JPH09311336A - Liquid crystal display device and its manufacture - Google Patents
Liquid crystal display device and its manufactureInfo
- Publication number
- JPH09311336A JPH09311336A JP12862996A JP12862996A JPH09311336A JP H09311336 A JPH09311336 A JP H09311336A JP 12862996 A JP12862996 A JP 12862996A JP 12862996 A JP12862996 A JP 12862996A JP H09311336 A JPH09311336 A JP H09311336A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- display device
- crystal display
- input electrode
- alignment film
- 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
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は液晶表示装置および
その製造方法に関し、更に詳しくは、基板上の入力電極
部にダミー電極を形成することにより、ラビング工程に
おける金属膜カスの発生を抑えて表示品質の安定化を図
った液晶表示装置およびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device and a method of manufacturing the same, and more particularly, a dummy electrode is formed on an input electrode portion on a substrate to suppress the generation of metal film dust in the rubbing process. The present invention relates to a liquid crystal display device having a stable quality and a manufacturing method thereof.
【0002】[0002]
【従来の技術】液晶表示装置はフラットな構造や低消費
電力に特徴があり、液晶プロジェクタや液晶モニタ付き
ビデオカメラに代表される液晶表示装置付き電子機器、
テレビ等へと実用化され普及しつつある。図2は本発明
に係わる液晶表示装置の基本的な構成を示す図であり、
図における液晶表示装置1は、対向基板2および駆動基
板3から大略構成されている。2. Description of the Related Art A liquid crystal display device is characterized by a flat structure and low power consumption, and electronic equipment with a liquid crystal display device represented by a liquid crystal projector and a video camera with a liquid crystal monitor,
It is being put to practical use in televisions and is becoming widespread. FIG. 2 is a diagram showing a basic configuration of the liquid crystal display device according to the present invention.
The liquid crystal display device 1 in the figure is generally composed of a counter substrate 2 and a drive substrate 3.
【0003】対向基板2には、図示を省略したが、カラ
ー液晶パネルの場合にはR、G、Bのカラーフィルタ
や、透明電極2Aおよび配向膜2Bが形成されている。
駆動基板3には、互いに絶縁された走査線と信号線が形
成されていて、その交差部には各画素駆動用の薄膜トラ
ンジスタ(図示省略)が形成されるとともに、透明電極
3Aや配向膜3B、および透明電極3Aに駆動信号や電
源を供給する入力電極4が、透明電極3Aと同一材料の
ITO(Indium-Thin Oxide) 等によって形成されてい
る。かかる構造を有する液晶表示装置はアクティブマト
リクス型と呼ばれる。なお、本発明の対象となる液晶表
示装置はこの構造に限られるものではなく、単に例示し
たにすぎない。Although not shown, the counter substrate 2 is provided with R, G and B color filters, a transparent electrode 2A and an alignment film 2B in the case of a color liquid crystal panel.
Scanning lines and signal lines insulated from each other are formed on the drive substrate 3, thin film transistors (not shown) for driving each pixel are formed at the intersections thereof, and the transparent electrodes 3A and the alignment film 3B are formed. The input electrode 4 for supplying a drive signal and power to the transparent electrode 3A is formed of ITO (Indium-Thin Oxide) or the like made of the same material as the transparent electrode 3A. A liquid crystal display device having such a structure is called an active matrix type. The liquid crystal display device which is the object of the present invention is not limited to this structure and is merely an example.
【0004】これら対向基板2および駆動基板3は、そ
れぞれの製造工程において製造された後、所定の間隔を
もって対向配置されるとともに、スペーサ(図示省略)
を挟持してシール材5によって接合される。その後、図
示を省略した注入孔から液晶6を注入し、これらガラス
基板の両面に2枚の偏光板(図示省略)を一体に積層す
ることにより、上記構成の液晶表示装置1が完成され
る。The counter substrate 2 and the drive substrate 3 are manufactured in their respective manufacturing processes, and then are arranged to face each other with a predetermined gap therebetween, and a spacer (not shown) is provided.
Are sandwiched and joined by the seal material 5. After that, the liquid crystal 6 is injected from an injection hole (not shown), and two polarizing plates (not shown) are integrally laminated on both surfaces of these glass substrates to complete the liquid crystal display device 1 having the above configuration.
