JP2009141156A - Semiconductor device, and manufacturing method thereof - Google Patents

Semiconductor device, and manufacturing method thereof Download PDF

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JP2009141156A
JP2009141156A JP2007316472A JP2007316472A JP2009141156A JP 2009141156 A JP2009141156 A JP 2009141156A JP 2007316472 A JP2007316472 A JP 2007316472A JP 2007316472 A JP2007316472 A JP 2007316472A JP 2009141156 A JP2009141156 A JP 2009141156A
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metal plate
metal
wall
semiconductor device
semiconductor element
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Tamami Kobayashi
玉実 小林
Takuma Hondo
拓磨 本藤
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Panasonic Corp
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Panasonic Corp
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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
    • H01L2224/42Wire 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
    • H01L2224/48095Kinked
    • 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
    • H01L2224/48245Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
    • H01L2224/48247Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
    • 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
    • H01L2224/484Connecting portions
    • H01L2224/48463Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond
    • H01L2224/48465Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch
    • 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
    • H01L2924/15Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/181Encapsulation

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a semiconductor device and a manufacturing method thereof, capable of avoiding generation of a resin burr on a metal plate exposure part of a metal plate-exposed semiconductor device, in a sealing process of a semiconductor element. <P>SOLUTION: The semiconductor element 2 is mounted on one main surface of a metal plate 1. A plurality of metal leads 5 are arranged on the periphery of the metal plate 1. An electrode pad 3 of the semiconductor element 2 and the plurality of metal leads 5 are electrically connected by a metal thin line 4. The metal plate 1 is formed with a projection part T1 that is a projecting central part of an opposite main surface of a surface mounted with the semiconductor element 2 and a wall 7 in a part except the central part of the metal plate 1 for surrounding the projection part T1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、放熱性を考慮して金属板の半導体素子搭載部を露出させた構造を有する半導体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 semiconductor device having a structure in which a semiconductor element mounting portion of a metal plate is exposed in consideration of heat dissipation, and a manufacturing method thereof.

従来から、半導体装置として、動作時の放熱性を考慮して、金属板(例えば、リードフレーム)の半導体素子搭載部の一部を、装置を覆う絶縁性樹脂から露出させた構造を有する半導体装置が多く使用されている。   Conventionally, a semiconductor device having a structure in which a part of a semiconductor element mounting portion of a metal plate (for example, a lead frame) is exposed from an insulating resin covering the device in consideration of heat dissipation during operation as a semiconductor device Is often used.

この種の半導体装置は、半導体素子と、半導体素子搭載部およびリード部を有する金属板と、半導体素子とリード部を電気的に接続する金属細線と、半導体素子と金属板からなる半導体素子搭載部およびリード部と金属細線とを、金属板の半導体素子搭載面の反対側主面の中央部分が露出するように覆う絶縁性樹脂とを備えて構成される。   This type of semiconductor device includes a semiconductor element, a metal plate having a semiconductor element mounting portion and a lead portion, a metal thin wire electrically connecting the semiconductor element and the lead portion, and a semiconductor element mounting portion comprising the semiconductor element and the metal plate. And an insulating resin that covers the lead portion and the fine metal wire so that the central portion of the main surface opposite to the semiconductor element mounting surface of the metal plate is exposed.

また、半導体装置では、動作時に半導体素子が発熱するため、半導体装置の熱容量が問題視される。このような半導体素子の熱を効果的に半導体装置外部へ逃がす方法の一つに、金属板からなる半導体素子搭載部の一部を絶縁性樹脂外部へ露出させることがある。   Further, in the semiconductor device, the semiconductor element generates heat during operation, and thus the heat capacity of the semiconductor device is regarded as a problem. One method for effectively releasing the heat of the semiconductor element to the outside of the semiconductor device is to expose a part of the semiconductor element mounting portion made of a metal plate to the outside of the insulating resin.

このように半導体装置の絶縁性樹脂から露出した半導体素子搭載部の露出部は、外気に触れる又は半導体装置の実装基板上に形成された熱伝導性の良い金属パターンに接触するため、半導体素子で発生した熱は金属板からなる半導体素子搭載部を介して装置外部へ放出される。   In this way, the exposed portion of the semiconductor element mounting portion exposed from the insulating resin of the semiconductor device is exposed to the outside air or is in contact with a metal pattern having good thermal conductivity formed on the mounting substrate of the semiconductor device. The generated heat is released to the outside of the apparatus through a semiconductor element mounting portion made of a metal plate.

従来の金属板露出型半導体装置の断面概略図を図9に示し、従来の金属板露出型半導体装置の製造方法における樹脂注入時の断面概略図を図10に示した。
金属板露出型半導体装置では、放熱性の向上を目的として、図9のように、半導体素子搭載部を形成する金属板1の突出部T1部分における一部を絶縁性樹脂6から外部に露出させて露出部R1を形成するため、図10のように、絶縁性樹脂6の注入時に、金属板1の露出部R1と封止金型8を接触させる。
FIG. 9 shows a schematic cross-sectional view of a conventional metal plate exposed semiconductor device, and FIG. 10 shows a schematic cross-sectional view at the time of resin injection in the conventional method of manufacturing a metal plate exposed semiconductor device.
In the metal plate exposed semiconductor device, for the purpose of improving heat dissipation, as shown in FIG. 9, a part of the protruding portion T1 portion of the metal plate 1 forming the semiconductor element mounting portion is exposed from the insulating resin 6 to the outside. In order to form the exposed portion R1, the exposed portion R1 of the metal plate 1 and the sealing mold 8 are brought into contact with each other when the insulating resin 6 is injected as shown in FIG.

このとき、金属板1の露出部R1と封止金型8との接触面に間隙S1が生じる場合があり、そのような場合には、間隙S1に絶縁性樹脂6が流れ込むことにより、図9のように、金属板1の露出部R1に樹脂バリ11を形成する。   At this time, a gap S1 may be formed on the contact surface between the exposed portion R1 of the metal plate 1 and the sealing mold 8. In such a case, the insulating resin 6 flows into the gap S1, and FIG. As described above, the resin burr 11 is formed on the exposed portion R1 of the metal plate 1.

そのため、この種の半導体装置では、金属板1の露出部R1に発生した樹脂バリ11を除去することが重要な要素の一つとなっている。
以上のような金属板1の突出部T1部分における露出部R1と封止金型8との接触面への絶縁性樹脂6の流れ込みを防止する従来技術(例えば、特許文献1を参照)について、以下に説明する。
Therefore, in this type of semiconductor device, removing the resin burr 11 generated in the exposed portion R1 of the metal plate 1 is one of the important elements.
About the prior art (for example, refer patent document 1) which prevents the flow of the insulating resin 6 to the contact surface of the exposed part R1 and the sealing die 8 in the protrusion part T1 part of the metal plate 1 as described above, This will be described below.

この半導体装置は、金属板1の露出部R1側の封止金型8との接触部分にテーパー部を設けるとともに、封止金型8側に凹部を設け、金属板1の露出部R1側のテーパー部と封止金型8側の凹部を干渉させることにより、金属板1の露出部R1への絶縁性樹脂6の流れ込みを阻止するものである。
特開2001−35868号公報
In this semiconductor device, a taper portion is provided at a contact portion with the sealing mold 8 on the exposed portion R1 side of the metal plate 1, and a concave portion is provided on the sealing die 8 side, so that the exposed portion R1 side of the metal plate 1 is disposed on the exposed portion R1 side. By causing the taper portion and the concave portion on the sealing mold 8 side to interfere with each other, the insulative resin 6 is prevented from flowing into the exposed portion R1 of the metal plate 1.
JP 2001-35868 A

しかしながら上述した従来の半導体装置およびその製造方法では、金属板1の露出部R1側のテーパー部と封止金型8側の凹部との干渉具合によっては、金属板1の露出部R1への絶縁性樹脂6の流れ込みを阻止できない場合がある。   However, in the conventional semiconductor device and the manufacturing method thereof described above, the insulation between the exposed portion R1 of the metal plate 1 and the tapered portion on the exposed portion R1 side of the metal plate 1 and the recessed portion on the sealing mold 8 side depends on the degree of interference. In some cases, the flow of the conductive resin 6 cannot be prevented.

