JP2007036013A - Circuit device and its manufacturing method - Google Patents

Circuit device and its manufacturing method Download PDF

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JP2007036013A
JP2007036013A JP2005218722A JP2005218722A JP2007036013A JP 2007036013 A JP2007036013 A JP 2007036013A JP 2005218722 A JP2005218722 A JP 2005218722A JP 2005218722 A JP2005218722 A JP 2005218722A JP 2007036013 A JP2007036013 A JP 2007036013A
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circuit board
circuit
insulating layer
conductive pattern
groove
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JP4845090B2 (en
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Noriaki Sakamoto
則明 坂本
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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    • 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
    • H01L2224/26Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
    • H01L2224/31Structure, shape, material or disposition of the layer connectors after the connecting process
    • H01L2224/32Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
    • H01L2224/321Disposition
    • H01L2224/32151Disposition the layer connector 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
    • H01L2224/32221Disposition the layer connector 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
    • H01L2224/32225Disposition the layer connector 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 non-metallic, e.g. insulating substrate with or without metallisation
    • 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
    • H01L2224/44Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L2224/45Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • H01L2224/45001Core members of the connector
    • H01L2224/45099Material
    • H01L2224/451Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
    • H01L2224/45138Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
    • H01L2224/45144Gold (Au) as principal constituent
    • 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
    • H01L2224/48225Connecting 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 non-metallic, e.g. insulating substrate with or without metallisation
    • H01L2224/48227Connecting 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 non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
    • 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
    • H01L2224/73Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
    • H01L2224/732Location after the connecting process
    • H01L2224/73251Location after the connecting process on different surfaces
    • H01L2224/73265Layer and wire connectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/19Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
    • H01L2924/191Disposition
    • H01L2924/19101Disposition of discrete passive components
    • H01L2924/19105Disposition of discrete passive components in a side-by-side arrangement on a common die mounting substrate
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/19Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
    • H01L2924/191Disposition
    • H01L2924/19101Disposition of discrete passive components
    • H01L2924/19107Disposition of discrete passive components off-chip wires

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  • Insulated Metal Substrates For Printed Circuits (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a circuit device which improves the wiring density of a conductive pattern formed on the top face of a circuit substrate, and to provide a method of manufacturing the circuit device. <P>SOLUTION: The circuit device is equipped with a circuit substrate 11 composed of a metal, whose front surface is coated with an insulating layer 12; a conductive pattern 13 formed on the front surface of the insulating layer 12; and a circuit element electrically connected to the conductive pattern 13. Further, a groove 18 is formed by partially hollowing the top face periphery of the circuit substrate 11. By forming the groove 18, it is possible to restrict a region where a crack is generated in the insulating layer 12. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は回路装置およびその製造方法に関し、特に、回路基板の表面に導電パターンおよび回路素子から成る電気回路が形成された回路装置およびその製造方法に関するものである。   The present invention relates to a circuit device and a method for manufacturing the circuit device, and more particularly to a circuit device in which an electric circuit including a conductive pattern and a circuit element is formed on the surface of a circuit board, and a method for manufacturing the circuit device.

図7(A)を参照して、従来の混成集積回路装置100の構成を説明する(下記特許文献1を参照)。矩形の基板101の表面には、絶縁層102を介して導電パターン103が形成されている。導電パターン103の所望の箇所に回路素子105が固着されて、所定の電気回路が形成される。ここでは、回路素子として半導体素子およびチップ素子が、導電パターン103に接続されている。リード104は、基板101の周辺部に形成された導電パターン103から成るパッド109に接続され、外部端子として機能している。封止樹脂108は、基板101の表面に形成された電気回路を封止する機能を有する。   With reference to FIG. 7A, a configuration of a conventional hybrid integrated circuit device 100 will be described (see Patent Document 1 below). A conductive pattern 103 is formed on the surface of the rectangular substrate 101 through an insulating layer 102. The circuit element 105 is fixed to a desired portion of the conductive pattern 103 to form a predetermined electric circuit. Here, a semiconductor element and a chip element are connected to the conductive pattern 103 as circuit elements. The lead 104 is connected to a pad 109 made of a conductive pattern 103 formed in the peripheral portion of the substrate 101 and functions as an external terminal. The sealing resin 108 has a function of sealing an electric circuit formed on the surface of the substrate 101.

基板101の裏面は、装置全体の放熱性を向上させるために、封止樹脂108から外部に露出させても良い。更には、全体の耐湿性を向上させるために、基板101の裏面も含めた全体を封止樹脂108により被覆しても良い。
特開平5−102645号公報
The back surface of the substrate 101 may be exposed to the outside from the sealing resin 108 in order to improve the heat dissipation of the entire apparatus. Furthermore, the entire surface including the back surface of the substrate 101 may be covered with the sealing resin 108 in order to improve the overall moisture resistance.
JP-A-5-102645

図7(B)を参照して、基板101は打ち抜き加工が施されるので、基板101の周辺部に位置する絶縁層102にはクラックが発生する。クラックが発生した領域の絶縁層102は耐圧性が低下するので、この領域の絶縁層102の上面には導電パターン103は形成できない。このことから、導電パターン103と基板101との耐圧を確保するために、導電パターン103は、基板101の周縁部から離間した内部に形成されていた。具体的には、基板101の周縁部と導電パターン103との距離(L10)は、1.5mm以上離間されていた。従って、基板101の周辺部は、導電パターン103が形成されないデッドスペースとなり、配線密度が低下してしまう問題があった。   Referring to FIG. 7B, since the substrate 101 is punched, a crack is generated in the insulating layer 102 located in the peripheral portion of the substrate 101. Since the pressure resistance of the insulating layer 102 in the region where the crack occurs is reduced, the conductive pattern 103 cannot be formed on the upper surface of the insulating layer 102 in this region. For this reason, the conductive pattern 103 is formed in the interior separated from the peripheral edge of the substrate 101 in order to ensure the withstand voltage between the conductive pattern 103 and the substrate 101. Specifically, the distance (L10) between the peripheral portion of the substrate 101 and the conductive pattern 103 is 1.5 mm or more. Therefore, there is a problem that the peripheral portion of the substrate 101 becomes a dead space where the conductive pattern 103 is not formed, and the wiring density is lowered.

