminating or coating the resin layer, there is no gap due to the thickness of the component mounting pad around the component mounting pad, so the stress applied to the component during lamination or coating of the insulating resin layer decreases. In addition, it is possible to prevent the occurrence of a defect such as a component crack or disconnection.
Further, by providing through holes and via holes, electrical connection of circuits such as components and component mounting pads can be ensured.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a printed wiring board with a built-in component according to an embodiment of the present invention.
FIG. 2 is an explanatory view of a manufacturing process of a printed wiring board with a built-in component according to the present invention.
FIG. 3 is a view illustrating a manufacturing process of the printed wiring board with a built-in component according to the present invention.
FIG. 4 is a schematic configuration diagram of a conventional printed wiring board with a built-in component.
FIG. 5 is a schematic configuration diagram of a conventional printed wiring board with a built-in component.
FIG. 6 is a schematic configuration diagram of a conventional printed wiring board with a built-in component.
[Explanation of symbols]
Reference Signs List 1 base material, 2 component mounting pads, 3 intermediate insulating resin layer, 4 components 40 connection side end (terminal portion), 5 outer insulating resin layer, 6 through hole,
7 Copper plating

Claims (1)

基材に部品実装パッドを配設して部品を設置し、絶縁樹脂層を積層する部品内蔵プリント配線板において、基材表面に部品実装パッドを配設し、その上から中間絶縁樹脂層を積層又はコーティングし、中間絶縁樹脂層の基材と反対側面に部品実装パッドに合わせて部品を配置した後、外側絶縁樹脂層を積層又はコーティングし、部品実装パッドとの導通接続孔を有することを特徴とする部品内蔵プリント配線板。Component mounting pads are arranged on the base material, components are installed, and the insulating resin layer is laminated.In the component built-in printed wiring board, component mounting pads are arranged on the substrate surface, and the intermediate insulating resin layer is laminated from above. Alternatively, after coating and arranging the component on the side opposite to the base material of the intermediate insulating resin layer according to the component mounting pad, the outer insulating resin layer is laminated or coated and has a conductive connection hole with the component mounting pad. A printed wiring board with built-in components.
JP2002172988A 2002-06-13 2002-06-13 Printed board with built-in component Pending JP2004022665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002172988A JP2004022665A (en) 2002-06-13 2002-06-13 Printed board with built-in component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002172988A JP2004022665A (en) 2002-06-13 2002-06-13 Printed board with built-in component

Publications (1)

Publication Number Publication Date
JP2004022665A true JP2004022665A (en) 2004-01-22

Family

ID=31172403

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002172988A Pending JP2004022665A (en) 2002-06-13 2002-06-13 Printed board with built-in component

Country Status (1)

Country Link
JP (1) JP2004022665A (en)

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