JPH01142714A - Reflection type liquid crystal display panel - Google Patents
Reflection type liquid crystal display panelInfo
- Publication number
- JPH01142714A JPH01142714A JP62302223A JP30222387A JPH01142714A JP H01142714 A JPH01142714 A JP H01142714A JP 62302223 A JP62302223 A JP 62302223A JP 30222387 A JP30222387 A JP 30222387A JP H01142714 A JPH01142714 A JP H01142714A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- display panel
- crystal display
- correction
- signal line
- 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
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 46
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims abstract description 11
- 238000005476 soldering Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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
- G02F1/136272—Auxiliary lines
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、断線した信号線を容易に修正することができ
る反射型液晶表示パネルに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a reflective liquid crystal display panel in which broken signal lines can be easily repaired.
従来の技術
近年、産業機器の小型化にともない従来からの表示装置
に代わる薄型平面表示装置が要望されている。種々ある
平面表示装置の中で液晶を用いた表示装置は、消費電力
が少なく、フルカラー表示が容易である点などから注目
されている。テレビ受像機やＯＡ機器の表示装置に用い
るための高解像度液晶表示パネルを構成するためには液
晶表示パネル内の信号線数を増やし、また、信号線の幅
も細くしなければならない。しかし、このように信号線
数を増やし、信号線の幅も細くすると製造行程中の不良
による信号線の断線も増加してくる。2. Description of the Related Art In recent years, with the miniaturization of industrial equipment, there has been a demand for thin flat display devices to replace conventional display devices. Among various flat display devices, display devices using liquid crystals are attracting attention because they consume less power and can easily display full color. In order to construct a high-resolution liquid crystal display panel for use in display devices for television receivers and OA equipment, the number of signal lines in the liquid crystal display panel must be increased and the width of the signal lines must also be reduced. However, when the number of signal lines is increased and the width of the signal lines is made narrower, the number of signal line breaks due to defects during the manufacturing process increases.
信号線が断線すると、断線箇所から先には信号が供給さ
れな（なるため、表示画質の著しい低下をもたらす。従
って、これらの断線欠陥に対し欠陥の修正を行う必要が
ある。When a signal line is disconnected, no signal is supplied beyond the disconnection point, resulting in a significant deterioration in display image quality.Therefore, it is necessary to correct these disconnection defects.
第４図は従来の断線欠陥修正方法を示す構成図であり、
第５図は第４図の概略等価回路である（スイッチング素
子は図示せず）。第４図、第５図において、１は反射型
液晶表示パネル、４は端子電極部であり、５Ｉは断線欠
陥の修正用配線、５２は信号線の断線箇所を示している
。以上のような断線欠陥修正方法では、断線箇所５２を
含む信号線と接続されている端子電極部４のｅ部とｅ部
部、１部とｆ゛部に修正用配線５１をハンダ付けで接続
し、信号を信号線の両側より供給していた。第４図に示
した方法では、修正用配線５１を端子電極部４に直接接
続するように示したが、端子電極部４に接続用パッドを
設けておき、そこに修正用配線５１を接続する方法もあ
る。また、特開昭５９−２０８５８１号公報に見られる
ように液晶表示パネルとは別に修正用配線を形成した基
板を液晶表示パネルの周囲に設け、端子電極部と前記基
板上の修正用配線とを接続し、信号を断線部分に供給す
る方法も提案されている。FIG. 4 is a block diagram showing a conventional method for repairing disconnection defects.
