JPS62192724A - Ferroelectric liquid crystal element and its production - Google Patents
Ferroelectric liquid crystal element and its productionInfo
- Publication number
- JPS62192724A JPS62192724A JP3387586A JP3387586A JPS62192724A JP S62192724 A JPS62192724 A JP S62192724A JP 3387586 A JP3387586 A JP 3387586A JP 3387586 A JP3387586 A JP 3387586A JP S62192724 A JPS62192724 A JP S62192724A
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- liquid crystal
- substrates
- orientation
- ferroelectric liquid
- degrees
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- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 title claims description 28
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000000758 substrate Substances 0.000 claims abstract description 71
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 52
- 238000000151 deposition Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 230000008021 deposition Effects 0.000 claims description 9
- 239000012212 insulator Substances 0.000 claims description 5
- 230000007547 defect Effects 0.000 abstract description 12
- 230000005684 electric field Effects 0.000 abstract description 9
- 230000003446 memory effect Effects 0.000 abstract description 7
- 230000002950 deficient Effects 0.000 abstract description 2
- 238000007740 vapor deposition Methods 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 5
- 210000002858 crystal cell Anatomy 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、強誘電性液晶を用いた液晶素子とその製造方
法に関し、特に液晶の配向に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a liquid crystal element using ferroelectric liquid crystal and a method for manufacturing the same, and particularly relates to alignment of liquid crystal.
（従来の技術）
強誘電性液晶はμ秒単位の高速応答性を示すことや、メ
モリー性があることから時分割駆動表示において表示容
量に制限がない等の点で、その実用化が期待されている
。(Prior art) Ferroelectric liquid crystals are expected to be put to practical use because they exhibit high-speed response on the microsecond scale and have memory properties, so there is no limit to the display capacity in time-division drive displays. ing.
強誘電性液晶を用いる場合の技術的問題点は配向の困難
性でおる。強誘電性液晶の配向技術としては、例えば特
開昭６０−５７８２１号公報には、一方の基板の配向面
のみを一軸配向処理する試みが記載されている。また、
特開昭５９−１３１９１３号公報には、ポリイミド配向
面をラビングした基板と垂直配向基板とを組合わせてを
用いる試みが記載されている。更に、特開昭６０−６６
２３３＠公報には、ナイロン、ポリエチレン、ポリエス
テル等の高分子を配向膜に用い、ラビング方法による配
向が記載されている。A technical problem when using ferroelectric liquid crystals is the difficulty in alignment. As an orientation technique for ferroelectric liquid crystal, for example, Japanese Patent Application Laid-Open No. 60-57821 describes an attempt to uniaxially align only the orientation surface of one substrate. Also,
JP-A-59-131913 describes an attempt to use a combination of a substrate with a rubbed polyimide orientation surface and a vertically oriented substrate. Furthermore, JP-A-60-66
233@ publication describes alignment by a rubbing method using polymers such as nylon, polyethylene, polyester, etc. as an alignment film.
（発明が解決しようとする問題点）
しかし、上述の各方法とも以下に述べる欠点を有してい
る。(Problems to be Solved by the Invention) However, each of the above-mentioned methods has the following drawbacks.
特開昭６０−５７８２１号公報の片面のみの分子配向を
規制する方法では、分子配向規制力が弱すぎて、分子配
向中に、欠陥線が多数発生して、コントラストの低下を
招く。また、特開昭５９−１３１９１３号公報の方法で
は、強誘電性液晶の特徴であるメモリー効果を有する配
向は得られない。更に、特開昭６０−６６２３３号公報
の技術では、分子配向中に欠陥線の存在が避けられない
。In the method disclosed in JP-A-60-57821 for regulating molecular orientation on only one side, the molecular orientation regulating force is too weak, and many defective lines occur during molecular orientation, resulting in a decrease in contrast. Furthermore, the method disclosed in Japanese Patent Application Laid-Open No. 59-131913 does not provide an alignment having a memory effect, which is a characteristic of ferroelectric liquid crystals. Furthermore, in the technique of JP-A-60-66233, the presence of defect lines during molecular orientation is unavoidable.
