本發明揭露一種黏著劑組成物，包括：包括具有羥基或羧基之丙烯酸單體，與含6-18個碳原子的芳香環之另一丙烯酸單體之光聚合性化合物，以及光聚合引發劑。因此當複合偏光板是藉由使用本發明之黏著劑組成物結合偏光器與圖案化延遲層來製造時，偏光器與圖案化延遲層間的黏著性將會顯著改善，而且黏著劑組成物具有優越的耐熱性、耐濕熱性以及改善的3D立體效果。 以下將更詳細的敘述本發明。 ＜黏著劑組成物＞ 本發明之黏著劑組成物可包括一光聚合性化合物。 根據本發明之光聚合性化合物包括具有羥基或羧基之丙烯酸單體，或是具有6-18個碳原子的芳香環之另一丙烯酸單體。 當複合偏光板是藉由使用本發明之黏著劑組成物結合偏光器與圖案化延遲層來製造時，該具有羥基或羧基之丙烯酸單體，可顯著地改善偏光器及圖案化延遲層之間的黏著性。此結果之原因可被認為是因為偏光器表面上的極性基，與圖案化延遲層的液晶塗層中包含的另一極性基連結形成氫鍵。 同樣地，上述具有芳香環之丙烯酸單體也能夠顯著改善偏光器與圖案化延遲層間的黏著力。此結果之原因可被認為是因為上述芳香環與一苯環結合而進行(conduct)π鍵交互作用。該苯環出現於圖案化延遲層的液晶塗層中的反應型液晶單體。此種改良的黏著性可提高耐熱性以及耐濕熱性。 另外，由於具有芳香環之丙烯酸單體具有較佳耐熱水性，因此，使用本發明之黏著劑組成物之複合偏光板，即使暴露於控管或運輸時因結露而產生的溼氣中，也可不發生剝離。而耐熱水特性的改善，則是因為具有芳香環之丙烯酸單體通常具有較低的親水性，因而抑制溼氣滲透進入偏光器與保護膜間的空隙。 根據本發明之具有羥基之丙烯酸單體並無特定限制，舉例來說，可包含以下列式1所表示之單體： [式1](其中R1
為氫原子或甲基；X為氧原子或是–NH-； R2
為直鏈或支鏈的亞烷基，其含有1-6個碳原子，並可被具有4-8個碳原子的環烯烴基斷開。) 具有羥基之丙烯酸單體可包括例如：2-羥基乙酯(甲基)丙烯酸、2-羥基丙酯(甲基)丙烯酸、3-羥基丙酯(甲基)丙烯酸、4-羥基丁酯(甲基)丙烯酸、(4-(羥甲基)環己烷)甲酯(甲基)丙烯酸、N-(2-羥乙基)(甲基)丙烯酸、N-(羥甲基)丙烯酰胺，以及諸如此類，但不限於此。此些可單獨使用或以其二者或更多者的組合使用。 根據本發明之具有羧基的丙烯酸單體，並無特定限制，但可包括例如下述式2及3所表示單體之至少一者： [式2](其中R1
為氫原子或甲基) [式3](其中R1
為氫原子或甲基；X為氧原子或–NH-，R2
為具有1-6個碳原子的直鍵或支鍵的亞烷基，或是具有5-10個碳原子的環烯基，如果R2
為該亞烷基時，則其可被氧原子、酯基或含5-10個碳原子的環烯基斷開) 具有羧基之丙烯酸單體可包括例如：(甲基)丙烯酸、3-(丙烯酰氧)丙酸、4-(2-(丙烯酰氧)乙氧基-4-丁酮酸、3-((2-(丙烯酰氧)乙氧基)羰基)環己烷羧酸、4-(2-丙烯酰胺乙氧基)-4-丁酮酸，或是諸如此類，但不限於此。此些可單獨使用或以二者或更多的組合使用。 具有6-18個碳原子的芳香環之丙烯酸單體並無特定限制。因其具有的任一芳香環，可與圖案化延遲層的液晶分子內包含的苯環連結而進行π鍵交互作用。然而，丙烯酸單體較佳的是具有一苯環，較佳地用於大幅減少因空間障礙導致的排斥。例如下面式4所示單體： [式4](其中R1
為氫原子或甲基，X為氧原子或–NH-，R2
為具有1-6個碳原子的烷基之苯烷基、苯基或是萘基；R2
可被羥基、羧基或含1-6個碳原子之直鏈或支鏈的烷基所取代或不被取代；若R2
為苯烷基，則其可被氧原子、酯基或具有5-10個碳原子的環烯基斷開。) 具有6-18個碳原子的芳香基之丙烯酸單體可包括例如：苯基(甲基)丙烯酸酯、苄基(甲基)丙烯酸酯、萘基(甲基)丙烯酸酯、苯氧基乙基(甲基)丙烯酸酯、苯乙基(甲基)丙烯酸酯，或是諸如此類，但不限於此。此些可單獨使用或以二者或更多的組合使用。 由於本發明之黏著劑組成物具有較低的玻璃轉換溫度，因此，若黏著劑組成物用於結合偏光器與圖案化延遲層時，即使長時間暴露在濕熱環境下，也能夠減少因偏光器的收縮應力造成的圖案化延遲層的收縮。例如，若暴露於60℃250小時，圖案化延遲層可能包含0.13%或更小之單元圖案間隔變化。因此能夠避免3D立體效果變差的問題。 黏著層組成物的玻璃轉換溫度並未特別限制，但可為30℃或更低。在上述範圍內如上述抑制收縮的效果可為極佳的。從改善耐熱性以及耐濕熱性的觀點來看，使用本發明之黏著劑組成物來結合偏光器及圖案化延遲層時，即便是暴露濕熱環境中，在玻璃轉換溫度較佳範圍從0至30℃時，仍能避免剝離或是推力現象。 具有羥基或羧基之丙烯酸單體與具有6-18個碳原子的芳香環之丙烯酸單體的含量比(重量)並不特別設限，只要其在可達上述效能之範圍內即可，例如重量範圍可為1：9至9：1。當含量比在上述範圍內時，偏光器與圖案化延遲層間的黏著力可為最大。 由防熱水性的改善方面來看，具有6-18個碳原子的芳香環之丙烯酸單體可被包括於光聚合性化合物之總重量的60至90重量%中。 本發明之黏著劑組成物可進一步地包含光聚合引發劑。 此處使用之光聚合引發劑並無特別限制，但可為一自由基光聚合引發劑，其包括例如苯乙酮、二苯基酮、噻吨酮、苯偶姻或苯偶姻烷基醚類物質所組成之群組之至少其中之一。此些可單獨使用或以其二者或更多者的組合使用。 更特別是，光聚合引發劑可包括例如：苯乙酮、羥基二甲基苯乙酮、二甲胺基苯乙酮、二甲氧基-2-苯基苯乙酮、3-甲基苯乙酮、2,2-二甲氧基-2-苯基苯乙酮、2,2-二乙氧基-2-苯基苯乙酮、4-氯苯乙酮、4,4-二甲氧基苯乙酮、2-羥基-2-甲基-1-苯基-1-丙酮、4-羥基環苯基酮、1-羥基-環己基苯基酮、2-甲基-1-[4-(甲硫基)苯基]-2-嗎啉基-1-丙酮、4-(2-羥基乙氧基)苯基-2(羥基-2-丙基)酮、二苯基甲酮、4-苯基二苯甲酮(p-phenylbenzophenone)、4,4-二氨基二苯甲酮、4,4-二乙胺基苯甲酮、二氯苯甲酮、蒽醌、2-甲基蒽醌、2-乙基蒽醌、2-叔丁基蒽醌、2-氨基蒽醌、2-甲基噻噸酮、2-乙基噻噸酮、2-氯噻噸酮、2-4-二甲基噻噸酮、2-4-二乙基噻噸酮、苯偶姻、苯偶姻甲醚、苯偶姻乙醚、苯偶姻異丙醚、苯偶姻異丁醚、苄基丙酮、二苯基酮、苯甲基二甲基缩酮、苯偶姻二甲基缩酮、4-二甲氨基苯甲酸酯(p-dimethylaminobenzoic acid ester)、2,4,6-三甲苯基二苯基磷氧、芴、三苯胺、咔唑，或是諸如此類，但不限於此。 市面上可購買到的產品可包括例如SIBA公司的darocur 1173、darocur 4265、darocur BP、darocur TPO、darocur MBF、irgacure 184、irgacure 500、irgacure 2959、irgacure 754、irgacure 651、irgacure 369、irgacure 907、irgacure 1300、irgacure 819、irgacure 2022、irgacure 819DW、irgacure 2100、irgacure 784、irgacure 250或諸如此類。此些可單獨使用或以其二者或更多者的組合使用。 光聚合性引發劑之成分不特定限制，但舉例來說，相對於光聚合性組成物之100重量份，其範圍可為0.1至10重量份，較佳為0.1至5重量份。若光聚合性引發劑少於0.1重量百分比，固化率就會減少且固化過程可能會不足。另一方面，當光聚合性引發劑超過10重量百分比時，黏著層的耐用性可能會減弱。 可選地，本發明之黏著劑組成物可進一步地包括多官能丙烯酸單體來改善耐用性。 而此多官能丙烯酸單體並無特定限制，但可包括例如：例如三羥甲基丙烷三(甲基)丙烯酸酯、季戊四醇三(甲基)丙烯酸酯、雙季戊四醇三(甲基)丙烯酸酯、丙酸改性三羥甲基丙烷三(甲基)丙烯酸酯、環氧丙烷改性三(甲基)丙烯酸酯、三(2-羥乙基)異氰尿酸三(甲基)丙烯酸酯、三(甲基)丙烯酰氧乙基異氰尿酸酯、甘油三(甲基)丙烯酸酯等之三官能單體；例如雙甘油四(甲基)丙烯酸酯、季戊四醇(甲基)丙烯酸酯、雙季戊四醇(甲基)丙烯酸酯、四羥甲基丙烷四(甲基)丙烯酸酯等之四官能單體；例如二季戊四醇五(甲基)丙烯酸酯、丙酸改性二季戊四醇五(甲基)丙烯酸酯等之五官能單體；例如二季戊四醇六(甲基)丙烯酸酯、己內酯改性二季戊四醇六(甲基)丙烯酸酯、異氰酸酯改性胺甲酸乙酯六(甲基)丙烯酸酯等之六官能單體。此些可單獨使用或以其二者或更多者的組合使用。 多官能丙烯酸單體之成分無特別限制但舉例來說對於光聚合性化合物之100重量份，其範圍可為0.1至10之重量份。若多官能丙烯酸單體被包括在上述範圍內，則改善耐用性的效果可明顯增加。 複合偏光板 進一步地，本發明提供了一複合偏光板，其使用了上述的黏著劑組成物來製造。 本發明之複合偏光板可包括偏光器，以及藉由黏著劑組成物貼附至偏光器一面的圖案化延遲層。 本發明之複合偏光板可具有高黏著性，因為使用了上述黏著劑組成物使偏光器與圖案化延遲層結合。在此方面，如上所述，黏著劑組成物層可於在與圖案化延遲層形成氫鍵時，也與偏光器形成氫鍵，以使π鍵交互作用發生。 偏光器並無特別限制，顯示器領域通常使用且可偏振入射光者即可。例如，用碘或二色性染料染色以聚乙烯醇(PVA)為基礎的薄膜，然後往預定方向拉伸該染色薄膜製作之產品亦可採用。亦可在貼上圖案化延遲層之表面的對面的一面貼附上具有保護薄膜功能之附加性薄膜。 圖案化延遲層之配置並無特別限制，但可包括任何相關技術領域通常使用之配置。例如，一基板，一配向薄膜以及一液晶塗膜層可以此順序層壓以形成一疊層結構。或者是該結構中也可不包括配向薄膜。 圖案化延遲層可被貼上並使液晶塗層面向偏光器。 基板並無特別限制，只要其是以具有良好特性如透明度、機械強度、熱穩定性、濕氣遮蔽性、延遲一致性、等向性、以及其他類似特性者的物質製成即可。例如可使用選自由下列所組成的群組的至少一者所製成的物質：聚烯烴樹脂、聚酯樹脂、纖維素樹脂、聚碳酸脂樹脂、丙烯酸樹脂、苯乙烯樹脂、氯乙烯樹脂、氨基樹脂、酰亞胺樹脂、聚醚碸樹脂、碸樹脂、聚醚醚碸樹脂、聚醚醚酮樹脂、聚苯硫醚樹脂、乙烯醇樹脂、偏氯乙烯樹脂、縮丁醛樹脂、烯丙基樹脂、聚甲醛樹脂及環氧樹脂等。 當圖案化延遲層包括配向層時，可藉由塗上組成物以形成配向層至基板以提供配向特性，然後再圖案化塗膜，使其具有不同配向方向，其中配向層通常使用於相關領域。 賦予配向特性的方法可包括例如：刷磨、光配向等等。