JPH03233950A - Flexible tape and mounting structure of semiconductor chip - Google Patents

Flexible tape and mounting structure of semiconductor chip

Info

Publication number
JPH03233950A
JPH03233950A JP2028471A JP2847190A JPH03233950A JP H03233950 A JPH03233950 A JP H03233950A JP 2028471 A JP2028471 A JP 2028471A JP 2847190 A JP2847190 A JP 2847190A JP H03233950 A JPH03233950 A JP H03233950A
Authority
JP
Japan
Prior art keywords
inner leads
semiconductor chip
flexible tape
leads
mounting structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2028471A
Other languages
Japanese (ja)
Inventor
Hisanori Maruyama
久則 丸山
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson 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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP2028471A priority Critical patent/JPH03233950A/en
Publication of JPH03233950A publication Critical patent/JPH03233950A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

  • Wire Bonding (AREA)

Abstract

PURPOSE:To obtain a flexible tape and the mounting structure, of a semiconductor chip, by which a desired forming amount is always obtained and in which there is no fear that a crack and a fracture are caused at inner leads by a method wherein the inner leads are formed by being bent respectively in the same direction by an amount corresponding to a forming depth inside a device hole. CONSTITUTION:When parts of inner leads 22, 32a, 32n protruding in device holes 2 of leads 31 to 31n are patterned/etched, they are formed by being bent to one side by an amount corresponding to a prescribed forming amount (depth of [h]). In order to mount a semiconductor chip 11, the individual inner leads 32 to 32n are first nipped by using a tool 7 or the like and are twisted by 90 deg.; protrusions 33 to 33n are directed downward. Then, electrodes 12 of a semiconductor chip 11 are bonded to the inner leads 32 to 32n one by one by using a bonding tool 8. Thereby, it is possible to obtain a mounting structure of the semiconductor chip on a flexible tape, by which a desired forming amount is always obtained and in which there is no fear that a crack and a fracture are caused in the inner leads.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、半導体チップが接続される多数のリードが形
成されたフレキシブルテープ及び該フレキシブルテープ
のリードに半導体チップを接続する実装構造に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a flexible tape on which a large number of leads are formed to which semiconductor chips are connected, and a mounting structure for connecting semiconductor chips to the leads of the flexible tape. be.

[従来の技術] フレキシブルテープを基板とし、これに形成されたイン
ナーリードに半導体チップの電極をそれぞれボンディン
グして半導体装置を製造する場合、第5図に示すように
フレキシブルテープ(1)に形成されたインナーリード
(4)が、半導体チップ(11)に接続していわゆるエ
ツジショートが発生するのを防止するため、第4図に示
すようにインナーリード(4〉をフォーミングして半導
体チップ(11)から離れる方向に折曲げている。
[Prior Art] When manufacturing a semiconductor device by using a flexible tape as a substrate and bonding electrodes of a semiconductor chip to inner leads formed on the substrate, as shown in FIG. In order to prevent so-called edge shorts from occurring when the inner leads (4) are connected to the semiconductor chip (11), the inner leads (4) are formed as shown in FIG. It is bent in the direction away from the

なお、第4図において、(2〉は半導体チップ(11)
が配設されるデバイスホール、(3)はフレキシブルテ
ープ(1)上に形成されたリード(回路バターン)で、
その先端部はデバイスホール(2)内に突出してインナ
ーリード(4)を形成している。
In addition, in FIG. 4, (2> is a semiconductor chip (11)
The device hole (3) is a lead (circuit pattern) formed on the flexible tape (1).
The tip thereof protrudes into the device hole (2) to form an inner lead (4).

(5)は半導体チップ(11)の電極(12)に接続す
るための金属突起(バンブ)である。
(5) is a metal protrusion (bump) for connecting to the electrode (12) of the semiconductor chip (11).