FIG. 5 is a schematic equivalent circuit of FIG. 4 (switching elements are not shown). In FIGS. 4 and 5, 1 is a reflective liquid crystal display panel, 4 is a terminal electrode section, 5I is a wiring for repairing a disconnection defect, and 52 is a disconnection location of a signal line. In the method for repairing the disconnection defect as described above, the repair wiring 51 is connected by soldering to the e section, the e section, the 1 section, and the f' section of the terminal electrode section 4 which are connected to the signal line including the disconnection point 52. However, signals were supplied from both sides of the signal line. In the method shown in FIG. 4, the correction wiring 51 is shown to be directly connected to the terminal electrode part 4, but a connection pad is provided in the terminal electrode part 4, and the correction wiring 51 is connected thereto. There is a way. Furthermore, as seen in Japanese Patent Laid-Open No. 59-208581, a substrate on which wiring for correction is formed separately from the liquid crystal display panel is provided around the liquid crystal display panel, and the terminal electrode portion and the wiring for correction on the substrate are connected. A method of connecting and supplying a signal to the disconnected part has also been proposed.
発明が解決しようとする問題点
しかしながら、従来の断線欠陥の修正方法では修正用配
線５１をハンダ付けで端子電極部４に接続していたため
、液晶表示パネルが高解像度化され端子電極部４の間隔
が狭くなってくると修正用配線５１を接続することが困
難になる。また、ハンダ付けをやりやすくするために端
子電極部４の間隔を広げるように構成すると、液晶表示
パネル全体が大きくなるという問題点がある。修正用配
線を形成した基板を別に設ける方法では、端子電極部４
の間隔が狭くなってもワイヤーポンディング等を用いれ
ば接続することが可能であるが、余分な基板を設けるた
め液晶表示パネルの大きさが大きくなってしまう。Problems to be Solved by the Invention However, in the conventional method for repairing disconnection defects, the repair wiring 51 was connected to the terminal electrode section 4 by soldering. When the width becomes narrower, it becomes difficult to connect the correction wiring 51. Further, if the terminal electrode portions 4 are configured to have wider intervals to facilitate soldering, there is a problem that the entire liquid crystal display panel becomes larger. In the method of separately providing a board on which correction wiring is formed, the terminal electrode portion 4
Even if the distance between the two is narrower, it is possible to connect them by using wire bonding or the like, but the provision of an extra substrate increases the size of the liquid crystal display panel.
本発明はかかる点に鑑みてなされたもので、端子電極間
隔が密である反射型液晶表示パネルであっても端子電極
と補正用配線の接続が可能な小型。The present invention has been made in view of this point, and is compact enough to allow connection of terminal electrodes and correction wiring even in a reflective liquid crystal display panel in which the terminal electrodes are closely spaced.
低コストの反射型液晶表示パネルを提供することを目的
としている。The purpose is to provide a low-cost reflective liquid crystal display panel.
問題点を解決するための手段
本発明は上記した問題点を解決するために、反射型液晶
表示パネルを構成するアクティブマトリックス基板の裏
面に修正用配線パターンを複数本形成した修正用配線基
板を装着し、液晶パネル内で断線している信号線につい
て、断線している信号線に接続されている端子電極部と
修正用配線基板の配線パターンを反射型液晶表示パネル
の両側で接続し、断線している信号線に信号を供給する
ように構成したものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a method for mounting a correction wiring board in which a plurality of correction wiring patterns are formed on the back side of an active matrix substrate constituting a reflective liquid crystal display panel. However, regarding the disconnected signal line in the LCD panel, connect the terminal electrode connected to the disconnected signal line and the wiring pattern of the repair wiring board on both sides of the reflective LCD panel, and then repair the disconnected signal line. It is configured to supply a signal to the signal line connected to the terminal.
作用
本発明は上記した構成により、表示素子が高密度に形成
された反射型液晶表示パネルの端子電極部と修正用配線
パターンを接続することが可能であり、高解像度の反射
型液晶表示パネルの断線欠陥を修正することができる。Effect of the Invention With the above-described structure, the present invention can connect the terminal electrode portion of a reflective liquid crystal display panel in which display elements are formed in high density to the wiring pattern for correction, and can be applied to a high-resolution reflective liquid crystal display panel. Open circuit defects can be corrected.
