JPH05243465A - Packaging method of semiconductor device - Google Patents

Packaging method of semiconductor device

Info

Publication number
JPH05243465A
JPH05243465A JP4045374A JP4537492A JPH05243465A JP H05243465 A JPH05243465 A JP H05243465A JP 4045374 A JP4045374 A JP 4045374A JP 4537492 A JP4537492 A JP 4537492A JP H05243465 A JPH05243465 A JP H05243465A
Authority
JP
Japan
Prior art keywords
lead
electrode
semiconductor chip
tab tape
plating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4045374A
Other languages
Japanese (ja)
Other versions
JP3043884B2 (en
Inventor
Toshinori Ando
敏範 安藤
Kohei Tatsumi
宏平 巽
Takahide Ono
恭秀 大野
Takao Fujizu
隆夫 藤津
Yoshimasa Kudo
好正 工藤
Shinya Shimizu
真也 清水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Nippon Steel Corp
Original Assignee
Toshiba Corp
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Nippon Steel Corp filed Critical Toshiba Corp
Priority to JP4045374A priority Critical patent/JP3043884B2/en
Publication of JPH05243465A publication Critical patent/JPH05243465A/en
Application granted granted Critical
Publication of JP3043884B2 publication Critical patent/JP3043884B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/01Means 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
    • H01L24/50Tape automated bonding [TAB] connectors, i.e. film carriers; Manufacturing methods related thereto
    • 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
    • H01L2224/50Tape automated bonding [TAB] connectors, i.e. film carriers; Manufacturing methods related thereto

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Wire Bonding (AREA)
  • Lead Frames For Integrated Circuits (AREA)

Abstract

PURPOSE:To prevent short-circuit between leads or electrodes, when a TAB tape or the lead tip of a lead frame is connected with the electrode of a semiconductor chip. CONSTITUTION:In the case of packaging a semiconductor device, a TAB tape or the lead tip part 8 of a lead frame 5 is made to approach to or brought into contact with an electrode 3 formed on the surface of a semiconductor chip 1, and the lead tip part 8 is connected with an electrode 3 by electroplating under the following configuration; the TAB tape or the lead of the lead frame is used as a negative electrode, and an anode plate 15 is arranged on the electrode 3 side of a semiconductor chip 1, so as to be parallel with the TAB or the lead 7 of the lead frame 5.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、半導体装置の実装方
法、特にTABテープまたはリードフレームのリード先
端部と半導体チップの電極とを接続する方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of mounting a semiconductor device, and more particularly to a method of connecting a lead tip portion of a TAB tape or a lead frame and an electrode of a semiconductor chip.

【0002】[0002]

【従来の技術】従来、リードフレーム、TABテープ、
プリント基板などの外部電極または外部リードと半導体
チップの電極との接続には、ワイヤボンディング法また
はフリップチップ法が広く用いられていた。ワイヤボン
ディング法はファインピッチが困難であり、またフリッ
プチップ法は工程が複雑であるいう問題があった。さら
に、これら方法はいずれも一度に多数個処理することは
困難であった。
2. Description of the Related Art Conventionally, lead frames, TAB tapes,
A wire bonding method or a flip chip method has been widely used for connecting an external electrode or an external lead such as a printed circuit board to an electrode of a semiconductor chip. The wire bonding method has a problem that fine pitch is difficult, and the flip chip method has a problem that the process is complicated. Furthermore, it is difficult to process a large number of these methods at one time.

【0003】この様な問題を解決する接続方法として、
外部電極または外部リードと半導体チップの電極とを近
接して配置してメッキを行い、両者間にメッキ金属を成
長させて両者を接続する方法が提案されている。(特公
昭57−50056号、特開平2−66953号公報参
照)メッキには金、ニッケル、銅などの電解メッキまた
は無電解メッキが用いられる。
As a connection method for solving such a problem,
There has been proposed a method in which an external electrode or an external lead and an electrode of a semiconductor chip are arranged close to each other to perform plating, and a plating metal is grown between the two to connect them. (See JP-B-57-50056 and JP-A-2-66953) For plating, electrolytic plating or electroless plating of gold, nickel, copper or the like is used.

