JPH06194671A - Composition for liquid crystal oriented film, production of liquid crystal oriented film, liquid crystal oriented film, liquid crystal clamping substrate and liquid crystal display element - Google Patents
Composition for liquid crystal oriented film, production of liquid crystal oriented film, liquid crystal oriented film, liquid crystal clamping substrate and liquid crystal display elementInfo
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- JPH06194671A JPH06194671A JP34304892A JP34304892A JPH06194671A JP H06194671 A JPH06194671 A JP H06194671A JP 34304892 A JP34304892 A JP 34304892A JP 34304892 A JP34304892 A JP 34304892A JP H06194671 A JPH06194671 A JP H06194671A
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- liquid crystal
- alignment film
- crystal alignment
- composition
- oriented film
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Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は液晶配向膜用組成物、液
晶配向膜の製造法、液晶配向膜、液晶挾持基板および液
晶表示素子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composition for liquid crystal alignment film, a method for producing a liquid crystal alignment film, a liquid crystal alignment film, a liquid crystal holding substrate and a liquid crystal display device.
【0002】[0002]
【従来の技術】従来、液晶表示素子用の配向膜として、
例えばピロメリット酸二無水物と4,4′−ジアミノジ
フェニルエーテル縮合のポリイミド(特公昭55−10
18号公報)をはじめとし、最近では表示素子の透明性
あるいは液晶の高プレチルト角の要求から、これを目的
とするポリイミドが提案されている(特開昭63−25
9515号、特開昭64−25126号公報)。2. Description of the Related Art Conventionally, as an alignment film for a liquid crystal display device,
For example, polyimide of pyromellitic dianhydride and 4,4'-diaminodiphenyl ether condensation (Japanese Patent Publication No. 55-10).
No. 18), and recently, in view of the requirement for the transparency of the display element or the high pretilt angle of the liquid crystal, a polyimide intended for this purpose has been proposed (JP-A-63-25).
9515, JP-A-64-25126).
【0003】しかし、最近の液晶表示素子の高精細化に
伴い、液晶配向膜にはプレチルト角以外に表示の残像特
性、電圧保持特性、ラビング時の帯電特性の種々の特性
を改良することが要求されるようになってきた。そのた
め、従来用いられてきたポリアミド酸の主鎖骨格への側
鎖の導入でプレチルト角を変更する方法では残像特性、
その他の特性を変更することなくプレチルト角のみを制
御することが困難になってきた。However, with the recent trend toward higher definition of liquid crystal display devices, it is required for the liquid crystal alignment film to improve various characteristics other than the pretilt angle, such as display afterimage characteristics, voltage holding characteristics, and charging characteristics during rubbing. It has started to be done. Therefore, in the method of changing the pretilt angle by introducing a side chain into the main chain skeleton of polyamic acid that has been conventionally used, afterimage characteristics,
It has become difficult to control only the pretilt angle without changing other characteristics.
【0004】[0004]
【発明が解決しようとする課題】本発明は、前記の従来
技術の欠点を解決し、残像特性、その他の特性を変更す
ることなくプレチルト角を制御することができる液晶配
向膜用組成物、液晶配向膜の製造法、この組成物より得
られる液晶配向膜、この配向膜を有する液晶挾持基板お
よび液晶表示素子を提供するものである。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art and is capable of controlling the pretilt angle without changing the afterimage characteristics and other characteristics, and a composition for liquid crystal alignment film, liquid crystal. The present invention provides a method for producing an alignment film, a liquid crystal alignment film obtained from this composition, a liquid crystal holding substrate having the alignment film, and a liquid crystal display device.
【0005】[0005]
【課題を解決するための手段】本発明者らは、前記の従
来技術の問題に鑑み、鋭意研究した結果、ポリアミド酸
溶液中に特定のジアミン化合物を含む組成物を用いれ
ば、他の特性を低下させることなくプレチルト角を制御
できることを見出し本発明に到達した。DISCLOSURE OF THE INVENTION The inventors of the present invention have conducted intensive studies in view of the above-mentioned problems of the prior art, and as a result, when a composition containing a specific diamine compound in a polyamic acid solution was used, other characteristics were obtained. The present invention has been achieved by finding that the pretilt angle can be controlled without lowering it.
