JPH0854620A - Polarizing plate for plastic liquid crystal cell - Google Patents
Polarizing plate for plastic liquid crystal cellInfo
- Publication number
- JPH0854620A JPH0854620A JP6189749A JP18974994A JPH0854620A JP H0854620 A JPH0854620 A JP H0854620A JP 6189749 A JP6189749 A JP 6189749A JP 18974994 A JP18974994 A JP 18974994A JP H0854620 A JPH0854620 A JP H0854620A
- Authority
- JP
- Japan
- Prior art keywords
- polarizing plate
- liquid crystal
- plastic liquid
- crystal cell
- plastic
- 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
- 229920003023 plastic Polymers 0.000 title claims abstract description 80
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 78
- 239000004033 plastic Substances 0.000 title claims abstract description 78
- 210000002858 crystal cell Anatomy 0.000 title claims abstract description 50
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000002985 plastic film Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 20
- 230000001070 adhesive effect Effects 0.000 abstract description 20
- 229920006267 polyester film Polymers 0.000 abstract description 9
- 229920000728 polyester Polymers 0.000 abstract description 8
- 229920001296 polysiloxane Polymers 0.000 abstract description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract description 5
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011630 iodine Substances 0.000 abstract description 4
- 229910052740 iodine Inorganic materials 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract description 3
- 229920002284 Cellulose triacetate Polymers 0.000 abstract 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 abstract description 2
- 235000019422 polyvinyl alcohol Nutrition 0.000 abstract 1
- 229920000515 polycarbonate Polymers 0.000 description 10
- 239000004417 polycarbonate Substances 0.000 description 10
- 210000004027 cell Anatomy 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920002492 poly(sulfone) Polymers 0.000 description 4
- 229920001230 polyarylate Polymers 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 101100493710 Caenorhabditis elegans bath-40 gene Proteins 0.000 description 1
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 150000001241 acetals Chemical class 0.000 description 1
- -1 acetyl butyl Chemical group 0.000 description 1
- 229940081735 acetylcellulose Drugs 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 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
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はプラスチック液晶表示用
セルに使用されるプラスチック液晶セル用の偏光板に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polarizing plate for plastic liquid crystal cells used in plastic liquid crystal display cells.
【０００２】[0002]
【従来の技術】一般に、液晶表示体は時計、電卓、Ｔ
Ｖ、ＰＣ、ＷＰ、ナビゲーションシステム、計測器、そ
の他の情報機器またはこれらの端末機器の表示体に使用
される。従来、液晶パネルはガラス基板が主体に使用さ
れているが、最近では薄型軽量で耐衝撃性がよく、更に
フレキシビリティ等の形状の特性を保持させる目的から
プラスチック液晶表示体の開発が推進されており、一部
表示体として実用化されている。2. Description of the Related Art Generally, liquid crystal displays are used for clocks, calculators, T
It is used for V, PC, WP, navigation systems, measuring instruments, other information devices or display devices of these terminal devices. Conventionally, liquid crystal panels are mainly used as glass substrates, but recently, development of plastic liquid crystal displays has been promoted for the purpose of maintaining shape characteristics such as thinness and lightness, good impact resistance, and flexibility. And is put to practical use as a display part.
【０００３】これらのプラスチックセル基材としては、
一般に０．８mm〜１mm程度の一軸性ポリエステルフィル
ム（ＰＥＴ）、ポリカーボネート（ＰＣ）、ポリサルフ
ォン（ＰＳＦ）、ポリエーテルスルホン（ＰＥＳ）、ポ
リアリレート（ＰＡＲ）、ポリアリルジグリコールカー
ボネート（ＣＲ−３９）等のフィルム又は光学的透明基
材が使用されている。プラスチック液晶セルは前記のプ
ラスチック基材からなる二枚の基板間に液晶を封入、封
止して構成される。この液晶プラスチックセルの表面に
は偏光板、裏面には偏光板又は反射半透過板付偏光板を
粘着剤を介して貼合せた構造を有する。As these plastic cell substrates,
Generally 0.8 mm to 1 mm uniaxial polyester film (PET), polycarbonate (PC), polysulfone (PSF), polyether sulfone (PES), polyarylate (PAR), polyallyl diglycol carbonate (CR-39), etc. Films or optically transparent substrates have been used. The plastic liquid crystal cell is configured by enclosing and sealing liquid crystal between two substrates made of the plastic base material. This liquid crystal plastic cell has a structure in which a polarizing plate is attached to the front surface and a polarizing plate or a polarizing plate with a reflective semi-transmissive plate is attached to the back surface with an adhesive.