【0004】[0004]

【発明が解決しようとする課題】TABテープのリード
間および半導体チップの電極間の間隔は、一般に100
μm 以下と極めて狭い。一方、TABテープのリード先
端部と半導体チップの電極とをメッキにより接続する
際、メッキ金属はリード先端部と半導体チップの電極と
を結ぶ方向に対して直角方向にも成長する。このような
場合、隣り合うリードまたは電極がメッキ金属によりつ
ながり、短絡することがあった。
The spacing between the leads of the TAB tape and the electrodes of the semiconductor chip is generally 100.
Extremely narrow, less than μm. On the other hand, when the lead tip portion of the TAB tape and the electrode of the semiconductor chip are connected by plating, the plated metal also grows in a direction perpendicular to the direction connecting the lead tip portion and the electrode of the semiconductor chip. In such a case, the leads or electrodes adjacent to each other may be connected by the plated metal and may be short-circuited.

【0005】この発明は、隣り合うリードまたは電極が
メッキ金属により短絡することなく、TABテープまた
はリードフレームのリード先端部と半導体チップの電極
とを接続することができる半導体装置の実装方法を提供
しようとするものである。
The present invention provides a method of mounting a semiconductor device, which can connect the lead tip of a TAB tape or a lead frame to the electrode of a semiconductor chip without short-circuiting adjacent leads or electrodes due to plated metal. It is what

【0006】[0006]

【課題を解決するための手段】この発明の半導体装置の
実装方法は、TABテープまたはリードフレームのリー
ド先端部と半導体チップの表面に形成された電極とを近
接または接触させ、電解メッキにより上記リード先端部
と電極とを接続する。TABテープまたはリードフレー
ムのリードを負電極とし、陽電極板をTABテープまた
はリードフレームのリードと平行に、かつTABテープ
またはリードフレームのリードに対して半導体チップの
電極側に配置して上記メッキを行う。
According to the method of mounting a semiconductor device of the present invention, the lead tip of a TAB tape or a lead frame and an electrode formed on the surface of a semiconductor chip are brought into proximity or contact with each other, and the lead is electroplated. Connect the tip and the electrode. The lead of the TAB tape or the lead frame is used as the negative electrode, the positive electrode plate is arranged in parallel with the lead of the TAB tape or the lead frame, and on the electrode side of the semiconductor chip with respect to the lead of the TAB tape or the lead frame, and the above plating is performed. To do.

【0007】陽電極板の縦幅および横幅は、メッキ中の
半導体チップの縦幅および横幅の1.5〜2倍程度(複
数の半導体チップを同時にメッキする場合には、その個
数倍)が望ましい。陽電極板として、Pt板が用いられ
る。メッキ金属として銅、ニッケル、金などが用いられ
る。
The vertical width and the horizontal width of the positive electrode plate are preferably about 1.5 to 2 times the vertical width and the horizontal width of the semiconductor chip being plated (in the case of simultaneously plating a plurality of semiconductor chips, the number of times). .. A Pt plate is used as the positive electrode plate. Copper, nickel, gold or the like is used as the plating metal.

【0008】[0008]

【作用】TABテープまたはリードフレームのリードを
負電極とし、陽電極板をTABテープのリードと平行
に、かつTABテープまたはリードフレームのリードに
対して半導体チップの電極側に配置しているので、半導
体チップの電極からTABテープまたはリードフレーム
のリード先端部に向かって平行に電場が形成される。し
たがって、メッキ金属はTABテープまたはリードフレ
ームのリードと半導体チップの電極との間で主として成
長し、横方向に大きく広がることはない。
Since the lead of the TAB tape or the lead frame is used as the negative electrode and the positive electrode plate is arranged parallel to the lead of the TAB tape and on the electrode side of the semiconductor chip with respect to the lead of the TAB tape or the lead frame, An electric field is formed in parallel from the electrodes of the semiconductor chip toward the lead tips of the TAB tape or the lead frame. Therefore, the plated metal mainly grows between the leads of the TAB tape or the lead frame and the electrodes of the semiconductor chip, and does not spread greatly in the lateral direction.

【0009】[0009]

【実施例】図1は、この発明を実施するメッキ装置を模
式的に示している。
DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 schematically shows a plating apparatus for carrying out the present invention.