従って、この発明は、分子配向中に欠陥線がなく、強誘
電性液晶の均一な配向を実現し、高コントラストで、か
つ明瞭なメモリー効果を有する強誘電性液晶素子を得る
ことを目的とする。Therefore, an object of the present invention is to obtain a ferroelectric liquid crystal element that has no defect lines in molecular alignment, achieves uniform alignment of ferroelectric liquid crystal, and has high contrast and a clear memory effect. .
［発明の構成］
（問題点を解決するための手段）
この発明の強誘電性液晶素子は、電極を有する一対の基
板間に強誘電性液晶を挟持してなる強誘電性液晶素子に
おいて、基板の相対向する面に、液晶分子のダイレクタ
−と基板表面とのなす角度を５度乃至４０度とする傾斜
配向層をそれぞれ有し、一対の基板表面の傾斜配向層は
逆傾斜配向をなすことを特徴とする強誘電性液晶素子で
ある。[Structure of the Invention] (Means for Solving Problems) A ferroelectric liquid crystal element of the present invention is a ferroelectric liquid crystal element in which a ferroelectric liquid crystal is sandwiched between a pair of substrates having electrodes. have tilted alignment layers on opposing surfaces of the substrates, each having an angle between the director of the liquid crystal molecules and the substrate surface of 5 degrees to 40 degrees, and the tilted alignment layers on the surfaces of the pair of substrates have opposite tilted alignments. This is a ferroelectric liquid crystal element characterized by:
また、本発明の強誘電性液晶素子の製造方法は、一対の
基板の夫々に、基板の法線に対する角度が７Ｑ度乃至８
８度の範囲の蒸着角度で絶縁物を基板に蒸着して配向層
を形成する工程と、絶縁物の蒸着方向が前記一対の基板
においてほぼ同一方向となるように配向層を対向させて
、かつ所定の間隔をおいて一対の基板を配置する工程と
、一対の基板の間隙に強誘電性液晶を封入する工程とを
有することを特徴とする強誘電性液晶素子の製造方法で
ある。Further, in the method for manufacturing a ferroelectric liquid crystal element of the present invention, each of the pair of substrates has an angle of 7Q degrees to 8Q degrees with respect to the normal line of the substrates.
forming an alignment layer by vapor depositing an insulator on the substrate at a vapor deposition angle of 8 degrees, and making the alignment layer face each other so that the direction of vapor deposition of the insulator is substantially the same on the pair of substrates, and A method for manufacturing a ferroelectric liquid crystal element, comprising the steps of arranging a pair of substrates at a predetermined interval, and filling a gap between the pair of substrates with ferroelectric liquid crystal.
（作用）
傾斜配向層を用いることにより、液晶分子が基板表面か
ら受ける基板表面に平行な面内の規制力か弱くなる。こ
れにより、液晶分子間でのねじれの力と、基板表面が液
晶分子を規制する力とをバランスざぜることができ、欠
陥のない均一な配向を得ることができる。(Function) By using the inclined alignment layer, the regulating force that liquid crystal molecules receive from the substrate surface in a plane parallel to the substrate surface becomes weaker. This makes it possible to balance the twisting force between liquid crystal molecules and the force regulating the liquid crystal molecules by the substrate surface, and it is possible to obtain uniform alignment without defects.
基板表面での液晶分子のグイレフターの方向を基板表面
に投影した方向をほぼ平行とした場合、第５図に示す様
に上下基板２．４で配向層６．８の傾斜方向が揃ってい
る順傾斜配向の場合と、第１図に示す様に上下基板２．
４で配向層６．８の傾斜方向が上下基板で逆向きとなっ
ている逆傾斜配向の場合とが考えられる。第５図に示す
ように、順傾斜配向をさせた場合では、液晶層に正また
は負の電界を印加し、液晶分子９の分子軸を基板と平行
にし液晶分子のダイポールを反転させスイッチングさせ
たのち、電界をとり去ると、液晶層中心部の液晶１０は
基板表面の傾斜配向の影響で元の傾斜配向となり、メモ
リー効果が出にくくなる。If the direction of the tilt direction of the liquid crystal molecules on the substrate surface is approximately parallel to the direction projected onto the substrate surface, then as shown in FIG. In the case of inclined orientation, as shown in FIG. 1, the upper and lower substrates 2.