且圖案化方法可包括用光罩進行多重曝光程序。然而，賦予配向特性及/或圖案化之方法並不特別限定為此。 用於曝光之光線並無特別限制，但可包括例如於預定角度的偏振紫外光照射(radiation)、離子束或電漿束照射，或是照射(irradiation)，或是其他類似方法。舉例來說，較佳是使用偏振紫外光照射。 液晶層可藉由塗上組成物至配向層以形成包括反應型液晶單體(RM)的液晶塗層，然後再使其交聯，液晶塗層通常使用於相關領域。 RM並無特殊限制，但可包括相關領域中一般使用的任何單體，且較佳為具有苯環的單體。 當圖案化延遲層不包括配向層時，延遲薄膜可藉由在無配向層的基板塗上組成物以形成液晶塗層，然後，對其進行曝光，以同時進行圖案化以及配向。 於此例子中，為了引導配向，形成液晶塗層用之組成物可進一步包括可能由偏振紫外光配向之任何化合物，例如線性光聚合性聚合物。 若圖案化延遲層不包括配向層，則相較於包括配向層的例子，可得到具有較小厚度之薄膜顯示器。 本發明之複合偏光板，即使當偏光板長期暴露於濕熱環境中時，尚能顯示圖案化延遲層受由於偏光器收縮的應力引起的收縮為受到控制的。例如，如果暴露於60℃250小時，圖案化延遲層之單位圖案間隔可包含0.13%或更低之變化。而結果即為可避免降低3D立體效果。 本發明之複合偏光板使用上述黏著劑組成物，其在偏光器與圖案化延遲層間具有良好黏著性。例如，施於偏光器與圖案化延遲層間的剝離強度可為1 N/25mm或更大，而較佳的範圍為1.5至5 N/25mm或更大。 影像顯示裝置 本發明並進一步提供包括上述複合偏光板之影像顯示裝置。 影像顯示裝置並無特別限制，但可包括例如獲得立體影像用液晶顯示裝置或是穿透反射式液晶顯示裝置、電漿顯示裝置、有機EL顯示裝置、或是其他類似者。 本發明之複合偏光板可被提供於一般層壓偏光板與圖案化延遲層時的一位置。 以下將敘述較佳實施例以便參照實例更具體的理解本發明。顯然對相關領域技術人士而言，此種實施例是為說明的目的而提供，而不限制所附的申請專利範圍，在不脫離本發明之範疇及精神下，各種修改和變化均是可能的，而此種修改和變化都適當地包括在本發明中由所附的申請專利範圍所定義內。 實例 實例以及比較性實例 黏著劑組成物依照下列表1所列之不同構成之組成物及含量製備。
實驗例 (1)測量玻璃轉換溫度 在實例以及比較性實例中所製備的各個黏著劑組成物，將其導入兩張經過矽酮離型程序處理的PET薄膜之間，然後用滾輪層壓機使其黏附。之後，結合起來的製品使用紫外線曝光裝置(FUSION公司)經紫外線照射，以313 nm波長在2000 mJ/cm2
光量照射紫外光以固化黏著劑組成物。 去除離型膜後，使用TGA分析儀器(Q50，TA instruments公司)將已固化的黏著層進行玻璃轉換溫度之測量。 (2)剝離強度之測量 聚乙烯醇偏光器包括圖案化延遲層(MPR 32，DNP公司)及貼附於其上之三乙醯纖維素保護薄膜，被放置於與液晶塗層接觸且使用各實例及比較性實例中藉滾輪層壓機製備之黏著劑組成物貼附於其上。為了評估，層壓片的尾部不塗佈黏著劑組成物。 然後，使用紫外線曝光裝置(FUSION公司)執行紫外線照射，用以照射313 nm波長2000 mJ/cm2
光量之紫外線，以固化黏著劑組成物。 在切割上述製作之此種複合偏光板，使其成為具有25 mm寬度之樣品後。接著依照剝離強度測量方法，使樣品在180度剝離方向承受剝離率300 mm/min之剝離。 (3) 評估耐熱性及耐濕熱性 根據上述實驗例(2)所述的相同程序製得一複合偏光板。塗佈丙烯酸結合劑至一保護薄膜上並對其進行固化。然後將固化後的薄膜貼附至鈉玻璃上並進行高壓蒸氣滅菌法處理。 其次，在分別放置被處理薄膜於80℃500小時，以及60度90% RH500小時後，調查偏光器與液晶塗層之間的貼附面是否有氣泡產生或是剝離發生。調查的結果將會被用來根據下列評估標準來評估耐熱性及耐濕熱性。 ○：未觀察到氣泡或是剝離 △：在很小的區域觀察到氣泡或是剝離 X：很容易就看得到氣泡或是剝離 在○的例子，只有當耐熱性及耐濕熱性根據上述標準均達到時，其被評估為○。對△及X，甚至當耐熱性及耐濕熱性只有一者根據上述標準有達到時，其被評估為△或X。 (4)評估立體效果 根據與上述實驗例(2)所述的同樣程序製得一複合偏光板。依照畫素與圖案化延遲層的單位圖案契合這樣的方式，貼合32吋的3D電視畫素(MPR32，DNP公司)於所製得之偏光板。 其次，帶入一具有在3D電視單位畫素上交替的紅/藍顏色之圖像後，以左圓偏光及右圓偏光具體化之影像的初始亮度，僅於包含螢幕中央的9個位置上測量。其後，以測量到的值估算中央部分及其他周邊部分間的亮度差，然後，以左眼影像光量總差以及右眼影像亮度總差為基礎，計算出亮度總平均差(見下列數學方程式)。 D=(DL
+DR
)/2 DL
=|( LC
– Le
)|, DR
=|( RC
– Re
)| ， Le
=(Le
1+Le
2+…+Le
8)/8, Re
=(Re
1+Re
2+…+Re
8)/8， (其中， D：亮度之總平均差 DL
：左眼影像亮度之總差 DR
：右眼影像亮度之總差 LC
：左眼影像中間部份之亮度 Le
：左眼影像周圍部分之平均亮度 Rc
：右眼影像中間部份之亮度 Re
：右眼影像周圍部分之平均亮度 Le
1,Le
2,...Le
8：左眼影像的周圍部分中，8個位置的個別亮度值 Re
1,Re
2,...Re
8：右眼影像的周圍部分中，8個位置的個別亮度值) 其次，將偏光板放置於60℃達250小時後，再次帶入該影像，並測量亮度，並評估初始亮度D值以及放置後D值之間的變化。 [依據亮度變化決定立體效果之標準] ○：當D值變化範圍為0或更大但小於30%時，未檢測到3D立體效果之位差。 △：當D值變化範圍為30%或更大但小於60%時，可觀察到立體效果輕微降低。 X： 當D值變化在60%或更大時，可清楚觀察到立體效果降低。 (5) 圖案化延遲層之單位圖案間隔變化之測量 根據與上述實驗例(2)所述相同的程序製得一複合偏光板。塗佈丙烯酸結合劑至一保護薄膜上，並對其進行固化後，然後將固化後的薄膜貼附至鈉玻璃上並進行高壓蒸氣滅菌法處理。 其次，用非接觸式三度空間測試儀(VMR-12072，Nikon公司) 測量初始單位圖案的間隔，及放置偏光板於60℃達250小時後，再次測量單位圖案間隔。然後，從上述結果估計單位圖案間隔之變化。 (6)耐熱水性評估 根據與上述實施例(2)所述相同的程序，製得複合偏光板。放置偏光板於23℃，相對溼度55%24小時之後，準備一尺寸為5 cm x 2 cm 之樣品，且其長邊為沿著吸收軸(在拉伸方向)。浸漬該樣品於水浴槽中於60℃4小時，以這樣的方式持樣品之短邊，使長方向上80%的樣品都浸漬於水中。然後，從水槽取出樣品並使其乾燥。 因偏光器由於浸漬熱水而收縮，因此樣品短邊中間之保護薄膜之尾端，以及收縮後的偏光器之間的距離被測量，並被定義為「收縮長度」。 而且，因受到熱水浸漬影響，碘從偏光器周圍部分沖提，因此發生變色。測量樣品短邊中央的收縮偏光器之尾端，與未變色部分之間距離，並定義其為「碘遺漏(iodine omission)長度」。 合計上述「收縮長度」以及「碘遺漏長度」可得一總侵蝕長度。即，總侵蝕長度意味著樣品短邊中間的保護薄膜尾端與偏光器未變色部分間的距離，而可理解的是當侵蝕長度變小的時候，防水性也就越好。 ◎：總侵蝕長度小於2 mm ○：總侵蝕長度大於2 mm但小於3 mm △：總侵蝕長度大於3 mm但小於5 mm X：總侵蝕長度大於5 mm
參考表2，在實例1至20中所製備的黏著劑組成物具有相當高的剝離強度。而且，使用其透過黏著所製成複合偏光板呈現出顯著提升的的耐熱性以及耐濕熱性，以及優越的立體效果而無位差。 另外，由於圖案化延遲層之單位圖案間隔的變化非常小，因此很容易能夠確保3D立體效果之一致性。 進一步地，在實例4、14、以及17至20中的具有芳香環之丙烯酸單體包含在需求成分中，其呈現良好的耐熱水性。 然而，比較性實例1至4之黏著劑組成物具有較低的剝離強度以及呈現了較差的耐熱性與耐濕熱性。 此外，比較性實例5及6在整體性能上呈現了減弱情形，特別是，圖案化延遲層的單位圖案間隔之變化的不均勻立體效果相當高，為0.35%或更高。The present invention discloses an adhesive composition comprising: a photopolymerizable compound comprising an acrylic monomer having a hydroxyl group or a carboxyl group, another acrylic monomer having an aromatic ring of 6 to 18 carbon atoms, and a photopolymerization initiator. Therefore, when the composite polarizing plate is manufactured by using the adhesive composition of the present invention in combination with a polarizer and a patterned retardation layer, the adhesion between the polarizer and the patterned retardation layer is remarkably improved, and the adhesive composition is superior. Heat resistance, heat and humidity resistance and improved 3D stereoscopic effect. The invention will be described in more detail below. <Adhesive Composition> The adhesive composition of the present invention may include a photopolymerizable compound. The photopolymerizable compound according to