JP3206850B2 - Manufacturing method of elliptically polarizing plate - Google Patents
Manufacturing method of elliptically polarizing plateInfo
- Publication number
- JP3206850B2 JP3206850B2 JP11390793A JP11390793A JP3206850B2 JP 3206850 B2 JP3206850 B2 JP 3206850B2 JP 11390793 A JP11390793 A JP 11390793A JP 11390793 A JP11390793 A JP 11390793A JP 3206850 B2 JP3206850 B2 JP 3206850B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- rectangular
- retardation
- polarizing plate
- polarizing
- 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 - Fee Related
Links
Landscapes
- Polarising Elements (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＳＴＮ（Ｓｕｐｅｒ
Ｔｗｉｓｔｅｄ Ｎｅｍａｔｉｃ）型液晶ディスプレイ
等に用いられる楕円偏光板の製造法に関する。BACKGROUND OF THE INVENTION The present invention relates to an STN (Super
The present invention relates to a method for manufacturing an elliptically polarizing plate used for a Twisted Nematic liquid crystal display or the like.
【０００２】[0002]
【従来の技術】従来より、ＳＴＮ型液晶の複屈折性を利
用した高コントラストな液晶ディスプレイは、パーソナ
ルコンピューターやワードプロセッサなどに用いられて
いる。かかるディスプレイは、液晶の複屈折性に基づく
ため、表示が一般に青色系統ないし黄色系統に着色す
る。そのためＳＴＮ型液晶の複屈折による位相差を補償
し、楕円偏光を直線偏光に戻して着色を打ち消す手段が
講じられている。その手段として偏光板と複屈折性フイ
ルムの位相差板とからなる楕円偏光板を用いる方式が提
案されている。この方式はＦＴＮ方式などと呼ばれてお
り、単層セルによる白黒表示を可能にして、それまでの
別途の液晶セルを重ね合わせるＤ−ＳＴＮ方式の嵩高や
高重量問題を解消している。2. Description of the Related Art Hitherto, high-contrast liquid crystal displays utilizing the birefringence of STN type liquid crystals have been used in personal computers, word processors and the like. Since such a display is based on the birefringence of liquid crystal, the display is generally colored in a blue system or a yellow system. Therefore, means for compensating for the phase difference due to the birefringence of the STN liquid crystal and returning the elliptically polarized light to the linearly polarized light to cancel the coloring has been taken. As a means therefor, a system using an elliptically polarizing plate comprising a polarizing plate and a birefringent film retardation plate has been proposed. This method is called an FTN method or the like, and enables a monochrome display using a single-layer cell, and solves the bulkiness and weight problem of the D-STN method in which a separate liquid crystal cell is superimposed.
【０００３】この楕円偏光板は、上記の如く偏光板と位
相差板を積層することによって得られるもので、更に詳
しくは、偏光板の光学軸と位相差板の光学軸とが所定の
角度をもつように接着剤等を用いて貼着されるのであっ
て、具体的には、特開平４−１２３００８号公報に見ら
れるように、予め製品サイズ以上の大きさの偏光板と位
相差板をそれぞれ裁断しておき、それらを貼着した後に
積層体の縁部を切除して製品サイズの楕円偏光板に仕上
げる方法が行われている。This elliptically polarizing plate is obtained by laminating a polarizing plate and a retardation plate as described above. More specifically, the optical axis of the polarizing plate and the optic axis of the retardation plate have a predetermined angle. a of being stuck with an adhesive or the like to have, specifically, as seen in JP flat 4 -123008, advance or product size of the magnitude of the polarizing plate and the retardation plate Are cut, and after adhering them, the edge of the laminate is cut off to finish the product-sized elliptically polarizing plate.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
方法では、偏光板の裁断工程、位相差板の裁断工程及び
偏光板と位相差板の貼着工程の３工程を別々に行う必要
があり、作業工程が煩雑になり、作業工程上のロスも多
くコストアップにもつながり、連続作業化等の作業工程
の簡略化が望まれていたのである。本作業の最大のポイ
ントは、偏光板と位相差板が所定の光学軸の角度をもつ
ように、いかに要領よく積層・貼着させるかである。例
えば、長尺物の長手方向に対して所定角の光学軸をもつ
偏光フィルムあるいは位相差フィルムが製造できれば、
該フィルムを通常の長手方向に光学軸をもつフィルムを
製造ライン上で積層することにより、連続的に楕円偏光
板を得ることができる。However, in the above-described method, it is necessary to separately perform three steps of a cutting step of the polarizing plate, a cutting step of the retardation plate, and a sticking step of the polarizing plate and the retardation plate. The work process becomes complicated, the loss in the work process is increased, and the cost is increased, and simplification of the work process such as continuous work has been desired. The most important point of this work is how to effectively laminate and attach the polarizing plate and the phase difference plate so as to have a predetermined optical axis angle. For example, if a polarizing film or a retardation film having an optical axis at a predetermined angle with respect to the longitudinal direction of a long object can be manufactured,
An elliptically polarizing plate can be continuously obtained by laminating a film having an optical axis in a normal longitudinal direction on a production line.