【0006】すなわち、本発明は、(1)ジアミン化合
物およびテトラカルボン酸二無水物を溶媒中で反応させ
て得られるポリアミド酸溶液および(2)一般式〔1〕That is, the present invention provides (1) a polyamic acid solution obtained by reacting a diamine compound and a tetracarboxylic dianhydride in a solvent, and (2) a general formula [1].
【化2】 (式中、nは4から18までの整数を示す)で表される
ジアミン化合物を含有してなる液晶配向膜用組成物、こ
の組成物を用いる液晶配向膜の製造法、この組成物を用
いて形成した液晶配向膜、この配向膜を有する液晶挾持
基板及び液晶表示素子に関する。[Chemical 2] (In the formula, n represents an integer from 4 to 18) A composition for a liquid crystal alignment film containing a diamine compound, a method for producing a liquid crystal alignment film using the composition, and the composition The present invention relates to a liquid crystal alignment film formed by the above method, a liquid crystal holding substrate having the alignment film, and a liquid crystal display element.
【0007】配向安定性およびプレチルト角の変化の点
から一般式〔1〕で表されるジアミン化合物のnは4か
ら18までの整数とされる。From the viewpoints of orientation stability and changes in the pretilt angle, n of the diamine compound represented by the general formula [1] is an integer from 4 to 18.
【0008】本発明に用いられる上記の一般式〔1〕で
表されるジアミン化合物としては、例えば1,4−ジア
ミノブタン、1,5−ジアミノペンタン、1,6−ジア
ミノヘキサン、1,7−ジアミノヘプタン、1,8−ジ
アミノオクタン、1,9−ジアミノノナン、1,10−
ジアミノデカン、1,11−ジアミノウンデカン、1,
12−ジアミノドデカン、1,13−ジアミノトリデカ
ン、1,14−ジアミノテトラデカン、1,15−ジア
ミノペンタデカン、1,16−ジアミノヘキサデカン、
1,17−ジアミノヘプタデカン、1,18−ジアミノ
オクタデカンなどが挙げられ、これらは単独でまたは2
種以上を組み合わせて使用することができる。Examples of the diamine compound represented by the above general formula [1] used in the present invention include 1,4-diaminobutane, 1,5-diaminopentane, 1,6-diaminohexane and 1,7-. Diaminoheptane, 1,8-diaminooctane, 1,9-diaminononane, 1,10-
Diaminodecane, 1,11-diaminoundecane, 1,
12-diaminododecane, 1,13-diaminotridecane, 1,14-diaminotetradecane, 1,15-diaminopentadecane, 1,16-diaminohexadecane,
1,17-diaminoheptadecane, 1,18-diaminooctadecane, etc., which may be used alone or
Combinations of more than one species can be used.
【0009】本発明に用いられるポリアミド酸は、ジア
ミン化合物およびテトラカルボン酸二無水物を溶媒中で
反応させて得られるものであれば特に制限はない。ジア
ミン化合物とテトラカルボン酸二無水物とはほぼ等モル
として反応させることが好ましい。The polyamic acid used in the present invention is not particularly limited as long as it is obtained by reacting a diamine compound and a tetracarboxylic acid dianhydride in a solvent. It is preferable that the diamine compound and the tetracarboxylic dianhydride be reacted in substantially equimolar amounts.
