JPH0561062A - Method for inspecting connecting state of liquid crystal display panel - Google Patents
Method for inspecting connecting state of liquid crystal display panelInfo
- Publication number
- JPH0561062A JPH0561062A JP24512991A JP24512991A JPH0561062A JP H0561062 A JPH0561062 A JP H0561062A JP 24512991 A JP24512991 A JP 24512991A JP 24512991 A JP24512991 A JP 24512991A JP H0561062 A JPH0561062 A JP H0561062A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- dummy
- conductive film
- external input
- crystal display
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0266—Marks, test patterns or identification means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/36—Assembling printed circuits with other printed circuits
- H05K3/361—Assembling flexible printed circuits with other printed circuits
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は熱硬化性異方性導電膜を
用いて液晶表示パネルにＴＡＢフィルムもしくは外部入
力ケーブル等の外部駆動回路の接続端子部を熱圧着接続
を行う場合の接続状態検査方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection state when a thermosetting anisotropic conductive film is used to perform thermocompression bonding of a connecting terminal portion of an external driving circuit such as a TAB film or an external input cable to a liquid crystal display panel. It relates to the inspection method.
【０００２】[0002]
【従来の技術】従来、熱可塑又は熱硬化性異方性導電膜
を用いて液晶表示パネルにＴＡＢフィルム及び外部入力
ケーブルを接続し、その接続状態を検査する場合、製品
を用いて行わず、ダミーの液晶表示パネルに導電膜を貼
り付け、さらにＴＡＢフィルムなどを圧着搭載した、擬
似圧着パネルを用いて破壊テストを行い導電膜の管理を
行っていた。この方式を図２に示す。１は液晶パネルの
端子上に設けられた異方性導電膜、２はＴＡＢフィルム
である。この方式を行う場合には、ダミー用パネルのコ
ストが高い、工程の中にダミーサンプルの作成が入るた
め作業時間が長くなる、などという不具合な点が有り、
又、実製品では行っていないため、製品に対して本質的
な管理検査の点では不充分であった。2. Description of the Related Art Conventionally, when a TAB film and an external input cable are connected to a liquid crystal display panel by using a thermoplastic or thermosetting anisotropic conductive film, and the connection state is inspected, the product is not used. A conductive film is attached to a dummy liquid crystal display panel, and a pseudo-pressure bonding panel in which a TAB film or the like is pressure-bonded is used to perform a destructive test and manage the conductive film. This method is shown in FIG. Reference numeral 1 is an anisotropic conductive film provided on the terminals of the liquid crystal panel, and 2 is a TAB film. When this method is used, there are disadvantages that the cost of the dummy panel is high, the work time is long because the dummy sample is included in the process,
In addition, since it was not performed on the actual product, it was insufficient in terms of essential control inspection for the product.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、従来
技術が有していた前述の欠点を解消しようとするもので
ある。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art.
【０００４】[0004]
【課題を解決するための手段】本発明は前述の問題点を
解決すべくなされたものであり、液晶表示パネルと外部
駆動回路とを異方性導電膜を用いて導電接着接続を行
い、その接続状態を検査する方法において、異方性導電
膜を介して液晶パネル上の一部の端子にダミーの外部駆
動回路の端子部を接続したものを検査することにより接
続状態を検査することを特徴とする接続状態検査方法を
提供するものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, in which a liquid crystal display panel and an external driving circuit are electrically conductively bonded using an anisotropic conductive film. In the method of inspecting the connection state, the connection state is inspected by inspecting a dummy external drive circuit terminal part connected to a part of terminals on the liquid crystal panel through an anisotropic conductive film. And a connection state inspection method.
【０００５】これによれば、熱可塑、熱硬化性異方性導
電膜を用いて、ＴＡＢフィルム及び外部入力ケーブルを
液晶パネルに熱圧着接続する場合、導電膜の付着強度、
粒子つぶれ、粒子個数、導電膜厚み等の本質的な管理検
査を容易に行える。According to this, when a TAB film and an external input cable are thermocompression-bonded to a liquid crystal panel by using a thermoplastic or thermosetting anisotropic conductive film, the adhesion strength of the conductive film,
Essential management inspections such as crushing of particles, number of particles, and thickness of conductive film can be easily performed.