本発明は、上述した問題を鑑みてなされ、本発明の主な目的は、回路基板の上面に形成される導電パターンの配線密度を向上させた回路装置およびその製造方法を提供することにある。   The present invention has been made in view of the above-described problems, and a main object of the present invention is to provide a circuit device in which the wiring density of a conductive pattern formed on the upper surface of a circuit board is improved, and a method for manufacturing the circuit device.

本発明の回路装置は、金属から成る回路基板と、前記回路基板の表面を被覆する絶縁層と、前記絶縁層の表面に形成された導電パターンと、前記導電パターンに電気的に接続された回路素子とを具備し、前記回路基板の周辺部に、前記回路基板の表面を窪ませた溝部を設けることを特徴とする。   The circuit device of the present invention includes a circuit board made of metal, an insulating layer covering the surface of the circuit board, a conductive pattern formed on the surface of the insulating layer, and a circuit electrically connected to the conductive pattern. And a groove portion in which the surface of the circuit board is recessed is provided in a peripheral portion of the circuit board.

本発明の回路装置の製造方法は、金属基板の主面を部分的に窪ませて溝部を形成する工程と、前記溝部も含めた前記金属基板の主面を絶縁層により被覆する工程と、前記溝部が設けられた箇所で前記金属基板を個別の回路基板に分割する工程と、前記回路基板の表面に導電パターンおよび回路素子から成る電気回路を形成する工程とを具備することを特徴とする。   The method of manufacturing a circuit device according to the present invention includes a step of partially recessing a main surface of a metal substrate to form a groove, a step of covering the main surface of the metal substrate including the groove with an insulating layer, The method includes a step of dividing the metal substrate into individual circuit boards at locations where grooves are provided, and a step of forming an electric circuit including a conductive pattern and circuit elements on the surface of the circuit board.

本発明によれば、回路基板の周縁部を部分的に窪ませて溝部を形成しているので、回路基板を分離する打ち抜きの工程等にて絶縁層に発生するクラックを、溝部の領域でストップさせることが出来る。このことにより、クラックが発生することにより耐圧が低下する絶縁層の領域を狭くすることが出来るので、回路基板の周縁部付近まで導電パターンを形成することが可能となり、配線密度を向上させることが出来る。   According to the present invention, since the groove portion is formed by partially recessing the peripheral portion of the circuit board, the crack generated in the insulating layer in the punching process for separating the circuit board is stopped in the region of the groove portion. It can be made. As a result, the region of the insulating layer where the withstand voltage decreases due to the occurrence of cracks can be narrowed, so that it is possible to form a conductive pattern up to the vicinity of the peripheral portion of the circuit board and improve the wiring density. I can do it.

<第1の実施の形態>
本形態では、回路装置の一例として混成集積回路装置10の構造を説明する。
<First Embodiment>
In this embodiment, the structure of the hybrid integrated circuit device 10 will be described as an example of a circuit device.

図1を参照して、本発明の混成集積回路装置10の構成を説明する。図1(A)は混成集積回路装置10を斜め上方から見た斜視図である。図1(B)は図1(A)のB−B’線に於ける断面図である。図1(C)は回路基板11を部分的に拡大した断面図である。   The configuration of the hybrid integrated circuit device 10 of the present invention will be described with reference to FIG. FIG. 1A is a perspective view of the hybrid integrated circuit device 10 as viewed obliquely from above. FIG. 1B is a cross-sectional view taken along line B-B ′ of FIG. FIG. 1C is a cross-sectional view in which the circuit board 11 is partially enlarged.

図1(A)および図1(B)を参照して、矩形の回路基板11の上面は、絶縁層12により全面的に被覆されている。そして、絶縁層12の表面に形成された導電パターン13の所定の箇所には、半田や導電性ペーストを介して、半導体素子15Aおよびチップ素子15Bから成る回路素子が電気的に接続されている。回路基板11の表面に形成された導電パターン13、半導体素子15Aおよびチップ素子15Bは、封止樹脂14により被覆されている。   Referring to FIGS. 1A and 1B, the upper surface of rectangular circuit board 11 is entirely covered with insulating layer 12. And the circuit element which consists of the semiconductor element 15A and the chip element 15B is electrically connected to the predetermined location of the conductive pattern 13 formed in the surface of the insulating layer 12 via solder or a conductive paste. The conductive pattern 13, the semiconductor element 15 </ b> A, and the chip element 15 </ b> B formed on the surface of the circuit board 11 are covered with a sealing resin 14.

回路基板11は、アルミニウム(Al)や銅(Cu)等の金属を主材料とする金属基板である。回路基板11の具体的な大きさは、例えば、縦×横×厚さ=30mm×15mm×0.5mm程度である。本形態では、回路基板11の上面周縁部を部分的に窪ませて、溝部18が形成されている。   The circuit board 11 is a metal board whose main material is a metal such as aluminum (Al) or copper (Cu). The specific size of the circuit board 11 is, for example, about vertical × horizontal × thickness = 30 mm × 15 mm × 0.5 mm. In this embodiment, the groove 18 is formed by partially denting the peripheral edge of the upper surface of the circuit board 11.

回路基板11の材料としては銅が好適である。銅を主材料とする回路基板11は、厚みが0.5mm程度に薄くても温度変化等による反りが小さく、且つ機械的強度も十分である。更に、回路基板11の材料として銅を採用することにより、回路基板11上に形成された導電パターン13の表面に、金メッキ膜や銀メッキ膜を容易に形成することができる。また、回路基板11としてアルミニウムより成る基板を採用した場合は、回路基板11の両主面はアルマイト処理される。   The material for the circuit board 11 is preferably copper. The circuit board 11 made mainly of copper is small in warpage due to temperature change or the like and has sufficient mechanical strength even if the thickness is as thin as about 0.5 mm. Further, by adopting copper as the material of the circuit board 11, a gold plating film or a silver plating film can be easily formed on the surface of the conductive pattern 13 formed on the circuit board 11. Further, when a substrate made of aluminum is adopted as the circuit substrate 11, both main surfaces of the circuit substrate 11 are anodized.