【０００４】[0004]
【発明が解決しようとする課題】このようなプラスチッ
ク液晶表示体に関し、表裏の偏光板の温湿度の変化によ
る伸縮等の影響により、プラスチック液晶表示体に反り
や変形、歪等が発生し、全体がプロペラ状又は不規則な
形に変形し、表示体自体の性能に支障が生じ、長期的に
安定したプラスチック表示体とするのが困難であった。
本発明は従来公知技術の有する欠点に鑑みてなされたも
のであり、プラスチック液晶セルの表面または裏面に装
着、使用したときに、プラスチック液晶表示体に反りや
変形、歪等が生じ難い構造のプラスチック液晶用偏光板
を提供することを課題とする。With respect to such a plastic liquid crystal display body, the plastic liquid crystal display body is warped, deformed, or distorted due to the influence of expansion and contraction due to changes in temperature and humidity of the polarizing plates on the front and back sides. Was deformed into a propeller-like or irregular shape, which hindered the performance of the display body itself, making it difficult to obtain a stable plastic display body for a long time.
The present invention has been made in view of the drawbacks of the prior art, and has a structure in which the plastic liquid crystal display body is unlikely to be warped, deformed, or distorted when attached to or used on the front surface or the back surface of the plastic liquid crystal cell. An object is to provide a polarizing plate for liquid crystal.
【０００５】[0005]
【課題を解決するための手段】前記の課題を達成するた
め、本発明は請求項１に記載のように、プラスチック液
晶セルの表面又は裏面に使用される偏光板の片面に、光
学的透明性の高いプラスチックフィルム基板を積層一体
化した構造を有することを特徴とする。前記プラスチッ
ク液晶セル用偏光板の透明基板の表面には、ハードコー
ト層を形成し（請求項２）、またはアンチグレア、アン
チグレアハードコート層等の反射防止層を形成してもよ
く（請求項３）、更にこれらの透明プラスチックフィル
ム基板、ハードコート層、反射防止層の表面ににはＡＲ
コート層を形成することが推奨される（請求項４）。In order to achieve the above-mentioned object, the present invention provides an optical transparency on one surface of a polarizing plate used for the front surface or the back surface of a plastic liquid crystal cell as described in claim 1. It is characterized by having a structure in which high-quality plastic film substrates are laminated and integrated. On the surface of the transparent substrate of the polarizing plate for a plastic liquid crystal cell, a hard coat layer may be formed (Claim 2), or an antireflection layer such as an antiglare or an antiglare hard coat layer may be formed (Claim 3). Furthermore, AR is applied to the surface of these transparent plastic film substrate, hard coat layer, and antireflection layer.
It is recommended to form a coat layer (Claim 4).
【０００６】一般に偏光板は、ポリビニルアルコール
（ＰＶＡ）、ポリビニルホルマール、ポリビニルアセタ
ール等の高分子基材に沃素又は染料等を吸着させて一定
方位に延伸配向固定することによって偏光素子を形成
し、この偏光素子の両面にトリアセチルセルローズ、ア
セチルセルローズ、アセチルブチルセルローズ等の光学
的透明基材を貼合せ一体化した構造を有する。また、偏
光板の片面にはアクリル系粘着剤を介してポリエステル
フィルムの表面にシリコーンを塗布した離型フイルムを
貼合せた粘着付偏光板として構成される。更に、偏光板
は、表面に反射層を形成したフィルム基板を粘着剤を介
して貼合せて粘着付反射板又は半透過板付偏光板として
構成される。これらの偏光板は、用途に応じて偏光板の
軸角度の指定と共にプラスチック液晶セルに合せたサイ
ズに切断して、プラスチック液晶セルの表裏に貼付され
る。Generally, in a polarizing plate, a polarizing element is formed by adsorbing iodine, a dye or the like on a polymer base material such as polyvinyl alcohol (PVA), polyvinyl formal or polyvinyl acetal and stretching and fixing the same in a fixed direction. It has a structure in which optically transparent base materials such as triacetyl cellulose, acetyl cellulose, and acetyl butyl cellulose are bonded and integrated on both surfaces of the polarizing element. In addition, a pressure-sensitive adhesive polarizing plate is formed by sticking a release film obtained by coating silicone on the surface of a polyester film via an acrylic pressure-sensitive adhesive on one surface of the polarizing plate. Further, the polarizing plate is constructed as a polarizing plate with an adhesive reflection plate or a semi-transmissive plate by laminating a film substrate having a reflective layer formed on the surface via an adhesive. These polarizing plates are attached to the front and back surfaces of the plastic liquid crystal cell after being cut into a size suitable for the plastic liquid crystal cell along with designation of the axis angle of the polarizing plate according to the application.