In No. 4, the direction of inclination of the alignment layer 6.8 is opposite between the upper and lower substrates. As shown in Fig. 5, in the case of forward tilt alignment, a positive or negative electric field is applied to the liquid crystal layer to make the molecular axes of the liquid crystal molecules 9 parallel to the substrate, inverting the dipoles of the liquid crystal molecules and causing switching. Afterwards, when the electric field is removed, the liquid crystal 10 at the center of the liquid crystal layer returns to its original tilted orientation due to the influence of the tilted orientation on the substrate surface, making it difficult to produce a memory effect.
これに対し、第１図に示すように、逆傾斜配向の場合、
電界無印加のときには、液晶層中心部の液晶１０は基板
に対し平行となっているので、電界除去後も電界印加状
態の配向をとり続けることができ、メモリー効果が発現
しやすい。従って、一対の基板間の配向層の関係は逆傾
斜配向とするのが良い。On the other hand, as shown in FIG. 1, in the case of reverse tilt orientation,
When no electric field is applied, the liquid crystal 10 at the center of the liquid crystal layer is parallel to the substrate, so even after the electric field is removed, it can continue to be oriented in the electric field applied state, and a memory effect is likely to occur. Therefore, the relationship between the alignment layers between the pair of substrates is preferably such that they have oppositely inclined orientations.
傾斜配向層６．８によって作られる液晶分子９の基板表
面での傾斜角は基板から５度乃至４０度が良く、傾斜角
が５度以下の場合には基板表面の液晶分子に対する規制
力が強すぎ、配向の欠陥が発生する。また、液晶に正ま
たは負の電界を印加し、液晶分子のダイポールを反転さ
せスイッチン、グさせた時、基板表面近傍の液晶分子は
基板表面ににとらえられたまま動かずメモリー効果がな
くなる。また傾斜角が４０度をこえると、２枚の基板表
面での逆傾斜の差が大きすぎ、液晶の配向が上下基板間
で連続的に変化できなくなり、配向の欠陥を生ずる。The tilt angle of the liquid crystal molecules 9 formed by the tilted alignment layer 6.8 on the substrate surface is preferably between 5 degrees and 40 degrees from the substrate, and when the tilt angle is 5 degrees or less, the regulating force on the liquid crystal molecules on the substrate surface is strong. Otherwise, alignment defects will occur. Furthermore, when a positive or negative electric field is applied to the liquid crystal to reverse the dipole of the liquid crystal molecules and cause switching, the liquid crystal molecules near the substrate surface remain trapped by the substrate surface and do not move, eliminating the memory effect. Furthermore, if the tilt angle exceeds 40 degrees, the difference in reverse tilt between the surfaces of the two substrates is too large, and the alignment of the liquid crystal cannot be changed continuously between the upper and lower substrates, resulting in alignment defects.
本発明の強誘電性液晶は、一対の基板の各々に基板の法
線に対する角度が７０度乃至８８度の範囲の蒸着角度で
絶縁物を基板に蒸着して配向層を形成する工程と、絶縁
物の蒸着方向が第２図に示す様にほぼ平行で同方向とな
るように基板を対向させて配置する工程と、基板間に強
誘電性液晶を充填する工程とからなる製造方法により実
現できる。なお、蒸着角度が７０度以下では液晶分子は
傾斜配向をせず、蒸着方向と直角な方向に分子軸を向け
た水平配向となる。また８８度以上では効率よく傾斜配
向層を形成できない。The ferroelectric liquid crystal of the present invention is produced by forming an alignment layer by depositing an insulator on each of a pair of substrates at a deposition angle of 70 degrees to 88 degrees with respect to the normal line of the substrates; This can be achieved by a manufacturing method consisting of a process of arranging substrates facing each other so that the deposition direction of the material is almost parallel and in the same direction as shown in Figure 2, and a process of filling ferroelectric liquid crystal between the substrates. . Note that when the deposition angle is 70 degrees or less, the liquid crystal molecules are not inclinedly aligned, but are horizontally aligned with their molecular axes oriented in a direction perpendicular to the vapor deposition direction. Further, if the angle is 88 degrees or more, the tilted alignment layer cannot be efficiently formed.
