JPS5927560A - Mounting method for ic chip - Google Patents

Mounting method for ic chip

Info

Publication number
JPS5927560A
JPS5927560A JP57135933A JP13593382A JPS5927560A JP S5927560 A JPS5927560 A JP S5927560A JP 57135933 A JP57135933 A JP 57135933A JP 13593382 A JP13593382 A JP 13593382A JP S5927560 A JPS5927560 A JP S5927560A
Authority
JP
Japan
Prior art keywords
chip
pattern
substrate
board
contact
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
JP57135933A
Other languages
Japanese (ja)
Inventor
Osamu Sugano
修 菅野
Takayuki Yamaguchi
隆行 山口
Yasuhiko Takamatsu
恭彦 高松
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP57135933A priority Critical patent/JPS5927560A/en
Publication of JPS5927560A publication Critical patent/JPS5927560A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/52Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
    • H01L23/538Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
    • H01L23/5385Assembly of a plurality of insulating substrates
    • 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
    • H01L2924/0001Technical content checked by a classifier
    • H01L2924/0002Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

PURPOSE:To prevent the contact of a conductor pattern with the back surface of an IC chip and the occurrence of the erroneous operation of an IC chip by positioning the chip so that the chip may not be disposed on the pattern. CONSTITUTION:A ceramic substrate 6 and a printed circuit board 5 are secured on a supporting plate 7 so that the interval between the substrate 6 and the board 5 becomes slightly wide, and when a tape carrier 9 is mounted by outer lead bonding over the substrate 6 and the board 5, an IC chip 8 is positioned so that the chip 8 is disposed at the interval between the substrate 6 and the board 5. Even if force is applied to the carrier 9 from above so that the chip 8 moves downwardly, the chip 8 may not contact with the common electrode or other electrode pattern on the substrate 6 nor wiring pattern on the plate 7.

Description

【発明の詳細な説明】 本発明は、サーマルヘッド、ディスプレイ、またはセン
サアレイなどの電子機器において、テープキャリア方式
によりICチップを実装する方法に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for mounting an IC chip using a tape carrier method in an electronic device such as a thermal head, a display, or a sensor array.

サーマルヘッド等の電子機器のように、露出した導線パ
ターンを有する電子機器では駆動回路としてのIC(S
SI、MSI、LSIなどの集積回路)を実装する方法
としてテープキャリア方式が多く使用されている。
In electronic devices with exposed conductor patterns, such as thermal heads, IC (S
The tape carrier method is often used as a method for mounting integrated circuits such as SI, MSI, and LSI.

チーズキャリア方式はフィルムキャリア方式または”l
’AB方式とも呼ばれ、まずポリイミドなどからなるテ
ープ基材の表面に導体のリードがパターン形成されたテ
ープキャリアのデバイス穴において、リードの一端とI
Cチップのパッド上のバンプとの間でボンデインク(イ
ンナーリードボンデインク)を施し、次にそのテープキ
ャリアを必要に応じて所定の形状に打ち抜いた後、サー
マルヘッド等の電子機器の電極パターンなどとそのテー
プキャリアのリードの他端との間でボンディング(アウ
ターリードボンデインク)を施すものである。この方式
は、インナーリードボンデインクもアウターリードボン
デインクも共に高精度に。
The cheese carrier method is a film carrier method or
Also called the 'AB method, first, one end of the lead and the I
Bonde ink (inner lead bonde ink) is applied between the bumps on the pads of the C chip, and then the tape carrier is punched out into a predetermined shape as required, and then used as an electrode pattern for electronic devices such as thermal heads. Bonding (outer lead bonding ink) is performed between the tape carrier and the other end of the lead. This method provides high precision for both inner lead bonding ink and outer lead bonding ink.

しかも一括ボンデイングで行なうことができるので、組
立工程の高能率化、低コスト化及び高密度実装化を同時
に実現できる利点を有している。
Moreover, since it can be performed by batch bonding, it has the advantage of simultaneously realizing high efficiency, low cost, and high-density packaging in the assembly process.

ところで、発熱抵抗体を高密度に配列したサーマルヘッ
ドでは、駆動回路としてのICを発熱抵抗体配列の長手
方向に沿ってその両側に配置することが行なわれている
。その場合1発熱抵抗体が形成されているセラミック基
板上の電極パターンは、例えば第1図に示されるように
、各発熱抵抗体1の一端と駆動回路用ICとを接続する
一部の電極2と、各発熱抵抗体1の他端に共通に接続さ
れ発熱抵抗体1を通電加熱させる電源を供給する共通電
極3とが交互にパターン化されて形成されている。
Incidentally, in a thermal head in which heat generating resistors are arranged in a high density arrangement, ICs serving as drive circuits are arranged on both sides of the heat generating resistor array along the longitudinal direction thereof. In that case, the electrode pattern on the ceramic substrate on which the heating resistors 1 are formed is, for example, as shown in FIG. and a common electrode 3 which is commonly connected to the other end of each heat generating resistor 1 and supplies a power source for energizing and heating the heat generating resistor 1 are formed in an alternating pattern.