【０００６】本発明の用途としては、熱可塑又は熱硬化
性異方性導電膜を用いて液晶表示パネルに、ＴＡＢフィ
ルム又は外部入力ケーブルなどを熱圧着接続する場合、
異方性導電膜の接続状態を管理することに使用できる。
この種の導電膜では圧着条件のバラツキなどによって接
続状態に悪影響を及ぼす場合が多く、定期的に管理する
ことが必要であるが、ダミーパネルを用いるような場合
は、コストと時間がかかる上に特に本質的な管理を行っ
ているわけではない。本発明は液晶パネルにプリント基
板を接続する場合を含め、この種の導電膜を用いる場合
のすべてに応用できる。As an application of the present invention, when a TAB film or an external input cable is thermocompression-bonded to a liquid crystal display panel using a thermoplastic or thermosetting anisotropic conductive film,
It can be used to manage the connection state of the anisotropic conductive film.
In this type of conductive film, the connection state is often adversely affected due to variations in pressure bonding conditions, and it is necessary to manage it regularly. However, when using a dummy panel, it is costly and time consuming. There is no particular essential control. The present invention can be applied to all cases where a conductive film of this type is used, including the case where a printed circuit board is connected to a liquid crystal panel.
【０００７】本発明によれば熱可塑、熱硬化性異方性導
電膜を用いて液晶表示パネルに熱圧着接続を行う場合、
実パネルを利用し、それにダミーの外部駆動回路の端子
部を接着して剥離試験その他の試験を行う。したがっ
て、この種の導電膜の付着力、粒子つぶれ、粒子数、膜
厚などの管理検査について本質的な管理を明確にかつ、
低コストにかつ、時間を短縮して行うことが可能であ
る。According to the present invention, when thermocompression bonding is performed on a liquid crystal display panel using a thermoplastic or thermosetting anisotropic conductive film,
Using a real panel, the terminals of the dummy external drive circuit are bonded to it, and a peeling test and other tests are performed. Therefore, it is necessary to clarify the essential control of the control inspection such as adhesion, particle crushing, number of particles, and film thickness of this kind of conductive film, and
It can be performed at low cost and in a short time.
【０００８】ダミーの外部駆動回路端子は、実際の駆動
回路とほぼ同形状の接続端子であるものが好ましい。特
に端子部分の幅やピッチを実際の駆動回路とそろえるこ
とが好ましい。また、もちろんダミーの端子は駆動回路
につながっている必要はなく、端子部分のみ検査し得る
ものであれば良い。ダミー端子は実駆動回路とは別個の
ものでも良いし、実駆動回路の一部に付属したものでも
良い。The dummy external drive circuit terminal is preferably a connection terminal having substantially the same shape as the actual drive circuit. In particular, it is preferable to match the width and pitch of the terminal portion with the actual driving circuit. Also, of course, the dummy terminals do not have to be connected to the drive circuit, and it is sufficient that only the terminal portions can be inspected. The dummy terminal may be separate from the actual drive circuit or may be attached to a part of the actual drive circuit.
【０００９】[0009]
【実施例】図１に示したように、液晶表示パネルやプリ
ントサーキットボードの外部入力リード端子上全面に熱
可塑性異方性導電膜１を貼付け、外部入力リード端子と
整合させて、ＴＡＢフィルム２を搭載する場合に生じる
未搭載部分（間隔）に前もってダミー外部入力リード端
子を任意数パターニングし、その部分に、間隔に合った
寸法に切断したダミーＴＡＢフィルム３のリード端子を
熱圧着接続した。その後このダミー外部入力リード端子
に接続されたダミーＴＡＢフィルム３を用いて、付着強
度、粒子つぶれ、粒子数、導電膜厚み、外部入力リード
端子形状などを調査した。本発明は従来ダミー液晶表示
パネルを用いてプロセスの間で行っていた管理を製品自
体によって行えるという本質的な管理と時間短縮を行
え、かつ低コストで行えるという特徴がある。EXAMPLE As shown in FIG. 1, a thermoplastic anisotropic conductive film 1 was attached on the entire surface of an external input lead terminal of a liquid crystal display panel or a printed circuit board, aligned with the external input lead terminal, and a TAB film 2 was formed. An arbitrary number of dummy external input lead terminals were patterned in advance in the unmounted portion (spacing) that occurs when mounting the, and the lead terminals of the dummy TAB film 3 cut into a size matching the spacing were thermocompression bonded to the portion. Then, using the dummy TAB film 3 connected to this dummy external input lead terminal, the adhesion strength, particle crushing, number of particles, conductive film thickness, external input lead terminal shape, etc. were investigated. The present invention is characterized in that it is possible to perform the essential management that the product itself can perform the management that was conventionally performed during the process using the dummy liquid crystal display panel, the time can be shortened, and the cost can be reduced.