【０００７】本発明のプラスチック液晶セル用偏光板ａ
は、図１（Ａ）に示すように、粘着付偏光板７の表面に
粘着剤（または接着剤）３′を介して光学的透明性の高
いフィルム基板４を積層一体化させた構造を有する。フ
ィルム基板４の具体例としては、ポリエステルフィルム
（ＰＥＴ）、ポリカーボネートフィルム（ＰＣ）、ポリ
サルフォンフィルム（ＰＳＦ）、ポリアリレートフィル
ム（ＰＡＲ）が挙げられ、通常５０〜２００マイクロメ
ートル（μ）の厚さのものが好適に用いられる。Polarizing plate a for plastic liquid crystal cells of the present invention
1 has a structure in which a film substrate 4 having high optical transparency is laminated and integrated on the surface of a pressure-sensitive adhesive polarizing plate 7 with a pressure-sensitive adhesive (or an adhesive) 3'as shown in FIG. 1 (A). . Specific examples of the film substrate 4 include a polyester film (PET), a polycarbonate film (PC), a polysulfone film (PSF), and a polyarylate film (PAR), which usually have a thickness of 50 to 200 micrometers (μ). Those are preferably used.
【０００８】図２はプラスチック液晶セル用偏光板ａの
使用形態の一例を示し、プラスチック液晶セル１２の表
面にプラスチック液晶セル用偏光板ａ、裏面に偏光板
７′を装着したものである。なお、８はプラスチック液
晶セル１２のプラスチックセル基板、１０は液晶層、１
１はシール剤である。また、用途に応じて図３（Ａ）の
ように、プラスチック液晶セル１２′の表面にプラスチ
ック液晶セル用偏光板ａ、裏面に半透過板（反射板）９
を備えた偏光板７、即ち半透過板付プラスチック液晶セ
ル用偏光板ｂを装着する場合がある。この半透過板付プ
ラスチック液晶セル用偏光板ｂは、図３（Ｂ）に示すよ
うに、粘着付偏光板７に粘着剤（または接着剤）３′を
介して半透過板９を貼付したものである。FIG. 2 shows an example of usage of the plastic liquid crystal cell polarizing plate a, in which the plastic liquid crystal cell polarizing plate a is mounted on the front surface and the polarizing plate 7'is mounted on the back surface. In addition, 8 is a plastic cell substrate of the plastic liquid crystal cell 12, 10 is a liquid crystal layer, and 1 is a liquid crystal layer.
1 is a sealant. Further, as shown in FIG. 3A, a plastic liquid crystal cell polarizing plate a is formed on the front surface of the plastic liquid crystal cell 12 'and a semi-transmissive plate (reflecting plate) 9 is formed on the rear surface thereof, as shown in FIG.
There is a case where the polarizing plate 7 provided with, that is, the polarizing plate b for a plastic liquid crystal cell with a semi-transmissive plate is attached. As shown in FIG. 3B, the plastic liquid crystal cell polarizing plate b with a semi-transmissive plate has a semi-transmissive plate 9 attached to an adhesive polarizing plate 7 via an adhesive (or an adhesive) 3 '. is there.
【０００９】[0009]
【作用】本発明によるプラスチック液晶セル用偏光板
は、プラスチック液晶セルの表面又は裏面に装着してプ
ラスチック液晶表示体として構成することにより、温湿
度の変化に対してプロペラ状に反ったり、または変形す
ることがなく、歪等の影響も少なく、長期的に安心して
組立て、使用することが可能となる。The polarizing plate for a plastic liquid crystal cell according to the present invention is mounted on the front surface or the back surface of the plastic liquid crystal cell to form a plastic liquid crystal display body, so that the plastic liquid crystal cell is warped or deformed like a propeller against changes in temperature and humidity. It is possible to assemble and use for a long time with peace of mind because there is little influence of distortion etc.
【００１０】[0010]
【実施例１】図１（Ａ）に示すように、ポリビニルアル
コール（ＰＶＡ）フィルムに沃素を吸着し、延伸配向し
てなる沃素系偏光素子１の両面に５０μのトリアセチル
セルローズ（ＴＡＣ）フィルムから成る偏光基板２を接
着剤を介して積層一体化して偏光板７ａを形成し、この
偏光板７ａにポリエステル（ＰＥＴ）フィルムにシリコ
ーンを塗布したポリエステル離型フイルム６を粘着剤３
を介して偏光板７ａと積層一体化して、粘着付偏光板７
（当社製 ＬＬＣ2 −８２−１２Ｓ、以下、従来品とも
いう）を作製した。さらに、この粘着付偏光板７の表面
にポリエステルフィルム（ＰＥＴ）５０μの光学的透明
フィルム製の透明フィルム基板４を粘着剤３′を介して
積層一体し、本発明によるプラスチック液晶セル用偏光
板ａを作製した。Example 1 As shown in FIG. 1 (A), a polyvinyl alcohol (PVA) film was adsorbed with iodine and stretched and oriented to form an iodine-based polarizing element 1. A polarizing plate 7a is formed by laminating and integrating the polarizing substrate 2 made of the above with an adhesive, and a polyester release film 6 in which silicone is applied to a polyester (PET) film is attached to the polarizing plate 7a.
