JPS62215235A - Process for forming color filter - Google Patents
Process for forming color filterInfo
- Publication number
- JPS62215235A JPS62215235A JP61057041A JP5704186A JPS62215235A JP S62215235 A JPS62215235 A JP S62215235A JP 61057041 A JP61057041 A JP 61057041A JP 5704186 A JP5704186 A JP 5704186A JP S62215235 A JPS62215235 A JP S62215235A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- color filter
- water
- soluble resin
- dyeing
- 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
- 238000000034 method Methods 0.000 title claims description 8
- 239000011347 resin Substances 0.000 claims abstract description 37
- 229920005989 resin Polymers 0.000 claims abstract description 37
- 239000000758 substrate Substances 0.000 claims abstract description 35
- 239000004094 surface-active agent Substances 0.000 claims abstract description 8
- 238000004043 dyeing Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 6
- 206010034972 Photosensitivity reaction Diseases 0.000 abstract description 5
- 230000036211 photosensitivity Effects 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 238000010019 resist printing Methods 0.000 abstract 1
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 108010010803 Gelatin Proteins 0.000 description 3
- 229920000159 gelatin Polymers 0.000 description 3
- 239000008273 gelatin Substances 0.000 description 3
- 235000019322 gelatine Nutrition 0.000 description 3
- 235000011852 gelatine desserts Nutrition 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000010186 staining Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 235000021384 green leafy vegetables Nutrition 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Optical Filters (AREA)
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、カラー液晶表示素子の透明基板に電極に対
向して設けるカラーフィルタの形成方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for forming a color filter provided on a transparent substrate of a color liquid crystal display element so as to face electrodes.
一般に液晶表示素子は、走査電極基板と信号電極基板と
を液晶を挟んで対向配置し、上記両基板の任意の部分の
電極間に電圧を印加してその部分の液晶分子の配列を変
化させ、この変化で光の透過をｌｌｌｌ１ｍシ、この制
御に基づいて画像等を表示するものである。そしてカラ
ー液晶表示素子においては、信号電極基板の内面に電極
と対向してカラーフィルタを設け、このカラーフィルタ
を通してカラー表示を行なうようになっている。In general, a liquid crystal display element has a scanning electrode substrate and a signal electrode substrate placed opposite to each other with a liquid crystal in between, and applies a voltage between the electrodes at arbitrary portions of both substrates to change the arrangement of liquid crystal molecules at that portion. This change reduces the transmission of light, and images and the like are displayed based on this control. In the color liquid crystal display element, a color filter is provided on the inner surface of the signal electrode substrate so as to face the electrodes, and color display is performed through this color filter.
カラーフィルタを形成する工程について説明すると、ま
ずＮｔｉが配列する基板の上に一様に染色性および感光
性を有する水溶性樹脂を塗布し、ついでこの水溶性樹脂
の所要部分を露光および現像し、この現像した部分を染
色してカラーフィルタとする。To explain the process of forming a color filter, first, a water-soluble resin having dyeability and photosensitivity is uniformly applied onto a substrate on which Nti is arranged, and then required portions of this water-soluble resin are exposed and developed. This developed area is dyed to form a color filter.
ところがガラス製の基板の上に塗布する水溶性樹脂は、
これが水溶性である故に、表面張力が大きく、基板に対
する濡れ性（馴染み性）が悪く、このため基板の全体に
この水溶性樹脂を広げるためには、多量の水溶性樹脂を
使用しなければならず、経済的に大きな不利を招き、ま
たその強い表面張力により樹脂膜にピンホールが発生し
ゃすくなり、信頼性が低下するという問題があった。However, the water-soluble resin applied to the glass substrate is
Because it is water-soluble, it has high surface tension and poor wettability (compatibility) with the substrate, so a large amount of water-soluble resin must be used to spread it over the entire substrate. This poses a major economic disadvantage, and its strong surface tension tends to cause pinholes to form in the resin film, reducing reliability.
