以下,對本發明之實施形態進行說明,但本發明並不限定於該等實施形態。 A.偏光膜之整體構成 圖1係本發明之一實施形態之偏光膜的俯視圖。圖2係本發明之一實施形態之偏光膜的剖視圖。如圖2所示,偏光膜10具有偏光元件1與形成於偏光元件1之一個面上之支持體2。偏光膜10可為單片狀,亦可為長條狀。偏光元件1代表性而言具有吸收軸。支持體2之厚度代表性而言為1 μm~15 μm,俯視下之支持體2之寬度代表性而言為500 μm~3000 μm。支持體2較佳為透明,更佳為透明並且實質上於光學上具有等向性。支持體2具有圖案結構,作為圖案結構,代表性而言具有圖1所示之蜂窩結構。支持體2含有俯視下與偏光元件1之吸收軸交叉之部分。具體而言,俯視下構成支持體2之蜂窩結構之六邊形之至少一條邊與偏光元件1之吸收軸交叉。更佳為沿著偏光元件1之吸收軸平行之方向,從單片狀之偏光膜10之一端之任意點至另一端為止,至少於一處與支持體2交叉。先前之偏光元件於產生裂紋之情形時,上述裂紋會以使偏光元件開裂之方式沿著偏光元件之吸收軸之方向行進。相對於此,本發明之偏光膜10具有支持體2,支持體2含有俯視下與偏光元件1之吸收軸交叉之部分,藉此支持體2會抑制偏光元件1之裂紋(裂縫)之行進。 圖3~圖6係本發明之另一實施形態之偏光膜的俯視圖。支持體可具有如圖3所示之框架結構,亦可具有如圖4所示之桁架結構,亦可具有如圖5所示之圓結構(將圓配置為矩陣狀之結構),亦可具有如圖6所示之條狀結構。如此,於偏光元件1之表面形成圖案狀之支持體2之情形時,與於偏光元件1之整個表面形成支持體之情形相比,可減少構成支持體之材料之使用量。 圖7係本發明之又一實施形態之偏光膜的剖視圖。如圖7所示,偏光膜11於偏光元件1之一個面上具有支持體2(以下有時稱為第1支持體2),於偏光元件1之另一個面上具有支持體3(以下稱為第2支持體3)。第2支持體3具有圖案結構。第2支持體3之圖案結構可與第1支持體2之圖案結構相同,亦可不同。於第1支持體2之圖案結構與第2支持體3之圖案結構相同之情形時,較佳為如圖7所示第1支持體2與第2支持體3以俯視下相互重疊之部分之面積變小之方式配置。藉此,偏光膜11與僅於偏光元件之一個面上具有支持體之偏光膜相比,剛性更高,加工性更高。 圖8係本發明之又一實施形態之偏光膜的剖視圖。如圖8所示,偏光膜12於偏光元件1之一個面上具備將支持體2包埋之包埋樹脂層4。藉此,能夠使由支持體2所形成之階差平滑化。進而,包埋樹脂層4藉由覆蓋偏光元件1之露出部分,而可保護偏光元件1之表面。又,亦可將2個以上之上述實施形態加以組合。 偏光膜較佳為於實施扭轉試驗後沿著偏光元件之吸收軸方向不存在從一端延伸至另一端之裂紋、偏光膜之開裂、及漏光。扭轉試驗可使用YUASA SYSTEM機器公司製造之面狀體無負荷扭轉試驗機(產品名:主體TCDM111LH及治具:面狀體無負荷扭轉試驗治具)並按照以下順序進行。如圖9所示,將120 mm(吸收軸方向)×80 mm(透射軸方向)之單片狀之偏光膜10之兩條短邊用上述試驗機之扭轉用夾子18、19夾住固定後,在將一短邊用夾子19固定之情況下將另一短邊側之夾子18於下述條件下進行扭轉。 扭轉速度:10 rpm 扭轉角度:45度 扭轉次數:100次 偏光膜較佳為於實施U字形伸縮試驗後不存在偏光元件之斷裂、偏光膜之開裂、及漏光。U字形伸縮試驗可使用YUASA SYSTEM機器公司製造之面狀體無負荷U字形伸縮試驗機(產品名:主體DLDM111LH及治具:面狀體無負荷U字形伸縮試驗治具)並按照以下之順序進行。如圖10所示,將100 mm(吸收軸方向)×50 mm(透射軸方向)之單片狀之偏光膜10之兩端部x、y(50 mm)用雙面膠帶(未圖示)固定於上述試驗機之支持部21、22上後,於下述條件下進行偏光膜10之單面側(第1面)向內側形成U字形之伸縮,使偏光膜10彎曲。U字形伸縮係設定為彎曲R(彎曲半徑)成為3 mm,從平面之狀態彎曲至偏光膜10以對折狀態進行接觸為止。上述彎曲係藉由支持部之動作對兩端部x、y進行兩端部x、y之接觸,並且偏光膜10之其他部分係利用另外設置之板部23、24從兩外側無負荷地***至兩板部間而進行接觸。又,關於因上述伸縮引起之彎曲,對於偏光膜10之另一面側(第2面)亦同樣地進行向內側形成U字形之伸縮。 伸縮速度:30 rpm 彎曲R:3 mm 伸縮次數:100次 偏光膜之抗彎曲度較佳為未達60 mm。抗彎曲度係表示吸收軸方向及透過軸方向之彎曲追隨性(對彎曲之低抗性)之柔軟性的指標。偏光膜10之抗彎曲度可依據JIS L1096所規定之懸臂法並藉由圖11所示之使用懸臂型柔軟度試驗機之抗彎曲性試驗加以評價。具體而言,偏光膜10之抗彎曲度係表示如下者:於具有45°之斜面且剖面為梯形之光滑SUS板台41之頂部設置偏光膜,使偏光膜以10 mm/sec之推出速度平穩地滑動至斜面側,偏光膜10之前端首次與斜面接觸時偏光膜10於頂部之移動距離L(mm)。上述偏光膜10與具有偏光元件與保護膜之先前之偏光板相比為薄型,且具有可撓性。 偏光膜較佳為藉由如下熱休克試驗所產生之貫通裂紋之條數為3條以下,該熱休克試驗係將於-40℃與85℃之溫度環境下分別保持30分鐘之操作重複進行10次。較佳為藉由上述熱休克試驗所產生之貫通裂紋之條數為0條。進而較佳為藉由上述熱休克試驗所產生之貫通裂紋之條數為0條,且所產生之非貫通裂紋之條數亦為0條。 B.偏光元件 作為偏光元件,可採用任意適當之偏光元件。例如,形成偏光元件之樹脂膜可為單層之樹脂膜,亦可為兩層以上之積層體。 作為由單層樹脂膜構成之偏光元件之具體例,可列舉:聚乙烯醇(PVA)系膜、部分縮甲醛化PVA系膜,對乙烯-乙酸乙烯酯共聚物系部分皂化膜等親水性高分子膜實施利用碘或二色性染料等二色性物質之染色處理及延伸處理而獲得之膜,PVA之脫水處理物或聚氯乙烯之脫鹽酸處理物等多烯系配向膜等。利用碘對PVA膜進行染色並進行單軸延伸而獲得之偏光元件由於光學特性優異,故而可較佳地使用。 上述利用碘之染色例如係藉由將PVA膜浸漬於碘水溶液中而進行。上述單軸延伸之延伸倍率較佳為3~7倍。延伸可於染色處理後進行,亦可一邊染色一邊進行。又,延伸後亦可進行染色。視需要對PVA系膜實施膨潤處理、交聯處理、洗淨處理、乾燥處理等。例如藉由在染色前將PVA系膜浸漬於水中進行水洗,不僅可洗淨PVA系膜表面之污物或抗黏連劑,而且可使PVA系膜膨潤而防止染色不均等。 作為使用積層體所獲得之偏光元件之具體例,可列舉樹脂基材與積層於該樹脂基材上之PVA系樹脂層(PVA系樹脂膜)之積層體,或使用樹脂基材與塗佈形成於該樹脂基材上之PVA系樹脂層之積層體而獲得之偏光元件。使用樹脂基材與塗佈形成於該樹脂基材上之PVA系樹脂層之積層體而獲得之偏光元件例如可藉由如下方式製作:於樹脂基材上塗佈PVA系樹脂溶液,使其乾燥,於樹脂基材上形成PVA系樹脂層,而獲得樹脂基材與PVA系樹脂層之積層體;將該積層體延伸及染色,而將PVA系樹脂層製成偏光元件。於本實施形態中,延伸代表性而言包括將積層體浸漬於硼酸水溶液中進行延伸。進而,延伸視需要亦可包括:於硼酸水溶液中之延伸之前,於高溫(例如95℃以上)下對積層體進行空中延伸。所獲得之樹脂基材/偏光元件之積層體可直接使用(即,可將樹脂基材作為偏光元件之保護層),亦可從樹脂基材/偏光元件之積層體剝離樹脂基材,於該剝離面上根據目的積層任意適當之保護層而使用。此種偏光元件之製造方法之詳細內容記載於例如日本專利特開2002-73580號公報中。該公報之全部記載係作為參考而引用至本說明書中。 偏光元件之厚度較佳為25 μm以下,更佳為1 μm~15 μm,進而較佳為2 μm~10 μm,尤佳為3 μm~8 μm。若偏光元件之厚度為此種範圍內,則能夠良好地抑制加熱時之捲曲,並且能夠獲得良好之加熱時之外觀耐久性。 偏光元件較佳為於波長為380 nm~780 nm之任一波長下顯示出吸收二色性。偏光元件之單獨體透射率較佳為42.0%~46.0%,更佳為44.5%~46.0%。偏光元件之偏光度較佳為97.0%以上,更佳為99.0%以上,進而較佳為99.9%以上。 C.支持體 支持體如上所述具有含有俯視下與偏光元件之吸收軸交叉之部分的圖案結構。支持體較佳為具有選自由蜂窩結構、桁架結構、框架結構、條狀結構、及圓結構所組成之群中之至少任一種結構。支持體更佳為具有蜂窩結構、桁架結構、或圓結構,尤佳為具有蜂窩結構或圓結構。其原因在於,於支持體具有蜂窩結構、桁架結構、或圓結構之情形時,當偏光膜於一方向上受到應力時,可於與該方向不同之方向上分散應力,結果能夠抑制偏光元件產生裂紋。 支持體較佳為透明且實質上於光學上具有等向性。於本說明書中,「實質上於光學上具有等向性」係指相位差值小至實質上不影響偏光膜之光學特性之程度。例如支持體之面內相位差Re(550)及厚度方向相位差Rth(550)分別較佳為20 nm以下,更佳為10 nm以下。此處,「Re(550)」係於23℃下利用波長為550 nm之光所測得之面內相位差。Re(550)於將層(膜)之厚度設為d(nm)時根據式:Re(550)=(nx-ny)×d而求出。「Rth(550)」係於23℃下利用波長為550 nm之光所測得之厚度方向之相位差。Rth(550)於將層(膜)之厚度設為d(nm)時根據式:Rth(550)=(nx-nz)×d而求出。再者,「nx」係面內之折射率達到最大之方向(即遲相軸方向)之折射率,「ny」係於面內與遲相軸正交之方向(即進相軸方向)之折射率,「nz」係厚度方向之折射率。 支持體之厚度如上所述較佳為1 μm~15 μm,更佳為3 μm~8 μm。支持體之厚度(t2)相對於偏光元件之厚度(t1)之比(t2/t1)較佳為0.13~5.00,更佳為0.38~4.00,進而較佳為0.63~3.33。 支持體於23℃下之壓縮彈性模數較佳為0.01 GPa~8.0 GPa,更佳為0.02 GPa~6.0 GPa。藉此,能夠抑制偏光元件之裂紋之行進,並且提高偏光膜之加工性及可撓性。 支持體只要滿足上述構成且與偏光元件具有充分之密接性,則可藉由任意適當之材料及方法而形成。支持體對於偏光元件之密接性可依據JIS K5400之棋盤格剝離試驗進行評價。支持體對於偏光元件之密接性較佳為於上述棋盤格剝離試驗(棋盤格數:100個)中剝離數為0。 於一實施形態中,具有圖案結構之支持體可藉由在偏光元件之表面形成樹脂材料或含有樹脂材料之塗佈液之圖案,並使樹脂材料硬化(或固化)而形成。於另一實施形態中,支持體可藉由在偏光元件之表面蒸鍍SiO2
等無機氧化物而形成。 作為上述樹脂材料,只要能夠獲得本發明之效果,可使用任意適當之材料。作為上述樹脂材料,例如可列舉聚酯系樹脂、聚醚系樹脂、聚碳酸酯系樹脂、聚胺基甲酸酯系樹脂、聚矽氧系樹脂、聚醯胺系樹脂、聚醯亞胺系樹脂、PVA系樹脂、丙烯酸系樹脂、環氧系樹脂、氟系樹脂。該等可單獨使用,亦可組合(例如混合、共聚合)而使用。 於偏光元件之表面上形成上述樹脂材料或上述塗佈液之圖案之方法並無特別限定。作為上述方法,例如可列舉印刷、光微影、噴墨、噴嘴、模塗等。上述樹脂材料或上述塗佈液之圖案較佳為藉由印刷而形成。作為將塗佈液印刷為圖案狀之方法,可列舉凸版印刷法、直接凹版印刷法、凹版印刷法、平版印刷法、孔版印刷法等。塗佈液除上述樹脂材料以外,亦可於無損本發明效果之範圍內含有任意適當之其他成分。作為如此之其他成分,例如可列舉:作為主成分之上述樹脂材料以外之樹脂成分、增黏劑、無機填充劑、有機填充劑、金屬粉、顏料、箔狀物、軟化劑、抗老化劑、導電劑、紫外線吸收劑、抗氧化劑、光穩定劑、表面潤滑劑、調平劑、防腐劑、耐熱穩定劑、聚合抑制劑、潤滑劑、溶劑、觸媒等。 作為使上述樹脂材料(塗佈液)硬化(或固化)之條件,可根據樹脂材料之種類及組合物之組成等而適當設定。例如可藉由乾燥、活性能量線硬化、熱硬化等使樹脂材料硬化(或固化)。 D.包埋樹脂層 包埋樹脂層如上所述將形成於偏光元件之一面上之支持體包埋。包埋樹脂層之厚度厚於支持體之厚度,較佳為3 μm~150 μm,更佳為5 μm~100 μm。包埋樹脂層亦可為根據偏光膜所要求之特性而形成之任意適當之功能層。作為上述功能層,例如可列舉硬塗層、黏著劑層、透明光學黏著層等。於包埋樹脂層為硬塗層之情形時,其厚度例如為5 μm~15 μm,於包埋樹脂層為黏著劑層之情形時,其厚度例如為5 μm~30 μm,於包埋樹脂層為透明光學黏著層之情形時,其厚度例如為25 μm~125 μm。包埋樹脂層較佳為透明且實質上於光學上具有等向性。 包埋樹脂層只要與偏光元件及支持體具有充分之密接性,則可藉由任意適當之材料及方法而形成。於一實施形態中,包埋樹脂層可利用與支持體不同種類之樹脂材料而形成。包埋樹脂層可藉由在偏光元件之表面形成樹脂層以將支持體包埋,並使樹脂層硬化而形成。 於偏光元件之表面上形成上述樹脂層之方法並無特別限定。於一實施形態中,可藉由將包含樹脂材料之塗佈液塗佈至偏光元件之表面上,而形成樹脂層。作為塗佈方法,可使用任意適當之塗佈方法。作為具體例,可列舉淋幕式塗佈法、浸漬塗佈法、旋轉塗佈法、印刷塗佈法、噴霧塗佈法、狹縫塗佈法、輥塗佈法、斜板式塗佈法、刮刀塗佈法、凹版塗佈法、線棒塗佈法。硬化條件可根據所使用之樹脂材料之種類及組合物之組成等而適當設定。塗佈液除上述樹脂材料以外,亦可於無損本發明效果之範圍內含有任意適當之其他成分。作為如此之其他成分,例如可列舉:作為主成分之上述樹脂材料以外之樹脂成分、增黏劑、無機填充劑、有機填充劑、金屬粉、顏料、箔狀物、軟化劑、抗老化劑、導電劑、紫外線吸收劑、抗氧化劑、光穩定劑、表面潤滑劑、調平劑、防腐劑、耐熱穩定劑、聚合抑制劑、潤滑劑、溶劑、觸媒等。 E.第2支持體 如上所述,於第1支持體之圖案結構與第2支持體之圖案結構相同之情形時,第2支持體較佳為以俯視下與第1支持體重疊部分之面積變小之方式配置。第2支持體之構成、功能等如關於支持體(第1支持體)之C項中之說明所述。 F.其他光學膜及圖像顯示裝置 偏光膜可以積層有相位差膜等其他光學膜之光學積層體之形式使用。又,上述A項至E項中所記載之上述偏光膜及上述光學積層體可應用於液晶顯示裝置等圖像顯示裝置。因此,本發明包括使用有上述偏光膜之圖像顯示裝置。本發明之實施形態之圖像顯示裝置具備上述A項至E項中所記載之偏光膜。 [實施例] 以下,列舉實施例說明本發明,但本發明不限於以下所示之實施例。再者,各例中之份及%均為重量基準。以下,無特別規定之室溫放置條件均為23℃、65%RH。 1.偏光元件之製作 <製造例1> 對吸水率為0.75%、Tg為75℃之非晶質之間苯二甲酸共聚合聚對苯二甲酸乙二酯(IPA共聚合PET)膜(厚度:100 μm)基材之單面實施電暈處理,於該電暈處理面上,於25℃下塗佈以9:1之比含有聚乙烯醇(聚合度為4200,皂化度為99.2莫耳%)及乙醯乙醯基改性PVA(聚合度為1200,乙醯乙醯基改性度為4.6%,皂化度為99.0莫耳%以上,日本合成化學工業公司製造,商品名「GOHSEFIMER Z200」)之水溶液並乾燥,形成厚度為11 μm之PVA系樹脂層,而製作積層體。將所獲得之積層體於120℃之烘箱內於圓周速度不同之輥間沿縱向(長度方向)進行自由端單軸延伸(空中輔助延伸處理)至2.0倍。繼而,將積層體於液溫為30℃之不溶浴(對水100重量份調配硼酸4重量份而獲得之硼酸水溶液)中浸漬30秒(不溶處理)。繼而,於液溫為30℃之染色浴中,一邊以偏光板成為特定之透射率調整碘濃度、浸漬時間一邊浸漬。於本製造例中,於對水100重量份調配碘0.2重量份並調配碘化鉀1.0重量份而獲得之碘水溶液中浸漬60秒(染色處理)。繼而,於液溫為30℃之交聯浴(對水100重量份調配碘化鉀3重量份並調配硼酸3重量份而獲得之硼酸水溶液)中浸漬30秒(交聯處理)。其後,將積層體浸漬於液溫為70℃之硼酸水溶液(對水100重量份調配硼酸4重量份並調配碘化鉀5重量份而獲得之水溶液)中,同時於圓周速度不同之輥間沿縱向(長度方向)進行單軸延伸至總延伸倍率成為5.5倍(水中延伸處理)。其後,將積層體浸漬於液溫為30℃之洗淨浴(對水100重量份調配碘化鉀4重量份而獲得之水溶液)中(洗淨處理)。由此獲得含有厚度為5 μm之偏光元件的偏光元件積層體A。 <製造例2> 將塗佈乾燥後之PVA系樹脂層之厚度變更為15 μm,除此以外,與製造例1同樣地製作含有厚度為7 μm之偏光元件的偏光元件積層體B。 2.支持體形成材料之製作 <製造例3> 對丙烯酸胺基甲酸酯寡聚物(日本合成化學公司製造、「紫光UV7560B」)100份加入N-(2-羥基乙基)丙烯醯胺(Kohjin公司製造、「HEAA」)20份、光起始劑(BASF公司製造,「IRUGACURE 907」)3份,使用甲基異丁基酮作為溶劑,而獲得以能夠以指定膜厚進行塗佈之方式調整固形物成分濃度的塗劑A。 <製造例4> 對丙烯酸胺基甲酸酯寡聚物(日本合成化學公司製造、「紫光UV7000B」)100份加入N-(2-羥基乙基)丙烯醯胺(Kohjin公司製造、「HEAA」)20份、光起始劑(BASF公司製造,「IRUGACURE 907」)3份,使用甲基異丁基酮作為溶劑,而獲得以能夠以指定膜厚進行塗佈之方式調整固形物成分濃度的塗劑B。 <製造例5> 對丙烯酸胺基甲酸酯寡聚物(日本合成化學公司製造、「紫光UV3520TL」)100份加入N-(2-羥基乙基)丙烯醯胺(Kohjin公司製造、「HEAA」)20份、光起始劑(BASF公司製造,「IRUGACURE 907」)3份,使用甲基異丁基酮作為溶劑,而獲得以能夠以指定膜厚進行塗佈之方式調整固形物成分濃度的塗劑C。 <製造例6> 對丙烯酸胺基甲酸酯寡聚物(日本合成化學公司製造、「紫光UV6640B」)100份加入N-(2-羥基乙基)丙烯醯胺(Kohjin公司製造、「HEAA」)20份、光起始劑(BASF公司製造,「IRUGACURE 907」)3份,使用甲基異丁基酮作為溶劑,而獲得以能夠以指定膜厚進行塗佈之方式調整固形物成分濃度的塗劑D。 <製造例7> 使用紫外線硬化型網版油墨(screen ink)(帝國油墨股份有限公司製造,「UV FIL網版油墨611白」(固形物成分為76%))、稀釋溶劑(帝國油墨股份有限公司製造,「RE-806 reducer」,而獲得以能夠以指定膜厚進行塗佈之方式調整固形物成分濃度的塗劑E。 <製造例8> 對丙烯酸胺基甲酸酯寡聚物(日本合成化學公司製造,「紫光UV1700」)100份加入N-(2-羥基乙基)丙烯醯胺(Kohjin公司製造,「HEAA」)20份、光起始劑(BASF公司製造,「IRUGACURE 907」)3份,使用甲基異丁基酮作為溶劑,而獲得以能夠以指定膜厚進行塗佈之方式調整固形物成分濃度的塗劑F。 3.附帶黏著劑層之剝離膜之製作 <製造例9> 向具備冷卻管、氮氣導入管、溫度計及攪拌裝置之反應容器中,與乙酸乙酯一併加入丙烯酸丁酯100份、丙烯酸3份、丙烯酸2-羥基乙酯0.1份及2,2'-偶氮雙異丁腈0.3份,而製備溶液。繼而,一邊對該溶液吹入氮氣一邊加以攪拌,於55℃下反應8小時,而獲得含有重量平均分子量為220萬之丙烯酸系聚合物之溶液。進而,向該含有丙烯酸系聚合物之溶液中加入乙酸乙酯,而獲得將固形物成分濃度調整為30%之丙烯酸系聚合物溶液。 相對於上述丙烯酸系聚合物溶液之固形物成分100份,依序調配作為交聯劑之0.5份之以具有異氰酸酯基之化合物作為主成分之交聯劑(日本聚氨酯(股份)製造、商品名「Coronate L」)、與作為矽烷偶合劑之0.075份之γ-縮水甘油氧基丙基三甲氧基甲矽烷(信越化學工業(股份)製造、商品名「KMB-403」),而製備黏著劑。 於經剝離處理之包含聚對苯二甲酸乙二酯膜(厚度為38 μm)之脫模片(隔離膜)之表面,以乾燥後之厚度成為25 μm之方式塗佈上述黏著劑並使之乾燥,藉此製作附帶黏著劑層之剝離膜。 <實施例1> 1.偏光膜之製作 將上述塗劑A以硬化後之厚度成為7 μm之方式在上述偏光元件積層體A之偏光元件側之面上塗佈成蜂窩狀,於60℃、120秒之條件下使其乾燥。再者,塗劑之塗佈係使用精密台式印刷機(NEWLONG精密工業股份有限公司製造,「DP-320型」)與成形為蜂窩狀圖案之網版(網眼尺寸為#500、線徑為18 μm、厚度為38 μm、乳劑厚度為10 μm)。 其後,藉由利用高壓水銀燈照射累積光量為500 mJ/cm2