（実施例）
実施例１
第２図は本発明の一実施例で、透明ガラスでできた２枚
の基板１０．１２が相対向させられている。(Embodiments) Embodiment 1 FIG. 2 shows an embodiment of the present invention, in which two substrates 10, 12 made of transparent glass are opposed to each other.
各基板の対向面にはそれぞれ電極１４．１６が形成され
、電極１４．１６上には傾斜配向層１８．２０がそれぞ
れ被着されている。そして、これら基板間１０．１２に
強誘電性液晶２２が傾斜配向層１８．２０に接して挟持
されて、液晶素子２４が形成されている。An electrode 14.16 is formed on the opposite side of each substrate, and a tilted alignment layer 18.20 is deposited on the electrode 14.16, respectively. A ferroelectric liquid crystal 22 is sandwiched between these substrates 10.12 in contact with inclined alignment layers 18.20 to form a liquid crystal element 24.
以下、この強誘電性液晶素子の製造法について説明する
。The method for manufacturing this ferroelectric liquid crystal element will be explained below.
基板１０．１２のそれぞれの基板の電極側の表面に、蒸
着角度８６度でＳｉＯを斜め蒸着法を用いて５０人の厚
さに蒸着し、傾斜配向層１８．２０をそれぞれ形成した
。なお、蒸着角度は、第４図に示すように、基板１４．
１６に垂直な方向２６．２８と蒸着方向３０．３２との
なす角度αで規定した。図中、３４は蒸発源でおる。On the electrode side surface of each of the substrates 10 and 12, SiO was deposited to a thickness of 50 mm using an oblique deposition method at a deposition angle of 86 degrees to form tilted alignment layers 18 and 20, respectively. Incidentally, the deposition angle is as shown in FIG. 4 on the substrate 14.
The angle α between the direction 26.28 perpendicular to 16 and the vapor deposition direction 30.32 was defined. In the figure, 34 is an evaporation source.
この後、基板１０．１２をＭ着方向３０．３２を基板１
０．１２に投影した方向３６．３８がほぼ平行で同一方
向となるようにまた傾斜配向層１８．２０が対向するよ
うにして、約２μｍの間隔を持って貼合わせた。これら
基板間に強誘電性液晶２２としてＭＢＲΔ８を封入して
、液晶素子２４を形成した。After this, the substrate 10.12 is attached in the M direction 30.32 to the substrate 1.
They were bonded together with an interval of about 2 μm so that the directions 36 and 38 projected on 0.12 were substantially parallel and in the same direction, and the inclined alignment layers 18 and 20 faced each other. MBRΔ8 was sealed between these substrates as a ferroelectric liquid crystal 22 to form a liquid crystal element 24.
次に第２図に示すように、液晶素子２４の基板１０に傾
斜配向層１８の蒸着方向を投影した方向３６から偏光軸
４０ａを約６８度ずらした偏光板４０を、また偏光板４
０の偏光軸４０ａと偏光軸４２ａが直交する他の偏光板
４２を基板１２に設置した。Next, as shown in FIG. 2, a polarizing plate 40 with a polarizing axis 40a shifted by about 68 degrees from a direction 36 in which the vapor deposition direction of the inclined alignment layer 18 is projected onto the substrate 10 of the liquid crystal element 24 is attached.
Another polarizing plate 42 whose polarizing axis 40a and polarizing axis 42a were perpendicular to each other was installed on the substrate 12.
