JPH02211425A - Liquid crystal oriented film and formation thereof - Google Patents
Liquid crystal oriented film and formation thereofInfo
- Publication number
- JPH02211425A JPH02211425A JP1033112A JP3311289A JPH02211425A JP H02211425 A JPH02211425 A JP H02211425A JP 1033112 A JP1033112 A JP 1033112A JP 3311289 A JP3311289 A JP 3311289A JP H02211425 A JPH02211425 A JP H02211425A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- substrate
- liquid crystal
- alignment film
- photosensitive resin
- 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
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 39
- 230000015572 biosynthetic process Effects 0.000 title 1
- 239000011347 resin Substances 0.000 claims abstract description 48
- 229920005989 resin Polymers 0.000 claims abstract description 48
- 239000000758 substrate Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 abstract description 7
- 230000003068 static effect Effects 0.000 abstract description 7
- 239000004744 fabric Substances 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 5
- 230000000873 masking effect Effects 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 229920001721 polyimide Polymers 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000009719 polyimide resin Substances 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
- G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133765—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers without a surface treatment
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野１
本発明は、液晶表示体に関し、特にその配向膜に関する
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to a liquid crystal display, and particularly to an alignment film thereof.
［従来の技術］
従来、配向膜の形成方法としては、第２図（ａ）〜（Ｃ
）に示されるような方法が知られていた。第２図（ａ）
においてｌは基板であり、液晶表示体の場合、多くはガ
ラスである。２は、樹脂であり、ポリイミド、ポリアミ
ド等がよく使用される。一定量の樹脂２を基板ｌ上に滴
下し、第２図（ｂ）に示すように、基板ｌを回転し、樹
脂２を基板１上に一定の厚さに塗布する。樹脂２中に溶
剤が含まれている場合は、溶剤を揮発させるために、ま
た、ポリイミド系樹脂の場合は、イミドの脱水縮合反応
を行うために、１５０℃〜２５０℃に基板ｌを１〜２時
間加熱する。その後、第２図（Ｃ）に示されるように、
４の回転ローラーに巻きつけられた布３を回転させ、基
板ｌ上の樹脂２に押しあてながら、基ｔｅｌ上を回転方
向と平行な方向へ移動させる。すると、樹脂２上には微
細な溝が同一方向に多数形成される。このようにして形
成された基板上の配向膜は、もう１枚の基板上の配向膜
面ＩＩ＋と組み合わされ、液晶が注入される。すると、
液晶分子は、配向膜上に形成されている微細な溝にそっ
て配列し、規則的な配向を得ることができる。このよう
にして、液晶表示体の配向を得る方法が以前より知られ
ていた。もちろん、配向膜と基板の間には、液晶駆動用
の電極、必要に応じて能動素子が形成されており、それ
らによって液晶表示体は駆動されていた。[Prior Art] Conventionally, as a method for forming an alignment film, the methods shown in FIGS. 2(a) to (C
) was known. Figure 2(a)
In the above, l is a substrate, and in the case of a liquid crystal display, it is often glass. 2 is a resin, and polyimide, polyamide, etc. are often used. A predetermined amount of resin 2 is dropped onto the substrate 1, and as shown in FIG. 2(b), the substrate 1 is rotated to apply the resin 2 onto the substrate 1 to a predetermined thickness. If the resin 2 contains a solvent, in order to volatilize the solvent, and in the case of polyimide resin, to perform the dehydration condensation reaction of imide, the substrate 1 is heated to 150 to 250 °C. Heat for 2 hours. After that, as shown in FIG. 2(C),
The cloth 3 wound around the rotating roller 4 is rotated, and while being pressed against the resin 2 on the substrate 1, it is moved on the base tel in a direction parallel to the rotation direction. Then, a large number of fine grooves are formed on the resin 2 in the same direction. The alignment film thus formed on the substrate is combined with the alignment film surface II+ on another substrate, and liquid crystal is injected. Then,
Liquid crystal molecules are aligned along the fine grooves formed on the alignment film, and regular alignment can be obtained. Methods of obtaining orientation in liquid crystal displays in this way have been known for some time. Of course, electrodes for driving the liquid crystal and active elements are formed as necessary between the alignment film and the substrate, and the liquid crystal display is driven by these.