【0010】ジアミン化合物としては、例えばp−フェ
ニレンジアミン、m−フェニレンジアミン、ジアミノジ
フェニルエーテル、ジアミノジフェニルメタン、2,2
−ジアミノジフェニルプロパン、ジアミノジフェニルス
ルホン、ジアミノベンゾフェノン、ジアミノナフタレ
ン、ジアミノターフェニル、1,4−ビス(4−アミノ
フェノキシ)ベンゼン、2,2−ビス(4−(4−アミ
ノフェノキシ)フェニル)プロパン、2,2−ビス(4
−(4−アミノフェノキシ)フェニル)−1,1,1,
3,3,3−ヘキサフルオロプロパンなどの芳香族ジア
ミン、ジアミノジシクロヘキシルエーテル、ジアミノシ
クロヘキサンなどの脂環式ジアミン、1,6−ジアミノ
ヘキサン、1,8−ジアミノオクタンなどの脂肪族ジア
ミン、ジアミノシロキサン、ジアミノシランなどが挙げ
られる。一般式〔1〕で表されるジアミン化合物を用い
てもよい。これらは2種以上を組み合わせて使用するこ
ともできる。Examples of the diamine compound include p-phenylenediamine, m-phenylenediamine, diaminodiphenyl ether, diaminodiphenylmethane and 2,2.
-Diaminodiphenylpropane, diaminodiphenyl sulfone, diaminobenzophenone, diaminonaphthalene, diaminoterphenyl, 1,4-bis (4-aminophenoxy) benzene, 2,2-bis (4- (4-aminophenoxy) phenyl) propane, 2,2-bis (4
-(4-aminophenoxy) phenyl) -1,1,1,
Aromatic diamines such as 3,3,3-hexafluoropropane, alicyclic diamines such as diaminodicyclohexyl ether and diaminocyclohexane, aliphatic diamines such as 1,6-diaminohexane and 1,8-diaminooctane, diaminosiloxane, Diaminosilane etc. are mentioned. You may use the diamine compound represented by General formula [1]. These can also be used in combination of two or more.
【0011】またテトラカルボン酸二無水物としては、
例えばピロメリット酸二無水物、3,3′,4,4′−
ビフェニルテトラカルボン酸二無水物、3,3′,4,
4′−ベンゾフェノンテトラカルボン酸二無水物、2,
3,6,7−ナフタレンテトラカルボン酸二無水物、
1,4,5,8−ナフタレンテトラカルボン酸二無水
物、1,2,5,6−テトラカルボキシナフタレン二無
水物、2,2−ビス(3,4カルボキシフェニル)プロ
パン二無水物、2,2−ビス(3,4−ジカルボキシフ
ェニル)−1,1,1,3,3,3−ヘキサフルオロプ
ロパン二無水物、3,3′,4,4′−ジフェニルスル
ホンテトラカルボン酸二無水物、3,4,9,10−ペ
リレンテトラカルボン酸二無水物、ブタンテトラカルボ
ン酸二無水物、シクロブタンテトラカルボン酸二無水
物、シクロペンタンテトラカルボン酸二無水物、シクロ
ヘキサンテトラカルボン酸二無水物などが挙げられ、こ
れらは2種以上を組み合わせて使用することもできる。As the tetracarboxylic dianhydride,
For example, pyromellitic dianhydride, 3,3 ', 4,4'-
Biphenyl tetracarboxylic dianhydride, 3,3 ', 4
4'-benzophenone tetracarboxylic dianhydride, 2,
3,6,7-naphthalenetetracarboxylic dianhydride,
1,4,5,8-naphthalenetetracarboxylic dianhydride, 1,2,5,6-tetracarboxynaphthalene dianhydride, 2,2-bis (3,4carboxyphenyl) propane dianhydride, 2, 2-bis (3,4-dicarboxyphenyl) -1,1,1,3,3,3-hexafluoropropane dianhydride, 3,3 ', 4,4'-diphenylsulfone tetracarboxylic dianhydride , 3,4,9,10-perylenetetracarboxylic dianhydride, butanetetracarboxylic dianhydride, cyclobutanetetracarboxylic dianhydride, cyclopentanetetracarboxylic dianhydride, cyclohexanetetracarboxylic dianhydride, etc. And two or more of these may be used in combination.