その結果、金属板露出型半導体装置において、金属板1の露出部R1に発生した樹脂バリ11は、放熱性の低下、外観品質の低下、実装基板への接続性の阻害といった問題が発生する。   As a result, in the metal plate exposed semiconductor device, the resin burr 11 generated in the exposed portion R1 of the metal plate 1 causes problems such as a decrease in heat dissipation, a decrease in appearance quality, and an impediment to connectivity to the mounting substrate.

そのため、この半導体装置では、装置温度が上昇し、その温度上昇により誤作動を生じる可能性があり、この半導体装置を搭載したPDP−TV、液晶TV、有機ELパネルを使用した製品、カーオーディオ機器、ゲーム機、携帯電話などのシステム全体を誤作動させたり、停止させたり、最悪の場合には発火させたりして火災事故を起こす可能性がある。   Therefore, in this semiconductor device, there is a possibility that the device temperature will rise and malfunction may occur due to the temperature rise. Products using this semiconductor device, PDP-TVs, liquid crystal TVs, organic EL panels, car audio equipment In addition, there is a possibility of causing a fire accident by causing the entire system such as a game machine or a mobile phone to malfunction, stop, or ignite in the worst case.

本発明は、上記従来の問題点を解決するもので、樹脂バリによる半導体装置の放熱性の低下、外観品質の低下、実装基板への接続性の阻害などの問題を解消することができるとともに、半導体装置の温度上昇による誤作動、半導体装置を搭載したシステム全体の誤作動・停止、火災事故発生の可能性を低減することができる半導体装置およびその製造方法を提供する。   The present invention solves the above-mentioned conventional problems, and can solve problems such as a decrease in heat dissipation of a semiconductor device due to resin burrs, a decrease in appearance quality, and a hindrance to connectivity to a mounting board. Provided are a semiconductor device and a manufacturing method thereof that can reduce the possibility of malfunction due to temperature rise of the semiconductor device, malfunction / stop of the entire system including the semiconductor device, and occurrence of a fire accident.

上記の課題を解決するために、本発明の請求項1に記載の半導体装置は、板状体で一主面上に半導体素子を搭載した金属板と、前記金属板の周辺に配置した複数の金属リードと、前記半導体素子の電極パッドと前記複数の金属リードを電気接続する金属細線とを備え、前記金属板における前記半導体素子の搭載面とは反対側の主面中央部分に突出した突出部を形成し、前記金属板における前記半導体素子の搭載面とは反対側の主面中央部分以外の部分に前記突出部を囲むように形成した壁を配置し、前記壁で囲まれた前記突出部を露出するように、前記金属板と前記複数の金属リードと前記半導体素子と前記金属細線を覆う絶縁性樹脂を形成したことを特徴とする。   In order to solve the above-described problem, a semiconductor device according to claim 1 of the present invention is a plate-like body in which a semiconductor element is mounted on one main surface, and a plurality of plates arranged around the metal plate. A metal lead, an electrode pad of the semiconductor element, and a metal fine wire for electrically connecting the plurality of metal leads, and a protruding portion protruding from a central portion of the main surface of the metal plate opposite to the mounting surface of the semiconductor element And a wall formed so as to surround the protruding portion in a portion other than the central portion of the main surface opposite to the mounting surface of the semiconductor element in the metal plate, and the protruding portion surrounded by the wall An insulating resin is formed to cover the metal plate, the plurality of metal leads, the semiconductor element, and the fine metal wires so as to expose the metal plate.

また、本発明の請求項2に記載の半導体装置は、請求項1に記載の半導体装置であって、前記壁を前記突出部から離して配置することにより、前記壁と前記突出部との間に溝を形成したことを特徴とする。   A semiconductor device according to a second aspect of the present invention is the semiconductor device according to the first aspect, wherein the wall is disposed apart from the projecting portion so that the wall is disposed between the projecting portion and the wall. It is characterized in that a groove is formed.

また、本発明の請求項3に記載の半導体装置は、請求項1に記載の半導体装置であって、前記壁は、前記突出部に接触するように配置したことを特徴とする。
また、本発明の請求項4に記載の半導体装置は、請求項1から請求項3のいずれかに記載の半導体装置であって、前記壁は、前記金属板と材質が異なることを特徴とする。
A semiconductor device according to a third aspect of the present invention is the semiconductor device according to the first aspect, wherein the wall is disposed so as to contact the protruding portion.
A semiconductor device according to a fourth aspect of the present invention is the semiconductor device according to any one of the first to third aspects, wherein the wall is made of a material different from that of the metal plate. .

また、本発明の請求項5に記載の半導体装置は、請求項1から請求項4のいずれかに記載の半導体装置であって、前記壁は、前記絶縁性樹脂と異なる樹脂材料よりなることを特徴とする。   A semiconductor device according to claim 5 of the present invention is the semiconductor device according to any one of claims 1 to 4, wherein the wall is made of a resin material different from the insulating resin. Features.

また、本発明の請求項6に記載の半導体装置は、板状体で一主面上に半導体素子を搭載した金属板と、前記金属板の周辺に配置した複数の金属リードと、前記半導体素子の電極パッドと前記複数の金属リードを電気接続する金属細線とを備え、前記金属板における前記半導体素子の搭載面とは反対側の主面中央部分に突出した突出部を形成し、前記突出部を露出するように、前記金属板と前記複数の金属リードと前記半導体素子と前記金属細線を覆う絶縁性樹脂を形成し、前記絶縁性樹脂の形成時に、前記突出部の露出部分への前記絶縁性樹脂の流入を阻止するために一時的に前記突出部を囲むように配置された壁を、前記絶縁性樹脂の形成終了後時に除去したことで、前記突出部と前記絶縁性樹脂との間に形成された溝を有することを特徴とする。   According to a sixth aspect of the present invention, there is provided a semiconductor device having a plate-like body on which a semiconductor element is mounted on one main surface, a plurality of metal leads arranged around the metal plate, and the semiconductor element. An electrode pad and a thin metal wire that electrically connects the plurality of metal leads, and a protruding portion protruding from a central portion of the main surface of the metal plate opposite to the mounting surface of the semiconductor element is formed. Forming an insulating resin that covers the metal plate, the plurality of metal leads, the semiconductor element, and the thin metal wire so as to expose the insulating plate to the exposed portion of the protruding portion when the insulating resin is formed. In order to prevent the inflow of the conductive resin, the wall temporarily disposed so as to surround the protruding portion is removed after the formation of the insulating resin, so that the gap between the protruding portion and the insulating resin is removed. It has a groove formed in To.

