JPH0611612A - Production of color liquid-crystal element - Google Patents
Production of color liquid-crystal elementInfo
- Publication number
- JPH0611612A JPH0611612A JP4168792A JP16879292A JPH0611612A JP H0611612 A JPH0611612 A JP H0611612A JP 4168792 A JP4168792 A JP 4168792A JP 16879292 A JP16879292 A JP 16879292A JP H0611612 A JPH0611612 A JP H0611612A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- transparent resin
- liquid crystal
- pressing
- color filter
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、液晶カラーテレビ等に
用いられるカラー液晶素子の製造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 color liquid crystal element used in a liquid crystal color television or the like.
【０００２】[0002]
【従来の技術】液晶カラーテレビやＯＡ用ディスプレイ
の需要拡大にともない、大型、高精細、カラーの液晶素
子が開発されている。とくに１８０度以上のねじれ角を
持つ液晶素子や強誘電性液晶を用いた液晶素子では、画
質の均一性を得るため液晶層の厚みの制御を極めて高い
精度で行っている。カラー液晶素子の構成としては、カ
ラーフィルタ上に透明樹脂層を形成し、前記透明樹脂層
上に透明電極を形成するという方法が用いられており、
前記透明樹脂層表面も極めて平坦にする必要がある。2. Description of the Related Art With the increasing demand for liquid crystal color televisions and OA displays, large-sized, high-definition, color liquid crystal elements have been developed. Particularly in a liquid crystal element having a twist angle of 180 degrees or more or a liquid crystal element using a ferroelectric liquid crystal, the thickness of the liquid crystal layer is controlled with extremely high precision in order to obtain uniform image quality. As a structure of the color liquid crystal element, a method of forming a transparent resin layer on a color filter and forming a transparent electrode on the transparent resin layer is used,
The surface of the transparent resin layer also needs to be extremely flat.
【０００３】以下、図面を参照しながら従来のカラー液
晶素子の製造方法の一例について説明する。An example of a conventional method for manufacturing a color liquid crystal element will be described below with reference to the drawings.
【０００４】図５は、従来のカラー液晶素子の製造方法
における透明樹脂層の形成方法を示す工程説明図であ
る。FIG. 5 is a process explanatory view showing a method of forming a transparent resin layer in a conventional method of manufacturing a color liquid crystal element.
【０００５】１は透明基板、２はカラーフィルタ、３は
透明樹脂、４は押圧用基板、５は紫外線ランプ、７は付
着樹脂、８は透明樹脂層である。Reference numeral 1 is a transparent substrate, 2 is a color filter, 3 is a transparent resin, 4 is a pressing substrate, 5 is an ultraviolet lamp, 7 is an attached resin, and 8 is a transparent resin layer.
【０００６】まず、図５（Ａ）に示すように、ガラスな
どの透明基板１と印刷などにより形成されたカラーフィ
ルタ２とからなるカラーフィルタ基板上に無溶剤型紫外
線硬化性の透明樹脂３をスピンコータなどにより塗布す
る。First, as shown in FIG. 5A, a solventless ultraviolet curable transparent resin 3 is formed on a color filter substrate composed of a transparent substrate 1 such as glass and a color filter 2 formed by printing or the like. Apply with a spin coater.
【０００７】次に図５（Ｂ）に示すように、透明樹脂３
上を押圧用基板４で押圧する。次に図５（Ｃ）に示すよ
うに、透明樹脂３を紫外線ランプ５で紫外線硬化する。Next, as shown in FIG. 5B, the transparent resin 3
The top is pressed by the pressing substrate 4. Next, as shown in FIG. 5C, the transparent resin 3 is ultraviolet-cured by the ultraviolet lamp 5.
【０００８】次に図５（Ｄ）に示すように、押圧用基板
４を剥離することにより極めて平坦な透明樹脂層８を形
成することができる。Then, as shown in FIG. 5 (D), the pressing substrate 4 is peeled off to form an extremely flat transparent resin layer 8.
【０００９】しかしながら図５（Ｂ）に示すように、透
明樹脂３を押圧用基板４で押圧すると、透明樹脂３がカ
ラーフィルタ基板の縁からはみだし、図５（Ｄ）に示す
ように、押圧用基板４を剥離すると前記押圧用基板４上
に付着樹脂７が残る。However, as shown in FIG. 5B, when the transparent resin 3 is pressed by the pressing substrate 4, the transparent resin 3 protrudes from the edge of the color filter substrate, and as shown in FIG. When the substrate 4 is peeled off, the attached resin 7 remains on the pressing substrate 4.