しかも、修正用配線基板をアクティブマトリックス基板
の裏面に装着したため、反射型液晶表示パネルの小型化
、低コスト化を図ることが可能である。Moreover, since the correction wiring board is attached to the back surface of the active matrix board, it is possible to reduce the size and cost of the reflective liquid crystal display panel.
実施例
以下、本発明の一実施例の反射型液晶表示パネルについ
て図面を参照しながら説明する。EXAMPLE Hereinafter, a reflective liquid crystal display panel according to an example of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例における反射型液晶表示パネ
ルの構成図であり、第２図は第１図のＡ−Ａ’線におけ
る略断面図である。第２図では液晶表示パネルに反射型
のＴＦＴ素子素子液晶表示パネルを用いた場合を示して
いる。第１図、第２図において１は反射型液晶表示パネ
ル、２は修正用配線基板、３は修正用配線基板２に形成
した修正用配線パターン、４は外部の駆動回路と接続す
るための端子電極部、５ば端子電極部４が形成してあり
、反射型液晶表示パネル１を支持するための補助基板、
６は修正用配線パターン３と端子電極部４を接続するた
めの修正用配線、７はアクティブマトリックス基板、８
は共通電極基板、９はアクティブマトリックス基板７に
形成されている信号線、１０は偏光板、１）は導電性ゴ
ムコネクタ、１２はスイッチング素子、１３は金属反射
膜、１４は液晶である。FIG. 1 is a configuration diagram of a reflective liquid crystal display panel according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view taken along line AA' in FIG. 1. FIG. 2 shows a case where a reflective TFT element liquid crystal display panel is used as the liquid crystal display panel. In FIGS. 1 and 2, 1 is a reflective liquid crystal display panel, 2 is a wiring board for correction, 3 is a wiring pattern for correction formed on the wiring board for correction 2, and 4 is a terminal for connecting to an external drive circuit. an auxiliary substrate for supporting the reflective liquid crystal display panel 1;
6 is a correction wiring for connecting the correction wiring pattern 3 and the terminal electrode part 4; 7 is an active matrix substrate; 8
1 is a common electrode substrate, 9 is a signal line formed on the active matrix substrate 7, 10 is a polarizing plate, 1) is a conductive rubber connector, 12 is a switching element, 13 is a metal reflective film, and 14 is a liquid crystal.
本発明の一実施例では、第１図、第２図に示すように反
射型液晶表示パネル１のアクティブマトリックス基板７
の裏面に接着剤などを用いて修正用配線基板２を装着し
ている。修正用配線基板２には、絶縁性の高いガラスエ
ポキシ基板などを用い、修正用配線パターン３は、Ｃｕ
など導電性の良い金属をエツチングで形成する。また、
修正用配線パターン３は、信号が流れる経路を一つにす
るためにループにならないよう一部分を切断しである。In one embodiment of the present invention, as shown in FIGS. 1 and 2, an active matrix substrate 7 of a reflective liquid crystal display panel 1 is provided.
A correction wiring board 2 is attached to the back surface of the board using an adhesive or the like. The correction wiring board 2 is made of a highly insulating glass epoxy board, and the correction wiring pattern 3 is made of Cu.
Formed by etching a highly conductive metal such as. Also,
The correction wiring pattern 3 is partially cut off so as not to form a loop in order to unify the path through which the signal flows.
第３図は修正用配線パターン３と端子電極部４の接続を
説明するための概略等価回路であり、２１は断線箇所で
ある（ＴＦＴ素子は図示せず）。FIG. 3 is a schematic equivalent circuit for explaining the connection between the correction wiring pattern 3 and the terminal electrode section 4, and 21 is a disconnection point (TFT element is not shown).