また、本発明の請求項7に記載の半導体装置の製造方法は、金属基板を構成する板状体で一主面上の中央部分に突出した突出部が形成された金属板の前記突出部の形成面で中央部分以外の部分に、前記突出部を囲むように壁を形成して配置する工程と、前記金属板の前記突出部の形成面とは反対側の主面上に半導体素子を搭載する工程と、前記半導体素子の電極パッドと前記金属板の周辺に配置された金属基板を構成する複数の金属リードを金属細線で電気接続する工程と、前記壁で囲まれた前記突出部を露出するように、前記金属板と前記複数の金属リードと前記半導体素子と前記金属細線を、絶縁性樹脂で覆って樹脂封止する工程とを有することを特徴とする。   According to a seventh aspect of the present invention, there is provided a method for manufacturing a semiconductor device, comprising: a plate-like body constituting a metal substrate; A step of forming and arranging a wall so as to surround the protruding portion at a portion other than the central portion on the forming surface, and mounting a semiconductor element on the main surface opposite to the forming surface of the protruding portion of the metal plate A step of electrically connecting a plurality of metal leads constituting a metal substrate disposed around the electrode pad of the semiconductor element and the metal plate with a fine metal wire, and exposing the protruding portion surrounded by the wall As described above, the method includes a step of covering and sealing the metal plate, the plurality of metal leads, the semiconductor element, and the metal thin wire with an insulating resin.

また、本発明の請求項8に記載の半導体装置の製造方法は、金属基板を構成する板状体で一主面上の中央部分に突出した突出部が形成された金属板の前記突出部の形成面で中央部分以外の部分に、前記突出部を囲むように壁を形成して配置する工程と、前記金属板の前記突出部の形成面とは反対側の主面上に半導体素子を搭載する工程と、前記半導体素子の電極パッドと前記金属板の周辺に配置された金属基板を構成する複数の金属リードを金属細線で電気接続する工程と、前記壁で囲まれた前記突出部を露出するように、前記金属板と前記複数の金属リードと前記半導体素子と前記金属細線を、絶縁性樹脂で覆って樹脂封止する工程と、前記壁を除去する工程とを有することを特徴とする。   According to another aspect of the present invention, there is provided a method for manufacturing a semiconductor device, comprising: a plate-like body that constitutes a metal substrate; and a protrusion that protrudes from a central portion on one main surface. A step of forming and arranging a wall so as to surround the protruding portion at a portion other than the central portion on the forming surface, and mounting a semiconductor element on the main surface opposite to the forming surface of the protruding portion of the metal plate A step of electrically connecting a plurality of metal leads constituting a metal substrate disposed around the electrode pad of the semiconductor element and the metal plate with a fine metal wire, and exposing the protruding portion surrounded by the wall The metal plate, the plurality of metal leads, the semiconductor element, and the thin metal wire are covered with an insulating resin and sealed, and the wall is removed. .

また、本発明の請求項9に記載の半導体装置の製造方法は、請求項7または請求項8に記載の半導体装置の製造方法であって、前記壁は、前記絶縁性樹脂により前記樹脂封止する工程より先に形成することを特徴とする。   The method for manufacturing a semiconductor device according to claim 9 of the present invention is the method for manufacturing a semiconductor device according to claim 7 or 8, wherein the wall is sealed with the resin by the insulating resin. It forms before the process to perform.

また、本発明の請求項10に記載の半導体装置の製造方法は、請求項7から請求項9のいずれかに記載の半導体装置の製造方法であって、前記壁を前記突出部から離して配置することにより、前記壁と前記突出部との間に溝を形成することを特徴とする。   A method for manufacturing a semiconductor device according to a tenth aspect of the present invention is the method for manufacturing a semiconductor device according to any one of the seventh to ninth aspects, wherein the wall is disposed away from the protruding portion. By doing so, a groove is formed between the wall and the protrusion.

また、本発明の請求項11に記載の半導体装置の製造方法は、請求項7から請求項9のいずれかに記載の半導体装置の製造方法であって、前記壁は、前記突出部に接触するように配置することを特徴とする。   A semiconductor device manufacturing method according to an eleventh aspect of the present invention is the semiconductor device manufacturing method according to any one of the seventh to ninth aspects, wherein the wall is in contact with the protruding portion. It arrange | positions like this.

また、本発明の請求項12に記載の半導体装置の製造方法は、請求項7から請求項11のいずれかに記載の半導体装置の製造方法であって、前記壁は、前記金属板と材質が異なる材料で形成することを特徴とする。   A semiconductor device manufacturing method according to claim 12 of the present invention is the semiconductor device manufacturing method according to any one of claims 7 to 11, wherein the wall is made of the metal plate and the material. It is formed by using different materials.

また、本発明の請求項13に記載の半導体装置の製造方法は、請求項7から請求項12のいずれかに記載の半導体装置の製造方法であって、前記壁は、前記絶縁性樹脂と異なる樹脂材料で形成することを特徴とする。   A semiconductor device manufacturing method according to a thirteenth aspect of the present invention is the semiconductor device manufacturing method according to any one of the seventh to twelfth aspects, wherein the wall is different from the insulating resin. It is formed of a resin material.

以上により、絶縁性樹脂を形成する工程より先に金属板の中央部以外の部分に突出部を囲むように壁部を形成することにより、絶縁性樹脂の形成時に壁部と封止金型が接触し、金属板と封止金型との空間を埋めるため、金属板の突出部部分における露出部への絶縁性樹脂の流れ込みを回避して樹脂バリの発生を防止した製造方法により、樹脂バリを除去する工程を省略することが可能となる。   As described above, the wall portion and the sealing mold are formed at the time of forming the insulating resin by forming the wall portion so as to surround the protruding portion in the portion other than the central portion of the metal plate prior to the step of forming the insulating resin. In order to fill the space between the metal plate and the sealing mold in contact with each other, the resin burrs are produced by a manufacturing method that prevents the generation of resin burrs by avoiding the flow of insulating resin into the exposed portions of the protruding portions of the metal plates. It is possible to omit the step of removing.

また、金属板露出型半導体装置において、金属板の素子搭載面の反対側主面の中央部以外の部分に突出部を囲むように壁部を形成することにより、金属板の露出部での樹脂バリの発生を回避することができる。   Further, in the metal plate exposure type semiconductor device, the resin at the exposed portion of the metal plate is formed by forming a wall portion so as to surround the protruding portion at a portion other than the central portion of the main surface opposite to the element mounting surface of the metal plate. Generation of burrs can be avoided.

以上のように本発明によれば、金属板の突出部の周囲に壁を設けることにより、絶縁性樹脂注入時に金属板の突出部における露出部への絶縁性樹脂の流れ込みを回避し、金属板における露出部での樹脂バリの発生を防止することができる。   As described above, according to the present invention, by providing a wall around the protruding portion of the metal plate, the insulative resin can be prevented from flowing into the exposed portion of the protruding portion of the metal plate at the time of injecting the insulating resin. It is possible to prevent the occurrence of resin burrs at the exposed portion.

また、上記のような樹脂バリの発生を防止することにより、樹脂封止後の樹脂バリを除去する工程を省略することができる。
その結果、樹脂バリによる半導体装置の放熱性の低下、外観品質の低下、実装基板への接続性の阻害などの問題を、確実に解消することができるとともに、半導体装置の温度上昇による誤作動、半導体装置を搭載したシステム全体の誤作動・停止、火災事故発生の可能性を低減することができる。
Moreover, the process of removing the resin burr after resin sealing can be omitted by preventing the occurrence of the resin burr as described above.
As a result, problems such as degradation of heat dissipation of semiconductor devices due to resin burrs, deterioration of appearance quality, obstruction of connectivity to the mounting board can be reliably solved, and malfunction due to temperature rise of semiconductor devices, It is possible to reduce the possibility of a malfunction or stop of the entire system equipped with semiconductor devices and the occurrence of a fire accident.