【０００５】このような試みとして、筒状に延伸された
フィルムを延伸方向に対して所定の角度で連続的に切断
する方法（特開昭５５−５９４０７号公報）や長尺の偏
光フィルムを長手方向（光学軸）の対して所定角度にな
るようにバイヤス状に切断し、該バイヤス切断板を切断
縁が上下平行線となるように置き換えた状態で継ぎ合わ
せる方法（特開昭５９−２１４８０７号公報）が提案さ
れているが、前者の場合には、筒状フィルムの製造機
（ブロー成型機）が必要となり、かなりのコストアップ
となり実用的でない。また、後者の場合には、バイヤス
切断板を継ぎ合わせる工程が必要となるばかりか、実際
に位相差フィルムと積層した時にバイヤス状に切断線が
入り矩形の楕円偏光板を得ようとすると非常にロスが多
く、いずれの場合も本発明の目的には合致しない。[0005] As such attempts, a method of continuously cutting a film stretched in a cylindrical shape at a predetermined angle with respect to the stretching direction (Japanese Patent Application Laid-Open No. 55-59407) or a method of cutting a long polarizing film into a longitudinal direction. A method in which the sheet is cut into a bias shape so as to have a predetermined angle with respect to the direction (optical axis), and the bias cutting plate is joined so that the cut edges are replaced by upper and lower parallel lines (Japanese Patent Laid-Open No. Sho 59-214807). However, in the former case, a machine for producing a tubular film (blow molding machine) is required, which considerably increases the cost and is not practical. In the latter case, not only is a step of joining the bias cutting plates necessary, but also it is very difficult to obtain a rectangular elliptically polarizing plate in which cutting lines enter into a bias shape when actually laminated with a retardation film. Loss is large and none of the cases meet the purpose of the present invention.
【０００６】[0006]
【課題を解決するための手段】そこで、本発明者等は、
かかる課題を解決すべく鋭意研究を重ねた結果、偏光フ
ィルムと位相差フィルムを接着して楕円偏光板を製造す
るに当たり、上記フィルムのいずれか一方の長尺状物か
ら、矩形の隣接する２辺のそれぞれが延伸軸と所定の角
度をもつように裁断して矩形状物とし、該矩形状物を長
尺状のキャリヤーフィルム上に長尺状のキャリヤーフィ
ルムの延伸軸とは同一ではなく、矩形状物同士は同一の
延伸軸方向となる様に該矩形状物を隣接して複数個連続
して固定すると共に、他方のフィルムの長尺状物を上記
キャリヤーフィルム上の矩形状物と接着させて所定の形
状に裁断する楕円偏光板の製造法が、製造ライン上で連
続的に偏光矩形状物と位相差フィルム、又は偏光フィル
ムと位相差矩形状物を貼着することができ、材料のロス
も少ないことを見出し、本発明を完成するに至った。以
下、本発明について詳述する。Means for Solving the Problems Accordingly, the present inventors have
As a result of intensive studies to solve such a problem, in manufacturing an elliptically polarizing plate by bonding a polarizing film and a retardation film, two adjacent sides of a rectangle are formed from one of the long objects of the film. Are cut so as to have a predetermined angle with the stretching axis to form a rectangular object, and the rectangular object is placed on a long carrier film.