【００１０】従来、前記付着樹脂７を除去して押圧用基
板４を再使用するために、アセトン、エタノールなどの
有機溶剤を用いた拭き取り洗浄を行っていた。Conventionally, in order to remove the adhered resin 7 and reuse the pressing substrate 4, a wiping cleaning using an organic solvent such as acetone or ethanol has been performed.
【００１１】[0011]
【発明が解決しようとする課題】しかしながら上記のよ
うな有機溶剤を用いた洗浄は、引火性や人体への影響か
ら量産化が困難である。また、一般的なアルカリ洗浄で
は、押圧用基板上に残った付着樹脂を十分に除去できな
いという課題があった。本発明は、上記課題に鑑み、押
圧用基板上に残った付着樹脂を、安全性の高い方法で除
去し、前記押圧用基板を再使用することにより、低コス
トなカラー液晶素子の製造方法を提供するものである。However, the cleaning using the organic solvent as described above is difficult to mass-produce due to the flammability and the influence on the human body. Further, there is a problem in that the adhered resin remaining on the pressing substrate cannot be sufficiently removed by general alkali cleaning. In view of the above problems, the present invention removes the adhered resin remaining on the pressing substrate by a highly safe method, and reuses the pressing substrate to provide a low-cost color liquid crystal element manufacturing method. It is provided.
【００１２】[0012]
【課題を解決するための手段】上記課題を解決するため
に、本発明のカラー液晶素子の製造方法では、透明基板
とカラーフィルタとからなるカラーフィルタ基板上にラ
ジカル重合型の紫外線硬化性を有する透明樹脂を塗布
し、次に前記透明樹脂を押圧用基板で押圧し紫外線硬化
後、前記押圧用基板を剥離して前記カラーフィルタ基板
上に透明樹脂層を形成し、次に剥離した前記押圧用基板
を化学構造式が（化１）で示される非イオン界面活性剤
を含有する洗剤で洗浄して再使用するものである。In order to solve the above problems, in the method for manufacturing a color liquid crystal device of the present invention, a radical polymerization type ultraviolet curable material is provided on a color filter substrate composed of a transparent substrate and a color filter. A transparent resin is applied, and then the transparent resin is pressed by a pressing substrate to cure with ultraviolet light, the pressing substrate is peeled off to form a transparent resin layer on the color filter substrate, and then the peeled pressing member is formed. The substrate is washed with a detergent containing a nonionic surfactant represented by the chemical structural formula (Formula 1) and reused.
【００１３】[0013]
【作用】透明樹脂としてラジカル重合型の紫外線硬化性
を有する透明樹脂を使用する場合、酸素による硬化阻害
のために、カラーフィルタ基板周辺の透明樹脂は十分重
合しない。このため、押圧用基板上に残る付着樹脂の重
合度も低く、本願発明で開示される非イオン界面活性剤
を含有する洗剤により前記付着樹脂を除去することがで
きる。When a radical polymerization type ultraviolet curable transparent resin is used as the transparent resin, the transparent resin around the color filter substrate is not sufficiently polymerized due to the inhibition of curing by oxygen. Therefore, the degree of polymerization of the adhering resin remaining on the pressing substrate is low, and the adhering resin can be removed by the detergent containing the nonionic surfactant disclosed in the present invention.
【００１４】[0014]
【実施例】以下、本発明の実施例のカラー液晶素子の製
造方法について図面を参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for manufacturing a color liquid crystal device according to an embodiment of the present invention will be described below with reference to the drawings.
【００１５】図１は本発明の一実施例のカラー液晶素子
の製造方法を示す工程説明図である。１は透明基板、２
はカラーフィルタ、３は透明樹脂、４は押圧用基板、５
は紫外線ランプ、６は未硬化部分、７は付着樹脂、８は
透明樹脂層、９は洗剤、１０は洗浄槽、１１は透明電
極、１２は配向膜、１３は液晶層である。FIG. 1 is a process explanatory view showing a method of manufacturing a color liquid crystal device according to an embodiment of the present invention. 1 is a transparent substrate, 2
Is a color filter, 3 is a transparent resin, 4 is a pressing substrate, and 5 is
Is an ultraviolet lamp, 6 is an uncured portion, 7 is an attached resin, 8 is a transparent resin layer, 9 is a detergent, 10 is a cleaning tank, 11 is a transparent electrode, 12 is an alignment film, and 13 is a liquid crystal layer.