之紫外線,使塗劑硬化,而形成蜂窩結構(線寬:1.0 mm,正六邊形之一條邊之長度:4.0 mm)之支持體(第1支持體)。繼而,於上述支持體上貼合表面保護膜(日東電工公司製造,「RP301」),將上述偏光元件積層體A之非結晶性PET基材剝離。其後,藉由將表面保護膜剝離,而製作具有偏光元件與第1支持體之偏光膜1。 2.附帶黏著劑層之偏光膜之製作 於上述偏光膜1之偏光元件側之面上貼合上述附帶黏著劑層之剝離膜之黏著劑層側之面,而製作附帶黏著劑層之偏光膜1。 <實施例2> 使用塗劑B作為塗劑,除此以外,與實施例1同樣地製作偏光膜2及附帶黏著劑層之偏光膜2。 <實施例3> 使用塗劑C作為塗劑,除此以外,與實施例1同樣地製作偏光膜3及附帶黏著劑層之偏光膜3。 <實施例4> 使用塗劑D作為塗劑,除此以外,與實施例1同樣地製作偏光膜4及附帶黏著劑層之偏光膜4。 <實施例5> 使用塗劑E作為塗劑,除此以外,與實施例1同樣地製作偏光膜5及附帶黏著劑層之偏光膜5。 <實施例6> 1.偏光膜之製作 將上述塗劑E以硬化後之厚度成為7 μm之方式在上述偏光元件積層體A之偏光元件側之面上塗佈成蜂窩狀,於60℃、120秒之條件下使其乾燥。又,塗劑之塗佈係使用精密台式印刷機(NEWLONG精密工業股份有限公司製造,「DP-320型」)與成形為蜂窩狀圖案之網版(網眼尺寸為#500、線徑為18 μm、厚度為38 μm、乳劑厚度為10 μm)。 其後,藉由利用高壓水銀燈照射累積光量為500 mJ/cm2
之紫外線,使塗劑硬化,而形成蜂窩結構(線寬:1.0 mm,正六邊形之一條邊之長度:4.0 mm)之支持體(第1支持體)。繼而,於上述支持體上貼合表面保護膜(日東電工公司製造,「RP301」),將上述偏光元件積層體A之非結晶性PET基材剝離。 繼而,使用上述塗劑E,於偏光元件之與形成有第1支持體之面相反側之面上,以俯視下與第1支持體重疊之方式與第1支持體同樣地形成蜂窩結構(線寬:1.0 mm,正六邊形之一條邊之長度:4.0 mm)之第2支持體。其後,藉由將表面保護膜剝離,而製作具有偏光元件與第1及第2支持體之偏光膜6。 2.附帶黏著劑層之偏光膜之製作 於上述偏光膜6之第2支持體側之面上貼合上述附帶黏著劑層之剝離膜之黏著劑層側之面,而製作附帶黏著劑層之偏光膜6。 <實施例7> 將第1及第2支持體之厚度設為3 μm,除此以外,與實施例6同樣地製作偏光膜7及附帶黏著劑層之偏光膜7。 <實施例8> 將第1及第2支持體之厚度設為5 μm,除此以外,與實施例6同樣地製作偏光膜8及附帶黏著劑層之偏光膜8。 <實施例9> 將第1及第2支持體之厚度設為14 μm,除此以外,與實施例6同樣地製作偏光膜9及附帶黏著劑層之偏光膜9。 <實施例10> 以俯視下第2支持體之正六邊形之頂點與第1支持體之正六邊形之中心重疊之方式(俯視下第1支持體與第2支持體之位置相互錯開之方式)形成第2支持體,除此以外,與實施例6同樣地製作偏光膜10及附帶黏著劑層之偏光膜10。 <實施例11> 使用偏光元件積層體B作為偏光元件積層體,除此以外,與實施例10同樣地製作偏光膜11及附帶黏著劑層之偏光膜11。 <實施例12> 將第1及第2支持體之蜂窩結構之線寬設為1.8 mm,除此以外,與實施例10同樣地製作偏光膜12及附帶黏著劑層之偏光膜12。 <實施例13> 將第1及第2支持體之蜂窩結構之線寬設為0.8 mm,將正六邊形之一條邊之長度設為3.0 mm,除此以外,與實施例10同樣地製作偏光膜13及附帶黏著劑層之偏光膜13。 <實施例14> 將第1及第2支持體之蜂窩結構之線寬設為0.5 mm,將正六邊形之一條邊之長度設為2.0 mm,除此以外,與實施例10同樣地製作偏光膜14及附帶黏著劑層之偏光膜14。 <實施例15> 將第1及第2支持體之蜂窩結構之線寬設為1.5 mm,將正六邊形之一條邊之長度設為2 mm,除此以外,與實施例10同樣地製作偏光膜15及附帶黏著劑層之偏光膜15。 <實施例16> 使用成形為桁架圖案之網版(網眼尺寸為#500、線徑為18 μm、厚度為38 μm、乳劑厚度為10 μm)塗佈塗劑,將第1及第2支持體製成桁架結構(線寬:0.6 mm、三角形之一條邊之長度為4.0 mm),並以俯視下第2支持體之三角形之頂點與第1支持體之三角形之中心重疊之方式(俯視下第1支持體與第2支持體之位置相互錯開之方式)形成第2支持體,除此以外,與實施例10同樣地製作偏光膜16及附帶黏著劑層之偏光膜16。 <實施例17> 將第1及第2支持體之桁架結構之線寬設為0.5 mm,將三角形之一條邊之長度設為5.5 mm,除此以外,與實施例16同樣地製作偏光膜17及附帶黏著劑層之偏光膜17。 <實施例18> 使用成形為框架狀圖案之網版(網眼尺寸為#500、線徑為18 μm、厚度為38 μm、乳劑厚度為10 μm)塗佈塗劑,將第1及第2支持體製成框架結構(線寬:1.0 mm,正方形之一條邊之長度:4.0 mm),並以俯視下第2支持體之正方形之頂點與第1支持體之正方形之中心重疊之方式(俯視下第1支持體與第2支持體之位置相互錯開之方式)形成第2支持體,除此以外,與實施例10同樣地製作偏光膜18及附帶黏著劑層之偏光膜18。 <實施例19> 將第1及第2支持體之框架結構之線寬設為1.3 mm,將三角形之一條邊之長度設為3.0 mm,除此以外,與實施例18同樣地製作偏光膜19及附帶黏著劑層之偏光膜19。 <實施例20> 使用成形為條狀圖案之網版(網眼尺寸為#500、線徑為18 μm、厚度為38 μm、乳劑厚度為10 μm)塗佈塗劑,將第1及第2支持體製成沿著與偏光元件之吸收軸正交之方向延伸之條狀結構(線寬:1.0 mm,條紋間隔:4.0 mm),並以俯視下與第1支持體重疊之方式形成第2支持體,除此以外,與實施例6同樣地製作偏光膜20及附帶黏著劑層之偏光膜20。 <實施例21> 使用塗劑F作為塗劑,除此以外,與實施例1同樣地製作偏光膜21及附帶黏著劑層之偏光膜21。 <實施例22> 使用塗劑F作為塗劑,除此以外,與實施例10同樣地製作偏光膜22及附帶黏著劑層之偏光膜22。 <比較例1> 1.偏光膜之製作 將表面保護膜(日東電工公司製、「RP301」)貼合至上述偏光元件積層體A之偏光元件側之面上,並將上述偏光元件積層體A之非結晶性PET基材剝離。其後,將表面保護膜剝離,藉此製作包含偏光元件之偏光膜23。 2.附帶黏著劑層之偏光膜之製作 於上述偏光膜23之一個面上貼合上述附帶黏著劑層之剝離膜之黏著劑層側之面,而製作附帶黏著劑層之偏光膜23。 <比較例2> 使用線棒塗佈機,將上述塗劑E以硬化後之厚度成為7 μm之方式塗佈至上述偏光元件積層體A之偏光元件側之整個面上,並於60℃、120秒之條件下進行乾燥。其後,藉由利用高壓水銀燈照射累計光量為500 mJ/cm2
之紫外線,使塗劑硬化,而於偏光元件積層體A之偏光元件側之整個面形成支持體(第1支持體)。繼而,於上述第1支持體上貼合表面保護膜(日東電工公司製造、「RP301」),並將上述偏光元件積層體A之非晶性PET基材加以剝離。 繼而,使用上述塗劑E,於與偏光元件之形成有第1支持體之面相反側之面上,於與第1支持體相同之條件下形成第2支持體。其後,將表面保護膜加以剝離,藉此製作具有偏光元件與第1及第2支持體之偏光膜24。 2.附帶黏著劑層之偏光膜之製作 於上述偏光膜24之第2支持體側之面上貼合上述附帶黏著劑層之剝離膜之黏著劑層側之面,而製作附帶黏著劑層之偏光膜24。 <比較例3> 將第1及第2支持體之厚度設為5 μm,除此以外,與比較例2同樣地製作偏光膜25及附帶黏著劑層之偏光膜25。 <比較例4> 將第1及第2支持體設為沿著與偏光元件之吸收軸平行之方向延伸之條狀結構,除此以外,與實施例20同樣地製作偏光膜26及附帶黏著劑層之偏光膜26。 <比較例5> 1.偏光膜之製作 將N-羥乙基丙烯醯胺(HEAA)40重量份、丙烯醯嗎啉(ACMO)60重量份、與光起始劑(BASF公司製造,「IRGACURE 819」)3重量份加以混合,而製備紫外線硬化型接著劑。 於上述偏光元件積層體A之偏光元件側之面上,以硬化後之厚度成為1 μm之方式塗佈上述接著劑,並貼合對具有內酯環結構之(甲基)丙烯酸樹脂膜之易接著處理面實施電暈處理而成之保護膜(厚度:40 μm)後,照射紫外線作為活性能量線,而使接著劑硬化。再者,紫外線照射係使用封入有鎵之金屬鹵化物燈(Fusion UV Systems,Inc公司製造,產品名「Light HAMMER10」,燈泡:V形燈泡,峰值照度:1600 mW/cm2
,累計照射量為1000/mJ/cm2
(波長為380~440 nm))。紫外線之照度係使用分光照度計(Solatell公司製造,產品名「Sola-Check系統」)進行測定。 繼而,將偏光元件積層體A之非結晶性PET基材剝離,而製作具有偏光元件與保護膜之偏光膜27。 2.附帶黏著劑層之偏光膜之製作 於上述偏光膜27之偏光元件側之面上貼合上述附帶黏著劑層之剝離膜之黏著劑層側之面,而製作附帶黏著劑層之偏光膜27。 <比較例6> 使用對具有內酯環結構之(甲基)丙烯酸樹脂膜之易接著處理面實施電暈處理而成之保護膜(厚度:20 μm)作為保護膜,除此以外,與比較例5同樣地製作偏光膜28及附帶黏著劑層之偏光膜28。 <評價> 將偏光膜1~28供於以下之密接性試驗、抗彎曲性試驗、扭轉試驗、及U字形伸縮試驗。又,將附帶黏著劑層之偏光膜1~28供於以下之熱休克試驗。將評價結果示於表1。 <密接性試驗> 依據JIS K5400之棋盤格剝離試驗(棋盤格數:100個)測定第1支持體對於偏光元件之密接性,並基於以下基準進行評價。 ○:第1支持體之剝離數為0。 ×:第1支持體之剝離數為1個以上。 <抗彎曲性試驗> 使用安田精機製作所製造之No.476之懸臂型柔軟度試驗機。又,由於在本試驗中排除靜電之影響,故而對試驗所使用之樣品等加以去靜電而進行。將抗彎曲性試驗之情況示於圖11。 將偏光膜切成150 mm(吸收軸方向)×50 mm(透過軸方向)之尺寸作為試驗用之樣品。以容納於頂部為平面(150 mm×50 mm:與樣品相同之尺寸)、長邊之一端具有45°之斜面、剖面為梯形之光滑SUS板台41之頂面之方式設置上述樣品。樣品之設置係以吸收軸方向上有斜面之方式進行。使上述樣品以10 mm/sec之推出速度滑動至斜面側(1)。於樣品之前端首次與斜面接觸之處停止移動樣品(2)。測定頂部為平面時樣品移動之距離L(mm)(3)。 抗彎曲度(mm)係對分別以第1面為上側之情形且以第2面為上側之情形之2個圖案測定3次最短直線距離L(mm),並採用該等之算術平均值。又,於任一次以上之測定中有因樣品之變形或彎曲而無法測定之樣品之情形時,將該樣品判定為無法測定。 <扭轉試驗> 使用YUASA SYSTEM機器公司製造之面狀體無負荷扭轉試驗機(產品名:主體TCDM111LH)及治具(面狀體無負荷扭轉試驗治具)進行。將扭轉試驗之情況示於圖9。 將偏光膜切成120 mm(吸收軸方向)×80 mm(透射軸方向)之尺寸作為試驗用樣品。將上述樣品之兩短邊利用上述試驗機之扭轉用夾子18、19夾住固定後,在利用夾子19固定一短邊之情況下,於下述條件下扭轉另一短邊側之夾子18。 扭轉速度:10 rpm 扭轉角度:45度 扭轉次數:100次 藉由目視並基於以下基準評價扭轉試驗後之樣品之狀態。又,於有因樣品之變形或捲曲導致無法測定之樣品之情形時,將該樣品判定為無法測定。 ○:未發生開裂及漏光。且未殘留折痕。 △:未發生開裂及漏光。但殘留折痕。 ×:發生開裂及漏光。且殘留折痕。 <U字形伸縮試驗> 使用YUASA SYSTEM機器公司製造之面狀體無負荷U字形伸縮試驗機(產品名:主體DLDM111LH)及治具(面狀體無負荷U字形伸縮試驗治具)進行。將U字形伸縮試驗之情況示於圖10。 將偏光膜切成100 mm(吸收軸方向)×50 mm(透射軸方向)之尺寸作為試驗用樣品。將上述樣品之兩端部利用雙面膠帶(未圖示)固定於上述試驗機之夾固部分21、22上之後,於下述條件下進行上述樣品之單面側(第1面)向內側形成U字形之伸縮,使上述樣品彎曲。關於U字形伸縮,以彎曲R(彎曲半徑)成為3 mm之方式進行設定,從平面之狀態將樣品彎曲成對折狀態。上述彎曲係藉由夾具之動作進行兩端部x、y之接觸,並且試樣之其他部分係利用另外設置之板部23、24從兩外側無負荷地***至兩板部間。 又,上述利用伸縮之彎曲於上述矩形物之另一面側(第2面)上亦與上述同樣地進行向內側形成為U字形之伸縮。 伸縮速度:30 rpm 彎曲R:3 mm 伸縮次數:100次 藉由目視基於下述標準評價U字形伸縮試驗之樣品之狀態。又,於有因試樣之變形或捲曲導致無法測定之樣品之情形時,將該樣品判定為無法測定。 ○:未發生開裂與漏光。並未殘留折痕。 ×:發生開裂或漏光。或確認到折痕。 <熱休克試驗> 將附帶黏著劑層之偏光膜剪裁為50 mm(吸收軸方向)×150 mm(透過軸方向)之尺寸,並貼合於厚度為0.5 mm之鹼玻璃上,而製作試驗用之樣品。 將該樣品投入至進行-40~85℃之熱休克各30分鐘×10次之環境下之後,取出並目測確認附帶黏著劑層之偏光膜是否產生貫通裂紋(條數)。於進行該試驗5次後,採用裂紋數較多之樣品。評價係依據下述而進行。 ◎:無貫通裂紋。 ○:無貫通裂紋。有裂紋。 △:有1~3條貫通裂紋。 ×:有4條以上貫通裂紋。 <支持體之壓縮彈性模數> 按以下順序測定支持體於23℃下之壓縮彈性模數。 將塗劑A以硬化後之厚度成為5 μm之方式塗佈於偏光元件積層體A之偏光元件側之面上,於60℃、120秒之條件下使其乾燥,藉此製作於偏光元件積層體A上形成有包含塗劑A之硬化物之層的樣品A。同樣地使用塗劑B~F製作樣品B~F。使用上述所製作之樣品A~F,藉由下述方法測定壓縮彈性模數,將藉由測定而獲得之壓縮彈性模數之值作為支持體A~F於23℃下之壓縮彈性模數。 壓縮彈性模數之測定係使用TI900 TriboIndenter(Hysitron公司製造)。 將上述所獲得之樣品切割成10 mm×10 mm之尺寸,固定於具有TriboIndenter之支持體上,藉由奈米壓痕法測定壓縮彈性模數。此時,以所用壓頭壓入上述硬化物之中心部附近之方式調整位置。測定條件如下所示。 所用壓頭:Berkovich(三角錐形) 測定方法:單一壓入測定 測定溫度:23℃ 壓入深度設定:100 nm 支持體A~F於23℃下之壓縮彈性模數如下。 支持體A(塗劑A):2.57 GPa 支持體B(塗劑B):0.84Gpa 支持體C(塗劑C):0.07 GPa 支持體D(塗劑D):0.42 GPa 支持體E(塗劑E):0.02 GPa 支持體F(塗劑F):5.38 GPa [表1]
由表1明確,比較例1~4之附帶黏著劑層之偏光膜於熱休克試驗後產生大量之貫通裂紋,比較例5及6之偏光膜之抗彎曲度較高(可撓性較低)。相對於此,實施例1~22之偏光膜於任一試驗中均為良好之結果。 [產業上之可利用性] 本發明之偏光膜適用於液晶顯示裝置、有機EL顯示裝置等圖像顯示裝置。Hereinafter, embodiments of the present invention will be described, but the present invention is not limited to these embodiments. A. Overall Structure of Polarizing Film FIG. 1 is a plan view of a polarizing film according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a polarizing film according to an embodiment of the present invention. As shown in FIG. 2, the polarizing film 10 includes a polarizing element 1 and a support 2 formed on one surface of the polarizing element 1. The polarizing film 10 may be a single sheet or a long sheet. The polarizing element 1 typically has an absorption axis. The thickness of the support 2 is typically 1 μm to 15 μm, and the width of the support 2 in a plan view is typically 500 μm to 3000 μm. The support 2 is preferably transparent, more preferably transparent, and substantially optically isotropic. The support 2 has a pattern structure, and as a pattern structure, it typically has a honeycomb structure as shown in FIG. 1. The support 2 includes a portion that crosses the absorption axis of the polarizing element 1 in a plan view. Specifically, at least one side of the hexagon that constitutes the honeycomb structure of the support 2 crosses the absorption axis of the polarizing element 1 in a plan view. More preferably, it intersects the support 2 at least in one direction from any point to the other end of the single-piece polarizing film 10 along the direction parallel to the absorption axis of the polarizing element 1. When a crack occurs in the previous polarizing element, the crack will travel along the direction of the absorption axis of the polarizing element in such a way that the polarizing element cracks. In contrast, the polarizing film 10 of the present invention has a support 2 that includes a portion that intersects the absorption axis of the polarizing element 1 in a plan view, whereby the support 2 suppresses the progress of cracks (cracks) of the polarizing element 1. 