JPH0348481B2 - - Google Patents
Info
- Publication number
- JPH0348481B2 JPH0348481B2 JP56201292A JP20129281A JPH0348481B2 JP H0348481 B2 JPH0348481 B2 JP H0348481B2 JP 56201292 A JP56201292 A JP 56201292A JP 20129281 A JP20129281 A JP 20129281A JP H0348481 B2 JPH0348481 B2 JP H0348481B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- polymer liquid
- cell
- nesa glass
- glass 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.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
Landscapes
- Physics & Mathematics (AREA)
- Liquid Crystal (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【発明の詳細な説明】
本発明は、カラー偏光板の新規な作成方法に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel method for making color polarizing plates.
近年、液晶表示素子のカラー化や、カメラのフ
イルター等でカラー偏光板の必要性が増加してき
ている。また、従来の偏光板はポリビニルアルコ
ールが原料なので、耐湿性に難が有つた。更に、
長時間連続使用可能温度は60℃以下であり、短時
間使用可能温度でも高々80℃であつた。このよう
な欠点の為に、従来のカラー偏光板はその用途が
制限されており、耐熱性能及び耐湿性能の改良が
望まれている。 In recent years, the need for color polarizing plates has increased due to colorization of liquid crystal display elements and camera filters. Furthermore, since conventional polarizing plates are made from polyvinyl alcohol, they have poor moisture resistance. Furthermore,
The temperature at which it could be used continuously for a long time was 60°C or less, and the temperature at which it could be used for a short time was at most 80°C. Due to these drawbacks, the uses of conventional color polarizing plates are limited, and improvements in heat resistance and moisture resistance are desired.
本発明の目的は、耐湿性及び耐熱性能の良好な
カラー偏光板の作成方法を提供することである。 An object of the present invention is to provide a method for producing a color polarizing plate with good moisture resistance and heat resistance.
本発明のカラー偏光板の作成方法は、以下に記
するような方法である。 The method for producing the color polarizing plate of the present invention is as described below.
液晶形成能を有する基を側鎖に有するような下
記の構造の高分子はサーモトロピツク液晶になる
ことが知られている。（Makromol.Chem.179273
−276，（1978））
このような高分子液晶の側鎖である液晶基が誘
電異方性が負であるような高分子液晶に、分子軸
方向に遷移モーメントを有するＰタイプの二色性
色素を添加する。また、二枚のネサガラス板を同
方向にラビング等の処理をして、同方向の一軸水
平配向を施す。この二枚のネサガラス板をスペー
サーをかいして一軸水平配向セルを形成する。こ
のセルに上記の液晶組成物を加熱しながら封入す
る。このセルを加熱して液晶状態をとらせ、セル
に電場をかけ、高分子液晶組成物をセルに対して
一軸的に水平配向させる。この状態で、室温まで
冷却すると、偏光性を有する膜が得られる。この
膜をセルからとりはずすとカラー偏光板が得られ
る。 It is known that polymers having the structure shown below, which have a group capable of forming liquid crystals in their side chains, form thermotropic liquid crystals. (Makromol.Chem.179273
−276, (1978)) A P-type dichroic dye having a transition moment in the direction of the molecular axis is added to such a polymer liquid crystal whose liquid crystal groups, which are side chains, have negative dielectric anisotropy. Further, the two Nesa glass plates are subjected to a treatment such as rubbing in the same direction to achieve uniaxial horizontal alignment in the same direction. These two Nesa glass plates are interposed with a spacer to form a uniaxial horizontally oriented cell. The above liquid crystal composition is sealed in this cell while being heated. This cell is heated to assume a liquid crystal state, and an electric field is applied to the cell to align the polymeric liquid crystal composition uniaxially and horizontally with respect to the cell. When this state is cooled to room temperature, a film having polarizing properties is obtained. When this film is removed from the cell, a color polarizing plate is obtained.
このようにして作成されたカラー偏光板は、従
来のポリビニルアルコールでできているカラー偏
向板と違つて、耐湿性、耐熱性共に非常によく改
良される。 The color polarizing plate prepared in this way has significantly improved moisture resistance and heat resistance, unlike conventional color polarizing plates made of polyvinyl alcohol.
以下、実施例に従い本発明の態様を説明する。 Hereinafter, aspects of the present invention will be explained according to Examples.
実施例 １
Makromol.Chem.179273−276（1978）記載の
方法で下記の構造のポリメタクリレート（以下Ｐ
−６−１−MAと略する）を合成した。Ｐ−６−
１−MAは、150℃から177℃の間でネマチツク層
となつた。Example 1 A polymethacrylate having the following structure (hereinafter P
-6-1-MA) was synthesized. P-6-
1-MA formed a nematic layer between 150°C and 177°C.
また、Ｐタイプの二色性色素として、BDH社
製のＤ−35（下記の構造）の0.8部をＰ−６−１−
MA99.2部に加え、高分子液晶組成物を形成し
た。これは152℃から175℃の間でネマチツク層と
なつた。 In addition, as a P-type dichroic dye, 0.8 part of D-35 (structure below) manufactured by BDH was added to P-6-1-
In addition to 99.2 parts of MA, a polymer liquid crystal composition was formed. This became a nematic layer between 152℃ and 175℃.
