JPS59176709A - Polarizing plate - Google Patents
Polarizing plateInfo
- Publication number
- JPS59176709A JPS59176709A JP5119383A JP5119383A JPS59176709A JP S59176709 A JPS59176709 A JP S59176709A JP 5119383 A JP5119383 A JP 5119383A JP 5119383 A JP5119383 A JP 5119383A JP S59176709 A JPS59176709 A JP S59176709A
- Authority
- JP
- Japan
- Prior art keywords
- polarizing
- polarizing plate
- optical absorption
- anisotropy
- film
- 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
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
Landscapes
- Physics & Mathematics (AREA)
- Liquid Crystal (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
Description
【発明の詳細な説明】 く技術分野〉 本発明は偏光板に関する。[Detailed description of the invention] Technical fields> The present invention relates to a polarizing plate.
〈従来技術〉
従来の偏光板には、例えば第1図に示すように1軸方向
に延伸したポリビニルアルコールのフィルムに沃素また
は染料等の偏光物質を吸着させて偏光層lを形成し、そ
の両側の面を酢酸セルロースまたはアセテートセルロー
スのフィルム2および2aで保護した構造のものがある
。しかし、このような構造の偏光板は、用途に応して光
の透過度や色彩を選択することが、偏光物質の吸着条件
によって制限されるのが欠点で、また、高温多湿の環境
における安定性に欠ける。<Prior art> As shown in FIG. 1, for example, in a conventional polarizing plate, a polarizing layer l is formed by adsorbing a polarizing substance such as iodine or dye to a polyvinyl alcohol film stretched in the uniaxial direction, and the polarizing layer l is formed on both sides of the film. There is a structure in which the surface is protected with films 2 and 2a of cellulose acetate or cellulose acetate. However, a polarizing plate with this structure has the disadvantage that the selection of light transmittance and color depending on the application is limited by the adsorption conditions of the polarizing substance, and it is not stable in high temperature and humid environments. Lacks sex.
〈発明の目的〉
本発明の、目的は、従来の偏光板が有する上記のような
欠点を排除し、光の透過率および色彩の選択が容易で、
高温多湿の環境条件においても品質の安定性が優れ、ま
た紫外線の吸収度を選択することのできる偏光板を提供
することにある。<Object of the Invention> The object of the present invention is to eliminate the above-mentioned drawbacks of conventional polarizing plates, to facilitate the selection of light transmittance and color,
It is an object of the present invention to provide a polarizing plate that has excellent quality stability even under high temperature and high humidity environmental conditions, and allows the degree of ultraviolet light absorption to be selected.
〈発明の構成〉
上記の目的を達成するため、本発明による偏光板は、
それぞれ片側の表面に、一方向にラビング処理のほどこ
された2枚のフィルムがラビング処理のほどこされた側
の面を互いに対向させ、がっ、ラビングの方向を平行に
保って平行な間隙をつくり、この間隙に光学的吸収特性
に異方性を示す物質を含んだ偏光物質の層が封入形成さ
れた構造を有する。<Structure of the Invention> In order to achieve the above object, the polarizing plate according to the present invention has two films that have been subjected to a rubbing treatment in one direction on one surface of each side, and a surface on which the rubbing treatment has been applied. It has a structure in which a parallel gap is created by facing each other and keeping the rubbing directions parallel, and a layer of polarizing material containing a substance exhibiting anisotropy in optical absorption characteristics is sealed in this gap. .