絶縁層12は、回路基板11の上面全域を覆うように形成されている。本形態では、回路基板11の周辺部に設けた溝部18の上面も、絶縁層12により被覆されている。絶縁層12は、AL等のフィラーが高充填されたエポキシ樹脂等から成る。フィラーが含有された絶縁層12の熱抵抗は低減されるので、内蔵される回路素子から発生した熱を、回路基板11を介して積極的に外部に放出することができる。絶縁層12の具体的な厚みは、例えば50μm程度である。この厚みの絶縁層12により、4KVの耐圧(絶縁破壊耐圧)を確保することができる。 The insulating layer 12 is formed so as to cover the entire upper surface of the circuit board 11. In this embodiment, the upper surface of the groove 18 provided in the peripheral portion of the circuit board 11 is also covered with the insulating layer 12. The insulating layer 12 is made of an epoxy resin or the like that is highly filled with a filler such as AL 2 O 3 . Since the thermal resistance of the insulating layer 12 containing the filler is reduced, the heat generated from the built-in circuit element can be positively released to the outside through the circuit board 11. The specific thickness of the insulating layer 12 is, for example, about 50 μm. With this thickness of the insulating layer 12, it is possible to ensure a breakdown voltage (dielectric breakdown voltage) of 4 KV.

また、回路基板11裏面の耐圧性を向上させる為に、回路基板11の裏面も絶縁層により被覆しても良い。   Further, in order to improve the pressure resistance of the back surface of the circuit board 11, the back surface of the circuit board 11 may be covered with an insulating layer.

導電パターン13は銅等の金属から成り、所定の電気回路が形成されるように絶縁層12の表面に形成される。また、リード25が導出する辺に、導電パターン13からなるパッド13Aが形成される。ここでは単層の導電パターン13が図示されているが、絶縁層を介して積層された多層の導電パターン13が回路基板11の上面に形成されても良い。   The conductive pattern 13 is made of a metal such as copper, and is formed on the surface of the insulating layer 12 so that a predetermined electric circuit is formed. A pad 13A made of the conductive pattern 13 is formed on the side from which the lead 25 is led out. Although a single-layer conductive pattern 13 is illustrated here, a multilayer conductive pattern 13 laminated via an insulating layer may be formed on the upper surface of the circuit board 11.

半導体素子15Aおよびチップ素子15Bから成る回路素子は、導電パターン13の所定の箇所に固着されている。半導体素子15Aとしては、トランジスタ、LSIチップ、ダイオード等が採用される。ここでは、半導体素子15Aと導電パターン13とは、金属細線17を介して接続される。チップ素子15Bとしては、チップ抵抗、チップコンデンサ、インダクタンス、サーミスタ、アンテナ、発振器など、両端に電極部を有する素子が採用される。更にまた、樹脂封止型のパッケージ等も、回路素子として導電パターン13に固着することができる。   A circuit element including the semiconductor element 15A and the chip element 15B is fixed to a predetermined portion of the conductive pattern 13. As the semiconductor element 15A, a transistor, an LSI chip, a diode, or the like is employed. Here, the semiconductor element 15 </ b> A and the conductive pattern 13 are connected via a thin metal wire 17. As the chip element 15B, an element having electrode portions at both ends, such as a chip resistor, a chip capacitor, an inductance, a thermistor, an antenna, and an oscillator, is employed. Furthermore, a resin-sealed package or the like can be fixed to the conductive pattern 13 as a circuit element.

リード25は、一端が回路基板11上のパッド13Aと電気的に接続され、他端が封止樹脂14から外部に導出している。リード25は、銅(Cu)、アルミニウム(Al)またはFe−Niの合金等などを主成分とした金属から成る。   One end of the lead 25 is electrically connected to the pad 13 </ b> A on the circuit board 11, and the other end is led out from the sealing resin 14. The lead 25 is made of a metal whose main component is copper (Cu), aluminum (Al), an Fe—Ni alloy, or the like.

ここでは、回路基板11の対向する2つの側辺に沿って設けたパッド13Aにリード25を接続している。しかしながら、回路基板11の1つの側辺または4つの側辺に沿ってパッド13Aを設けて、このパッド13Aにリード25を接続しても良い。   Here, the lead 25 is connected to the pad 13A provided along two opposing sides of the circuit board 11. However, the pad 13A may be provided along one side or four sides of the circuit board 11, and the lead 25 may be connected to the pad 13A.

封止樹脂14は、熱硬化性樹脂を用いるトランスファーモールドまたは熱可塑性樹脂を用いるインジェクションモールドにより形成される。図1(B)では、封止樹脂14により、導電パターン13、半導体素子15A、チップ素子15B、金属細線17が封止されている。図では、放熱性を向上させるために回路基板11の裏面が封止樹脂14から露出しているが、耐圧性を向上させるために回路基板11の裏面も封止樹脂14により被覆しても良い。   The sealing resin 14 is formed by a transfer mold using a thermosetting resin or an injection mold using a thermoplastic resin. In FIG. 1B, the conductive pattern 13, the semiconductor element 15 </ b> A, the chip element 15 </ b> B, and the thin metal wire 17 are sealed with the sealing resin 14. In the figure, the back surface of the circuit board 11 is exposed from the sealing resin 14 in order to improve heat dissipation, but the back surface of the circuit board 11 may be covered with the sealing resin 14 in order to improve pressure resistance. .

図1(C)を参照して、回路基板11に形成される溝部18を説明する。溝部18は、回路基板11の上面周辺部を窪ませた部位である。更に、溝部18は回路基板11の外周部全域に渡って形成されている。溝部18の具体的な形状は曲面と成っており、その幅(L2)は例えば0.5mm程度であり、深さ(L3)は例えば0.5mm程度である。   With reference to FIG. 1C, the groove 18 formed in the circuit board 11 will be described. The groove portion 18 is a portion where the peripheral portion of the upper surface of the circuit board 11 is recessed. Further, the groove 18 is formed over the entire outer periphery of the circuit board 11. The specific shape of the groove 18 is a curved surface, and the width (L2) is, for example, about 0.5 mm, and the depth (L3) is, for example, about 0.5 mm.

溝部18を回路基板11に形成することにより、絶縁層12にクラックが発生する領域を狭くして、導電パターン13を回路基板11の周辺部付近まで形成することが可能となる。   By forming the groove 18 in the circuit board 11, it is possible to narrow a region where a crack occurs in the insulating layer 12 and to form the conductive pattern 13 up to the vicinity of the periphery of the circuit board 11.

