JPH0354506A - Polarizing plate - Google Patents
Polarizing plateInfo
- Publication number
- JPH0354506A JPH0354506A JP18871589A JP18871589A JPH0354506A JP H0354506 A JPH0354506 A JP H0354506A JP 18871589 A JP18871589 A JP 18871589A JP 18871589 A JP18871589 A JP 18871589A JP H0354506 A JPH0354506 A JP H0354506A
- Authority
- JP
- Japan
- Prior art keywords
- polarizing plate
- rubbing
- polarization
- base material
- 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
- 230000010287 polarization Effects 0.000 claims abstract description 26
- 238000003851 corona treatment Methods 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000012298 atmosphere Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000975 dye Substances 0.000 abstract description 24
- 239000000463 material Substances 0.000 abstract description 11
- 239000011248 coating agent Substances 0.000 abstract description 8
- 239000004744 fabric Substances 0.000 abstract description 3
- 239000002904 solvent Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004094 surface-active agent Substances 0.000 abstract description 2
- 229920002284 Cellulose triacetate Polymers 0.000 abstract 1
- 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 abstract 1
- 238000005498 polishing Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 6
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000004695 Polyether sulfone Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010336 energy treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 229920006393 polyether sulfone Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000980 acid dye Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002635 aromatic organic solvent Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229920005994 diacetyl cellulose Polymers 0.000 description 1
- 239000000982 direct dye Substances 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は染料で塗布されてなる偏光板に関し更に詳しく
は任意の方向に偏光性を与え、かつその偏光部分が連続
的にパターン化された偏光板に関する.
従来の技術
従来、偏光板を製造する代表的な方法としては、延伸ポ
リビニルアルコール膜をヨウ素で着色したのち透明基板
に貼着する方法がある.この種の偏光板は゛高い偏光度
、透過率の均一性、材質の安定性において優れている.
しかし、この偏光板は、ポリビニルアルコール膜の延伸
方向にのみ偏光性が得られるものであり、この延伸が通
常一方向にしか出来ないため、偏光方向も一方向に限定
され、円状、放射状、波状等の偏光板を製造することが
出来ないという欠点がある.
従って、この種の偏光板を用いて例えば偏光軸が放射状
に伸びた偏光板を得るには、扇状形に切断された、半径
方向に偏光性を有する多数の偏光板を円状に貼着する等
の方法を採用しなければならないため、製作も困難であ
り、高価なものとなり、且つ連続的な偏光軸をもった偏
光板が得られにくいという欠点がある.
一方、ガラス、有機膜等に任意の方向に偏光性を付与せ
しめる方法としては、例えば米国特許第2,400,8
77号等に記載されている方法がある.この方法は、ガ
ラス、或いは有機膜を予め、布、紙、コーティングして
ラビングされた方向に二色性色素を配向させる方法であ
る.この方法は、二色性色素をコーティングする前に、
ガラス、或いは有機膜にラビング処理を行い、このラビ
ング方向に二色性色素を配向させるものであり、ラビン
グ方向を任意に変えることにより、連続的にパターン化
された、むらの少ない偏光板を形成することが出来る.
しかし、該米国特許記載の二色性色素を用い、ガラス、
或いは有機膜に偏光性を直接形威させた場合、偏光能が
低く、コントラストが優れないという欠点がある.
発明が解決しようとする!IN
偏光能が高く、コントラストに優れ、任意の方向に偏光
性を与え、偏光部分が連続的にパターン化された、むら
の少ない偏光板が望まれている.課題を解決するための
手段
色素を塗布してなる偏光板において、偏光軸が任意の方
向であって、偏光能力が高く、コントラストの優れた偏
光板を得るべく鋭意研究を重ねた結果本発明に至った.
即ち、本発明は、基板の全面若しくは所望の部分を任゛
意の方向にラビングした後にコロナ処理を施し、その上
に色素を塗布することにより、任意の方向に偏光性を有
する偏光板を製造するにあたり、ラビング工程、コロナ
処理工程、色素塗布工程の各工程が相対湿度50%以下
の雰囲気中で行われてなる偏光板に関するものである.