フォーミングの方法としては、インナーリード(4)を
電極にボンディングする際に、フレキシブルテープ(1
)をボンディング面より上方に位置させておき、ボンデ
ィングと同時にインナーリード(4)を加熱整形する方
法、あるいは、インナーリード(4)がボンディングさ
れた半導体チップ(11)を下方に引張ってインナーリ
ード(4)をフォーミングする方法などがある。
The forming method is to use flexible tape (1) when bonding the inner lead (4) to the electrode.
) is positioned above the bonding surface and the inner leads (4) are heated and shaped at the same time as bonding, or the semiconductor chip (11) to which the inner leads (4) are bonded is pulled downward and the inner leads (4) are heated and shaped at the same time as bonding. There is a method of forming 4).

この場合、フォーミングの寸法(第4図のh)が浅すぎ
る場合(例えば〇−以下)は、前述のようにエツジショ
ートが発生し易く、また第6図に示すようにフォーミン
グの寸法りが深すぎる場合(例えば300−以上)は、
折り曲げ部(6)に亀裂を生じたり、あるいは破断した
りして初期接続性及び接続信頼性に悪影響を与えていた
In this case, if the forming dimension (h in Figure 4) is too shallow (e.g. less than 0-), edge shorting is likely to occur as described above, and if the forming dimension is too deep as shown in Figure 6. If it is too high (e.g. 300- or more),
The bent portion (6) cracks or breaks, which adversely affects initial connectivity and connection reliability.

これらの点を考慮して、インナーリード(4)のフォー
ミングの深さhは、0〜aoo pの範囲が望ましいと
されている。
Taking these points into consideration, it is said that the forming depth h of the inner lead (4) is preferably in the range of 0 to aoo p.

[発明が解決しようとする課題] 従来の半導体装置は、上記のようにインナーリード(4
)のフォーミングの深さが0〜300 la1程度と比
較的浅いため、インナーリード(4)の変形が塑性領域
に入りに<<、変形が不安定で変形量にばらつきがあっ
たり、いわゆるスプリングバックにより加工戻りが発生
したりして、所望のフォーミング量が得られないという
問題があった。
[Problem to be solved by the invention] Conventional semiconductor devices have inner leads (four leads) as described above.
) has a relatively shallow forming depth of about 0 to 300 la1, the deformation of the inner lead (4) may enter the plastic region, resulting in unstable deformation and variations in the amount of deformation, or so-called springback. There was a problem in that the desired forming amount could not be obtained due to the occurrence of machining reversal.

本発明は上記の課題を解決するためになされたもので、
常に所望のフォーミング量が得られ、しかもインナーリ
ードに亀裂や破断の発生のおそれのない、フレキシブル
テープ及びフレキシブルテープへの半導体チップの実装
構造を得ることを目的としたものである。
The present invention was made to solve the above problems,
The object of the present invention is to obtain a flexible tape and a structure for mounting a semiconductor chip on the flexible tape, in which a desired forming amount can always be obtained and there is no fear of cracking or breaking the inner leads.

[課題を解決するための手段] 本発明に係るフレキシブルテープは、インナーリードを
デバイスホール内においてフォーミング深さに相当する
量だけそれぞれ同方向に曲げて形成したものである。
[Means for Solving the Problems] A flexible tape according to the present invention is formed by bending inner leads in the same direction within a device hole by an amount corresponding to the forming depth.

また、本発明に係る半導体チップの実装構造は、デバイ
スホール内においてフォーミング深さに相当する量だけ
それぞれ同方向に曲げて形成されたインナーリードを9
0″ねじり、このインナーリードをデバイスホールに配
設された半導体チップの電極にそれぞれ接続したもので
ある。
Furthermore, the semiconductor chip mounting structure according to the present invention has nine inner leads formed by bending them in the same direction by an amount corresponding to the forming depth in the device hole.
The inner leads are connected to the electrodes of the semiconductor chip arranged in the device holes.