the present invention includes an acrylic monomer having a hydroxyl group or a carboxyl group, or another acrylic monomer having an aromatic ring of 6 to 18 carbon atoms. When the composite polarizing plate is manufactured by using the adhesive composition of the present invention in combination with a polarizer and a patterned retardation layer, the acrylic monomer having a hydroxyl group or a carboxyl group can remarkably improve the relationship between the polarizer and the patterned retardation layer. Adhesiveness. The reason for this result can be considered to be due to the polar group on the surface of the polarizer, which forms a hydrogen bond with another polar group contained in the liquid crystal coating layer of the patterned retardation layer. Similarly, the above acrylic monomer having an aromatic ring can also significantly improve the adhesion between the polarizer and the patterned retardation layer. The reason for this result can be considered to be because the above aromatic ring is combined with a benzene ring to conduct a π bond interaction. The benzene ring is present in the reactive liquid crystal monomer in the liquid crystal coating of the patterned retardation layer. This improved adhesion improves heat resistance and moist heat resistance. In addition, since the acrylic monomer having an aromatic ring has a preferable hot water resistance, the composite polarizing plate using the adhesive composition of the present invention may not be exposed to moisture generated by condensation during transportation or transportation. Peeling occurred. The improvement of the hot water resistance property is because the acrylic monomer having an aromatic ring generally has a low hydrophilicity, thereby inhibiting the penetration of moisture into the gap between the polarizer and the protective film. The acrylic monomer having a hydroxyl group according to the present invention is not particularly limited, and for example, may include a monomer represented by the following formula 1: [Formula 1] (wherein R 1 is a hydrogen atom or a methyl group; X is an oxygen atom or -NH-; R 2 is a linear or branched alkylene group having 1 to 6 carbon atoms and may be 4 to 8 The cycloolefin group of one carbon atom is broken.) The acrylic monomer having a hydroxyl group may include, for example, 2-hydroxyethyl (meth)acrylic acid, 2-hydroxypropyl (meth)acrylic acid, 3-hydroxypropyl ester (A) Acrylic acid, 4-hydroxybutyl ester (meth)acrylic acid, (4-(hydroxymethyl)cyclohexane) methyl ester (meth)acrylic acid, N-(2-hydroxyethyl) (meth)acrylic acid, N-(hydroxymethyl)acrylamide, and the like, but is not limited thereto. These may be used alone or in combination of two or more thereof. The acrylic monomer having a carboxyl group according to the present invention is not particularly limited, but may include, for example, at least one of the monomers represented by the following formulas 2 and 3: [Formula 2] (wherein R 1 is a hydrogen atom or a methyl group) [Equation 3] (wherein R 1 is a hydrogen atom or a methyl group; X is an oxygen atom or -NH-, R 2 is an alkylene group having a straight bond or a bond of 1 to 6 carbon atoms, or has 5 to 10 carbon atoms The cycloalkenyl group, if R 2 is the alkylene group, may be interrupted by an oxygen atom, an ester group or a cycloalkenyl group having 5 to 10 carbon atoms. The acrylic monomer having a carboxyl group may include, for example: Methyl)acrylic acid, 3-(acryloyloxy)propionic acid, 4-(2-(acryloyloxy)ethoxy-4-butanone acid, 3-((2-(acryloyloxy)ethoxy) Carbonyl)cyclohexanecarboxylic acid, 4-(2-acrylamide ethoxy)-4-butanone acid, or the like, but is not limited thereto. These may be used singly or in combination of two or more. The acrylic monomer having an aromatic ring of 6 to 18 carbon atoms is not particularly limited, and any one of the aromatic rings may be bonded to the benzene ring contained in the liquid crystal molecule of the patterned retardation layer to perform π-bond interaction. However, the acrylic monomer preferably has a benzene ring, and is preferably used to greatly reduce repulsion due to steric hindrance. For example, the monomer shown in the following formula 4: [Formula 4] (wherein R 1 is a hydrogen atom or a methyl group, X is an oxygen atom or -NH-, R 2 is a phenylalkyl group having an alkyl group having 1 to 6 carbon atoms, a phenyl