JP3368524B2 - Polarizer - Google Patents
PolarizerInfo
- Publication number
- JP3368524B2 JP3368524B2 JP34932996A JP34932996A JP3368524B2 JP 3368524 B2 JP3368524 B2 JP 3368524B2 JP 34932996 A JP34932996 A JP 34932996A JP 34932996 A JP34932996 A JP 34932996A JP 3368524 B2 JP3368524 B2 JP 3368524B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- adhesive layer
- polarizing
- synthetic resin
- polarizing plate
- 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
- Laminated Bodies (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Description
【発明の詳細な説明】
【0001】
【発明の属する技術分野】本発明は液晶表示装置用の偏
光板に関する。
【0002】
【従来の技術】液晶表示装置は、表示パターンを可視化
するため、光の振動方向を制御する目的で上下に偏光板
を使用している。偏光板は偏光フィルムの両面を透明樹
脂フィルム、特に酢酸セルロース系のフィルムで積層し
た構成のものが一般的であり、これを液晶表示装置に粘
着剤で貼り合わせて使用されている。
【0003】一方、液晶表示装置は種々のところに使用
されるに伴って、薄肉化、軽量化が要望され、液晶表示
装置に使用される偏光板についても薄肉化、軽量化が要
望されている。
【0004】
【発明が解決しようとする課題】しかしながら、従来の
構成の偏光板では薄肉化、軽量化を追求するには限界が
ある。本来、ポリビニルアルコール系の偏光フィルムは
それ自体が偏光性能を有しているが力学的性質、光学的
耐久性に乏しいために保護層の付与は必須であるが、通
常両面にある保護層を片面に省略できれば非常に効果的
である。しかしながら、片面のみに保護層を有している
偏光板は、表裏の構成が非対称となるため、特に偏光フ
ィルムの配向方向の反りが非常に大きく、液晶表示装置
に貼合時等、実用上非常に問題となる。
【0005】
【課題を解決するための手段】本発明は、かかる事情に
鑑み、薄肉、軽量化と耐久性を両立させた偏光板を提供
することを目的とする。
【0006】すなわち本発明は、片側に粘着層を有する
合成樹脂フィルム(1)の粘着面に、透明合成樹脂フィ
ルムからなる保護層(2)を、その上に接着剤層(3)
を介して、ポリビニルアルコール系偏光フィルム
(4)、粘着剤層(5)、剥離フィルム(6)が順次積
層してなる偏光板である。以下、本発明を詳細に説明す
る。
【0007】
【発明の実施の形態】以下、図1および図2に基づいて
本発明を説明する。図1は本発明の偏光板の構成の断面
図である。(1)は片面粘着層付き合成樹脂フィルム、
(2)は透明合成樹脂フィルムからなる保護層、(3)
は接着剤層、(4)はポリビニルアルコール系偏光フィ
ルム、(5)は粘着剤層、(6)は剥離フィルムであ
る。本発明における偏光板はこれら(1)〜(6)を順
次積層して構成される。
【0008】片面粘着層付き合成樹脂フィルム(1)を
形成する合成樹脂としては、通常の偏光板に用いられる
用途、すなわち偏光板を液晶表示装置に貼り合わせたと
きに表面の傷付きを保護し、使用時には剥がされる目的
に加えて、本発明の偏光板において、その非対称に起因
する偏光フィルム側への偏光フィルムの配向方向の反り
を防止するために必須である。
【0009】材質としては、ポリエチレン系のものが最
も一般的である。ポリエチレンをベースに酢酸ビニルを
共重合して粘着性を付与させたポリマーやアクリル系の
粘着剤層を単層あるいは多層押出やインフレーション法
でフィルム化したものが好適に用いられる。他にはポリ
エステル系、ポリアミド系のフィルムに粘着加工したフ
ィルム等がある。粘着力は偏光板に対して1gf/25
mm以上のものが一般的に用いられる。
【0010】フィルム中の添加成分として、染料、顔
料、滑剤、酸化防止剤、紫外線吸収剤、タッキファイヤ
ー等を目的に応じて加えることが出来る。
【0011】偏光板の反りを抑えるために、貼合後ある
程度の残留収縮応力が必要であり、そのためには、引張
強度が500gf/10mm以上、引張伸度が100%
以上のフィルムを用い、そのフィルムを偏光フィルムの
保護層に貼り合わせる際に、フィルムの引張強度の0.