【0010】図に示すように、メッキ槽11中にテフロ
ン製の支持フレーム12および支持フレーム12に相対
するようにして平行にPt陽極板15が取り付けられて
いる。支持フレーム12には、半導体チップ1が着脱可
能に固定されている。また、TABテープ5のリード先
端部8が半導体チップ1の電極3に近接あるいは接触す
るようにして、TABテープ5が支持フレーム12にス
ペーサ13を介して着脱可能に固定されている。スペー
サ13により、TABフレーム5のリード先端部8は半
導体チップ1の電極3に対して正確に位置決めされる。
上記陽極板15およびTABテープ5のリードには、直
流電源17が接続されている。このような配置により、
半導体チップ1の電極3からTABテープ5のリード先
端部8に向かって平行に電場が形成される。
As shown in the drawing, a support frame 12 made of Teflon and a Pt anode plate 15 are mounted in parallel in the plating tank 11 so as to face the support frame 12. The semiconductor chip 1 is detachably fixed to the support frame 12. Further, the TAB tape 5 is detachably fixed to the support frame 12 via the spacer 13 so that the lead tip portion 8 of the TAB tape 5 approaches or contacts the electrode 3 of the semiconductor chip 1. By the spacer 13, the lead tip portion 8 of the TAB frame 5 is accurately positioned with respect to the electrode 3 of the semiconductor chip 1.
A DC power supply 17 is connected to the leads of the anode plate 15 and the TAB tape 5. With this arrangement,
An electric field is formed in parallel from the electrode 3 of the semiconductor chip 1 toward the lead tip 8 of the TAB tape 5.

【0011】上記メッキ装置を用いて銅メッキにより、
TABテープのリード先端部と半導体チップの電極とを
接続した。メッキ液はCuSO4 (0.8mol/l )およ
びH2 SO4 (0.5mol/l )よりなっている。メッキ
電流は0.6mAであり、メッキ時間は40〜60分であ
った。リード先端部と電極との間に形成された銅メッキ
の厚みは6〜10μm であった。
By copper plating using the above plating apparatus,
The lead tip of the TAB tape was connected to the electrode of the semiconductor chip. The plating solution consists of CuSO 4 (0.8 mol / l) and H 2 SO 4 (0.5 mol / l). The plating current was 0.6 mA and the plating time was 40 to 60 minutes. The thickness of the copper plating formed between the lead tips and the electrodes was 6 to 10 μm.

【0012】図2は、TABテープのリード先端部と半
導体チップの電極とをメッキにより接続した状態を示し
ている。半導体チップ1の表面はシリコン酸化膜などの
絶縁性保護膜2で覆われている。また、Ni金属などに
より形成された複数の電極3が、半導体チップ5の表面
周縁に沿って配置され、チップ表面から突出している。
TABテープ5は、ポリイミド基板6に銅リード7が設
けられている。リード先端部8と電極3との間は、上記
銅メッキにより銅の電路9が形成されており、両者は電
気的に接続されている。
FIG. 2 shows a state in which the lead tips of the TAB tape and the electrodes of the semiconductor chip are connected by plating. The surface of the semiconductor chip 1 is covered with an insulating protective film 2 such as a silicon oxide film. A plurality of electrodes 3 made of Ni metal or the like are arranged along the peripheral edge of the surface of the semiconductor chip 5 and protrude from the chip surface.
In the TAB tape 5, a copper lead 7 is provided on a polyimide substrate 6. A copper electric path 9 is formed between the lead tip portion 8 and the electrode 3 by the copper plating, and both are electrically connected.

【0013】[0013]

【発明の効果】この発明によれば、メッキ金属がTAB
テープまたはリードフレームのリードと半導体チップの
電極との間で主として成長し、横方向に大きく広がるこ
とはない。この結果、メッキの膜厚を適当に制御するこ
とにより隣り合うリードまたは電極がメッキ金属により
つながることはなく、したがって短絡することはない。
According to the present invention, the plating metal is TAB.
It grows mainly between the leads of the tape or lead frame and the electrodes of the semiconductor chip and does not spread significantly in the lateral direction. As a result, by appropriately controlling the plating film thickness, adjacent leads or electrodes will not be connected by the plating metal, and therefore short circuits will not occur.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明を実施するメッキ装置の一例を示す模
式図である。
FIG. 1 is a schematic view showing an example of a plating apparatus for carrying out the present invention.

【図2】TABテープおよび半導体チップの一部断面図
であり、リード先端部と電極とをメッキにより接続した
状態を示している。
FIG. 2 is a partial cross-sectional view of a TAB tape and a semiconductor chip, showing a lead tip portion and an electrode connected by plating.