以下、本発明の実施の形態を示す半導体装置およびその製造方法について、図面を参照しながら具体的に説明する。
(実施の形態1)
本実施の形態1の金属板露出型半導体装置の構成を図1に示した。図1(a)は半導体装置下面側の概略図、図1(b)は図1(a)をA−A’方向に切断した断面概略図である。
Hereinafter, a semiconductor device and a manufacturing method thereof according to an embodiment of the present invention will be specifically described with reference to the drawings.
(Embodiment 1)
The configuration of the metal plate exposed semiconductor device according to the first embodiment is shown in FIG. FIG. 1A is a schematic view of the lower surface side of the semiconductor device, and FIG. 1B is a schematic cross-sectional view of FIG. 1A cut in the AA ′ direction.

本実施の形態の金属板露出型半導体装置の全体構成は、図1に示すように、金属板1、半導体素子2、電極パッド3、金属細線4、金属リード5、絶縁性樹脂6、壁7より構成され、図1(b)のように、金属板1の半導体素子2を搭載した面の反対側の主面中央部分に突出した突出部T1を設け、金属板1の中央部以外の部分に突出部T1を囲むように壁7を設けている。   As shown in FIG. 1, the overall structure of the exposed metal plate semiconductor device of the present embodiment is as follows: metal plate 1, semiconductor element 2, electrode pad 3, metal wire 4, metal lead 5, insulating resin 6, wall 7. As shown in FIG. 1 (b), a protruding portion T 1 protruding from the central portion of the main surface opposite to the surface on which the semiconductor element 2 of the metal plate 1 is mounted is provided, and a portion other than the central portion of the metal plate 1 A wall 7 is provided so as to surround the protruding portion T1.

また、金属板1の中央部以外の部分に突出部T1を囲むように形成した壁7は、図1(b)のように、突出部T1と壁7が非接触のため、突出部T1と壁7との間に溝9が形成される。
(実施の形態2)
本実施の形態2の金属板露出型半導体装置の構成を図2に示した。図2(a)は半導体装置下面側の概略図、図2(b)は図2(a)をB−B方向に切断した断面概略図である。
Further, the wall 7 formed so as to surround the protruding portion T1 in a portion other than the central portion of the metal plate 1 is not in contact with the protruding portion T1 because the protruding portion T1 and the wall 7 are not in contact with each other as shown in FIG. A groove 9 is formed between the wall 7.
(Embodiment 2)
The configuration of the metal plate exposed semiconductor device according to the second embodiment is shown in FIG. 2A is a schematic view of the lower surface side of the semiconductor device, and FIG. 2B is a schematic cross-sectional view of FIG. 2A cut in the BB direction.

本実施の形態の金属板露出型半導体装置の全体構成は、図2に示すように、金属板1、半導体素子2、電極パッド3、金属細線4、金属リード5、絶縁性樹脂6、壁7より構成され、図2(b)のように、金属板1の半導体素子2を搭載した面の反対側の主面中央部分に突出した突出部T1を設け、金属板1の中央部以外の部分に突出部T1を囲むように壁7を設けている。   As shown in FIG. 2, the overall configuration of the exposed metal plate semiconductor device of the present embodiment is as follows: metal plate 1, semiconductor element 2, electrode pad 3, metal wire 4, metal lead 5, insulating resin 6, wall 7. As shown in FIG. 2 (b), a protruding portion T 1 protruding from the central portion of the main surface opposite to the surface on which the semiconductor element 2 of the metal plate 1 is mounted is provided, and a portion other than the central portion of the metal plate 1 A wall 7 is provided so as to surround the protruding portion T1.

また、金属板1の中央部以外の部分に突出部T1を囲むように形成した壁7は、図2(b)のように、突出部T1と壁7が接触する構造になるように配置されている。この場合、突出部T1と壁7との間には図1のような溝9は形成されない。
(実施の形態3)
図4は本実施の形態3の金属板露出型半導体装置の構成を示す断面概略図である。
Further, the wall 7 formed so as to surround the protruding portion T1 in a portion other than the central portion of the metal plate 1 is arranged so that the protruding portion T1 and the wall 7 are in contact with each other as shown in FIG. ing. In this case, the groove 9 as shown in FIG. 1 is not formed between the protruding portion T1 and the wall 7.
(Embodiment 3)
FIG. 4 is a schematic cross-sectional view showing the configuration of the metal plate exposed semiconductor device according to the third embodiment.

本実施の形態の金属板露出型半導体装置の全体構成は、図4に示すように、金属板1、半導体素子2、電極パッド3、金属細線4、片面(上面)が金属細線4との接続領域となり金属細線4との接続領域と反対の面が外部端子の役割を担う複数の金属リード5、絶縁性樹脂6、壁7より構成され、金属板1の半導体素子2を搭載した面の反対側の主面中央部分に突出した突出部T1を設け、金属板1の中央部以外の部分に突出部T1を囲むように壁7を突出部T1と非接触となるように設けている。   As shown in FIG. 4, the overall configuration of the exposed metal plate semiconductor device of the present embodiment includes a metal plate 1, a semiconductor element 2, an electrode pad 3, a fine metal wire 4, and one surface (upper surface) connected to the fine metal wire 4. The area opposite to the area where the metal thin wire 4 is connected is composed of a plurality of metal leads 5, insulating resin 6, and walls 7 that serve as external terminals, and is opposite to the surface on which the semiconductor element 2 of the metal plate 1 is mounted. A protruding portion T1 protruding at the central portion of the main surface on the side is provided, and the wall 7 is provided in a portion other than the central portion of the metal plate 1 so as to be in contact with the protruding portion T1 so as to surround the protruding portion T1.

また、金属板1の中央部以外の部分に突出部T1を囲むように形成した壁7は、図4のように、突出部T1と壁7が非接触のため、突出部T1と壁7との間に溝9が形成される。
(実施の形態4)
図5は本実施の形態4の金属板露出型半導体装置の構成を示す断面概略図である。
Further, the wall 7 formed so as to surround the protruding portion T1 in a portion other than the central portion of the metal plate 1 is not in contact with the protruding portion T1 and the wall 7 as shown in FIG. A groove 9 is formed between the two.
(Embodiment 4)
FIG. 5 is a schematic cross-sectional view showing the configuration of the exposed metal plate semiconductor device of the fourth embodiment.

本実施の形態の金属板露出型半導体装置の全体構成は、図5に示すように、金属板1、半導体素子2、電極パッド3、金属細線4、片面(上面)が金属細線4との接続領域となり金属細線4との接続領域と反対の面が外部端子の役割を担う複数の金属リード5、絶縁性樹脂6、壁7より構成され、金属板1の半導体素子2を搭載した面の反対側の主面中央部分に突出した突出部T1を設け、金属板1の中央部以外の部分に突出部T1を囲むように壁7を突出部T1と接触するように設けている。   As shown in FIG. 5, the overall configuration of the exposed metal plate semiconductor device of the present embodiment includes a metal plate 1, a semiconductor element 2, an electrode pad 3, a fine metal wire 4, and one surface (upper surface) connected to the fine metal wire 4. The area opposite to the area where the metal thin wire 4 is connected is composed of a plurality of metal leads 5, insulating resin 6, and walls 7 that serve as external terminals, and is opposite to the surface on which the semiconductor element 2 of the metal plate 1 is mounted. A protruding portion T1 protruding at the center portion of the main surface on the side is provided, and a wall 7 is provided in a portion other than the central portion of the metal plate 1 so as to surround the protruding portion T1 so as to contact the protruding portion T1.