［発明が解決しようとする課題］
しかし、従来の液晶配向膜の形成方法では、樹脂を布で
こすることになるため、静電気が発生するという問題点
を有していた。すなわち、発生した静電気は、基板上に
形成されている電極、能動素子を破壊し、液晶表示体を
駆動することができなくなるという大きな問題点を有し
ていた。[Problems to be Solved by the Invention] However, in the conventional method for forming a liquid crystal alignment film, since the resin is rubbed with a cloth, there is a problem in that static electricity is generated. That is, the generated static electricity destroys the electrodes and active elements formed on the substrate, resulting in a major problem in that the liquid crystal display cannot be driven.
また、布でこすられた樹脂からは、こすり滓が発生し、
それは、液晶表示体が製造されるクリーンルーム内での
大きな発塵源となり、他の製造工程の歩留まりを低下さ
せる大きな要因となるという大きな問題点をも有してい
た。In addition, rubbing slag is generated from the resin rubbed with cloth,
This also poses a major problem in that it becomes a major source of dust in the clean room where the liquid crystal display is manufactured, and becomes a major factor in reducing the yield of other manufacturing processes.
このような問題点を解決するため、本発明では、静電気
が発生せず、また発塵もしない液晶配向膜の形成方法を
提供することを目的とする。In order to solve these problems, it is an object of the present invention to provide a method for forming a liquid crystal alignment film that does not generate static electricity or generate dust.
（課題を解決するための手段）
上記問題点を解決するため、本発明の液晶配向膜の形成
方法では、基板と、前記基板上に載置された感光性を有
する樹脂が、一方向の直線縞上に露光された後、現像さ
れ、一方向の直線縞状の凹凸面に形成されていることを
特徴とする。また、本発明の液晶配向膜は、前記液晶配
向膜の形成方法によって形成されていることを特徴とす
る。(Means for Solving the Problems) In order to solve the above problems, in the method for forming a liquid crystal alignment film of the present invention, a substrate and a photosensitive resin placed on the substrate are arranged in a straight line in one direction. It is characterized in that it is exposed on stripes and then developed to form an uneven surface in the form of linear stripes in one direction. Moreover, the liquid crystal alignment film of the present invention is characterized in that it is formed by the method for forming a liquid crystal alignment film.
〔作 用１
本発明では、基板上に感光性を有する樹脂を載置し、そ
の樹脂に一方向の直線縞状の露光を行い、現像し、基板
上の樹脂に一方向の直線縞状の凹凸面を形成することが
できるので、基板上の樹脂をこすらなくとも、配向膜の
目的とする微細な多数の同一方向溝を形成するこ゛とが
できる。液晶分子は、この溝にそって良好に配向する。[Function 1] In the present invention, a photosensitive resin is placed on a substrate, the resin is exposed to light in the form of linear stripes in one direction, and developed, and the resin on the substrate is exposed in the form of linear stripes in one direction. Since an uneven surface can be formed, a large number of fine grooves in the same direction, which are the purpose of an alignment film, can be formed without rubbing the resin on the substrate. Liquid crystal molecules are well aligned along these grooves.
［実 施 例Ｊ
以下に、本発明の一実施例を図面に基づき、詳細に説明
する。[Embodiment J] An embodiment of the present invention will be described in detail below based on the drawings.
第１図（ａ）〜（ｅ）は、本実施例の液晶配向膜の形成
方法を示す模式図である。第１図（ａ）で１は、基板で
あり、−船釣に液晶表示体では、ガラス、プラスチック
、有機フィルム等が利用されている６図中には省略しで
あるが、基板上には液晶駆動用の電極、必要に応じて能
動素子等がすでに形成しである。１０は感光性樹脂であ
り、船釣には、ポリアミド、ポリイミド等の樹脂が多い
が、感光性を有する樹脂であれば何でも良い。FIGS. 1(a) to 1(e) are schematic diagrams showing a method of forming a liquid crystal alignment film of this example. In Fig. 1(a), 1 is a substrate, and glass, plastic, organic film, etc. are used in liquid crystal displays for boat fishing.Although not shown in Fig. 6, there are Electrodes for driving the liquid crystal, active elements, etc. as required have already been formed. 10 is a photosensitive resin, and for boat fishing, resins such as polyamide and polyimide are often used, but any photosensitive resin may be used.