コロナ処理は基材のぬれ性を向上させるために良く利用
される表面処理方法であるが、色素を塗布してなる偏光
板の製造において、ラビングした後にコロナ処理を施す
と、ラビング部位が活性化され、色素が効率よく配向し
高い偏光率が得られる.
ところが、ラビング、コロナ処理により活性化された部
位は周囲の環境の影響を受けやすく、場合によっては、
色素がまったく配向しない部分(偏光が生しない部分)
が全面又は部分的に生ずることがある.
本発明者らは、この原因が基板内部及び/又は表面の水
分及び/又は空気中の水分量に関係があり湿度を管理す
ることにより、未配向部分の発生を防止できることを見
い出し、本発明を完戒するに到った.
即ち、ラビング、コロナ処理及び色素塗布の各工程を湿
度50%以下特には45%以下の雰囲気で行うことによ
り、偏光率に優れ、未配向部分(偏光を示さない)のな
い偏光板を得ることが出来た.本発明の偏光板を製造す
るに当り用いられる基材の例としては、トリアセテルセ
ルローズフィルム(板TAC フィルムという)、ジア
セチルセルローズフィルム、セルローズアセテートフィ
ルム、ポリエステルフィルム(以下PET フィルムと
いう)塩化ビニルフィルム(以下PvC フィルムとい
う)、ポリスチレンフィルム、ポリプロピレンフィルム
(以下PPフィルムという)、ボリアξドフィルム、ポ
リエチレンフィルム(以下PRフィルムという)、ポリ
エーテルスルホンフィルム(以下PESフィルムという
)、ポリカーボネートフィルム(以下PCフィルムとい
う)アクリル系フィルム等の高分子フィルム及びガラス
が挙げられる。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a polarizing plate coated with a dye, and more specifically to a polarizing plate which provides polarization in any direction and whose polarizing portion is continuously patterned. Regarding. BACKGROUND OF THE INVENTION Conventionally, a typical method for manufacturing a polarizing plate is to color a stretched polyvinyl alcohol film with iodine and then attach it to a transparent substrate. This type of polarizing plate is excellent in its high degree of polarization, uniformity of transmittance, and stability of the material.
However, this polarizing plate can obtain polarization only in the stretching direction of the polyvinyl alcohol film, and since this stretching can usually only be done in one direction, the polarizing direction is also limited to one direction, such as circular, radial, The disadvantage is that it is not possible to produce polarizing plates with waveforms, etc. Therefore, in order to obtain a polarizing plate in which the polarization axis extends radially using this type of polarizing plate, for example, a large number of polarizing plates cut into fan shapes and having polarizing properties in the radial direction are pasted in a circular shape. This method is difficult and expensive to manufacture, and it is difficult to obtain a polarizing plate with a continuous polarization axis. On the other hand, as a method for imparting polarization in any direction to glass, organic films, etc., for example, U.S. Patent No. 2,400,8
There is a method described in No. 77, etc. This method is a method in which a dichroic dye is oriented in the direction of rubbing a glass or organic film coated with cloth, paper, or the like. In this method, before coating the dichroic dye,
A rubbing process is applied to glass or an organic film, and the dichroic dye is oriented in the rubbing direction. By arbitrarily changing the rubbing direction, a continuously patterned polarizing plate with little unevenness can be formed. You can.
