JP2009015273A - Production of polarizing plate - Google Patents
Production of polarizing plate Download PDFInfo
- Publication number
- JP2009015273A JP2009015273A JP2007202333A JP2007202333A JP2009015273A JP 2009015273 A JP2009015273 A JP 2009015273A JP 2007202333 A JP2007202333 A JP 2007202333A JP 2007202333 A JP2007202333 A JP 2007202333A JP 2009015273 A JP2009015273 A JP 2009015273A
- Authority
- JP
- Japan
- Prior art keywords
- polarizing plate
- resin film
- heat treatment
- plate according
- production
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 239000011347 resin Substances 0.000 claims abstract description 35
- 229920005989 resin Polymers 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 17
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 230000009477 glass transition Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 abstract 1
- 239000004973 liquid crystal related substance Substances 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
Images
Landscapes
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
Description
偏光板製造においての偏光子の両面に保護フィルム等を接着剤で貼合する直前に熱処理をする技術に関する。 The present invention relates to a technique in which heat treatment is performed immediately before a protective film or the like is bonded to both surfaces of a polarizer in manufacturing a polarizing plate with an adhesive.
樹脂フィルム等に使用される加熱方法には従来、様々な手段が使用されている。例えば、
(1)熱ロール本体にカートリッジ型ヒーターを内設し、加熱ロールを加熱する方法。
(2)加熱ロール本体にシーズヒーターを内設し、加熱ロールを加熱する方法。
や特開平3−071811号のように、様々なより工夫された技術の開示もある。
(1) A method in which a cartridge-type heater is installed in the heat roll body and the heating roll is heated.
(2) A method in which a sheathed heater is installed in the heating roll body and the heating roll is heated.
There are also disclosures of various more devised techniques such as JP-A-3-071811.
しかしながら上記の方法では加熱ロール本体内において温度調節機のONまたはOFE状態により一定の温度をローラー表面に保つことが困難な欠点があったし、設定加熱温度のばらつきがないように保たなくてはならない製造過程では限界があった。 However, in the above method, there is a drawback that it is difficult to maintain a constant temperature on the roller surface in the main body of the heating roll due to the ON or OFE state of the temperature controller, and it is not possible to maintain a variation in the set heating temperature. There was a limit in the manufacturing process that should not be.
つまり、本発明者らが課題としたのは単なる従来のフィルム加熱処理方法でなくして、偏光板製造時における偏光子の両面に保護フィルム等の貼合時において外観損失をなくする解決手段を研究していた。 In other words, the present inventors studied not only a conventional film heat treatment method, but a solution for eliminating appearance loss when bonding a protective film or the like on both sides of a polarizer during polarizing plate production. Was.
樹脂フィルムにほんのわずかなヘコミ、クニック、耳伸び、耳つまり等の外観損傷を有していると、偏光子の両面に樹脂フィルムを貼合する際にカール、クニック、スジ状の変形といった外観欠損が発生する場合があり、最近の大型液晶画面での歩留まりが悪化する一つの要因となっていた。 If the resin film has slight appearance damage such as dents, nicks, ear extension, and ear clogging, the appearance loss such as curl, nick, and streak deformation may occur when the resin film is bonded to both sides of the polarizer. May occur, which has been one factor that deteriorates the yield of recent large LCD screens.
前記外観損傷の原因のひとつがフィルムの接着工程前に鹸化処理をおこなうとブロッキング(接着跡に伴う外観変形)やスジ状の変形やクニックが発生する場合がある。 If one of the causes of the appearance damage is saponification before the film adhesion process, blocking (appearance deformation accompanying adhesion marks), streak-like deformation, and nick may occur.
その他の外観損傷の原因としてはフィルムをロール状態のままに長期間保存するときに発生するブロッキングや陥没等の外観損傷が大きな要因である。 As other causes of appearance damage, appearance damage such as blocking and depression generated when the film is stored for a long time in a roll state is a major factor.