【0012】また、反応溶媒としては、例えばN−メチ
ル−2−ピロリドン、N,N−ジメチルホルムアミド、
N,N−ジメチルアセトアミド、ジメチルスルホキシ
ド、テトラメチルスルホン、1,4−ジオキサンなどが
単独でまたは2種以上を組み合わせて使用される。As the reaction solvent, for example, N-methyl-2-pyrrolidone, N, N-dimethylformamide,
N, N-dimethylacetamide, dimethyl sulfoxide, tetramethyl sulfone, 1,4-dioxane and the like are used alone or in combination of two or more kinds.
【0013】本発明の液晶配向膜用組成物は、前記反応
によって得られたポリアミド酸溶液に前記一般式〔1〕
で表されるジアミン化合物を添加し、充分混合すること
によって得られる。The composition for liquid crystal alignment film of the present invention is prepared by adding the polyamic acid solution obtained by the above reaction to the above-mentioned general formula [1].
It is obtained by adding the diamine compound represented by and mixing them well.
【0014】一般式〔1〕で表されるジアミン化合物の
添加量は、液晶配向膜の成膜性の観点から、ポリアミド
酸に対して0.05〜40重量%の範囲とすることが好
ましい。From the viewpoint of the film-forming property of the liquid crystal alignment film, the amount of the diamine compound represented by the general formula [1] added is preferably in the range of 0.05 to 40% by weight based on the polyamic acid.
【0015】本発明になる液晶配向膜用組成物は100
〜400℃に加熱することおよび/または無水酢酸など
の脱水剤で化学処理することによりポリイミドとされ
る。液晶挾持基板上の液晶に面する側に電極を設け、該
基板および電極上に液晶配向膜組成物より得られる液晶
配向膜を形成して液晶表示素子とされる。The composition for liquid crystal alignment film according to the present invention is 100
A polyimide is obtained by heating to ˜400 ° C. and / or chemical treatment with a dehydrating agent such as acetic anhydride. An electrode is provided on the side of the liquid crystal holding substrate facing the liquid crystal, and a liquid crystal alignment film obtained from the liquid crystal alignment film composition is formed on the substrate and the electrode to obtain a liquid crystal display element.
【0016】本発明のポリイミド層の液晶基板上の形成
は上記の液晶配向膜用組成物を、予め例えばITO(I
ndium Tin Oxide)等の透明電極が形成
されたガラス基板上に塗布した後、乾燥、脱水閉環させ
てポリイミド層とすることにより行われる。塗布方法と
しては、浸漬法、印刷法、吹き付け法等が用いられる。
脱水閉環温度は100〜400℃、好ましくは150〜
300℃の範囲で任意に選択することができる。また加
熱時間は1分〜6時間、好ましくは1分〜3時間とされ
る。To form the polyimide layer of the present invention on the liquid crystal substrate, the above composition for a liquid crystal alignment film is prepared in advance by using, for example, ITO (I
It is carried out by coating a glass substrate on which a transparent electrode such as ndium tin oxide) is formed, followed by drying and dehydration ring closure to form a polyimide layer. As a coating method, a dipping method, a printing method, a spraying method or the like is used.
The dehydration ring-closing temperature is 100 to 400 ° C., preferably 150 to 400 ° C.
It can be arbitrarily selected within the range of 300 ° C. The heating time is 1 minute to 6 hours, preferably 1 minute to 3 hours.
【0017】本発明のポリイミド層にはガラス基板とポ
リイミド層との密着性をよくするためにこの間にシラン
カップリング剤、チタンカップリング剤等のカップリン
グ剤を用いてもよい。In the polyimide layer of the present invention, a coupling agent such as a silane coupling agent or a titanium coupling agent may be used in order to improve the adhesion between the glass substrate and the polyimide layer.
【0018】このようにして形成されたポリイミド層
は、表面をラビングすることによって液晶配向膜として
用いられる。液晶配向膜を有する液晶表示基板を用いて
公知の方法により液晶表示素子を得ることができる。The polyimide layer thus formed is used as a liquid crystal alignment film by rubbing the surface. A liquid crystal display device can be obtained by a known method using a liquid crystal display substrate having a liquid crystal alignment film.