また、金属板1の中央部以外の部分に突出部T1を囲むように形成した壁7は、図5のように、突出部T1と壁7が接触する構造になるように配置されているため、突出部T1と壁7との間には図4のような溝9は形成されない。   Further, the wall 7 formed so as to surround the protruding portion T1 in a portion other than the central portion of the metal plate 1 is arranged so that the protruding portion T1 and the wall 7 are in contact with each other as shown in FIG. The groove 9 as shown in FIG. 4 is not formed between the protrusion T1 and the wall 7.

上記実施の形態1〜4の半導体装置の製造方法において、絶縁性樹脂注入時の断面概略図を図3に示した。
この半導体装置の製造方法においては、金属板1の突出部T1側の面の反対側の主面上に半導体素子2を搭載し、半導体素子2の電極パッド3と金属リード5を金属細線4で電気的に接続し、壁7で囲われた金属板1の中央部を露出するように、かつ金属板1と複数の金属リード5と半導体素子2と金属細線4を覆うように、絶縁性樹脂6を、図3のように、封止金型8で挟み込んだ内部へ注入する。
FIG. 3 shows a schematic cross-sectional view at the time of injecting the insulating resin in the method for manufacturing the semiconductor device of the first to fourth embodiments.
In this method of manufacturing a semiconductor device, the semiconductor element 2 is mounted on the main surface opposite to the surface on the protruding portion T1 side of the metal plate 1, and the electrode pad 3 and the metal lead 5 of the semiconductor element 2 are connected by the thin metal wire 4. An insulating resin that is electrically connected to expose the central portion of the metal plate 1 surrounded by the wall 7 and to cover the metal plate 1, the plurality of metal leads 5, the semiconductor element 2, and the fine metal wires 4. 6 is injected into the inside sandwiched between the sealing molds 8 as shown in FIG.

これらの実施の形態では、金属板1の中央部以外の部分に突出部T1を囲むように壁7を設けてかつ封止金型8と壁7が接触させることにより、封止金型8内への絶縁性樹脂6注入時に、絶縁性樹脂6の流れが壁7と封止金型8とでせき止められるので、金属板1の突出部T1部分における露出部R1への絶縁性樹脂6の流れ込みを回避することができる。   In these embodiments, the wall 7 is provided in a portion other than the central portion of the metal plate 1 so as to surround the projecting portion T1, and the sealing mold 8 and the wall 7 are brought into contact with each other, so that the inside of the sealing mold 8 Since the flow of the insulating resin 6 is blocked by the wall 7 and the sealing mold 8 when the insulating resin 6 is injected into the insulating resin 6, the insulating resin 6 flows into the exposed portion R1 at the protruding portion T1 of the metal plate 1. Can be avoided.

したがって、金属板1の露出部R1への樹脂バリの発生を防止し、樹脂バリが起因の金属板露出型半導体装置としての放熱性の低下、外観品質の低下、実装基板への接続性の阻害など問題を解消できる。
(実施の形態5)
図6は本実施の形態5の金属板露出型半導体装置の構成を示す断面概略図である。
Therefore, the occurrence of resin burrs on the exposed portion R1 of the metal plate 1 is prevented, and the heat dissipation as the metal plate exposed semiconductor device due to the resin burrs is deteriorated, the appearance quality is deteriorated, and the connectivity to the mounting substrate is hindered. The problem can be solved.
(Embodiment 5)
FIG. 6 is a schematic cross-sectional view showing the configuration of the metal plate exposed semiconductor device according to the fifth embodiment.

この金属板露出型半導体装置の全体構成は、図6に示すように、金属板1、半導体素子2、電極パッド3、金属細線4、金属リード5、絶縁性樹脂6より構成され、金属板1の半導体素子2を搭載した面の反対側の主面中央部分に突出した突出部T1を設け、絶縁性樹脂6と金属板1中央の突出部T1との間に溝10が形成される。   As shown in FIG. 6, the overall structure of the exposed metal plate semiconductor device is composed of a metal plate 1, a semiconductor element 2, an electrode pad 3, a thin metal wire 4, a metal lead 5, and an insulating resin 6. A projecting portion T1 projecting from the central portion of the main surface opposite to the surface on which the semiconductor element 2 is mounted is provided, and a groove 10 is formed between the insulating resin 6 and the projecting portion T1 at the center of the metal plate 1.

本実施の形態の半導体装置の製造方法は、初めに金属板1の中央部以外の部分に突出部T1を囲むように壁7を形成し、金属板1の突出部T1側の面の反対側の主面上に半導体素子2を搭載し、半導体素子2の電極パッド3と金属リード5を金属細線4で電気的に接続し、壁7で囲われた金属板1の中央部を露出するように、かつ金属板1と複数の金属リード5と半導体素子2と金属細線4を覆ように絶縁性樹脂6を形成し、その後、金属板1の中央部以外の部分に突出部T1を囲むように形成した壁7を取り除く。   In the manufacturing method of the semiconductor device of the present embodiment, first, a wall 7 is formed so as to surround the protruding portion T1 in a portion other than the central portion of the metal plate 1, and the opposite side of the surface of the metal plate 1 on the protruding portion T1 side. The semiconductor element 2 is mounted on the main surface, and the electrode pad 3 of the semiconductor element 2 and the metal lead 5 are electrically connected by the fine metal wire 4 so that the central portion of the metal plate 1 surrounded by the wall 7 is exposed. In addition, an insulating resin 6 is formed so as to cover the metal plate 1, the plurality of metal leads 5, the semiconductor element 2, and the fine metal wires 4, and then the protruding portion T <b> 1 is surrounded by a portion other than the central portion of the metal plate 1. Remove the wall 7 formed in

この製造方法のように、壁7を取り除くことで、金属板1の中央部の突出部T1と絶縁性樹脂6との間に溝10を形成する。
(実施の形態6)
図7は本実施の形態6の金属板露出型半導体装置の構成を示す断面概略図である。
By removing the wall 7 as in this manufacturing method, the groove 10 is formed between the protrusion T1 at the center of the metal plate 1 and the insulating resin 6.
(Embodiment 6)
FIG. 7 is a schematic cross-sectional view showing the configuration of the metal plate exposed semiconductor device according to the sixth embodiment.

この金属板露出型半導体装置の全体構成は、図7に示すように、金属板1、半導体素子2、電極パッド3、金属細線4、片面(上面)が金属細線との接続領域となり金属細線4との接続領域と反対の面が外部端子の役割を担う複数の金属リード5、絶縁性樹脂6で構成され、金属板1の半導体素子2を搭載した面の反対側の主面中央部分に突出した突出部T1を設け、金属板1の突出部T1と絶縁性樹脂6との間に溝10が存在する。   As shown in FIG. 7, the overall structure of the exposed metal plate semiconductor device is as follows. The metal plate 1, the semiconductor element 2, the electrode pad 3, the metal fine wire 4, and one surface (upper surface) serves as a connection region with the metal fine wire. The surface opposite to the connection region is composed of a plurality of metal leads 5 and insulating resin 6 that play the role of external terminals, and protrudes from the central portion of the main surface opposite to the surface on which the semiconductor element 2 of the metal plate 1 is mounted. The protruding portion T1 is provided, and the groove 10 exists between the protruding portion T1 of the metal plate 1 and the insulating resin 6.