〈実施例〉
以下に本発明の実施例を図面に基づいて説明する。第2
図は本発明実施例による偏光板の斜視図で、層構造を明
示するため側面のシール部分は除かれている。図におい
て光学的吸収に異方性を有する偏光物質4を挟んでいる
平行な2枚のフィルム3および3aは、ポリエチレンテ
レフタレート、ポリエチレンテレフタレート、芳香族ポ
リニス、チル樹脂、ポリフェニレンオキシド、ポリサル
ホン、ポリパラキシレン、ポリヒダントイン、ポリイミ
ド、ポリアミド、ポリアミドイミド、ポリパラバン酸、
芳香族ポリアミド、ポリ塩化ビニリデン、ポリプロピレ
ン、ポリ塩化ビニル、ポリエステルスルホン、ポリスチ
レン、ナイロン、ポリ弗化ビニル等のフィルムで、共に
、偏光物質4に触れる方の表面に、互いに平行な方向に
ラビング処理が施されている。フィルム3.3aの断面
に印された矢印はラビングの方向を示している。なお、
両フィルム間の間隙は数ミクロンないし数十ミクロンで
ある。フィルム両端の接着は熱接着の方法(超音波法、
高周波法、溶着性、インパルス法、熱板法等を含む)、
または、糊着による方法(接着剤、感圧接着剤、感熱接
着剤等を用いる)によっている。光学的吸収特性に異方
性を示す偏光層は、光学的吸収特性に異方性を有する二
色性分散性染料、二色性イオン性染料または沃素と、こ
れら光学的吸収特性に異方性を有する物質の「支持体」
となる高分子または低分子の液晶物質との混合体より構
成されている。光学的吸収特性に異方性を有する上記の
物質は、フィルム間に挿入されて後、フィルム面に施さ
れたラビングの方向に配向整ダル、全体として偏光効果
を発揮する。図において参照番号5は、光学的吸収特性
に異方性を有する物質がラビングの方向に配向している
状態を模式図的に示している。<Example> Examples of the present invention will be described below based on the drawings. Second
The figure is a perspective view of a polarizing plate according to an embodiment of the present invention, with side seal portions removed to clearly show the layered structure. In the figure, two parallel films 3 and 3a sandwiching a polarizing material 4 having anisotropy in optical absorption are polyethylene terephthalate, polyethylene terephthalate, aromatic polyvarnish, chill resin, polyphenylene oxide, polysulfone, polyparaxylene. , polyhydantoin, polyimide, polyamide, polyamideimide, polyparabanic acid,
Films of aromatic polyamide, polyvinylidene chloride, polypropylene, polyvinyl chloride, polyester sulfone, polystyrene, nylon, polyvinyl fluoride, etc., are both subjected to a rubbing treatment in parallel directions on the surfaces that touch the polarizing material 4. It has been subjected. The arrow marked on the cross section of the film 3.3a indicates the direction of rubbing. In addition,
The gap between both films is several microns to several tens of microns. Both ends of the film are bonded using thermal bonding methods (ultrasonic method,
(including high frequency method, weldability, impulse method, hot plate method, etc.),
Alternatively, a gluing method (using adhesive, pressure-sensitive adhesive, heat-sensitive adhesive, etc.) is used. The polarizing layer exhibiting anisotropy in optical absorption properties is made of dichroic dispersive dye, dichroic ionic dye, or iodine, which has anisotropy in optical absorption properties, and a dichroic dispersion dye, dichroic ionic dye, or iodine that has anisotropy in optical absorption properties. "Support" of a substance with
It is composed of a mixture with a high molecular or low molecular liquid crystal material. After being inserted between films, the above-mentioned substance having anisotropy in optical absorption properties is oriented in the direction of the rubbing applied to the film surface, and exhibits a polarizing effect as a whole. In the figure, reference number 5 schematically shows a state in which a substance having anisotropy in optical absorption characteristics is oriented in the rubbing direction.
以上は本実施例の構成の説明であるが、以下に本実施例
の製造方法を説明する。片面に布または刷子でラビング
処理を施した、上記高分子のフィルム2枚を、ラビング
処理した面を対向させ、がっ、ラビング方向を平行にし
て重ね、ラビング方向またはラビング方向に直交する方
向の両端部を上記した熱接着の方法または接着剤を用い
る方法により接着、 「底なし袋」状のフィルムを形
成する。次に2枚のフィルム間にスペーサを挿入して数
ミクロンないし数十ミクロンの間隙をつくり、そこに、
上記の二色性分散染料、二色性イオン性染料または沃素
のいづれがと、高分子または低分子の液晶物質との混合
体より成る偏光物質の表面張力を利用する方法、滴下法
、または真空注入法を用いて注入する。フィルム間の間
隙は高々数十ミクロンであり、注入が過剰にならない限
り、注入された偏光物質は「自然の状態」でフィルム間
からこぼれ出ることはない。偏光物質の注入が終れば、
2枚のフィルムから成るこの「底なし袋」の底辺部と上
辺部を熱着法により接着させ、2枚の、ラビング処理の
施されたフィルム間に偏光物質を完全密封することによ
り、本実施例による偏光板が完成する。The above is a description of the configuration of this embodiment, and the manufacturing method of this embodiment will be explained below. Two sheets of the above-mentioned polymer film, one side of which has been rubbed with a cloth or a brush, are stacked with the rubbed surfaces facing each other, with the rubbing directions parallel to each other, and the rubbing direction or the direction perpendicular to the rubbing direction is Both ends are bonded by the above-mentioned thermal bonding method or a method using an adhesive to form a ``bottomless bag''-shaped film. Next, insert a spacer between the two films to create a gap of several microns to several tens of microns, and then
A method that utilizes the surface tension of a polarizing material consisting of a mixture of any of the above dichroic disperse dyes, dichroic ionic dyes, or iodine and a polymer or low molecular liquid crystal material, a dropping method, or a vacuum method. Inject using the injection method. The gap between the films is a few tens of microns at most, and unless the injection is excessive, the injected polarizing material will not "naturally" spill out between the films. Once the polarizing material has been injected,
The bottom and top sides of this "bottomless bag" made up of two films were adhered using a heat bonding method, and the polarizing material was completely sealed between the two rubbed films. The polarizing plate is completed.