以上の液晶素子を用いて、電気光学特性を測定したとこ
ろ、±１０ｖの矩形波の駆動に対して、コントラストは
約３５：１でおった。また電界を取去っても、電界印加
状態をそのまま保持する明瞭なメモリー性が確認できた
。また、偏光顕微鏡により液晶素子を観察したところ、
分子配向中に欠陥線の存在しない、非常に均一な配向が
みられた。When electro-optical characteristics were measured using the above liquid crystal element, the contrast was approximately 35:1 when driven by a ±10 V rectangular wave. Furthermore, even when the electric field was removed, a clear memory property was confirmed in which the applied electric field remained unchanged. In addition, when observing the liquid crystal element using a polarizing microscope, we found that
A very uniform orientation was observed with no defect lines in the molecular orientation.
液晶分子の傾斜角度は、２３度でめった。The tilt angle of the liquid crystal molecules was 23 degrees.
実施例２
実施例１で用いた液晶セルに、強誘電性液晶としてＤＯ
ＢＡＮＢＣを封入した。電気光学特性を測定したところ
、±１０ｖの矩形波の駆動に対して、コントラストは約
３０＝１でおった。また実施例１と同様のメモリー性が
確認できた。この場合も分子配向中に欠陥線はなく、非
常に均一な配向であった。また、液晶分子の傾斜角度は
、約２５度であった。Example 2 DO was added to the liquid crystal cell used in Example 1 as a ferroelectric liquid crystal.
BANBC was enclosed. When the electro-optical characteristics were measured, the contrast was approximately 30=1 for square wave driving of ±10 V. Furthermore, the same memory properties as in Example 1 were confirmed. In this case as well, there were no defect lines in the molecular orientation, and the orientation was very uniform. Further, the tilt angle of the liquid crystal molecules was about 25 degrees.
実施例３
実施例１で蒸着角度を７５度に変えて、電気光学特性を
測定したところ、コントラストは２７：１であった。ま
た実施例１と同様のメモリー性が確認できた。この場合
も分子配向の欠陥はなく、均一な配向でおった。液晶分
子の傾斜角度は、約３８度であった。Example 3 When the electro-optical characteristics were measured in Example 1 by changing the deposition angle to 75 degrees, the contrast was 27:1. Furthermore, the same memory properties as in Example 1 were confirmed. In this case as well, there were no defects in molecular orientation, and the orientation was uniform. The tilt angle of the liquid crystal molecules was about 38 degrees.
実施例４
実施例１で蒸着角度を８７度に変えて、電気光学特性を
測定したところ、コントラストは３４：１でめった。ま
た実施例１と同様のメモリー性が確認できた。この場合
も分子配向の欠陥はなく、均一な配向であった。液晶分
子の傾斜角度は、１８度であった。Example 4 When the electro-optical characteristics were measured in Example 1 by changing the deposition angle to 87 degrees, the contrast was found to be 34:1. Furthermore, the same memory properties as in Example 1 were confirmed. In this case as well, there were no defects in molecular orientation, and the orientation was uniform. The tilt angle of the liquid crystal molecules was 18 degrees.
実施例５
実施例１で、蒸着材料を三フッ化アルミニウムに変えて
傾斜配向層１８．２０を形成した。電気光学特性を測定
したところ、コントラストは３２：１であった。またメ
モリー性が確認できた。この場合も分子配向中に欠陥線
はなく、均一な配向であった。液晶分子の傾斜角度は、
約１４度でめった。Example 5 In Example 1, the inclined alignment layers 18 and 20 were formed by changing the vapor deposition material to aluminum trifluoride. When electro-optical properties were measured, the contrast was 32:1. In addition, memory properties were confirmed. In this case as well, there were no defect lines in the molecular orientation, and the orientation was uniform. The tilt angle of liquid crystal molecules is
It was about 14 degrees.