具体的には、溝部18が形成された領域を含む回路基板11の上面は、フィラーが高充填された絶縁層12により被覆されている。フィラーが高充填された絶縁層12は脆く、クラックが発生しやすい状態となっている。従って、回路基板11に対して打ち抜き加工を行うと、打ち抜き加工による衝撃により、回路基板11の周辺部に位置する絶縁層12にはクラックが発生する。クラックが発生して耐圧が劣化した領域の絶縁層12上面には、導電パターン13は形成できない。上述した背景技術では、回路基板11の上面全体が平坦であったので、絶縁層12にクラックが発生する面積が大きくなり、導電パターン13が形成可能な領域が小さくなってしまう問題があった。   Specifically, the upper surface of the circuit board 11 including the region where the groove 18 is formed is covered with the insulating layer 12 highly filled with filler. The insulating layer 12 highly filled with the filler is brittle and is in a state where cracks are likely to occur. Therefore, when the punching process is performed on the circuit board 11, a crack is generated in the insulating layer 12 located in the peripheral portion of the circuit board 11 due to the impact of the punching process. The conductive pattern 13 cannot be formed on the upper surface of the insulating layer 12 in the region where the breakdown voltage has deteriorated due to the occurrence of cracks. In the background art described above, since the entire upper surface of the circuit board 11 is flat, there is a problem that an area where a crack is generated in the insulating layer 12 is increased and a region where the conductive pattern 13 can be formed is reduced.

そこで本形態では、溝部18を設けることにより、溝部18の上面を被覆する絶縁層12のみにクラックを発生させ、クラックが回路基板11の内部の領域に発生することを防止している。このことにより、溝部18が形成された領域のみがデッドスペースとなり、他の領域の回路基板11上面には、導電パターン13を形成することが可能となる。具体的には、回路基板11の終端部と導電パターン13とが離間する距離(L1)を、溝部18の幅と同じ0.5mm程度にすることも可能である。更には、耐圧性をより確実に確保するために、上記した距離(L1)を1mm程度に確保しても良い。   Therefore, in the present embodiment, by providing the groove portion 18, a crack is generated only in the insulating layer 12 covering the upper surface of the groove portion 18, and the crack is prevented from occurring in the region inside the circuit board 11. As a result, only the region where the groove 18 is formed becomes a dead space, and the conductive pattern 13 can be formed on the upper surface of the circuit board 11 in another region. Specifically, the distance (L1) at which the terminal portion of the circuit board 11 and the conductive pattern 13 are separated can be set to about 0.5 mm, which is the same as the width of the groove 18. Furthermore, the above-mentioned distance (L1) may be secured to about 1 mm in order to ensure the pressure resistance more reliably.

図2の断面図を参照して、ここでは、半田等の接合材20を介してパッド13Aの上面にリード25が固着されている。このように、回路基板11上のパッド13Aにリード25を固着する場合、回路基板11の上面端部とリード25とがショートしないように離間させる必要がある。   Referring to the cross-sectional view of FIG. 2, here, a lead 25 is fixed to the upper surface of the pad 13A through a bonding material 20 such as solder. As described above, when the lead 25 is fixed to the pad 13A on the circuit board 11, it is necessary to separate the upper end of the circuit board 11 and the lead 25 so as not to be short-circuited.

本形態では、回路基板11の上面周辺部に溝部18を設けることにより、回路基板11の上面端部を下方に位置させている。従って、回路基板11の上面端部とリード25との距離(L4)を一定以上に確保して、両者のショートを防止することが出来る。通常、上記したショートを防止するためにリード25に折り曲げ加工を施すが、本形態では直線形状のリード25が採用可能であり、コストを低減することが出来る。   In this embodiment, the groove 18 is provided around the upper surface of the circuit board 11 so that the upper surface edge of the circuit board 11 is positioned downward. Therefore, the distance (L4) between the upper end portion of the circuit board 11 and the lead 25 can be secured to a certain level or more, and a short circuit between them can be prevented. Usually, the lead 25 is bent in order to prevent the above-described short circuit. However, in this embodiment, the linear lead 25 can be adopted, and the cost can be reduced.

<第2の実施の形態>
本形態では、図3から図6を参照して、混成集積回路装置10の製造方法を説明する。本形態の製造方法では、溝部18を設けた金属基板21を打ち抜き加工により分割して、個別の回路基板11を形成している。更に本形態では、多数個のリード25が設けられたリードフレーム40を用いて、混成集積回路装置10を製造する。
<Second Embodiment>
In the present embodiment, a method for manufacturing the hybrid integrated circuit device 10 will be described with reference to FIGS. In the manufacturing method of the present embodiment, the individual circuit board 11 is formed by dividing the metal substrate 21 provided with the groove 18 by punching. Further, in this embodiment, the hybrid integrated circuit device 10 is manufactured using the lead frame 40 provided with a large number of leads 25.

図3を参照して、先ず、多数個の回路基板11が形成可能な大型の金属基板21の表面に溝部18および導電パターン13を形成する。図3の各図は、本工程を示す断面図である。   Referring to FIG. 3, first, grooves 18 and conductive patterns 13 are formed on the surface of a large metal substrate 21 on which a large number of circuit boards 11 can be formed. Each drawing in FIG. 3 is a cross-sectional view showing this step.

図3(A)および図3(B)を参照して、先ず、金属基板21の上面を、エッチングマスク26により選択的に被覆する。金属基板21は、銅(Cu)、アルミニウム(Al)またはFe−Niの合金等などを主成分とした金属から成る。これらの材料の中でも、銅はエッチング加工が容易な材料であり、金属基板21の材料として好適である。   With reference to FIGS. 3A and 3B, first, the upper surface of the metal substrate 21 is selectively covered with an etching mask 26. The metal substrate 21 is made of a metal mainly composed of copper (Cu), aluminum (Al), Fe—Ni alloy, or the like. Among these materials, copper is a material that can be easily etched, and is suitable as a material for the metal substrate 21.

エッチングマスク26からは、溝部18が形成予定の金属基板21の上面が露出している。エッチングマスク26を介してウェットエッチングを行うことにより、溝部18が形成される。溝部18の幅は例えば1mm程度であり、その深さは0.5mm程度である。   From the etching mask 26, the upper surface of the metal substrate 21 where the groove 18 is to be formed is exposed. By performing wet etching through the etching mask 26, the groove portion 18 is formed. The width of the groove 18 is, for example, about 1 mm and the depth is about 0.5 mm.

