JPH0273307A - Polarizing plate with antistatic film - Google Patents
Polarizing plate with antistatic filmInfo
- Publication number
- JPH0273307A JPH0273307A JP63226892A JP22689288A JPH0273307A JP H0273307 A JPH0273307 A JP H0273307A JP 63226892 A JP63226892 A JP 63226892A JP 22689288 A JP22689288 A JP 22689288A JP H0273307 A JPH0273307 A JP H0273307A
- Authority
- JP
- Japan
- Prior art keywords
- polarizing plate
- film
- adhesive material
- liquid crystal
- crystal display
- 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
- 239000000853 adhesive Substances 0.000 claims abstract description 27
- 230000001070 adhesive effect Effects 0.000 claims abstract description 27
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 abstract description 19
- 230000005684 electric field Effects 0.000 abstract description 7
- 239000002216 antistatic agent Substances 0.000 abstract description 5
- 230000001681 protective effect Effects 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000012467 final product Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Landscapes
- Polarising Elements (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は粘着材により液晶表示素子に貼着される偏光板
、特に、表面に帯電防止膜を備えた帯電防止膜付偏光板
に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a polarizing plate that is adhered to a liquid crystal display element using an adhesive, and particularly to a polarizing plate with an antistatic film that has an antistatic film on the surface. be.
ガラスセル等からなるＴＮ−ＦＥＭ（ツィステッドネマ
チック電界効果型）液晶表示素子や５ＴＮ（スーパーツ
ィステッドネマチック型）液晶表示素子には直線偏光板
が用いられており、この偏光板は、通常、粘着材により
液晶表示素子に貼り付けられる。Linear polarizing plates are used in TN-FEM (twisted nematic field effect type) liquid crystal display elements and 5TN (super twisted nematic type) liquid crystal display elements made of glass cells, etc., and these polarizing plates are usually made of adhesive. It is attached to the liquid crystal display element using a material.
第３図には、片面に粘着材が付着された従来の直線偏光
板が示されている。直線偏光板１の表面側には損傷や汚
染を防止するための保護フィルム２が設けられるととも
に、裏面側にはセパレータフィルム３により被覆された
粘着材４が付着されている。この直線偏光板１は、第４
図（ａ）に示すように、セパレータフィルム３を剥離し
た後、第４図（ｂ）のように、露出した粘着材４により
液晶表示素子５に貼着される。FIG. 3 shows a conventional linear polarizing plate having an adhesive attached to one side. A protective film 2 for preventing damage and contamination is provided on the front side of the linearly polarizing plate 1, and an adhesive material 4 covered with a separator film 3 is attached to the back side. This linear polarizing plate 1 has a fourth
After the separator film 3 is peeled off as shown in FIG. 4(a), it is attached to the liquid crystal display element 5 using the exposed adhesive material 4 as shown in FIG. 4(b).
なお、最終製品に実装された後の直線偏光板１の表面の
損傷防止のため、第５図に示すように、直線偏光板１の
表面側にハードコート膜６をコーティングにより設けた
ものも知られている。In addition, in order to prevent damage to the surface of the linear polarizing plate 1 after it is mounted on a final product, there is also a known one in which a hard coat film 6 is provided on the surface side of the linear polarizing plate 1 by coating, as shown in FIG. It is being
〔発明が解決しようとする課題］
ところが、上記の直線偏光板１は、セパレータフィルム
３を剥離する際に発生する静電気により帯電し、この静
電気の影響で、粘着材４のセパレータフィルム３により
被覆されない側方への露出部位に付着していた繊維状の
異物や、空気中に浮遊しているちり状の異物等が露出し
た粘着材４に付着する場合があり、このように異物の付
着した粘着材４により直線偏光板１を液晶表示素子５に
貼り付けると、異物不良や気泡不良が生じる恐れがある
。[Problems to be Solved by the Invention] However, the above-mentioned linear polarizing plate 1 is charged by static electricity generated when the separator film 3 is peeled off, and due to the influence of this static electricity, it is not covered by the separator film 3 of the adhesive material 4. Fibrous foreign matter attached to the side exposed area or dust-like foreign matter floating in the air may adhere to the exposed adhesive material 4. If the linear polarizing plate 1 is attached to the liquid crystal display element 5 using the material 4, there is a risk that foreign matter defects or bubble defects may occur.