【0019】[0019]
【作用】本発明におけるポリイミドは、特定のジアミン
化合物をポリアミド酸に添加しているため、ポリアミド
酸に固有の特性を損なうことなしにプレチルト角を制御
することが可能になるものと考えらえれる。In the polyimide of the present invention, since the specific diamine compound is added to the polyamic acid, it is considered that the pretilt angle can be controlled without deteriorating the characteristics peculiar to the polyamic acid. .
【0020】[0020]
【実施例】以下、本発明を実施例により説明する。EXAMPLES The present invention will be described below with reference to examples.
【0021】実施例1 2,2−ビス〔4−(4−アミノフェノキシ)フェニ
ル〕プロパン41.1g(0.1モル)にN−メチル−
2−ピロリドン378gを添加し、充分撹拌した後、ピ
ロメリット酸二無水物10.9g(0.05モル)およ
び3,3′,4,4′−ビフェニルテトラカルボン酸二
無水物14.7g(0.05モル)を加え、5℃で10
時間反応させたところ、淡黄色の粘稠な液体となった。
この溶液に1,4−ジアミノブタン10.0g(15重
量%)を添加し、8時間充分混合した。この溶液を粘度
調整し2枚のITO付きガラス基板上にスピンナーで塗
布し、250℃で30分加熱し、溶媒の除去およびポリ
アミド酸の脱水閉環を行い、700Åのポリイミド層を
形成した。2枚のガラス基板上のこの層の表面をラビン
グ処理して液晶配向膜として液晶挾持基板を得、これを
ラビング方向がアンチパラレルになるように2枚のポリ
イミド層を対向させて組み合わせ、周りをエポキシ系シ
ール剤EN−1000(日立化成工業株式会社製商品
名)で封止し、内部に液晶ZLI−2293(メルク社
製商品名)を封入し、液晶セルを形成した。次にこの液
晶セルを安定させるためエージング処理として液晶ZL
I−2293のTNI(85℃)以上の温度である130
℃で1時間加熱した後、プレチルト角をクリスタルロー
テーション法で測定したところ、プレチルト角は5.4
°であり、1,4−ジアミノブタン10.0g(15重
量%)を添加しない場合のプレチルト角4.6°よりプ
レチルト角が高くなっていた。次に前記溶液を用いて前
記と同様の方法で640×200ドットになるようにI
TO透明電極が形成された基板上にポリイミド層を形成
し、この表面をラビング処理し、上記と同様にして24
0°ツイストになるようにセルを組み立てて、カイラル
剤CB−15(メルク社製商品名)を添加した上記の液
晶を封入し、エージング処理を行って液晶表示素子を作
製した。該液晶表示素子は、640×200ドットで駆
動でき、ドメイン等の配向不良が発生せずコントラスト
良好で高表示品質であり、表示素子特性は添加しない場
合と同じであった。Example 1 41.1 g (0.1 mol) of 2,2-bis [4- (4-aminophenoxy) phenyl] propane was treated with N-methyl-
After adding 378 g of 2-pyrrolidone and stirring sufficiently, 10.9 g (0.05 mol) of pyromellitic dianhydride and 14.7 g of 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride ( 0.05 mol) and added at 5 ° C for 10
After reacting for a time, it became a pale yellow viscous liquid.
To this solution, 10.0 g (15% by weight) of 1,4-diaminobutane was added and thoroughly mixed for 8 hours. The viscosity of this solution was adjusted, and the solution was applied onto two glass substrates with ITO by a spinner and heated at 250 ° C. for 30 minutes to remove the solvent and dehydrate and ring-close the polyamic acid to form a 700 Å polyimide layer. The surface of this layer on two glass substrates is rubbed to obtain a liquid crystal holding substrate as a liquid crystal alignment film, which is combined with two polyimide layers facing each other so that the rubbing directions are anti-parallel, and the surroundings. A liquid crystal cell was formed by sealing with an epoxy sealant EN-1000 (trade name, manufactured by Hitachi Chemical Co., Ltd.) and enclosing liquid crystal ZLI-2293 (trade name, manufactured by Merck & Co., Inc.) therein. Next, in order to stabilize this liquid crystal cell, liquid crystal ZL is used as an aging treatment.