溝部18は、エッチング以外の方法でも形成可能である。例えば、プレス加工やダイシングによっても溝部18を形成できる。   The groove 18 can be formed by a method other than etching. For example, the groove 18 can be formed by pressing or dicing.

図3(C)を参照して、次に、金属基板21の上面を絶縁層12により被覆する。ここでは、溝部18を含めた金属基板21の上面が被覆されるように、絶縁層12を形成する。絶縁層12は、AL等のフィラーが高充填されたエポキシ樹脂等から成り、その厚みは、例えば50μm程度である。ここで、金属基板21の裏面の耐圧性が要求される場合は、金属基板21の裏面も絶縁層12により被覆されても良い。 Next, referring to FIG. 3C, the upper surface of the metal substrate 21 is covered with the insulating layer 12. Here, the insulating layer 12 is formed so that the upper surface of the metal substrate 21 including the groove 18 is covered. The insulating layer 12 is made of an epoxy resin or the like highly filled with a filler such as AL 2 O 3 and has a thickness of, for example, about 50 μm. Here, when the pressure resistance of the back surface of the metal substrate 21 is required, the back surface of the metal substrate 21 may also be covered with the insulating layer 12.

図3(D)を参照して、次に、絶縁層12の表面に金属箔(不図示)を貼着した後にパターニングを行い、導電パターン13を形成する。   Referring to FIG. 3D, next, a metal foil (not shown) is attached to the surface of the insulating layer 12 and then patterned to form a conductive pattern 13.

図4を参照して、次に、打ち抜き加工を行うことにより、金属基板21から回路基板11を分離する。図4(A)は本工程を示す断面図であり、図4(B)および図4(C)は分離された回路基板11の断面図である。   Next, referring to FIG. 4, the circuit board 11 is separated from the metal substrate 21 by performing a punching process. FIG. 4A is a cross-sectional view showing this step, and FIGS. 4B and 4C are cross-sectional views of the circuit board 11 separated.

図4(A)を参照して、本工程の打ち抜き加工は、上金型27および下金型28を用いて行われる。具体的には、先ず、下金型28の上面に金属基板21を載置し、上金型27を上方から下方へ移動させて金属基板21を部分的に打ち抜く。本形態では、溝部18が設けられた領域にて金属基板21が分離されるように、打ち抜き加工が行われる。   Referring to FIG. 4A, the punching process in this step is performed using an upper mold 27 and a lower mold 28. Specifically, first, the metal substrate 21 is placed on the upper surface of the lower mold 28, and the upper mold 27 is moved downward from above to partially punch the metal substrate 21. In this embodiment, punching is performed so that the metal substrate 21 is separated in the region where the groove 18 is provided.

図4(B)を参照して、この打ち抜き加工により、溝部18を周辺部に有する回路基板11が分離される。溝部18は、回路基板11上面に於いて、周辺部全域に渡り形成される。   With reference to FIG. 4 (B), the circuit board 11 which has the groove part 18 in the peripheral part is isolate | separated by this punching process. The groove portion 18 is formed over the entire peripheral portion on the upper surface of the circuit board 11.

また、分離された回路基板11の表面には、半導体素子15Aおよびチップ素子15B等が導電パターン13に電気的に接続される。ここでは、半導体素子15Aは、金属細線17を介して導電パターン13と接続される。   Further, the semiconductor element 15 </ b> A, the chip element 15 </ b> B, and the like are electrically connected to the conductive pattern 13 on the surface of the separated circuit board 11. Here, the semiconductor element 15 </ b> A is connected to the conductive pattern 13 through the thin metal wire 17.

図4(C)を参照して、本形態では、溝部18を設けた箇所で金属基板21を分離することにより、絶縁層12に発生するクラックを抑制している。具体的には、打ち抜きを行う際に、上金型27により与えられる衝撃等により、回路基板11の周辺部に位置する絶縁層12には大きな外力が作用する。また、フィラーが高充填された樹脂から成る絶縁層12はクラックが発生しやすい。従って、金型を用いた打ち抜き加工を行うと、どうしても回路基板11の周辺部に位置する絶縁層12にはクラックが発生してしまう。   With reference to FIG.4 (C), in this form, the crack which generate | occur | produces in the insulating layer 12 is suppressed by isolate | separating the metal substrate 21 in the location in which the groove part 18 was provided. Specifically, when punching, a large external force acts on the insulating layer 12 located in the peripheral portion of the circuit board 11 due to an impact applied by the upper mold 27 or the like. In addition, the insulating layer 12 made of a resin highly filled with filler is likely to crack. Therefore, when punching using a mold is performed, cracks are inevitably generated in the insulating layer 12 located in the periphery of the circuit board 11.

本形態では、溝部18を設けた部分で打ち抜き加工を行い金属基板を分離することにより、溝部18の内部に位置する絶縁層12にクラックを発生させ、他の領域の回路基板11を被覆する絶縁層12にクラックが発生することを抑止している。従って、幅(L2)が0.5mm程度の溝部18の領域のみがデッドスペースとなり、回路基板11の大部分に導電パターン13が形成可能となる。このことにより、回路基板11の表面に於いて導電パターン13が形成可能な領域を広くすることが出来る。   In this embodiment, the metal substrate is separated by punching at the portion where the groove portion 18 is provided, thereby generating a crack in the insulating layer 12 positioned inside the groove portion 18 and insulating the circuit substrate 11 in other regions. The generation of cracks in the layer 12 is suppressed. Accordingly, only the region of the groove portion 18 having a width (L2) of about 0.5 mm becomes a dead space, and the conductive pattern 13 can be formed on most of the circuit board 11. As a result, a region where the conductive pattern 13 can be formed on the surface of the circuit board 11 can be widened.