01〜0.5の張力を加えて、張力の方向が偏光フィル
ム(4)の配向方向と平行になるよう貼合する。0.0
1より小さいと元々の反りを矯正するには不足であり、
0.5を超えると合成樹脂フィルム(1)側の反りが大
きくなる。図2は、貼合する際の片面粘着層付き合成樹
脂フィルム(1)の張力の方向と偏光フィルム(4)の
配向方向を示す図である。
【0012】透明合成樹脂フィルム層(2)を形成する
合成樹脂としては、必要な透明性、強度、耐久性が満足
できるものであれば特に限定はないが、例えば、ポリエ
ステル、ポリカーボネート、ポリアリレート、ポリスル
ホン、ポリエーテルスルホン、ポリエーテルエーテルケ
トン、ポリメチルメタクリレート、ポリスチレン、ポリ
オレフィン、ポリ塩化ビニル、セルローストリアセテー
ト、セルロースジアセテート等が挙げられる。またその
厚みとしては、目的に応じて設定することができるが、
使用時の機械的強度が得られれば特に限定はされるもの
ではなく、一般的には5μm〜100μm程度である。
【0013】接着剤層(3)は透明合成樹脂フィルム層
(2)とポリビニルアルコール系偏光フィルム(4)と
の接着を受け持つ層である。目的とする接着性を有し、
かつ使用時の耐久性を満足するものであれば特に限定さ
れるものではない。例えば、ポリビニルアルコール系接
着剤等が挙げられる。
【0014】ポリビニルアルコール系偏光フィルム
(4)は、よう素、二色性染料をポリビニルアルコール
系フィルムに吸着配向させて偏光性能を持たしたフィル
ムであり、一般的に知られている既知の方法で製造され
る。
【0015】粘着剤層(5)は、実際に液晶表示装置と
貼合するための層であり、ポリビニルアルコール系偏光
フィルム(4)を侵さず、使用時に浮き、剥がれ等無
く、目的の粘着力、耐久性を有していれば特に限定され
るものではない。一般的にはアクリル系、シリコン系、
ゴム系、ウレタン系、エポキシ系などの粘着剤が用いら
れる。
【0016】剥離フィルム(6)は、偏光板を実際に液
晶表示装置と貼り合わせるときまで粘着剤層(5)を保
護し、貼合時に剥がして使用するものであり、行おうと
する貼合工程に合った剥離力を有していれば特に限定さ
れるものではない。例えば、ポリエステル系のベースフ
ィルムにシリコン系やフッ素系の離型剤層を有した構成
のものが一般的に用いられる。
【0017】
【発明の効果】本発明により、片面のみに保護層という
非対称構成ながら、貼合時までの反りが解消され、従来
の偏光板を用いたのと同等の耐久性、ハンドリング性を
有し、液晶表示装置に貼合した時に、より薄型とするこ
とができ、現在開発の進められている携帯電話、移動型
情報端末等の軽量薄肉化に非常に有用である。
【0018】
【実施例】以下、実施例により本発明をさらに詳細に説
明するが本発明はこれに限定されるものではない。な
お、評価方法は以下の通りである。
(1)引張強度、引張伸度:JIS−K−6781に準
拠し、引張試験機(島津オートグラフAGS−D)を用
いて測定した。
(2)光線透過率、偏光度:片面粘着付き合成樹脂フィ
ルム、剥離フィルムを剥がし、日本電子機械工業規格
(EIAJ)LD−201−1983に準拠し、分光光
度計(島津製作所製UV−2200)を用いて測定し
た。
(3)反り:偏光板を偏光フィルムの配向方向に垂直・
平行になるよう一辺100mmの正方形に切ったサンプ
ルを用意し、水平なところに静置して、JIS1級の鋼
尺で反りをmm単位まで測定した。その際、剥離フィル
ム(6)側を下面にしたときの上側への反りを+、反対
面を上面にしたときの上側への反りを−と表示した。
(4)耐久性:一辺28mmの正方形の偏光板を剥離フ
ィルム、片面粘着付き合成樹脂フィルムを剥がし、一辺
30mmの正方形、厚さ1mmのガラス板に貼り付け、
温度80℃の恒温槽に入れて500hr後における外観
変化観察、光線透過率、偏光度の測定を行い評価した。
【0019】参考例1
ポリビニルアルコール系偏光フィルム(4)の作製
厚さ80μmのケン化度99.7%のポリビニルアルコ
ールフィルムを一軸延伸(延伸倍率5倍)し、これを緊
張状態に保ったままよう素、よう化カリウム水溶液に浸
積し、次いでほう酸水溶液で処理、水洗、乾燥を行って
ポリビニルアルコール系偏光フィルム(4)を得た。
【0020】実施例1
参考例1で得た偏光フィルム(4)(厚み:18μm)
に、透明合成樹脂フィルム(2)として、厚さ80μm
のトリアセチルセルロースフィルム(富士TAC UV
80)を、接着剤(3)としてポリビニルアルコール
(クラレポバール217)の5重量%水溶液を用いて貼
合し、60℃で20分乾燥させた。このフィルムの偏光
フィルム側にアクリル系粘着剤(5)を厚さ25μmに
なるように塗布し、その上にシリコン系離型剤を塗布し
た厚さ25μmのPETフィルム(東レ ルミラー)
(6)を貼合した。透明樹脂フィルム側には、引張強度
627gf/10mm、引張伸び283%、厚さ60μ
mの片面粘着層付きポリエチレン系フィルム(積水プロ
テクトテープ622AX)(1)を引張試験機(島津オ
ートグラフAGS−D)に流れ方向にチャッキングし、
50gf/10mmの張力になるよう引張り、偏光フィ
ルムの配向方向と平行になるよう粘着面を貼合した。こ
のとき、ポリエチレン系フィルムに付加した張力は、ポ
リエチレン系フィルムの引張強度の0.08である。評
価結果を表1および表2に示す。
【0021】比較例1
片面粘着層付きポリエチレン系フィルム(1)を貼合し
なかった以外は実施例1と同様にして偏光板を作製し
た。評価結果を表1に示す。
【0022】比較例2