比較例１
実施例１で、基板への蒸着方向の投影方向３６．３８を
第５図に示すように互いに逆向きとした順傾斜配向の液
晶セルを形成し、これに液晶としてＭＢＲ△８を封入し
た。電気光学特性を測定したところ、コントラストは１
４：１であった。また、場所によってはメモリー性が観
測されなかった。液晶分子の傾斜角度は、２３度であっ
た。Comparative Example 1 In Example 1, a forward tilt alignment liquid crystal cell was formed with the projection directions 36 and 38 of the vapor deposition direction on the substrate being opposite to each other as shown in FIG. Enclosed. When we measured the electro-optical characteristics, the contrast was 1
The ratio was 4:1. In addition, no memorability was observed depending on the location. The tilt angle of the liquid crystal molecules was 23 degrees.
比較例２
実施例１で、配向層１８．２０として、ポリイミド樹脂
（ＰＩＸ１４００：日立化成社製〉を基板にスピナーで
塗布後、一方向にラビングし、ラビング方向が互いに同
方向となり、逆傾斜配向となるようにセルを組み立てた
。このセルに液晶として、ＭＢＲＡＳを封入した。電気
光学時を測定したところ、コントラストは約５：１で、
配向むらが多数発生した。なお、液晶分子の傾斜角度は
、約２度であった。Comparative Example 2 In Example 1, as the alignment layer 18.20, polyimide resin (PIX1400: manufactured by Hitachi Chemical Co., Ltd.) was applied to the substrate using a spinner, and then rubbed in one direction, so that the rubbing directions were in the same direction, resulting in a reverse tilt orientation. A cell was assembled so that MBRAS was sealed as a liquid crystal in this cell.When electro-optical measurements were taken, the contrast was approximately 5:1.
Many alignment irregularities occurred. Note that the tilt angle of the liquid crystal molecules was about 2 degrees.
比較例３
実施例１で、配向層１８．２０として、ＦＣ−８０５（
住友スリーエム製）を基板に塗布後、一方向にラビング
し、ラビング方向が互いに同方向として逆傾斜配向とな
るように液晶セルを組み立てた。Comparative Example 3 In Example 1, FC-805 (
(manufactured by Sumitomo 3M) was applied to the substrate, and then rubbed in one direction, and the liquid crystal cell was assembled so that the rubbing directions were in the same direction and oppositely inclined orientations were obtained.
この液晶セルに液晶として、ＭＢＲＡＳを封入した。電
気光学時を測定したところ、コントラストは約２．５：
１で、セルの中でメモリーのある場所は殆どなく、配向
むらが多数発生した。なお、液晶分子の傾斜角度は、約
５５度乃至８０度であった。MBRAS was sealed in this liquid crystal cell as a liquid crystal. When measured in electro-optical mode, the contrast was approximately 2.5:
In No. 1, there were almost no memory locations in the cell, and many uneven orientations occurred. Note that the tilt angle of the liquid crystal molecules was approximately 55 degrees to 80 degrees.
［発明の効果コ
以上実施例で述べたように本発明によれば、基板の傾斜
配向層を逆傾斜配向とすることにより、一対の基板間で
液晶分子への、基板間でのねじれる力を緩和させること
が可能となって、欠陥線のない均一な配向を実現するこ
とができる。そして、高コントラストかつ明瞭なメモリ
ー効果を有する液晶素子を得ることができる。従って、
本発明の液晶素子を用いれば、能動素子を用いないＸ−
Ｙ単純マトリックス型で高コントラストかつ大容量の液
晶表示素子等を実現できる。[Effects of the Invention] As described in the above embodiments, according to the present invention, by making the tilted orientation layers of the substrates have reverse tilted orientation, the twisting force applied to the liquid crystal molecules between the pair of substrates can be reduced. This makes it possible to achieve uniform alignment without defect lines. Thus, a liquid crystal element having high contrast and a clear memory effect can be obtained. Therefore,
If the liquid crystal element of the present invention is used, X-
It is possible to realize a high-contrast, large-capacity liquid crystal display element using the Y simple matrix type.
