JPH09258194A - Production of liquid crystal element - Google Patents
Production of liquid crystal elementInfo
- Publication number
- JPH09258194A JPH09258194A JP6333496A JP6333496A JPH09258194A JP H09258194 A JPH09258194 A JP H09258194A JP 6333496 A JP6333496 A JP 6333496A JP 6333496 A JP6333496 A JP 6333496A JP H09258194 A JPH09258194 A JP H09258194A
- Authority
- JP
- Japan
- Prior art keywords
- screen printing
- plate
- transparent substrate
- film
- liquid crystal
- 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
Links
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は液晶素子の製造方法
に関するものであり、さらに詳しくはスクリーン印刷版
が配向膜と接触することがなく、安定した配向状態を維
持すると共に、表示品質が高く信頼性を向上した液晶素
子を効率的に製造する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 method for manufacturing a liquid crystal device, more specifically, a screen printing plate does not come into contact with an alignment film, maintains a stable alignment state, and has high display quality and reliability. The present invention relates to a method for efficiently manufacturing a liquid crystal element having improved properties.
【０００２】[0002]
【従来の技術】パーソナルコンピュータ、ワードプロセ
ッサーおよび液晶テレビなどの各種電子機器製品に使用
されている液晶素子は、一般的に次の〜の工程を経
て製造されている。2. Description of the Related Art Liquid crystal elements used in various electronic equipment products such as personal computers, word processors and liquid crystal televisions are generally manufactured through the following steps (1) to (2).
【０００３】．透明基板上に透明な導電膜を成膜す
る、．導電膜上にフォトエッチング法により電極パタ
ーンを形成する。．電極パターン上に配向膜を形成
し、配向処理を行う、．一方の透明基板上にスクリー
ン印刷法によりシール部を印刷する、．シール部を形
成した透明基板と、もう一方の透明基板とを対向させて
圧着し、双方の透明基板間に空隙を形成する、および
．透明基板間の空隙に液晶を注入し、封止する。.. Form a transparent conductive film on a transparent substrate ,. An electrode pattern is formed on the conductive film by a photo etching method. . Forming an alignment film on the electrode pattern and performing alignment treatment ,. Print the seal part on one transparent substrate by screen printing ,. The transparent substrate on which the seal portion is formed and the other transparent substrate are opposed to each other and pressure-bonded to each other to form a gap between the both transparent substrates. Liquid crystal is injected into the space between the transparent substrates and sealed.
【０００４】そして、上記の各工程のなかでも特に上記
工程は、得られる液晶素子の信頼性にとって重要な工
程であり、通常は図４に示したスクリーン印刷法により
シール部の形成が行われている。Of the above-mentioned steps, the above-mentioned step is particularly important for the reliability of the obtained liquid crystal element, and the seal portion is usually formed by the screen printing method shown in FIG. There is.
【０００５】すなわち、図４は従来のスクリーン印刷法
によりシール部を形成する方法を示す概略断面図であ
り、図中１は透明基板、２は透明基板１上に形成され液
晶を一定方向に配列させるための配向膜、３はスクリー
ン印刷により印刷されて対向する二つの透明基板１を一
定間隔の間隙を保って貼り合わせるためのシール部、４
はスクリーンの目を塞ぐための版膜、５はステンレス線
などで織成されたスクリーン、７はスクリーン５を固定
する版枠、８はヘラ状のゴム板スキージ、９はシール剤
である。That is, FIG. 4 is a schematic cross-sectional view showing a method of forming a seal portion by a conventional screen printing method, in which 1 is a transparent substrate and 2 is a transparent substrate 1 on which liquid crystals are arranged in a certain direction. An alignment film 3 for causing the film is printed by screen printing, and a seal portion 4 for adhering two transparent substrates 1 facing each other with a constant gap therebetween, 4
Is a plate film for closing the eyes of the screen, 5 is a screen woven with stainless wire, 7 is a plate frame for fixing the screen 5, 8 is a spatula-shaped rubber plate squeegee, and 9 is a sealant.