【0005】次に、図3に液晶表示装置におけるラビン
グ工程を例示して、従来の液晶表示装置のラビング方法
を説明する。ラビング工程は、前述の液晶6の配向性を
高めるために、配向膜2B、3Bの表面を一定方向にラ
ビングし、液晶分子をラビングした方向に配列し易くす
る工程である。Next, a rubbing method for a conventional liquid crystal display device will be described by exemplifying a rubbing process in the liquid crystal display device in FIG. The rubbing step is a step of rubbing the surfaces of the alignment films 2B and 3B in a certain direction to facilitate the alignment of the liquid crystal molecules in the rubbing direction in order to enhance the orientation of the liquid crystal 6.
【0006】このラビング工程は、被加工基板をコンベ
アで搬入し、この基板をフェルト等のラビング材料7が
巻着されたローラ8を、同図(b)に示したローラ回転
方向Cに回転させながら、ローラ進行方向Dに移動させ
て行われる。ラビング工程を終了した駆動基板は再びコ
ンベアで配送されて次工程に搬出される。In this rubbing process, a substrate to be processed is carried in by a conveyor, and the substrate is rotated by a roller 8 around which a rubbing material 7 such as felt is wound in a roller rotating direction C shown in FIG. Meanwhile, the movement is performed in the roller traveling direction D. The drive substrate that has completed the rubbing process is again delivered by the conveyor and carried out to the next process.
【0007】ところで、液晶表示装置1の配向膜塗布部
9は、図3に示すように、画素部の存在する表示領域に
形成されているため、入力電極4上には形成されていな
い。そのため、このようなラビング工程を施すことによ
り、ラビング工程途中にラビング材料7が入力電極4上
を通過して配向膜塗布部9に移行する際、入力電極4が
ラビング材料7によって削られ、ラビング材料7を通じ
て微量の金属膜が配向塗布部9上に転写される。By the way, the alignment film coating portion 9 of the liquid crystal display device 1 is not formed on the input electrode 4 because it is formed in the display region where the pixel portion exists, as shown in FIG. Therefore, by performing such a rubbing process, when the rubbing material 7 passes over the input electrode 4 and moves to the alignment film coating section 9 during the rubbing process, the input electrode 4 is scraped by the rubbing material 7 and is rubbed. A small amount of metal film is transferred onto the orientation coating section 9 through the material 7.
【0008】この転写は、入力電極4の形成された部分
に起こるため、液晶表示装置として組み立てたとき、そ
の部分だけが図4に示すようなスジ状のムラEとなり、
液晶表示装置の画質上の欠陥となる問題点がある。この
ことは、液晶表示装置の生産効率を著しく低下させると
ともに、液晶表示装置の製造コストを上昇させるという
問題点があった。Since this transfer occurs in the portion where the input electrode 4 is formed, when assembled as a liquid crystal display device, only that portion becomes streaky unevenness E as shown in FIG.
There is a problem in that the image quality of the liquid crystal display device becomes defective. This causes a problem that the production efficiency of the liquid crystal display device is significantly lowered and the manufacturing cost of the liquid crystal display device is increased.
【0009】[0009]
【発明が解決しようとする課題】本発明はかかる問題点
に鑑みてなされたもので、その課題は、ラビング工程途
中にラビング材料が入力電極上を通過して配向膜塗布部
に至る際、ラビング材料を通じて微量の金属膜が配向塗
布部上に転写されて発生するスジ状のムラ等を排除して
表示品質の安定化を図った液晶表示装置およびその製造
方法を提供することである。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a rubbing material when a rubbing material passes over an input electrode and reaches an alignment film coating portion during the rubbing process. It is an object of the present invention to provide a liquid crystal display device and a manufacturing method thereof, in which a display quality is stabilized by eliminating streaky unevenness or the like generated by transferring a trace amount of a metal film onto an alignment coating portion through a material.
【0010】[0010]
【課題を解決するための手段】上述した本発明の課題を
解決するために以下の手段を講じた。すなわち、本発明
の基板上に形成された配向膜塗布部と、前記配向膜塗布
部以外の領域に配置された入力電極部とを備えた液晶表
示装置において、入力電極部には、入力電極部を構成す
る入力電極とは所定の絶縁幅を有し、入力電極と同種の
膜質および膜厚で、かつ配向膜塗布部が形成されている
幅以上の範囲に渡ってダミー電極を併設して構成したこ
とを特徴とする。In order to solve the above-mentioned problems of the present invention, the following means have been taken. That is, in the liquid crystal display device including the alignment film coating portion formed on the substrate of the present invention and the input electrode portion arranged in a region other than the alignment film coating portion, the input electrode portion includes the input electrode portion. The input electrode has a predetermined insulation width, and has the same film quality and film thickness as the input electrode, and is also provided with a dummy electrode over the width where the alignment film coating part is formed. It is characterized by having done.