Laminated with the polarizing plate 7a via the
(Olympus LLC 2 -82-12S, hereinafter also referred to as a conventional product) was prepared. Further, a transparent film substrate 4 made of an optically transparent film of polyester film (PET) 50 μ is laminated and integrated on the surface of the adhesive polarizing plate 7 with an adhesive 3 ′, and a polarizing plate a for a plastic liquid crystal cell according to the present invention is formed. Was produced.
【００１１】プラスチック液晶セル用偏光板ａと従来品
である粘着付偏光板７とをそれぞれ偏光軸４５°にして
１７９．２mm×１３８mmのサイズ即ち約８．４インチの
大きさに切断して、相方の偏光板のカールを確認するた
めに鉄製の平板に離型フイルム面を下にして置き、各偏
光板ａ，７の左右の変形、カールの確認をし、偏光板単
体で平板と同一面上にある相方の平滑な偏光板を選定
し、それぞれ室温２５°Ｃ、および低湿槽（３０°Ｃ−
４０％RH）、さらに４０°Ｃの恒温槽に投入して耐久試
験を行った。５００時間経過後、各偏光板ａ，７を取り
出して前記の平板面に離型フィルム面を下にして置き、
両サイドの変形カールの確認をするために平板面からカ
ールを計測した。The polarizing plate a for a plastic liquid crystal cell and the conventional polarizing plate with adhesive 7 are cut into a size of 179.2 mm × 138 mm with a polarization axis of 45 °, that is, a size of about 8.4 inches, In order to check the curl of the other polarizing plate, put it on an iron flat plate with the release film side down, check the left and right deformations and curls of each polarizing plate a and 7, and check the polarizing plate alone on the same surface as the flat plate. Select the opposite smooth polarizing plate, room temperature 25 ° C, and low humidity tank (30 ° C-
40% RH ), and further put into a constant temperature bath at 40 ° C. to carry out a durability test. After 500 hours, the respective polarizing plates a and 7 were taken out and placed on the flat plate surface with the release film surface facing down,
The curl was measured from the flat plate surface to confirm the deformation curl on both sides.
【００１２】その結果、室温２５°Ｃでの試験では従来
品（ＬＬＣ2 −８２−１２Ｓ）は４４．３mmと大きくカ
ールしているのに対し本発明品（粘着付偏光板ａ）では
平板からの実測値が７．０mmとカールの状態が少なかっ
た。同様に、低湿槽（３０°Ｃ−４０％RH）から取り出
した試料では従来品が９．５mm、本発明品は７．４mmと
若干カールの差が異なり、更に４０°Ｃの恒温槽から取
り出したものでは、従来品は２１．４mm〜２８．４mmと
大きくカールしたが、本発明品では３．０mm〜３．８mm
と極めて変化が少ないことがが判明した。即ち、本発明
のプラスチック液晶セル用偏光板ａはカール、変形の少
ない構造であることが実証された。[0012] From the results, conventional in the test at room temperature 25 ° C (LLC 2 -82-12S) is the product of the present invention while being curled and 44.3 mm (adhesive polarizing plate with a) the flat The actual measured value was 7.0 mm and there was little curl. Similarly, the sample taken out from the low humidity tank (30 ° C-40% RH ) had a curl difference of 9.5 mm for the conventional product and 7.4 mm for the present invention product, and was further taken out from the constant temperature tank at 40 ° C. In the case of the conventional product, the conventional product was greatly curled at 21.4 mm to 28.4 mm, but in the product of the present invention, it is 3.0 mm to 3.8 mm.
It turned out that there was very little change. That is, it was demonstrated that the polarizing plate a for a plastic liquid crystal cell of the present invention has a structure with little curling and deformation.