130, which is the temperature above T NI (85 ° C) of I-2293
After heating at ℃ for 1 hour, the pretilt angle was measured by the crystal rotation method. The pretilt angle was 5.4.
And the pretilt angle was higher than the pretilt angle of 4.6 ° in the case where 10.0 g (15% by weight) of 1,4-diaminobutane was not added. Then, using the above solution, the same method as described above was performed to obtain 640 × 200 dots.
A polyimide layer is formed on the substrate on which the TO transparent electrode is formed, and the surface of the polyimide layer is rubbed.
A cell was assembled so as to have a twist of 0 °, the above liquid crystal to which a chiral agent CB-15 (trade name, manufactured by Merck & Co., Inc.) was added, and the liquid crystal display element was manufactured by performing aging treatment. The liquid crystal display device was capable of being driven by 640 × 200 dots, had good contrast and good display quality without causing alignment defects such as domains, and the display device characteristics were the same as when no addition was made.
【0022】実施例2 日立化成工業株式会社製STN用液晶配向膜材料LQ−
1800(ポリアミド酸溶液、樹脂分14.7重量%)
100gに1,9−ジアミノノナン0.74g(5重量
%)を添加し、10時間充分混合した。この溶液を用い
て実施例1と同様の方法で処理して250℃で60分加
熱して液晶セルを形成し、130℃で1時間加熱するこ
とによりエージング処理した後、プレチルト角を測定し
たところ、プレチルト角は7.3°であり、LQ−18
00を用いた場合のプレチルト角6.3°よりプレチル
ト角が高くなっていた。さらにこの溶液を用いて実施例
1と同様の方法で260°ツイストの液晶表示素子を形
成したが、該液晶表示素子は、640×200ドットで
駆動でき、ドメイン等の配向不良が発生せずコントラス
ト良好で高表示品質であり、表示素子特性は添加しない
場合と同じであった。Example 2 Liquid crystal alignment film material for STN manufactured by Hitachi Chemical Co., Ltd. LQ-
1800 (polyamic acid solution, resin content 14.7% by weight)
0.74 g (5% by weight) of 1,9-diaminononane was added to 100 g, and they were sufficiently mixed for 10 hours. This solution was treated in the same manner as in Example 1 and heated at 250 ° C. for 60 minutes to form a liquid crystal cell, which was then aged by heating at 130 ° C. for 1 hour, and then the pretilt angle was measured. , The pretilt angle is 7.3 °, and LQ-18
The pretilt angle was higher than the pretilt angle of 6.3 ° when 00 was used. Further, using this solution, a liquid crystal display device having a 260 ° twist was formed in the same manner as in Example 1. The liquid crystal display device could be driven at 640 × 200 dots, and alignment defects such as domains did not occur, resulting in contrast. The display quality was good, and the display element characteristics were the same as those without addition.
【0023】[0023]
【発明の効果】本発明の液晶配向膜用組成物によって液
晶配向膜を形成する場合、液晶表示素子の素子特性を変
えることなくプレチルト角を変更できる。またこの液晶
配向膜を有する液晶挾持基板を使用して作製した液晶表
示素子はドメイン等の配向不良が発生せず電気光学特性
上高い表示品質を有するため、本発明の液晶配向膜用組
成物は、高表示品質の液晶表示素子に用いることが好ま
しい。When the composition for liquid crystal alignment film of the present invention is used to form a liquid crystal alignment film, the pretilt angle can be changed without changing the device characteristics of the liquid crystal display device. Further, since the liquid crystal display device produced using the liquid crystal holding substrate having this liquid crystal alignment film has high display quality in electro-optical characteristics without causing alignment defects such as domains, the composition for liquid crystal alignment film of the present invention is It is preferably used for a liquid crystal display device having high display quality.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 任廷 茨城県日立市東町四丁目13番1号 日立化 成工業株式会社山崎工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sato Court 4-13-1, Higashimachi, Hitachi City, Ibaraki Prefecture Hitachi Chemical Co., Ltd. Yamazaki Factory
Claims (10)
ボン酸二無水物を溶媒中で反応させて得られるポリアミ
ド酸溶液および(2)一般式〔1〕 【化1】 (式中、nは4から18までの整数を示す)で表される
ジアミン化合物を含有してなる液晶配向膜用組成物。1. A polyamic acid solution obtained by reacting (1) a diamine compound and a tetracarboxylic dianhydride in a solvent, and (2) a general formula [1]: A composition for a liquid crystal alignment film comprising a diamine compound represented by the formula (n represents an integer from 4 to 18).