group or a naphthyl group; and R 2 may be a hydroxyl group; a carboxyl group or a linear or branched alkyl group having 1 to 6 carbon atoms which may or may not be substituted; if R 2 is a phenylalkyl group, it may be an oxygen atom, an ester group or have 5 to 10 carbons The cycloalkenyl group of the atom is broken.) The acrylic monomer having an aromatic group of 6 to 18 carbon atoms may include, for example, phenyl (meth) acrylate, benzyl (meth) acrylate, naphthyl (methyl Acrylate, phenoxyethyl (meth) acrylate, phenethyl (meth) acrylate, or the like, but is not limited thereto. These may be used alone or in combination of two or more. Since the adhesive composition of the present invention has a low glass transition temperature, if the adhesive composition is used to combine the polarizer and the patterned retardation layer, the polarizer can be reduced even if exposed to a hot and humid environment for a long time. The contraction stress causes the shrinkage of the patterned retardation layer. For example, if exposed to 60 ° C for 250 hours, the patterned retardation layer may comprise a cell pattern spacing change of 0.13% or less. Therefore, it is possible to avoid the problem that the 3D stereoscopic effect is deteriorated. The glass transition temperature of the adhesive layer composition is not particularly limited, but may be 30 ° C or lower. The effect of suppressing shrinkage as described above within the above range can be excellent. From the viewpoint of improving heat resistance and heat and humidity resistance, when the polarizer composition of the present invention is used in combination with the polarizer and the patterned retardation layer, the glass transition temperature preferably ranges from 0 to 30 even in a hot and humid environment. At °C, peeling or thrust can still be avoided. The content ratio (weight) of the acrylic monomer having a hydroxyl group or a carboxyl group to the aromatic ring having an aromatic ring of 6 to 18 carbon atoms is not particularly limited as long as it is within the range of the above-mentioned performance, for example, weight. The range can be from 1:9 to 9:1. When the content ratio is within the above range, the adhesion between the polarizer and the patterned retardation layer can be maximized. The acrylic monomer having an aromatic ring of 6 to 18 carbon atoms may be included in 60 to 90% by weight based on the total weight of the photopolymerizable compound from the viewpoint of improvement in hot water resistance. The adhesive composition of the present invention may further comprise a photopolymerization initiator. The photopolymerization initiator to be used herein is not particularly limited, but may be a radical photopolymerization initiator including, for example, acetophenone, diphenyl ketone, thioxanthone, benzoin or benzoin alkyl ether. At least one of the group consisting of substances. These may be used alone or in combination of two or more thereof. More particularly, the photopolymerization initiator may include, for example, acetophenone, hydroxydimethylacetophenone, dimethylaminoacetophenone, dimethoxy-2-phenylacetophenone, 3-methylbenzene Ethyl ketone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-diethoxy-2-phenylacetophenone, 4-chloroacetophenone, 4,4-dimethyl Oxyacetophenone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, 4-hydroxycyclophenyl ketone, 1-hydroxy-cyclohexyl phenyl ketone, 2-methyl-1-[ 4-(methylthio)phenyl]-2-morpholinyl-1-propanone, 4-(2-hydroxyethoxy)phenyl-2(hydroxy-2-propyl)one, diphenyl ketone , 4-phenylbenzophenone, 4,4-diaminobenzophenone, 4,4-diethylaminobenzophenone, dichlorobenzophenone, anthracene, 2-methyl Base, 2-ethyl hydrazine, 2-tert-butyl hydrazine, 2-amino hydrazine, 2-methyl thioxanthone, 2-ethyl thioxanthone, 2-chlorothioxanthone, 2- 4-dimethylthioxanthone, 2-4-diethylthioxanthone, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, benzyl Acetone, diphenyl ketone, benzyl dimethyl ketal, benzoin dimethyl ketal, 4-dimethylamino benzene P-dimethylaminobenzoic acid ester, 2,4,6-trimethylphenyldiphenylphosphorus, hydrazine, triphenylamine, carbazole, or the like, but is not limited thereto. Commercially available products may include, for example, SIBA's darocur 1173, darocur 4265, darocur BP, darocur TPO, darocur MBF, iragacure 184, ilgacure 500, ilgacure 2959, ilgacure 754, ilgacure 