However, using the dichroic dye described in the US patent, glass
Alternatively, if polarization is directly imparted to an organic film, the drawback is that the polarization ability is low and the contrast is not excellent. Invention tries to solve! IN There is a need for a polarizing plate with high polarization ability, excellent contrast, polarization in any direction, continuously patterned polarization portion, and less unevenness. Means for Solving the Problems As a result of intensive research in order to obtain a polarizing plate coated with a dye, the polarization axis of which can be in any direction, high polarization ability, and excellent contrast, the present invention has been achieved. It's arrived. That is, the present invention manufactures a polarizing plate that can polarize light in any direction by rubbing the entire surface or a desired part of the substrate in any direction, applying corona treatment, and coating the dye thereon. The invention relates to a polarizing plate in which the rubbing process, corona treatment process, and dye coating process are performed in an atmosphere with a relative humidity of 50% or less. Corona treatment is a surface treatment method that is often used to improve the wettability of substrates, but in the production of polarizing plates coated with dyes, if corona treatment is applied after rubbing, the rubbed area will be activated. The dye is oriented efficiently and a high polarization rate is obtained. However, areas activated by rubbing and corona treatment are easily affected by the surrounding environment, and in some cases,
Area where the dye is not oriented at all (area where polarized light does not occur)
may occur in whole or in part. The present inventors have discovered that the cause of this is related to the amount of moisture inside and/or on the substrate and/or the amount of moisture in the air, and that by controlling the humidity, it is possible to prevent the occurrence of unoriented portions, and have developed the present invention. I have reached complete commandment. That is, by performing each step of rubbing, corona treatment, and dye coating in an atmosphere with a humidity of 50% or less, especially 45% or less, a polarizing plate with excellent polarization rate and no unoriented portions (not showing polarization) can be obtained. was completed. Examples of substrates used in manufacturing the polarizing plate of the present invention include triacetel cellulose film (hereinafter referred to as TAC film), diacetyl cellulose film, cellulose acetate film, polyester film (hereinafter referred to as PET film), vinyl chloride film ( Polystyrene film, polypropylene film (hereinafter referred to as PP film), polyethylene film (hereinafter referred to as PR film), polyether sulfone film (hereinafter referred to as PES film), polycarbonate film (hereinafter referred to as PC film) ) Examples include polymer films such as acrylic films and glass.
ラビング剤としては、布、紙、皮革、綿、フエルト、パ
フ等を、場合によりクレー、ジルコニア、アルミナ等の
研磨剤と共に用いることが出来る。As the rubbing agent, cloth, paper, leather, cotton, felt, puff, etc. can be used together with an abrasive agent such as clay, zirconia, alumina, etc., if necessary.
又、ラビングの程度は、ラビング剤の種類及び後続する
コロナ処理の程度により異なるが、ラビングの回数は1
〜30回が望ましい.
コロナ処理機としては、市販の各種コロナ処理機が適用
可能である.
コロナ処理の条件としては、使用する基材の種類、コロ
ナ処理後に塗布する色素含有液の組威により異なるが、
1回当りの処理に際しては、工不ルギー密度として20
〜400 W.+wln/ rd 好ましくは50〜
300 W.min/ rrfが必要である.高エネル
ギーの処理は基材の劣力、充填物の表面へのブリード等
が起るため、低エネルギーの方が好ましいが、基材によ
っては、高エネルギーを必要とする場合がある.一回の
処理で不充分な場合は、二回以上多数回の処理を行なう
ことができる.
塗布する二色性色素の例としては、使用する基材の種類
によって異なるが直接染料、酸性染料等の水溶性染料及
びそれらのア旦ン塩及び分散染料、油溶性頗料等の水不
溶性色素等があげられる.これら色素は、通常、水及び
有m溶媒に溶解し、場合によっては、界面活性剤を添加
してラビング、コロナ処理の行なわれた基材に塗布され
る.有機溶媒は、基材の 耐溶剤性により異なるが、一
般的には、メタノール、エタノール、イソプロビルアル
コール等のアルコール類、メチルセロソルプ、エチルセ
ロソルブ等のセロソルプ類、アセトン、メチルエチルケ
トン等のケトン頬、ジメチルホルムアくド、N−メチル
ビロリドン等のアミド類、ベンゼン、トルエン等の芳香
族有機溶媒が挙げられる.
色素の塗布量は色素の偏光性能により異なるが、一般的
には0.05〜1.0g/ポ、好ましくは0.1 〜0
.8g/rrfである.
色PfJ液を基材に塗布する方法としては、バーコーダ
ーコーティングスプレーコーティング、ロールコπティ
ング、グラビアコーター等の種々コ一ティング方法が挙
げられる.