その結果、研究者らは創意工夫を重ねた結果、課題解決手段として偏光子と保護フィルム等の樹脂フィルムを貼り合せてなる偏光板の製造において、前記偏光子と前記樹脂フィルムを接着剤をもちいて貼り合せる直前に、少なくとも前記樹脂フィルムに精密温度制御された温熱冷熱を徐々に加えた熱処理及び徐々に冷却していく冷却処理を設けて行う工程を加えることで課題を解決できることを見出した。 As a result, as a result of repeated ingenuity, researchers have used an adhesive for the polarizer and the resin film in the manufacture of a polarizing plate formed by laminating a polarizer and a resin film such as a protective film as a means for solving problems. The present inventors have found that the problem can be solved by adding a process of providing a heat treatment that gradually adds hot / cold heat controlled with precision temperature to the resin film and a cooling process that gradually cools the resin film immediately before bonding.
フィルムを接着前に鹸化処理をするとフィルム面に小さな障害要因、スジ状の変形や目視できないほどのチジミや接着に起因する外観変形等が生じるのが、フィルム面上に徐々に温熱処理を加えた後に徐々に冷却することで解決した。When the film is saponified before bonding, small hindrance factors, streak-like deformations, invisible blurring, and external deformation due to adhesion, etc., are caused by gradually heating the film surface. It was solved by gradually cooling later.
また、フィルムをロール状態のままに長期保存するとブロッキングや陥没等が発生し外観損層の大きな要因となっていたことも、前記の過熱及び冷却で解決できた。 Moreover, when the film was stored for a long time in a roll state, blocking, depression, and the like were generated, which was a major factor in the appearance loss layer.
前記の外観損傷を有しているフィルムは温熱処理及び冷却処理を加えることで均一面の復元がおこると考えられる。 It is considered that the film having the above-mentioned appearance damage is restored by uniform heat treatment and cooling treatment.
前記をふまえて、なお詳しい工程手段としてはポリビニルアルコール系樹脂(PVA)をよう素染色したフィルムを連続的に延伸して偏光子に加工し、得られた該偏光子に前記樹脂フィルムの両面または片面を遠赤外線ヒーター及び加熱連続ローラーにて温熱処理をほどこし、その直後から徐々に冷却のための冷熱処理を徐々にする工程を経ながら、フィルムを搬送させ、直ちに偏光子と前記樹脂フィルムを接着剤で貼り合わせることを特徴とする。 Based on the above, as a more detailed process means, a film obtained by iodine-staining polyvinyl alcohol resin (PVA) is continuously stretched and processed into a polarizer, and the obtained polarizer is subjected to both sides of the resin film or One side is subjected to thermal heat treatment with a far infrared heater and continuous heating roller, and immediately after that, the film is transported through a process of gradually cooling and heat treatment for cooling, and the polarizer and the resin film are immediately bonded. It is characterized by being bonded with an agent.
特に3〜1000マイクロメートルの波長帯を遠赤外線は吸収効率が高く、フィルムに当たると吸収されて分子や結晶を振動させ、熱エネルギーに変えるので復元作用が顕著に現れると考えられることと、特に高分子化合物は、遠赤外線波長域の赤外線をよく吸収することは周知されている。 In particular, far-infrared rays have a high absorption efficiency in the wavelength range of 3 to 1000 micrometers, and when they hit the film, they are absorbed and vibrate molecules and crystals and change to thermal energy. It is well known that molecular compounds well absorb infrared rays in the far-infrared wavelength region.
詳しくは前記樹脂フィルムがセルロースエステルであるが、COC(Cyclo−olefin Copolymer)もしくはCOP(Cyclo−olefin Polymer)のフィルムも貼り合せフィルムとして使用される。 Specifically, the resin film is a cellulose ester, but a film of COC (Cyclo-olefin Polymer) or COP (Cyclo-olefin Polymer) is also used as a laminated film.