この発明はこのような点に着目してなされたもので、そ
の目的とするところは、カラーフィルタの基質を作る水
溶性樹脂の使用量を低減して経済性の向上を図り、かつ
ピンホールの発生を防止することができるようにしたカ
ラーフィルタの形成方法を提供することにある。This invention was made with attention to these points, and its purpose is to improve economic efficiency by reducing the amount of water-soluble resin used to form the substrate of color filters, and to reduce the number of pinholes. It is an object of the present invention to provide a method for forming a color filter that can prevent this from occurring.
すなわちこの発明は、電極が配置した基板の上に、界面
活性剤を添加した染色性および感光性を有する水溶性樹
脂を塗布し、ついでこの水溶性樹脂の所要部分を露光お
よび現像し、この現像した部分を染色して上記電極を覆
うカラーフィルタを形成するようにしたものである。That is, this invention applies a dyeable and photosensitive water-soluble resin containing a surfactant onto a substrate on which electrodes are disposed, and then exposes and develops a required portion of this water-soluble resin. The colored portion is dyed to form a color filter covering the electrode.
以下、この発明の一実施例について図面を参照して説明
する。An embodiment of the present invention will be described below with reference to the drawings.
第２図において、１はガラス製の透明な電極基板で、こ
の電極基板１の片面（上面）には酸化インジュウムなど
の透明導電膜からなる複数の電極２が配列形成されてい
る。In FIG. 2, reference numeral 1 denotes a transparent electrode substrate made of glass, and on one side (upper surface) of this electrode substrate 1, a plurality of electrodes 2 made of a transparent conductive film such as indium oxide are arranged and formed.
しかして、第１図に示すように、まず電極基板１を洗浄
してその上面の上にグリユー、ゼラチン、カゼインなど
の染色性および感光性を有する水溶性樹脂を全域に亙っ
てスピンナーやコールコートなどの手段により塗布し、
樹脂１０３を形成する（工程ａ）。ここで、水溶性樹脂
には予め界面活性剤を添加しである。すなわち例えば水
溶性樹脂がゼラチンの場合においては、フッ素系の界面
活性剤（住友３Ｍ社のフロラードＦＣ−４３０など）を
添加する。As shown in FIG. 1, first, the electrode substrate 1 is cleaned, and a water-soluble resin having dyeability and photosensitivity, such as greens, gelatin, and casein, is applied over the entire area using a spinner or coater. Apply by means such as coating,
A resin 103 is formed (step a). Here, a surfactant is added to the water-soluble resin in advance. That is, for example, when the water-soluble resin is gelatin, a fluorine-based surfactant (such as Florard FC-430 manufactured by Sumitomo 3M) is added.
このよ゛うに界面活性剤が添加された水溶性樹脂におい
ては、ガラス製の電極基板１に対する濡れ性が改善され
、その電極基板１によく馴染んで付着し、したがって少
ない使用量で電極基板１の上面全域に水溶性樹脂を広く
拡散させて均一な樹脂膜３を形成でき、またピンホール
の発生も防止することができる。The water-soluble resin to which a surfactant is added has improved wettability with respect to the glass electrode substrate 1, and adheres well to the electrode substrate 1, so that it can be used in a small amount to form the electrode substrate 1. A uniform resin film 3 can be formed by widely diffusing the water-soluble resin over the entire upper surface, and pinholes can also be prevented from occurring.