このようにして製造された偏光板は、そのまま使用され
るほか、耐久性の要求される分野においては、PE↑フ
ィルム、pvcフィルム、Pl!Sフィルム等の支持フ
ィルムを接着したり、特殊アクリル樹脂、エボキシ樹脂
等でコーティングして、高耐久性の偏光板として使用さ
れる.
本発明の偏光板は液晶表示装置、装飾用等の各種ディス
プレー、装飾材料ブラインド、サンルーフ等の調光装置
、偏光メガネ、各種カード類に用いることが出来る.
実施例
以下実施例により本発明を更に詳しく説明する.尚、こ
こで、吸収極大波長λlaXでの偏光率ρ(一ax)は
その波長での平行位、透過率TI1(■aX)、直交位
透過率丁.(旧κ)を用いて次式により表される.
実施例l
室内の相対湿度を45%に設定する.
市販の丁AC フィルム(厚さ80μ−、冨士フィルた
後、水洗、乾燥した.そのフィルム表面に移動速度12
m/sec ,設定エネルギー150 Lain/nf
テ:7ロナ処理を実施した.
そのフィルムに、C.I.D?rect Orange
72、c.LDirect BIue67 、C.I
.Direct Gvaen51より戒る黒色染料の1
0%水溶液をグラビアコーターで塗布、乾燥して本発明
の偏光板をえた.この偏光板の視感透遇率y.は39z
、平均偏光率ρは87%であった.実施例2〜3、比較
例1〜2
実施例lと同様の方法で、室内の相対湿度を変更した場
合の結果を表1に示す.又相対湿度60%及び65%に
おいても実施例1と同様にして処理して比較用の偏光板
を得た.
表1
実施例4〜10
実施例lと同様の方法で、室内の相対湿度45%で各種
基板のラビング条件、コロナ処理条件を偏光した場合の
結果を表2に示す.
発明の効果
偏光率にすぐれ偏光むらのない任意の方向に偏光軸をも
った偏光板が容易に得られるようになった.The degree of rubbing varies depending on the type of rubbing agent and the degree of subsequent corona treatment, but the number of times of rubbing is 1.
~30 times is recommended. As the corona treatment machine, various commercially available corona treatment machines can be used. The conditions for corona treatment vary depending on the type of substrate used and the strength of the dye-containing liquid applied after corona treatment.
For each treatment, the engineering energy density is 20
~400 W. +wln/rd preferably 50~
300 W. min/rrf is required. High energy treatment can cause deterioration of the base material and bleed of the filler to the surface, so low energy treatment is preferable, but depending on the base material, high energy may be required. If one time processing is insufficient, you can perform the processing two or more times. Examples of dichroic dyes to be coated include water-soluble dyes such as direct dyes and acid dyes, their ammonium salts, disperse dyes, and water-insoluble dyes such as oil-soluble dyes, although they vary depending on the type of substrate used. etc. These dyes are usually dissolved in water or a certain amount of solvent, and in some cases with the addition of a surfactant, they are applied to a substrate that has been subjected to rubbing or corona treatment. Organic solvents vary depending on the solvent resistance of the base material, but generally include alcohols such as methanol, ethanol, and isopropyl alcohol, cellosolves such as methyl cellosolve and ethyl cellosolve, ketones such as acetone and methyl ethyl ketone, and dimethyl formamine. Examples include amides such as chloride, N-methylpyrrolidone, and aromatic organic solvents such as benzene and toluene. The coating amount of the dye varies depending on the polarization performance of the dye, but is generally 0.05 to 1.0 g/po, preferably 0.1 to 0.