〈発明の効果〉
以上の説明から明らかなように、本発明によれば、偏光
物質を基体に吸着させることなく「液状」のまま用いる
ので、偏光物質を構成する光学的吸収特性に異方性を有
する物質の濃度は任意に選ぶことができ、従って、光透
過度および色彩の選択幅が増し、かつ、フィルム材は上
記のように多種の物質より選ぶことができるので、使用
条件に応じて特性の安定した偏光板が得られ、しがも、
偏光物質中に紫外線吸収剤を添加することにより、紫外
線吸収効果がコントロールされた偏光板を得ることも可
能となる。<Effects of the Invention> As is clear from the above explanation, according to the present invention, since the polarizing substance is used in a "liquid state" without being adsorbed to a substrate, the optical absorption characteristics constituting the polarizing substance are anisotropic. The concentration of the substance having can be selected arbitrarily, which increases the range of options for light transmittance and color, and the film material can be selected from a wide variety of substances as described above, depending on the conditions of use. A polarizing plate with stable characteristics can be obtained, and
By adding an ultraviolet absorber to the polarizing material, it is also possible to obtain a polarizing plate in which the ultraviolet absorption effect is controlled.
第1図は従来の偏光板の構成を示す斜視図、第2図は本
発明実施例による偏光板の構成を示す斜視図である。
3.3a −内側の面にラビング処理の施されたフィル
ム
4−偏光物質
5−光学吸収に異方性を有する物質の配向の状態を示す
。
特許出願人 シャープ株式会社
代理人 弁理士面1)新
第1図
第2図FIG. 1 is a perspective view showing the structure of a conventional polarizing plate, and FIG. 2 is a perspective view showing the structure of a polarizing plate according to an embodiment of the present invention. 3.3a - A film whose inner surface has been subjected to a rubbing process 4 - A polarizing substance 5 - The state of orientation of a substance having anisotropy in optical absorption is shown. Patent Applicant Sharp Corporation Agent Patent Attorney 1) New Figure 1 Figure 2
Claims (3)
のほどこされた2枚のフィルムが、ラビング処理のほど
こされた側の面を互いに対向させ、かつ、ラビングの方
向を平行に保って平行な間隙をつくり、この間隙に光学
的吸収特性に異方性を示す物質を含んだ偏光物質の層を
封入形成して成る偏光板。(1) Two films each having one surface rubbed in one direction, with the rubbed surfaces facing each other and keeping the rubbing direction parallel to form a parallel gap. A polarizing plate is formed by forming a layer of polarizing material containing a substance exhibiting anisotropy in optical absorption characteristics in the gap.
染料および沃素から成る物質群の巾より選択した光学的
吸収特性に異方性を示す物質と液晶物質を含んでいるこ
とを特徴とする特許請求の範囲第1項記載の偏光板。(2) The above-mentioned polarizing material contains a substance exhibiting anisotropy in optical absorption characteristics selected from the range of substances consisting of dichroic dispersive dyes, dichroic ionic dyes, and iodine, and a liquid crystal substance. A polarizing plate according to claim 1, characterized in that:
特徴とする特許請求の範囲第1項記載の偏光板。(3) The polarizing plate according to claim 1, wherein the polarizing substance contains an ultraviolet absorber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5119383A JPS59176709A (en) | 1983-03-26 | 1983-03-26 | Polarizing plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5119383A JPS59176709A (en) | 1983-03-26 | 1983-03-26 | Polarizing plate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59176709A true JPS59176709A (en) | 1984-10-06 |
Family
ID=12880036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5119383A Pending JPS59176709A (en) | 1983-03-26 | 1983-03-26 | Polarizing plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59176709A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5004327A (en) * | 1987-12-01 | 1991-04-02 | Svecia Antiqua Limited | Light-polarizing material in the form of sheets or of a web and a method for the manufacture of the material |
JP2020076839A (en) * | 2018-11-06 | 2020-05-21 | 住友化学株式会社 | Polarizing plate, image display device and method for manufacturing polarizing plate |
-
1983
- 1983-03-26 JP JP5119383A patent/JPS59176709A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5004327A (en) * | 1987-12-01 | 1991-04-02 | Svecia Antiqua Limited | Light-polarizing material in the form of sheets or of a web and a method for the manufacture of the material |
JP2020076839A (en) * | 2018-11-06 | 2020-05-21 | 住友化学株式会社 | Polarizing plate, image display device and method for manufacturing polarizing plate |
CN112969938A (en) * | 2018-11-06 | 2021-06-15 | 住友化学株式会社 | Polarizing plate |
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