片面粘着層付きポリエチレン系フィルムを貼合する際の
付加する張力を5gf/10mmとした以外は実施例1
と同様にして偏光板を作製した。このとき、ポリエチレ
ン系フィルムに付加した張力は、ポリエチレン系フィル
ムの引張強度の0.008である。評価結果を表1に示
す。
【0023】比較例3
片面粘着層付きポリエチレン系フィルムを貼合する際の
付加する張力を400gf/10mmとした以外は実施
例1と同様にして偏光板を作製した。このとき、ポリエ
チレン系フィルムに付加した張力は、ポリエチレン系フ
ィルムの引張強度の0.638である。評価結果を表1
に示す。
【0024】比較例4
実施例1と同様の材料を用いたが、偏光フィルムの両面
に厚さ80μmのトリアセチルセルロースフィルム(富
士TAC UV80)を貼合し、片側にアクリル系粘着
剤を厚さ25μmになるように塗布し、その上にシリコ
ン系離型剤を塗布した厚さ25μmのPETフィルム
(東レルミラー)を貼合した。もう片側に、引張強度6
27gf/10mm、引張伸び283%、厚さ60μm
の片面粘着層付きポリエチレン系フィルム(積水プロテ
クトテープ622AX)を引張試験機(島津オートグラ
フAGS−D)に流れ方向にチャッキングし、50gf
/10mmの張力になるよう引張り、偏光フィルムの配
向方向と平行になるよう粘着面を貼合した。このとき,
ポリエチレン系フィルムに付加した張力はポリエチレン
系フィルムの引張強度の0.08である。評価結果を表
1および表2に示す。
【0025】
【表1】 *:液晶表示装置に貼合した時の偏光板由来の厚み(貼合する際に除く
合成樹脂フィルム(1)と剥離フィルム(6)を除いた値)
【0026】
【表2】
(光線透過率変化)=(初期光線透過率)−(試験後光線透過率)
(偏光度変化)=(初期偏光度)−(試験後偏光度)Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polarizing plate for a liquid crystal display. 2. Description of the Related Art In order to visualize a display pattern, a liquid crystal display device uses upper and lower polarizing plates for the purpose of controlling the vibration direction of light. The polarizing plate generally has a structure in which both surfaces of a polarizing film are laminated with a transparent resin film, particularly a cellulose acetate-based film, and the polarizing plate is used by being adhered to a liquid crystal display device with an adhesive. On the other hand, as the liquid crystal display device is used in various places, it is required to be thinner and lighter, and the polarizing plate used in the liquid crystal display device is also required to be thinner and lighter. . However, there is a limit in pursuing a thinner and lighter polarizing plate with a conventional configuration. Originally, a polyvinyl alcohol-based polarizing film itself has polarizing performance, but it is indispensable to provide a protective layer due to poor mechanical properties and optical durability. It is very effective if it can be omitted. However, since a polarizing plate having a protective layer on only one side has an asymmetrical structure on the front and back sides, the orientation direction of the polarizing film is particularly very warped. Is a problem. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a polarizing plate which achieves both thinness, light weight, and durability. That is, according to the present invention, a protective layer (2) made of a transparent synthetic resin film is provided on the adhesive surface of a synthetic resin film (1) having an adhesive layer on one side, and an adhesive layer (3) is provided thereon.