.. 8g/rrf. Various coating methods such as barcoder coating, spray coating, roll coating, and gravure coating can be used to apply the colored PfJ liquid to the substrate. The polarizing plate manufactured in this way can be used as is, and in fields where durability is required, it can be used as PE↑ film, PVC film, Pl! It is used as a highly durable polarizing plate by adhering a support film such as S film or coating it with special acrylic resin or epoxy resin. The polarizing plate of the present invention can be used in liquid crystal displays, various decorative displays, decorative material blinds, light control devices such as sunroofs, polarized glasses, and various cards. EXAMPLES The present invention will be explained in more detail with the following examples. Incidentally, here, the polarization ratio ρ (1ax) at the maximum absorption wavelength λlaX is determined by the parallel position, transmittance TI1 (■aX), and perpendicular position transmittance d. (old κ) is expressed by the following formula. Example 1 The relative humidity in the room is set to 45%. Commercially available AC film (thickness 80μ-, after applying Fuji film, washing with water and drying.
m/sec, set energy 150 Lain/nf
Te: 7rona processing was performed. In that film, C. I. D? rectOrange
72, c. LDirect BIue67, C. I
.. 1 of the black dyes to be warned from Direct Gvaen51
A 0% aqueous solution was applied using a gravure coater and dried to obtain a polarizing plate of the present invention. The luminous transparency of this polarizing plate y. is 39z
, the average polarization ratio ρ was 87%. Examples 2-3, Comparative Examples 1-2 Table 1 shows the results when the indoor relative humidity was changed in the same manner as in Example 1. Comparative polarizing plates were also obtained at relative humidity of 60% and 65% in the same manner as in Example 1. Table 1 Examples 4 to 10 Table 2 shows the results when the rubbing conditions and corona treatment conditions for various substrates were polarized using the same method as in Example 1 at an indoor relative humidity of 45%. Effects of the invention: It is now possible to easily obtain a polarizing plate with an excellent polarization rate and a polarization axis in any direction without polarization unevenness.
Claims (1)
ングした後にコロナ処理を施し、その上に色素を塗布す
ることにより、任意の方向に偏光性を有する偏光板を製
造するにあたり、ラビング工程、コロナ処理工程、色素
塗布工程の各工程が相対湿度50%以下の雰囲気中で行
われてなる偏光板。1. In manufacturing a polarizing plate having polarization properties in any direction by rubbing the entire surface or a desired part of the substrate in any direction, applying corona treatment, and applying a dye thereon, the rubbing step, A polarizing plate in which the corona treatment process and the dye coating process are performed in an atmosphere with a relative humidity of 50% or less.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18871589A JPH0354506A (en) | 1989-07-24 | 1989-07-24 | Polarizing plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18871589A JPH0354506A (en) | 1989-07-24 | 1989-07-24 | Polarizing plate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0354506A true JPH0354506A (en) | 1991-03-08 |
Family
ID=16228521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18871589A Pending JPH0354506A (en) | 1989-07-24 | 1989-07-24 | Polarizing plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0354506A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6965473B2 (en) | 2001-02-07 | 2005-11-15 | Sumitomo Chemical Company, Limited | Polarizing plate and liquid crystal display device using the same |
JP2006293025A (en) * | 2005-04-11 | 2006-10-26 | Mitsubishi Chemicals Corp | Manufacturing method of anisotropic dyestuff film, anisotropic dyestuff film and polarizing element |
EP2280304A2 (en) | 2009-07-08 | 2011-02-02 | Hitachi Displays, Ltd. | Liquid crystal display device having an optically anisotropic film |
-
1989
- 1989-07-24 JP JP18871589A patent/JPH0354506A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6965473B2 (en) | 2001-02-07 | 2005-11-15 | Sumitomo Chemical Company, Limited | Polarizing plate and liquid crystal display device using the same |
US7450305B2 (en) | 2001-02-07 | 2008-11-11 | Sumitomo Chemical Company, Limited | Polarizing plate and liquid crystal display device using the same |
JP2006293025A (en) * | 2005-04-11 | 2006-10-26 | Mitsubishi Chemicals Corp | Manufacturing method of anisotropic dyestuff film, anisotropic dyestuff film and polarizing element |
EP2280304A2 (en) | 2009-07-08 | 2011-02-02 | Hitachi Displays, Ltd. | Liquid crystal display device having an optically anisotropic film |
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