更に、本形態では、回路基板11の上面周辺部に溝部18を設けることにより、バリ32によるショートを防止することが出来る。具体的には、本工程の打ち抜き加工により、回路基板11の上面外周部には、バリ32が発生する。このバリ32が上方に突出すると、後の工程にて回路基板11に接続されるリード等にバリ32が接触し、両者がショートしてしまう恐れがある。本形態では、回路基板11の上面周辺部に溝部18を設けることで、回路基板11の上面外周部を低くして、バリ32の上方への突出量を抑制している。従って、バリ32によるショートの危険性を低くしている。   Furthermore, in this embodiment, by providing the groove portion 18 in the peripheral portion on the upper surface of the circuit board 11, a short circuit due to the burr 32 can be prevented. Specifically, burrs 32 are generated on the outer periphery of the upper surface of the circuit board 11 by the punching process in this step. If the burr 32 protrudes upward, the burr 32 may come into contact with a lead or the like connected to the circuit board 11 in a later process, and both may be short-circuited. In this embodiment, the groove 18 is provided in the periphery of the upper surface of the circuit board 11, thereby lowering the outer periphery of the upper surface of the circuit board 11 and suppressing the upward protrusion amount of the burr 32. Therefore, the risk of a short circuit due to the burr 32 is reduced.

更に、ダイシング等の他の分離方法によっても、金属基板21から回路基板11を分離することが可能である。このような他の分離方法を採用する場合に於いても、溝18を設けることにより上記した効果を得ることができる。   Furthermore, the circuit board 11 can be separated from the metal substrate 21 by other separation methods such as dicing. Even when such other separation methods are employed, the above-described effects can be obtained by providing the grooves 18.

図5を参照して、次に、回路基板11をリードフレーム40に固定する。図5(A)は本工程を示す平面図であり、図5(B)および図5(C)は本工程の断面図である。ここで、図5(A)では、回路基板11の表面に形成される導電パターン等を省略してある。   Next, referring to FIG. 5, the circuit board 11 is fixed to the lead frame 40. FIG. 5A is a plan view showing this step, and FIGS. 5B and 5C are cross-sectional views of this step. Here, in FIG. 5A, a conductive pattern or the like formed on the surface of the circuit board 11 is omitted.

本工程以降では、多数個のリード25およびランド45が設けられたリードフレーム40を用いて、混成集積回路装置を製造する。製造工程の途中段階に於いては、ランド45に回路基板11が固着されることで、回路基板11はリードフレーム40に保持されている。   After this step, the hybrid integrated circuit device is manufactured using the lead frame 40 provided with a large number of leads 25 and lands 45. In the intermediate stage of the manufacturing process, the circuit board 11 is fixed to the land 45, so that the circuit board 11 is held by the lead frame 40.

図5(A)を参照して、ユニット46は、回路基板11が載置される領域に一端が接近した多数個のリード25と、吊りリード43を介してリードフレーム40の外枠41と連結されたランド45とから成る。   Referring to FIG. 5A, the unit 46 is connected to the outer frame 41 of the lead frame 40 via a large number of leads 25 whose one ends are close to the area where the circuit board 11 is placed, and the suspension leads 43. The land 45 is made up of.

リード25は、紙面上では、左右両方向から回路基板11が載置される領域に向かって延在している。複数個のリード25は、タイバー44により互いに連結されることで、変形が防止されている。また、後の工程にて金属細線が接続される部分のリード25の上面には、メッキ膜が形成されている。   On the paper surface, the lead 25 extends from both the left and right directions toward a region where the circuit board 11 is placed. The plurality of leads 25 are connected to each other by a tie bar 44 to prevent deformation. In addition, a plating film is formed on the upper surface of the lead 25 at a portion to which the fine metal wire is connected in a later process.

ランド45は、回路基板11が載置される領域の内部に形成されており、製造工程に於いては、回路基板11を機械的に支持する役割を有する。ランド45は、紙面上にて上下方向に延在する吊りリード43により、リードフレーム40の外枠41と連結されている。また、吊りリード43と外枠41とが連続する接続部42は幅が狭く成っている。このことにより、後の工程にて吊りリード43の外枠41からの分離が容易になる。ここでは、2つの接続部42を設けることで、ランド45および吊りリード43により、回路基板11を安定して支持している。更に、ランド45は回路基板11の裏面に残存して、装置全体の放熱性を向上させる機能も有する。   The land 45 is formed inside a region where the circuit board 11 is placed, and has a role of mechanically supporting the circuit board 11 in the manufacturing process. The land 45 is connected to the outer frame 41 of the lead frame 40 by a suspension lead 43 extending in the vertical direction on the paper surface. Further, the connecting portion 42 where the suspension lead 43 and the outer frame 41 are continuous has a narrow width. This facilitates separation of the suspension lead 43 from the outer frame 41 in a later process. Here, by providing two connection portions 42, the circuit board 11 is stably supported by the lands 45 and the suspension leads 43. Further, the land 45 remains on the back surface of the circuit board 11 and has a function of improving the heat dissipation of the entire apparatus.

図5(A)および図5(B)を参照して、表面に導電パターン13および半導体素子15A等が固着された回路基板11を、導電性または絶縁性の接着剤を介してランド45の上面に固着する。ここでは、回路基板11の対向する2つの側辺に沿って、多数個のパッド13Aが形成されている。また、パッド13Aの表面は、ボンディング性を向上させるために金メッキや銀メッキにより被覆されている。   Referring to FIGS. 5A and 5B, the circuit board 11 having the conductive pattern 13 and the semiconductor element 15A and the like fixed on the surface is attached to the upper surface of the land 45 through a conductive or insulating adhesive. It sticks to. Here, a large number of pads 13 </ b> A are formed along two opposing sides of the circuit board 11. Further, the surface of the pad 13A is covered with gold plating or silver plating in order to improve the bondability.

回路基板11を載置した後に、回路基板11上のパッド13Aをリード25とを金属細線17により接続する。パッド13Aの上面およびリード25の上面は、金等から成るメッキ膜により被覆されているので、金属細線17として金(Au)から成る金線を用いることができる。金属細線17の材料として金を採用することにより、ワイヤボンディングに係る時間を短縮することができるので、生産性を向上させることができる。   After placing the circuit board 11, the pads 13 </ b> A on the circuit board 11 are connected to the leads 25 by the fine metal wires 17. Since the upper surface of the pad 13A and the upper surface of the lead 25 are covered with a plating film made of gold or the like, a gold wire made of gold (Au) can be used as the thin metal wire 17. By adopting gold as the material of the metal thin wire 17, the time for wire bonding can be shortened, so that productivity can be improved.