Is a polarizing plate in which a polyvinyl alcohol-based polarizing film (4), an adhesive layer (5), and a release film (6) are sequentially laminated through the film. Hereinafter, the present invention will be described in detail. The present invention will be described below with reference to FIG. 1 and FIG. FIG. 1 is a sectional view of the configuration of the polarizing plate of the present invention. (1) a synthetic resin film with a single-sided adhesive layer,
(2) is a protective layer made of a transparent synthetic resin film, (3)
Is an adhesive layer, (4) is a polyvinyl alcohol-based polarizing film, (5) is an adhesive layer, and (6) is a release film. The polarizing plate in the present invention is formed by sequentially laminating (1) to (6). The synthetic resin forming the synthetic resin film (1) with a single-sided adhesive layer is used for a usual polarizing plate, that is, for protecting the surface from being scratched when the polarizing plate is bonded to a liquid crystal display device. In addition to the purpose of being peeled off at the time of use, in the polarizing plate of the present invention, it is indispensable to prevent warping of the orientation direction of the polarizing film toward the polarizing film due to the asymmetry. The most common material is polyethylene. A polymer obtained by copolymerizing vinyl acetate with vinyl acetate based on polyethylene and imparting tackiness or an acrylic pressure-sensitive adhesive layer formed into a film by single-layer or multilayer extrusion or an inflation method is suitably used. Other examples include a film obtained by adhesively processing a polyester-based or polyamide-based film. Adhesive strength is 1 gf / 25 against the polarizing plate
mm or more is generally used. [0010] Dyes, pigments, lubricants, antioxidants, ultraviolet absorbers, tackifiers and the like can be added as additional components in the film according to the purpose. In order to suppress the warping of the polarizing plate, it is necessary to have a certain residual shrinkage stress after lamination. For this purpose, the tensile strength is 500 gf / 10 mm or more and the tensile elongation is 100%.
When the above film is used and the film is bonded to the protective layer of the polarizing film, the film has a tensile strength of 0.1%.