又、上記の静電気により液晶表示素子５の電極部位に帯
電が生じて、通常の印加電圧による電界以外の電界が液
晶表示素子５に加わり、帯電量のばらつきが生じて液晶
表示のコントラストにむらが生じる問題もあった。In addition, the electrostatic charge described above causes the electrode parts of the liquid crystal display element 5 to be charged, and an electric field other than the electric field due to the normal applied voltage is applied to the liquid crystal display element 5, causing variations in the amount of charge and uneven contrast of the liquid crystal display. There were also problems that arose.
本発明に係る帯電防止膜付偏光板は、上記の課題を解決
するために、剥離可能なセパレータフィルムにより被覆
された粘着材が付着され、上記セパレータフィルムを剥
離して粘着材を露出させ、露出した粘着材により液晶表
示素子に貼着するようにした偏光板において、上記偏光
板の表面に帯電防止膜が形成されていることを特徴とす
るものである。In order to solve the above-mentioned problems, the polarizing plate with an antistatic film according to the present invention has an adhesive coated with a removable separator film attached, and the separator film is peeled off to expose the adhesive material. The polarizing plate is attached to a liquid crystal display element using an adhesive material, and is characterized in that an antistatic film is formed on the surface of the polarizing plate.
上記の構成によれば、偏光板の表面に帯電防止膜が形成
されているので、セパレータフィルムの剥離時に発生す
る静電気の多くは空気中に放電し、偏光板自体の帯電量
は減少する。従って、繊維状の異物やちり状の異物に作
用する電界強度も小さくなるので、粘着材に付着する異
物も減少し、偏光板を液晶表示素子に貼着した際の異物
不良や気泡不良も生じにくくなる。又、セパレータフィ
ルムの剥離に伴う静電気により液晶表示素子の電極部位
に加わる電界の強度も僅かなものとなるので、液晶表示
のコントラストむらも生じにくくなる。According to the above configuration, since the antistatic film is formed on the surface of the polarizing plate, most of the static electricity generated when the separator film is peeled off is discharged into the air, and the amount of charge on the polarizing plate itself is reduced. Therefore, the electric field strength that acts on fibrous foreign matter and dust-like foreign matter is also reduced, which reduces the number of foreign matter that adheres to the adhesive material, which also reduces the possibility of foreign matter defects or air bubble defects when a polarizing plate is attached to a liquid crystal display element. It becomes difficult. Furthermore, the strength of the electric field applied to the electrode portions of the liquid crystal display element due to static electricity caused by peeling off the separator film becomes small, so that uneven contrast in the liquid crystal display is less likely to occur.
更に、上記帯電防止膜は液晶表示素子を最終製品に実装
した後の静電耐圧を向上させる作用も有するとともに、
帯電防止膜をアースすることにより、僅かではあるが、
電磁波シールド効果も期待できるものである。Furthermore, the antistatic film has the effect of improving the electrostatic withstand voltage after the liquid crystal display element is mounted on the final product, and
By grounding the antistatic film, the
Electromagnetic shielding effects can also be expected.
〔実施例１〕
本発明の第１実施例を第１図に基づいて説明すれば、以
下の通りである。[Example 1] The first example of the present invention will be described as follows based on FIG. 1.
第１図に示すように、偏光板としての直線偏光板１１の
表面には、適宜の帯電防止剤を、スプレー法、デイツプ
法又はロールコータ−法等によりコーティングすること
により帯電防止膜１２が形成されている。上記帯電防止
剤としては、界面活性剤を使用することもできるが、帯
電防止効果の持続性のより良好な材料として、シロキサ
ン系の帯電防止塗料、具体的には、例えば、コルコート
株式会社にて製造されているコルコー）Ｎ−１０３Ｘを
好適に使用することができる。上記帯電防止膜１２の表
面抵抗値は１０６〜１０１０Ω／口（但し、口は四角形
を意味し、四角形であれば寸法にかかわらず同一抵抗値
となる）程度に設定するのが好ましい。なお、帯電防止
膜１２の表面には保護フィルム１３が設けられる。As shown in FIG. 1, an antistatic film 12 is formed on the surface of a linear polarizing plate 11 as a polarizing plate by coating an appropriate antistatic agent by a spray method, a dip method, a roll coater method, etc. has been done. Although surfactants can be used as the antistatic agent, siloxane-based antistatic paints, such as those manufactured by Colcoat Co., Ltd. Corkor N-103X, which is currently manufactured, can be suitably used. It is preferable that the surface resistance value of the antistatic film 12 is set to about 10 6 to 10 10 Ω/portion (however, square means square, and if it is square, the resistance value is the same regardless of the size). Note that a protective film 13 is provided on the surface of the antistatic film 12.