図5(C)を参照して、ここでは、金属細線17によりリード25と半導体素子15Aとが直に接続されている。このように、回路基板11上の半導体素子15Aとリード25とを直に接続することにより、回路基板11上の導電パターン13の構成を簡素化することができる。   Referring to FIG. 5C, here, the lead 25 and the semiconductor element 15A are directly connected by the thin metal wire 17. Thus, the configuration of the conductive pattern 13 on the circuit board 11 can be simplified by directly connecting the semiconductor elements 15A on the circuit board 11 and the leads 25.

図6を参照して、次に、回路基板11が被覆されるように封止樹脂を形成する。図6(A)は金型を用いて回路基板11をモールドする工程を示す断面図であり、図6(B)はモールドを行った後のリードフレーム40を示す平面図である。   Next, referring to FIG. 6, a sealing resin is formed so as to cover the circuit board 11. FIG. 6A is a cross-sectional view showing a process of molding the circuit board 11 using a mold, and FIG. 6B is a plan view showing the lead frame 40 after the molding.

図6(A)を参照して、先ず、回路基板11の下方に位置するランド45の裏面を、下金型22Bに当接させる。そして、上金型22Aと下金型22Bとを当接させることにより、キャビティ23の内部に回路基板11を収納させる。更に、金型に設けたゲート(不図示)からキャビティ23に樹脂を注入して、回路基板11を封止する。本形態では、回路基板11裏面の中央部の領域はランド45により被覆されているので、この領域に封止樹脂を行き渡らせる必要がない。従って、回路基板11周辺部の下方の領域A1のみに封止樹脂を行き渡らせばよいので、封止樹脂が充填されないボイドが発生するのを防止することができる。本工程では、熱硬化性樹脂を用いたトランスファーモールドまたは、熱可塑性樹脂を用いたインジェクションモールドが行われる。また、不図示のゲートは吊りリード43の近傍に設けられている。   With reference to FIG. 6A, first, the back surface of the land 45 located below the circuit board 11 is brought into contact with the lower mold 22B. Then, the circuit board 11 is accommodated in the cavity 23 by bringing the upper mold 22A and the lower mold 22B into contact with each other. Further, resin is injected into the cavity 23 from a gate (not shown) provided in the mold, and the circuit board 11 is sealed. In this embodiment, since the central area on the back surface of the circuit board 11 is covered with the land 45, it is not necessary to spread sealing resin over this area. Therefore, since it is only necessary to spread the sealing resin only in the region A1 below the periphery of the circuit board 11, it is possible to prevent the generation of voids that are not filled with the sealing resin. In this step, transfer molding using a thermosetting resin or injection molding using a thermoplastic resin is performed. A gate (not shown) is provided in the vicinity of the suspension lead 43.

図6(B)を参照して、上述したモールド工程が終了した後に、吊りリード43およびリード25をリードフレーム40から分離する。具体的には、接続部42が設けられた箇所にて、吊りリード43を外枠41から分離する。接続部42は幅が細く形成されているので、封止樹脂14を押圧することにより、吊りリード43を容易に外枠41から分離することができる。更に、タイバー44が設けられた箇所にてリード25を分離し、図1に示すような混成集積回路装置10をリードフレーム40から分離する。   With reference to FIG. 6B, after the above-described molding process is completed, the suspension lead 43 and the lead 25 are separated from the lead frame 40. Specifically, the suspension lead 43 is separated from the outer frame 41 at a place where the connection portion 42 is provided. Since the connecting portion 42 is formed with a narrow width, the suspension lead 43 can be easily separated from the outer frame 41 by pressing the sealing resin 14. Further, the lead 25 is separated at the place where the tie bar 44 is provided, and the hybrid integrated circuit device 10 as shown in FIG. 1 is separated from the lead frame 40.

本発明の回路装置を示す図であり、(A)は斜視図であり、(B)は断面図であり、(C)は断面図である。It is a figure which shows the circuit apparatus of this invention, (A) is a perspective view, (B) is sectional drawing, (C) is sectional drawing. 本発明の回路装置を示す断面図である。It is sectional drawing which shows the circuit apparatus of this invention. 本発明の回路装置の製造方法を示す図であり、(A)−(D)は断面図である。It is a figure which shows the manufacturing method of the circuit apparatus of this invention, (A)-(D) is sectional drawing. 本発明の回路装置の製造方法を示す図であり、(A)−(C)は断面図である。It is a figure which shows the manufacturing method of the circuit apparatus of this invention, (A)-(C) is sectional drawing. 本発明の回路装置の製造方法を示す図であり、(A)は平面図であり、(B)は断面図であり、(C)は断面図である。It is a figure which shows the manufacturing method of the circuit apparatus of this invention, (A) is a top view, (B) is sectional drawing, (C) is sectional drawing. 本発明の回路装置の製造方法を示す図であり、(A)は断面図であり、(B)は平面図である。It is a figure which shows the manufacturing method of the circuit apparatus of this invention, (A) is sectional drawing, (B) is a top view. 従来の混成集積回路装置を示す図であり、(A)および(B)は断面図である。It is a figure which shows the conventional hybrid integrated circuit device, (A) And (B) is sectional drawing.

符号の説明Explanation of symbols

10 混成集積回路装置
11 回路基板
12 絶縁層
13 導電パターン
13A パッド
14 封止樹脂
15A 半導体素子
15B チップ素子
17 金属細線
18 溝部
20 接合材
21 金属基板
22A 上金型
22B 下金型
23 キャビティ
25 リード
26 エッチングマスク
27 上金型
28 下金型
32 バリ
40 リードフレーム
41 外枠
42 接続部
43 吊りリード
44 タイバー
45 ランド
46 ユニット


DESCRIPTION OF SYMBOLS 10 Hybrid integrated circuit device 11 Circuit board 12 Insulating layer 13 Conductive pattern 13A Pad 14 Sealing resin 15A Semiconductor element 15B Chip element 17 Metal fine wire 18 Groove 20 Bonding material 21 Metal substrate 22A Upper mold 22B Lower mold 23 Cavity 25 Lead 26 Etching mask 27 Upper die 28 Lower die 32 Burr 40 Lead frame 41 Outer frame 42 Connection portion 43 Hanging lead 44 Tie bar 45 Land 46 Unit


Claims (7)