【０００６】ここで、スクリーン印刷版は、まず版枠７
にスクリーンを張り、このスクリーン５の下部に樹脂製
の版膜４を形成した後、フォトエッチング法などにより
必要な画線部分の版膜４を取り去ることにより製造され
る。Here, the screen printing plate is composed of the plate frame 7 first.
It is manufactured by forming a resin film 4 on the lower part of the screen 5 and forming a resin plate film 4 on the lower part of the screen 5, and then removing the plate film 4 in a necessary image area by a photoetching method or the like.
【０００７】そして、スクリーン印刷版上にシール剤９
を載せ、スキージ８を加圧しながら横方向へと摺動させ
ると、シール剤９が版膜４のない部分のスクリーン５を
通過して透明基板１上に印刷され、シール部３を形成す
ることができるのである。Then, the sealing agent 9 is applied on the screen printing plate.
When the squeegee 8 is placed on the transparent substrate 1 and the squeegee 8 is slid in the lateral direction while being pressed, the sealant 9 is printed on the transparent substrate 1 by passing through the screen 5 where the plate film 4 is absent to form the seal portion 3. Can be done.
【０００８】しかるに、上記版膜４を通常よく用いられ
ているエマルジョン樹脂などの柔らかい樹脂で形成する
場合には、図５に示したように、スクリーン５の凹凸に
沿って版膜４１の表面にも凹凸ができるため、配向膜２
表面に版膜４１が接触して加圧される際に、配向膜２の
表面に不均一な圧力が加わり、版膜４１の凸部により強
く加圧された部分の液晶の配向状態が不安定になり、液
晶素子の表示品質が低下してしまうという問題があっ
た。However, when the plate film 4 is formed of a soft resin such as an emulsion resin which is commonly used, as shown in FIG. 5, the plate film 41 is formed on the surface of the plate film 41 along the unevenness of the screen 5. Also has irregularities, so the alignment film 2
When the plate film 41 comes into contact with the surface and is pressed, non-uniform pressure is applied to the surface of the alignment film 2, and the alignment state of the liquid crystal in the portion strongly pressed by the convex portion of the plate film 41 is unstable. Therefore, there is a problem that the display quality of the liquid crystal element is deteriorated.
【０００９】上記の問題を解消するために、特開平７−
２８０６９号公報には、図６に示したように、透明基板
１と接触する面が平滑化された版膜４２、例えばニッケ
ルメッキを鏡面仕上げした版膜４２を形成したスクリー
ン印刷版を用いることにより、スクリーン印刷時の配向
膜２への加圧を均一にする方法が提案されている。In order to solve the above problems, Japanese Patent Laid-Open No. 7-
In Japanese Patent Publication No. 28069, as shown in FIG. 6, by using a screen printing plate having a plate film 42 having a smooth surface in contact with the transparent substrate 1, for example, a plate film 42 having a nickel-plated mirror finish. A method has been proposed in which the pressure applied to the alignment film 2 during screen printing is made uniform.
【００１０】しかしながら、上記特開平７−２８０６９
号公報に記載の方法では、確かに印刷圧力の均一化は図
れるものの、スクリーン印刷版の製作中や液晶素子製造
時の取り扱いなどにおいて、スクリーン５が凹凸状にな
ることがあるため、配向膜２へのダメージを完全になく
すことは不可能であった。そればかりか、上記の方法で
は、スクリーン５や金属製の版膜４２が配向膜２の有効
表示部と接触するため、スクリーン５に付着したゴミや
汚れなどが転写されて配向膜２に付着し、液晶素子の表
示品質や信頼性などを低下させるという欠点を依然とし
て包含していた。However, the above-mentioned Japanese Patent Laid-Open No. 7-28069.
According to the method described in the publication, although the printing pressure can be certainly made uniform, the screen 5 may become uneven during the production of the screen printing plate or the handling of the liquid crystal element. It was impossible to completely eliminate the damage to. In addition, in the above method, since the screen 5 and the metal plate film 42 come into contact with the effective display portion of the alignment film 2, dust and dirt attached to the screen 5 are transferred and attached to the alignment film 2. However, it still includes the drawback of lowering the display quality and reliability of the liquid crystal element.