前記熱処理の条件は膜面温度が50℃〜Tg(ガラス転移点温度)以下であり、より詳しくは60℃〜100℃の範囲であり、さらに温度が70℃〜90℃の範囲であることが最適である。 The heat treatment condition is that the film surface temperature is 50 ° C. to Tg (glass transition temperature) or less, more specifically 60 ° C. to 100 ° C., and the temperature is 70 ° C. to 90 ° C. Is optimal.
前記熱処理方法は横幅方向に少なくとも3面以上の遠赤外線ヒーターパネルを設け、各パネル自体が温度調節機能を有する。 In the heat treatment method, at least three or more far infrared heater panels are provided in the width direction, and each panel itself has a temperature control function.
前記熱処理方法は長尺方向に少なくとも3面以上の遠赤外線ヒーターパネルを設け、各パネル自体が温度調節機能を有する。 In the heat treatment method, at least three or more far infrared heater panels are provided in the longitudinal direction, and each panel itself has a temperature control function.
よって、遠赤外線パネルは合計で9面以上である。 Therefore, the far-infrared panel has nine or more faces in total.
前記熱処理手段がヒートロール法でありローラー数は10本以上近接配列され、フィルムを徐々に加熱し一定加熱温度に達したローラー箇所より徐々に複数冷却ローラーにて冷却していく、ローラー郡に樹脂フィルム等が搬送されていく工程を特徴とする。 The heat treatment method is a heat roll method, and the number of rollers is close to 10 or more, and the film is gradually heated and cooled by a plurality of cooling rollers from a roller portion that reaches a certain heating temperature. It is characterized by a process in which films and the like are conveyed.
前記温冷熱処理温度制御方法は比例制御もしくはPID(Proportional Integral Derivative)制御である。 The temperature-cooling heat treatment temperature control method is proportional control or PID (Proportional Integral Derivative) control.
その結果、本発明は樹脂フィルムの外観損傷等の改良方法を具現化した装置を用いた結果、従来、偏光板上に生じた外観損傷を大幅に低減できるようになり、歩留まりが向上した。 As a result, according to the present invention, as a result of using an apparatus that embodies an improved method such as appearance damage of the resin film, the appearance damage that has conventionally occurred on the polarizing plate can be greatly reduced, and the yield is improved.
図1の偏光子1と保護フィルム等の樹脂フィルム2とからなる偏光板6の製造において、前記偏光子と前記樹脂フィルムを接着剤5をもちいて貼り合せる直前に、少なくとも前記樹脂フィルムに精密温度制御された遠赤外線ヒーターによる熱処理3の工程を経て偏光板を製造することが最良の形態である。 In the manufacture of the polarizing plate 6 comprising the polarizer 1 of FIG. 1 and the
図2の加熱ローラー及び冷却ローラーは各ローラー群は20配列とし、加熱ローラーの直径は10〜15cmで、可能な限りとなりのローラーと近接するように配置し、冷却ローラーの直径は9〜15cmで、可能な限りとなりのローラーと近接させることが望ましい。 The heating roller and the cooling roller in FIG. 2 are each arranged in 20 groups, the heating roller has a diameter of 10 to 15 cm, and is arranged as close to the roller as possible, and the cooling roller has a diameter of 9 to 15 cm. It is desirable to be as close as possible to the next roller.
ロール状の樹脂フィルム供給搬送側に加熱ローラー群を設置し、その過熱ローラー群上に遠赤外線パネルヒーターを設置し、次いで搬送進行方向に冷却ローラー群を設置し、冷却ロール群上部に冷風送風用の冷風ダクトを備え、加熱ローラー群のエリアと冷却ローラー群のエリアは樹脂フィルムが搬送可能な隙間が開口された状態で、温度遮蔽間仕切りカーテンで仕切られ、各ポイント数箇所に温度センサーでフィルムの温度を感知し温度調節機で感知箇所周辺の遠赤外線ヒーターパネル及び加熱冷却温度を適宜に設定温度に制御する方法が最良の形態である。 A heating roller group is installed on the roll-shaped resin film supply and conveyance side, a far-infrared panel heater is installed on the superheated roller group, then a cooling roller group is installed in the direction of conveyance, and cold air is blown above the cooling roll group The area of the heating roller group and the area of the cooling roller group are partitioned by a temperature-shielding partition curtain with a gap through which the resin film can be transported. The best mode is a method in which the temperature is sensed and the far-infrared heater panel and the heating / cooling temperature around the sensing point are appropriately controlled to the set temperature by the temperature controller.