A tension of 01 to 0.5 is applied, and lamination is performed such that the direction of the tension is parallel to the orientation direction of the polarizing film (4). 0.0
If it is smaller than 1, it is not enough to correct the original warpage,
If it exceeds 0.5, the warpage on the synthetic resin film (1) side will increase. FIG. 2 is a diagram showing the direction of the tension of the synthetic resin film (1) with a single-sided adhesive layer and the orientation of the polarizing film (4) at the time of bonding. The synthetic resin forming the transparent synthetic resin film layer (2) is not particularly limited as long as the required transparency, strength and durability can be satisfied. Examples thereof include polyester, polycarbonate, polyarylate, and the like. Examples thereof include polysulfone, polyether sulfone, polyether ether ketone, polymethyl methacrylate, polystyrene, polyolefin, polyvinyl chloride, cellulose triacetate, and cellulose diacetate. The thickness can be set according to the purpose,
There is no particular limitation as long as the mechanical strength during use is obtained, and it is generally about 5 μm to 100 μm. The adhesive layer (3) is a layer responsible for bonding the transparent synthetic resin film layer (2) and the polyvinyl alcohol-based polarizing film (4). Has the desired adhesive properties,
There is no particular limitation as long as it satisfies the durability during use. For example, a polyvinyl alcohol-based adhesive may be used. The polyvinyl alcohol-based polarizing film (4) is a film having polarization performance by adsorbing and orienting iodine and a dichroic dye on the polyvinyl alcohol-based film, and is formed by a generally known method. Manufactured. The pressure-sensitive adhesive layer (5) is a layer for actually bonding to a liquid crystal display device, does not attack the polyvinyl alcohol-based polarizing film (4), does not float or peel off during use, and has a desired adhesive strength. There is no particular limitation as long as it has durability. In general, acrylic, silicon,
Adhesives such as rubber, urethane and epoxy are used. The peeling film (6) protects the pressure-sensitive adhesive layer (5) until the polarizing plate is actually bonded to the liquid crystal display device, and is used after being peeled off at the time of bonding. It is not particularly limited as long as it has a peeling force suitable for the above. For example, a structure in which a silicone-based or fluorine-based release agent layer is provided on a polyester-based base film is generally used. According to the present invention, the asymmetrical structure of the protective layer on only one side eliminates the warpage up to the time of bonding, and has the same durability and handling properties as those using a conventional polarizing plate. However, when it is attached to a liquid crystal display device, it can be made thinner, which is very useful for reducing the weight and thickness of mobile phones, mobile information terminals, and the like, which are currently being developed. Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited thereto. The evaluation method is as follows. (1) Tensile strength and tensile elongation: Measured using a tensile tester (Shimadzu Autograph AGS-D) according to JIS-K-6781. (2) Light transmittance and degree of polarization: The synthetic resin film with one-sided adhesive and the release film were peeled off, and the spectrophotometer (UV-2200 manufactured by Shimadzu Corporation) was used in accordance with the Japan Electronics Machinery Standards (EIAJ) LD-201-1983. It measured using. (3) Warp: The polarizing plate is perpendicular to the orientation of the polarizing film.
A sample cut into a square having a side of 100 mm was prepared so as to be parallel, and the sample was allowed to stand in a horizontal position, and the warpage was measured to the mm unit with a JIS Class 1 steel measure. At that time, the upward warpage when the release film (6) side was the lower surface was indicated by +, and the upward warpage when the opposite surface was the upper surface was indicated by-. (4) Durability: A square polarizing plate having a side of 28 mm is peeled off from a release film, and a synthetic resin film having one-sided adhesive is peeled off, and is adhered to a glass plate having a side of 30 mm and a thickness of 1 mm.
The sample was placed in a thermostat at a temperature of 80 ° C. and observed for change in appearance after 500 hours, and the light transmittance and the degree of polarization were measured and evaluated. Reference Example 1 Preparation of Polyvinyl Alcohol-Based Polarizing Film (4) A polyvinyl alcohol film having a thickness of 80 μm and a saponification degree of 99.7% was uniaxially stretched (stretching ratio: 5 times), and the tension was maintained. It was immersed in an aqueous solution of iodine and potassium iodide, then treated with an aqueous solution of boric acid, washed with water and dried to obtain a polyvinyl alcohol-based polarizing film (4). Example 1 The polarizing film (4) obtained in Reference Example 1 (thickness: 18 μm)
The transparent synthetic resin film (2) has a thickness of 80 μm.