【００１１】[0011]
【発明が解決しようとする課題】本発明は、上述した従
来技術における問題点の解決を課題として検討した結果
達成されたものである。SUMMARY OF THE INVENTION The present invention has been achieved as a result of studying to solve the problems in the prior art described above.
【００１２】したがって、本発明の目的は、スクリーン
印刷版が配向膜と接触することがなく、安定した配向状
態を維持すると共に、表示品質が高く信頼性を向上した
液晶素子を効率的に製造する方法を提供することにあ
る。Therefore, an object of the present invention is to efficiently manufacture a liquid crystal device in which the screen printing plate does not come into contact with the alignment film, maintains a stable alignment state, and has high display quality and improved reliability. To provide a method.
【００１３】[0013]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明の液晶素子の製造方法は、表面に配向膜を
形成した透明基板にスクリーン印刷法によりシール部を
印刷し、同様に配向膜を形成した他方の透明基板と対向
させてセルを形成することからなる液晶素子の製造方法
において、前記透明基板に接触する面の版膜の表面に、
厚さが５〜２００μｍで、前記配向膜の有効表示部と接
触しない程度の幅を有する樹脂板を形成したスクリーン
印刷板を用いることを特徴とする。In order to achieve the above object, a method for producing a liquid crystal element of the present invention is such that a seal portion is printed by a screen printing method on a transparent substrate having an alignment film formed on the surface, In the method of manufacturing a liquid crystal element, which comprises forming a cell by facing the other transparent substrate on which the alignment film is formed, on the surface of the plate film in contact with the transparent substrate,
A screen printing plate having a thickness of 5 to 200 μm and a resin plate having a width that does not contact the effective display portion of the alignment film is used.
【００１４】[0014]
【発明の実施の形態】以下に、図面を参照しつつ本発明
を詳述する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the drawings.
【００１５】図１および図２は本発明の液晶素子の製造
方法の第１実施の形態を示し、図１はスクリーン印刷版
を透明基板側から見た平面図、図２は図１のＤ−Ｄ´線
断面図である。1 and 2 show a first embodiment of a method for manufacturing a liquid crystal device according to the present invention. FIG. 1 is a plan view of a screen printing plate as seen from the transparent substrate side, and FIG. 2 is D- of FIG. It is a D'line sectional view.
【００１６】図１および図２において、上述した従来例
と同様の部分は図５および図６と同じ符号で示した。In FIGS. 1 and 2, the same parts as those in the conventional example described above are shown by the same reference numerals as those in FIGS. 5 and 6.
【００１７】すなわち、図１および図２において、１は
透明基板、２は透明基板１上に形成された配向膜、３は
スクリーン印刷により印刷されたシール部、５はステン
レス線などで織成されたスクリーンを示す。That is, in FIGS. 1 and 2, 1 is a transparent substrate, 2 is an alignment film formed on the transparent substrate 1, 3 is a seal portion printed by screen printing, and 5 is woven with a stainless wire or the like. Showing the screen.
【００１８】また、４３はスクリーン５の目を塞ぐため
の版膜であり、この実施の形態では５〜２０μｍ厚さの
ニッケル箔により形成されている。Reference numeral 43 is a plate film for closing the eyes of the screen 5, and in this embodiment, it is formed of a nickel foil having a thickness of 5 to 20 μm.
【００１９】ここで、本発明の特徴とするところは、６
Ａ，６Ｂで示した樹脂板であり、これは版膜４３表面の
シールパターン１０周縁に５〜２００μｍ厚さでエマル
ジョン樹脂を塗装することにより設けられている。Here, the features of the present invention are as follows:
The resin plates A and 6B are provided by coating the periphery of the seal pattern 10 on the surface of the plate film 43 with an emulsion resin in a thickness of 5 to 200 μm.