【００１６】まず図１（Ａ）に示すように、ガラスなど
の透明基板１と印刷法により形成されたカラーフィルタ
２とからなるカラーフィルタ基板上にポリエステルアク
リレートを主成分とする紫外線硬化性の透明樹脂３をス
ピンコート法により塗布した。First, as shown in FIG. 1A, an ultraviolet curable transparent film containing polyester acrylate as a main component is formed on a color filter substrate composed of a transparent substrate 1 such as glass and a color filter 2 formed by a printing method. Resin 3 was applied by spin coating.
【００１７】次に図１（Ｂ）に示すように、透明樹脂３
上を透明な押圧用基板４で押圧した。Next, as shown in FIG. 1B, the transparent resin 3
The top was pressed by the transparent pressing substrate 4.
【００１８】次に図１（Ｃ）に示すように、空気中にお
いて透明樹脂３を紫外線ランプ５で紫外線硬化した。こ
のとき、カラーフィルタ基板の縁の部分の透明樹脂３
は、酸素による硬化阻害のため未硬化部分６となった。Next, as shown in FIG. 1C, the transparent resin 3 was ultraviolet-cured by the ultraviolet lamp 5 in the air. At this time, the transparent resin 3 at the edge of the color filter substrate
Became an uncured portion 6 due to the inhibition of curing by oxygen.
【００１９】次に図１（Ｄ）に示すように、押圧用基板
４を剥離することによりカラーフィルタ基板上に極めて
平坦な透明樹脂層８を形成することができた。透明樹脂
層８上を接触式表面粗さ計で測定したところ凹凸は±
０．０５μｍ以下であった。一方、押圧用基板４上には
カラーフィルタ基板の縁に対応するように線状の付着樹
脂７が形成された。Next, as shown in FIG. 1D, the pressing substrate 4 was peeled off to form an extremely flat transparent resin layer 8 on the color filter substrate. When the transparent resin layer 8 was measured with a contact type surface roughness meter, the unevenness was ±
It was 0.05 μm or less. On the other hand, a linear adhesive resin 7 was formed on the pressing substrate 4 so as to correspond to the edge of the color filter substrate.
【００２０】次に図１（Ｅ）に示すように、液温４０℃
の洗剤９を満たした洗浄槽１０中に１分間浸漬したとこ
ろ付着樹脂７を完全に除去することができた。洗剤９と
して、 非イオン界面活性剤 ５重量部 無機アルカリ ３重量部 水 １００重量部 を使用した。非イオン活性剤の化学構造式は（化１）で
示され、ポリオキシプロピレン基の平均分子量が２００
０、ポリオキシエチレン基の含有率が４０ｍｏｌ％のも
のである。無機アルカリとしては、硫酸ソーダ２重量部
とケイ酸ソーダ１重量部を混合したものを用いた。他に
苛性ソーダ、炭酸ソーダ、リン酸ソーダなども使用する
ことができる。Next, as shown in FIG. 1 (E), the liquid temperature is 40 ° C.
When it was immersed for 1 minute in the cleaning tank 10 filled with the detergent 9 of 1., the attached resin 7 could be completely removed. As the detergent 9, 5 parts by weight of nonionic surfactant, 3 parts by weight of inorganic alkali, and 100 parts by weight of water were used. The chemical structural formula of the nonionic activator is shown in (Chemical formula 1), and the average molecular weight of the polyoxypropylene group is 200.
0, the content of polyoxyethylene groups is 40 mol%. As the inorganic alkali, a mixture of 2 parts by weight of sodium sulfate and 1 part by weight of sodium silicate was used. Besides, caustic soda, sodium carbonate, sodium phosphate and the like can be used.
【００２１】図１（Ｅ）でカラーフィルタ基板上に透明
樹脂層８を形成した後に、透明樹脂層８上に順に透明電
極１１と配向膜１２を形成したものを下基板とし、透明
基板１上に透明電極１１と配向膜１２を順に形成したも
のを上基板として図１（Ｆ）に示すカラー液晶素子が得
られた。すなわち、下側基板のカラーフィルタと上側基
板の透明電極とが対応するように、かつ両基板を所望の
間隙を保ち併置した後に両基板間に液晶を注入してカラ
ー液晶素子が完成される。In FIG. 1 (E), a transparent resin layer 8 is formed on a color filter substrate, and then a transparent electrode 11 and an alignment film 12 are sequentially formed on the transparent resin layer 8 as a lower substrate. A color liquid crystal device shown in FIG. 1F was obtained by using the transparent electrode 11 and the alignment film 12 sequentially formed on the upper substrate as an upper substrate. That is, a color liquid crystal device is completed by injecting liquid crystal between both substrates so that the color filters of the lower substrate and the transparent electrodes of the upper substrate correspond to each other and the two substrates are placed side by side with a desired gap.