[作 用] インナーリードを工具等で挾んでそれぞれ90″ねじり
、ついでデバイスホールに半導体チップを配設し、ボン
ディングツールにより半導体チップの電極とインナーリ
ードとを接続する。
[Function] The inner leads are pinched with a tool or the like and twisted by 90'', then the semiconductor chip is placed in the device hole, and the electrodes of the semiconductor chip and the inner leads are connected using a bonding tool.

これにより、インナーリードの曲りがそのままフォーミ
ング深さを形成するため、フォーミング深さを正確かつ
均一に保持することができる。
Thereby, since the bending of the inner lead directly forms the forming depth, the forming depth can be maintained accurately and uniformly.

[実施例] 第1図は本発明に係るフレキシブルテープの実施例の斜
視図である。なお、第4図の従来例と同じ部分には同じ
符号を付し、説明を省略する。
[Example] FIG. 1 is a perspective view of an example of a flexible tape according to the present invention. Incidentally, the same parts as in the conventional example shown in FIG. 4 are given the same reference numerals, and the explanation thereof will be omitted.

(31) 、 (31a) 、 (lln>はフレキシ
ブルテープ(1)上に形成された例えば銅箔の如く導電
率の高い材料からなるリード(回路パターン)で、例え
ばその幅Wは50IIffl、厚さtは40−に形成さ
れている。このリード(31)〜(31n)のデバイス
ホール(2)に突出するインナーリード(32) 、 
(’32a) 、 (32n)の部分は、バターニング
/エツチングの際第4図のフォーミング量(深さh)に
相当する量(例えば150u+i)だけ一方の側に曲げ
て形成されている。(H)。
(31), (31a), (lln> is a lead (circuit pattern) made of a material with high conductivity, such as copper foil, formed on the flexible tape (1), and has a width W of 50Iffl and a thickness, for example. t is formed at 40-.Inner leads (32) protruding into the device holes (2) of these leads (31) to (31n),
The portions ('32a) and (32n) are formed by being bent to one side by an amount (for example, 150u+i) corresponding to the forming amount (depth h) shown in FIG. 4 during buttering/etching. (H).

(83a) 、 (33n)はインナーリード(32)
〜(Hn)の先端部側壁に形成された突起部である。
(83a), (33n) are inner leads (32)
This is a protrusion formed on the side wall of the tip of ~(Hn).

上記のようなインナーリード(32)〜(Hn)を有す
るフレキシブルテープ(1)に半導体チップ(11)を
実装するには、先ず各インナーリード(32)〜(32
n)を第2図に矢印で示すように工具等(7)で挾み、
90″ねじって突起部(33)〜(Ban)を下に向け
る。ついでフレキシブルテープ(1)のデバイスホール
(2)内に半導体チップ(11)を配設し、ボンディン
グツール(8〉により半導体チップ(11)の電極(1
2)とインナーリード(82)〜(8,2n)とを1本
ずつボンディングする。
In order to mount the semiconductor chip (11) on the flexible tape (1) having the inner leads (32) to (Hn) as described above, first, each of the inner leads (32) to (32)
n) with a tool (7) as shown by the arrow in Figure 2,
Twist 90" so that the protrusions (33) to (Ban) face down. Next, place the semiconductor chip (11) in the device hole (2) of the flexible tape (1), and use the bonding tool (8>) to attach the semiconductor chip (11). (11) Electrode (1
2) and inner leads (82) to (8, 2n) one by one.

このようにしてボンディングが終了すると、第3図に示
すようにインナーリード(32)〜(32n)の曲りが
そのままボンディング面とフレキシブルテープ面との高
さの差(従来のフォーミング深さh)を形成するため、
フォーミング量を正確かつ均一に制御することができる
。なお、インナーリード(32)〜(32n)を90″
ねじると塑性変形するため、スプリングバックを生じる
ことはない。
When the bonding is completed in this way, the bends of the inner leads (32) to (32n) directly reduce the difference in height between the bonding surface and the flexible tape surface (conventional forming depth h), as shown in Figure 3. to form
The amount of forming can be controlled accurately and uniformly. In addition, the inner leads (32) to (32n) are 90″
Since it deforms plastically when twisted, it does not cause springback.