3 to 6 are plan views of a polarizing film according to another embodiment of the present invention. The support may have a frame structure as shown in FIG. 3, a truss structure as shown in FIG. 4, or a circle structure as shown in FIG. 5 (the circle is arranged in a matrix structure), or may have Figure 6 shows the strip structure. In this way, when the pattern-shaped support 2 is formed on the surface of the polarizing element 1, the amount of materials constituting the support can be reduced compared with the case where the support is formed on the entire surface of the polarizing element 1. FIG. 7 is a cross-sectional view of a polarizing film according to another embodiment of the present invention. As shown in FIG. 7, the polarizing film 11 includes a support 2 (hereinafter sometimes referred to as a first support 2) on one surface of the polarizing element 1, and a support 3 (hereinafter referred to as a support) on the other surface of the polarizing element 1. For the second support 3). The second support 3 has a pattern structure. The pattern structure of the second support body 3 may be the same as or different from the pattern structure of the first support body 2. When the pattern structure of the first support 2 is the same as the pattern structure of the second support 3, it is preferable that the first support 2 and the second support 3 overlap each other in a plan view as shown in FIG. Placed in such a way that the area becomes smaller. Accordingly, the polarizing film 11 has higher rigidity and higher workability than a polarizing film having a support only on one surface of the polarizing element. 8 is a cross-sectional view of a polarizing film according to still another embodiment of the present invention. As shown in FIG. 8, the polarizing film 12 includes an embedding resin layer 4 in which a support 2 is embedded on one surface of the polarizing element 1. Thereby, the step difference formed by the support body 2 can be smoothed. Furthermore, the embedded resin layer 4 can protect the surface of the polarizing element 1 by covering the exposed portion of the polarizing element 1. Further, two or more of the above embodiments may be combined. It is preferable that the polarizing film is free from cracks extending from one end to the other end, cracking of the polarizing film, and light leakage along the direction of the absorption axis of the polarizing element after the torsion test is performed. The torsion test can be performed using a surface-type no-load torsion tester (product name: main body TCDM111LH and fixture: surface-type no-load torsion test fixture) manufactured by YUASA SYSTEM Machine Co., Ltd. in the following order. As shown in FIG. 9, the two short sides of the monolithic polarizing film 10 of 120 mm (in the direction of the absorption axis) × 80 mm (in the direction of the transmission axis) are clamped and fixed with the twisting clips 18 and 19 of the testing machine described above. When one short side is fixed with the clip 19, the other short side clip 18 is twisted under the following conditions. Twisting speed: 10 rpm Twisting angle: 45 degrees Twisting times: 100 times The polarizing film is preferably free of cracking of the polarizing element, cracking of the polarizing film, and light leakage after the U-shaped stretching test. The U-shaped telescopic test can be performed using a planar non-loaded U-shaped telescopic tester (product name: main body DLDM111LH and fixture: planar non-loaded U-shaped telescopic test fixture) manufactured by YUASA SYSTEM. . As shown in FIG. 10, both ends x, y (50 mm) of a single-piece polarizing film 10 of 100 mm (absorption axis direction) × 50 mm (transmission axis direction) are coated with a double-sided tape (not shown) After being fixed on the support portions 21 and 22 of the testing machine, U-shaped expansion and contraction of the single-sided side (first surface) of the polarizing film 10 toward the inside was performed under the following conditions to bend the polarizing film 10. The U-shaped telescopic system is set so that the bending R (bending radius) becomes 3 mm, and bends from a flat state until the polarizing film 10 comes into contact in a folded state. The above-mentioned bending is performed by contacting the two end portions x and y with both end portions x and y by the action of the supporting portion, and the other portions of the polarizing film 10 are inserted without load from the outside using the plate portions 23 and 24 provided separately. Contact between the two plate sections. Further, regarding the bending caused by the above-mentioned stretching, the other surface side (second surface) of the polarizing film 10 is similarly stretched inwardly to form a U-shape. Telescopic speed: 30 rpm Bending R: 3 mm Number of telescopic times: 100 times The bending resistance of the polarizing film is preferably less than 60 mm. The bending resistance is an index showing the flexibility of the bending followability (low resistance to bending) in the absorption axis direction and the transmission axis direction. The bending resistance of the polarizing film 10 can be evaluated by a bending resistance test using a cantilever type softness testing machine shown in FIG. 11 in accordance with the cantilever method prescribed in JIS L1096. Specifically, the bending resistance of the polarizing film 10 is expressed as follows: a polarizing film is provided on the top of a smooth SUS stage 41 having a 45 ° bevel and a trapezoidal cross-section, so that the polarizing film is smoothly pushed out at a speed of 10 mm / sec. When the front side of the polarizing film 10 contacts the inclined surface for the first time, the moving distance L (mm) of the polarizing film 10 on the top is slid to the inclined surface side. The above-mentioned polarizing film 10 is thin compared to a conventional polarizing plate having a polarizing element and a protective film, and has flexibility. It is preferred that the number of penetrating cracks generated by the polarizing film be 3 or less by the following heat shock test. The heat shock test is repeated for 30 minutes under the temperature environment of -40 ° C and 85 ° C. Times. Preferably, the number of penetrating cracks generated by the heat shock test is zero. Furthermore, it is preferable that the number of penetrating cracks generated by the heat shock test is zero, and the number of non-penetrating cracks generated is also zero. B. Polarizer As the polarizer, any appropriate polarizer can be used. For example, the resin film forming the polarizing element may be a single-layer resin film or a laminated body of two or more layers. Specific examples of the polarizing element composed of a single-layer resin film include a polyvinyl alcohol (PVA) film, a partially formalized PVA film, and a high hydrophilicity to a partially saponified film of an ethylene-vinyl acetate copolymer. The molecular film is a film obtained by dyeing and extending a dichromatic substance such as iodine or a dichroic dye, a polyene-based alignment film such as a dehydrated product of PVA or a dehydrochlorinated product of polyvinyl chloride. A polarizing element obtained by dyeing a PVA film with iodine and uniaxially stretching it is preferably used because of its excellent optical characteristics. The dyeing using iodine is performed, for example, by immersing a PVA film in an iodine aqueous solution. The stretching ratio of the uniaxial stretching is preferably 3 to 7 times. Stretching may be performed after the dyeing treatment, or may be performed while dyeing. In addition, dyeing may be performed after stretching. The PVA-based film is subjected to a swelling treatment, a crosslinking treatment, a washing treatment, a drying treatment, and the like, as necessary. For example, by immersing the PVA-based film in water and washing with water before dyeing, not only the dirt or anti-blocking agent on the surface of the PVA-based film can be washed, but also the PVA-based film can be swelled to prevent uneven dyeing. Specific examples of the polarizing element obtained by using the laminate include a