【符号の説明】[Explanation of symbols]

1 半導体チップ 3 電極 5 TABテープ 6 ポリイミド基板 7 リード 8 リード先端部 9 電路 11 メッキ槽 12 支持フレーム 13 スペーサ 15 陽極板 17 直流電源 19 メッキ液 1 Semiconductor Chip 3 Electrode 5 TAB Tape 6 Polyimide Substrate 7 Lead 8 Lead Tip 9 Electrical Path 11 Plating Tank 12 Support Frame 13 Spacer 15 Anode Plate 17 DC Power Supply 19 Plating Liquid

───────────────────────────────────────────────────── フロントページの続き (72)発明者 大野 恭秀 神奈川県川崎市中原区井田1618番地 新日 本製鐵株式会社先端技術研究所内 (72)発明者 藤津 隆夫 神奈川県川崎市幸区小向東芝町1番地 株 式会社東芝多摩川工場内 (72)発明者 工藤 好正 神奈川県川崎市幸区小向東芝町1番地 株 式会社東芝多摩川工場内 (72)発明者 清水 真也 神奈川県川崎市幸区小向東芝町1番地 株 式会社東芝多摩川工場内 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Yasuhide Ono 1618 Ida, Nakahara-ku, Kawasaki-shi, Kanagawa Inside Nippon Steel Corporation Advanced Technology Research Center (72) Takao Fujitsu Toshiba, Komukai Toshiba, Kawasaki-shi, Kanagawa Town No. 1 Incorporation company Toshiba Tamagawa Factory (72) Inventor Yoshimasa Kudo Komukai-ku, Kawasaki City, Kanagawa Prefecture Komukai Toshiba Town No. 1 Incorporation company Toshiba Tamagawa Factory (72) Inventor Shinya Shimizu Sachi-ku Kawasaki, Kanagawa Prefecture Komukai Toshiba Town No. 1 Inside the Tama River Factory of Toshiba Corporation

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 TABテープまたはリードフレームのリ
ード先端部と半導体チップの表面に形成された電極とを
近接または接触させ、電解メッキにより前記リード先端
部と電極とを接続する方法において、TABテープまた
はリードフレームのリードを負電極とし、陽電極板をT
ABテープまたはリードフレームのリードと平行に、か
つTABテープまたはリードフレームのリードに対して
半導体チップの電極側に配置して前記メッキを行うこと
を特徴とする半導体装置の実装方法。
1. A method of connecting a lead tip portion of a TAB tape or a lead frame and an electrode formed on the surface of a semiconductor chip in proximity or contact and connecting the lead tip portion to the electrode by electrolytic plating, The lead of the lead frame is the negative electrode and the positive electrode plate is T
A method for mounting a semiconductor device, wherein the plating is performed in parallel with the leads of the AB tape or the lead frame and on the electrode side of the semiconductor chip with respect to the leads of the TAB tape or the lead frame.
JP4045374A 1992-03-03 1992-03-03 Semiconductor device mounting method Expired - Fee Related JP3043884B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4045374A JP3043884B2 (en) 1992-03-03 1992-03-03 Semiconductor device mounting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4045374A JP3043884B2 (en) 1992-03-03 1992-03-03 Semiconductor device mounting method

Publications (2)

Publication Number Publication Date
JPH05243465A true JPH05243465A (en) 1993-09-21
JP3043884B2 JP3043884B2 (en) 2000-05-22

Family

ID=12717497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4045374A Expired - Fee Related JP3043884B2 (en) 1992-03-03 1992-03-03 Semiconductor device mounting method

Country Status (1)

Country Link
JP (1) JP3043884B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5786239A (en) * 1995-09-20 1998-07-28 Sony Corporation Method of manufacturing a semiconductor package
JP2004100009A (en) * 2002-09-11 2004-04-02 Nippon Telegr & Teleph Corp <Ntt> Method and device for manufacturing metallic electrode

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5786239A (en) * 1995-09-20 1998-07-28 Sony Corporation Method of manufacturing a semiconductor package
US5982033A (en) * 1995-09-20 1999-11-09 Sony Corporation Semiconductor chip package
JP2004100009A (en) * 2002-09-11 2004-04-02 Nippon Telegr & Teleph Corp <Ntt> Method and device for manufacturing metallic electrode

Also Published As

Publication number Publication date
JP3043884B2 (en) 2000-05-22

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