このようにして水溶性樹脂により樹脂膜３を形成したの
ちに、この樹脂ｇｌ１３をプリベークするとともに、そ
の上方にフォトマスク４を配置し、このフォトマスク４
の開口窓４ａを通して樹脂Ｔ！Ｉ３の所要部分、すなわ
ち第一色目の例えば赤色のカラーフィルタを施すべき電
極２に対応する部分に紫外線を照射して露光し、光重合
により硬化させる〈工程ｂ）。ついで、その露光部を水
、有機溶剤などで現像してカラーフィルターの基質５と
し、他の部分を洗い流す（工程Ｃ）。さらに基質５の膜
を引締めるためにボストベークを行なう。こののち、基
質５を所定の色特性を有する染色液に浸して染色し、第
一色目の赤色のカラーフィルタ５Ｒを形成する（工程ｄ
）。そして、カラーフィルタ５Ｒの染色液を基質５に固
着させ、かつこのカラーフィルタ５Ｒに他の染色液が染
着しないように、電極基板１の上面の全体に、タンニン
・吐酒石法や樹脂コート法で第一層目の防染膜６を形成
する（工程ｅ）。After forming the resin film 3 from the water-soluble resin in this way, this resin GL13 is prebaked, and a photomask 4 is placed above it.
Resin T! through the opening window 4a! A required portion of I3, that is, a portion corresponding to the electrode 2 to which a first color, for example, red color filter is to be applied, is exposed to ultraviolet rays and cured by photopolymerization (step b). Then, the exposed area is developed with water, an organic solvent, etc. to form the substrate 5 of the color filter, and the other areas are washed away (step C). Furthermore, a boost bake is performed to tighten the film of the substrate 5. Thereafter, the substrate 5 is immersed in a dyeing liquid having predetermined color characteristics to be dyed to form a first red color filter 5R (step d).
). Then, in order to fix the staining liquid of the color filter 5R to the substrate 5 and prevent other staining liquids from staining the color filter 5R, the entire upper surface of the electrode substrate 1 is coated with a tannin/tartarstone method or a resin coating. A first layer resisting film 6 is formed by a method (step e).
このようにして第一色目のカラーフィルり５Ｒを形成し
たのちには、上記ａ−ｅの工程を再び繰返して、第３図
に示すように、第二色目の例えば緑色のカラーフィルタ
を施すべき電極２の上に同５一
様に緑色のカラーフィルタ５Ｇを形成し、かつこのカラ
ーフィルタ５Ｇを第二層目の防染膜７で覆い、さらに工
程の繰返しにより、第三色目の例えば青色のカラーフィ
ルタを施すべき電極２の上に同様に青色のカラーフィル
タ６Ｂを形成し、かつこのカラフィルタ６Ｂを第三層目
の防染１８で覆う。そして、最後に電極基板１の上の全
域に各電極２を覆うように配向膜９を形成する。After forming the first color filter 5R in this way, repeat the steps a to e above to apply a second color filter, for example, green, as shown in FIG. A green color filter 5G is uniformly formed on the electrode 2, this color filter 5G is covered with a second layer of anti-dye coating 7, and the process is repeated to form a third color, for example, blue. A blue color filter 6B is similarly formed on the electrode 2 to which the color filter is to be applied, and this color filter 6B is covered with a third layer of resist dyeing 18. Finally, an alignment film 9 is formed over the entire area on the electrode substrate 1 so as to cover each electrode 2.
なお、上記実施例においては、水溶性樹脂として、グリ
ユー、ゼラチン等の天然の樹脂を例に挙げたが、゛アク
リル系、メタクリル系、ポリアミド系などの合成樹脂に
も水溶性のものがあるから、このような合成の樹脂であ
っても何ら差支えなく、この発明における水溶性樹脂と
して使用することができる。In the above examples, natural resins such as gris and gelatin were used as water-soluble resins, but synthetic resins such as acrylic, methacrylic, and polyamide resins are also water-soluble. There is no problem with such a synthetic resin, and it can be used as the water-soluble resin in the present invention.