laminate of a resin substrate and a PVA-based resin layer (PVA-based resin film) laminated on the resin substrate, or a resin substrate and coating. A polarizing element obtained by laminating a PVA-based resin layer on the resin substrate. A polarizing element obtained by using a laminate of a resin substrate and a PVA-based resin layer formed on the resin substrate can be produced, for example, by applying a PVA-based resin solution to the resin substrate and drying it. A PVA-based resin layer is formed on the resin substrate to obtain a laminated body of the resin substrate and the PVA-based resin layer; the laminated body is extended and dyed, and the PVA-based resin layer is made into a polarizing element. In this embodiment, stretching typically includes immersing a laminate in a boric acid aqueous solution to perform stretching. Further, if necessary, the stretching may include: performing stretching in the air at a high temperature (for example, 95 ° C. or higher) before the stretching in the boric acid aqueous solution. The obtained resin substrate / polarizing element laminated body can be used directly (that is, the resin substrate can be used as a protective layer of the polarizing element), or the resin substrate can be peeled from the resin substrate / polarizing element laminated body. Any appropriate protective layer can be laminated on the peeling surface according to the purpose. The details of the method of manufacturing such a polarizing element are described in, for example, Japanese Patent Laid-Open No. 2002-73580. The entire description of this publication is incorporated herein by reference. The thickness of the polarizing element is preferably 25 μm or less, more preferably 1 μm to 15 μm, still more preferably 2 μm to 10 μm, and even more preferably 3 μm to 8 μm. When the thickness of the polarizing element is within such a range, curling during heating can be well suppressed, and good appearance durability during heating can be obtained. The polarizing element preferably exhibits absorption dichroism at any wavelength of 380 nm to 780 nm. The individual body transmittance of the polarizing element is preferably 42.0% to 46.0%, and more preferably 44.5% to 46.0%. The degree of polarization of the polarizing element is preferably 97.0% or more, more preferably 99.0% or more, and even more preferably 99.9% or more. C. Support As described above, the support has a pattern structure including a portion that crosses the absorption axis of the polarizing element in a plan view. The support preferably has at least one structure selected from the group consisting of a honeycomb structure, a truss structure, a frame structure, a strip structure, and a circular structure. The support is more preferably a honeycomb structure, a truss structure, or a round structure, and particularly preferably a honeycomb structure or a round structure. The reason is that when the support has a honeycomb structure, a truss structure, or a circular structure, when the polarizing film is stressed in one direction, the stress can be dispersed in a direction different from the direction, and as a result, cracks in the polarizing element can be suppressed . The support is preferably transparent and substantially optically isotropic. In this specification, "substantially optically isotropic" means that the phase difference value is small to such an extent that it does not substantially affect the optical characteristics of the polarizing film. For example, the in-plane retardation Re (550) and the thickness direction retardation Rth (550) of the support are preferably 20 nm or less, and more preferably 10 nm or less. Here, "Re (550)" is an in-plane phase difference measured with light having a wavelength of 550 nm at 23 ° C. Re (550) is calculated by the formula: Re (550) = (nx-ny) × d when the thickness of the layer (film) is d (nm). "Rth (550)" is the phase difference in the thickness direction measured by light with a wavelength of 550 nm at 23 ° C. Rth (550) is determined by the formula: Rth (550) = (nx−nz) × d when the thickness of the layer (film) is d (nm). Furthermore, "nx" refers to the refractive index in the direction where the refractive index in the plane reaches the maximum (that is, the direction of the late phase axis), and "ny" refers to the direction in the plane that is orthogonal to the late phase axis (the direction of the phase axis). Refractive index, "nz" is the refractive index in the thickness direction. As described above, the thickness of the support is preferably 1 μm to 15 μm, and more preferably 3 μm to 8 μm. The ratio (t2 / t1) of the thickness (t2) of the support to the thickness (t1) of the polarizing element is preferably 0.13 to 5.00, more preferably 0.38 to 4.00, and still more preferably 0.63 to 3.33. The compression elastic modulus of the support at 23 ° C is preferably 0.01 GPa to 8.0 GPa, and more preferably 0.02 GPa to 6.0 GPa. Thereby, the progress of cracks in the polarizing element can be suppressed, and the workability and flexibility of the polarizing film can be improved. The support can be formed by any appropriate material and method as long as it satisfies the above-mentioned structure and has sufficient adhesion with the polarizing element. The adhesiveness of the support to the polarizing element can be evaluated in accordance with the checkerboard peeling test of JIS K5400. The adhesiveness of the support to the polarizing element is preferably 0 in the checkerboard peeling test (the number of checkerboards: 100). In one embodiment, a support having a pattern structure can be formed by forming a pattern of a resin material or a coating solution containing a resin material on the surface of a polarizing element and hardening (or curing) the resin material. In another embodiment, the support may be formed by evaporating SiO on the surface of the polarizing element. 2 And other inorganic oxides. As the resin material, any appropriate material can be used as long as the effects of the present invention can be obtained. Examples of the resin material include polyester resins, polyether resins, polycarbonate resins, polyurethane resins, silicone resins, polyamide resins, and polyimide resins. Resin, PVA resin, acrylic resin, epoxy resin, fluorine resin. These can be used individually or in combination (for example, mixing and copolymerization). The method of forming the pattern of the resin material or the coating liquid on the surface of the polarizing element is not particularly limited. Examples of the method include printing, photolithography, inkjet, nozzles, and die coating. The pattern of the resin material or the coating liquid is preferably formed by printing. Examples of a method for printing the coating liquid into a pattern include a letterpress printing method, a direct gravure printing method, a gravure printing method, a lithographic printing method, and a stencil printing method. In addition to the resin material described above, the coating liquid may contain any appropriate other components within a range that does not impair the effects of the present invention. Examples of such other components include resin components other than the above-mentioned resin materials as main components, tackifiers, inorganic fillers, organic fillers, metal powders, pigments, foils, softeners, anti-aging agents, Conductive agent, ultraviolet absorber, antioxidant, light stabilizer, surface lubricant, leveling agent, preservative, heat stabilizer, polymerization inhibitor, lubricant, solvent, catalyst, etc. The conditions for hardening (or curing) the resin material (coating liquid) can be appropriately set depending on the type of the resin material, the composition of the composition, and the like. For example, the resin material can be hardened (or cured) by drying, active energy ray hardening, thermal hardening, or the like. D. Embedding resin layer The embedding resin layer embeds the support formed on one surface of the polarizing element as described above. The thickness of the embedding resin layer is thicker than the thickness of the support, preferably 3 μm to 150 μm, and more preferably 5 μm to 100 μm. The embedding resin layer may be any appropriate functional layer formed according to the characteristics required for the polarizing