このサーマルヘッドに駆動回路用ICチップを実装する
には、第2図のように、入出力コネクタにつながる。配
線パターン4を有するプリント配線板5を第1図のセラ
ミック基板6と平行に並べて支持板7上に固定し、IC
チップ8をインナーリードポンディグによりボンディン
グし所定形状に打ち抜かれたテープキャリア9をセラミ
ック基板6とプリント配線板5とに跨がるように置き、
チーズキャリア9の一方のアウターリード1oと電極2
との間にアウターリードボンディングを施し、他方のア
ウターリード11とプリント配線板5上の配線パターン
4との間にもアウターリードボンディングを施す。
To mount a drive circuit IC chip on this thermal head, it is connected to an input/output connector as shown in FIG. A printed wiring board 5 having a wiring pattern 4 is arranged in parallel with the ceramic substrate 6 of FIG. 1 and fixed on a support plate 7, and an IC
The chip 8 is bonded by inner lead bonding, and a tape carrier 9 punched into a predetermined shape is placed so as to straddle the ceramic substrate 6 and the printed wiring board 5.
One outer lead 1o of cheese carrier 9 and electrode 2
Outer lead bonding is performed between the other outer lead 11 and the wiring pattern 4 on the printed wiring board 5.

しかしながら、このような従来の方法によりICチップ
が 実装されたサーマルヘッドでは、第2図及び第3図
(第2図中のA−A線断面図)に示されるように、IC
チップ8が共通電極3上に位置し、ICチップ8の裏面
が共通電極3に対向するため、ICチップ8の裏面が共
通電極3に接触する可能性がある。そして1通常、IC
チップ8の裏面はグランドになっているため、動作中に
、そのICチップ8の裏面が発熱抵抗体1の通電加熱用
電源電圧が印加されている共通電極3に接触すると、I
Cチップ8が誤動作を起し、不良になる問題がある。
However, in a thermal head in which an IC chip is mounted using such a conventional method, as shown in FIGS. 2 and 3 (cross-sectional view taken along line A-A in FIG. 2),
Since the chip 8 is located on the common electrode 3 and the back surface of the IC chip 8 faces the common electrode 3, there is a possibility that the back surface of the IC chip 8 comes into contact with the common electrode 3. and 1 normal, IC
Since the back side of the chip 8 is grounded, if the back side of the IC chip 8 comes into contact with the common electrode 3 to which the power supply voltage for heating the heating resistor 1 is applied during operation, the I
There is a problem that the C chip 8 may malfunction and become defective.

このような問題は、ICチップ8がプリント配線板5の
配線パターン4上に位置している場合にも発生する。ま
た、サーマルヘッドに限らず、表面に形成された導線パ
ターンを有するディスプレイなどの他の電子機器におい
てもICチップをテープキャリア方式により実装する場
合には同様の問題が生じる。
Such a problem also occurs when the IC chip 8 is located on the wiring pattern 4 of the printed wiring board 5. Further, similar problems occur not only in thermal heads but also in other electronic devices such as displays having conductive wire patterns formed on the surface when IC chips are mounted using the tape carrier method.

本発明は、上記問題を解決するこきを目的さするもので
あって、ICチップが、共通電極その他の電極のパター
ンや配線パターンのような露出した導線パターン上に位
置しないようにICチップを位置決めすることにより、
ICチップ裏面と上記のような導線パターンとの接触を
防止し、もって上記目的を達成せんとするものである。
The present invention is aimed at solving the above-mentioned problem, and is aimed at positioning an IC chip so that it is not located on an exposed conductor pattern such as a common electrode or other electrode pattern or a wiring pattern. By doing so,
The purpose is to prevent the back surface of the IC chip from coming into contact with the conductor pattern as described above, thereby achieving the above object.

以下、本発明の一実施例について説明する。An embodiment of the present invention will be described below.

第4図は一実施例を示し、セラミック基板6とプリント
配線板5との間隔が第2図の従来例よりは若干広くなる
ように支持板7上に固定し、テープキャリア9をアウタ
ーリードボンディングによりセラミック基板6とプリン
ト配線板5とに跨って実装したとき、ICチップ8がセ
ラミック基板6とプリント配線板5との間隙に位置する
ようにICチップ8を配置したものである。
FIG. 4 shows an embodiment, in which the ceramic substrate 6 and the printed wiring board 5 are fixed on a support plate 7 so that the distance between them is slightly wider than that of the conventional example shown in FIG. The IC chip 8 is arranged so that when mounted across the ceramic substrate 6 and the printed wiring board 5, the IC chip 8 is located in the gap between the ceramic substrate 6 and the printed wiring board 5.