651, ilgacure 369, ilgacure 907, ilgacure 1300, ilgacure 819, ilgacure 2022, irgacure 819DW, ilgacure 2100, ilgacure 784, ilgacure 250 or the like. These may be used alone or in combination of two or more thereof. The component of the photopolymerization initiator is not particularly limited, but may be, for example, 0.1 to 10 parts by weight, preferably 0.1 to 5 parts by weight, per 100 parts by weight of the photopolymerizable composition. If the photopolymerization initiator is less than 0.1% by weight, the curing rate is reduced and the curing process may be insufficient. On the other hand, when the photopolymerization initiator exceeds 10% by weight, the durability of the adhesive layer may be weakened. Alternatively, the adhesive composition of the present invention may further comprise a multifunctional acrylic monomer to improve durability. The polyfunctional acrylic monomer is not particularly limited, but may include, for example, trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, dipentaerythritol tri(meth)acrylate, Propionic acid modified trimethylolpropane tri(meth)acrylate, propylene oxide modified tri(meth)acrylate, tris(2-hydroxyethyl)isocyanuric acid tri(meth)acrylate, three a trifunctional monomer such as (meth)acryloyloxyethyl isocyanurate or tris(meth)acrylate; for example, diglycerin tetra(meth)acrylate, pentaerythritol (meth)acrylate, double a tetrafunctional monomer such as pentaerythritol (meth) acrylate or tetramethylolpropane tetra (meth) acrylate; for example, dipentaerythritol penta (meth) acrylate, propionic acid modified dipentaerythritol penta (meth) acrylate a pentafunctional monomer such as an ester; for example, dipentaerythritol hexa(meth) acrylate, caprolactone-modified dipentaerythritol hexa(meth) acrylate, isocyanate-modified urethane hexa(meth) acrylate, or the like Hexafunctional monomer. These may be used alone or in combination of two or more thereof. The component of the polyfunctional acrylic monomer is not particularly limited, but may range from 0.1 to 10 parts by weight, for example, for 100 parts by weight of the photopolymerizable compound. If the polyfunctional acrylic monomer is included in the above range, the effect of improving durability can be remarkably increased. Composite Polarizing Plate Further, the present invention provides a composite polarizing plate which is produced using the above-described adhesive composition. The composite polarizing plate of the present invention may comprise a polarizer and a patterned retardation layer attached to one side of the polarizer by an adhesive composition. The composite polarizing plate of the present invention can have high adhesion because the above-described adhesive composition is used to bond the polarizer to the patterned retardation layer. In this regard, as described above, the adhesive composition layer can form a hydrogen bond with the polarizer when a hydrogen bond is formed with the patterned retardation layer, so that the π bond interaction occurs. The polarizer is not particularly limited, and it is generally used in the field of display and can polarize incident light. For example, a film based on polyvinyl alcohol (PVA) dyed with iodine or a dichroic dye, and then a product obtained by stretching the dyed film in a predetermined direction can also be used. An additional film having a protective film function may be attached to the opposite side of the surface on which the patterned retardation layer is applied. The configuration of the patterned retardation layer is not particularly limited, but may include any configuration commonly used in the related art. For example, a substrate, an alignment film, and a liquid crystal coating layer may be laminated in this order to form a laminated structure. Alternatively, the alignment film may not be included in the structure. The patterned retardation layer can be applied and the liquid crystal coating facing the polarizer. The substrate is not particularly limited as long as it is made of a substance having good characteristics such as transparency, mechanical strength, thermal stability, moisture shielding property, retardation uniformity, isotropic property, and the like. For example, a substance selected from at least one selected from the group consisting of polyolefin resin, polyester resin, cellulose resin, polycarbonate resin, acrylic