film. Examples of the functional layer include a hard coat layer, an adhesive layer, and a transparent optical adhesive layer. When the embedding resin layer is a hard coating layer, its thickness is, for example, 5 μm to 15 μm. When the embedding resin layer is an adhesive layer, its thickness is, for example, 5 μm to 30 μm. When the layer is a transparent optical adhesive layer, its thickness is, for example, 25 μm to 125 μm. The embedding resin layer is preferably transparent and substantially optically isotropic. The embedding resin layer can be formed by any appropriate material and method as long as it has sufficient adhesion to the polarizing element and the support. In one embodiment, the embedding resin layer may be formed using a resin material different from that of the support. The embedding resin layer can be formed by forming a resin layer on the surface of the polarizing element to embed the support and hardening the resin layer. The method for forming the resin layer on the surface of the polarizing element is not particularly limited. In one embodiment, a resin layer can be formed by applying a coating liquid containing a resin material onto the surface of a polarizing element. As a coating method, any appropriate coating method can be used. Specific examples include a curtain coating method, a dip coating method, a spin coating method, a printing coating method, a spray coating method, a slit coating method, a roll coating method, a swash plate coating method, A doctor blade coating method, a gravure coating method, and a bar coating method. The curing conditions can be appropriately set according to the type of the resin material used, the composition of the composition, and the like. In addition to the resin material described above, the coating liquid may contain any appropriate other components within a range that does not impair the effects of the present invention. Examples of such other components include resin components other than the above-mentioned resin materials as main components, tackifiers, inorganic fillers, organic fillers, metal powders, pigments, foils, softeners, anti-aging agents, Conductive agent, ultraviolet absorber, antioxidant, light stabilizer, surface lubricant, leveling agent, preservative, heat stabilizer, polymerization inhibitor, lubricant, solvent, catalyst, etc. E. The second support is as described above. When the pattern structure of the first support is the same as the pattern structure of the second support, it is preferable that the area of the second support overlaps with the first support in a plan view. Smaller way to configure. The structure and function of the second support are as described in the item C of the support (the first support). F. Other optical films and polarizing films for image display devices can be used in the form of an optical laminated body in which other optical films such as a retardation film are laminated. The polarizing film and the optical laminate described in the items A to E can be applied to an image display device such as a liquid crystal display device. Therefore, the present invention includes an image display device using the above-mentioned polarizing film. An image display device according to an embodiment of the present invention includes the polarizing film described in the above items A to E. [Examples] The present invention will be described below with reference to examples, but the present invention is not limited to the examples shown below. In addition, parts and% in each case are a basis of weight. Below, the room temperature storage conditions without special regulations are 23 ° C and 65% RH. 1. Production of Polarizing Element <Manufacturing Example 1> Amorphous interphthalic acid copolymerized polyethylene terephthalate (IPA copolymerized PET) film (thickness) having a water absorption of 0.75% and a Tg of 75 ° C : 100 μm) Corona treatment is performed on one side of the substrate, and the corona-treated surface is coated at 25 ° C with polyvinyl alcohol (polymerization degree 4200, saponification degree 99.2 mol) at a ratio of 9: 1. %) And acetamidine modified PVA (degree of polymerization is 1200, acetamidine modification degree is 4.6%, saponification degree is above 99.0 mol%, manufactured by Nippon Synthetic Chemical Industry Co., Ltd., trade name "GOHSEFIMER Z200 ”) And dried to form a PVA-based resin layer having a thickness of 11 μm, and a laminated body was produced. The obtained laminated body was subjected to free-end uniaxial stretching (air-assisted stretching treatment) to 2.0 times in a longitudinal direction (length direction) between rollers having different peripheral speeds in an oven at 120 ° C. Next, the laminated body was immersed in an insoluble bath (aqueous boric acid solution prepared by mixing 4 parts by weight of boric acid with 100 parts by weight of water) at a liquid temperature of 30 ° C (insoluble treatment). Then, immerse in a dyeing bath having a liquid temperature of 30 ° C. while adjusting the iodine concentration and the immersion time with the polarizer as a specific transmittance. In this production example, 0.2 parts by weight of iodine was mixed with 100 parts by weight of water, and 1.0 part by weight of potassium iodide was prepared, and the solution was immersed for 60 seconds (dyeing treatment). Then, immerse for 30 seconds (crosslinking treatment) in a crosslinking bath (aqueous boric acid solution prepared by mixing 3 parts by weight of potassium iodide and 3 parts by weight of boric acid with 100 parts by weight of water) at a liquid temperature of 30 ° C. Thereafter, the laminated body was immersed in a boric acid aqueous solution (aqueous solution obtained by mixing 4 parts by weight of boric acid and 5 parts by weight of potassium iodide at 100 parts by weight of water) at a liquid temperature of 70 ° C, and longitudinally between rollers having different peripheral speeds (Longitudinal direction) Uniaxial stretching is performed until the total stretching ratio becomes 5.5 times (underwater stretching treatment). Thereafter, the laminated body was immersed in a washing bath (aqueous solution obtained by mixing 4 parts by weight of potassium iodide with 100 parts by weight of water) at a liquid temperature of 30 ° C (washing treatment). Thus, a polarizing element laminate A containing a polarizing element having a thickness of 5 μm was obtained. <Manufacturing example 2> Except having changed the thickness of the PVA-type resin layer after apply | coating and drying to 15 micrometers, it carried out similarly to the manufacture example 1, and produced the polarizing element laminated body B containing the polarizing element with a thickness of 7 micrometers. 2. Preparation of Support Forming Material <Manufacturing Example 3> N- (2-hydroxyethyl) acrylamide was added to 100 parts of acrylic urethane oligomer (manufactured by Nippon Synthetic Chemical Co., Ltd., "violet UV7560B"). (Manufactured by Kohjin Co., Ltd., "HEAA") 20 parts, photoinitiator (manufactured by BASF company, "IRUGACURE 907") 3 parts, and using methyl isobutyl ketone as a solvent to obtain a coating having a specified film thickness In this way, the coating agent A is used to adjust the solid component concentration. <Manufacturing Example 4> N- (2-hydroxyethyl) acrylamide (manufactured by Kohjin Co., Ltd., "HEAA") was added to 100 parts of acrylic urethane oligomer (manufactured by Nippon Synthetic Chemical Co., Ltd., "violet UV7000B"). ) 20 parts, 3 parts of photoinitiator ("IRUGACURE 907" manufactured by BASF Corporation), using methyl isobutyl ketone as a solvent to obtain a solid component concentration that can be adjusted so as to be coated at a specified film thickness Coating agent B. <Manufacturing Example 5> N- (2-hydroxyethyl) acrylamide (manufactured by Kohjin Co., Ltd., "HEAA") was added to 100 parts of acrylic urethane oligomer (manufactured by Nippon Synthetic Chemical Co., Ltd., "violet UV3520TL"). ) 20 parts, 3 parts of photoinitiator ("IRUGACURE 907" manufactured by BASF Corporation), using methyl isobutyl ketone as a solvent to obtain a solid component concentration that can be adjusted so as to be coated at a specified film thickness Coating agent C. <Manufacturing Example 6> N- (2-hydroxyethyl) acrylamide (manufactured by Kohjin Co., Ltd., "HEAA") was