【００１３】[0013]
【実施例２】実施例１はプラスチック液晶セル用偏光板
ａおよび粘着付偏光板７、即ち偏光板自体のカールなど
の測定結果であるが、これらをプラスチック液晶表示体
に相当するモデル試料に適用した例について説明する。
図２のプラスチック液晶セル１２の代用として、０．５
mmの厚みの光学的透明なポリカーボネート基板を用意
し、これを１７９．２mm×１３８mm（約８．４インチ）
のサイズに切断した。この平滑なポリカーボネート基板
の表裏に、実施例１で記載したように従来品および本発
明品の偏光板７，ａを同様に軸角度４５°にして１７
９．２mm×１３８mmのサイズに切断し、平板面上で平滑
性を確認、選定した。Example 2 Example 1 shows the measurement results of the curl of the polarizing plate a for plastic liquid crystal cells and the polarizing plate 7 with adhesive, that is, the polarizing plate itself. These are applied to a model sample corresponding to a plastic liquid crystal display. An example will be described.
As a substitute for the plastic liquid crystal cell 12 of FIG.
Prepare an optically transparent polycarbonate substrate with a thickness of mm, which is 179.2 mm x 138 mm (about 8.4 inches).
Cut to size. On the front and back of this smooth polycarbonate substrate, as described in Example 1, the polarizing plates 7 and a of the conventional product and the product of the present invention were similarly set at an axial angle of 45 °.
It was cut into a size of 9.2 mm x 138 mm, and the smoothness was confirmed and selected on the flat plate surface.
【００１４】次に、前記ポリカーボネート基板の表裏に
従来品を富士プラスチック機械（株）製のラミパッカー
により表裏の偏光軸が直交するように貼合せた。同様
に、本発明品のプラスチック液晶セル用偏光板ａも表裏
の偏光軸を直交させて、図２の如く、プラスチック液晶
セル１２と同様の構成でポリカーボネート基板の表裏に
貼付した。Next, a conventional product was attached to the front and back of the polycarbonate substrate with a Ramipacker manufactured by Fuji Plastic Machinery Co., Ltd. so that the polarization axes of the front and back were orthogonal to each other. Similarly, the polarizing plate a for a plastic liquid crystal cell of the present invention was attached to the front and back surfaces of a polycarbonate substrate with the same configuration as the plastic liquid crystal cell 12 as shown in FIG.
【００１５】従来品および本発明品を用いて作製したプ
ラスチック液晶表示体のモデル試料を同様に室温２５°
Ｃ、低湿槽（３０°Ｃ−４０％RH）、更に４０°Ｃの恒
温槽に各々投入し、５００時間後に平板上に置き、平板
面からの左右のカールの測定を行った。室温２５°Ｃの
ものでは、従来品が３．８mm〜４．６mmと若干大きく、
本発明品は２．４mm〜２．７mmとカールが少なかった。
また、低湿槽（３０°Ｃ−４０％RH）では、従来品は
９．８mm〜５．８mmと大きく変化し、本発明品は４．０
mm〜４．２mmとカールが少なかった。４０°Ｃの恒温槽
では、従来品は３．２mm〜４．４mm、本発明品は２．７
mm〜４．４mmであり、両者に大きな相違は見られなかっ
た。しかしながら、従来品はプロペラ状に変形している
のに対し、本発明品のプラスチック液晶セル用偏光板ａ
ではその様な形状の変化は見られなかった。A model sample of a plastic liquid crystal display produced using the conventional product and the product of the present invention was similarly subjected to room temperature of 25 °.
C, low humidity tank (30 ° C.-40% RH ), and further put into a constant temperature tank of 40 ° C., placed on a flat plate after 500 hours, and the curls on the left and right from the flat plate surface were measured. At room temperature of 25 ° C, the conventional product is 3.8 mm to 4.6 mm, which is slightly larger,
The product of the present invention had a small curl of 2.4 mm to 2.7 mm.
Further, in the low humidity tank (30 ° C-40% RH ), the conventional product greatly changes from 9.8 mm to 5.8 mm, and the present invention product has 4.0.
There was little curl, mm to 4.2 mm. In a 40 ° C constant temperature bath, the conventional product is 3.2 mm to 4.4 mm, and the present invention product is 2.7 mm.
mm to 4.4 mm, and there was no significant difference between the two. However, while the conventional product is deformed into a propeller shape, the present invention product has a polarizing plate a for plastic liquid crystal cells.
No such change in shape was observed.