resin, styrene resin, vinyl chloride resin, amino group can be used. Resin, imide resin, polyether oxime resin, enamel resin, polyether ether oxime resin, polyether ether ketone resin, polyphenylene sulfide resin, vinyl alcohol resin, vinylidene chloride resin, butyral resin, allyl group Resin, acetal resin and epoxy resin. When the patterned retardation layer includes an alignment layer, the alignment layer can be formed by applying a composition to form an alignment layer to provide alignment characteristics, and then the coating film is patterned to have different alignment directions, wherein the alignment layer is generally used in related fields. . Methods of imparting alignment characteristics may include, for example, brushing, photoalignment, and the like. And the patterning method can include performing a multiple exposure process with a reticle. However, the method of imparting alignment characteristics and/or patterning is not particularly limited thereto. The light used for the exposure is not particularly limited, but may include, for example, polarized ultraviolet light irradiation at a predetermined angle, ion beam or plasma beam irradiation, or irradiation, or the like. For example, it is preferred to use polarized ultraviolet light. The liquid crystal layer can be formed by applying a composition to an alignment layer to form a liquid crystal coating layer including a reactive liquid crystal monomer (RM), which is then used in the related art. The RM is not particularly limited, but may include any monomer generally used in the related art, and is preferably a monomer having a benzene ring. When the patterned retardation layer does not include the alignment layer, the retardation film can be formed by applying a composition on the substrate having no alignment layer to form a liquid crystal coating layer, and then exposing it to simultaneously pattern and align. In this example, in order to guide the alignment, the composition for forming a liquid crystal coating may further include any compound which may be aligned by polarized ultraviolet light, such as a linear photopolymerizable polymer. If the patterned retardation layer does not include an alignment layer, a thin film display having a smaller thickness can be obtained as compared with the example including the alignment layer. The composite polarizing plate of the present invention can exhibit that the patterned retardation layer is controlled by the shrinkage due to the contraction of the polarizer even when the polarizing plate is exposed to a hot and humid environment for a long period of time. For example, if exposed to 60 ° C for 250 hours, the unit pattern interval of the patterned retardation layer may comprise a variation of 0.13% or less. The result is that the 3D stereo effect can be avoided. The composite polarizing plate of the present invention uses the above-described adhesive composition which has good adhesion between the polarizer and the patterned retardation layer. For example, the peel strength applied between the polarizer and the patterned retardation layer may be 1 N/25 mm or more, and a preferred range is 1.5 to 5 N/25 mm or more. Image Display Device The present invention further provides an image display device including the above composite polarizing plate. The image display device is not particularly limited, but may include, for example, a liquid crystal display device for stereoscopic image or a transflective liquid crystal display device, a plasma display device, an organic EL display device, or the like. The composite polarizing plate of the present invention can be provided at a position where the polarizing plate and the patterned retardation layer are generally laminated. The preferred embodiments are described below to more specifically understand the present invention with reference to the examples. It is apparent to those skilled in the relevant art that such embodiments are provided for the purpose of illustration, and are not intended to limit the scope of the appended claims. And such modifications and variations are intended to be included within the scope of the appended claims. Example Examples and Comparative Example Adhesive compositions were prepared according to the compositions and amounts of the different compositions listed in Table 1 below. Experimental Example (1) Measurement