本実施の形態の半導体装置の製造方法は、初めに金属板1の中央部以外の部分に突出部T1を囲むように壁7を形成し、金属板1の突出部T1側の面の反対側の主面上に半導体素子2を搭載し、半導体素子2の電極パッド3と金属リード5を金属細線4で電気的に接続し、壁7で囲われた金属板1の中央部を露出するように、かつ金属板1と複数の金属リード5と半導体素子2と金属細線4を覆うように絶縁性樹脂6を形成し、その後、金属板1の中央部以外の部分に突出部T1を囲むように形成した壁7を取り除く。   In the manufacturing method of the semiconductor device of the present embodiment, first, a wall 7 is formed so as to surround the protruding portion T1 in a portion other than the central portion of the metal plate 1, and the opposite side of the surface of the metal plate 1 on the protruding portion T1 side. The semiconductor element 2 is mounted on the main surface, and the electrode pad 3 of the semiconductor element 2 and the metal lead 5 are electrically connected by the fine metal wire 4 so that the central portion of the metal plate 1 surrounded by the wall 7 is exposed. In addition, an insulating resin 6 is formed so as to cover the metal plate 1, the plurality of metal leads 5, the semiconductor element 2, and the fine metal wires 4, and then the protruding portion T <b> 1 is surrounded by a portion other than the central portion of the metal plate 1. Remove the wall 7 formed in

この製造方法のように、壁7を取り除くことで、金属板1の中央部の突出部T1と絶縁性樹脂6との間に溝10を形成する。
なお次に、上記各実施の形態の半導体装置に使用する金属板を含む金属基板について説明する。
By removing the wall 7 as in this manufacturing method, the groove 10 is formed between the protrusion T1 at the center of the metal plate 1 and the insulating resin 6.
Next, a metal substrate including a metal plate used for the semiconductor device of each of the above embodiments will be described.

図8は本実施の形態の金属板露出型半導体装置に使用する金属板1を含む金属基板M1の概略図である。図8(a)は金属基板M1下面側の概略図、図8(b)は図8(a)をC−C’方向に切断した断面概略図である。   FIG. 8 is a schematic view of a metal substrate M1 including the metal plate 1 used in the metal plate exposed semiconductor device of the present embodiment. FIG. 8A is a schematic view of the lower surface side of the metal substrate M1, and FIG. 8B is a schematic cross-sectional view of FIG. 8A cut in the C-C ′ direction.

この金属基板M1の全体構成は、図8に示すように、半導体素子搭載部12とその反対の面の主面中央部に突出した突出部T1が形成された金属板1と、半導体素子搭載部12の周辺に配置された複数の金属リード13とを設け、半導体素子搭載部12の反対の面の主面中央部の中央部以外の部分に突出部T1を囲むように壁7を設けている。   As shown in FIG. 8, the overall configuration of the metal substrate M1 includes a semiconductor element mounting portion 12 and a metal plate 1 formed with a protruding portion T1 protruding at the center of the main surface opposite to the semiconductor element mounting portion 12, and a semiconductor element mounting portion. A plurality of metal leads 13 arranged around 12 are provided, and a wall 7 is provided so as to surround the protruding portion T1 in a portion other than the central portion of the central portion of the main surface opposite to the semiconductor element mounting portion 12. .

ここで、金属板1の半導体素子搭載部12の反対の面の主面中央部の中央部以外の部分に、突出部T1を囲むように形成する壁7は、樹脂材料で金属板1へ接着することが好ましい。   Here, the wall 7 formed so as to surround the protruding portion T1 in a portion other than the central portion of the central portion of the main surface opposite to the semiconductor element mounting portion 12 of the metal plate 1 is bonded to the metal plate 1 with a resin material. It is preferable to do.

特に金属板1への壁7の接着は、エポキシ系樹脂、フェノール系樹脂、アクリル系樹脂、シリコーンで接着することが好ましい。
また、本発明の半導体装置において、金属板1の中央部以外の部分に突出部T1を囲むように形成した壁7は、前記金属板1と材質が異なることが好ましい。
In particular, the wall 7 is preferably bonded to the metal plate 1 with an epoxy resin, a phenol resin, an acrylic resin, or silicone.
Further, in the semiconductor device of the present invention, it is preferable that the wall 7 formed so as to surround the protruding portion T1 at a portion other than the central portion of the metal plate 1 is made of a material different from that of the metal plate 1.

また、金属板1の半導体素子搭載部12の反対の面の主面中央部の中央部以外の部分に、突出部T1を囲むように形成する壁7は、樹脂材料でありかつ絶縁性樹脂6と異なる物性の樹脂材料であることが好ましい。   Further, the wall 7 formed so as to surround the protruding portion T1 in a portion other than the central portion of the central portion of the main surface opposite to the semiconductor element mounting portion 12 of the metal plate 1 is a resin material and has an insulating resin 6. It is preferable that the resin material has different physical properties.

また、本発明の半導体装置では、金属板1の中央部以外の部分に突出部T1を囲むように形成した壁7として、熱可塑性樹脂を用いることが可能である。壁7の熱可塑性樹脂は絶縁性樹脂6の注入時の加熱により流動化する。流動化した壁7の可塑性樹脂は、金属板1と封止金型8との空間を埋めるため、金属板1の露出部R1と封止金型8との接触面に生じる間隙S1への絶縁性樹脂6の流れ込みを回避し、樹脂バリ11の発生を防止する。   Further, in the semiconductor device of the present invention, a thermoplastic resin can be used as the wall 7 formed so as to surround the protruding portion T1 in a portion other than the central portion of the metal plate 1. The thermoplastic resin of the wall 7 is fluidized by heating when the insulating resin 6 is injected. The fluidized plastic resin of the wall 7 fills the space between the metal plate 1 and the sealing mold 8, so that the insulation to the gap S 1 generated at the contact surface between the exposed portion R 1 of the metal plate 1 and the sealing mold 8 is performed. The flow of the resin 6 is avoided and the generation of the resin burr 11 is prevented.

壁7は、熱可塑性樹脂として、アクリル樹脂、ポリテトラフルオロエチレン、熱可塑性ポリイミドなどを用いることが好ましい。
また、本発明の半導体装置では、金属板1の中央部以外の部分に突出部T1を囲むように形成した壁7として、熱硬化性樹脂を用いることが好ましい。
The wall 7 is preferably made of acrylic resin, polytetrafluoroethylene, thermoplastic polyimide, or the like as the thermoplastic resin.
In the semiconductor device of the present invention, it is preferable to use a thermosetting resin as the wall 7 formed so as to surround the protruding portion T1 in a portion other than the central portion of the metal plate 1.

壁7の熱硬化性樹脂は、絶縁性樹脂の注入時の加熱により一旦流動化する。流動化した壁7の熱硬化性樹脂は、金属板1と封止金型8との空間を埋めたのち硬化するため、金属板1の露出部R1と封止金型8との接触面に生じる間隙S1への絶縁性樹脂6の流れ込みを回避し、樹脂バリ11の発生を防止する。   The thermosetting resin on the wall 7 is once fluidized by heating at the time of injecting the insulating resin. The fluidized thermosetting resin of the wall 7 is cured after filling the space between the metal plate 1 and the sealing mold 8, so that the exposed surface R 1 of the metal plate 1 and the sealing mold 8 are in contact with each other. The flow of the insulating resin 6 into the generated gap S1 is avoided, and the generation of the resin burr 11 is prevented.