【００１６】[0016]
【実施例３】図１の透明フィルム基板４としてポリエス
テル５０μの光学的透明フィルムを用い、その片面にシ
リコーン系ハードコート剤（東芝シリコーン（株）、ト
スガード５２０）を塗布し、ハードコート皮膜層１３を
形成した（図１（Ｂ））。このハードコート皮膜層付ポ
リエステルフィルム用いて、図１（Ａ）と同様の構成を
もつハードコート付のプラスチック液晶セル用偏光板を
試作した。次に上記のシリコーン系のハードコート液に
ケイ酸微粉（水沢化学工業（株）製 ミズカシルＰ−５
２６）を分散混合したハードコート液を用い、前記と同
様に５０μの光学的透明ポリエステルフィルムの片面に
アンチグレアハードコート層１３′を形成させたアンチ
グレアハードコート付ポリエステルフィルム（図１
（Ｃ））を試作した。これを用いて、図１（Ａ）と同様
の構成のアンチグレアハードコート付プラスチック液晶
セル用偏光板を試作した。Example 3 An optical transparent film of polyester 50 μ was used as the transparent film substrate 4 of FIG. 1, and a silicone hard coat agent (TOSGAARD 520, Toshiba Silicone Co., Ltd.) was applied to one side of the film to form a hard coat film layer 13. Was formed (FIG. 1 (B)). Using this polyester film with a hard coat film layer, a hard coat-attached polarizing plate for a plastic liquid crystal cell having the same structure as shown in FIG. Next, fine silica powder (Mizukasil P-5 manufactured by Mizusawa Chemical Industry Co., Ltd.) was added to the above silicone-based hard coat solution.
26) is dispersed and mixed in the same manner as described above, and an antiglare hardcoat polyester film having an antiglare hardcoat layer 13 ′ formed on one side of an optically transparent polyester film of 50 μ in the same manner as described above (FIG. 1).
(C)) was prototyped. Using this, a prototype of a polarizing plate for a plastic liquid crystal cell with an anti-glare hard coat having the same configuration as that shown in FIG.
【００１７】次に、実施例１と同様に試作した図３
（Ｂ）の半透過板付液晶プラスチック用偏光板ｂ、前記
ハードコート付プラスチック液晶セル用偏光板およびア
ンチグレアハードコート付プラスチック液晶セル用偏光
板の３種類を、それぞれ偏光軸を４５°にして１７９．
２mm×１３８mmのサイズに切断した。また、前記同様に
プラスチック液晶セルの代用として０．５mm厚みのポリ
カーボネート板を同じサイズに切断した。このポリカー
ボネート板の表面に、実施例２と同様に、ハードコート
付プラスチック液晶セル用偏光板を貼合せ、さらに裏面
に反射板付偏光板ｂを直交位に貼合せ、図３（Ａ）のプ
ラスチック液晶表示体のモデル試料を製作した。同様
に、アンチグレアハードコート付プラスチック液晶セル
用偏光板をポリカーボネートの表面に貼付け、さらに裏
面には直交位に反射板付偏光板ｂを貼合せたモデル試料
を作製した。Next, as shown in FIG.
179. Three types of the polarizing plate b for a liquid crystal plastic with a semi-transmissive plate, the polarizing plate for a plastic liquid crystal cell with a hard coat and the polarizing plate for a plastic liquid crystal cell with an anti-glare hard coat, each having a polarization axis of 45 °, 179.
It was cut into a size of 2 mm x 138 mm. Further, a polycarbonate plate having a thickness of 0.5 mm was cut into the same size as a substitute for the plastic liquid crystal cell as described above. Similar to Example 2, a polarizing plate for a plastic liquid crystal cell with a hard coat was attached to the surface of the polycarbonate plate, and a polarizing plate b with a reflection plate was attached to the back surface at an orthogonal position, so that the plastic liquid crystal of FIG. A model sample of the display was manufactured. Similarly, a model sample was prepared in which a polarizing plate for a plastic liquid crystal cell with an anti-glare hard coat was attached to the front surface of polycarbonate, and a polarizing plate with a reflection plate b was attached to the back surface at an orthogonal position.
【００１８】二つのモデル試料をそれぞれ鉄製平板上で
平滑を確認選定して、実施例１と同様に室温２５°Ｃ、
低湿槽（３０°Ｃ−４０％RH）、さらに４０°Ｃの恒温
槽に投入した。５００時間後、試料をそれぞれ平板上に
反射板面を下にして置き、平板面からの左右のカールを
測定した。その結果、室温２５°Ｃではハードコート付
製品では１．２mm〜１．８mmとカールが少なく、また、
アンチグレアハードコートの製品でも１．３mm〜１．７
mmと殆ど変化が見られなかった。低湿槽での製品もハー
ドコート製品で２．０mm〜２．２mm程度の変化であり、
アンチグレアハードコートの製品では２．３mm〜２．１
mmと相方共にカールが少なかった。さらに、恒温槽４０
°Ｃでの条件ではハードコート製品のものでは１．３mm
〜２．２mm、アンチグレアハードコートの製品では１．
４mm〜２．３mmと変化し、前記実施例２の従来品との実
測値と比較しても本発明によるプラスチック液晶表示用
偏光板はカールの変化がきわめて少ないことがわかっ
た。Two model samples were selected and selected for smoothness on an iron flat plate, respectively, at room temperature of 25 ° C. as in Example 1.