1.偏光子
2.樹脂フィルム
3.熱処理装置
4.ロール圧着装置
5.接着剤
6.偏光板
7.樹脂フィルムロール
8.遠赤外線ヒーターパネル
9.温度センサー
10.加熱ローラー郡
11.冷却ローラー郡
12.温度遮蔽間仕切りカーテン
13.冷風ダクト1. 1. Polarizer 2. Resin film 3. Heat treatment apparatus 4. Roll crimping device Adhesive 6.
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007202333A JP5393961B2 (en) | 2007-07-06 | 2007-07-06 | Manufacturing method of polarizing plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007202333A JP5393961B2 (en) | 2007-07-06 | 2007-07-06 | Manufacturing method of polarizing plate |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2009015273A true JP2009015273A (en) | 2009-01-22 |
JP2009015273A5 JP2009015273A5 (en) | 2010-09-02 |
JP5393961B2 JP5393961B2 (en) | 2014-01-22 |
Family
ID=40356185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007202333A Active JP5393961B2 (en) | 2007-07-06 | 2007-07-06 | Manufacturing method of polarizing plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5393961B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103246001A (en) * | 2012-02-09 | 2013-08-14 | 日东电工株式会社 | Method for producing waterproof organic thin film |
WO2013146965A1 (en) * | 2012-03-29 | 2013-10-03 | 住友化学株式会社 | Manufacturing method for polarizing plate |
WO2013147110A1 (en) * | 2012-03-29 | 2013-10-03 | 住友化学株式会社 | Method for manufacturing polarizing plate |
WO2013183781A1 (en) * | 2012-06-08 | 2013-12-12 | 住友化学株式会社 | Process for producing polarizing plate |
JP2015168158A (en) * | 2014-03-07 | 2015-09-28 | トヨタ自動車株式会社 | Method of manufacturing thin film laminate |
JP2017120440A (en) * | 2017-03-03 | 2017-07-06 | 住友化学株式会社 | Method for manufacturing polarizing plate |
JP2019105865A (en) * | 2019-04-03 | 2019-06-27 | 住友化学株式会社 | Method for manufacturing polarizing plate |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61192526A (en) * | 1985-02-20 | 1986-08-27 | Mitsubishi Monsanto Chem Co | Heating of thermoplastic resin thin sheet |
JPH08142209A (en) | 1994-11-18 | 1996-06-04 | Fuji Photo Film Co Ltd | Improvement of flatness of thermoplastic film |
JPH1068821A (en) * | 1996-08-26 | 1998-03-10 | Nippon Synthetic Chem Ind Co Ltd:The | Production of polarizing plate |
JP2000319412A (en) * | 1999-05-07 | 2000-11-21 | Konica Corp | Preparation of cellulose ester film, apparatus for preparing the same and cellulose ester film for liquid crystal image display device |
JP2001315147A (en) * | 2000-05-10 | 2001-11-13 | Konica Corp | Producing method for cellulose ester film |
JP2002131549A (en) | 2000-08-15 | 2002-05-09 | Fuji Photo Film Co Ltd | Optical compensating sheet, method for producing the same, polarizing plate and liquid crystal display |
JP2002194107A (en) | 2000-12-22 | 2002-07-10 | Fuji Photo Film Co Ltd | Optical film |
JP2002303727A (en) * | 2001-04-06 | 2002-10-18 | Nitto Denko Corp | Method for manufacturing polarizing film |
JP2003055477A (en) * | 2001-08-15 | 2003-02-26 | Fuji Photo Film Co Ltd | Cellulose acetate film, optical compensation sheet, polarizing plate and liquid crystal display device |
JP2003334832A (en) | 2002-03-12 | 2003-11-25 | Fuji Photo Film Co Ltd | Method for manufacturing cellulose film, cellulose film, polarizing plate protective film, optical functional film, polarizing plate and liquid crystal display unit |
JP2006169510A (en) | 2004-11-16 | 2006-06-29 | Fuji Photo Film Co Ltd | Optical film, polarizing plate and method for forming optical film |
JP2006251224A (en) * | 2005-03-09 | 2006-09-21 | Fuji Photo Film Co Ltd | Method for manufacturing polarizing plate |
JP2007003766A (en) | 2005-06-23 | 2007-01-11 | Konica Minolta Opto Inc | Optical film, manufacturing method of optical film, polarizing plate and display device |