It is not the same as the stretching axis of the
A plurality of the rectangular objects are continuously fixed adjacent to each other so as to be in the stretching axis direction, and a long object of the other film is bonded to the rectangular object on the carrier film and cut into a predetermined shape. Found that the method of manufacturing an elliptically polarizing plate, which can continuously adhere a rectangular polarizing substance and a retardation film, or a polarizing film and a rectangular retardation substance on a production line, and that material loss is small. Thus, the present invention has been completed. Hereinafter, the present invention will be described in detail.
【０００７】本発明における偏光フイルムとしては、特
に制限はなく、偏光素膜をそのまま用いることもできる
が、通常は、偏光素膜の少なくとも片面（通常は両面）
に保護層を積層したものを用いる。ここで偏光素膜とし
ては、ビニルアルコール系重合体／ヨウ素系、ビニルア
ルコール系重合体／２色性染料系、ビニルアルコール系
重合体／ポリエン系、ポリハロゲン化ビニル／ポリエン
系、ポリアクリロニトリル／ポリエン系、ポリ（メタ）
アクリレート／ポリエン系、ポリカーボネート系などが
挙げられる。上記中、ビニルアルコール系重合体とは、
ポリビニルアルコールやエチレン−ビニルアルコール共
重合体などである。保護層としては、セルローストリア
セテートシート、ポリカーボネートシート、ポリメチル
メタクリレートシートをはじめとする光等方性の透明シ
ートが挙げられる。その厚さは１２０〜２００μｍ程度
である。The polarizing film in the present invention is not particularly limited, and a polarizing element film can be used as it is. However, usually, at least one side (usually, both sides) of the polarizing element film is used.
With a protective layer laminated thereon. Here, examples of the polarizing element film include vinyl alcohol-based polymer / iodine-based, vinyl alcohol-based polymer / dichroic dye-based, vinyl alcohol-based polymer / polyene-based, polyvinyl halide / polyene-based, and polyacrylonitrile / polyene. System, poly (meta)
Acrylate / polyene-based, polycarbonate-based and the like can be mentioned. In the above, the vinyl alcohol-based polymer,
Examples thereof include polyvinyl alcohol and ethylene-vinyl alcohol copolymer. Examples of the protective layer include optically isotropic transparent sheets such as a cellulose triacetate sheet, a polycarbonate sheet, and a polymethyl methacrylate sheet. Its thickness is about 120 to 200 μm.
【０００８】また、位相差フイルムとしては、位相差素
膜をそのまま用いることが多いが位相差素膜の少なくと
も片面（通常は両面）に光等方性の保護シートを積層し
た積層シートもあり、該位相差素膜としては、ポリビニ
ルアルコール、エチレン−ビニルアルコール共重合体、
ポリ塩化ビニル、ポリメチルメタクリレート、ポリカー
ボネート、ポリスチレン、ポリエステル、セルロース系
高分子などの高分子からなる分子配向されたフィルムが
用いられる。分子配向は、一軸方向に延伸することによ
り行うのが通常であるが、場合により二軸方向に延伸す
ることもある。延伸倍率は、１．１〜５倍程度とするこ
とが多く、延伸後は適宜エージングを行う。The phase difference film includes a phase difference element.
The film is often used as it is, but at least
One side (usually both sides) is laminated with a light isotropic protective sheet
There is also a laminated sheet, as the retardation film, polyvinyl alcohol, ethylene-vinyl alcohol copolymer,
A molecularly oriented film made of a polymer such as polyvinyl chloride, polymethyl methacrylate, polycarbonate, polystyrene, polyester, or a cellulosic polymer is used. The molecular orientation is usually performed by stretching in a uniaxial direction, but in some cases, the film may be stretched in a biaxial direction. The stretching ratio is often about 1.1 to 5 times, and aging is appropriately performed after stretching.