【0011】本発明の基板上に形成された配向膜塗布部
と、前記配向膜塗布部以外の領域に配置された入力電極
部とを備えた液晶表示装置の製造方法において、入力電
極部に、入力電極部を構成する入力電極とは所定の絶縁
幅を有し、入力電極と同種の膜質および膜厚で、かつ配
向膜塗布部が形成されている幅以上の範囲に渡ってダミ
ー電極を併設することにより、入力電極部を構成する入
力電極の削れによる微量の金属膜の転写が、配向膜塗布
部に均一に分布するようにして、液晶表示装置のラビン
グ工程におけるスジ状のムラの発生を回避するようにす
る。In the method for manufacturing a liquid crystal display device including the alignment film coating portion formed on the substrate of the present invention and the input electrode portion arranged in a region other than the alignment film coating portion, the input electrode portion is The input electrode that forms the input electrode section has a predetermined insulation width, and the dummy electrode is provided along with the same film quality and film thickness as the input electrode and over the width where the alignment film coating section is formed. By doing so, the transfer of a trace amount of the metal film due to the scraping of the input electrode forming the input electrode part is uniformly distributed in the alignment film coating part, and the occurrence of streak-like unevenness in the rubbing process of the liquid crystal display device Try to avoid it.
【0012】本発明の液晶表示装置およびその製造方法
によれば、配向膜塗布部以外の領域に配置された入力電
極部に、入力電極部を構成する入力電極と同種の膜質お
よび膜厚で、かつ配向膜塗布部が形成されている幅以上
の範囲に渡ってダミー電極を併設するようにしたため、
液晶表示装置のラビングに際し、ラビング材料による入
力電極の削れによって引き起こされる配向膜塗布部に対
する微量の金属膜の転写が、均一に分布されるようにな
る。これにより、液晶表示装置のラビング工程における
スジ状のムラの発生を回避して、液晶表示装置として組
み立て後の表示品質を向上することができる。According to the liquid crystal display device and the method of manufacturing the same of the present invention, the input electrode portion arranged in the region other than the alignment film coating portion has the same film quality and film thickness as the input electrode forming the input electrode portion, And since the dummy electrodes are arranged side by side over the range in which the alignment film coating portion is formed or more,
When rubbing the liquid crystal display device, the transfer of a trace amount of the metal film to the alignment film coating portion caused by the scraping of the input electrode by the rubbing material becomes evenly distributed. Accordingly, it is possible to avoid the occurrence of streaky unevenness in the rubbing process of the liquid crystal display device and improve the display quality of the liquid crystal display device after assembly.
【0013】[0013]
【発明の実施の形態】以下、本発明の具体的な実施の形
態につき添付図面を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.
【0014】図1を参照して本発明の液晶表示装置の詳
細を説明する。図1は本発明の液晶表示装置およびラビ
ング工程を示す上面図である。なお、従来技術で記載し
た事項と共通する部分には同一参照符合を付すものとす
る。The liquid crystal display device of the present invention will be described in detail with reference to FIG. FIG. 1 is a top view showing a liquid crystal display device and a rubbing process of the present invention. It should be noted that parts common to those described in the related art are designated by the same reference numerals.
【0015】本発明の液晶表示装置10は、駆動基板3
の表示領域に配設された配向膜塗布部9、表示領域以外
の領域にITO膜等によって形成された入力電極4、お
よび本発明の特徴事項として、ダミー電極100が、配
向膜塗布部9をカバーする領域に渡って形成されてい
る。すなわち、入力電極4の各々電極間には、ダミー電
極100が、一例として絶縁幅F=20μmを有し、膜
厚140nm程度で入力電極4と同一材料のITO膜に
よって形成されている。The liquid crystal display device 10 of the present invention comprises a drive substrate 3
Of the alignment film coating portion 9 disposed in the display area, the input electrode 4 formed of an ITO film or the like in the area other than the display area, and the feature of the present invention is that the dummy electrode 100 includes the alignment film coating portion 9. It is formed over the area to be covered. That is, the dummy electrode 100 is formed between the input electrodes 4 by an ITO film having the insulation width F = 20 μm and having a film thickness of about 140 nm and made of the same material as the input electrode 4 between the electrodes.