第１図は本発明における逆傾斜配向を示す断面図、第２
図は本発明の一実施例を示す斜視図、第３図は本発明の
詳細な説明する概略分解斜視図、第４図は蒸着角度を説
明する図、第５図は順傾斜配向を示す断面図である。
２．１０・・・上側基板、
４．１２・・・・・・上側基板、
９．１０・・・液晶分子、
１４．１６・・・・・・電極、
１８．２０・・・・・・配向層、
２２・・・・・・強誘電性液晶、
２４・・・・・・液晶素子、
４０、４２・・・・・・偏光板。
代理人 弁理士 則 近 憲 ＩＩｃＪ同 大胡典夫
第５図
第２図
ｆρ
第３図
第４図FIG. 1 is a cross-sectional view showing the reverse tilt orientation in the present invention, and FIG.
Figure 3 is a perspective view showing an embodiment of the present invention, Figure 3 is a schematic exploded perspective view explaining the invention in detail, Figure 4 is a diagram explaining the deposition angle, and Figure 5 is a cross section showing forward tilt orientation. It is a diagram. 2.10... Upper substrate, 4.12... Upper substrate, 9.10... Liquid crystal molecule, 14.16... Electrode, 18.20... Alignment layer, 22... Ferroelectric liquid crystal, 24... Liquid crystal element, 40, 42... Polarizing plate. Agent Patent Attorney Ken Nori Chika IIcJ Norio Ogo Figure 5 Figure 2 fρ Figure 3 Figure 4
Claims (2)
してなる強誘電性液晶素子において、前記基板の相対向
する面に、液晶分子のダイレクターと基板表面とのなす
角度を５度乃至４０度とする傾斜配向層をそれぞれ有し
、前記一対の基板表面の傾斜配向層は逆傾斜配向をなす
ことを特徴とする強誘電性液晶素子。(1) In a ferroelectric liquid crystal element in which a ferroelectric liquid crystal is sandwiched between a pair of substrates having electrodes, the angle between the director of the liquid crystal molecules and the substrate surface is set to 5 on the opposing surfaces of the substrates. 1. A ferroelectric liquid crystal device, characterized in that the tilted alignment layers on the surfaces of the pair of substrates have opposite tilted orientations, each having a tilted orientation layer having an angle of 40 degrees to 40 degrees.
７０度乃至８８度の範囲の蒸着角度で絶縁物を前記基板
に蒸着して配向層を形成する工程と、前記絶縁物の蒸着
方向が前記一対の基板においてほぼ同一方向となるよう
に前記配向層を対向させて、かつ所定の間隔をおいて前
記一対の基板を配置する工程と、前記一対の基板の間隙
に強誘電性液晶を封入する工程とを有することを特徴と
する強誘電性液晶素子の製造方法。(2) forming an alignment layer on each of a pair of substrates by depositing an insulator at a deposition angle in a range of 70 degrees to 88 degrees with respect to the normal line of the substrate; and depositing the insulator. a step of arranging the pair of substrates with the alignment layers facing each other so that the directions are substantially the same in the pair of substrates and with a predetermined interval therebetween; and a step of disposing a ferroelectric liquid crystal in the gap between the pair of substrates. 1. A method for manufacturing a ferroelectric liquid crystal element, comprising the step of encapsulating a ferroelectric liquid crystal element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3387586A JPS62192724A (en) | 1986-02-20 | 1986-02-20 | Ferroelectric liquid crystal element and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3387586A JPS62192724A (en) | 1986-02-20 | 1986-02-20 | Ferroelectric liquid crystal element and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62192724A true JPS62192724A (en) | 1987-08-24 |
Family
ID=12398689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3387586A Pending JPS62192724A (en) | 1986-02-20 | 1986-02-20 | Ferroelectric liquid crystal element and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62192724A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6352122A (en) * | 1986-06-18 | 1988-03-05 | ザ ゼネラル エレクトリツクカンパニ−，ピ−．エル．シ−． | Liquid crystal apparatus |
| JPS6398632A (en) * | 1986-10-15 | 1988-04-30 | Semiconductor Energy Lab Co Ltd | Liquid crystal electrooptical device |