上記の説明ではインナーリード(32)〜(32n)を
手作業でねじり、1本ずつボンディングする場合につい
て述べたが、多量生産を行なう場合はインナーリード(
32)〜(82n)のねじりを自動化し、多数の電極(
12〉とインナーリード(32)のボンディングを同時
に行なうこともできる。
In the above explanation, we have described the case where the inner leads (32) to (32n) are manually twisted and bonded one by one.
32) to (82n) are automated, and a large number of electrodes (
12> and the inner lead (32) can be bonded at the same time.

また、インナーリード(32)〜(32n)の先端部側
壁に突起部(33)〜(33n)を設けた場合を示した
が、この位置と対向する半導体チップ(11)側の電極
(12)上にバンプを設けてもよい。
In addition, although a case is shown in which protrusions (33) to (33n) are provided on the side walls of the tip portions of the inner leads (32) to (32n), the electrodes (12) on the semiconductor chip (11) side opposite to these positions A bump may be provided on the top.

[発明の効果] 以上詳記したように、本発明はフレキシブルテ−プのイ
ンナーリードをフォーミング深さに相当する量だけそれ
ぞれ同方向に曲げて形成し、このインナーリードを90
°ねじって半導体チップの電極に接続するようにしたの
で、フォーミング量を正確にかつ均一に保持することが
できる。
[Effects of the Invention] As detailed above, the present invention forms the inner leads of a flexible tape by bending them in the same direction by an amount corresponding to the forming depth, and
Since it is connected to the electrode of the semiconductor chip by twisting, the amount of forming can be maintained accurately and uniformly.

このため、エツジショートが発生したりインナーリード
に亀裂や破断を生ずるおそれがなく、またスプリングバ
ックによる加工戻りが発生することもないので、初期接
続性が良好で信頼性の高い半導体装置を得ることができ
る。
Therefore, there is no risk of edge shorting or cracking or breakage of the inner leads, and there is no possibility of unprocessing due to springback, so it is possible to obtain a highly reliable semiconductor device with good initial connectivity. I can do it.

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

第1図は本発明実施例の模式的平面図、第2図はそのボ
ンディング作用を示す斜視図、第3図はボンディング後
の状態を示す斜視図、第4図は従来のフレキシブルテー
プのインナーリードと半導体チップの電極とのボンディ
ングの状態を示す斜視図、第5図、第6図は従来の問題
点を説明するための模式図である。 (1):フレキシブルテープ、(31) 、 (31a
) 、 (31n) :リード、(32) 、 (32
a) 、 (32n) :インナーリード、(11) 
:半導体チップ、 (12) :電極。
Fig. 1 is a schematic plan view of an embodiment of the present invention, Fig. 2 is a perspective view showing the bonding action, Fig. 3 is a perspective view showing the state after bonding, and Fig. 4 is the inner lead of a conventional flexible tape. FIGS. 5 and 6 are perspective views showing the state of bonding between the semiconductor chip and the electrodes of the semiconductor chip, and FIGS. 5 and 6 are schematic diagrams for explaining the conventional problems. (1): Flexible tape, (31), (31a
), (31n): lead, (32), (32
a), (32n): Inner lead, (11)
: Semiconductor chip, (12) : Electrode.