をポリアミド酸に対して0.05〜40重量%としてな
る請求項1記載の液晶配向膜用組成物。2. The composition for liquid crystal alignment film according to claim 1, wherein the diamine compound represented by the general formula [1] is contained in an amount of 0.05 to 40% by weight based on the polyamic acid.
請求項1記載の液晶配向膜用組成物を塗布後、乾燥、脱
水閉環させてポリイミド層を形成し、ついでこのポリイ
ミド層をラビングする液晶配向膜の製造法。3. A surface of the liquid crystal holding substrate on which electrodes are formed,
A method for producing a liquid crystal alignment film, comprising applying the composition for a liquid crystal alignment film according to claim 1, drying and dehydration ring closure to form a polyimide layer, and then rubbing the polyimide layer.
請求項2記載の液晶配向膜用組成物を塗布後、乾燥、脱
水閉環させてポリイミド層を形成し、ついでこのポリイ
ミド層をラビングする液晶配向膜の製造法。4. A surface of the liquid crystal holding substrate on which electrodes are formed,
A method for producing a liquid crystal alignment film, comprising applying the composition for a liquid crystal alignment film according to claim 2, drying and dehydration ring closure to form a polyimide layer, and then rubbing the polyimide layer.
成された液晶配向膜。5. A liquid crystal alignment film formed from the liquid crystal alignment film composition according to claim 1.
成された液晶配向膜。6. A liquid crystal alignment film formed from the liquid crystal alignment film composition according to claim 2.
挾持基板。7. A liquid crystal holding substrate having the liquid crystal alignment film according to claim 5.
挾持基板。8. A liquid crystal holding substrate having the liquid crystal alignment film according to claim 6.
を設け、該基板および電極上に請求項1記載の液晶配向
膜用組成物より得られる液晶配向膜を形成した液晶表示
素子。9. A liquid crystal display device comprising an electrode provided on the side of a liquid crystal holding substrate facing the liquid crystal, and a liquid crystal alignment film obtained from the composition for a liquid crystal alignment film according to claim 1 formed on the substrate and the electrode.
極を設け、該基板および電極上に請求項2記載の液晶配
向膜用組成物より得られる液晶配向膜を形成した液晶表
示素子。10. A liquid crystal display device comprising an electrode provided on the side of a liquid crystal holding substrate facing the liquid crystal, and a liquid crystal alignment film obtained from the composition for a liquid crystal alignment film according to claim 2 formed on the substrate and the electrode.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34304892A JPH06194671A (en) | 1992-12-24 | 1992-12-24 | Composition for liquid crystal oriented film, production of liquid crystal oriented film, liquid crystal oriented film, liquid crystal clamping substrate and liquid crystal display element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34304892A JPH06194671A (en) | 1992-12-24 | 1992-12-24 | Composition for liquid crystal oriented film, production of liquid crystal oriented film, liquid crystal oriented film, liquid crystal clamping substrate and liquid crystal display element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06194671A true JPH06194671A (en) | 1994-07-15 |
Family
ID=18358540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP34304892A Pending JPH06194671A (en) | 1992-12-24 | 1992-12-24 | Composition for liquid crystal oriented film, production of liquid crystal oriented film, liquid crystal oriented film, liquid crystal clamping substrate and liquid crystal display element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06194671A (en) |
-
1992
- 1992-12-24 JP JP34304892A patent/JPH06194671A/en active Pending
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