本実施例によれば、第4図及び第5図(第4図中のB−
B線断面図)から明らかなように、チーズキャリア9に
上方から力が加えられICチップ8が下方に移動する事
態が発生したとしても、ICチップ8はセラミック基板
6上の共通電極もしくは他の電極のパターンとも、また
はプリント配線板7上の配線パターンとも接触する虞れ
が全くなく、したがってそのような不慮の接触に起因す
るIcチップ8の誤動作は発生しない。
According to this embodiment, FIGS. 4 and 5 (B--B in FIG.
As is clear from the cross-sectional view taken along the line B), even if a force is applied to the cheese carrier 9 from above and the IC chip 8 moves downward, the IC chip 8 will not be connected to the common electrode on the ceramic substrate 6 or other There is no risk of contact with the electrode pattern or the wiring pattern on the printed wiring board 7, and therefore the Ic chip 8 will not malfunction due to such accidental contact.

以上のように、本発明は、テープキャリア方式によるI
Cチップの実装にあたり、ICチップが導線パターン上
に位置しないようにICチップを位置決めしたので、I
Cチップ裏面と導線パターンとの接触が防止され、その
ような接触によるICチップの誤動作が発生しないIc
チップ実装方法を達成することができる。
As described above, the present invention provides an I
When mounting the C chip, the IC chip was positioned so that it was not located on the conductor pattern, so the I
Ic that prevents contact between the back surface of the C chip and the conductor pattern, and prevents malfunction of the IC chip due to such contact.
A chip mounting method can be achieved.

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

第1図はサーマルヘッドにおけるセラミック基板上の発
熱抵抗体と電極のパターンの一例の一部を示す平面図、
第2図は第1図のセラミック基板に従来の方法によりI
Cチップを実装したサーマルヘッドの一部を1個の2−
グキャリアについてポル平面図、第3図はシ図における
A−A線断面図、第4図は第1図のセラミック基板に本
発明の一実施例の方法によりICチップを実装したす−
マルヘッドの一部を1個のテープキャリアについて示す
平面図、第5図は第4図のB−B線断面図である。 l・・・発熱抵抗体、 2・・・電極パターン、3・・
・共通電極パターン、 4・・・配線パターン、5・・
・プリント配線板、 6・・・セラミック基板、8・・
・ICチップ、  9・・・テープキャリア。 特許−出願人 株式会社 リコー
FIG. 1 is a plan view showing part of an example of a pattern of a heating resistor and electrodes on a ceramic substrate in a thermal head;
Figure 2 shows the ceramic substrate shown in Figure 1 being subjected to a conventional method.
A part of the thermal head with C chip mounted on one 2-
FIG. 3 is a cross-sectional view taken along line A-A in the diagram, and FIG. 4 is a diagram showing an IC chip mounted on the ceramic substrate of FIG. 1 by the method of one embodiment of the present invention.
FIG. 5 is a plan view showing a part of the multihead for one tape carrier, and FIG. 5 is a sectional view taken along the line B--B in FIG. 4. l...heating resistor, 2...electrode pattern, 3...
・Common electrode pattern, 4... Wiring pattern, 5...
・Printed wiring board, 6... Ceramic board, 8...
・IC chip, 9... tape carrier. Patent - Applicant Ricoh Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] (IIICチップをテープキャリアにボンディングし1
表面に導線パターンが露出した電子機器に上記テープキ
ャリアを実装する方法において、ICチップが上記導線
パターン上に位置しないようにICチップの位置決めを
行なうことを―徴とするICチップの実装方法。
(Bonding the IIIC chip to the tape carrier 1
A method for mounting an IC chip on an electronic device having a conductive wire pattern exposed on its surface, the method comprising: positioning the IC chip so that the IC chip is not located on the conductive wire pattern.
JP57135933A 1982-08-04 1982-08-04 Mounting method for ic chip Pending JPS5927560A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57135933A JPS5927560A (en) 1982-08-04 1982-08-04 Mounting method for ic chip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57135933A JPS5927560A (en) 1982-08-04 1982-08-04 Mounting method for ic chip

Publications (1)

Publication Number Publication Date
JPS5927560A true JPS5927560A (en) 1984-02-14

Family

ID=15163233

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57135933A Pending JPS5927560A (en) 1982-08-04 1982-08-04 Mounting method for ic chip

Country Status (1)

Country Link
JP (1) JPS5927560A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01170028A (en) * 1987-12-25 1989-07-05 Hitachi Ltd Semiconductor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01170028A (en) * 1987-12-25 1989-07-05 Hitachi Ltd Semiconductor device

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