【０００９】本発明では、上記の偏光矩形状物と位相差
フィルム、又は偏光フィルムと位相差矩形状物を製造ラ
イン上で連続的に貼着するのであるが、一例を挙げて説
明すれば、まず図１に示す如き長尺状の偏光フィルムあ
るいは位相差フィルムいずれか一方のフィルム（２）よ
り、光学軸（延伸軸）と辺ｂｃ及び光学軸（延伸軸）と
辺ａｂがそれぞれ所定角（光学軸と辺ｂｃの角度をα°
とすると光学軸と辺ａｂの角度は通常α°＋９０°とな
る）をもつように矩形（ａｂｃｄ）に裁断して偏光矩形
状物あるいは位相差矩形状物いずれか一方の矩形状物
（１）を得る。次に図２に示す如きポリエチレン、ポリ
エステル、ポリプロピレン等のキャリヤーフィルム
（４）上に長尺状のキャリヤーフィルムの延伸軸とは同
一ではなく、矩形状物（１）同士は同一の延伸軸方向と
し、該矩形状物（１）の辺ｂｃが該キャリヤーフィルム
の長手方向と一致するように該矩形状物を隣接して複数
個固定する。この時の固定方法としては、両面粘着テー
プ等を用いることができる。こうして該矩形状物（１）
が固定されたキャリヤーフィルム（４）は、図３に示す
如き製造ライン上で他のもう一方のフィルム（５）と連
続的に貼着されるのである。In the present invention, the above-described rectangular rectangular article and the retardation film, or the polarizing film and the rectangular retardation article, are continuously adhered on a production line. First, the optical axis (stretching axis) and the side bc and the optical axis (stretching axis) and the side ab are respectively formed by a predetermined angle (from either the long polarizing film or the retardation film (2) shown in FIG. 1). The angle between the optical axis and the side bc is α °
Then, the angle between the optical axis and the side ab is usually α ° + 90 °), and cut into a rectangle (abcd), and either a rectangular rectangular object or a rectangular phase difference member (1) Get. Then polyethylene as shown in FIG. 2, polyester, and the stretching axis of the carrier film (4) elongated carrier film on the polypropylene the
Rather than one, rectangular objects (1) are in the same stretching axis direction
The rectangular objects (1) are adjacent to each other so that the side bc of the rectangular objects (1) coincides with the longitudinal direction of the carrier film.
Fix them individually . As a fixing method at this time, a double-sided adhesive tape or the like can be used. Thus, the rectangular object (1)
The carrier film (4) to which is fixed is continuously attached to the other film (5) on the production line as shown in FIG.
【００１０】つまり、連続的に流れる該キャリヤーフィ
ルム（４）の上部より、接着面に予め接着剤（６）が塗
工された他方のフィルム（５）が連続的に供給されると
同時にローラー（８）転圧等により空気が混入しないよ
うに該矩形状物（１）と該フィルム（５）が圧着される
のである。（矩形状物（１）の表面にポリエチレンフイ
ルム等の保護層が設けられている時はフイルム（５）が
貼着される前に剥がしておく必要がある。）この時に用
いられる接着剤（６）としては、接着性に優れ、かつ楕
円偏光板の光学特性に悪影響を与えないものであれば、
粘着剤でもよく特に制限されないが、通常はアクリル系
粘着剤等が用いられる。又、該接着剤（６）を該フィル
ム（５）に塗工する方法としては、コンマコーターを用
いた塗工方法等の公知の方法が採用され、塗工後は離型
紙を積層したロール状の長尺物として製造ラインに供さ
れて離型紙を除去しながら上記の接着工程に供されるの
である。That is, the other film (5) having the adhesive surface coated in advance with the adhesive (6) is continuously supplied from the upper portion of the continuously flowing carrier film (4), and at the same time, the roller ( 8) The rectangular object (1) and the film (5) are pressed together so that air is not mixed in by rolling or the like. (When a protective layer such as a polyethylene film is provided on the surface of the rectangular object (1), it must be peeled off before the film (5) is adhered.) ), As long as it has excellent adhesiveness and does not adversely affect the optical characteristics of the elliptically polarizing plate,
The pressure-sensitive adhesive may be used, and is not particularly limited. Usually, an acrylic pressure-sensitive adhesive or the like is used. As a method of applying the adhesive (6) to the film (5), a known method such as a coating method using a comma coater is adopted. Is supplied to the production line as a long product, and is subjected to the above-mentioned bonding step while removing the release paper.