【0016】かかる構成の本発明の液晶表示装置10
は、ラビング工程に移される。ラビング工程では、前述
のようにラビング材料7の巻着されたローラ8がローラ
回転方向Cに回転、ローラ進行方向Dに進行し、このロ
ーラ8によって本発明の液晶表示装置10の表面を一定
方向にラビングする。The liquid crystal display device 10 of the present invention thus constructed
Are transferred to the rubbing process. In the rubbing process, the roller 8 wound with the rubbing material 7 rotates in the roller rotation direction C and travels in the roller advancing direction D as described above, and the roller 8 causes the surface of the liquid crystal display device 10 of the present invention to move in a predetermined direction. Rub to.
【0017】このとき、本発明の液晶表示装置10に
は、入力電極4に近接してダミー電極100が同一材料
により形成されているため、ラビング材料7が入力電極
4およびダミー電極100に均一に接触され、入力電極
4の不均一な削れおよびラビング材料7の片減りを低減
することができる。それとともに、ラビング材料7を通
じた微量の金属膜が、配向膜塗布部9全域に均一に転写
するようになり、液晶表示装置として組み立て後もスジ
状のムラは出現しない。At this time, in the liquid crystal display device 10 of the present invention, since the dummy electrode 100 is formed of the same material in the vicinity of the input electrode 4, the rubbing material 7 is uniformly applied to the input electrode 4 and the dummy electrode 100. It is possible to reduce uneven contact of the input electrode 4 and uneven wear of the rubbing material 7. At the same time, a trace amount of the metal film that has passed through the rubbing material 7 is evenly transferred to the entire area of the alignment film coating portion 9, and no streak-like unevenness appears even after assembly as a liquid crystal display device.
【0018】本発明は前記実施の形態例に限定されず、
種々の実施形態を採ることができる。例えば、前記実施
例では一例として液晶表示装置の単個取りのラビング方
法について例示したが、集合状態における液晶表示装置
のラビング方法や、斜め方向のラビング方法にも応用で
きることは論をまたない。また、本発明は駆動基板に対
する実施の形態例を例示したが、ラビング工程を施すあ
らゆる基板にも適用することが可能である。更に、本発
明は前記実施の形態例に限定されず、様々な形態に発展
できることは言うまでもない。The present invention is not limited to the above embodiment,
Various embodiments can be adopted. For example, the rubbing method for taking a single liquid crystal display device has been described as an example in the above embodiment, but it is needless to say that the present invention can also be applied to a rubbing method for a liquid crystal display device in an assembled state and a rubbing method in an oblique direction. Further, although the present invention exemplifies the embodiment with respect to the driving substrate, it can be applied to any substrate to which a rubbing process is applied. Further, it goes without saying that the present invention is not limited to the above-described embodiment, but can be developed in various forms.
【0019】[0019]
【発明の効果】以上説明したように、本発明の液晶表示
装置およびその製造方法によれば、入力電極に近接して
ダミー電極を形成したため、ラビング工程における基板
上での配向膜塗布部以外の部分的に露出している金属膜
の削れの影響によるスジ状のムラを低減し、液晶表示装
置の表示品質の向上を図ることが可能となる。これによ
り、ラビングプロセスにおけるプロセスマージンを拡大
することができ、液晶表示装置の生産効率が向上すると
いう効果がある。As described above, according to the liquid crystal display device and the method of manufacturing the same of the present invention, since the dummy electrode is formed in the vicinity of the input electrode, it is possible to perform the operation other than the alignment film application portion on the substrate in the rubbing process. It is possible to reduce streaky unevenness due to the effect of abrasion of the partially exposed metal film, and improve the display quality of the liquid crystal display device. This has the effect of increasing the process margin in the rubbing process and improving the production efficiency of the liquid crystal display device.
【図1】 本発明の液晶表示装置およびラビング工程を
示す上面図である。FIG. 1 is a top view showing a liquid crystal display device and a rubbing process of the present invention.
【図2】 本発明に係わる液晶表示装置の基本的な構成
を示す模式的な断面図である。FIG. 2 is a schematic cross-sectional view showing a basic configuration of a liquid crystal display device according to the present invention.