of Glass Conversion Temperature Each of the adhesive compositions prepared in the examples and comparative examples was introduced between two PET films subjected to an oxime release process, and then a roller laminator was used. It sticks. Thereafter, the combined products were irradiated with ultraviolet light using an ultraviolet exposure apparatus (FUSION Corporation), and irradiated with ultraviolet light at a wavelength of 313 nm at 2000 mJ/cm 2 to cure the adhesive composition. After the release film was removed, the cured adhesive layer was subjected to measurement of the glass transition temperature using a TGA analytical instrument (Q50, TA Instruments). (2) Measurement of Peel Strength The polyvinyl alcohol polarizer includes a patterned retardation layer (MPR 32, DNP Corporation) and a triethylenesulfide cellulose protective film attached thereto, which are placed in contact with the liquid crystal coating layer and used In the examples and comparative examples, an adhesive composition prepared by a roller laminator was attached thereto. For evaluation, the adhesive composition was not applied to the tail of the laminate. Then, ultraviolet irradiation was performed using an ultraviolet exposure apparatus (FUSION Corporation) to irradiate ultraviolet rays having a light amount of 2,000 nm at a wavelength of 2000 mJ/cm 2 to cure the adhesive composition. The composite polarizing plate produced as described above was cut to have a sample having a width of 25 mm. Next, according to the peel strength measuring method, the sample was subjected to peeling at a peeling rate of 300 mm/min in a 180-degree peeling direction. (3) Evaluation of heat resistance and heat and humidity resistance A composite polarizing plate was obtained by the same procedure as described in the above Experimental Example (2). The acrylic binder is applied to a protective film and cured. The cured film is then attached to soda glass and subjected to autoclaving. Next, after placing the treated film at 500 ° C for 500 hours and 60 ° 90% RH for 500 hours, the adhesion surface between the polarizer and the liquid crystal coating was investigated for bubble generation or peeling. The results of the survey will be used to evaluate heat resistance and heat and humidity resistance according to the following evaluation criteria. ○: No bubbles or peeling was observed Δ: Bubbles were observed in a small area or peeled off X: It is easy to see bubbles or peeling off in the case of ○ only when heat resistance and heat and humidity resistance are according to the above criteria When it is reached, it is evaluated as ○. For Δ and X, even when heat resistance and heat and humidity resistance were only achieved according to the above criteria, it was evaluated as Δ or X. (4) Evaluation of stereoscopic effect A composite polarizing plate was produced in accordance with the same procedure as described in the above Experimental Example (2). In accordance with the unit pattern of the pixel and the patterned retardation layer, a 32-inch 3D television pixel (MPR32, DNP Corporation) was attached to the polarizing plate produced. Secondly, after bringing in an image with a red/blue color alternating on the 3D TV unit pixel, the initial brightness of the image embodied by the left circular polarization and the right circular polarization is only at the nine positions including the center of the screen. measuring. Thereafter, the luminance difference between the central portion and other peripheral portions is estimated by the measured value, and then the total average luminance difference is calculated based on the total difference of the left-eye image light amount and the total brightness of the right-eye image (see the following mathematical equation). ). D=(D L +D R )/2 D L =|( L C — L e )|, D R =|( R C – R e )| , L e =(L e 1+L e 2+... +L e 8)/8, R e =(R e 1+R e 2+...