JPS63234224A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS63234224A JPS63234224A JP6832787A JP6832787A JPS63234224A JP S63234224 A JPS63234224 A JP S63234224A JP 6832787 A JP6832787 A JP 6832787A JP 6832787 A JP6832787 A JP 6832787A JP S63234224 A JPS63234224 A JP S63234224A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- cyanoethylcellulose
- oriented
- liq
- crystal
- 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 description 23
- 239000000758 substrate Substances 0.000 claims abstract description 20
- KXJGSNRAQWDDJT-UHFFFAOYSA-N 1-acetyl-5-bromo-2h-indol-3-one Chemical compound BrC1=CC=C2N(C(=O)C)CC(=O)C2=C1 KXJGSNRAQWDDJT-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004677 Nylon Substances 0.000 abstract description 4
- 229920001778 nylon Polymers 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract 5
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 229920001721 polyimide Polymers 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000004988 Nematic liquid crystal Substances 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004990 Smectic liquid crystal Substances 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000975 dye 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
- 230000005621 ferroelectricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- -1 λ-methylpyrrolidone Substances 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、液晶ディスプレー、例えばコンピューター、
ワープロ等の表示装置、高品位テレビジョン等に用いら
れる液晶表示素子に関するもので′ ある。更に詳し
く言えば、これら液晶表示素子の導電基板上に積層され
る配向膜に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a liquid crystal display, such as a computer,
The present invention relates to liquid crystal display elements used in display devices such as word processors, high-definition televisions, and the like. More specifically, it relates to an alignment film laminated on a conductive substrate of these liquid crystal display elements.
（従来技術）
従来、時計や電卓等に使用されている液晶素子はネマチ
ック液晶をねじれ構造にしたツィスティッドネマチック
（ＴＮ）モードによる表示が主流である。このモードの
応答速度は、現状では２０ミリ秒が限度である。(Prior Art) Conventionally, liquid crystal elements used in watches, calculators, and the like are mainly displayed in twisted nematic (TN) mode, which is a twisted structure of nematic liquid crystal. The response speed of this mode is currently limited to 20 milliseconds.
これに対して高速応答性のある強誘電性液晶が新しいデ
ィスプレーの分野を拓くものとして期待され、研究がな
されている。In response, ferroelectric liquid crystals with high-speed response are expected to open up a new field of displays and are being studied.
ところでこれらの強誘電性液晶材料を使用した素子は、
液晶分子を基板面に平行なある優先方位にそろえて配列
させることが重要である。By the way, elements using these ferroelectric liquid crystal materials are
It is important to align the liquid crystal molecules in a certain preferred direction parallel to the substrate surface.
公知の強誘電性液晶配向方法は、強磁場の印加或いはず
シ応力の利用がある。しかしこれらの方法は生産プロセ
ス上実用性が乏しい。また福山等はスペーサエツジから
の配向を提案している（「自然Ｊ／９１３年７月号、第
３６頁〜第４ｃｔ頁、及び［オプトロニクス（ＯＰＴＲ
ＯＭＩＣ８）Ｊ／９１３年２月号、＠、＋４ｃ頁〜第７
０頁参照。）。Known methods for aligning ferroelectric liquid crystals include the application of a strong magnetic field or the use of magnetic stress. However, these methods are not practical in terms of production process. In addition, Fukuyama et al. proposed orientation from the spacer edge (see "Natural J/July 913 issue, pp. 36-4ct." and [Optronics (OPTR)
OMIC8) J/February 913 issue, @, +4c pages ~ No. 7
See page 0. ).
これも一様な配向を達成できる領域がエツジからｉｏｏ
μｍまでと狭く、実用化の面ではまだ不充分である。Again, the area where uniform orientation can be achieved is from the edge to ioo
It is narrow, down to μm, and is still insufficient for practical use.