以下本実施例においては、感光性樹脂は、ポリイミド系
樹脂、例えば宇部興産（株）製の商品名ＰＩ−４００を
用いた場合について述べる。ＮＭＰ等の溶媒で適当に希
釈した後、基板１上に感光性樹脂ＩＯを滴下する０次に
第１図（ｂ）に示すように基板１を回転し、感光性樹脂
ＩＯを基板１上に均一になるように塗布する。感光性樹
脂１０の膜厚は５００〜１０００人であることが多い。In this example, a case will be described in which a polyimide resin such as PI-400 manufactured by Ube Industries, Ltd. is used as the photosensitive resin. After appropriately diluting with a solvent such as NMP, drop the photosensitive resin IO onto the substrate 1. Next, rotate the substrate 1 as shown in FIG. Apply evenly. The film thickness of the photosensitive resin 10 is often 500 to 1000.
次に第１図（Ｃ）に示すように、感光性樹脂１０に入射
光１３をフォトマスク１１を通して照射する６７オトマ
スク１１にはマスキング部１２が直線縞状に形成されて
おり、感光性樹脂１０に、直線縞状に明暗部が露光され
るようになっている。Next, as shown in FIG. 1(C), the photosensitive resin 10 is irradiated with the incident light 13 through the photomask 11.The masking portion 12 is formed in a straight stripe shape on the 67 otomask 11, and the photosensitive resin 10 is irradiated with the incident light 13 through the photomask 11. The bright and dark areas are exposed in linear stripes.
フォトマスク１１は、図のように基板ｌの周囲の部分を
覆うようにマスキング部１２が形成されていても良い。The photomask 11 may have a masking portion 12 formed so as to cover the peripheral portion of the substrate l as shown in the figure.
この点については後に詳述する０次に第１図（ｄ）に示
すように、基板ｌを現像液１４中につける。現像液１４
中で、感光性樹脂の非感光部１６は感光しておらず樹脂
の３次元硬化が進んでいないので溶解する。しかし、感
光性樹脂の感光部１５は樹脂が３次元硬化するため、現
像液１４へは溶解しない。現（’２１液１４はＮＭＰ系
の溶媒が使用されることが多い。このようにして、第１
図（ｅ）に示されるような、基板１上に直線綿状の満１
７を持った配向ｌｌａ １８が形成される。最後に、基
Ｉｆｉｔ１を２３０℃３０分程加熱し、感光性樹脂中に
含まれる溶媒を除去し、完全なポリイミド樹脂とする。Regarding this point, the substrate 1 is immersed in the developer 14 as shown in FIG. developer 14
Among them, the non-exposed part 16 of the photosensitive resin is not exposed to light and three-dimensional curing of the resin has not progressed, so it is dissolved. However, the photosensitive portion 15 made of photosensitive resin is not dissolved in the developer 14 because the resin is three-dimensionally cured. At present ('21 liquid 14, NMP-based solvent is often used. In this way, the first
As shown in FIG.
An orientation lla 18 with 7 is formed. Finally, the base Ifit1 is heated at 230° C. for about 30 minutes to remove the solvent contained in the photosensitive resin and form a complete polyimide resin.
配向膜中の溝は、なるべく間隔が狭（なるようにフォト
マスク１１を設計した方が、後述する液晶の配向性は向
上する。また、現像時に、非感光部の感光性樹脂が完全
に溶解する前に、ハーフエツチングの状態で現像から取
り出して用いても良い。If the photomask 11 is designed so that the grooves in the alignment film are as narrow as possible, the alignment of the liquid crystal, which will be described later, will be improved.Also, during development, the photosensitive resin in the non-exposed areas will be completely dissolved. Before etching, the film may be taken out from development in a half-etched state and used.