【００１１】又、該接着剤（６）は、該矩形状物（１）
の接着面に塗工しておいてもよい。この場合は、矩形
（ａｂｃｄ）に裁断する前でも後でも良いが、工程の簡
略化を考えると裁断前のフィルム状態（長尺状）で上記
と同様に塗工しておくのが好ましい。なお、接着剤の塗
工は、該矩形状物（１）あるいは該フィルム（５）の一
方で十分である。こうして連続的に積層されてできた楕
円偏光板は、製造ライン上で連続的に製品サイズに裁断
されて実装されていくのである。かくして得られた楕円
偏光板は、ＳＴＮ型液晶セル等の複屈折性液晶セルを用
いたディスプレイ等に用いられる。Further, the adhesive (6) is formed of the rectangular material (1).
May be applied to the adhesive surface. In this case, it may be before or after cutting into a rectangle (abcd). However, in view of simplification of the process, it is preferable to apply in the same manner as described above in a film state (long) before cutting. The application of the adhesive is sufficient for one of the rectangular object (1) and the film (5). The elliptically polarizing plates thus formed by continuous lamination are continuously cut into product sizes and mounted on a production line. The elliptically polarizing plate thus obtained is used for a display using a birefringent liquid crystal cell such as an STN type liquid crystal cell.
【００１２】[0012]
【作 用】本発明は、製造ライン上で連続的に偏光矩
形状物と位相差フィルム、又は偏光フィルムと位相差矩
形状物を貼着することができ、効率良く、良好な楕円偏
光板を製造することができる。[Operation] The present invention is capable of continuously adhering a rectangular polarizing material and a retardation film or a polarizing film and a rectangular retardation material on a production line, and efficiently and favorably forming a good elliptically polarizing plate. Can be manufactured.
【００１３】[0013]
【実施例】以下、本発明について実施例を挙げて更に詳
述する。 実施例１ ポリビニルアルコール系の位相差フィルム［平均重合度
２０００、平均ケン化度９９．７モル％の厚さ６０μｍ
の一軸延伸ポリビニルアルコールフイルム（Ｒ値＝４１
０ｎｍ、延伸倍率１．１５倍、延伸後２２０℃で３０秒
間熱処理したもの）］より、図１に示す如く、光学軸
（延伸軸）と辺ｂｃの角度が３０度になるように１７ｃ
ｍ×２２ｃｍの矩形状物（ａｂｃｄ）を裁断した。同様
にして、位相差矩形状物を数枚裁断した。（保護フィル
ムは、６０μｍ厚みのポリエチレン）次に、該位相差矩
形状物数枚を幅３０ｃｍ、厚み４０μｍのポリエチレン
テレフタレート（ＰＥＴ）フィルム上に、該フィルムの
延伸軸とは同一ではなく、矩形状物（ａｂｃｄ）同士は
同一の延伸軸方向とし、辺ｂｃが該フィルムの長手方向
（製造ラインの流れ方向）と一致するように両面粘着テ
ープで固定し表面のポリエチレンフイルムを剥がした。The present invention will be described below in more detail with reference to examples. Example 1 Polyvinyl alcohol-based retardation film [60 μm in thickness with an average degree of polymerization of 2,000 and an average degree of saponification of 99.7 mol%]
Uniaxially stretched polyvinyl alcohol film (R value = 41
0 nm, a stretching ratio of 1.15 times, and a heat treatment at 220 ° C. for 30 seconds after stretching)] to obtain 17c so that the angle between the optical axis (stretching axis) and the side bc becomes 30 degrees as shown in FIG.
An mx 22 cm rectangular object (abcd) was cut. In the same manner, several rectangular objects having a phase difference were cut. (Protective film is polyethylene having a thickness of 60 μm) Next, several of the rectangular retardation materials are placed on a polyethylene terephthalate (PET) film having a width of 30 cm and a thickness of 40 μm .
The stretching axes are not the same, and the rectangular objects (abcd)
The film was fixed in the same stretching axis direction with a double-sided adhesive tape so that the side bc coincided with the longitudinal direction of the film (flow direction of the production line), and the polyethylene film on the surface was peeled off.