【００２２】本発明のカラー液晶素子の製造方法により
押圧用基板を洗浄し、１００回以上繰り返して使用した
が、樹脂残りも洗浄跡も発生せず表示品位の高いカラー
液晶素子を製造することができた。The pressing substrate was washed by the method for producing a color liquid crystal element of the present invention and repeatedly used 100 times or more. However, it is possible to produce a color liquid crystal element having a high display quality with no resin residue or washing marks. did it.
【００２３】図２は非イオン界面活性剤の水１００重量
部に対する配合量と樹脂残りの関係を示したものであ
る。他の条件はすべて実施例１と同様である。FIG. 2 shows the relationship between the amount of the nonionic surfactant compounded with 100 parts by weight of water and the resin residue. All other conditions are the same as in Example 1.
【００２４】樹脂残りは洗剤に１分間浸漬して洗浄後の
付着樹脂の重量の洗浄前に対する割合で評価した。非イ
オン界面活性剤を含まない場合、付着樹脂はほとんど変
化しないが０．５重量部以上配合すると付着樹脂が急激
に除去されるようになり、１重量部以上で完全になくな
った。The resin residue was evaluated by the ratio of the weight of the adhered resin after being dipped in a detergent for 1 minute to that before washing. When the nonionic surfactant was not contained, the adhering resin hardly changed, but when 0.5 part by weight or more was compounded, the adhering resin was rapidly removed, and when it was 1 part by weight or more, it completely disappeared.
【００２５】図３はポリオキシエチレン基の含有率と樹
脂残りの関係を示したものであり、図４はポリオキシエ
チレン基の含有率と起泡性の関係を示したものである。
他の条件はすべて実施例１と同様である。FIG. 3 shows the relationship between the polyoxyethylene group content and the resin residue, and FIG. 4 shows the relationship between the polyoxyethylene group content and the foaming property.
All other conditions are the same as in Example 1.
【００２６】起泡性は、洗剤を１００ｍｌネスラー管に
５０ｍｌ採取し、４０℃で３０回／１０秒で振とうし、
５分後の泡量を測定した。As for the foaming property, 50 ml of the detergent was sampled in a 100 ml Nessler tube and shaken at 40 ° C. for 30 times / 10 seconds,
The amount of foam after 5 minutes was measured.
【００２７】ポリオキシエチレン基は親水性を有し、含
有率が低いと水へ溶解し難くなる。また、含有率が高い
と泡立ちが生じる。 ポリオキシエチレン基の含有率が
２０ｍｏｌ％より小さくなると、沈澱物が生じ、洗浄効
果が下がるためやや樹脂残りが生じた。また、ポリオキ
シエチレン基の含有率が５０ｍｏｌ％より大きくなる
と、泡立ちが大きくなり、十分な水切りを行わないと押
圧用基板上にリング状の跡が残った。The polyoxyethylene group has hydrophilicity, and if the content is low, it becomes difficult to dissolve in water. Further, when the content is high, foaming occurs. When the content of the polyoxyethylene group was less than 20 mol%, a precipitate was generated and the cleaning effect was lowered, so that the resin residue was slightly generated. Further, when the content of the polyoxyethylene group was more than 50 mol%, foaming became large, and a ring-shaped mark remained on the pressing substrate unless sufficient draining was performed.
【００２８】[0028]
【発明の効果】本願発明によれば、前記押圧用基板を再
使用することにより、低コストなカラー液晶素子の製造
方法を実現ができる。According to the present invention, by reusing the pressing substrate, a low-cost method for manufacturing a color liquid crystal element can be realized.
【図１】本発明の実施例のカラー液晶素子の製造方法を
示す工程図FIG. 1 is a process chart showing a method for manufacturing a color liquid crystal device according to an embodiment of the present invention.