〔発明の効果〕
以上説明したようにこの発明によれば、染色性および感
光性を有する水溶性樹脂に界面活性剤を添加し、これを
基板の上に塗布するようにしたから、基板に対する濡れ
性が改善され、したがって−〇−
水溶性樹脂が僅かな量であっても基板の上に広く拡散さ
せて均一に分布させることができ、このため水溶性樹脂
の使用量を抑えて経済性の向上を図れ、また水溶性樹脂
の広がりがよいから、ピンホールの発生を防止でき、信
頼性の向上を図ることができるという効果を奏する。[Effects of the Invention] As explained above, according to the present invention, a surfactant is added to a water-soluble resin having dyeability and photosensitivity, and this is applied onto a substrate, so that the wettability of the substrate is reduced. Therefore, even a small amount of water-soluble resin can be widely spread and uniformly distributed on the substrate, which reduces the amount of water-soluble resin used and improves economic efficiency. Moreover, since the water-soluble resin spreads well, the occurrence of pinholes can be prevented and reliability can be improved.
第１図はこの発明の一実施例によるカラーフィルタの形
成工程を順に示す断面図、第２図は同実施例における基
板の断面図、第３図は同実施例による工程でカラーフィ
ルタを形成した状態の断面図である。
１・・・基板、２・・・電極、３・・・水溶性樹脂の樹
脂膜、５Ｒ，５Ｇ、５Ｂ・・・カラーフィルタ。
出願人代理人 弁理士 鈴江武彦
第１区FIG. 1 is a sectional view sequentially showing the steps of forming a color filter according to an embodiment of the present invention, FIG. 2 is a sectional view of a substrate in the same embodiment, and FIG. 3 is a sectional view showing a color filter formed by the steps according to the embodiment. It is a sectional view of the state. DESCRIPTION OF SYMBOLS 1... Substrate, 2... Electrode, 3... Resin film of water-soluble resin, 5R, 5G, 5B... Color filter. Applicant's representative Patent attorney Takehiko Suzue District 1
Claims (1)
性および感光性を有する水溶性樹脂を塗布し、ついでこ
の水溶性樹脂の所要部分を露光および現像し、この現像
した部分を染色して上記電極を覆うカラーフィルタを形
成することを特徴としたカラーフィルタの形成方法。A dyeable and photosensitive water-soluble resin containing a surfactant is applied onto the substrate on which the electrodes are placed, and then the required areas of this water-soluble resin are exposed and developed, and the developed areas are dyed. A method for forming a color filter, comprising: forming a color filter covering the electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61057041A JPS62215235A (en) | 1986-03-17 | 1986-03-17 | Process for forming color filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61057041A JPS62215235A (en) | 1986-03-17 | 1986-03-17 | Process for forming color filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62215235A true JPS62215235A (en) | 1987-09-21 |
Family
ID=13044357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61057041A Pending JPS62215235A (en) | 1986-03-17 | 1986-03-17 | Process for forming color filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62215235A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02804A (en) * | 1987-12-18 | 1990-01-05 | Fuji Photo Film Co Ltd | Formation of multicolor pattern for color filter |
| JPH02168203A (en) * | 1988-12-22 | 1990-06-28 | Casio Comput Co Ltd | Forming method for color filter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5098517A (en) * | 1973-12-28 | 1975-08-05 | ||
| JPS5164550A (en) * | 1974-12-02 | 1976-06-04 | Mitsubishi Electric Corp | GOSEIJUSHI FUNTAITOSOHOHO |
| JPS55115003A (en) * | 1979-02-28 | 1980-09-04 | Hitachi Ltd | Production of color filter |
-
1986
- 1986-03-17 JP JP61057041A patent/JPS62215235A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5098517A (en) * | 1973-12-28 | 1975-08-05 | ||
| JPS5164550A (en) * | 1974-12-02 | 1976-06-04 | Mitsubishi Electric Corp | GOSEIJUSHI FUNTAITOSOHOHO |
| JPS55115003A (en) * | 1979-02-28 | 1980-09-04 | Hitachi Ltd | Production of color filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02804A (en) * | 1987-12-18 | 1990-01-05 | Fuji Photo Film Co Ltd | Formation of multicolor pattern for color filter |
| JPH02168203A (en) * | 1988-12-22 | 1990-06-28 | Casio Comput Co Ltd | Forming method for color filter |
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