The mixture was placed in a low-humidity tank (30 ° C-40% RH ) and a constant-temperature bath at 40 ° C. After 500 hours, each sample was placed on a flat plate with the reflection plate surface facing down, and the curls on the left and right sides of the flat plate surface were measured. As a result, at room temperature of 25 ° C, the product with hard coat has a small curl of 1.2 mm to 1.8 mm, and
1.3 mm to 1.7 for anti-glare hard coat products
There was almost no change in mm. The product in the low-humidity tank is a hard coat product, and the change is about 2.0 mm to 2.2 mm.
2.3mm to 2.1 for anti-glare hard coat products
There was little curl on both sides. Furthermore, the constant temperature bath 40
1.3 mm for hard coat products at ° C
~ 2.2mm, 1. for anti-glare hard coat products
It changed from 4 mm to 2.3 mm, and it was found that the polarizing plate for a plastic liquid crystal display according to the present invention showed very little change in curl even when compared with the measured value of the conventional product of Example 2.
【００１９】さらに、この光学的適用性の高い透明基材
は、前記の通り厚みと材質を選定して積層一体化したプ
ラスチック液晶セル用偏光板としてそれぞれの用途、コ
ストに合わせて開発が出来る。従って本発明のプラスチ
ック液晶セル用偏光板はそれぞれの用途に合わせて選定
し、図１（Ａ）の構成のもの、（Ｂ）のハードコート皮
膜層１３付のもの、（Ｃ）のアンチグレアハードコート
層１３′付のもの、さらに（Ｄ）のようにアンチグレア
ハードコート層１３′の上にＡＲコート層１４付のプラ
スチック液晶セル用偏光板として提供し、各種のプラス
チック液晶表示体として安心して使用でき、各種の応用
方面に展開することが可能である。Further, the transparent substrate having a high optical applicability can be developed as a polarizing plate for a plastic liquid crystal cell in which the thickness and the material are selected and laminated and integrated as described above, according to each application and cost. Therefore, the polarizing plate for a plastic liquid crystal cell of the present invention is selected according to each application, and has the constitution of FIG. 1A, the hard coat film layer 13 of FIG. 1B, and the antiglare hard coat of FIG. Provided as a polarizing plate for a plastic liquid crystal cell having a layer 13 'and further having an AR coat layer 14 on the anti-glare hard coat layer 13' as in (D), it can be safely used as various plastic liquid crystal displays. , It is possible to develop into various application fields.
【００２０】[0020]
【発明の効果】以上説明したように、本発明のプラスチ
ック液晶用偏光板は温湿度の変化による反り、変形、歪
み等がきわめて少なく、これをプラスチック液晶セルの
表面または裏面に装着、使用することにより反りや変形
のない長期間安定した品質のものとすることができる。As described above, the polarizing plate for plastic liquid crystal of the present invention has very little warpage, deformation, distortion, etc. due to changes in temperature and humidity, and it should be mounted and used on the front surface or the back surface of the plastic liquid crystal cell. As a result, it is possible to obtain stable quality for a long time without warping or deformation.
【図１】（Ａ）は本発明の１実施例を示すプラスチック
液晶用偏光板の断面図、（Ｂ）〜（Ｄ）はそれぞれ
（Ａ）の透明フィルム基板４に表面加工したものの断面
図である。FIG. 1A is a sectional view of a polarizing plate for plastic liquid crystal showing one embodiment of the present invention, and FIGS. 1B to 1D are sectional views of the transparent film substrate 4 of FIG. is there.
【図２】本発明のプラスチック液晶用偏光板を適用した
プラスチック液晶表示体の断面図である。FIG. 2 is a cross-sectional view of a plastic liquid crystal display body to which the plastic liquid crystal polarizing plate of the invention is applied.
【図３】（Ａ）は本発明のプラスチック液晶用偏光板を
適用した他のプラスチック液晶表示体の断面図、（Ｂ）
は（Ａ）の反射板付偏光板の断面図である。FIG. 3A is a sectional view of another plastic liquid crystal display body to which the polarizing plate for plastic liquid crystal of the present invention is applied, and FIG.
FIG. 3A is a cross-sectional view of the polarizing plate with a reflection plate of (A).