第３図は、ＴＮモードの液晶表示体に本発明の液晶配向
膜を用いた例を説明する斜視図である。FIG. 3 is a perspective view illustrating an example in which the liquid crystal alignment film of the present invention is used in a TN mode liquid crystal display.
第３図において、前述の方法で基板ｌ上に直線縞状に形
成された配向膜１８の直線方向が９０°ずれるように、
もう−枚の配向膜１８付の基板１を設置する。すると、
縦長棒状分子であるＴＮ液晶分子１９は、分子自身のポ
テンシャルが最少になるように、配向ＩＩ！ １８上の
溝１７にそって並ぼうとする１両基板は、９０°ずらし
て設置しであるので液晶分子も９０°ねじれてうまく配
向するのである。これで、ＴＮモードの液晶表示体とな
るのである。この液晶表示体の駆動は、公知のように基
板ｌ上に予め形成しである電極、能動素子等で行われる
。また、第３図に示すように基板１の周囲の部分の配向
膜を、前述した現像工程で無くしてしまえば、シール材
２０で、２枚の基板を接着しようとした場合、従来配向
膜が付いていた基板上ではなく、シール材２０は基板１
の上に直接接着させることができるようになる。In FIG. 3, the linear direction of the alignment film 18 formed in the form of linear stripes on the substrate l by the method described above is shifted by 90°.
Another substrate 1 with an alignment film 18 is installed. Then,
The TN liquid crystal molecules 19, which are vertically long rod-shaped molecules, are aligned in II! orientation so that the potential of the molecules themselves is minimized. Since the two substrates that are to be lined up along the groove 17 on the substrate 18 are set apart from each other by 90 degrees, the liquid crystal molecules are also twisted by 90 degrees and are properly oriented. This makes it a TN mode liquid crystal display. The liquid crystal display is driven, as is well known, by electrodes, active elements, etc., which are previously formed on the substrate l. Furthermore, as shown in FIG. 3, if the alignment film around the substrate 1 is removed in the above-mentioned development process, when attempting to bond two substrates together using the sealant 20, the conventional alignment film The sealant 20 is not on the board it was attached to, but on the board 1.
It can be glued directly onto the.
【発明の効果１
以上、説明したように本発明による液晶配向膜及びその
形成方法では、基板上に載置される樹脂を感光性樹脂と
し、フォトプロセスで樹脂上に、液晶配向用の溝を形成
したので以下の効果を持つ。Effects of the Invention 1 As explained above, in the liquid crystal alignment film and the method for forming the same according to the present invention, the resin placed on the substrate is a photosensitive resin, and grooves for liquid crystal alignment are formed on the resin by a photo process. Since it has been formed, it has the following effects.
（１）樹脂を布でこするというような、静電気を発生す
る工程を完全に無くすることができるので、静電気はま
ったく発生しない、このため、基板上に形成された電極
や、能動素子を静電破壊することが無くなり、静電破壊
による液晶表示体の歩留まり低下をおさえることができ
る。(1) It is possible to completely eliminate processes that generate static electricity, such as rubbing the resin with a cloth, so no static electricity is generated. There is no possibility of electrical damage, and it is possible to suppress a decrease in the yield of liquid crystal displays due to electrostatic damage.
（２）機械的なこすり操作は行わないので、こすり滓の
ような埃は発生しないので、液晶表示装置を製造するク
リーンルーム内のクリーン度を低下させることがないた
め、他の製造工程の歩留まりを低下させることがない
（３） １（脂を基板上にスピンコードで付ける場合、
フォトパターニングの際、配向溝形成と同時に、基板の
周辺部も同時に樹脂を落とすことができる。こうすれば
、この基板同志を組み合わせて、液晶表示体を形成する
場合、これらをはり合わせるシール材の位置には樹脂を
なくすることができるため、基板のはり合わせ強度を大
きく上昇することができ、またシール材上の樹脂からの
水蒸気の透過を無くすることができるので、液晶表示体
の耐湿性を上昇させることができる。(2) Since there is no mechanical scrubbing operation, no dust such as scrubbing slag is generated, so the cleanliness in the clean room where LCDs are manufactured will not be reduced, and the yield rate of other manufacturing processes will be reduced. (3) 1 (When attaching fat to the substrate with a spin cord,
During photopatterning, resin can be removed from the peripheral portion of the substrate at the same time as alignment grooves are formed. In this way, when combining these substrates to form a liquid crystal display, it is possible to eliminate the resin at the position of the sealant where these are bonded together, and the strength of bonding the substrates can be greatly increased. Moreover, since the permeation of water vapor from the resin on the sealing material can be eliminated, the moisture resistance of the liquid crystal display can be improved.
