JPH0290106A - Polarizing plate - Google Patents
Polarizing plateInfo
- Publication number
- JPH0290106A JPH0290106A JP24160188A JP24160188A JPH0290106A JP H0290106 A JPH0290106 A JP H0290106A JP 24160188 A JP24160188 A JP 24160188A JP 24160188 A JP24160188 A JP 24160188A JP H0290106 A JPH0290106 A JP H0290106A
- Authority
- JP
- Japan
- Prior art keywords
- polarizing plate
- base body
- support
- high molecular
- molecular material
- 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
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 229920000642 polymer Polymers 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 description 14
- 230000003287 optical effect Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- 229920002284 Cellulose triacetate Polymers 0.000 description 2
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 1
- 101100191184 Arabidopsis thaliana PPI4 gene Proteins 0.000 description 1
- 101100481800 Arabidopsis thaliana TOC90 gene Proteins 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は偏光板に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a polarizing plate.
［従来の技術］
偏光板は、例えば第１図に示すごとく、偏光子と光学異
方性のないトリアセチルセルロースもしくはＰＭＭＡ等
の透明なフィルムを未延伸で支持体で構成されている。[Prior Art] As shown in FIG. 1, for example, a polarizing plate is composed of a polarizer and an unstretched support of a transparent film such as triacetyl cellulose or PMMA having no optical anisotropy.
［発明が解決しようとする課Ｕ］
しかし従来の偏光板は、その構成要素である支持体を光
学的異方性を持たず、かつ透明なものにするために、−
軸性または二軸性を付与しない方法で作製しなければな
らず、製造方法に大きな制限があった。[Problem to be solved by the invention U] However, in order to make the support, which is a component of the conventional polarizing plate, transparent and without optical anisotropy, -
It had to be manufactured using a method that does not impart axial or biaxial properties, which placed major limitations on the manufacturing method.
高分子材料をフィルム状に成型する方法として溶融、溶
液押し出し法、キャスト法、湿式製膜法、チュウブラー
製膜法、延伸法等が知られている。Melting methods, solution extrusion methods, casting methods, wet film forming methods, tubular film forming methods, stretching methods, and the like are known as methods for forming polymeric materials into film shapes.
キャスト法、湿式製膜法を除いたこれらの方法を用いて
製膜された高分子材料は、通常フィルムに配向応力が働
き、高分子鎖が延伸方向もしくは押し出し方向に配向し
、材料の複屈折によって光学的異方性を持つようになる
。このようなフィルムは、偏光板の支持体としては好ま
しくない。すなわち、偏光板及びその支持体の作製方法
には量産性の高い共押し出し方法、押し出しラミネート
方法が使えないという問題点があった。Polymer materials formed into films using these methods (excluding casting and wet film forming methods) usually have orientation stress acting on the film, causing the polymer chains to orient in the stretching or extrusion direction, resulting in the birefringence of the material. It becomes optically anisotropic. Such a film is not preferred as a support for a polarizing plate. That is, the method for producing a polarizing plate and its support has a problem in that coextrusion methods and extrusion lamination methods, which are highly mass-producible, cannot be used.
高分子の光学異方性は材料の複屈折の大きさで決まる。The optical anisotropy of a polymer is determined by the magnitude of the material's birefringence.
例えば、プラスチックス″８７ Ｖｏｌ、３ｇ、Ｎ。For example, Plastics "87 Vol. 3g N.
７ ＰＰＩ４に示されたように、一般に、分子が配向し
た時にはその複屈折Δｎは、
Δｎ＝ＦΔｎ本
で示され、配向関数Ｆと固有複屈折Δｎヶとに関係があ
る。すなわちΔｎｔが正の材料とΔｎが負の材料を適当
な重量比で混合する事によりΔｎが零となるように調整
する事ができる。7 As shown in PPI4, when a molecule is oriented, its birefringence Δn is generally expressed as Δn=FΔn, which is related to the orientation function F and the intrinsic birefringence Δn. That is, by mixing a material with a positive Δnt and a material with a negative Δn at an appropriate weight ratio, Δn can be adjusted to zero.
そこで本発明では、支持体のフィルムの材料を限定する
事によって、量産性の優れた偏光板を提供することを目
的とするものである。Therefore, an object of the present invention is to provide a polarizing plate that can be easily mass-produced by limiting the material of the support film.
［課題を解決するための手段Ｊ
本発明の偏光板は
（１）少なくとも１層の偏光子と、少なくとも一層の支
持体を有する偏光板において、上記支持体に、固有複屈
折が正の高分子材料と固有複屈折が負の高分子材料の混
合物から成ることを特徴とする。[Means for Solving the Problems J] The polarizing plate of the present invention includes (1) a polarizing plate having at least one layer of polarizer and at least one layer of support, in which the support includes a polymer having positive intrinsic birefringence; It is characterized by being made of a mixture of materials and polymeric materials with negative intrinsic birefringence.
（２）上記支持体としての混合ポリマーを、延伸した事
を特徴とする。(2) The mixed polymer used as the support is stretched.
（３）上記混合物から成る支持体の固有複屈折がＯであ
るドを特徴とする。(3) It is characterized in that the support made of the above mixture has an intrinsic birefringence of O.