【図２】非イオン界面活性剤の配合比と樹脂残りの関係
図[Fig. 2] Relationship between blending ratio of nonionic surfactant and resin residue
【図３】ポリオキシエチレン基の含有率と樹脂残りの関
係図Fig. 3 Relationship between polyoxyethylene group content and resin residue
【図４】ポリオキシエチレン基の含有率と起泡性の関係
図FIG. 4 is a diagram showing the relationship between the content of polyoxyethylene groups and foamability.
【図５】従来のカラー液晶素子の製造方法を示す工程説
明図FIG. 5 is a process explanatory view showing a conventional method for manufacturing a color liquid crystal element.
１ 透明基板 ２ カラーフィルタ ３ 透明樹脂 ４ 押圧用基板 ５ 紫外線ランプ ６ 未硬化部分 ７ 付着樹脂 ８ 透明樹脂層 ９ 洗剤 １０ 洗浄槽 １１ 透明電極 １２ 配向膜 １３ 液晶層 1 Transparent Substrate 2 Color Filter 3 Transparent Resin 4 Pressing Substrate 5 Ultraviolet Lamp 6 Uncured Part 7 Adhesive Resin 8 Transparent Resin Layer 9 Detergent 10 Cleaning Tank 11 Transparent Electrode 12 Alignment Film 13 Liquid Crystal Layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 林 祥剛 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Shogo Hayashi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (4)
ーフィルタ基板上にラジカル重合型の紫外線硬化性を有
する透明樹脂を塗布し、次に前記透明樹脂を押圧用基板
で押圧し紫外線硬化後、前記押圧用基板を剥離してカラ
ーフィルタ基板上に透明樹脂層を形成し、次に剥離した
押圧用基板を化学構造式が（化１）で示される非イオン
界面活性剤を含有する洗剤で洗浄することを特徴とする
カラー液晶素子の製造方法。 【化１】 1. A radical polymerization type ultraviolet curable transparent resin is applied on a color filter substrate comprising a transparent substrate and a color filter, and then the transparent resin is pressed by a pressing substrate to cure the ultraviolet ray, The pressing substrate is peeled off to form a transparent resin layer on the color filter substrate, and then the peeled pressing substrate is washed with a detergent containing a nonionic surfactant represented by the chemical structural formula (Formula 1). A method for manufacturing a color liquid crystal device, which is characterized by the above. [Chemical 1]
成分とすることを特徴とする請求項１記載のカラー液晶
素子の製造方法。2. The method for producing a color liquid crystal device according to claim 1, wherein the transparent resin contains polyester acrylate as a main component.
示される非イオン活性剤を１重量部以上含有することを
特徴とする請求項２記載のカラー液晶素子の製造方法。3. The method for producing a color liquid crystal device according to claim 2, wherein the detergent contains 1 part by weight or more of the nonionic activator represented by the chemical formula 1 with respect to 100 parts by weight of water.
ポリオキシプロピレン基の平均分子量が１５００〜２５
００であり、かつポリオキシエチレン基の含有率が２０
ｍｏｌ％〜５０ｍｏｌ％であることを特徴とする請求項
３記載のカラー液晶素子の製造方法。4. The average molecular weight of the polyoxypropylene group of the nonionic surfactant represented by the chemical formula 1 is 1500 to 25.
And the polyoxyethylene group content is 20
It is mol% -50 mol%, The manufacturing method of the color liquid crystal element of Claim 3 characterized by the above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4168792A JPH0611612A (en) | 1992-06-26 | 1992-06-26 | Production of color liquid-crystal element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4168792A JPH0611612A (en) | 1992-06-26 | 1992-06-26 | Production of color liquid-crystal element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0611612A true JPH0611612A (en) | 1994-01-21 |
Family
ID=15874563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4168792A Pending JPH0611612A (en) | 1992-06-26 | 1992-06-26 | Production of color liquid-crystal element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0611612A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6082372A (en) * | 1998-06-19 | 2000-07-04 | Katsushika Co., Ltd. | Dispenser container for rod-like cosmetic |
| US6933003B2 (en) * | 2002-06-13 | 2005-08-23 | General Motors Corporation | Method of making membrane electrode assemblies |
-
1992
- 1992-06-26 JP JP4168792A patent/JPH0611612A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6082372A (en) * | 1998-06-19 | 2000-07-04 | Katsushika Co., Ltd. | Dispenser container for rod-like cosmetic |
| US6933003B2 (en) * | 2002-06-13 | 2005-08-23 | General Motors Corporation | Method of making membrane electrode assemblies |
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