Triacetyl cellulose film (Fuji TAC UV
80) was bonded using a 5% by weight aqueous solution of polyvinyl alcohol (Kuraray Povar 217) as an adhesive (3), and dried at 60 ° C. for 20 minutes. An acrylic pressure-sensitive adhesive (5) is applied to the polarizing film side of this film so as to have a thickness of 25 μm, and a silicone-based release agent is applied thereon, and a 25 μm-thick PET film (Toray Miller)
(6) was pasted. On the transparent resin film side, tensile strength 627 gf / 10 mm, tensile elongation 283%, thickness 60μ
m, a polyethylene film with a single-sided adhesive layer (Sekisui Protect Tape 622AX) (1) is chucked in a flow direction with a tensile tester (Shimadzu Autograph AGS-D),
The film was pulled so as to have a tension of 50 gf / 10 mm, and the adhesive surface was bonded so as to be parallel to the orientation direction of the polarizing film. At this time, the tension applied to the polyethylene film is 0.08 of the tensile strength of the polyethylene film. The evaluation results are shown in Tables 1 and 2. Comparative Example 1 A polarizing plate was produced in the same manner as in Example 1 except that the polyethylene film (1) having a single-sided adhesive layer was not bonded. Table 1 shows the evaluation results. Comparative Example 2 Example 1 was repeated except that the tension applied when laminating the polyethylene film having a single-sided adhesive layer was 5 gf / 10 mm.
A polarizing plate was produced in the same manner as described above. At this time, the tension applied to the polyethylene film is 0.008 of the tensile strength of the polyethylene film. Table 1 shows the evaluation results. Comparative Example 3 A polarizing plate was produced in the same manner as in Example 1 except that the tension applied when laminating the polyethylene film having a single-sided adhesive layer was 400 gf / 10 mm. At this time, the tension applied to the polyethylene film is 0.638, which is the tensile strength of the polyethylene film. Table 1 shows the evaluation results.
Shown in Comparative Example 4 The same material as in Example 1 was used, but an 80 μm-thick triacetyl cellulose film (Fuji TAC UV80) was attached to both sides of the polarizing film, and an acrylic adhesive was applied to one side. It was applied so as to have a thickness of 25 μm, and a 25 μm-thick PET film (Toray Miller Mill) coated with a silicone release agent was laminated thereon. On the other side, tensile strength 6
27 gf / 10 mm, tensile elongation 283%, thickness 60 μm
A polyethylene film (Sekisui Protect Tape 622AX) with an adhesive layer on one side is chucked in a flow direction with a tensile tester (Shimadzu Autograph AGS-D), and 50 gf
The film was pulled so as to have a tension of / 10 mm, and the pressure-sensitive adhesive surface was bonded so as to be parallel to the orientation direction of the polarizing film. At this time,
The tension applied to the polyethylene film is 0.08 of the tensile strength of the polyethylene film. The evaluation results are shown in Tables 1 and 2. [Table 1] *: Thickness derived from the polarizing plate when bonded to the liquid crystal display device (value excluding the synthetic resin film (1) and the release film (6), which are excluded when bonding). (Light transmittance change) = (Initial light transmittance)-(Light transmittance after test) (Polarization change) = (Initial polarization)-(Polarization after test)
【図面の簡単な説明】
【図1】本発明の偏光板の構成の断面図である。
【図2】貼合する際の片面粘着層付き合成樹脂フィルム
(1)の張力の方向と偏光フィルム(4)の配向方向を
示す図である。
【符号の説明】
(1) 片面粘着層付き合成樹脂フィルム
(2) 透明合成樹脂フィルムからなる保護層
(3) 接着剤層
(4) ポリビニルアルコール系偏光フィルム
(5) 粘着剤層