ａ プラスチック液晶セル用偏光板 ｂ 半透過板付プラスチック液晶セル用偏光板 １ 偏光素子 ２ 偏光基板 ３，３′ 粘着剤（層） ４ 透明フィルム基板 ６ 離型フィルム ７ 粘着付偏光板 ８ プラスチックセル基板 ９ 半透過板（反射板） １０ 液晶層 １１ シール剤 １２ プラスチック液晶セル １３ ハードコート皮膜層 １３′ アンチグレアハードコート層 １４ ＡＲコート層 a Plastic liquid crystal cell polarizing plate b Semi-transparent plate plastic liquid crystal cell polarizing plate 1 Polarizing element 2 Polarizing substrate 3, 3'Adhesive (layer) 4 Transparent film substrate 6 Release film 7 Adhesive polarizing plate 8 Plastic cell substrate 9 Semi-transmissive plate (reflector) 10 Liquid crystal layer 11 Sealant 12 Plastic liquid crystal cell 13 Hard coat film layer 13 'Anti-glare hard coat layer 14 AR coat layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平松 満雄 栃木県下都賀郡藤岡町大字甲248 株式会 社サンリッツ内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuo Hiramatsu 248, Oza, Fujioka-cho, Shimotsuga-gun, Tochigi Prefecture
Claims (4)
使用される偏光板の片面に、光学的透明性の高いプラス
チックフィルム基板を積層一体化した構造を有すること
を特徴とするプラスチック液晶セル用偏光板。1. A polarizing plate for a plastic liquid crystal cell, which has a structure in which a plastic film substrate having high optical transparency is laminated and integrated on one surface of a polarizing plate used for the front surface or the back surface of the plastic liquid crystal cell. .
明基板の表面にハードコート層を形成したことを特徴と
する請求項１に記載のプラスチック液晶セル用偏光板。2. The polarizing plate for plastic liquid crystal cells according to claim 1, wherein a hard coat layer is formed on the surface of the transparent substrate of the polarizing plate for plastic liquid crystal cells.
明フィルム基板の表面に、アンチグレア、アンチグレア
ハードコート層等の反射防止層が形成されていることを
特徴とする請求項１に記載のプラスチック液晶セル用偏
光板。3. The plastic liquid crystal cell according to claim 1, wherein an antireflection layer such as an antiglare or antiglare hard coat layer is formed on the surface of the transparent film substrate of the polarizing plate for a plastic liquid crystal cell. Polarizing plate.
ードコート層または反射防止層の表面に、さらにＡＲコ
ート層が形成されていることを特徴とする請求項１，２
または３に記載のプラスチック液晶セル用偏光板。4. The AR coat layer is further formed on the surface of the transparent plastic film substrate, the hard coat layer or the antireflection layer.
Alternatively, the polarizing plate for a plastic liquid crystal cell as described in 3 above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6189749A JPH0854620A (en) | 1994-08-12 | 1994-08-12 | Polarizing plate for plastic liquid crystal cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6189749A JPH0854620A (en) | 1994-08-12 | 1994-08-12 | Polarizing plate for plastic liquid crystal cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0854620A true JPH0854620A (en) | 1996-02-27 |
Family
ID=16246544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6189749A Pending JPH0854620A (en) | 1994-08-12 | 1994-08-12 | Polarizing plate for plastic liquid crystal cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0854620A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100400845B1 (en) * | 2000-02-23 | 2003-10-08 | 샤프 가부시키가이샤 | Liquid Crystal Display Device |
| US6791656B2 (en) | 1999-09-29 | 2004-09-14 | Nec Lcd Technologies, Ltd. | Liquid crystal display panel avoiding display unevenness and manufacturing method |
| JP2006039024A (en) * | 2004-07-23 | 2006-02-09 | Konica Minolta Opto Inc | Polarizing plate for liquid crystal display device and liquid crystal display device |
| JP2008310348A (en) * | 2000-10-27 | 2008-12-25 | Three M Innovative Properties Co | Method and material for preventing warping in optical film |
-
1994
- 1994-08-12 JP JP6189749A patent/JPH0854620A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6791656B2 (en) | 1999-09-29 | 2004-09-14 | Nec Lcd Technologies, Ltd. | Liquid crystal display panel avoiding display unevenness and manufacturing method |
| KR100400845B1 (en) * | 2000-02-23 | 2003-10-08 | 샤프 가부시키가이샤 | Liquid Crystal Display Device |
| US6639645B2 (en) | 2000-02-23 | 2003-10-28 | Sharp Kabushiki Kaisha | Warp resistant liquid crystal display device |
| JP2008310348A (en) * | 2000-10-27 | 2008-12-25 | Three M Innovative Properties Co | Method and material for preventing warping in optical film |
| JP2006039024A (en) * | 2004-07-23 | 2006-02-09 | Konica Minolta Opto Inc | Polarizing plate for liquid crystal display device and liquid crystal display device |
| JP4639682B2 (en) * | 2004-07-23 | 2011-02-23 | コニカミノルタオプト株式会社 | Polarizing plate for liquid crystal display device and liquid crystal display device |
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