【００２０】この樹脂板６Ａ，６Ｂのうち、６Ａはセル
内側に位置するエマルジョン樹脂層であり、６Ｂはセル
外側に位置するエマルジョン樹脂層である。Of the resin plates 6A and 6B, 6A is an emulsion resin layer located inside the cell, and 6B is an emulsion resin layer located outside the cell.
【００２１】そして、セル内側に位置するエマルジョン
樹脂層６Ａは、図１に示したように、その最小幅が０．
０５ｍｍで、最大幅は配向膜２の有効表示部１１と接触
しない程度となっており、セル外側に位置するエマルジ
ョン樹脂層６Ｂは、透明基板１との段差をなくし、スク
リーン印刷版の変形を防止するために、版膜４３の全面
を覆っていることが望ましい。As shown in FIG. 1, the emulsion resin layer 6A located inside the cell has a minimum width of 0.
The width is 05 mm and the maximum width is such that it does not come into contact with the effective display portion 11 of the alignment film 2, and the emulsion resin layer 6B located outside the cell eliminates a step with the transparent substrate 1 and prevents deformation of the screen printing plate. Therefore, it is desirable to cover the entire surface of the plate film 43.
【００２２】また、図３に示した第２実施の形態は、セ
ル内部に非有効表示部１２を有する場合であり、この場
合にはセル内部の非有効表示部１２周縁にもエマルジョ
ン樹脂層６Ｃを形成することができる。The second embodiment shown in FIG. 3 is a case where the non-effective display portion 12 is provided inside the cell, and in this case, the emulsion resin layer 6C is also provided on the periphery of the non-effective display portion 12 inside the cell. Can be formed.
【００２３】このように、透明基板１に接触する面の版
膜４３の表面に、配向膜２の有効表示部１１と接触しな
い程度の幅を有する樹脂板６Ａ〜６Ｃを形成したスクリ
ーン印刷板を用い、透明基板１の配向処理した配向膜２
上にエポキシ系樹脂などのシール剤をスクリーン印刷
し、シールパターン部１０を介してシール部３を形成す
ることによって、スキージ８がスクリーン５を押圧して
も、その力は樹脂板６Ａ〜６Ｃによって遮られるため、
版膜４３面と配向膜２面が直接接触することがなく、そ
の結果配向膜２面へのダメージが解消し、液晶の配向が
安定して液晶素子としての表示品質が向上する。また、
配向膜２の有効表示部１１に、スクリーン印刷版に付着
したゴミや汚れが転写されるおそれも解消し、液晶素子
の信頼性がきわめて向上する。In this way, a screen printing plate having resin plates 6A to 6C formed on the surface of the plate film 43 which is in contact with the transparent substrate 1 and has a width that does not contact the effective display portion 11 of the alignment film 2 is formed. Alignment film 2 used for alignment treatment of transparent substrate 1
Even if the squeegee 8 presses the screen 5, the force is applied by the resin plates 6A to 6C by screen-printing a sealant such as an epoxy resin on the top and forming the seal part 3 via the seal pattern part 10. To be blocked,
Since the surface of the plate film 43 and the surface of the alignment film 2 do not come into direct contact with each other, damage to the surface of the alignment film 2 is eliminated, the alignment of the liquid crystal is stabilized, and the display quality as a liquid crystal element is improved. Also,
The possibility that dust or dirt attached to the screen printing plate is transferred to the effective display portion 11 of the alignment film 2 is also eliminated, and the reliability of the liquid crystal element is significantly improved.
【００２４】ただし、上記樹脂板６Ａ〜６Ｃの厚みが５
μｍ未満では、スキージ８で押されたスクリーン印刷版
が反り、配向膜２面に接触しやすくなり、また２００μ
ｍを越えると、スクリーン印刷版の厚みが厚くなって、
印刷条件を大幅に変更せざるを得なくなるため好ましく
ない。However, the resin plates 6A to 6C have a thickness of 5
If it is less than μm, the screen printing plate pressed by the squeegee 8 is warped, and it is easy to come into contact with the surface of the alignment film 2.