Claims (2)

【特許請求の範囲】[Claims] (1)デバイスホールに配設した半導体チップの電極に
接続される複数のインナーリードを備えたフレキシブル
テープにおいて、 前記インナーリードをデバイスホール内においてフォー
ミング深さに相当する量だけそれぞれ同方向に曲げて形
成したことを特徴とするフレキシブルテープ。
(1) In a flexible tape equipped with a plurality of inner leads connected to electrodes of a semiconductor chip arranged in a device hole, each of the inner leads is bent in the same direction within the device hole by an amount corresponding to the forming depth. A flexible tape characterized by a formed.
(2)フレキシブルテープのデバイスホールに形成され
た複数のインナーリードを半導体チップの電極に接続し
てなる半導体装置において、 前記デバイスホール内においてフォーミング深さに相当
する量だけそれぞれ同方向に曲げて形成されたインナー
リードを90゜ねじり、該インナーリードを前記デバイ
スホールに配設された半導体チップの電極にそれぞれ接
続したことを特徴とする半導体チップの実装構造。
(2) In a semiconductor device in which a plurality of inner leads formed in a device hole of a flexible tape are connected to electrodes of a semiconductor chip, the inner leads are formed by bending each inner lead in the same direction by an amount corresponding to the forming depth within the device hole. A semiconductor chip mounting structure characterized in that the inner leads are twisted by 90 degrees and the inner leads are respectively connected to electrodes of the semiconductor chip disposed in the device hole.
JP2028471A 1990-02-09 1990-02-09 Flexible tape and mounting structure of semiconductor chip Pending JPH03233950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2028471A JPH03233950A (en) 1990-02-09 1990-02-09 Flexible tape and mounting structure of semiconductor chip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2028471A JPH03233950A (en) 1990-02-09 1990-02-09 Flexible tape and mounting structure of semiconductor chip

Publications (1)

Publication Number Publication Date
JPH03233950A true JPH03233950A (en) 1991-10-17

Family

ID=12249568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2028471A Pending JPH03233950A (en) 1990-02-09 1990-02-09 Flexible tape and mounting structure of semiconductor chip

Country Status (1)

Country Link
JP (1) JPH03233950A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5836071A (en) * 1996-12-26 1998-11-17 Texas Instrument Incorporated Method to produce known good die using temporary wire bond, die attach and packaging
US7098078B2 (en) * 1990-09-24 2006-08-29 Tessera, Inc. Microelectronic component and assembly having leads with offset portions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7098078B2 (en) * 1990-09-24 2006-08-29 Tessera, Inc. Microelectronic component and assembly having leads with offset portions
US5836071A (en) * 1996-12-26 1998-11-17 Texas Instrument Incorporated Method to produce known good die using temporary wire bond, die attach and packaging

Similar Documents

Publication Publication Date Title
US6525406B1 (en) Semiconductor device having increased moisture path and increased solder joint strength
JPH1131776A (en) Semiconductor chip package
JPH098205A (en) Resin sealed semiconductor device
US6512288B1 (en) Circuit board semiconductor package
US5408127A (en) Method of and arrangement for preventing bonding wire shorts with certain integrated circuit components
JPH03233950A (en) Flexible tape and mounting structure of semiconductor chip
JPH0239097B2 (en)
JPH0344051A (en) Wire bonding method
US6404216B1 (en) Test contact
JPH0462865A (en) Semiconductor device and manufacture thereof
JPH0427148A (en) Lead frame for semiconductor device
JPH0744018Y2 (en) Projection electrode structure
KR950008849B1 (en) Semiconductor and manufacture method
JPS5844593Y2 (en) Beam lead type semiconductor device
JP2000156453A (en) Wire bonding connection structure and repairing method of wire
JPH0510366Y2 (en)
JPS62177953A (en) Lead frame
KR0180332B1 (en) Film carrier tape for semiconductor devices
KR100321149B1 (en) chip size package
JPS622560A (en) Resin-sealed type semiconductor device
JP2914577B2 (en) Method for manufacturing surface mount electronic device
JPS5874064A (en) Lead frame
JP2004221258A (en) Semiconductor device and its manufacturing method
JPH0519956Y2 (en)
JPH01286430A (en) Mounting method for semiconductor chip