第１図（ａ）〜（−）は、本発明による液晶配向膜の形
成方法を示す工程図であり、第２図（ａ）〜（ｃ）は従
来の液晶配向膜の形成方法を示す工程図である。第３図
は本発明による液晶配向膜を用いた液晶表示体の構造を
示す斜視図である。
ｌ・・・基板
２・・・樹脂
３・・・布
４ ・
１０ ・
ｌ １ ・
ｌ ２ ・
１３ ・
ｌ ４ ・
１５ ・
１６ ・
１７ ・
ｌ ８ ・
ｌ ９ ・
２０ ・
・回転ローラー
・感光性樹脂
・フォトマスク
・マスキング部
・入射光
・現像液
感光部
・非感光部
・溝
・配向膜
・液晶分子
・シール材
以上
出願人 セイコーエプソン株式会社
代理人 弁理士 鈴 木 喜三部（他１名）（Ｑ−）
（ｂ）
第２図
第
図
ｔｅ）FIGS. 1(a) to (-) are process diagrams showing a method for forming a liquid crystal alignment film according to the present invention, and FIGS. 2(a) to (c) are process diagrams showing a conventional method for forming a liquid crystal alignment film. It is a diagram. FIG. 3 is a perspective view showing the structure of a liquid crystal display using a liquid crystal alignment film according to the present invention. l... Substrate 2... Resin 3... Cloth 4 ・ 10 ・ l 1 ・ l 2 ・ 13 ・ l 4 ・ 15 ・ 16 ・ 17 ・ l 8 ・ l 9 ・ 20 ・ ・Rotating roller・photosensitive Resin, photomask, masking area, incident light, developer exposed area, non-exposed area, groove, alignment film, liquid crystal molecule, sealing material Applicant: Seiko Epson Co., Ltd. Agent Patent attorney Kizobe Suzuki (1 other person) ) (Q-) (b) Figure 2 Figure te)
Claims (2)
で基板上に形成されたことを特徴とする液晶配向膜。(1) A liquid crystal alignment film characterized in that a photosensitive resin is formed in linear stripes aligned in one direction on a substrate.
該樹脂を一方向の直線縞状に露光する工程と、該樹脂を
現像する工程とを有することを特徴とする液晶配向膜の
形成方法。(2) a step of applying a photosensitive resin onto the substrate;
A method for forming a liquid crystal alignment film, comprising the steps of exposing the resin in a linear stripe pattern in one direction and developing the resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1033112A JPH02211425A (en) | 1989-02-13 | 1989-02-13 | Liquid crystal oriented film and formation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1033112A JPH02211425A (en) | 1989-02-13 | 1989-02-13 | Liquid crystal oriented film and formation thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02211425A true JPH02211425A (en) | 1990-08-22 |
Family
ID=12377570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1033112A Pending JPH02211425A (en) | 1989-02-13 | 1989-02-13 | Liquid crystal oriented film and formation thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02211425A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05232473A (en) * | 1991-07-26 | 1993-09-10 | F Hoffmann La Roche Ag | Liquid crystal display cell |
-
1989
- 1989-02-13 JP JP1033112A patent/JPH02211425A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05232473A (en) * | 1991-07-26 | 1993-09-10 | F Hoffmann La Roche Ag | Liquid crystal display cell |
| US5838407A (en) * | 1991-07-26 | 1998-11-17 | Rolic Ag | Liquid crystal display cells |
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