【図3】 従来の液晶表示装置におけるラビング工程を
示す図であり、(a)はラビング工程の上面図、(b)
はラビング工程の側面図である。3A and 3B are diagrams showing a rubbing process in a conventional liquid crystal display device, FIG. 3A is a top view of the rubbing process, and FIG.
[Fig. 4] is a side view of a rubbing process.
【図4】 従来の液晶表示装置におけるラビング工程の
問題点を説明する平面図である。FIG. 4 is a plan view illustrating a problem in a rubbing process in a conventional liquid crystal display device.
1…液晶表示装置、2…対向基板、3…駆動基板、4…
入力電極、5…シール材、6…液晶、7…ラビング材
料、8…ローラ、9…配向膜塗布部、10…本発明液晶
表示装置、100…ダミー電極1 ... Liquid crystal display device, 2 ... Counter substrate, 3 ... Drive substrate, 4 ...
Input electrode, 5 ... Sealing material, 6 ... Liquid crystal, 7 ... Rubbing material, 8 ... Roller, 9 ... Alignment film coating section, 10 ... Liquid crystal display device of the present invention, 100 ... Dummy electrode
Claims (2)
記配向膜塗布部以外の領域に配置された入力電極部とを
備えた液晶表示装置において、 前記入力電極部には、 前記入力電極部の入力電極とは所定の絶縁幅を有し、前
記入力電極と同種の膜質および膜厚で、かつ前記配向膜
塗布部の形成幅以上の範囲に渡ってダミー電極が併設さ
れていることを特徴とする液晶表示装置。1. A liquid crystal display device, comprising: an alignment film coating section formed on a substrate; and an input electrode section arranged in a region other than the alignment film coating section, wherein the input electrode section has the input The input electrode of the electrode part has a predetermined insulation width, the same kind of film quality and film thickness as the input electrode, and dummy electrodes are provided side by side over a range not less than the formation width of the alignment film coating part. Liquid crystal display device characterized by.
記配向膜塗布部以外の領域に配置された入力電極部とを
備えた液晶表示装置の製造方法において、 前記入力電極部に、 前記入力電極部を構成する入力電極とは所定の絶縁幅を
有し、前記入力電極と同種の膜質および膜厚で、かつ前
記配向膜塗布部の形成幅以上の範囲に渡ってダミー電極
を併設することにより、 前記入力電極の削れによる金属膜の転写が、前記配向膜
塗布部に均一に分布するようにして、ラビング工程にお
けるムラの発生を回避することを特徴とする液晶表示装
置の製造方法。2. A method for manufacturing a liquid crystal display device, comprising: an alignment film coating section formed on a substrate; and an input electrode section arranged in a region other than the alignment film coating section, wherein the input electrode section comprises: The input electrode that constitutes the input electrode portion has a predetermined insulation width, and has the same film quality and film thickness as the input electrode, and a dummy electrode is provided along with the width of the alignment film coating portion or more. By doing so, the transfer of the metal film due to the scraping of the input electrode is evenly distributed in the alignment film coating portion, thereby avoiding the occurrence of unevenness in the rubbing process. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12862996A JPH09311336A (en) | 1996-05-23 | 1996-05-23 | Liquid crystal display device and its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12862996A JPH09311336A (en) | 1996-05-23 | 1996-05-23 | Liquid crystal display device and its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09311336A true JPH09311336A (en) | 1997-12-02 |
Family
ID=14989540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12862996A Pending JPH09311336A (en) | 1996-05-23 | 1996-05-23 | Liquid crystal display device and its manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09311336A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009015193A (en) * | 2007-07-09 | 2009-01-22 | Epson Imaging Devices Corp | Liquid crystal display panel, its manufacturing method and electronic apparatus |
JP2013097191A (en) * | 2011-11-01 | 2013-05-20 | Mitsubishi Electric Corp | Liquid crystal display device |
-
1996
- 1996-05-23 JP JP12862996A patent/JPH09311336A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009015193A (en) * | 2007-07-09 | 2009-01-22 | Epson Imaging Devices Corp | Liquid crystal display panel, its manufacturing method and electronic apparatus |
JP2013097191A (en) * | 2011-11-01 | 2013-05-20 | Mitsubishi Electric Corp | Liquid crystal display device |
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