(6) 剥離フィルムBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a configuration of a polarizing plate of the present invention. FIG. 2 is a diagram showing a direction of tension of a synthetic resin film with a single-sided adhesive layer (1) and an orientation direction of a polarizing film (4) at the time of bonding. [Description of Signs] (1) Synthetic resin film with single-sided adhesive layer (2) Protective layer made of transparent synthetic resin film (3) Adhesive layer (4) Polyvinyl alcohol-based polarizing film (5) Adhesive layer (6) Peeling the 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 the front page (58) Field surveyed (Int.Cl. 7 , DB name) G02B 5/30
Claims (1)
(1)の粘着面に、透明合成樹脂フィルムからなる保護
層(2)を、その上に接着剤層(3)を介して、ポリビ
ニルアルコール系偏光フィルム(4)、粘着剤層
(5)、剥離フィルム(6)を順次積層してなる偏光板
であって、片側に粘着層を有する合成樹脂フィルム
(1)の引張強度が500gf/10mm以上、引張伸
度が100%以上であり、片側に粘着層を有する合成樹
脂フィルム(1)を偏光フィルム(4)の透明合成樹脂
フィルムからなる保護層(2)に貼合する際に、該合成
樹脂フィルム(1)にその引張強度の0.01〜0.5
の張力を付加し、その張力方向と偏光フィルム(4)の
配向方向が平行になるよう貼合してなる偏光板。 (57) Claims 1. A protective layer (2) made of a transparent synthetic resin film is provided on the adhesive surface of a synthetic resin film (1) having an adhesive layer on one side, and an adhesive layer is provided thereon. A polarizing plate obtained by sequentially laminating a polyvinyl alcohol-based polarizing film (4), an adhesive layer (5), and a release film (6) via (3)
A synthetic resin film having an adhesive layer on one side
(1) Tensile strength of 500 gf / 10 mm or more, tensile elongation
Synthetic tree with a degree of 100% or more and an adhesive layer on one side
Transparent synthetic resin for polarizing film (4)
When bonding to the protective layer (2) made of a film,
The resin film (1) has a tensile strength of 0.01 to 0.5.
Of the polarizing film (4)
A polarizing plate laminated so that the orientation directions are parallel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34932996A JP3368524B2 (en) | 1996-12-27 | 1996-12-27 | Polarizer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34932996A JP3368524B2 (en) | 1996-12-27 | 1996-12-27 | Polarizer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10186133A JPH10186133A (en) | 1998-07-14 |
JP3368524B2 true JP3368524B2 (en) | 2003-01-20 |
Family
ID=18403046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP34932996A Expired - Fee Related JP3368524B2 (en) | 1996-12-27 | 1996-12-27 | Polarizer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3368524B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101750789B (en) * | 2008-12-08 | 2014-12-24 | 日东电工株式会社 | Method for producing optical display device and winding-up roller for producing optical display device |
KR20150031441A (en) | 2012-10-02 | 2015-03-24 | 닛토덴코 가부시키가이샤 | Protection film and polarization plate provided with protection film |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4281261B2 (en) * | 2000-09-21 | 2009-06-17 | 住友化学株式会社 | Iodine polarizing plate and method for producing the same |
US6673425B1 (en) * | 2000-10-27 | 2004-01-06 | 3M Innovative Properties Company | Method and materials for preventing warping in optical films |
JP5382843B2 (en) * | 2007-10-31 | 2014-01-08 | 住友化学株式会社 | Manufacturing method of polarizing plate |
TW200951510A (en) * | 2007-11-30 | 2009-12-16 | Sumitomo Chemical Co | Polarizing plate having adhesive layer with high elastic modulus and image display device using the same |
JP5058953B2 (en) * | 2007-12-06 | 2012-10-24 | 日東電工株式会社 | Manufacturing method of optical display unit and roll material used therefor |
JP5105425B2 (en) * | 2008-01-31 | 2012-12-26 | 住友化学株式会社 | Manufacturing method of polarizing plate |
JP5500780B2 (en) * | 2008-04-03 | 2014-05-21 | 日東電工株式会社 | Adhesive polarizing plate, image display device, and manufacturing method thereof |
WO2011105805A2 (en) * | 2010-02-23 | 2011-09-01 | 주식회사 엘지화학 | Polarizing plate, method for fabricating same, and image display apparatus using same |
JP5750857B2 (en) * | 2010-10-04 | 2015-07-22 | 住友化学株式会社 | Optical laminate and method for producing the same |