また、ラビングにより一軸性の水平配向処理を
施した厚み50μｍのネサガラスセルを用意した。
このセルに上記の高分子液晶組成物を封入し、
160℃に加熱しながら、セルの両極に100Vの電圧
を印加した。この状態で、室温まで冷却し、電圧
の印加をやめた。注意深くセルを高分子液晶組成
物からはがした。 Further, a Nesa glass cell having a thickness of 50 μm and subjected to a uniaxial horizontal alignment treatment by rubbing was prepared.
The above polymer liquid crystal composition is sealed in this cell,
A voltage of 100V was applied to both poles of the cell while heating it to 160°C. In this state, it was cooled to room temperature and the voltage application was stopped. The cell was carefully peeled off from the polymeric liquid crystal composition.
以上で得た高分子液晶組成物はフイルム状であ
り赤紫色であり、偏光性を有していた。 The polymer liquid crystal composition obtained above was film-like, reddish-purple in color, and had polarizing properties.
このようにして、赤紫色のカラー偏光板が作成
できた。また、このカラー偏光板は耐湿性、耐熱
性共にすぐれていた。 In this way, a reddish-purple color polarizing plate was created. Additionally, this color polarizing plate had excellent moisture resistance and heat resistance.
以上述べたように、本発明によれば、高分子液
晶を原料としているので、耐湿性・耐熱性に優れ
ており、さらに、同一方向に水平配向処理された
ネサガラスセル中で電場により水平配向させてい
るので、各高分子液晶及び各二色性色素が全面に
わたつて均一な一軸性を有することになる。従つ
て、均一でムラのない偏光性を有している。 As described above, according to the present invention, since polymer liquid crystal is used as a raw material, it has excellent moisture resistance and heat resistance. Therefore, each polymer liquid crystal and each dichroic dye have uniform uniaxiality over the entire surface. Therefore, it has uniform and even polarization.
Claims (1)
るネマチツク層を呈するサーモトロピツク高分子
液晶に添加する工程と、 該高分子液晶を対向する内面が同一方向に水平
配向処理されたネサガラスセル中に封入する工程
と、 該高分子液晶を加熱溶融する工程と、 該ネサガラスセルに対して垂直方向に電場をか
けて該高分子液晶を一軸的に水平配向させる工程
と、 該水平配向された高分子液晶を室温まで冷却し
た後、該電場を除去する工程と、 該ネサガラスセルを該高分子液晶よりとりはず
す工程とを有することを特徴とするカラー偏光板
の作成方法。[Claims] 1. A step of adding a P-type dichroic dye to a thermotropic polymer liquid crystal exhibiting a nematic layer with negative dielectric anisotropy, and a step in which the opposing inner surfaces of the polymer liquid crystal are in the same direction. a step of encapsulating the polymer liquid crystal in a Nesa glass cell that has been horizontally aligned; a step of heating and melting the polymer liquid crystal; and a step of applying an electric field in a vertical direction to the Nesa glass cell to uniaxially horizontally align the polymer liquid crystal. A method for producing a color polarizing plate, comprising: cooling the horizontally aligned polymer liquid crystal to room temperature, and then removing the electric field; and removing the Nesa glass cell from the polymer liquid crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56201292A JPS58102204A (en) | 1981-12-14 | 1981-12-14 | Formation of color polarizing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56201292A JPS58102204A (en) | 1981-12-14 | 1981-12-14 | Formation of color polarizing plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58102204A JPS58102204A (en) | 1983-06-17 |
| JPH0348481B2 true JPH0348481B2 (en) | 1991-07-24 |
Family
ID=16438556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56201292A Granted JPS58102204A (en) | 1981-12-14 | 1981-12-14 | Formation of color polarizing plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58102204A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160702A (en) * | 1985-01-09 | 1986-07-21 | Nec Corp | Display element |
| JPS61203409A (en) * | 1985-03-05 | 1986-09-09 | Matsushita Electric Ind Co Ltd | Production of polarizing filter |
| EP0231770B1 (en) * | 1986-01-24 | 1994-04-13 | Celanese Corporation | Light modulator device |
| JPS6361203A (en) * | 1986-09-01 | 1988-03-17 | Mitsubishi Chem Ind Ltd | Polarizing plate and its production |
| JPH07301807A (en) * | 1992-05-13 | 1995-11-14 | F Hoffmann La Roche Ag | Chiral liquid crystal-free disclination alignment method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5027556A (en) * | 1973-07-09 | 1975-03-20 | ||
| US4031092A (en) * | 1975-06-16 | 1977-06-21 | Minnesota Mining And Manufacturing Company | 1,3-Bis-(carboxy-phenylamino)-s-triazines |
| JPS56139506A (en) * | 1980-04-01 | 1981-10-31 | Tetsuo Tsutsui | Visible light-scattering polymer composite and production thereof |
-
1981
- 1981-12-14 JP JP56201292A patent/JPS58102204A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58102204A (en) | 1983-06-17 |
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