added to 100 parts of acrylic urethane oligomer (manufactured by Nippon Synthetic Chemical Co., Ltd., "violet UV6640B"). ) 20 parts, 3 parts of photoinitiator ("IRUGACURE 907" manufactured by BASF Corporation), using methyl isobutyl ketone as a solvent to obtain a solid component concentration that can be adjusted so as to be coated at a specified film thickness Coating D. <Manufacturing example 7> Use of UV-curable screen ink (manufactured by Imperial Ink Co., Ltd., "UV FIL screen ink 611 white" (solid content: 76%)), diluent (Imperial Ink Co., Ltd. limited) The company manufactured "RE-806 reducer" to obtain a coating agent E that can adjust the concentration of the solid content so that it can be applied at a specified film thickness. <Production Example 8> Acrylic urethane oligomer (Japan Made by Synthetic Chemical Co., Ltd., "Purple UV1700") 100 parts was added with 20 parts of N- (2-hydroxyethyl) acrylamide (manufactured by Kohjin Co., Ltd., "HEAA"), light initiator (manufactured by BASF company, "IRUGACURE 907" ) 3 parts, using methyl isobutyl ketone as a solvent, to obtain a coating agent F that can adjust the concentration of the solid content in such a manner that the coating can be applied at a specified film thickness. 3. Production of a release film with an adhesive layer Example 9 > To a reaction vessel provided with a cooling tube, a nitrogen introduction tube, a thermometer, and a stirring device, 100 parts of butyl acrylate, 3 parts of acrylic acid, 0.1 part of 2-hydroxyethyl acrylate, and 2, 2 were added together with ethyl acetate. 0.3-Azobisisobutyronitrile Then, the solution was stirred while blowing nitrogen into the solution, and reacted at 55 ° C for 8 hours to obtain a solution containing an acrylic polymer having a weight-average molecular weight of 2.2 million. Furthermore, a solution containing the acrylic polymer was added to the solution. Ethyl acetate was added to the acrylic polymer solution to adjust the solid content concentration to 30%. 0.5 part of the cross-linking agent was sequentially prepared with respect to 100 parts of the solid content of the acrylic polymer solution. A cross-linking agent containing a compound having an isocyanate group as a main component (manufactured by Japan Polyurethane Co., Ltd., trade name "Coronate L"), and 0.075 parts of γ-glycidoxypropyltrimethoxymethyl as a silane coupling agent Silane (manufactured by Shin-Etsu Chemical Industry Co., Ltd. under the trade name "KMB-403") was used to prepare an adhesive. A release sheet containing a polyethylene terephthalate film (thickness: 38 μm) ( The surface of the film is coated with the above-mentioned adhesive so that the thickness after drying becomes 25 μm, and dried to prepare a release film with an adhesive layer. <Example 1> 1. Production of a polarizing film The coating agent A was coated in a honeycomb shape on the surface of the polarizing element side of the polarizing element laminated body A so that the thickness after curing became 7 μm, and dried at 60 ° C. for 120 seconds. The coating agent was applied using a precision desktop printer (NEWONG Precision Industry Co., Ltd., "DP-320") and a screen plate (shaped mesh # 500, wire diameter 18) formed into a honeycomb pattern. (μm, thickness is 38 μm, emulsion thickness is 10 μm). Thereafter, the accumulated light amount was 500 mJ / cm by irradiation with a high-pressure mercury lamp. 2 Ultraviolet light hardens the coating agent to form a honeycomb structure (line width: 1.0 mm, length of one side of a regular hexagon: 4.0 mm) (first support). Next, a surface protection film (manufactured by Nitto Denko Corporation, "RP301") was attached to the above-mentioned support, and the non-crystalline PET base material of the above-mentioned polarizing element laminated body A was peeled off. Thereafter, the surface protective film is peeled off to produce a polarizing film 1 having a polarizing element and a first support. 2. Production of polarizing film with adhesive layer The polarizing film side of the above-mentioned polarizing film 1 is bonded to the surface of the adhesive layer side of the above-mentioned release film with adhesive layer to produce a polarizing film with an adhesive layer 1. <Example 2> Except having used the coating agent B as a coating agent, it carried out similarly to Example 1, and produced the polarizing film 2 and the polarizing film 2 with an adhesive layer. <Example 3> Except having used the coating agent C as a coating agent, it carried out similarly to Example 1, and produced the polarizing film 3 and the polarizing film 3 with an adhesive layer. <Example 4> A polarizing film 4 and a polarizing film 4 with an adhesive layer were produced in the same manner as in Example 1 except that the coating agent D was used as the coating agent. <Example 5> A polarizing film 5 and a polarizing film 5 with an adhesive layer were produced in the same manner as in Example 1 except that the coating agent E was used as the coating agent. <Example 6> 1. Production of polarizing film The coating agent E was coated in a honeycomb shape on the surface of the polarizing element side of the polarizing element laminated body A so that the thickness after curing was 7 μm. Allow to dry for 120 seconds. The coating agent was applied using a precision desktop printer ("DP-320" manufactured by NEWLONG PRECISION INDUSTRY CO., LTD.) And a stencil formed with a honeycomb pattern (mesh size # 500, wire diameter 18 μm, thickness is 38 μm, and emulsion thickness is 10 μm). Thereafter, the accumulated light amount was 500 mJ / cm by irradiation with a high-pressure mercury lamp. 2 Ultraviolet light hardens the coating agent to form a honeycomb structure (line width: 1.0 mm, length of one side of a regular hexagon: 4.0 mm) (first support). Next, a surface protection film (manufactured by Nitto Denko Corporation, "RP301") was attached to the above-mentioned support, and the non-crystalline PET base material of the above-mentioned polarizing element laminated body A was peeled off. Next, a honeycomb structure was formed on the surface of the polarizing element on the side opposite to the surface on which the first support was formed using the coating agent E in the same manner as the first support in a plan view (wire). Width: 1.0 mm, the length of one side of a regular hexagon: 4.0 mm). Thereafter, the surface protective film is peeled off to produce a polarizing film 6 having a polarizing element and first and second supports. 2. Production of polarizing film with adhesive layer The surface of the second support side of the above-mentioned polarizing film 6 is adhered to the surface of the adhesive layer side of the release film with an adhesive layer, and an adhesive layer is produced. Polarizing film 6. <Example 7> A polarizing film 7 and a polarizing film 7 with an adhesive layer were produced in the same manner as in Example 6 except that the thickness of the first and second supports was 3 μm. <Example 8> A polarizing film 8 and a polarizing film 8 with an adhesive layer were produced in the same manner as in Example 6 except that the thickness of the first and second supports was 5 μm. <Example 9> A polarizing film 9 and a polarizing film 9 with an adhesive layer were produced in the same manner as in Example 6 except that the thickness of the first and second supports was 14 μm. <Example 10> The vertex of the regular hexagon of the second support and the center of the regular hexagon of the first support overlap when viewed from above (the positions of the first support and the second support are staggered from each other when viewed from above) ) A polarizing film 10 and a polarizing film 10 with an adhesive layer were produced in the same manner as in Example 6 except that a second support was formed. <Example 11> A polarizing film 11 and a polarizing film 11 with an adhesive layer were produced in the same manner as in Example 10, except that the polarizing element laminated body B was used as the polarizing element laminated body. <Example 12> A polarizing film 12 and a polarizing film 12 with an adhesive layer were produced in the same manner as in Example 10 except that the line width of the honeycomb structure of the first and second supports was 1.8 mm. <Example 13> A polarized light was produced in