反射型液晶表示パネル１を組み立て、補助基板５に取り
付けた後、端子電極部４の両端で導通検査を行い信号線
の断線検査を行う。そして、断線箇所２１を有する信号
線が検出されると、その信号線が接続されている端子電
極部４と修正用配線パターン３を端子電極部４の両側の
ａ−ａ’ 部、ｂ−ｂ’ 部やｃ−ｃ’ 部、ｄ−ｄ’
部で修正用配線６を用いて半田付けやワイヤーボンデ
ィングで接続する。このように構成することによって、
断線箇所２１から先には信号が供給されなかったものが
、端子電極部−修正用配線パターン一端子電極部−信号
線なる経路で信号が供給されることになり、反射型液晶
表示パネルの断線による表示欠陥の修正を行うことがで
きる。After the reflective liquid crystal display panel 1 is assembled and attached to the auxiliary substrate 5, a continuity test is performed at both ends of the terminal electrode section 4, and a disconnection test of the signal line is performed. When a signal line having a disconnection point 21 is detected, the terminal electrode section 4 to which the signal line is connected and the correction wiring pattern 3 are connected to the aa' section and bb section on both sides of the terminal electrode section 4. ' part, c-c' part, d-d'
At this point, connection is made by soldering or wire bonding using the correction wiring 6. By configuring like this,
Although no signal was supplied beyond the disconnection point 21, the signal is now supplied via the terminal electrode section - wiring pattern for correction - terminal electrode section - signal line, resulting in a disconnection of the reflective liquid crystal display panel. Display defects can be corrected by
発明の効果
以上の説明のように本発明は、反射型液晶表示パネルの
アクティブマトリックス基板の裏面に複数本の修正用パ
ターンを形成した修正用配線基板を装着し、反射型液晶
表示パぶル内で断線している信号線を液晶表示パネルの
両側で、その信号線が接続されている端子電極部と修正
用配線パターンを接続するように構成したことにより、
表示素子が高密度に形成され信号線の間隔が狭い反射型
液晶表示パネルであっても、断線した信号線の修正が可
能であり、反射型液晶表示パネルの歩留りを高めること
ができる。また、液晶表示パネル部分に修正用配線基板
を装着することにより、パネル全体の大きさが変わらず
反射型液晶表示パネルの大型化、コストアップが防げる
など実用上極めて有効である。Effects of the Invention As explained above, the present invention provides a correction wiring board on which a plurality of correction patterns are formed on the back side of an active matrix substrate of a reflective liquid crystal display panel. By configuring the signal line that was disconnected at the time to be connected to the terminal electrode part to which the signal line is connected on both sides of the liquid crystal display panel and the correction wiring pattern,
Even in a reflective liquid crystal display panel in which display elements are densely formed and signal lines are spaced narrowly, broken signal lines can be repaired, and the yield of the reflective liquid crystal display panel can be increased. In addition, by attaching a correction wiring board to the liquid crystal display panel, the overall size of the panel remains unchanged, and an increase in the size and cost of the reflective liquid crystal display panel can be prevented, which is extremely effective in practice.
第１図は本発明の一実施例による反射型液晶表示パネル
の平面図、第２図はその断面図、第３図は断線欠陥の修
正方法を説明するための概略等価回路図、第４図は従来
の断線欠陥の修正方法による反射型液晶表示パネルの平
面図、第５図は従来の断線欠陥の修正方法を説明するた
めの概略等価回路図である。
１・・・・・・反射型液晶表示パネル、２・・・・・・
修正用配線基板、３・・・・・・修正用配線パターン、
４・・・・・・端子電極部、５・・・・・・補助基板、
６・・・・・・修正用配線、７・・・・・・アクティブ
マトリックス基板、８・・・・・・共通基板、９・・・
・・・信号線、２１・・・・・・断線箇所。
代理人の氏名 弁理士 中尾敏男 はか１名／ −一一
次ｊＲｆＪ！浪晶表示バ木）：？−−−イｒト正λロ配
Ａ禰七】ｋ１２之第１図
第３図 ２肚−前穐箇所FIG. 1 is a plan view of a reflective liquid crystal display panel according to an embodiment of the present invention, FIG. 2 is a cross-sectional view thereof, FIG. 3 is a schematic equivalent circuit diagram for explaining a method for correcting disconnection defects, and FIG. 4 5 is a plan view of a reflective liquid crystal display panel according to a conventional method for correcting a disconnection defect, and FIG. 5 is a schematic equivalent circuit diagram for explaining the conventional method for correcting a disconnection defect. 1... Reflective liquid crystal display panel, 2...
