JPH05113575A - Liquid crystal display panel and production thereof - Google Patents

Liquid crystal display panel and production thereof

Info

Publication number
JPH05113575A
JPH05113575A JP3275174A JP27517491A JPH05113575A JP H05113575 A JPH05113575 A JP H05113575A JP 3275174 A JP3275174 A JP 3275174A JP 27517491 A JP27517491 A JP 27517491A JP H05113575 A JPH05113575 A JP H05113575A
Authority
JP
Japan
Prior art keywords
wiring
liquid crystal
pads
signal
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.)
Granted
Application number
JP3275174A
Other languages
Japanese (ja)
Other versions
JP2907607B2 (en
Inventor
Hiroshi Maeda
宏 前田
Hidetsugu Yamamoto
英嗣 山元
Hiroshi Miyama
博 深山
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3275174A priority Critical patent/JP2907607B2/en
Publication of JPH05113575A publication Critical patent/JPH05113575A/en
Application granted granted Critical
Publication of JP2907607B2 publication Critical patent/JP2907607B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136259—Repairing; Defects
    • G02F1/136263—Line defects
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136259—Repairing; Defects
    • G02F1/136272—Auxiliary lines

Landscapes

  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PURPOSE:To relieve a disconnection defect by connecting a disconnected signal wiring to a wiring for relieving by a wire bond via pads electrically insulated from proximity wirings on the liquid crystal display panel. CONSTITUTION:The pads 1, 2 at both ends of the signal wiring 5 where the disconnection defect arises and the pads 3, 4 at both ends of the wiring 7 for relieving are respectively connected by a wire bond 18 via the island-shaped intermediate pads 1c, 1d and 2c, 2d for relieving disposed between the signal wirings in order to relieve the above-mentioned signal wiring 5. The shapes of the island-shaped intermediate pads 1c, 1d and 2c, 2d for relieving are specific and are different from the shape of the pads at both ends of the signal wiring 5. Since the wiring is executed by the wire bond 18, a crossing part 20 between the signal wiring 5 and the wiring 7 for relieving is extremely decreased in the probability of the shorting between the wirings and the capacity of the relieved signal wiring. Such decrease leads to a decrease in the generation probability of defects, signal delay and signal noises. The island-shaped intermediate pads 1c, 1d, 2c, 2d for relieving are easily identifiable and the workability of the wire bond 18 is improved.

Description

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

【０００１】[0001]

【産業上の利用分野】本発明は、液晶表示パネルとその
製造方法に関し、特に液晶表示パネルの欠陥救済に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display panel and a method of manufacturing the same, and more particularly to defect relief of the liquid crystal display panel.

【０００２】[0002]

【従来の技術】近年、液晶表示パネルは大容量・大画面
表示に向けてのアプローチが活発である。そして、広範
囲の普及を図るため、低価格化の実現が広く求められて
いる。2. Description of the Related Art In recent years, liquid crystal display panels have been actively approached for large-capacity / large-screen display. Further, in order to popularize a wide range, realization of low price is widely demanded.

【０００３】しかし、大画面にわたり全く欠陥の無いパ
ネルを製造することは、極めて困難であり、歩留りの低
下・製造コスト高という問題がある。そこで、欠陥部分
を救済する方法が各種取られている。（図３）に救済手
順の概略を示す。液晶パネル作成後、画像表示領域内を
構成する信号配線の電気的な断線を検査する。次に、断
線箇所の救済の可否を判断し、救済可能な液晶表示パネ
ルについては、救済作業を行なう。再度検査を実施し、
欠陥部分が救済されたことを確認、液晶表示パネルが完
成する。However, it is extremely difficult to manufacture a panel having no defects over a large screen, and there are problems that the yield is low and the manufacturing cost is high. Therefore, various methods for relieving the defective portion are taken. The outline of the rescue procedure is shown in FIG. After the liquid crystal panel is created, the signal lines constituting the image display area are inspected for electrical breaks. Next, it is determined whether or not the broken portion can be repaired, and the repair work is performed on the liquid crystal display panel that can be repaired. Re-inspect,
After confirming that the defective portion has been repaired, the liquid crystal display panel is completed.

【０００４】（図２）は液晶表示パネルの構成を示す概
略図で、従来の液晶表示パネルの欠陥を救済する方法の
一例である。FIG. 2 is a schematic diagram showing the structure of a liquid crystal display panel, which is an example of a method for repairing defects in a conventional liquid crystal display panel.