the same manner as in Example 10 except that the line width of the honeycomb structure of the first and second supports was 0.8 mm, and the length of one side of the regular hexagon was 3.0 mm. Film 13 and polarizing film 13 with an adhesive layer. <Example 14> A polarized light was produced in the same manner as in Example 10 except that the line width of the honeycomb structure of the first and second supports was set to 0.5 mm, and the length of one side of the regular hexagon was set to 2.0 mm. Film 14 and polarizing film 14 with an adhesive layer. <Example 15> A polarized light was produced in the same manner as in Example 10 except that the line width of the honeycomb structure of the first and second supports was set to 1.5 mm, and the length of one side of the regular hexagon was set to 2 mm. Film 15 and polarizing film 15 with an adhesive layer. <Example 16> A stencil patterned mesh (# 500 mesh size, wire diameter of 18 μm, thickness of 38 μm, and emulsion thickness of 10 μm) was applied to coat the first and second supports. The body is made into a truss structure (line width: 0.6 mm, the length of one side of the triangle is 4.0 mm), and the apex of the triangle of the second support and the center of the triangle of the first support overlap in a plan view (downward view) The polarizer film 16 and the polarizer film 16 with an adhesive layer were produced in the same manner as in Example 10 except that the positions of the first support and the second support were staggered from each other) to form a second support. <Example 17> A polarizing film 17 was produced in the same manner as in Example 16 except that the line width of the truss structure of the first and second supports was set to 0.5 mm, and the length of one side of the triangle was set to 5.5 mm. And a polarizing film 17 with an adhesive layer. <Example 18> A screen plate (mesh size: # 500, wire diameter: 18 μm, thickness: 38 μm, emulsion thickness: 10 μm) was applied to form a frame-shaped pattern, and the first and second coatings were applied. The support is made into a frame structure (line width: 1.0 mm, the length of one side of the square: 4.0 mm), and the apex of the square of the second support and the center of the square of the first support overlap in a plan view (view from above) The polarizer film 18 and the polarizer film 18 with an adhesive layer were produced in the same manner as in Example 10 except that the positions of the first support and the second support were staggered from each other. <Example 19> A polarizing film 19 was produced in the same manner as in Example 18 except that the line width of the frame structure of the first and second supports was 1.3 mm, and the length of one side of the triangle was 3.0 mm. And a polarizing film 19 with an adhesive layer. <Example 20> A screen plate (mesh size # 500, wire diameter 18 μm, thickness 38 μm, emulsion thickness 10 μm) was applied to form a stripe pattern, and the first and second coatings were applied. The support is made into a strip-like structure (line width: 1.0 mm, stripe interval: 4.0 mm) extending in a direction orthogonal to the absorption axis of the polarizing element, and a second is formed so as to overlap the first support in a plan view. Except for the support, a polarizing film 20 and a polarizing film 20 with an adhesive layer were produced in the same manner as in Example 6. <Example 21> A polarizing film 21 and a polarizing film 21 with an adhesive layer were produced in the same manner as in Example 1 except that the coating agent F was used as the coating agent. <Example 22> Except having used the coating agent F as a coating agent, it carried out similarly to Example 10, and produced the polarizing film 22 and the polarizing film 22 with an adhesive layer. <Comparative example 1> 1. Production of polarizing film A surface protective film (manufactured by Nitto Denko Corporation, "RP301") was bonded to the surface of the polarizing element side of the polarizing element laminated body A, and the polarizing element laminated body A The amorphous PET substrate is peeled. Thereafter, the surface protective film is peeled off, thereby producing a polarizing film 23 including a polarizing element. 2. Production of Polarizing Film with Adhesive Layer The polarizing film 23 with an adhesive layer was produced by bonding the side of the adhesive layer side of the release film with an adhesive layer on one side of the polarizing film 23. <Comparative Example 2> Using a wire bar coater, the coating agent E was applied to the entire surface of the polarizing element side of the polarizing element layered body A so that the thickness after curing became 7 μm, and the temperature was 60 ° C, Dry for 120 seconds. After that, the accumulated light amount was 500 mJ / cm by irradiating with a high-pressure mercury lamp. 2 The ultraviolet rays harden the coating agent, and a support (first support) is formed on the entire surface of the polarizer side of the polarizer stack A. Then, a surface protective film (manufactured by Nitto Denko Corporation, "RP301") was attached to the first support, and the amorphous PET base material of the polarizing element laminate A was peeled. Then, using the coating agent E described above, a second support was formed on the surface opposite to the surface on which the first support was formed on the polarizing element under the same conditions as the first support. Thereafter, the surface protective film is peeled off, thereby producing a polarizing film 24 having a polarizing element and first and second supports. 2. Production of polarizing film with adhesive layer The surface of the second support side of the polarizing film 24 is bonded to the surface of the adhesive layer side of the release film with an adhesive layer, and an adhesive layer is produced. Polarizing film 24. <Comparative Example 3> A polarizing film 25 and a polarizing film 25 with an adhesive layer were produced in the same manner as in Comparative Example 2 except that the thickness of the first and second supports was 5 μm. <Comparative Example 4> A polarizing film 26 and an attached adhesive were produced in the same manner as in Example 20, except that the first and second supports had a strip-shaped structure extending in a direction parallel to the absorption axis of the polarizing element. Layer of polarizing film 26. <Comparative Example 5> 1. Production of a polarizing film 40 parts by weight of N-hydroxyethyl acrylamidonium (HEAA), 60 parts by weight of acrylmorpholine (ACMO), and a photoinitiator (manufactured by BASF Co., Ltd. 819 ") 3 parts by weight are mixed to prepare an ultraviolet curing adhesive. The above-mentioned adhesive is coated on the surface of the polarizing element side of the polarizing element laminated body A so that the thickness after curing becomes 1 μm, and the adhesion to the (meth) acrylic resin film having a lactone ring structure is easy. Next, a protective film (thickness: 40 μm) obtained by performing a corona treatment on the treated surface is irradiated with ultraviolet rays as active energy rays to harden the adhesive. In addition, the ultraviolet irradiation was performed using a metal halide lamp (manufactured by Fusion UV Systems, Inc., product name "Light HAMMER10") with a gallium package, a bulb: a V-shaped bulb, and a peak illumination: 1600 mW / cm 2 , The cumulative exposure is 1000 / mJ / cm 2 (Wavelength is 380 to 440 nm)). The ultraviolet irradiance was measured using a spectrophotometer (manufactured by Solatell, product name "Sola-Check System"). Then, the non-crystalline PET base material of the polarizing element laminated body A was peeled off, and a polarizing film 27 having a polarizing element and a protective film was produced. 2. Production of Polarizing Film with Adhesive Layer The polarizing film side of the polarizing film 27 is bonded to the surface of the adhesive layer side of the above-mentioned release film with an adhesive layer to produce a polarizing film with an adhesive layer. 