【００１０】[0010]
【発明の効果】本発明は、熱可塑及び熱硬化性異方性導
電膜の熱圧着接続後の導電膜のすべての管理を行う上で
本質的であり、低コストであり、時間短縮であるという
効果を有する。特に外部入力ケーブル（ＴＡＢフィルム
など）を液晶表示パネルやプリントサーキットボードに
異方性導電膜を用いて接続する場合に、本発明を用いる
場合は製品に対して高い信頼性を得るという効果も認め
られる。INDUSTRIAL APPLICABILITY The present invention is essential for controlling all the conductive films after thermocompression bonding of thermoplastic and thermosetting anisotropic conductive films, and is low cost and time saving. Has the effect. In particular, when an external input cable (TAB film or the like) is connected to a liquid crystal display panel or a printed circuit board by using an anisotropic conductive film, the effect of obtaining high reliability for the product is recognized when the present invention is used. Be done.
【図１】本発明の接続状態検査方法を示す斜視図。FIG. 1 is a perspective view showing a connection state inspection method of the present invention.
【図２】従来の接続状態検査方法を示す斜視図。FIG. 2 is a perspective view showing a conventional connection state inspection method.
【符号の説明】 １ 異方性導電膜 ２ ＴＡＢフィルム ３ ダミーＴＡＢフィルム[Explanation of symbols] 1 anisotropic conductive film 2 TAB film 3 dummy TAB film
Claims (1)
導電膜を用いて導電接着接続を行い、その接続状態を検
査する方法において、異方性導電膜を介して液晶パネル
上の一部の端子にダミーの外部駆動回路の端子部を接続
したものを検査することにより接続状態を検査すること
を特徴とする接続状態検査方法。1. A method for conducting conductive adhesive connection between a liquid crystal display panel and an external drive circuit using an anisotropic conductive film, and inspecting the connection state, wherein one layer is formed on the liquid crystal panel via the anisotropic conductive film. A connection state inspection method characterized by inspecting the connection state by inspecting a terminal of a dummy external drive circuit connected to a terminal of the section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24512991A JPH0561062A (en) | 1991-08-30 | 1991-08-30 | Method for inspecting connecting state of liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24512991A JPH0561062A (en) | 1991-08-30 | 1991-08-30 | Method for inspecting connecting state of liquid crystal display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0561062A true JPH0561062A (en) | 1993-03-12 |
Family
ID=17129062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24512991A Withdrawn JPH0561062A (en) | 1991-08-30 | 1991-08-30 | Method for inspecting connecting state of liquid crystal display panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0561062A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08294834A (en) * | 1995-04-13 | 1996-11-12 | Emag Mas Vertriebs & Service Gmbh | Machine tool with a plurality of spindles |
| KR100694656B1 (en) * | 1999-12-27 | 2007-03-13 | 삼성전자주식회사 | Display unit for liquid crystal display device |
-
1991
- 1991-08-30 JP JP24512991A patent/JPH0561062A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08294834A (en) * | 1995-04-13 | 1996-11-12 | Emag Mas Vertriebs & Service Gmbh | Machine tool with a plurality of spindles |
| KR100694656B1 (en) * | 1999-12-27 | 2007-03-13 | 삼성전자주식회사 | Display unit for liquid crystal display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19981112 |