特に壁7は、熱硬化性樹脂として、エポキシ系樹脂、ポリイミドアミド、フェノール系樹脂、ポリウレタン樹脂を用いることが好ましい。
また、本発明の半導体装置において、金属板1の中央部に設けた突出部T1の厚さは、金属板1の厚さの1/2以下とする。
In particular, the wall 7 is preferably made of an epoxy resin, a polyimide amide, a phenol resin, or a polyurethane resin as a thermosetting resin.
Further, in the semiconductor device of the present invention, the thickness of the protruding portion T1 provided at the central portion of the metal plate 1 is set to ½ or less of the thickness of the metal plate 1.

また、金属板1の中央部以外の突出部を囲むように形成した壁7の厚さは、金属板1の中央部に設けた突出部T1の厚さ以上とする。
壁7の厚みを、金属板1の半導体素子搭載部12の反対の面の主面中央部に設けた突出部T1の厚さ以上とすることで、金属板露出型半導体装置の製造時に、壁7と封止金型8とが接触して金属板1と封止金型8との空間を埋めるため、金属板1露出部R1への絶縁性樹脂6の流れ込みを回避し、樹脂バリ11の発生を防止する。
The thickness of the wall 7 formed so as to surround the protruding portion other than the central portion of the metal plate 1 is equal to or greater than the thickness of the protruding portion T1 provided at the central portion of the metal plate 1.
By making the thickness of the wall 7 equal to or greater than the thickness of the projecting portion T1 provided at the central portion of the main surface opposite to the semiconductor element mounting portion 12 of the metal plate 1, when manufacturing the metal plate exposed semiconductor device, 7 and the sealing mold 8 are in contact with each other to fill the space between the metal plate 1 and the sealing mold 8, so that the insulating resin 6 does not flow into the exposed portion R 1 of the metal plate 1, Prevent occurrence.

また、金属板1の中央部以外の突出部T1を囲むように形成した壁7は、図8に示すように、突出部T1を一周囲むように形成することが好ましい。
金属板1の壁7は、金属板1の突出部全周を周縁で囲むよう形成することで、金属板露出型半導体装置の製造時に、金属板1の露出部R1への絶縁性樹脂6の流れ込みを、露出部R1の全方向において回避し、露出部R1の全方向において樹脂バリ11の発生を防止する。
Moreover, it is preferable to form the wall 7 formed so as to surround the protruding portion T1 other than the central portion of the metal plate 1 so as to surround the protruding portion T1 as shown in FIG.
The wall 7 of the metal plate 1 is formed so as to surround the entire periphery of the protruding portion of the metal plate 1 with the periphery, so that the insulating resin 6 is exposed to the exposed portion R1 of the metal plate 1 during the manufacture of the metal plate exposed semiconductor device. Inflow is avoided in all directions of the exposed portion R1, and the generation of the resin burr 11 is prevented in all directions of the exposed portion R1.

また、本発明の半導体装置では、金属板1の中央部以外の部分に突出部T1を囲むように形成した壁7は、突出部T1の形状が多角形の場合、突出部T1の周縁に一辺以上に設ける。   Further, in the semiconductor device of the present invention, the wall 7 formed so as to surround the protruding portion T1 in a portion other than the central portion of the metal plate 1 has one side around the periphery of the protruding portion T1 when the shape of the protruding portion T1 is a polygon. Provided above.

本発明の半導体装置およびその製造方法は、樹脂バリによる半導体装置の放熱性の低下、外観品質の低下、実装基板への接続性の阻害などの問題を解消することができるとともに、半導体装置の温度上昇による誤作動、半導体装置を搭載したシステム全体の誤作動・停止、火災事故発生の可能性を低減することができるもので、半導体装置の中でも、放熱を伴う高消費電力商品・PDP−TV・液晶TV・有機ELパネルを使用した製品・カーオーディオ機器・ゲーム機・携帯電話などに使用される半導体装置の信頼性の向上に寄与できる。   The semiconductor device and the manufacturing method thereof according to the present invention can solve the problems such as deterioration of heat dissipation of the semiconductor device due to resin burr, deterioration of appearance quality, obstruction of connectivity to the mounting substrate, and temperature of the semiconductor device. It can reduce the possibility of malfunction due to rising, malfunction / stop of the entire system equipped with semiconductor devices, and the occurrence of fire accidents. Among semiconductor devices, high power consumption products with heat dissipation, PDP-TV, It can contribute to improving the reliability of semiconductor devices used in products, liquid crystal TVs, organic EL panels, car audio equipment, game machines, mobile phones and the like.

本発明の実施の形態1の半導体装置の構造を示す概略構成図Schematic configuration diagram showing the structure of the semiconductor device according to the first embodiment of the present invention. 本発明の実施の形態2の半導体装置の構造を示す概略構成図Schematic configuration diagram showing the structure of the semiconductor device according to the second embodiment of the present invention. 本発明の実施の形態の半導体装置の製造方法における絶縁性樹脂注入時の概略断面図Schematic sectional view at the time of insulative resin injection in the semiconductor device manufacturing method of the embodiment of the present invention 本発明の実施の形態3の半導体装置の構造を示す概略断面図Schematic sectional view showing the structure of the semiconductor device according to the third embodiment of the present invention. 本発明の実施の形態4の半導体装置の構造を示す概略断面図Schematic sectional view showing the structure of the semiconductor device according to the fourth embodiment of the present invention. 本発明の実施の形態5の半導体装置の構造を示す概略断面図Schematic sectional view showing the structure of the semiconductor device according to the fifth embodiment of the present invention. 本発明の実施の形態6の半導体装置の構造を示す概略断面図Schematic sectional view showing the structure of the semiconductor device according to the sixth embodiment of the present invention. 本発明の実施の形態の半導体装置に使用する金属板の構造を示す概略構成図The schematic block diagram which shows the structure of the metal plate used for the semiconductor device of embodiment of this invention 従来の半導体装置の製造方法における絶縁性注入時の概略断面図Schematic cross-sectional view at the time of insulative injection in a conventional method for manufacturing a semiconductor device 従来の半導体装置の構造を示す概略断面図Schematic sectional view showing the structure of a conventional semiconductor device

符号の説明Explanation of symbols

1 金属板
2 半導体素子
3 電極パッド
4 金属細線
5 金属リード
6 絶縁性樹脂
7 壁
8 封止金型
9 溝
10 溝
11 樹脂バリ
12 半導体素子搭載部
13 金属リード
M1 金属基板
T1 突出部
R1 露出部
S1 隙間
DESCRIPTION OF SYMBOLS 1 Metal plate 2 Semiconductor element 3 Electrode pad 4 Metal thin wire 5 Metal lead 6 Insulating resin 7 Wall 8 Sealing die 9 Groove 10 Groove 11 Resin burr 12 Semiconductor element mounting part 13 Metal lead M1 Metal substrate T1 Protrusion part R1 Exposed part S1 gap

Claims (13)