直線偏光板１１の裏面側には粘着材１４が付着され、粘
着材１４は剥離可能なセパレータフィルム１５により被
覆されている。An adhesive material 14 is attached to the back side of the linear polarizing plate 11, and the adhesive material 14 is covered with a separable separator film 15.
上記の構成において、直線偏光板１１はセパレータフィ
ルム１５を剥離した状態で、露出した粘着材１４により
図示しない液晶表示素子に貼着される。In the above configuration, the linearly polarizing plate 11 is adhered to a liquid crystal display element (not shown) using the exposed adhesive material 14 with the separator film 15 peeled off.
ｒ実施例２〕 次に、第２図に基づいて、第２実施例を説明する。r Example 2] Next, a second embodiment will be described based on FIG.
第２実施例は、第１実施例における帯電防止膜１２の代
わりに、直線偏光板１１の表面に第１実施例と同様の帯
電防止剤を混合したハードコート剤をコーティングする
ことにより、帯電防止膜としての機能を兼務するハード
コート膜１６を形成したものである。なお、ハードコー
ト膜１６の表面硬度は鉛筆硬度で２Ｈ以上とし、又、ハ
ードコート膜１６の表面抵抗値は１０６〜１ｏ１２Ω／
ロ程度とするのが好ましい。In the second embodiment, instead of the antistatic film 12 in the first embodiment, the surface of the linear polarizing plate 11 is coated with a hard coat agent mixed with the same antistatic agent as in the first embodiment, thereby preventing static electricity. A hard coat film 16 is formed which also serves as a film. The surface hardness of the hard coat film 16 is 2H or more in terms of pencil hardness, and the surface resistance value of the hard coat film 16 is 106 to 1012Ω/
It is preferable to set it to about B.
上記のように、帯電防止剤を混入したハードコート膜１
６により直線偏光板１１を保護すると、直線偏光板１１
の表面の損傷が防止されるとともに、布等で清掃する際
にも静電気の発生が抑制される。As mentioned above, hard coat film 1 mixed with antistatic agent
When the linear polarizing plate 11 is protected by 6, the linear polarizing plate 11
In addition to preventing damage to the surface, generation of static electricity is also suppressed when cleaning with a cloth or the like.
本発明に係る帯電防止膜付偏光板は、以上のように、剥
離可能なセパレータフィルムにより被覆された粘着材が
付着され、上記セパレータフィルムを剥離して粘着材を
露出させ、露出した粘着材により液晶表示素子に貼着す
るようにした偏光板において、上記偏光板の表面に帯電
防止膜が形成されている構成である。As described above, the polarizing plate with an antistatic film according to the present invention has an adhesive coated with a releasable separator film attached, the separator film is peeled off to expose the adhesive, and the exposed adhesive In a polarizing plate that is attached to a liquid crystal display element, an antistatic film is formed on the surface of the polarizing plate.