CN106415341B (en) | 2014-05-30 | 2020-03-17 | 住友化学株式会社 | Adhesive-attached polarizing plate and liquid crystal display device |
JP2016122181A (en) | 2014-12-24 | 2016-07-07 | 住友化学株式会社 | Polarizing plate and liquid crystal display device |
JP7187764B2 (en) * | 2017-06-21 | 2022-12-13 | 東洋紡株式会社 | liquid crystal display |
JPWO2020170817A1 (en) * | 2019-02-20 | 2021-12-23 | 日東電工株式会社 | Laminate |
JP2023173794A (en) * | 2022-05-26 | 2023-12-07 | 日東電工株式会社 | Method of transporting film product |
-
1996
- 1996-12-27 JP JP34932996A patent/JP3368524B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101750789B (en) * | 2008-12-08 | 2014-12-24 | 日东电工株式会社 | Method for producing optical display device and winding-up roller for producing optical display device |
KR20150031441A (en) | 2012-10-02 | 2015-03-24 | 닛토덴코 가부시키가이샤 | Protection film and polarization plate provided with protection film |
Also Published As
Publication number | Publication date |
---|---|
JPH10186133A (en) | 1998-07-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3368524B2 (en) | Polarizer | |
JP6664866B2 (en) | Set of polarizing plate and front panel integrated liquid crystal display panel | |
KR101727871B1 (en) | Set of polarizing plates and front plate-integrated liquid crystal display panel | |
JP5332599B2 (en) | Polarizing plate, manufacturing method thereof, and composite polarizing plate using the same | |
JP5571953B2 (en) | Composite polarizing plate, laminated optical member, and image display device using them | |
JP5082480B2 (en) | Thin polarizing plate and image display device using the same | |
JP5932749B2 (en) | Polarizer set and front panel integrated liquid crystal display panel | |
JP2010262155A (en) | Composite polarizing plate | |
JP2001064607A (en) | Surface protective film | |
JP2017083857A (en) | Front plate integrated liquid crystal display panel | |
JP4489328B2 (en) | Optical member | |
JPH07294732A (en) | Polarizing plate and liquid crystal display device | |
JP3752013B2 (en) | Diffusion plate, laminated polarizing plate, elliptical polarizing plate, and liquid crystal display device | |
JP2002148436A (en) | Polarizing plate | |
JP2001108982A (en) | Surface protecting film, optical member and liquid crystal display device | |
KR20180081568A (en) | Polarizer and liquid crystal display | |
JPH10301105A (en) | Liquid crystal display polarizing plate and liquid crystal display device | |
JP2001194528A (en) | Polarizing plate | |
JP2001033776A (en) | Surface protective film | |
JP2005114995A (en) | Polarizing plate | |
JP2000081513A (en) | Optical member and liquid crystal display device | |
JPH09243824A (en) | Adhesive tape for surface protection and production of polarizing plate composite body | |
JP2001033624A (en) | Surface protective film | |
JPWO2014175462A1 (en) | Manufacturing method of polarizing plate | |
JP2002040259A (en) | Method for peeling optical member and peeling sheet used therefor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071115 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081115 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081115 Year of fee payment: 6 |
|
RD05 | Notification of revocation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: R3D05 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081115 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091115 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091115 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101115 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101115 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111115 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121115 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131115 Year of fee payment: 11 |
|
LAPS | Cancellation because of no payment of annual fees |