【００１４】製造ライン上で、該フィルムの上部より偏
光フィルム［平均重合度２０００、平均ケン化度９９．
７モル％の一軸延伸ポリビニルアルコールフイルムをヨ
ウ素で染色処理してなる厚さ１８０μｍのフイルム（透
過率４１％、偏光度９９．９％）で、接着面にアクリル
系粘着剤を厚さ２５μｍになるように塗工し、更に厚さ
４０μｍの離型フイルムを積層］を離型フイルムを剥離
しながら供給して該位相差矩形状物と接着していった。
最後に、位相差矩形状物と偏光フィルムの積層体を１５
ｃｍ×２０ｃｍの矩形に裁断して楕円偏光板を得た。On a production line, a polarizing film [average degree of polymerization 2000, average degree of saponification 99.
A film having a thickness of 180 μm (transmittance 41%, degree of polarization 99.9%) obtained by dyeing a 7 mol% uniaxially stretched polyvinyl alcohol film with iodine, and an acrylic pressure-sensitive adhesive having a thickness of 25 μm on the bonding surface. And releasing the release film having a thickness of 40 μm] while supplying the release film while peeling off the release film, and adhered to the rectangular retardation material.
Finally, the laminate of the rectangular retardation material and the polarizing film was
It was cut into a rectangle of cm × 20 cm to obtain an elliptically polarizing plate.
【００１５】実施例２ 実施例１において、位相差フィルムと偏光フィルムを入
れ替えて、つまり裁断された偏光矩形状物上に粘着剤塗
工された位相差フィルムを供給し、実施例１に準じて楕
円偏光板を得た。実施例１及び２で得られた楕円偏光板
について、以下の耐湿性及び耐熱性の測定を行った。結
果は、表１に示す。Example 2 In Example 1, the retardation film and the polarizing film were replaced with each other, that is, an adhesive-coated retardation film was supplied on the cut polarizing rectangular material. An elliptically polarizing plate was obtained. For the elliptically polarizing plates obtained in Examples 1 and 2, the following moisture resistance and heat resistance were measured. The results are shown in Table 1.
【００１６】（耐湿性）４０℃×９５％ＲＨの雰囲気中
で５００時間放置後、目視により外観の検査を行った。
評価基準は、次のとおりとする。 ○：位相差フイルムの剥離、粘着剤の発泡などの外観異
状なし （耐熱性）７０℃乾燥雰囲気中で５００時間放置後、目
視により外観の検査を行った。評価基準は、次のとおり
とする。 ○：位相差フイルムの剥離、粘着剤の発泡などの外観異
状なし(Moisture resistance) After standing in an atmosphere of 40 ° C. × 95% RH for 500 hours, the appearance was visually inspected.
The evaluation criteria are as follows. ：: No appearance abnormality such as peeling of the retardation film or foaming of the pressure-sensitive adhesive (heat resistance) After standing in a 70 ° C. dry atmosphere for 500 hours, the appearance was visually inspected. The evaluation criteria are as follows. ：: No appearance abnormality such as peeling of retardation film or foaming of adhesive
【００１７】[0017]
【表１】実施例 耐湿性 耐熱性 １ ○ ○２ ○ ○ [Table 1] Example Moisture resistance Heat resistance 1 ○ ○ 2 ○ ○
【００１８】[0018]
【発明の効果】本発明は、製造ライン上で連続的に偏光
矩形状物と位相差フィルム、又は偏光フィルムと位相差
矩形状物を貼着することができ、効率良く、良好な楕円
偏光板を製造することができる。According to the present invention, an efficient elliptically polarizing plate can be efficiently adhered to a polarizing film and a retardation film, or a polarizing film and a retardation film, on a production line. Can be manufactured.
【００１９】[0019]
【図１】 長尺状の偏光フィルムあるいは位相差フィル
ムより、偏光矩形状物あるいは位相差矩形状物を裁断し
た時の平面図である。FIG. 1 is a plan view when a rectangular polarizing object or a rectangular retardation material is cut from a long polarizing film or a retardation film.
【図２】 キャリヤーフィルム上に、偏光矩形状物ある
いは位相差矩形状物を固定した時の平面図である。FIG. 2 is a plan view when a polarizing rectangular object or a retardation rectangular object is fixed on a carrier film.
【図３】 製造ライン上で、偏光矩形状物あるいは位相
差矩形状物と他のもう一方のフィルムを貼着するときの
側面図である。FIG. 3 is a side view when a rectangular polarizing material or a rectangular retardation material and another film are adhered on a production line.