これにより、偏光板の表面に帯電防止膜が形成されてい
るので、セパレータフィルムの剥離時に発生する静電気
の多くは空気中に放電し、偏光板自体の帯電量は減少す
る。従って、繊維状の異物やちり状の異物に作用する電
界強度も小さくなるので、粘着材に付着する異物も減少
し、偏光板を液晶表示素子に貼着した際の異物不良や気
泡不良も生しにくくなる。又、セパレータフィルムの剥
１＋
離に伴う静電気により液晶表示素子の□電極部位に加わ
る電界の強度も僅かなものとなるので、液晶表示のコン
ｌ−ラストむらも生じにくくなる。As a result, since an antistatic film is formed on the surface of the polarizing plate, most of the static electricity generated when the separator film is peeled off is discharged into the air, and the amount of charge on the polarizing plate itself is reduced. Therefore, the electric field strength that acts on fibrous foreign matter and dust-like foreign matter is also reduced, which reduces the amount of foreign matter that adheres to the adhesive material, and reduces foreign matter defects and bubble defects when the polarizing plate is attached to the liquid crystal display element. It becomes difficult to do. Furthermore, the strength of the electric field applied to the □ electrode portion of the liquid crystal display element due to static electricity caused by peeling off the separator film becomes small, so that contrast unevenness in the liquid crystal display is less likely to occur.
更に、上記帯電防止膜は液晶表示素子を最終製品に実装
した後の静電耐圧を向上させる効果も有するとともに、
帯電防止膜をアースすることにより、僅かではあるが、
電磁波シールド効果も期待できるものである。Furthermore, the antistatic film has the effect of improving the electrostatic withstand voltage after the liquid crystal display element is mounted on the final product, and
By grounding the antistatic film, the
Electromagnetic shielding effects can also be expected.
第１図は本発明の第１実施例に係る帯電防止膜付偏光板
の概略側面図、第２図は本発明の第２実施例に係る帯電
防止膜付偏光板の概略側面図、第３図は第１従来例に係
る偏光板の概略側面図、第４図（ａ）は第３図の偏光板
のセパレータフィルムを剥離する状態を示す概略側面図
、第４図（ｂ）は第３図の偏光板を液晶表示素子に貼着
した状態を示す概略側面図、第５図は第２従来例に係る
偏光板の概略側面図である。
１１は直線偏光板（偏光板）、１２は帯電防止膜、１４
は粘着材、１５はセパレータフィルム、１６はハードコ
ート膜（帯電防止膜）である。
第１図
男２図1 is a schematic side view of a polarizing plate with an antistatic film according to a first embodiment of the present invention, FIG. 2 is a schematic side view of a polarizing plate with an antistatic film according to a second embodiment of the present invention, and FIG. The figure is a schematic side view of a polarizing plate according to the first conventional example, FIG. 4(a) is a schematic side view showing a state in which the separator film of the polarizing plate of FIG. FIG. 5 is a schematic side view showing a state in which the polarizing plate shown in the figure is attached to a liquid crystal display element, and FIG. 5 is a schematic side view of a polarizing plate according to a second conventional example. 11 is a linear polarizing plate (polarizing plate), 12 is an antistatic film, 14
15 is an adhesive material, 15 is a separator film, and 16 is a hard coat film (antistatic film). Figure 1 Male Figure 2
Claims (1)
着材が付着され、上記セパレータフィルムを剥離して粘
着材を露出させ、露出した粘着材により液晶表示素子に
貼着するようにした偏光板において、 上記偏光板の表面に帯電防止膜が形成されていることを
特徴とする帯電防止膜付偏光板。[Claims] 1. An adhesive covered with a removable separator film is attached, the separator film is peeled off to expose the adhesive, and the exposed adhesive is used to adhere to the liquid crystal display element. A polarizing plate with an antistatic film, characterized in that an antistatic film is formed on the surface of the polarizing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63226892A JPH0273307A (en) | 1988-09-09 | 1988-09-09 | Polarizing plate with antistatic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63226892A JPH0273307A (en) | 1988-09-09 | 1988-09-09 | Polarizing plate with antistatic film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0273307A true JPH0273307A (en) | 1990-03-13 |
Family
ID=16852219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63226892A Pending JPH0273307A (en) | 1988-09-09 | 1988-09-09 | Polarizing plate with antistatic film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0273307A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04124601A (en) * | 1990-09-14 | 1992-04-24 | Nitto Denko Corp | Polarizing plate |