【０００５】液晶パネル作成後、画像表示領域９内を構
成する信号配線１９の電気的な断線を検査し、断線を検
出した信号配線１５（以降、被救済信号配線１５と称す
る）は、断線箇所１６から先が駆動回路８より切り放さ
れ表示欠陥となる。そこで、被救済信号配線１５両端の
パッド１１、１２と、救済用配線１７に接続したパッド
１３、１４をそれぞれ、ワイヤーボンド１８により接続
する。これにより、欠陥箇所１６から先もパッド１２、
１４、救済用配線１７、パッド１３、１１を通して駆動
回路８と接続し、画面表示が可能となる。After the liquid crystal panel is produced, the signal wirings 19 constituting the image display area 9 are inspected for electrical disconnection, and the signal wirings 15 (hereinafter, referred to as the signal wirings 15 to be repaired), which have detected the disconnection, are disconnected. The portion beyond 16 is cut off from the drive circuit 8 and becomes a display defect. Therefore, the pads 11 and 12 at both ends of the signal line 15 to be repaired and the pads 13 and 14 connected to the repair wiring 17 are connected by wire bonds 18, respectively. As a result, even after the defective portion 16, the pad 12,
The screen can be displayed by connecting to the drive circuit 8 through 14, the relief wiring 17, and the pads 13 and 11.

【０００６】[0006]

【発明が解決しようとする課題】しかしながら、上記の
従来例では、信号配線と救済用配線のクロス箇所２０が
多いため、配線間ショートが発生しやすかったり、被救
済信号配線の容量が大きくなり信号遅延や信号ノイズが
増大するといった問題がある。特に１０インチ以上の大
型液晶表示パネルでは、前述のクロス箇所が非常に多
く、配線間ショートや被救済信号配線の容量は、液晶表
示パネルを救済する上で大きな問題となっている。However, in the above-described conventional example, since there are many cross points 20 between the signal wiring and the relief wiring, a short circuit between wirings easily occurs or the capacity of the signal wiring to be rescued becomes large, and There is a problem that delay and signal noise increase. In particular, in a large-sized liquid crystal display panel of 10 inches or more, the above-mentioned cross points are very large, and short-circuiting between wirings and the capacity of the signal wiring to be repaired pose a serious problem in repairing the liquid crystal display panel.

【０００７】本発明は、上記従来の問題点を解決するも
のであり、信号配線と救済用配線のクロス箇所を必要最
低限にし、配線間ショートおよび被救済信号配線の容量
を低減できる液晶表示パネルとその救済方法を提供する
ことを目的とするものである。The present invention solves the above-mentioned problems of the prior art, and a liquid crystal display panel capable of minimizing the cross points between the signal wiring and the relief wiring and reducing the short circuit between the wiring and the capacitance of the signal wiring to be rescued. The purpose is to provide a method of remedy.

【０００８】[0008]

【課題を解決するための手段】この目的を達成するため
本発明は、液晶表示パネル上に、特有の形状をもつ複数
の島状の救済用中間パッドを形成し、これらを介して被
救済信号配線と救済用配線をワイヤーボンドで接続する
ことにより、液晶表示パネルを救済するものである。In order to achieve this object, the present invention forms a plurality of island-shaped rescue intermediate pads having a unique shape on a liquid crystal display panel, through which a signal to be rescued is provided. The liquid crystal display panel is relieved by connecting the wiring and the relief wiring with a wire bond.

【０００９】[0009]

【作用】前記のように構成された液晶表示パネルでは、
信号配線と救済用配線のクロス箇所は救済のためワイヤ
ーボンドした箇所だけとなり、クロス部での配線間ショ
ート発生は減少し、クロス部での被救済信号配線の容量
も小さくなり、信号遅延や信号ノイズの低減が可能であ
る。また、島状の中間パッドは特有の形状を持つため、
その識別が容易でワイヤーボンドの作業性が向上する。In the liquid crystal display panel configured as described above,
The cross points between the signal wiring and the relief wiring are only wire-bonded locations for relief, the occurrence of short circuits between wiring at the cross section is reduced, the capacity of the signal wiring to be rescued at the cross section is also reduced, and signal delay and signal delay It is possible to reduce noise. Also, since the island-shaped intermediate pad has a unique shape,
The identification is easy and the workability of wire bonding is improved.

【００１０】以上のように、本発明によれば、確実でか
つ簡便な救済が可能であり、欠陥救済率の向上が容易に
達成できるのである。As described above, according to the present invention, reliable and simple repair can be performed, and the defect repair rate can be easily improved.

【００１１】[0011]

【実施例】以下本発明の実施例について説明する。救済
手順の概略は、従来例と同様である。（図１）は本発明
の１実施例の液晶表示パネルの構成を示す概略図であ
る。EXAMPLES Examples of the present invention will be described below. The outline of the repair procedure is similar to that of the conventional example. (FIG. 1) is a schematic view showing a configuration of a liquid crystal display panel according to one embodiment of the present invention.