| JPS63133121A (en) * | 1986-11-26 | 1988-06-04 | Matsushita Electric Ind Co Ltd | Liquid crystal element and its production |
| JPS6478234A (en) * | 1987-09-19 | 1989-03-23 | Nippon Denso Co | Matrix type liquid crystal display device |
| JPH01501174A (en) * | 1986-04-03 | 1989-04-20 | イギリス国 | lcd device |
| JPH02916A (en) * | 1988-03-23 | 1990-01-05 | Seiko Instr Inc | Liquid crystal optical element |
| JPH02287317A (en) * | 1989-04-27 | 1990-11-27 | Seiko Epson Corp | Liquid crystal electrooptical element |
| US5061044A (en) * | 1989-05-23 | 1991-10-29 | Citizen Watch Co., Ltd. | Ferroelectric liquid crystal display having opposingly inclined alignment films wherein the liquid crystal has one twisted and two aligned states which coexist and a driving method to produce gray scale |
| US5109293A (en) * | 1989-02-28 | 1992-04-28 | Citizen Watch Co., Ltd. | Method of manufacturing ferroelectric liquid crystal display element |
| US5214523A (en) * | 1990-04-28 | 1993-05-25 | Sony Corporation | Ferroelectric liquid crystal display device having monostabilized state as an initial state and continuous gray-scale |
| US5646704A (en) * | 1989-10-26 | 1997-07-08 | Canon Kabushiki Kaisha | Chiral smectic liquid crystal device having predetermined pre-tilt angle and intersection angle |
| USRE37509E1 (en) | 1986-04-03 | 2002-01-15 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britian And Northern Ireland | Smectic liquid crystal devices |
-
1986
- 1986-02-20 JP JP3387586A patent/JPS62192724A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07209676A (en) * | 1986-04-03 | 1995-08-11 | Uk Government | Manufacture of liquid-crystal device |
| JPH01501174A (en) * | 1986-04-03 | 1989-04-20 | イギリス国 | lcd device |
| USRE37509E1 (en) | 1986-04-03 | 2002-01-15 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britian And Northern Ireland | Smectic liquid crystal devices |
| JPS6352122A (en) * | 1986-06-18 | 1988-03-05 | ザ ゼネラル エレクトリツクカンパニ−，ピ−．エル．シ−． | Liquid crystal apparatus |
| JPS6398632A (en) * | 1986-10-15 | 1988-04-30 | Semiconductor Energy Lab Co Ltd | Liquid crystal electrooptical device |
| JPS63133121A (en) * | 1986-11-26 | 1988-06-04 | Matsushita Electric Ind Co Ltd | Liquid crystal element and its production |
| JPS6478234A (en) * | 1987-09-19 | 1989-03-23 | Nippon Denso Co | Matrix type liquid crystal display device |
| JPH02916A (en) * | 1988-03-23 | 1990-01-05 | Seiko Instr Inc | Liquid crystal optical element |
| US5109293A (en) * | 1989-02-28 | 1992-04-28 | Citizen Watch Co., Ltd. | Method of manufacturing ferroelectric liquid crystal display element |
| JPH02287317A (en) * | 1989-04-27 | 1990-11-27 | Seiko Epson Corp | Liquid crystal electrooptical element |
| US5061044A (en) * | 1989-05-23 | 1991-10-29 | Citizen Watch Co., Ltd. | Ferroelectric liquid crystal display having opposingly inclined alignment films wherein the liquid crystal has one twisted and two aligned states which coexist and a driving method to produce gray scale |
| US5646704A (en) * | 1989-10-26 | 1997-07-08 | Canon Kabushiki Kaisha | Chiral smectic liquid crystal device having predetermined pre-tilt angle and intersection angle |
| US5214523A (en) * | 1990-04-28 | 1993-05-25 | Sony Corporation | Ferroelectric liquid crystal display device having monostabilized state as an initial state and continuous gray-scale |
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