他方、従来のネマチック液晶やコレステリック液晶の配
向制御に用いられている酸化ケイ素（Ｓ ｉｏ）の斜方
蒸着（特公昭！弘−／２０６７号公報参照）、ポリイミ
ド等の塗布（％開昭６１−／Ｉｔ２３２号参照）を行い
、特定の布等でラビングする方法がとられているが強誘
電性液晶の場合十分に一様な配向が得られない。最近、
ポリイミド系樹脂を真空中で蒸着重合した膜（％開昭６
／−／３１９２μ）やグロー放電によシ形成したポリイ
ミド膜（特開昭Ａ／−２／９０２り）を配向膜として使
用する方法が開示されているがこれらの方法でも必ずし
も十分に配向せずコントラストの低下が問題となる。On the other hand, oblique evaporation of silicon oxide (SIO), which is used to control the orientation of conventional nematic liquid crystals and cholesteric liquid crystals (see Japanese Patent Publication No. 2067), coating of polyimide, etc. However, in the case of ferroelectric liquid crystals, sufficiently uniform alignment cannot be obtained. recently,
Film made by vapor deposition polymerization of polyimide resin in vacuum (%
Although methods have been disclosed in which a polyimide film formed by glow discharge (Japanese Patent Application Laid-Open No. 2003-29992) or a polyimide film (Japanese Patent Application Laid-Open No. 2003-290029) is used as an alignment film, even these methods do not necessarily result in sufficient alignment. The problem is a decrease in contrast.
（発明の目的）
本発明は透明導電膜を有す一対の基板間に強誘電性液晶
を均一に配向させ、高コントラストの液晶表示素子を提
供することである。(Objective of the Invention) The object of the present invention is to uniformly align ferroelectric liquid crystal between a pair of substrates having transparent conductive films, thereby providing a high-contrast liquid crystal display element.
（発明の構成）
透明電極を有する二枚の基板上に配向膜を形成し、対向
配置し、液晶を封入した液晶素子において、少くとも一
方の配向膜にシアノエチルセルロースを用いることによ
り目的が達せられることがわかった。(Structure of the Invention) In a liquid crystal element in which alignment films are formed on two substrates having transparent electrodes, arranged facing each other, and liquid crystal is sealed, the object is achieved by using cyanoethylcellulose for at least one of the alignment films. I understand.
シアノエチルセルロースは高置換のものがのぞましい。Highly substituted cyanoethylcellulose is preferred.
シアノエチルセルロースを適当な有機溶剤に溶解し透明
電極の上に直接塗布してもよいし、シアンエチルセルロ
ースと透明電極との接着を良化するためにプライマーを
透明電極の上に塗布しそのあとシアノエチルセルロース
の溶液を塗布してもよい。塗布は通常のスピンコーター
、ローラーコーターで塗布してもよく又印刷方式での塗
布も可能である。Cyanoethylcellulose may be dissolved in a suitable organic solvent and applied directly onto the transparent electrode, or a primer may be applied onto the transparent electrode to improve adhesion between the cyanethylcellulose and the transparent electrode, and then cyanoethylcellulose is applied. You may also apply a solution of The coating may be performed using a conventional spin coater or roller coater, or may be applied by a printing method.
溶剤としては、λ−メチルピロリドン、ジメチルホルム
アミド、酢酸ブチル、酢酸エチル、エチルセロソルブ、
ジオキサン、ブチル２クトン、メチレンクロライド、ア
セトン、シクロヘキサノン、々どを単独又は混合系で使
用してもよい。シアノエチルセルロースは一対の透明電
極を有す基板の両者に設けてもよいし一方の基板だけで
もよい。As a solvent, λ-methylpyrrolidone, dimethylformamide, butyl acetate, ethyl acetate, ethyl cellosolve,
Dioxane, butyl dichton, methylene chloride, acetone, cyclohexanone, etc. may be used alone or in a mixed system. Cyanoethylcellulose may be provided on both substrates having a pair of transparent electrodes, or may be provided only on one substrate.
一方の基板にのみ設けた時他方の基板はツイストネマテ
ィックモードに通常よく用いられている配向膜、例えば
ポリイミド、ポリアミド、ポリビニルアルコールなどを
用いるとと忙より液晶の配向性は良好となる。When it is provided on only one substrate, and the other substrate is made of an alignment film commonly used in twisted nematic mode, such as polyimide, polyamide, polyvinyl alcohol, etc., the alignment of the liquid crystal will be better.
配向膜はナイロン、ポリエステル、ポリアクリロニトリ
ルの様な合成繊維、綿、羊毛のような天然繊維でラビン
グすることが好ましく、特に弱いラビングが好ましい。The alignment film is preferably rubbed with a synthetic fiber such as nylon, polyester, or polyacrylonitrile, or a natural fiber such as cotton or wool, and weak rubbing is particularly preferred.
ラビングは二枚の基板の一方ないし両者を行ってもよく
、弱いラビングの場合は両方について行うことが好まし
い。Rubbing may be performed on one or both of the two substrates, and in the case of weak rubbing, it is preferable to perform rubbing on both.
本発明の液晶表示素子に用いる液晶は電卓・時計等に用
いられているネマティック液晶でもよいが強誘電性液晶
の場合本発明の効果は顕著にあられれる。強誘電性を有
する液晶は、具体的にはカイラルスメクテイツクＣ相（
ＳｍＣ） 、Ｈ相（ＳｍＨ＊）、Ｉ相（ＳｍＩ”）、Ｊ
相（ＳｍＪ ＊）、Ｋ相（ＳｍＫ＊）、Ｇ相（ＳｍＧ＊
）又はＦ相（ＳｍＦ＊）を有す液晶である。具体的な液
晶組成としてはチッソのＣ８−１ｏｉｔ、Ｃ３−ｔｏｔ
ｉ、Ｃ５−１０／！、メルク（７）ＺＬＩ−Ｊ４＃１．
ＺＬＩ−Ｊ４ＡＩり、帝国化学産業のＨ８−タｒＰ、Ｈ
８−７ｊｐなどを上げることができるが、これに限定さ
れるものでない。これらの液晶の中には液晶に溶解する
二色性染料、減粘剤等と添加しても何ら支障はない。Although the liquid crystal used in the liquid crystal display element of the present invention may be a nematic liquid crystal used in calculators, watches, etc., the effects of the present invention are particularly noticeable in the case of ferroelectric liquid crystal. Specifically, a liquid crystal having ferroelectricity has a chiral smectic C phase (
SmC), H phase (SmH*), I phase (SmI”), J
phase (SmJ*), K phase (SmK*), G phase (SmG*
) or F phase (SmF*). Specific liquid crystal compositions include Chisso's C8-1oit and C3-tot.
i, C5-10/! , Merck (7) ZLI-J4#1.
ZLI-J4AI, Teikoku Kagaku Sangyo H8-tarP, H
8-7jp, etc., but is not limited thereto. There will be no problem in adding dichroic dyes, thinners, etc. that dissolve in the liquid crystal to these liquid crystals.
液晶表示素子においてセルの厚さは０．ｊμからｉｓμ
がよく、更に好ましくはｌμから／Ｑμである。シアノ
エチルセルロースよりなる配向膜には液晶表示素子のセ
ル厚を規定するスペーサーを散布してもよいし、シアン
エチルセルロース中に添加してもよい。In a liquid crystal display element, the cell thickness is 0. jμ to isμ
is good, and more preferably from lμ to /Qμ. A spacer that defines the cell thickness of a liquid crystal display element may be sprinkled on the alignment film made of cyanoethylcellulose, or may be added to the cyanethylcellulose.
実施例／。Example/.
厚さ／、／ｗのガラス基板上にインジュウム・錫の酸化
物よりなる透明電極を設はシアノエチルセルロースのメ
チルピロリド７１．０％溶液をスピンコーターを用い、
３！００ｒｐｍの回転数で１分間で塗布し、１２０ °
Ｃで１時間処理をして一方の基板とした。他方の基板は
日立化成製のｐｒｘ−ｔ４Ｉｏｏを同じくスピンコータ
ーで塗布しｌ−０°Ｃで７時間次いでＪｊｏｏＣで７時
間熱処理した。A transparent electrode made of indium/tin oxide was placed on a glass substrate with a thickness of /, /w.
Apply in 1 minute at 3,00 rpm, 120°
One of the substrates was prepared by treating with C for 1 hour. The other substrate was coated with prx-t4Ioo manufactured by Hitachi Chemical Co., Ltd. using a spin coater, and then heat-treated at l-0°C for 7 hours and then at JjooC for 7 hours.
これら両者の塗布面をナイロン布で３回、同一方向にラ
ビング処理を行った。これらの基板により基板間隙／、
ｒμのセルを作成し、チッソ社製の強誘電性液晶Ｃ８１
０／／を注入した。注入後いったん温度を１０００Ｃ″
！で上げその後／ ’Ｃ／分の割合でｊｊ’（：’″１
で降温した。The coated surfaces of both were rubbed three times in the same direction with a nylon cloth. These substrates reduce the substrate gap/
Create an rμ cell and use Chisso's ferroelectric liquid crystal C81.
0// was injected. After injection, the temperature was raised to 1000C''
! Then raise / 'jj' at the rate of 'C/min'(:'''1
The temperature dropped.
液晶は均一な配向を示し双安定性も良好であった。The liquid crystal exhibited uniform alignment and good bistability.
実施例コ。Example.
実施例１と同様にして作成したシアノエチルセルロース
を設けた基板と他方、透明導電膜の上にポリビニルアル
コール（クラレ製ホハール１０３）の−２％溶液をスピ
ンコーター（Ｊ！００ｒｐｍ。A -2% solution of polyvinyl alcohol (Hohar 103 manufactured by Kuraray) was coated on a substrate provided with cyanoethyl cellulose prepared in the same manner as in Example 1 and on the other hand, a transparent conductive film using a spin coater (J!00 rpm).
１分間回転）で塗布し、ｔｓｏ’ｃで熱処理してもう一
方の基板とした。It was coated using a 1-minute rotation) and heat-treated using a tso'c to prepare the other substrate.
シアノエチルセルロース面をナイロン布で３回ラビング
処理を行ったのち、ポリビニルアルコールを配向膜とし
た基板とでセルを作成した。After rubbing the cyanoethyl cellulose surface three times with a nylon cloth, a cell was created using a substrate with polyvinyl alcohol as an alignment film.
このセルにチッソ社製の強誘電性液晶Ｃ８ｔ。This cell is a ferroelectric liquid crystal C8t made by Chisso.
ｌｌを注入し、いったんｔｏｏｏｃまで昇温し次いでｏ
、ｚ’ｃ／分の速度でｊｊ’Ｃまで降温した。このセル
において液晶は均一な配向を示し、双安定性も良好であ
った。The temperature was raised to toooc, and then the o
The temperature was lowered to jj'C at a rate of , z'c/min. In this cell, the liquid crystal showed uniform alignment and good bistability.
Claims (1)
膜を内側にして配置し、その間に液晶を封入してなる液
晶表示素子において、該配向膜の少くとも一方がシアノ
エチルセルロースであることを特徴とする液晶表示素子In a liquid crystal display element in which two transparent electrode substrates each having an alignment film provided on a transparent electrode are arranged with the alignment film inside, and a liquid crystal is sealed between them, at least one of the alignment films is made of cyanoethylcellulose. A liquid crystal display element characterized by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6832787A JPS63234224A (en) | 1987-03-23 | 1987-03-23 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6832787A JPS63234224A (en) | 1987-03-23 | 1987-03-23 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63234224A true JPS63234224A (en) | 1988-09-29 |
Family
ID=13370622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6832787A Pending JPS63234224A (en) | 1987-03-23 | 1987-03-23 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63234224A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5121238A (en) * | 1988-10-17 | 1992-06-09 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal device |
| KR20010067010A (en) * | 2000-11-23 | 2001-07-12 | 이철상 | Binder composition for a thick-film electroluminescent device and electroluminescent device comprising same |
-
1987
- 1987-03-23 JP JP6832787A patent/JPS63234224A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5121238A (en) * | 1988-10-17 | 1992-06-09 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal device |
| KR20010067010A (en) * | 2000-11-23 | 2001-07-12 | 이철상 | Binder composition for a thick-film electroluminescent device and electroluminescent device comprising same |
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