以下、実施例により本発明の詳細を示す。Hereinafter, the details of the present invention will be shown by examples.
なお本発明のΔｎ’ ＜０の高分子材料としてはポリメ
タクリル酸メチル、ボワスチレンを用いる事ができる。Note that polymethyl methacrylate and boistyrene can be used as the polymer material with Δn'<0 in the present invention.
本発明のΔｎ’ ＞Ｏの高分子材料としてはポリカーボ
ネー１−、ポリフェニレンオキサイド ボワエチレンテ
レフタレート、ホモ塩化ヴイニル、ポリエチレンを用い
る事ができる。Polycarbonate 1-, polyphenylene oxide boa ethylene terephthalate, homovinyl chloride, and polyethylene can be used as the polymer material with Δn'>O in the present invention.
Δｎ ’ ＝ −０，００４３であるポリメタクリル酸
メチルとΔｎ’＝０．０２７であるポリヴイニルクロラ
イドを重量比において、ｇｌ、７：１ｇ、３で混合し
樹脂材料を押出機において加熱溶融した？＆Ｔダ１′の
スリットからフィルム状に押し出し、ボソヴイニルアル
コールおよびヨウ素からなる偏光子にコーティングした
。ＡＣ剤としてはポリエステル系のものを用いた。得ら
れたフィルムを一時を取り、再度同様の処理を行い、支
持体−偏光子−支持体なる構成の偏光板を得た。本偏光
板は、偏光特性も良く、支持体として未延伸のトリアセ
チルセルロースを用いたものと同様の光学特性を持って
いた。Polymethyl methacrylate with Δn' = -0,0043 and polyvinyl chloride with Δn' = 0.027 were mixed in a weight ratio of 7:1 g, 3.
Was the resin material heated and melted in an extruder? It was extruded into a film through the slit of &T da 1' and coated on a polarizer made of bosovinyl alcohol and iodine. A polyester-based AC agent was used. The obtained film was temporarily removed and subjected to the same treatment again to obtain a polarizing plate having a support-polarizer-support structure. This polarizing plate had good polarizing properties and optical properties similar to those using unstretched triacetylcellulose as a support.
［比較例］
Δｎ ” ＝ −０，００４３であるポリメタクリル酸
メタクツレートを実施例と同様の方法で押出機において
加熱溶融したｆ＆Ｔダイのスリットからフィルム状に押
し出し、ポリヴイニルアルコールおよびヨウ素からなる
偏光子にコーティングした。ＡＣ剤としてはポリエステ
ル系のものを用いた。得られたフィルムを一時巻取り、
再度同様の処理を行い、支持体−偏光子−支持体なる構
成の偏光板を得た。[Comparative Example] Polymethacrylic acid methactulate having Δn ” = −0,0043 was heated and melted in an extruder in the same manner as in the example and extruded into a film through the slit of an f&T die, and polarized light consisting of polyvinyl alcohol and iodine was extruded. A polyester-based AC agent was used.The obtained film was temporarily rolled up and
The same process was performed again to obtain a polarizing plate having a support-polarizer-support structure.
本偏光板には、光学異方性が存在し偏光板としての特性
は得られなかった。This polarizing plate had optical anisotropy and could not have properties as a polarizing plate.
以上一実施例を述べたが、本発明は上記の実施例に用い
た方法のみならず他のフィルムの成型方法を用いても同
様の効果が得られる。Although one embodiment has been described above, the present invention can obtain similar effects not only by the method used in the above embodiment but also by using other film forming methods.
［発明の効果］
以上述べたように、本発明では、支持体のフィルムの材
料を限定する事によって、量産性の優れた偏光板用の支
持体を提供することができる。[Effects of the Invention] As described above, in the present invention, by limiting the material of the film of the support, it is possible to provide a support for a polarizing plate that can be easily mass-produced.
第１図は、偏光板を表す図である。 １１：偏光子 １２： 支持体 エン上 出願人 セイコーエプソン株式会社 FIG. 1 is a diagram showing a polarizing plate. 11: Polarizer 12: Support Enjo Applicant: Seiko Epson Corporation
Claims (3)
持体を有する偏光板において、上記支持体が、固有複屈
折が正の高分子材料と固有複屈折が負の高分子材料の混
合物から成ることを特徴とする偏光板。(1) In a polarizing plate having at least one layer of polarizer and at least one layer of support, the support is made of a mixture of a polymeric material with positive intrinsic birefringence and a polymeric material with negative intrinsic birefringence. A polarizing plate characterized by:
を特徴とする請求項一記載の偏光板。(2) The polarizing plate according to claim 1, wherein the mixed polymer serving as the support is stretched.
る事を特徴とする請求項一記載の偏光板。(3) The polarizing plate according to claim 1, wherein the support made of the mixture has an inherent birefringence of 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24160188A JPH0290106A (en) | 1988-09-27 | 1988-09-27 | Polarizing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24160188A JPH0290106A (en) | 1988-09-27 | 1988-09-27 | Polarizing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0290106A true JPH0290106A (en) | 1990-03-29 |
Family
ID=17076744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24160188A Pending JPH0290106A (en) | 1988-09-27 | 1988-09-27 | Polarizing plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0290106A (en) |
-
1988
- 1988-09-27 JP JP24160188A patent/JPH0290106A/en active Pending
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