27. <Comparative Example 6> A protective film (thickness: 20 μm) obtained by corona-treating the easily-adhesive surface of a (meth) acrylic resin film having a lactone ring structure was used as a protective film. Example 5 A polarizing film 28 and a polarizing film 28 with an adhesive layer were produced in the same manner. <Evaluation> The polarizing films 1 to 28 were subjected to the following adhesion test, bending resistance test, torsion test, and U-shaped stretch test. The polarizing films 1 to 28 with an adhesive layer were subjected to the following heat shock test. The evaluation results are shown in Table 1. <Adhesion Test> The adhesion of the first support to the polarizing element was measured in accordance with a checkerboard peeling test (number of checkerboards: 100) according to JIS K5400, and evaluated based on the following criteria. ○: The number of peeling of the first support is 0. ×: The number of peeling off of the first support is one or more. <Bending resistance test> A cantilever type softness tester No. 476 manufactured by Yasuda Seiki Co., Ltd. was used. In addition, since the influence of static electricity is excluded in this test, the samples and the like used in the test are destaticized and carried out. The state of the bending resistance test is shown in FIG. 11. The polarizing film was cut into a size of 150 mm (direction of absorption axis) × 50 mm (direction of transmission axis) as a test sample. The above samples were set in such a manner that the top surface was a flat surface (150 mm × 50 mm: the same size as the sample), one end of the long side had a slope of 45 °, and the top surface of a smooth SUS plate 41 with a trapezoidal cross section. The sample was set up with a slope in the direction of the absorption axis. The above sample was slid to the inclined side (1) at a pushing speed of 10 mm / sec. Stop moving the sample where the front end of the sample first makes contact with the bevel (2). Measure the distance L (mm) (3) when the top of the sample is flat. The bending resistance (mm) is a measurement of the shortest straight line distance L (mm) three times for two patterns in which the first surface is the upper side and the second surface is the upper side, respectively, and the arithmetic mean of these is used. When there is a sample that cannot be measured due to deformation or bending of the sample during any one or more measurements, the sample is determined to be impossible to measure. <Torsion test> A surface-type no-load torsion tester (product name: main body TCDM111LH) and a jig (surface-type no-load torsion test jig) manufactured by YUASA SYSTEM Machine Co., Ltd. were used. The state of the torsion test is shown in FIG. 9. The polarizing film was cut into a size of 120 mm (absorption axis direction) × 80 mm (transmission axis direction) as a test sample. After the two short sides of the sample were clamped and fixed by the twisting clips 18 and 19 of the testing machine, when one short side was fixed by the clip 19, the other short side clip 18 was twisted under the following conditions. Twisting speed: 10 rpm Twisting angle: 45 degrees Twisting number: 100 times The state of the sample after the torsional test was evaluated visually and based on the following criteria. When there is a sample that cannot be measured due to deformation or curl of the sample, the sample is determined to be impossible to measure. ○: No cracking or light leakage occurred. No creases remain. △: No cracking or light leakage occurred. But creases remain. ×: Cracking and light leakage occurred. And creases remain. <U-shaped telescopic test> A planar non-loaded U-shaped telescopic tester (product name: main body DLDM111LH) and a jig (surface-shaped no-load U-shaped telescopic test jig) manufactured by YUASA SYSTEM Machine Co., Ltd. were used. The U-shaped stretching test is shown in FIG. 10. The polarizing film was cut into a size of 100 mm (absorption axis direction) × 50 mm (transmission axis direction) as a test sample. After both ends of the sample were fixed to the clamping portions 21 and 22 of the testing machine with double-sided tape (not shown), the single-sided side (the first surface) of the sample was turned inward under the following conditions. A U-shaped expansion and contraction was formed to bend the above sample. The U-shaped expansion and contraction was set so that the bending R (bending radius) became 3 mm, and the sample was bent from a flat state to a folded state. The above-mentioned bending is performed by contacting the two end portions x and y by the action of a clamp, and the other portions of the sample are inserted between the two plate portions without load from the outside by using the plate portions 23 and 24 provided separately. In addition, the above-mentioned bending by expansion and contraction is performed on the other side (second surface) of the rectangular object in a U-shaped expansion and contraction inward in the same manner as described above. Telescopic speed: 30 rpm Bending R: 3 mm Number of telescopic times: 100 times The state of the U-shaped telescopic test sample was evaluated visually based on the following criteria. When there is a sample that cannot be measured due to deformation or curl of the sample, the sample is determined to be impossible to measure. ○: No cracking or light leakage occurred. No creases remain. ×: Cracking or light leakage occurred. Or confirm the crease. <Heat shock test> The polarizing film with an adhesive layer was cut to a size of 50 mm (in the direction of the absorption axis) × 150 mm (in the direction of the transmission axis), and bonded to an alkali glass having a thickness of 0.5 mm for the test. Of samples. This sample was put into an environment subjected to a heat shock of -40 to 85 ° C. for 30 minutes each for 10 times, and then taken out and visually inspected to determine whether a through crack (number of pieces) occurred in the polarizing film with an adhesive layer. After performing this test 5 times, a sample with a large number of cracks was used. Evaluation was performed based on the following. :: No through crack. ○: No through crack. There are cracks. △: There are 1 to 3 through cracks. ×: There are four or more through cracks. <Compression Elastic Modulus of Support> The compression elastic modulus of the support at 23 ° C was measured in the following order. The coating agent A was applied to the surface of the polarizing element layer A of the polarizing element laminated body A so that the thickness after curing became 5 μm, and was dried at 60 ° C. for 120 seconds to prepare a polarizing element laminated layer. On the body A, a sample A containing a layer of hardened material of the coating agent A was formed. Similarly, samples B to F were prepared using the coating agents B to F. Using the samples A to F prepared above, the compressive elastic modulus was measured by the following method, and the value of the compressive elastic modulus obtained by the measurement was used as the compressive elastic modulus of the supports A to F at 23 ° C. The compression modulus was measured using TI900 TriboIndenter (manufactured by Hysitron). The sample obtained above was cut into a size of 10 mm × 10 mm, fixed on a support having a TriboIndenter, and the elastic modulus of compression was measured by the nanoindentation method. At this time, the position is adjusted so that the used indenter is pressed into the vicinity of the center portion of the hardened material. The measurement conditions are shown below. Indenter used: Berkovich (triangular cone) Measurement method: Single indentation measurement Measurement temperature: 23 ° C Indentation depth setting: 100 nm The compression elastic modulus of support A to F at 23 ° C is as follows. Support A (Coating Agent A): 2.57 GPa Support B (Coating Agent B): 0.84 Gpa Support C (Coating Agent C): 0.07 GPa Support D (Coating Agent D): 0.42 GPa Support E (Coating Agent E): 0.02 GPa Support F (Coating Agent F): 5.38 GPa [Table 1] It is clear from Table 1 that the polarizing films with adhesive layers of Comparative Examples 1 to 4 produced a large number of through cracks after the heat shock test, and the polarizing films of Comparative Examples 5 and 6 had higher bending resistance (low flexibility). . In contrast, the polarizing films of Examples 1 to 22 showed good results in any of the tests. [Industrial Applicability] The polarizing film of the present invention is suitable for an image display device such as a liquid crystal display device or an organic EL display device.