金属から成る回路基板と、
前記回路基板の表面を被覆する絶縁層と、
前記絶縁層の表面に形成された導電パターンと、
前記導電パターンに電気的に接続された回路素子とを具備し、
前記回路基板の周辺部に、前記回路基板の表面を窪ませた溝部を設けることを特徴とする回路装置。
A circuit board made of metal,
An insulating layer covering the surface of the circuit board;
A conductive pattern formed on the surface of the insulating layer;
A circuit element electrically connected to the conductive pattern,
A circuit device, wherein a groove portion in which a surface of the circuit board is recessed is provided in a peripheral portion of the circuit board.
前記絶縁層は、フィラーが含有された樹脂から成ることを特徴とする請求項1記載の回路装置。   The circuit device according to claim 1, wherein the insulating layer is made of a resin containing a filler. 前記溝部を、前記回路基板の周辺部全域に設けることを特徴とする請求項1記載の回路装置。   The circuit device according to claim 1, wherein the groove is provided in the entire peripheral portion of the circuit board. 前記回路基板は、打ち抜き加工により加工されることを特徴とする請求項1記載の回路装置。   The circuit device according to claim 1, wherein the circuit board is processed by punching. 金属基板の主面を部分的に窪ませて溝部を形成する工程と、
前記溝部も含めた前記金属基板の主面を絶縁層により被覆する工程と、
前記溝部が設けられた箇所で前記金属基板を個別の回路基板に分割する工程と、
前記回路基板の表面に導電パターンおよび回路素子から成る電気回路を形成する工程とを具備することを特徴とする回路装置の製造方法。
Forming a groove by partially denting the main surface of the metal substrate;
Covering the main surface of the metal substrate including the groove with an insulating layer;
Dividing the metal substrate into individual circuit boards at the locations where the grooves are provided; and
And a step of forming an electric circuit comprising a conductive pattern and a circuit element on the surface of the circuit board.
前記溝部は、前記金属基板をエッチングすることにより設けられることを特徴とする請求項5記載の回路装置の製造方法。   6. The method of manufacturing a circuit device according to claim 5, wherein the groove is provided by etching the metal substrate. 打ち抜き加工により、前記金属基板を分割することを特徴とする請求項5記載の回路装置の製造方法。
6. The method of manufacturing a circuit device according to claim 5, wherein the metal substrate is divided by punching.
JP2005218722A 2005-07-28 2005-07-28 Circuit device manufacturing method Expired - Fee Related JP4845090B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013247200A (en) * 2012-05-24 2013-12-09 Nhk Spring Co Ltd Edge formation method of metal base circuit board, and metal base circuit board
US9397017B2 (en) 2014-11-06 2016-07-19 Semiconductor Components Industries, Llc Substrate structures and methods of manufacture
US9408301B2 (en) 2014-11-06 2016-08-02 Semiconductor Components Industries, Llc Substrate structures and methods of manufacture
DE102016209903A1 (en) 2015-06-11 2016-12-15 Aikokiki Manufacturing Co., Ltd. Printed circuit board and electronic device
US11437304B2 (en) 2014-11-06 2022-09-06 Semiconductor Components Industries, Llc Substrate structures and methods of manufacture

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104952856B (en) * 2015-06-27 2018-04-13 华东光电集成器件研究所 A kind of double bamboo plywood integrated circuit
KR102528424B1 (en) 2016-08-31 2023-05-04 삼성전자주식회사 Electric component and electronic device with the same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6150350A (en) * 1984-08-18 1986-03-12 Nichicon Capacitor Ltd Hybrid integrated circuit substrate
JPH08307053A (en) * 1995-04-28 1996-11-22 Matsushita Electric Works Ltd Manufacture of metal core printed wiring board
JPH09289263A (en) * 1996-04-19 1997-11-04 Mitsubishi Plastics Ind Ltd Manufacture of metal core substrate for ic package
JP2000133913A (en) * 1998-10-28 2000-05-12 Ngk Spark Plug Co Ltd Manufacture of printed wiring board and metal plate
JP2001053402A (en) * 1999-08-06 2001-02-23 Sanyo Electric Co Ltd Hybrid integrated circuit device and manufacture thereof
JP2005005730A (en) * 2004-08-13 2005-01-06 Sanyo Electric Co Ltd Manufacturing method for circuit arrangement
JP2005123606A (en) * 2003-09-25 2005-05-12 Sanyo Electric Co Ltd Hybrid integrated circuit device and manufacturing method therefor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6150350A (en) * 1984-08-18 1986-03-12 Nichicon Capacitor Ltd Hybrid integrated circuit substrate
JPH08307053A (en) * 1995-04-28 1996-11-22 Matsushita Electric Works Ltd Manufacture of metal core printed wiring board
JPH09289263A (en) * 1996-04-19 1997-11-04 Mitsubishi Plastics Ind Ltd Manufacture of metal core substrate for ic package
JP2000133913A (en) * 1998-10-28 2000-05-12 Ngk Spark Plug Co Ltd Manufacture of printed wiring board and metal plate
JP2001053402A (en) * 1999-08-06 2001-02-23 Sanyo Electric Co Ltd Hybrid integrated circuit device and manufacture thereof
JP2005123606A (en) * 2003-09-25 2005-05-12 Sanyo Electric Co Ltd Hybrid integrated circuit device and manufacturing method therefor
JP2005005730A (en) * 2004-08-13 2005-01-06 Sanyo Electric Co Ltd Manufacturing method for circuit arrangement

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013247200A (en) * 2012-05-24 2013-12-09 Nhk Spring Co Ltd Edge formation method of metal base circuit board, and metal base circuit board
US9397017B2 (en) 2014-11-06 2016-07-19 Semiconductor Components Industries, Llc Substrate structures and methods of manufacture
US9408301B2 (en) 2014-11-06 2016-08-02 Semiconductor Components Industries, Llc Substrate structures and methods of manufacture
US9883595B2 (en) 2014-11-06 2018-01-30 Semiconductor Components Industries, Llc Substrate structures and methods of manufacture
US11419217B2 (en) 2014-11-06 2022-08-16 Semiconductor Components Industries, Llc Substrate structures and methods of manufacture
US11437304B2 (en) 2014-11-06 2022-09-06 Semiconductor Components Industries, Llc Substrate structures and methods of manufacture
DE102016209903A1 (en) 2015-06-11 2016-12-15 Aikokiki Manufacturing Co., Ltd. Printed circuit board and electronic device
US9769916B2 (en) 2015-06-11 2017-09-19 Omron Automotive Electronics Co., Ltd. Printed circuit board and electronic device

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