JP2007047537A (en) * | 2005-08-11 | 2007-02-22 | Konica Minolta Opto Inc | Polarizing plate and liquid crystal display |
-
2007
- 2007-07-06 JP JP2007202333A patent/JP5393961B2/en active Active
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61192526A (en) * | 1985-02-20 | 1986-08-27 | Mitsubishi Monsanto Chem Co | Heating of thermoplastic resin thin sheet |
JPH08142209A (en) | 1994-11-18 | 1996-06-04 | Fuji Photo Film Co Ltd | Improvement of flatness of thermoplastic film |
JPH1068821A (en) * | 1996-08-26 | 1998-03-10 | Nippon Synthetic Chem Ind Co Ltd:The | Production of polarizing plate |
JP2000319412A (en) * | 1999-05-07 | 2000-11-21 | Konica Corp | Preparation of cellulose ester film, apparatus for preparing the same and cellulose ester film for liquid crystal image display device |
JP2001315147A (en) * | 2000-05-10 | 2001-11-13 | Konica Corp | Producing method for cellulose ester film |
JP2002131549A (en) | 2000-08-15 | 2002-05-09 | Fuji Photo Film Co Ltd | Optical compensating sheet, method for producing the same, polarizing plate and liquid crystal display |
JP2002194107A (en) | 2000-12-22 | 2002-07-10 | Fuji Photo Film Co Ltd | Optical film |
JP2002303727A (en) * | 2001-04-06 | 2002-10-18 | Nitto Denko Corp | Method for manufacturing polarizing film |
JP2003055477A (en) * | 2001-08-15 | 2003-02-26 | Fuji Photo Film Co Ltd | Cellulose acetate film, optical compensation sheet, polarizing plate and liquid crystal display device |
JP2003334832A (en) | 2002-03-12 | 2003-11-25 | Fuji Photo Film Co Ltd | Method for manufacturing cellulose film, cellulose film, polarizing plate protective film, optical functional film, polarizing plate and liquid crystal display unit |
JP2006169510A (en) | 2004-11-16 | 2006-06-29 | Fuji Photo Film Co Ltd | Optical film, polarizing plate and method for forming optical film |
JP2006251224A (en) * | 2005-03-09 | 2006-09-21 | Fuji Photo Film Co Ltd | Method for manufacturing polarizing plate |
JP2007003766A (en) | 2005-06-23 | 2007-01-11 | Konica Minolta Opto Inc | Optical film, manufacturing method of optical film, polarizing plate and display device |
JP2007047537A (en) * | 2005-08-11 | 2007-02-22 | Konica Minolta Opto Inc | Polarizing plate and liquid crystal display |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9156060B2 (en) | 2012-02-09 | 2015-10-13 | Nitto Denko Corporation | Method for producing waterproof organic thin film |
CN103246001A (en) * | 2012-02-09 | 2013-08-14 | 日东电工株式会社 | Method for producing waterproof organic thin film |
CN103246001B (en) * | 2012-02-09 | 2016-05-18 | 日东电工株式会社 | The manufacture method of water-resistant organic thin film |
WO2013146965A1 (en) * | 2012-03-29 | 2013-10-03 | 住友化学株式会社 | Manufacturing method for polarizing plate |
WO2013147110A1 (en) * | 2012-03-29 | 2013-10-03 | 住友化学株式会社 | Method for manufacturing polarizing plate |
WO2013183781A1 (en) * | 2012-06-08 | 2013-12-12 | 住友化学株式会社 | Process for producing polarizing plate |
KR20150028766A (en) * | 2012-06-08 | 2015-03-16 | 스미또모 가가꾸 가부시키가이샤 | Process for producing polarizing plate |
CN104335086A (en) * | 2012-06-08 | 2015-02-04 | 住友化学株式会社 | Process for producing polarizing plate |
JP2013254133A (en) * | 2012-06-08 | 2013-12-19 | Sumitomo Chemical Co Ltd | Method for manufacturing polarizing plate |
TWI617442B (en) * | 2012-06-08 | 2018-03-11 | 住友化學股份有限公司 | Method for manufacturing polarizing plate |
KR102094051B1 (en) * | 2012-06-08 | 2020-03-27 | 스미또모 가가꾸 가부시키가이샤 | Process for producing polarizing plate |
JP2015168158A (en) * | 2014-03-07 | 2015-09-28 | トヨタ自動車株式会社 | Method of manufacturing thin film laminate |