板状体で一主面上に半導体素子を搭載した金属板と、
前記金属板の周辺に配置した複数の金属リードと、
前記半導体素子の電極パッドと前記複数の金属リードを電気接続する金属細線とを備え、
前記金属板における前記半導体素子の搭載面とは反対側の主面中央部分に突出した突出部を形成し、
前記金属板における前記半導体素子の搭載面とは反対側の主面中央部分以外の部分に前記突出部を囲むように形成した壁を配置し、
前記壁で囲まれた前記突出部を露出するように、前記金属板と前記複数の金属リードと前記半導体素子と前記金属細線を覆う絶縁性樹脂を形成した
ことを特徴とする半導体装置。
A metal plate with a semiconductor element mounted on one principal surface in a plate-like body;
A plurality of metal leads arranged around the metal plate;
An electrode pad of the semiconductor element and a thin metal wire that electrically connects the plurality of metal leads;
Forming a protruding portion protruding in a central portion of the main surface opposite to the mounting surface of the semiconductor element in the metal plate;
A wall formed so as to surround the protruding portion in a portion other than the central portion of the main surface opposite to the mounting surface of the semiconductor element in the metal plate,
A semiconductor device characterized in that an insulating resin is formed to cover the metal plate, the plurality of metal leads, the semiconductor element, and the thin metal wire so as to expose the protruding portion surrounded by the wall.
前記壁を前記突出部から離して配置することにより、前記壁と前記突出部との間に溝を形成したことを特徴とする請求項1に記載の半導体装置。   The semiconductor device according to claim 1, wherein a groove is formed between the wall and the protrusion by disposing the wall away from the protrusion. 前記壁は、前記突出部に接触するように配置したことを特徴とする請求項1に記載の半導体装置。   The semiconductor device according to claim 1, wherein the wall is disposed so as to contact the protruding portion. 前記壁は、前記金属板と材質が異なることを特徴とする請求項1から請求項3のいずれかに記載の半導体装置。   The semiconductor device according to claim 1, wherein the wall is made of a material different from that of the metal plate. 前記壁は、前記絶縁性樹脂と異なる樹脂材料よりなることを特徴とする請求項1から請求項4のいずれかに記載の半導体装置。   The semiconductor device according to claim 1, wherein the wall is made of a resin material different from the insulating resin. 板状体で一主面上に半導体素子を搭載した金属板と、
前記金属板の周辺に配置した複数の金属リードと、
前記半導体素子の電極パッドと前記複数の金属リードを電気接続する金属細線とを備え、
前記金属板における前記半導体素子の搭載面とは反対側の主面中央部分に突出した突出部を形成し、
前記突出部を露出するように、前記金属板と前記複数の金属リードと前記半導体素子と前記金属細線を覆う絶縁性樹脂を形成し、
前記絶縁性樹脂の形成時に、前記突出部の露出部分への前記絶縁性樹脂の流入を阻止するために一時的に前記突出部を囲むように配置された壁を、前記絶縁性樹脂の形成終了後時に除去したことで、前記突出部と前記絶縁性樹脂との間に形成された溝を有する
ことを特徴とする半導体装置。
A metal plate with a semiconductor element mounted on one principal surface in a plate-like body;
A plurality of metal leads arranged around the metal plate;
An electrode pad of the semiconductor element and a thin metal wire that electrically connects the plurality of metal leads;
Forming a protruding portion protruding in a central portion of the main surface opposite to the mounting surface of the semiconductor element in the metal plate;
Forming an insulating resin that covers the metal plate, the plurality of metal leads, the semiconductor element, and the fine metal wires so as to expose the protruding portion;
When the insulating resin is formed, a wall disposed so as to temporarily surround the protruding portion in order to prevent the insulating resin from flowing into the exposed portion of the protruding portion, the formation of the insulating resin is completed. A semiconductor device having a groove formed between the protruding portion and the insulating resin by being removed later.
金属基板を構成する板状体で一主面上の中央部分に突出した突出部が形成された金属板の前記突出部の形成面で中央部分以外の部分に、前記突出部を囲むように壁を形成して配置する工程と、
前記金属板の前記突出部の形成面とは反対側の主面上に半導体素子を搭載する工程と、
前記半導体素子の電極パッドと前記金属板の周辺に配置された金属基板を構成する複数の金属リードを金属細線で電気接続する工程と、
前記壁で囲まれた前記突出部を露出するように、前記金属板と前記複数の金属リードと前記半導体素子と前記金属細線を、絶縁性樹脂で覆って樹脂封止する工程とを有する
ことを特徴とする半導体装置の製造方法。
A metal plate in which a protruding portion protruding from a central portion on one principal surface is formed by a plate-like body constituting a metal substrate, and a wall surrounding the protruding portion on a portion other than the central portion on the forming surface of the protruding portion of the metal plate Forming and arranging
Mounting a semiconductor element on a main surface opposite to a surface on which the protruding portion of the metal plate is formed;
Electrically connecting a plurality of metal leads constituting a metal substrate disposed around the electrode pad of the semiconductor element and the metal plate with a thin metal wire;
Covering the metal plate, the plurality of metal leads, the semiconductor element, and the thin metal wire with an insulating resin so as to expose the projecting portion surrounded by the wall. A method of manufacturing a semiconductor device.
金属基板を構成する板状体で一主面上の中央部分に突出した突出部が形成された金属板の前記突出部の形成面で中央部分以外の部分に、前記突出部を囲むように壁を形成して配置する工程と、
前記金属板の前記突出部の形成面とは反対側の主面上に半導体素子を搭載する工程と、
前記半導体素子の電極パッドと前記金属板の周辺に配置された金属基板を構成する複数の金属リードを金属細線で電気接続する工程と、
前記壁で囲まれた前記突出部を露出するように、前記金属板と前記複数の金属リードと前記半導体素子と前記金属細線を、絶縁性樹脂で覆って樹脂封止する工程と、
前記壁を除去する工程とを有する
ことを特徴とする半導体装置の製造方法。
A metal plate in which a protruding portion protruding from a central portion on one principal surface is formed by a plate-like body constituting a metal substrate, and a wall surrounding the protruding portion on a portion other than the central portion on the forming surface of the protruding portion of the metal plate Forming and arranging
Mounting a semiconductor element on a main surface opposite to a surface on which the protruding portion of the metal plate is formed;
Electrically connecting a plurality of metal leads constituting a metal substrate disposed around the electrode pad of the semiconductor element and the metal plate with a thin metal wire;
Covering the metal plate, the plurality of metal leads, the semiconductor element, and the thin metal wire with an insulating resin so as to expose the projecting portion surrounded by the wall;
And a step of removing the wall.
前記壁は、前記絶縁性樹脂により前記樹脂封止する工程より先に形成することを特徴とする請求項7または請求項8に記載の半導体装置の製造方法。   9. The method of manufacturing a semiconductor device according to claim 7, wherein the wall is formed prior to the step of sealing the resin with the insulating resin. 前記壁を前記突出部から離して配置することにより、前記壁と前記突出部との間に溝を形成することを特徴とする請求項7から請求項9のいずれかに記載の半導体装置の製造方法。   The semiconductor device according to claim 7, wherein a groove is formed between the wall and the protrusion by disposing the wall away from the protrusion. Method. 前記壁は、前記突出部に接触するように配置することを特徴とする請求項7から請求項9のいずれかに記載の半導体装置の製造方法。   The method for manufacturing a semiconductor device according to claim 7, wherein the wall is disposed so as to contact the protruding portion. 前記壁は、前記金属板と材質が異なる材料で形成することを特徴とする請求項7から請求項11のいずれかに記載の半導体装置の製造方法。   The method of manufacturing a semiconductor device according to claim 7, wherein the wall is formed of a material different from that of the metal plate. 前記壁は、前記絶縁性樹脂と異なる樹脂材料で形成することを特徴とする請求項7から請求項12のいずれかに記載の半導体装置の製造方法。   The method for manufacturing a semiconductor device according to claim 7, wherein the wall is formed of a resin material different from the insulating resin.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011091145A (en) * 2009-10-21 2011-05-06 Sanyo Electric Co Ltd Semiconductor device and method of manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011091145A (en) * 2009-10-21 2011-05-06 Sanyo Electric Co Ltd Semiconductor device and method of manufacturing the same

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