【００１２】液晶パネル作成後、画像表示領域内を構成
する信号配線の電気的な断線を検査し、断線を検出した
信号配線５（以降、被救済信号配線５と称する）は断線
箇所６から先が駆動回路８より切り放され表示欠陥とな
る。そこで、被救済信号配線５両端のパッド１、２と、
救済用配線７に接続したパッド３、４をそれぞれ、信号
配線とクロスせずに配置した島状の救済用中間パッド１
ｃ、１ｄと２ｃ、２ｄを介して、ワイヤーボンドにより
接続する。これにより、欠陥箇所６から先もパッド２、
２ｃ、２ｄ、４、救済用配線７、パッド３、１ｄ、１
ｃ、１を通して駆動回路８と接続し、画面表示が可能と
なる。After the liquid crystal panel is produced, the signal wirings constituting the image display area are inspected for electrical disconnection, and the signal wirings 5 (hereinafter referred to as "repaired signal wirings 5") in which the disconnection is detected start from the disconnection point 6. Is cut off by the drive circuit 8 and becomes a display defect. Therefore, the pads 1 and 2 at both ends of the signal line 5 to be repaired,
Island-shaped relief intermediate pad 1 in which pads 3 and 4 connected to relief wiring 7 are arranged without crossing signal wiring, respectively.
Connection is made by wire bonding via c, 1d and 2c, 2d. As a result, the pad 2,
2c, 2d, 4, relief wiring 7, pads 3, 1d, 1
By connecting to the drive circuit 8 through c and 1, it is possible to display a screen.

【００１３】また、島状の救済用中間パッド１ａ、１
ｂ、１ｃ、１ｄ、２ａ、２ｂ、２ｃ、２ｄは他のパッド
とは異なる特有の形状を有する。Further, island-shaped relief intermediate pads 1a, 1
b, 1c, 1d, 2a, 2b, 2c and 2d have a unique shape different from other pads.

【００１４】これにより、製造工程において、中間パッ
ドの認識が容易となり、生産性が大幅に向上する。As a result, the intermediate pad can be easily recognized in the manufacturing process, and the productivity is greatly improved.

【００１５】なお、島状の救済用中間パッドは複数回ワ
イヤーボンド可能な大きさであり、かつその配置間隔を
ワイヤーボンドの１ストロークより十分短い。また、ワ
イヤーボンドの際、救済用中間パッドは必要数のみ使用
し、全数使用する必要はないことはもちろんである。The island-shaped relief intermediate pad is large enough to be wire-bonded a plurality of times, and its arrangement interval is sufficiently shorter than one stroke of wire-bonding. In addition, in wire bonding, it is needless to say that only the necessary number of relief intermediate pads are used and it is not necessary to use all of them.

【００１６】[0016]

【発明の効果】以上のように本発明は、信号配線とクロ
スせずに配置した島状の救済用中間パッドを用いること
で、信号配線と救済用配線のクロス箇所を救済に必要な
最低限の個数にできる。特に１０インチ以上の大型液晶
表示パネルでは、従来に較べ、クロス箇所が著しく減少
し、配線間のショート発生率や配線容量の削減に効果が
ある。As described above, according to the present invention, by using the island-shaped relief intermediate pad arranged without crossing the signal wiring, the minimum cross point between the signal wiring and the relief wiring is required for the relief. It can be any number. In particular, in a large-sized liquid crystal display panel of 10 inches or more, the number of cross points is remarkably reduced as compared with the conventional case, and it is effective in reducing the occurrence rate of short circuits between wirings and the wiring capacity.

【００１７】また、島状の救済用中間パッドは複数回ワ
イヤーボンド可能な大きさであり、かつその配置間隔が
ワイヤーボンドの１ストロークより十分短いので、多数
本の欠陥配線の救済が可能である。Further, since the island-shaped relief intermediate pad has a size capable of being wire-bonded a plurality of times and the arrangement interval thereof is sufficiently shorter than one stroke of wire-bonding, it is possible to relieve a large number of defective wirings. ..

【００１８】さらに、救済用中間パッドの形状を他のパ
ッドとは異ならしめているため製造工程において、認識
が容易となり、生産性が大幅に向上する。Further, since the shape of the relief intermediate pad is different from that of the other pads, it is easy to recognize in the manufacturing process, and the productivity is greatly improved.

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

【図１】本発明の実施例の液晶表示パネルの構成図であ
る。FIG. 1 is a configuration diagram of a liquid crystal display panel according to an embodiment of the present invention.

【図２】本発明の従来例の液晶表示パネルの構成図であ
る。FIG. 2 is a configuration diagram of a conventional liquid crystal display panel of the present invention.

【図３】液晶表示パネルの救済手順の概略図である。FIG. 3 is a schematic diagram of a rescue procedure for a liquid crystal display panel.

【符号の説明】[Explanation of symbols]

１、２ 被救済信号配線パッド １ａ、１ｂ、１ｃ、１ｄ、２ａ、２ｂ、２ｃ、２ｄ 救
済用中間パッド ３、４ 救済用配線パッド ５ 被救済信号配線 ６ 断線箇所 ７ 救済用配線 ８ 駆動回路 ９ 画素部 １１、１２ 被救済信号配線パッド １３、１４ 救済用配線パッド １５ 被救済信号配線 １６ 断線箇所 １７ 救済用配線 １８ ワイヤーボンド １９ 信号配線 ２０ 信号配線と救済用配線のクロス箇所1, 2 Relief signal wiring pad 1a, 1b, 1c, 1d, 2a, 2b, 2c, 2d Relief intermediate pad 3, 4 Relief wiring pad 5 Relief signal wiring 6 Disconnection location 7 Relief wiring 8 Drive circuit 9 Pixel part 11, 12 Relief signal wiring pad 13, 14 Relief wiring pad 15 Relief signal wiring 16 Disconnection location 17 Relief wiring 18 Wire bond 19 Signal wiring 20 Cross location of signal wiring and relief wiring

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 液晶表示パネル画像表示領域外のガラス
基板上に、近接する配線と電気的に絶縁した導電性材料
からなる複数のパッドを有することを特徴とする液晶表
示パネル。1. A liquid crystal display panel, comprising a plurality of pads made of a conductive material electrically insulated from adjacent wirings on a glass substrate outside the image display area of the liquid crystal display panel. 【請求項２】 複数のパッド形状が他のパッド形状と異
なることを特徴とする請求項１記載の液晶表示パネル。2. The liquid crystal display panel according to claim 1, wherein a plurality of pad shapes are different from other pad shapes. 【請求項３】 請求項１記載の液晶パネル作成後、画像
表示領域内を構成する信号配線のうち電気的に断線して
いる信号配線を検出し、前記断線している信号配線の駆
動回路側に接続している導電性パッドと救済用配線に接
続した導電性パッドを、前記断線している信号配線の駆
動回路とは反対側に接続している導電性パッドと前記救
済用配線に接続した別の導電性パッドを、それぞれワイ
ヤーボンディングで接続することを特徴とする液晶表示
パネル製造方法。3. After the liquid crystal panel according to claim 1, the electrically disconnected signal wiring is detected among the signal wirings constituting the image display area, and the drive circuit side of the disconnected signal wiring is detected. And the conductive pad connected to the relief wiring are connected to the conductive pad connected to the side opposite to the drive circuit of the disconnected signal wiring and the relief wiring. A method for manufacturing a liquid crystal display panel, wherein different conductive pads are connected by wire bonding.
JP3275174A 1991-10-23 1991-10-23 Liquid crystal display panel and manufacturing method thereof Expired - Fee Related JP2907607B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3275174A JP2907607B2 (en) 1991-10-23 1991-10-23 Liquid crystal display panel and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3275174A JP2907607B2 (en) 1991-10-23 1991-10-23 Liquid crystal display panel and manufacturing method thereof

Publications (2)

Publication Number Publication Date
JPH05113575A true JPH05113575A (en) 1993-05-07
JP2907607B2 JP2907607B2 (en) 1999-06-21

Family

ID=17551702

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3275174A Expired - Fee Related JP2907607B2 (en) 1991-10-23 1991-10-23 Liquid crystal display panel and manufacturing method thereof

Country Status (1)

Country Link
JP (1) JP2907607B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002023132A (en) * 2000-04-06 2002-01-23 Chi Mei Electronics Corp Liquid crystal display member having defect repairing function
JP2007241289A (en) * 2006-03-08 2007-09-20 Samsung Electronics Co Ltd Display apparatus and manufacturing method thereof
CN103325327A (en) * 2013-06-20 2013-09-25 深圳市华星光电技术有限公司 Display panel and detecting line and detecting method for display panel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002023132A (en) * 2000-04-06 2002-01-23 Chi Mei Electronics Corp Liquid crystal display member having defect repairing function
JP2007241289A (en) * 2006-03-08 2007-09-20 Samsung Electronics Co Ltd Display apparatus and manufacturing method thereof
CN103325327A (en) * 2013-06-20 2013-09-25 深圳市华星光电技术有限公司 Display panel and detecting line and detecting method for display panel
WO2014201729A1 (en) * 2013-06-20 2014-12-24 深圳市华星光电技术有限公司 Display panel, detection circuit for display panel and detection method therefor
CN103325327B (en) * 2013-06-20 2016-03-30 深圳市华星光电技术有限公司 The detection line of a kind of display panel, display panel

Also Published As

Publication number Publication date
JP2907607B2 (en) 1999-06-21

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