If it exceeds m, the thickness of the screen printing plate becomes thicker,
It is not preferable because the printing conditions have to be changed drastically.
【００２５】またセル内側の樹脂板６Ａ，６Ｃの幅が
０．０５ｍｍ未満である場合は、エマルジョン樹脂によ
るパターンニングが困難であるばかりか、スキージ８の
押圧によるスクリーン印刷版の変形を十分に抑制するこ
とができなくなり、最大幅がセル内の有効表示部１１と
接触するような幅となる場合には、樹脂板６Ａ，６Ｂに
付着したゴミや汚れが配向膜２に転写されて液晶素子の
表示品質や信頼性が低下する傾向となるため好ましくな
い。When the width of the resin plates 6A and 6C inside the cell is less than 0.05 mm, patterning with the emulsion resin is difficult and deformation of the screen printing plate due to pressing of the squeegee 8 is sufficiently suppressed. When the maximum width is such that it contacts the effective display portion 11 in the cell, dust and dirt adhering to the resin plates 6A and 6B are transferred to the alignment film 2 and the liquid crystal element It is not preferable because the display quality and reliability tend to be reduced.
【００２６】なお、樹脂板６Ａ〜６Ｃは、上記の構造に
パターンニング可能で、スキージ８の押圧に耐える性能
を有するものであれば、エマルジョン樹脂以外の材質で
形成することが可能である。The resin plates 6A to 6C can be formed of a material other than the emulsion resin as long as the resin plates 6A to 6C can be patterned in the above-mentioned structure and have a property of withstanding the pressing of the squeegee 8.
【００２７】[0027]
【発明の効果】以上説明したように、本発明の液晶素子
の製造方法によれば、透明基板に接触する面の版膜の表
面に、厚さが５〜２００μｍで、配向膜の有効表示部と
接触しない程度の幅を有する樹脂板を形成したスクリー
ン印刷板を用いたため、スクリーン印刷版が配向膜と接
触することがなく、安定した配向状態を維持すると共
に、表示品質が高く信頼性を向上した液晶素子を効率的
に製造することができる。As described above, according to the method of manufacturing a liquid crystal element of the present invention, the effective display portion of the alignment film having a thickness of 5 to 200 μm on the surface of the plate film which is in contact with the transparent substrate. Since a screen printing plate formed with a resin plate with a width that does not contact with the screen printing plate does not come into contact with the alignment film, the stable alignment state is maintained and the display quality is high and reliability is improved. The liquid crystal element can be efficiently manufactured.
【図１】図１は本発明の第１実施の形態においてスクリ
ーン印刷版を透明基板側から見た平面図である。FIG. 1 is a plan view of a screen printing plate viewed from a transparent substrate side according to a first embodiment of the present invention.
【図２】図２は図１のＤ−Ｄ´線断面図である。FIG. 2 is a sectional view taken along line DD ′ of FIG.
【図３】図３は本発明の第２実施の形態においてスクリ
ーン印刷版を透明基板側から見た平面図である。FIG. 3 is a plan view of a screen printing plate as seen from the transparent substrate side according to the second embodiment of the present invention.
【図４】図４は従来のスクリーン印刷法によりシール部
を形成する方法を示す概略断面図である。FIG. 4 is a schematic cross-sectional view showing a method for forming a seal portion by a conventional screen printing method.
【図５】図５は従来のスクリーン印刷法におけるスクリ
ーン印刷版部分の拡大断面図である。FIG. 5 is an enlarged sectional view of a screen printing plate portion in a conventional screen printing method.
【図６】図６は同じく従来のスクリーン印刷法における
スクリーン印刷版部分の拡大断面図である。FIG. 6 is an enlarged sectional view of a screen printing plate portion in the same conventional screen printing method.