| JPH0651122A (en) * | 1992-07-29 | 1994-02-25 | Nitto Denko Corp | Polarizing plate, phase-difference plate and elliptical polarizing plate |
| WO2003008134A2 (en) * | 2001-07-16 | 2003-01-30 | Denki Kagaku Kogyo Kabushiki Kaisha | Surface protection film |
| JP2003121606A (en) * | 2001-08-07 | 2003-04-23 | Fuji Photo Film Co Ltd | Antireflection film, polarizing plate and image display device |
| JP2006011365A (en) * | 2004-05-26 | 2006-01-12 | Nitto Denko Corp | Adhesive optical member |
| KR100641765B1 (en) * | 1998-07-07 | 2006-11-02 | 코니카 미놀타 홀딩스 가부시키가이샤 | Polarizing Plate Unit |
| JP2008517306A (en) * | 2004-09-29 | 2008-05-22 | インダストリアル テクノロジー リサーチ インスティチュート | Antistatic layer for electrically modulated displays |
| US7413766B2 (en) | 2003-04-21 | 2008-08-19 | Nitto Denko Corporation | Antistatic optical film, method for manufacturing the same and image viewing display |
| US8445103B2 (en) | 2005-01-26 | 2013-05-21 | Nitto Denko Corporation | Adhesive composition, adhesive optical film and image display device |
| US8703297B2 (en) | 2004-10-21 | 2014-04-22 | Nitto Denko Corporation | Charge-preventing optical film, charge-preventing adhesive optical film, manufacturing method thereof, and image display device |
| US9188722B2 (en) | 2004-10-21 | 2015-11-17 | Nitto Denko Corporation | Antistatic adhesive optical film and image display |
| JP2016126347A (en) * | 2014-12-26 | 2016-07-11 | 住友化学株式会社 | Antistatic polarizing plate, antistatic polarizing plate with adhesive layer, and optical laminate |
-
1988
- 1988-09-09 JP JP63226892A patent/JPH0273307A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04124601A (en) * | 1990-09-14 | 1992-04-24 | Nitto Denko Corp | Polarizing plate |
| JPH0651122A (en) * | 1992-07-29 | 1994-02-25 | Nitto Denko Corp | Polarizing plate, phase-difference plate and elliptical polarizing plate |
| KR100641765B1 (en) * | 1998-07-07 | 2006-11-02 | 코니카 미놀타 홀딩스 가부시키가이샤 | Polarizing Plate Unit |
| US7084516B2 (en) | 2001-07-16 | 2006-08-01 | Denki Kagaku Kogyo Kabushiki Kaisha | Surface protection film |
| WO2003008134A2 (en) * | 2001-07-16 | 2003-01-30 | Denki Kagaku Kogyo Kabushiki Kaisha | Surface protection film |
| WO2003008134A3 (en) * | 2001-07-16 | 2003-10-30 | Denki Kagaku Kogyo Kk | Surface protection film |
| JP2003121606A (en) * | 2001-08-07 | 2003-04-23 | Fuji Photo Film Co Ltd | Antireflection film, polarizing plate and image display device |
| US7413766B2 (en) | 2003-04-21 | 2008-08-19 | Nitto Denko Corporation | Antistatic optical film, method for manufacturing the same and image viewing display |
| US8883251B2 (en) | 2003-04-21 | 2014-11-11 | Nitto Denko Corporation | Antistatic optical film, method for manufacturing the same and image viewing display |
| JP2006011365A (en) * | 2004-05-26 | 2006-01-12 | Nitto Denko Corp | Adhesive optical member |
| JP2008517306A (en) * | 2004-09-29 | 2008-05-22 | インダストリアル テクノロジー リサーチ インスティチュート | Antistatic layer for electrically modulated displays |
| US8703297B2 (en) | 2004-10-21 | 2014-04-22 | Nitto Denko Corporation | Charge-preventing optical film, charge-preventing adhesive optical film, manufacturing method thereof, and image display device |
| US9188722B2 (en) | 2004-10-21 | 2015-11-17 | Nitto Denko Corporation | Antistatic adhesive optical film and image display |
| US8445103B2 (en) | 2005-01-26 | 2013-05-21 | Nitto Denko Corporation | Adhesive composition, adhesive optical film and image display device |
| JP2016126347A (en) * | 2014-12-26 | 2016-07-11 | 住友化学株式会社 | Antistatic polarizing plate, antistatic polarizing plate with adhesive layer, and optical laminate |
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