【図４】 製造ライン上で、偏光矩形状物あるいは位相
差矩形状物と他のもう一方のフィルムを貼着するときの
平面図である。FIG. 4 is a plan view when a polarizing rectangular object or a retardation rectangular object and another film are adhered on a production line.
（１）ポリビニルアルコール系偏光矩形状物あるいはポ
リビニルアルコール系位相差矩形状物 （２）ポリビニルアルコール系偏光フィルムあるいはポ
リビニルアルコール系位相差フィルム （３）光学軸（延伸軸） （４）キャリヤーフィルム （５）他のもう一方のフィルム （６）接着剤（アクリル系粘着剤） （７）固定用両面粘着テープ （８）転圧ローラー （９）他のもう一方のフィルムの光学軸（延伸軸）(1) Polyvinyl alcohol-based polarizing rectangular substance or polyvinyl alcohol-based retardation rectangular substance (2) Polyvinyl alcohol-based polarizing film or polyvinyl alcohol-based retardation film (3) Optical axis (stretching axis) (4) Carrier film (5) ) Other film (6) Adhesive (acrylic adhesive) (7) Double-sided adhesive tape for fixing (8) Rolling roller (9) Optical axis (stretch axis) of other film
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G02B 5/30 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) G02B 5/30
Claims (1)
て楕円偏光板を製造するに当たり、上記フィルムのいず
れか一方の長尺状物から、矩形の隣接する２辺のそれぞ
れが延伸軸と所定の角度をもつように裁断して矩形状物
とし、該矩形状物を長尺状のキャリヤーフィルム上に長
尺状のキャリヤーフィルムの延伸軸とは同一ではなく、
矩形状物同士は同一の延伸軸方向となる様に該矩形状物
を隣接して複数個連続して固定すると共に、他方のフィ
ルムの長尺状物を上記キャリヤーフィルム上の矩形状物
と接着させて所定の形状に裁断する楕円偏光板の製造
法。In producing an elliptically polarizing plate by adhering a polarizing film and a retardation film, each of two adjacent sides of a rectangle from one of the long films of the film is defined as a stretching axis and a predetermined axis. It is cut at an angle to form a rectangular object, and the rectangular object is lengthened on a long carrier film.
The stretch axis of the carrier film is not the same,
The rectangular objects should be in the same stretching axis direction.
And a method of manufacturing an elliptically polarizing plate in which a plurality of continuous films are fixed adjacent to each other, and a long object of the other film is bonded to a rectangular object on the carrier film and cut into a predetermined shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11390793A JP3206850B2 (en) | 1993-04-15 | 1993-04-15 | Manufacturing method of elliptically polarizing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11390793A JP3206850B2 (en) | 1993-04-15 | 1993-04-15 | Manufacturing method of elliptically polarizing plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06300918A JPH06300918A (en) | 1994-10-28 |
| JP3206850B2 true JP3206850B2 (en) | 2001-09-10 |
Family
ID=14624171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11390793A Expired - Fee Related JP3206850B2 (en) | 1993-04-15 | 1993-04-15 | Manufacturing method of elliptically polarizing plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3206850B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2913147B2 (en) * | 1995-01-30 | 1999-06-28 | 株式会社有沢製作所 | Manufacturing method of laminated polarizing plate |
| JP2913146B2 (en) * | 1995-01-30 | 1999-06-28 | 株式会社有沢製作所 | Manufacturing method of laminated polarizing plate |
| JP2913148B2 (en) * | 1995-01-30 | 1999-06-28 | 株式会社有沢製作所 | Manufacturing method of laminated polarizing plate |
| TW473619B (en) * | 1997-04-16 | 2002-01-21 | Sumitomo Chemical Co | Method for producing an optical film chip and optical film chip intermediate |
| EP1862828A4 (en) * | 2005-02-03 | 2010-11-10 | Kuraray Co | Film pasting device |
| JP2011068782A (en) * | 2009-09-25 | 2011-04-07 | Okura Ind Co Ltd | Method for adhesion processing of functional film |
-
1993
- 1993-04-15 JP JP11390793A patent/JP3206850B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06300918A (en) | 1994-10-28 |
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