１ 透明基板 ２ 配向膜 ３ シール部 ４３ 版膜 ５ スクリーン ６Ａ 樹脂板（エマルジョン樹脂層 セル内部） ６Ｂ 樹脂板（エマルジョン樹脂層 セル外部） ６Ｃ 樹脂板（エマルジョン樹脂層 セル中央） ７ 版枠 ８ スキージ ９ シール剤 １０ シールパターン部 １１ 有効表示部 １２ 非有効表示部（セル内部） 1 Transparent Substrate 2 Alignment Film 3 Seal Part 43 Plate Film 5 Screen 6A Resin Plate (Emulsion Resin Layer Inside Cell) 6B Resin Plate (Emulsion Resin Layer Outside Cell) 6C Resin Plate (Emulsion Resin Layer Inside Cell) 7 Plate Frame 8 Squeegee 9 Sealant 10 Seal pattern part 11 Effective display part 12 Ineffective display part (inside the cell)
Claims (2)
リーン印刷法によりシール部を印刷し、同様に配向膜を
形成した他方の透明基板と対向させてセルを形成するこ
とからなる液晶素子の製造方法において、前記透明基板
に接触する面の版膜の表面に、厚さが５〜２００μｍ
で、前記配向膜の有効表示部と接触しない程度の幅を有
する樹脂板を形成したスクリーン印刷板を用いることを
特徴とする液晶素子の製造方法。1. A liquid crystal device comprising a transparent substrate having an alignment film formed on its surface, a seal portion printed by a screen printing method, and a cell being formed so as to face the other transparent substrate similarly having the alignment film formed thereon. In the manufacturing method, a thickness of 5 to 200 μm is provided on the surface of the plate film that is in contact with the transparent substrate.
2. A method for manufacturing a liquid crystal element, comprising using a screen printing plate formed with a resin plate having a width that does not contact the effective display portion of the alignment film.
スクリーン印刷板を用いることを特徴とする請求項１に
記載の液晶素子の製造方法。2. The method for producing a liquid crystal element according to claim 1, wherein a screen printing plate having a resin plate formed of an emulsion resin layer is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08063334A JP3103501B2 (en) | 1996-03-19 | 1996-03-19 | Manufacturing method of liquid crystal element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08063334A JP3103501B2 (en) | 1996-03-19 | 1996-03-19 | Manufacturing method of liquid crystal element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09258194A true JPH09258194A (en) | 1997-10-03 |
| JP3103501B2 JP3103501B2 (en) | 2000-10-30 |
Family
ID=13226251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08063334A Expired - Fee Related JP3103501B2 (en) | 1996-03-19 | 1996-03-19 | Manufacturing method of liquid crystal element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3103501B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007060742A1 (en) * | 2005-11-28 | 2007-05-31 | Mitsubishi Denki Kabushiki Kaisha | Printing mask and solar cell, and flat panel display ad chip capacitor |
| US7243601B2 (en) | 2002-07-10 | 2007-07-17 | Sharp Kabushiki Kaisha | Printing plate, press and method of printing, and apparatus and method for manufacturing liquid crystal devices |
| WO2012053257A1 (en) * | 2010-10-21 | 2012-04-26 | シャープ株式会社 | Screen printing plate, seal printing method, and liquid crystal display panel produced by using same |
-
1996
- 1996-03-19 JP JP08063334A patent/JP3103501B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7243601B2 (en) | 2002-07-10 | 2007-07-17 | Sharp Kabushiki Kaisha | Printing plate, press and method of printing, and apparatus and method for manufacturing liquid crystal devices |
| WO2007060742A1 (en) * | 2005-11-28 | 2007-05-31 | Mitsubishi Denki Kabushiki Kaisha | Printing mask and solar cell, and flat panel display ad chip capacitor |
| US7906366B2 (en) | 2005-11-28 | 2011-03-15 | Mitsubishi Electric Corporation | Printing mask and solar cell |
| WO2012053257A1 (en) * | 2010-10-21 | 2012-04-26 | シャープ株式会社 | Screen printing plate, seal printing method, and liquid crystal display panel produced by using same |
| JP5659236B2 (en) * | 2010-10-21 | 2015-01-28 | シャープ株式会社 | Screen printing plate, seal printing method, and liquid crystal display panel manufactured using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3103501B2 (en) | 2000-10-30 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |