JPS60131520A - Orienting agent for liquid crystal cell - Google Patents
Orienting agent for liquid crystal cellInfo
- Publication number
- JPS60131520A JPS60131520A JP23984683A JP23984683A JPS60131520A JP S60131520 A JPS60131520 A JP S60131520A JP 23984683 A JP23984683 A JP 23984683A JP 23984683 A JP23984683 A JP 23984683A JP S60131520 A JPS60131520 A JP S60131520A
- Authority
- JP
- Japan
- Prior art keywords
- polybutadiene
- number average
- liquid crystal
- weight
- crystal cell
- 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
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
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
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】 技術分野 □ 本発明は液晶セルの平行配向処理剤に関する。[Detailed description of the invention] Technical field □ The present invention relates to a parallel alignment treatment agent for liquid crystal cells.
従来技術と問題点
液晶分子を透刷電極付きガラス基板に平行配向させるた
めの基板処理剤として、従来ポリイミドがもっとも一般
的に使用なれた。しかしポリイミド樹脂は黄色を帯びて
い慝ので、液晶セルをやや暗くする欠点があシ、またポ
リイミドプレポリマは温度および湿度によりて保存中に
劣化し、また塗布した後に硬化させるには３３０〜４０
０°Ｃの高温を要する欠点もあった。Prior Art and Problems Conventionally, polyimide has been most commonly used as a substrate treatment agent for aligning liquid crystal molecules parallel to a glass substrate with transparent electrodes. However, polyimide resin has a yellowish color, which makes the liquid crystal cell a little dark.Also, polyimide prepolymer deteriorates during storage due to temperature and humidity, and it takes 330~400℃ to cure after coating.
It also had the disadvantage of requiring a high temperature of 0°C.
発明の目一
本発明の目的は、明るくかつ液晶分子の平行配向能力に
優れている液晶セル用配向処理剤を提供するこメである
。 −
発明の格成
本発明の上記目的は、数平均分子量がｓ、ｏｏ。An object of the present invention is to provide an alignment treatment agent for liquid crystal cells that is bright and has an excellent ability to align liquid crystal molecules in parallel. - Characteristics of the Invention The above object of the present invention is to have a number average molecular weight of s, oo.
１□□
〜２００，０００でありて環化率が４０〜８０％である
環化シスｌ、４−ポリブタジェン、および数平均分子量
がｉ、ｏ ｏ ｏ〜ｓｏｏ、ｏｏｏでめる１、２−ポリ
ブタジェンからなる群から選択した少なくとも１種のポ
リブタジェンからなることを特徴とする、液晶セル用配
向処門剤によ鬼□て達成される。1□□ - 200,000 and a cyclization rate of 40 - 80% cyclized cis-1, 4-polybutadiene, and 1,2- with a number average molecular weight of i, o o o - soo, ooo This can be achieved by using an alignment agent for liquid crystal cells, which is characterized by comprising at least one type of polybutadiene selected from the group consisting of polybutadiene.
！（ヒシス１，４−ポリブタジェンの数平均分子量が５
，０００よシ低いか、または１，２−ポリブタジェンの
数平均分子量が１．Ｇｏｏよシ低いときは、硬化膜を形
成する反応時間が長くなって実用的でない。また環化シ
ス１，４−ポリブタジェンの数平均分子量が２００，０
００ よシ高いもの、または１．２−ポリブタジェンの
数平均分子量がｓｏｏ、ｏｏ。! (The number average molecular weight of Hisis 1,4-polybutadiene is 5
,000, or the number average molecular weight of 1,2-polybutadiene is lower than 1. When it is lower than Goo, the reaction time to form a cured film becomes long and is not practical. In addition, the number average molecular weight of cyclized cis-1,4-polybutadiene is 200.0.
00 Very high, or the number average molecular weight of 1,2-polybutadiene is soo, oo.
より高いものは実際にプレポリマとして得られていない
。Higher ones are not actually obtained as prepolymers.
環化シス１，４−ポリブタジェンは耐熱性および可撓性
に優れ、１，２−ポリブタジェンは耐熱性および透明性
に優れた硬化膜を形成することができ、ともに液晶分子
を平行→己向する能力に優れている。これらのポリブタ
ジ、、５エンをブレンドする場合は、ブレンドの重量に
も、とづき、環化１，４−ポリプタジェンが１０〜５０
重量％であると両ポリブタジェンの特性を好適に引き出
すことができる。Cyclized cis-1,4-polybutadiene has excellent heat resistance and flexibility, and 1,2-polybutadiene can form a cured film with excellent heat resistance and transparency, and both move liquid crystal molecules from parallel to self. Excellent ability. When blending these polybutadienes, the cyclized 1,4-polyptadiene may contain 10 to 50%, depending on the weight of the blend.
By weight%, the characteristics of both polybutadienes can be suitably brought out.
本発明で使用するポリブタジェンはプレポリマであるの
で、ラジカル発生剤を加えて硬化を促進するとシーｈζ
ｆ ＆ ２．。たとえば、ベンジルパーオキシド、アゾ
ビスイソブチロニトリル、ｔ−ブチルハイ１゛ロバ−オ
キシド、ジクミルパーオキシドなど公知□のものを使用
し、プレポリマ全体の重量にもとづき、０．５〜１０重
量％が適当である。０．５重゛量チよシ少ないと効果が
なく、１０重量％を超えても、量に対応する効果を得ら
れない。Since the polybutadiene used in the present invention is a prepolymer, if a radical generator is added to accelerate curing, the
f&2. . For example, a known □ such as benzyl peroxide, azobisisobutyronitrile, t-butylhydrobutyroxide, dicumyl peroxide, etc. is used, and 0.5 to 10% by weight is used based on the weight of the entire prepolymer. Appropriate. If the amount is less than 0.5% by weight, there is no effect, and even if it exceeds 10% by weight, the effect corresponding to the amount cannot be obtained.
本発明の配向処理剤を使用する液晶は種類を限定せずに
、どの液晶に対しても使用できる。The alignment treatment agent of the present invention can be used for any type of liquid crystal without limiting its type.
実施例１
、数平均分子量約１００，０００ のペレット状１，２
−ポリブタジェｙ（日本合成ゴム、商品名ＲＢ−８１０
）１０重量部をトルエン５００重量部に溶解し、透明電
極４を有するガラス基板２にスピンコードし、２００℃
に２時間加熱して硬化させた。Example 1, pellets 1,2 with a number average molecular weight of about 100,000
-Polybutagey (Japan Synthetic Rubber, trade name RB-810)
) was dissolved in 500 parts by weight of toluene, spin-coded onto a glass substrate 2 having a transparent electrode 4, and heated at 200°C.
It was heated for 2 hours to harden it.
基板２の硬化膜３をラビングした後、スペーサ４で基板
２を隔てた基板２０間に液晶５を入れて、セル厚１０μ
ｍの液晶セルを作製した。After rubbing the cured film 3 of the substrate 2, a liquid crystal 5 is placed between the substrates 20 with the substrates 2 separated by a spacer 4, and the cell thickness is 10μ.
A liquid crystal cell of m was prepared.
液晶セルは透明性に富み、また偏光顕微鏡による観察よ
り、液晶分子はラビングの方向に配向していることが判
明した。The liquid crystal cell is highly transparent, and observation using a polarizing microscope revealed that the liquid crystal molecules were oriented in the rubbing direction.
実施例２
数平均分子量３，０００の液状１，２−ポリブタジェン
（日本曹達、商品名ＰＲ−３０００）１０重量部と、ジ
クミルパーオキシド（日本油脂、商品名パークミルＤ）
０．３重量部とをトルエン３００重量部に溶解してスピ
ンコードしたことの他は、実施例１と同様忙して液晶セ
ルを作製した。このセルの性能は実施例１と同様であっ
た。Example 2 10 parts by weight of liquid 1,2-polybutadiene (Nippon Soda, trade name PR-3000) with a number average molecular weight of 3,000 and dicumyl peroxide (Nippon Oil & Fats, trade name Percmil D)
A liquid crystal cell was fabricated in the same manner as in Example 1, except that 0.3 parts by weight of the sample was dissolved in 300 parts by weight of toluene and spin-coded. The performance of this cell was similar to Example 1.
実施例３
数平均分子量約３０．ＯＯＯＣ１ｍ化シス１，４−ポリ
ブタジェン２５重量％のトリクレン溶液（日本合成ゴム
、商品名Ｊ８Ｒ−ＣＬＢＲ，）１００重量部と、ジクミ
ルパーオキシド（日本油脂、商品名パークミルＤ）１重
量部と勲トリクレン５００重量部に溶解したことの他は
、実施例１と同様にして液晶セルを作製した。、雪の竺
質は実施例１と同様であった。Example 3 Number average molecular weight approximately 30. OOOC 1m-cis-1,4-polybutadiene 25% by weight trichlene solution (Japan Synthetic Rubber Co., Ltd., trade name J8R-CLBR,) 100 parts by weight, dicumyl peroxide (Nippon Oil & Fats Co., Ltd., trade name Permil D) 1 part by weight, and Isao Trichlene A liquid crystal cell was produced in the same manner as in Example 1 except that 500 parts by weight was dissolved. The texture of the snow was the same as in Example 1.
実施例４
数平均分子量約１００，０００ の１，２−ポリブタジ
ェン（日本合成ゴム、商品名ＪＳＲ−ＲＢ８１０）７０
重量部と、数平均分子量約３０．ＯＯＱの１，４−ポリ
ブタジェン２５重量−のトリクレン溶液（日本合成ゴム
、商品名Ｊ Ｓ Ｒ−ＣＬ Ｂ Ｒ） １００重量部と
、ジクぐルバーオキシド５重量部とをトリクレン７００
重量部に溶解したことの他は、実施例１と同様にして液
晶セルを作製した。この性能は実施例１と同様であった
。Example 4 1,2-polybutadiene (Japan Synthetic Rubber, trade name JSR-RB810) with a number average molecular weight of about 100,000 70
Parts by weight and number average molecular weight of about 30. 100 parts by weight of a solution of 25 parts by weight of 1,4-polybutadiene of OOQ (Japan Synthetic Rubber Co., Ltd., trade name JSR-CLBR) and 5 parts by weight of dikgulveroxide were mixed into 700 parts by weight of triclene.
A liquid crystal cell was produced in the same manner as in Example 1 except that the components were dissolved in parts by weight. This performance was similar to Example 1.
発明の効果
本発明によれば、 （ｊ）ポリブタジェンプレポリマう
必要がなく、（ロ）ガラス基板に均一な被膜を形成でき
、（ハ）−化樹脂が透明であるので、液晶が明るく、に
）かつ長期にわたって液晶の平行配向が乱れない。Effects of the Invention According to the present invention, (j) there is no need to use polybutadiene prepolymer, (b) a uniform film can be formed on the glass substrate, and (c) the liquid crystal is transparent, so the liquid crystal is bright. ), and the parallel alignment of liquid crystals is not disturbed over a long period of time.
第１図は液晶セルの略断雫図である。
１・・・透明電極、２・・・ガラス基板、３用樹脂層、
４・・・スペーサ、５・・・液晶。FIG. 1 is a schematic sectional view of a liquid crystal cell. 1...Transparent electrode, 2...Glass substrate, resin layer for 3,
4... Spacer, 5... Liquid crystal.
Claims (1)
って環化率が４０〜８ｏチである環化シスｌ、４−ポリ
ブタジーン、および数平均分子量がｉ、ｏｏｏ〜５００
．０００である１、２−ポリブタジェンからなる群から
選択した少なくとも′１種のポリブタジェンからなるこ
とな特徴とす兎、液晶セル用配向処理剤。 ゛ ２、前記ポリブタジェンと硬化剤とからなり、このポリ
ブタジェンの重量にもとづき、硬化剤が０．５〜１０重
量％である、特許請求の範囲第１項記載の配向処理剤。[Claims] 1. A cyclized cis-1,4-polybutagene having a number average molecular weight of s,ocioLzoo,ooo and a cyclization rate of 40 to 8o, and a number average molecular weight of i,ooo to 500
．． 1. An alignment treatment agent for liquid crystal cells, comprising at least one type of polybutadiene selected from the group consisting of 1,2-polybutadiene. (2) The alignment treatment agent according to claim 1, which is composed of the polybutadiene and a curing agent, and the curing agent is 0.5 to 10% by weight based on the weight of the polybutadiene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23984683A JPS60131520A (en) | 1983-12-21 | 1983-12-21 | Orienting agent for liquid crystal cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23984683A JPS60131520A (en) | 1983-12-21 | 1983-12-21 | Orienting agent for liquid crystal cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60131520A true JPS60131520A (en) | 1985-07-13 |
Family
ID=17050736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23984683A Pending JPS60131520A (en) | 1983-12-21 | 1983-12-21 | Orienting agent for liquid crystal cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60131520A (en) |
-
1983
- 1983-12-21 JP JP23984683A patent/JPS60131520A/en active Pending
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