+R e 8)/8, (where D: the total average difference D L of brightness: the total difference D of the left eye image brightness R : total difference in brightness of the right eye image L C : brightness of the middle part of the left eye image L e : average brightness of the part around the left eye image R c : brightness of the middle part of the right eye image R e : part around the right eye image Average brightness L e 1,L e 2,...L e 8: individual brightness values R e 1,R e 2,...R e 8 in the peripheral portion of the left eye image: right eye In the surrounding part of the image, the individual brightness values of the 8 positions. Secondly, after placing the polarizing plate at 60 ° C for 250 hours, bring the image again, measure the brightness, and evaluate the initial brightness D value and the D value after the placement. Change between. [Standard for determining stereoscopic effect according to brightness change] ○: When the D value varies by 0 or more but less than 30%, the difference of the 3D stereoscopic effect is not detected. △: When the D value varies by 30% or more but less than 60%, a slight decrease in the stereoscopic effect can be observed. X: When the value of D changes by 60% or more, a decrease in stereoscopic effect is clearly observed. (5) Measurement of variation of unit pattern interval of the patterned retardation layer A composite polarizing plate was produced according to the same procedure as described in the above Experimental Example (2). After coating the acrylic adhesive onto a protective film and curing it, the cured film is then attached to the soda glass and subjected to autoclaving. Next, the interval of the initial unit pattern was measured with a non-contact three-dimensional space tester (VMR-12072, Nikon Corporation), and the unit pattern interval was measured again after the polarizing plate was placed at 60 ° C for 250 hours. Then, the change in the unit pattern interval is estimated from the above result. (6) Evaluation of hot water resistance A composite polarizing plate was obtained according to the same procedure as described in the above Example (2). After placing the polarizing plate at 23 ° C and a relative humidity of 55% for 24 hours, a sample having a size of 5 cm x 2 cm was prepared, and its long side was along the absorption axis (in the stretching direction). The sample was immersed in a water bath at 60 ° C for 4 hours, and the short side of the sample was held in such a manner that 80% of the sample in the long direction was immersed in water. The sample is then removed from the sink and allowed to dry. Since the polarizer shrinks due to the immersion of hot water, the distance between the trailing end of the protective film in the middle of the short side of the sample and the contracted polarizer is measured and defined as "shrink length". Moreover, due to the influence of hot water impregnation, iodine is partially extracted from the periphery of the polarizer, and thus discoloration occurs. Measure the distance between the end of the shrinking polarizer at the center of the short side of the sample and the uncolored portion, and define it as "iodine omission length". The total "shrink length" and "iodine missing length" can be combined to obtain a total erosion length. That is, the total erosion length means the distance between the trailing end of the protective film in the middle of the short side of the sample and the non-discolored portion of the polarizer, and it is understood that the water repellency is better when the erosion length becomes smaller. ◎: Total erosion length is less than 2 mm ○: Total erosion length is greater than 2 mm but less than 3 mm △: Total erosion length is greater than 3 mm but less than 5 mm X: Total erosion length is greater than 5 mm Referring to Table 2, the adhesive compositions prepared in Examples 1 to 20 have a relatively high peel strength. Moreover, the composite polarizing plate which is formed by the adhesion thereof exhibits remarkably improved heat resistance and moist heat resistance, and superior stereoscopic effect without parallax. In addition, since the variation of the unit pattern interval of the patterned retardation layer is very small, it is easy to ensure the consistency of the 3D stereoscopic effect. Further, the acrylic monomers having an aromatic ring in Examples 4, 14, and 17 to 20 are contained in a desired component, which exhibits good hot water resistance. However, the adhesive compositions of Comparative Examples 1 to 4 had lower peel strength and exhibited poor heat resistance and moist heat resistance. Further, Comparative Examples 5 and 6 exhibited a weakening in overall performance, and in particular, the uneven stereoscopic effect of the change in the unit pattern interval of the patterned retardation layer was quite high, being 0.35% or more.