Wiring board for correction, 3... Wiring pattern for correction,
4...Terminal electrode part, 5...Auxiliary board,
6... Wiring for correction, 7... Active matrix board, 8... Common board, 9...
...Signal line, 21...Disconnection point. Name of agent: Patent attorney Toshio Nakao / -11th jRfJ! Naniyoshi display bar tree):? ---Ito positive λ lo arrangement A 禰7] k12 no Fig. 1 Fig. 3 2nd abdomen - front axle part
Claims (3)
アクティブマトリックス基板と共通電極基板で液晶層を
挟持してなる反射型液晶表示パネルであって、前記アク
ティブマトリックス基板の裏面に修正用配線パターンを
複数本形成した修正用配線基板を装着し、液晶表示パネ
ル内で断線している信号線について、断線している信号
線に接続されている端子電極部と前記修正用基板内の前
記修正用配線パターンを反射型液晶表示パネルの両側で
接続して、断線している信号線の修正を行っていること
を特徴とする反射型液晶表示パネル。(1) A reflective liquid crystal display panel in which a liquid crystal layer is sandwiched between an active matrix substrate on which a metal reflective film is formed on the top surface of a switching element and a common electrode substrate, and a wiring pattern for correction is provided on the back surface of the active matrix substrate. When a plurality of correction wiring boards are installed and a signal line is broken in the liquid crystal display panel, the terminal electrode part connected to the broken signal line and the correction wiring in the correction board are attached. A reflective liquid crystal display panel characterized in that patterns are connected on both sides of the reflective liquid crystal display panel to correct disconnected signal lines.
との接続をワイヤーボンディング、またはハンダ付けで
行ったことを特徴とする特許請求の範囲第（１）項記載
の反射型液晶表示パネル。(2) A reflective liquid crystal display panel according to claim (1), wherein the terminal electrode portion and the correction wiring pattern in the correction substrate are connected by wire bonding or soldering. .
で構成されていることを特徴とする特許請求の範囲第（
１）項記載の反射型液晶表示パネル。(3) The switching element is a two-terminal element or TFT
Claim No. 1 is characterized in that it consists of (
1) The reflective liquid crystal display panel described in item 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62302223A JPH01142714A (en) | 1987-11-30 | 1987-11-30 | Reflection type liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62302223A JPH01142714A (en) | 1987-11-30 | 1987-11-30 | Reflection type liquid crystal display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01142714A true JPH01142714A (en) | 1989-06-05 |
Family
ID=17906430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62302223A Pending JPH01142714A (en) | 1987-11-30 | 1987-11-30 | Reflection type liquid crystal display panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01142714A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2752624A1 (en) * | 1996-07-11 | 1998-02-27 | Lg Electronics Inc | REPAIR SYSTEM FOR A LIQUID CRYSTAL DISPLAY |
| CN102169267A (en) * | 2011-05-23 | 2011-08-31 | 深圳市华星光电技术有限公司 | Flat display panel and repairing method thereof |
-
1987
- 1987-11-30 JP JP62302223A patent/JPH01142714A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2752624A1 (en) * | 1996-07-11 | 1998-02-27 | Lg Electronics Inc | REPAIR SYSTEM FOR A LIQUID CRYSTAL DISPLAY |
| CN102169267A (en) * | 2011-05-23 | 2011-08-31 | 深圳市华星光电技术有限公司 | Flat display panel and repairing method thereof |
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