JP2017120440A (en) * | 2017-03-03 | 2017-07-06 | 住友化学株式会社 | Method for manufacturing polarizing plate |
JP2019105865A (en) * | 2019-04-03 | 2019-06-27 | 住友化学株式会社 | Method for manufacturing polarizing plate |
Also Published As
Publication number | Publication date |
---|---|
JP5393961B2 (en) | 2014-01-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2009015273A (en) | Production of polarizing plate | |
JP5235469B2 (en) | Drying apparatus and optical film manufacturing method | |
JP2009015273A5 (en) | ||
CN101091127B (en) | Polyvinyl alcohol film, and polarizing film and polarizing plate using the same | |
CN105739001A (en) | Polarizing plate | |
CN104139519B (en) | Knurling device and method and film roll manufacture method | |
JP2007226035A (en) | Method for manufacturing polarizer, polarizer, polarizing plate, optical film, image display device and cleaning device | |
JP6542215B2 (en) | Method and apparatus for producing a composite material | |
TWI554792B (en) | A manufacturing apparatus for a polarizing plate, a method for manufacturing a polarizing plate, a polarizing plate, and a liquid crystal display device using the same | |
KR20160069479A (en) | Method for producing phase-difference film and method for producing laminated polarizing plate | |
JP2002326278A (en) | Method for producing oriented film, polarizing film, polarizing plate, and liquid crystal display | |
JP2012014001A (en) | Method for manufacturing polarizer, polarizer, polarizing plate, optical film and image display device | |
KR20150034610A (en) | Method and facility for producing stretched film | |
JP2014146035A (en) | Method for manufacturing polarizer, polarizer, polarizing plate, optical film and image display device | |
TW201000301A (en) | Method and device for manufacturing polarizing film | |
JP4593827B2 (en) | Polarizing film manufacturing method and manufacturing apparatus | |
JP2011098442A (en) | Method and apparatus for manufacturing optical film | |
CN104765182A (en) | Method for producing optical film | |
KR20210031544A (en) | Method for producing laminate | |
TW202110612A (en) | Plastic film for optical applications, polarizing plate, and image display device | |
US20150369964A1 (en) | Method for producing polarizing film | |
KR101618387B1 (en) | Optical film manufacturing method and optical film | |
WO2004078363A1 (en) | Method for drying coating film and optical film | |
TW200932499A (en) | Production line of light guide panels | |
JP2003311823A (en) | Orienting and fixing method for long stretched sheet |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100624 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20100624 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20110928 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20111011 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20111209 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120904 |
|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20120904 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120924 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20130312 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130604 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20130611 |
|
A912 | Re-examination (zenchi) completed and case transferred to appeal board |
Free format text: JAPANESE INTERMEDIATE CODE: A912 Effective date: 20130726 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130926 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20131016 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5393961 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |