201210816 六、發明說明： 【發明所屬之技術領域】 本發明係關於保護液晶顯示器之層合板。 【先前技術】 專利文獻1中’係記載一種聚碳酸酯樹脂板，以及將 丙烯酸樹脂層層合於聚碳酸酯樹脂層的雙面之樹脂板，作 爲保護液晶顯示器之樹脂板。 [先前技術文獻] [專利文獻] [專利文獻1]日本特開2010-85978號公報 【發明內容】 (發明所欲解決之課題） 當人們在室外觀看液晶顯示器' 或是觀看車用液晶顯 示器時等，有時會戴上偏光太陽眼鏡來觀看液晶顯示器。 當戴上偏光太陽眼鏡並從正面方向觀看液晶顯示器的畫面 時，因射出光的偏光軸與偏光太陽眼鏡的穿透軸所形成之 角度的不同，有時會使畫面著色而導致可見性的降低。此 外，即使從正面方向觀看畫面時畫面不著色，但從斜向觀 看畫面時，亦有時會使畫面著色而導致可見性的降低。 此外，人們有時會戴上偏光太陽眼鏡來觀看三維液晶 顯示器的畫面。當戴上偏光太陽眼鏡並從正面方向觀看三 201210816 維液晶顯示器的畫面時’因射出光的偏光軸與偏光太陽眼 鏡的穿透軸所形成之角度的不同，有時會使畫面著色而導 致可見性的降低。此外，即使從正面方向觀看畫面時畫面 不著色，但從斜向觀看畫面時，亦有時會使畫面著色而導 致可見性的降低。 保護液晶顯示器之樹脂板，係設置在液晶顯示器的前 面側（觀看者側）。人們通過該樹脂板來觀看液晶顯示器 。專利文獻1中，係記載有藉由將樹脂板之面內的阻滞値 設爲既定範圔，當通過偏光太陽眼鏡等之偏光濾鏡從正面 方向觀看液晶顯示器的畫面時，可抑制影像可見性的降低 之內容。然而，專利文獻1中，並未記載關於從斜向觀看 畫面時之可見性。 本發明之課題在於提供一種當通過偏光太陽眼鏡等之 偏光濾鏡來觀看液晶顯示器的畫面時，不論從正面方向觀 看或從斜向觀看，均可抑制影像可見性的降低之液晶顯示 器保護用層合板。 (用以解決課題之手段） 本發明係關於下列（1 )至（6 )。 (1) —種液晶顯示器保護用層合板，其係在丙烯酸 樹脂層的雙面上層合聚碳酸酯樹脂層而成。 (2) 如前述（1)之液晶顯示器保護用層合板，其中 層合板之面內的阻滯値爲50nm以下。 (3) 如前述（1)或（2)之液晶顯示器保護用層合 -6- 201210816 板，其中前述丙烯酸樹脂層與層合於其雙面之前述聚碳酸 酯樹脂層，是藉由共擠壓而層合爲一體。 (4 )如前述（1 )至（3 )中任一項之液晶顯示器保 護用層合板，其中前述聚碳酸酯樹脂層之各層的厚度爲 0.1 mm以下。 (5)如前述（1)至（4)中任一項之液晶顯示器保 護用層合板，其係在至少單面上形成硬化被膜而成。 (6 )如前述（1 )至（5 )中任一項之液晶顯示器保 護用層合板，其係使用在觸控面板。 發明之效果： 根據本發明之液晶顯示器保護用層合板，當通過偏光 太陽眼鏡等之偏光濾鏡，不論從正面方向觀看或從斜向觀 看液晶顯示器的畫面時，均可抑制畫面呈現著色》因此， 根據本發明之液晶顯示器保護用層合板，可一邊確保液晶 顯示器的可見性並保護該液晶顯示器。 【實施方式】 本發明之液晶顯示器保護用層合板（以下有時稱爲「 層合板」），係在丙烯酸樹脂層的雙面上層合聚碳酸酯樹 脂層而成。當使用具有此般層構成之層合板時，通過偏光 太陽眼鏡等之偏光濾鏡從斜向觀看液晶顯示器的畫面時， 不易看到著色。 構成前述丙烯酸樹脂層之丙烯酸樹脂，較佳爲透明性 201210816 佳且剛性亦高之甲基丙烯酸樹脂。該甲基丙烯酸樹脂’可 爲甲基丙燦酸甲酯單位ι〇0重量％的甲基丙烯酸甲酯單聚 物，或是甲基丙烯酸甲酯和能夠與該甲基丙稀酸甲醋共聚 合之其他單體的共聚物。當甲基丙烯酸樹脂惟該共聚物時 ，較佳爲以甲基丙烯酸甲酯單位爲主成分之樹脂’具體而 言，通常係含有50重量％以上’較佳含有70重量％以上的 甲基丙烯酸甲酯單位之甲基丙烯酸甲酯樹脂。 能夠與甲基丙烯酸甲酯共聚合之前述其他單體，例如 可列舉出甲基丙烯酸乙酯、甲基丙烯酸丁酯、甲基丙烯環 己酯、甲基丙烯酸苯酯、甲基丙烯酸苄酯、甲基丙烯酸2-乙基己酯、甲基丙烯酸2-羥乙酯等之甲基丙烯酸甲酯以外 的甲基丙烯酸酯類，或是丙烯酸甲酯、丙烯酸乙酯、丙烯 酸丁酯、丙烯酸環己酯、丙烯酸苯酯、丙烯酸苄酯、丙烯 酸2-乙基己酯、丙烯酸2-羥乙酯等之丙烯酸酯類等。此外 ，苯乙烯或取代苯乙烯類，亦可列舉出氯苯乙烯、溴苯乙 烯等之鹵化苯乙烯類，乙烯基甲苯、α -甲基苯乙烯等之 烷基苯乙烯類等。再者，亦可列舉出甲基丙烯酸、丙烯酸 等之不飽和酸類，或是丙稀腈、甲基丙稀腈、馬來酸酐、 苯基馬來醯亞胺、環己基馬來醯亞胺等。此等能夠與甲基 丙烯酸甲酯共聚合之其他單體，可分別單獨使用或組合2 種以上使用》 丙烯酸樹脂可含有橡膠粒子。藉由含有橡膠粒子，可 提升層合板的耐衝擊性。該橡膠粒子，例如可列舉出丙烯 酸系多層結構聚合物，或是將丙烯酸系不飽和單體等之乙 201210816 烯性不飽和單體20〜95重量份接枝聚合於5〜8〇重量份的橡 膠狀聚合物而成之接枝共聚物等。 前述丙烯酸系多層結構聚合物，較佳爲內含有約 20~60重量％时彈性體層之聚合物，較佳爲具有硬質層作 爲最外層之聚合物，更佳爲具有硬質層作爲最內層之聚合 物。 前述彈性體層，較佳爲玻璃轉移點（Tg )未達2 5 °C之 丙烯酸系聚合物的層。具體而言，前述彈性體層，較佳爲 :藉由甲基丙烯酸烯丙酯等之多官能單體，使選自由丙烯 酸低級烷酯、甲基丙烯酸低級烷酯、丙烯酸低級烷氧基烷 酯、丙烯酸氰乙酯、丙烯醯胺、丙烯酸羥基低級烷酯、甲 基丙烯酸羥.基低級烷醋、丙烯酸及甲基丙馀酸所組成之群 組之1種以上的單官能單體進行交聯而成之聚合物的層。 前述丙烯酸低級烷酯等之低級烷基，例如可列舉出甲 基、乙基、丙基、異丙基、丁基、三級丁基、戊基、己基 等之碳數1〜6的直鏈或分枝烷基。前述丙烯酸低級烷氧基 烷酯之低級烷氧基，例如可列舉出甲氧基、乙氧基、丙氧 基、異丙氧基、丁氧基、三級丁氧基、戊氧基、己氧基等 之碳數1〜6的直鏈或分枝院氧基。此外，當以前述單官能 單體爲主成分來構成共聚物時，例如可使苯乙烯、$代;$ 乙烯等之其他單官能單體作爲共聚合成分，來進行共聚合 〇 前述硬質層較佳爲Tg是25°C以上之丙烯酸系聚合物的 層。具體而言，前述硬質層，較佳爲單獨使具有碳數1〜4 -9- 201210816 的烷基之甲基丙烯酸烷酯進行聚合，或是以其爲主成分進 行聚合之層。前述碳數1~4的烷基，例如可列舉出甲基、 乙基、丙基、異丙基、丁基、三級丁基等之直鏈或分枝烷 基。 當以具有碳數1〜4的烷基之甲基丙烯酸烷酯爲主成分 來構成共聚物時，可使用其他甲基丙烯酸烷酯或丙烯酸烷 酯、苯乙烯、取代苯乙烯、丙烯腈、甲基丙烯腈等之單官 能單體作爲共聚合成分，或是更加入甲基丙烯酸烯丙酯等 之多官能單體來構成交聯聚合物。前述甲基丙烯酸烷酯等 之烷基，例如可列舉出與前述低級烷基中所例示出者相同 ，爲碳數1~6的直鏈或分枝烷基。 前述丙烯酸系多層結構聚合物，例如有記載於日本特 公昭5 5 -275 76號公報、日本特開平6-80739號公報、日本 特開昭49-23292號公報等者。 將乙烯性不飽和單體2 0〜95重量份接枝聚合於5~80重 量份的橡膠狀聚合物而成之前述接枝共聚物中，橡膠狀聚 合物，例如可列舉出聚丁二烯橡膠、丙烯腈/ 丁二烯共聚 物橡膠、苯乙烯/ 丁二烯共聚物橡膠等之二烯系橡膠，聚 丙烯酸丁酯、聚丙烯酸丙酯、聚丙烯酸2-乙基己酯等之丙 烯酸系橡膠，乙烯/丙烯/非共軛二烯系橡膠等。此外，用 以接枝共聚合於該橡膠狀聚合物所用之乙烯性單體，例如 可列舉出苯乙烯、丙烯腈、（甲基）丙烯酸烷酯等。此等 接枝共聚物，例如有記載於日本特開昭55-147514號公報 、日本特公昭47-9740號公報等者》 -10- 201210816 橡膠粒子的使用量，相對於丙烯酸樹脂100重量份， 通常爲3〜150重量份，較佳爲4〜50重量份，尤佳爲5〜3〇重 量份。橡膠粒子的使用量較多時，雖可提升層合板的耐衝 擊性'’而有即使按壓時亦不容易斷裂之傾向，但橡膠粒子 的使用量過多時，層合板的表面硬度可能會降低。 構成前述聚碳酸酯樹脂層之聚碳酸酯樹脂，例如可列 舉出藉由界面聚縮合法或熔融酯交換法等使二價酚與羰化 劑進行反應所得之樹脂、藉由固相酯交換法等使碳酸酯預 聚合物進行聚合所得之樹脂、以及藉由開環聚合法使環狀 聚碳酸酯化合物進行聚合所得之樹脂等。 前述二價酚，例如可列舉出氫醌、間苯二酚、4,4’-二 羥基二苯基、雙（4-羥苯基）甲烷、雙{ (4-羥基-3,5-二 甲基）苯基}甲烷、1，1-雙（4-羥苯基）乙烷、1，1-雙（4-羥苯基）-1-苯基乙烷、2,2-雙（4-羥苯基）丙烷（通稱雙 酚A) 、2,2-雙{ (4-羥基-3-甲基）苯基}丙烷、2,2-雙{( 4-羥基-3,5-二甲基）苯基}丙烷、2，2-雙{ (4-羥基-3,5-二 溴）苯基}丙烷、2,2-雙{(3-異丙基-4-羥基）苯基}丙烷 、2,2-雙{ (4-羥基-3-苯基）苯基}丙烷、2,2-雙（4-羥苯 基）丁烷、2,2-雙（4_羥苯基）-3-甲基丁烷、2,2-雙（4-羥苯基）-3，3-二甲基丁烷' 2,4-雙（4-羥苯基）-2-甲基丁 烷、2,2-雙（4-羥苯基）戊烷、.2,2-雙（4-羥苯基）-4-甲 基戊烷、1，卜雙（4-羥苯基）環己烷、1，1-雙（4-羥苯基 )-4-異丙基環己烷、1，1-雙（4-羥苯基）-3,3,5-三甲基環 己烷、9，9-雙（4-羥苯基）芴、9,9-雙{ (4-羥基-3-甲基） -11 - 201210816 苯基}芴、雙（4-羥苯基）-鄰二異丙基苯、α，α'-雙（4-羥苯基）-間二異丙基苯、α，α’-雙（4-羥苯基）-對二異丙基苯、1，3·雙（4·羥苯基）-5,7-二甲基金剛烷、 4,4’-二羥基二苯基颯、4,4、二羥基二苯基亞楓、4,4'-二羥 基二苯基硫化物、4,4’-二羥基二苯基酮、4,4'-二羥基二苯 基醚、4,4'·二羥基二苯基酯等，可因應必要使用此等2種 以上。 當中，較佳係單獨使用選自雙酚A、2,2-雙{ ( 4_羥 基-3-甲基）苯基}丙烷、2,2·雙（4-羥苯基）丁烷、2,2-雙 (4-羥苯基）-3-甲基丁烷、2,2-雙（4-羥苯基）-3 ,3-二甲 基丁烷、2,2-雙（4-羥苯基）-4-甲基戊烷、1，1-雙（4-羥 苯基）-3,3,5-三甲基環己烷、及α，α·-雙（4-羥苯基）· 間二異丙基苯之二價酚，或使用2種以上，特佳爲單獨使 用雙酚A、雙酚Α與1，1-雙（4-羥苯基）-3,3,5-三甲基環己 烷之倂用、雙酚A與選自2,2-雙{ (4-羥基-3-甲基）苯基} 丙烷及α，α'-雙（4-羥苯基）-間二異丙基苯之1種以上的 二價酚之倂用。 前述羰化劑，例如可列舉出光氣等之鹵化羰、碳酸二 苯酯等之碳酸酯、二價酚的二鹵化甲酸酯等之鹵化甲酸酯 等，可因應必要使用此等2種以上。 聚碳酸酯樹脂層中，較佳係含有丙烯酸樹脂。當聚碳 酸酯樹脂層含有丙烯酸樹脂時，可提升聚碳酸酯樹脂層與 丙烯酸樹脂層之密著性。具體而言，聚碳酸酯樹脂層，較 佳是由相對於聚碳酸酯樹脂100重量份以0.01〜10重量份的 -12- 201210816 比率含有丙烯酸樹脂之聚碳酸酯樹脂組成物所構成。前述 丙烯酸樹脂，較佳可採用與前述丙烯酸樹脂層中所使用者 相同之丙烯酸樹脂，且較佳爲使用低分子量者。前述丙烯 酸樹脂的較佳分子量範圍，爲1,000〜1 〇〇,〇〇〇。該分子量 過低時，於擠壓成形時丙烯酸樹脂可能會揮發，過高時， 丙烯酸樹脂與聚碳酸酯樹脂可能引發相分離，而使光穿透 率降低。 雙面之聚碳酸酯樹脂層的各組成可互爲同一或不同。 此外，聚碳酸酯樹脂層及丙烯酸樹脂層中，可因應必要分 別添加1種或2種以上之例如光安定劑、紫外線吸收劑、抗 氧化劑、難燃劑、防帶電劑等之添加劑》 前述層合板，較佳是藉由共擠壓成形將丙烯酸樹脂層 與層合於其雙面之聚碳酸酯樹脂層層合爲一體而製造出。 該共擠壓成形可使用2座或3座之單軸或雙軸擠壓機，分別 將丙烯酸樹脂層的材料與聚碳酸酯樹脂層的材料熔融混練 後，經由分層器壓模或多歧管壓模等進行層合而進行。層 合爲一體之熔融層合樹脂體，例如可使用輥單元等來冷卻 固化。藉由共擠壓成形所製造之層合板，與藉由採用黏著 劑或接著劑之貼合所製造之層合板相比，容易進行二次成 形。 以下參照第1圖，詳細地說明藉由共擠壓成形來製造 層合板之一項實施形態。如第1圖所示，首先分別以不同 擠壓機1、2加熱丙烯酸樹脂層的材料與聚碳酸酯樹脂層的 材料並進行熔融混練，分別供給至分層器並熔融層合爲一 -13- 201210816 體後，從壓模3擠壓出而層合爲一體。 接著將從壓模3所擠壓出之薄片狀之熔融樹脂4，夾持 於在大致水平方向上相對向地配置之第1冷卻輥5與第2冷 卻輥6之間，並進行成形及冷卻。可藉由調整熔融樹脂4的 厚度，或第1、第2冷卻輥5、6的間隔、周速度等來調整所 得之層合板的厚度。 第1、第2冷卻輥5、6，該至少一方連接於馬達等之旋 轉驅動手段，並以既定周速度使兩輥旋轉而構成。兩輥當 中，第2冷卻輥6爲將夾持於兩輥間後之薄片狀層合板予以 捲拉之捲拉輥。 第1、第2冷卻輥5、6，例如可列舉出具有剛性之金屬 輥，和具有彈性之金屬彈性輥等。前述金屬輥，例如可列 舉出穿孔輪（drilled roll )、螺旋輥等。前述金屬彈性輥 ，例如可列舉出：具備軸輥、及以覆蓋該軸輥的外周面之 方式所配置且接觸於熔融樹脂4之圓筒型金屬製薄膜，並 且於此等軸輥與金屬製薄膜之間密封有水或油等之經溫度 控制後的流體之輥，或是於橡膠管表面捲繞有金屬皮帶之 輥等β 第1、第2冷卻輥5、6，可由選自金屬輥及金屬彈性輥 之1種所構成，或是組合金屬輥及金屬彈性輥來構成。 組合金屬輥及金屬彈性輥時，可得強度或熱收縮的異 向性等被降低之層合板。亦即，當將熔融樹脂4夾持於金 屬輥及金屬彈性輥時，金屬彈性輥夾介熔融樹脂4沿著金 屬輥的外周面彈性變形成凹狀，且金屬輥及金屬彈性輥夾 -14- 201210816 介熔融樹脂4以既定的接觸長度來接觸。藉此，金屬輥與 金屬彈性輥，係以面接觸於熔融樹脂4之方式來壓着’使 夾持於此等輥之間之熔融樹脂4一邊均一加壓成面狀一邊 製膜。結果可降低製膜時的應變，而得強度或熱收縮的異 向性被降低之層合板。 此外，組合金屬輥及金屬彈性輥時，較佳係將金屬彈 性輥設爲第1冷卻輥5，金屬輥設爲第2冷卻輥6。藉此可提 高組合金屬輥及金屬彈性輥所得之效果。 在第1、第2冷卻輥5、6間被夾持後之薄片狀層合板， 由第2冷卻輥6予以捲拉後，藉由圖中未顯示的捲取輥，一 邊在搬運輥上冷卻一邊被捲取，藉此可得層合板。 所得之層合板通常爲薄片狀，該厚度通常爲〇_1〜3 mm ，較佳爲〇.l~2mm，更佳爲0.1~1.5mm。該層合板中，層 合於丙烯酸樹脂層的雙面之聚碳酸酯樹脂層的各層厚度， 較佳爲0.1mm以下，尤佳爲0.01〜0.1mm。聚碳酸酯樹脂層 的厚度過大時，通過偏光太陽眼鏡等之偏光濾鏡從斜向觀 看液晶顯示器的畫面時，會有呈現著色之疑慮。此外，阻 滯値亦增大而因此存在著色之疑慮。雙面之聚碳酸酯樹脂 層的各層厚度可互爲相同或不同。丙烯酸樹脂層的厚度， 較佳爲層合板全體厚度的7〇~99%。 所得之層合板，該面內的阻滞値較佳爲5 Onm以下， 尤佳爲5〜50nm。面內的阻滯値過大時，通過偏光太陽眼 鏡等之偏光濾鏡從斜向觀看液晶顯示器的畫面時，會有呈 現著色之疑慮。此外，面內的阻滯値過小時，通過偏光太 -15- 201210816 陽眼鏡等之偏光濾鏡從正面方向觀看液晶顯示器的畫面時 ，畫面會變暗而有可見性降低之疑慮。 前述層合板，爲了提升耐擦傷性，較佳係至少在單面 上形成硬化被膜。在層合板的雙面上形成硬化被膜時，雙 面之硬化被膜的組成或厚度可互爲相同或不同》 前述硬化被膜係使硬化性塗料組成物硬化而形成。該 硬化性塗料組成物，係以帶來耐擦傷性之硬化性化合物爲 必要成分，且可因應必要例如含有硬化觸媒、導電性粒子 、溶劑、平坦劑、安定劑、抗氧化劑等。 前述硬化性化合物，例如可列舉出丙烯酸酯化合物、 丙烯酸胺基甲酸酯化合物、丙烯酸環氧酯化合物、經羧基 改質之丙烯酸環氧酯化合物、聚酯丙烯酸酯化合物、共聚 系丙烯酸酯化合物、脂環型環氧樹脂、縮水甘油醚環氧樹 脂、乙烯醚化合物、環氧丙烷化合物等。當中就硬化被膜 的耐擦傷性之觀點來看，較佳係使用多官能丙烯酸酯化合 物、多官能丙烯酸胺基甲酸酯化合物、多官能丙烯酸環氧 酯化合物等之自由基聚合系的硬化性化合物，或是烷氧矽 烷、烷基烷氧矽烷等之熱聚合系的硬化性化合物等。此等 硬化性化合物，較佳是例如可藉由照射電子束、輻射線、 紫外線等之能量線而硬化之化合物，或是藉由加熱而硬化 之化合物。此等硬化性化合物，可分別單獨使用或組合複 數種化合物來使用。 特佳之硬化性化合物，爲於分子中具有至少3個（甲 基）'丙烯醯氧基之化合物。在此，本說明書中，所謂（甲 -16- 201210816 基）丙烯醯氧基，是指丙烯醯氧基或甲基丙烯醯氧基，（ 甲基）丙烯酸酯是指丙烯酸酯或甲基丙烯酸酯，（甲基） 丙烯酸是指丙烯酸或甲基丙烯酸。 於分子中具有至少3個（甲基）丙烯醯氧基之前述化 合物，例如可列舉出三（甲基）丙烯酸三羥甲基丙烷酯、 三（甲基）丙烯酸三羥甲基乙烷酯、三（甲基）丙烯酸甘 油酯、三（甲基）丙烯酸五甘油酯、三或四（甲基）丙烯 酸新戊四醇酯、三或四或五或六（甲基）丙烯酸二新戊四 醇酯、四或五或六或七（甲基）丙烯酸三新戊四醇酯等之 三價以上之多元醇的聚（甲基）丙烯酸酯：將具有羥基之 (甲基）丙烯酸酯，以羥基相對於異氰酸基爲相等莫耳數 以上之比率，與於分子中至少具有2個異氰酸基之化合物 進行反應所得，並且分子中的（甲基）丙烯醯氧基的數目 爲3個以上之（甲基）丙烯酸胺基甲酸酯[例如，藉由二異 氰酸酯與三（甲基）丙烯酸新戊四醇之反應而得到6官能 的（甲基）丙烯酸胺基甲酸酯];三（2-羥乙基）異氰尿 酸的三（甲基）丙烯酸酯等。在此係例示出單體’可直接 使用此等單體，或是例如以二聚物、三聚物等之低聚物的 形式來使用。此外，可倂用單體與低聚物。此等（甲基） 丙烯酸酯化合物可分別單獨使用或混合2種以上使用。 於分子中具有至少3個（甲基）丙烯醯氧基之前述化 合物可使用市售品，該具體例，例如可列舉出均爲新中村 化學工業股份有限公司製的“NK Hard Ml 01”（丙烯酸胺 基甲酸酯系）、“NK Ester A-TMM-3L”（三丙烯酸新戊四 -17- 201210816 醇酯）、“NK Ester A-ΤΜΜΤ”（四丙烯酸新戊四醇酯）、 “NK Ester Α-9530”（五丙烯酸二新戊四醇酯）、及“ΝΚ Ester A-DPH”（六丙烯酸二新戊四醇酯），日本化藥股份 有限公司製的“KAYARAD DPCA”（六丙烯酸二新戊四醇 酯）、Sannopco股份有限公司製的“NOPCOCURE 200”系 列、大日本油墨化學股份有限公司製的“UNID 1C”系列等 〇 當使用於分子中具有至少3個（甲基）丙烯醯氧基之 前述化合物作爲硬化性化合物時，可因應必要，併用例如 二（甲基）丙烯酸乙二醇酯、二（甲基）丙烯酸二乙二醇 酯、二（甲基）丙烯酸1,6-己二醇酯、二（甲基）丙烯酸 新戊二醇酯等之於分子中具有2個（甲基）丙烯醯氧基之 化合物，作爲其他硬化性化合物》該使用量，相對於分子 中具有至少3個（甲基）丙烯醯氧基之化合物100重量份， 通常較佳爲20重量份以下。 當藉由紫外線使前述硬化性塗料組成物硬化時，硬化 觸媒較佳爲使用光聚合起始劑。該光聚合起始劑，例如可 列舉出苄、二苯基酮或該衍生物、噻吨酮類、苄基二甲基 縮酮類、α-羥基苯烷基酮類、羥酮類、胺基苯烷基酮類 、醯基膦氧化物類等，可因應必要使用此等2種以上。光 聚合起始劑的使用量，相對於硬化性化合物1 00重量份， 通常較佳爲0.1〜5重量份。 前述光聚合起始劑可使用市售品，該具體例，例如可 列舉出均爲Ciba Specialty Chemicals股份有限公司製的 -18- 201210816 “IRGACURE 651”、“IRGACURE 184”、“ IR G A C U RE 5 0 0’’ 、“IRGACURE 1 000”、“IRGACURE 2959”、“DAROCUR 1173” 、 “IRGACURE 907” 、 “IRGACURE 3 69” 、 “IRGACURE 1 700”、“IRGACURE 1 800”、 “IRGACURE 8 1 9”、“IRGACURE 7 84”等之 IRG ACURE ( IRGACURE )系 列及DAROCUR ( DAROCUR )系列，以及均爲日本化藥股 份有限公司製的 “KAYACURE ITX”、“KAYACURE DETX-S” 、 “KAYACURE BP-100” 、 “ K A Y A C U RE B M S ” 、 “KAYACURE 2-EAQ”、等之 KAYACURE ( KAYACURE ) 系列等。 藉由使導電性粒子含有於前述硬化性塗料組成物，可 對硬化被膜賦予防帶電性。前述導電性粒子，較佳例如可 使用銻-錫複合氧化物、含磷的氧化錫、氧化銻、銻·鋅複 合氧化物、氧化鈦、銦-錫複合氧化物（ITO )等之無機粒 子。 前述導電性粒子的粒徑，通常爲〇.5μηι以下，就硬化 被膜的防帶電性或透明性之觀點來看，以平均粒徑表示時 較佳爲Ο.ΟΟΙμπι以上，此外，較佳爲Ο.ίμιη以下，尤佳爲 0.05μπι以下。導電性粒子的平均粒徑較小時，可降低層合 板的霧度而提高透明性。 前述導電性粒子的使用量，相對於硬化性化合物100 重量份，通常爲2〜50重量份，較佳爲3〜20重量份。導電性 粒子的使用量較多時，硬化被膜的防帶電性有提升之傾向 ，但當導電性粒子的使用量過多時，硬化被膜的透明性可 -19- 201210816 能會降低。 前述導電性粒子，例如可藉由氣相分解法、電漿蒸發 法、烷氧化物分解法、共沉澱法、水熱法等來製造出。此 外，導電性粒子的表面，例如可藉由非離子系界面活性劑 、陽離子系界面活性劑、陰離子系界面活性劑、矽系偶合 劑、鋁系偶合劑等進行表面處理。 前述硬化性塗料組成物，以該黏度調整等爲目的，較 佳係含有溶劑，尤其在含有導電性粒子時，爲了其分散性 ，較佳係含有溶劑。當調製含有導電性粒子與溶劑之硬化 性塗料組成物時，例如可在混合導電性粒子與溶劑並使前 述導電性粒子分散於溶劑後，將該分散液與硬化性化合物 混合，或是在混合硬化性化合物與溶劑後，使導電性粒子 分散於該混合液。 前述溶劑，較佳爲可溶解硬化性化合物並且在塗佈後 容易揮發者，此外，當使用導電性粒子作爲塗料成分時， 較佳爲可使導電性粒子分散者。此般溶劑，例如可列舉出 二丙酮醇、甲醇、乙醇、異丙醇、異丁醇、2-甲氧乙醇、 2-乙氧乙醇、2-丁氧乙醇、1-甲氧基-2-丙醇等之醇類，丙 酮、丁酮、甲基異丁酮、二丙酮醇等之酮類，甲苯、二甲 苯等之芳香族烴類，乙酸乙酯、乙酸丁酯等之酯類，水等 。前述溶劑的使用量，可配合硬化性化合物的性狀等來適 當地調整。 當使平坦劑含有於前述硬化性塗料組成物時，較佳係 使用聚矽氧油，該例子可列舉出二甲基聚矽氧油、苯基甲 -20- 201210816 基聚矽氧油、經烷基/芳烷基改質的聚矽氧油、氟化聚矽 氧油、經聚醚改質的聚矽氧油、經脂肪酸酯改質的聚矽氧 油、甲基氫聚矽氧油、含有矽醇基的聚矽氧油、含有烷氧 基的聚矽氧油、含有酚基的聚矽氧油、經甲基丙燃酸基改 質的聚矽氧油、經胺基改質的聚矽氧油、經羧酸改質的聚 矽氧油、經甲醇改質的聚矽氧油、經環氧改質的聚矽氧油 、經锍基改質的聚矽氧油、經氟改質的聚矽氧油、經聚醚 改質的聚矽氧油等。此等平坦劑可分別單獨使用或混合2 種以上使用。前述平坦劑的使用量，相對於硬化性化合物 100重量份，通常爲0.01〜5重量份。 前述平坦劑可使用市售品，該具體例，例如可列舉出 均爲Toray'Dow Corning Silicone股份有限公司製的 “SH200-100cs”、“SH28PA”、“SH29PA”、“SH30PA”、 “ST8 3TA”、“ST80PA”、“ S T 9 7 P A，’及 “ S T 8 6 P A’’，以及均爲 BYK Japan股份有限公司製的 “BYK-3 02”、“BYK-3 07”、 “BYK-320”及 “BYK-330”等。 將如此所得之硬化性塗料組成物塗佈於前述層合板而 形成硬化性塗膜，接著使其硬化而形成硬化被膜。硬化性 塗料組成物的塗佈，例如可藉由棒塗佈法、微凹版塗佈法 、輥塗佈法、流動塗佈法、浸泡塗佈法、旋轉塗佈法、壓 模塗佈法、噴霧塗佈法等之塗佈法來進行。.硬.化性塗膜的 硬化，可因應硬化性塗料組成物的種類，藉由能量線的照 射或加熱等來進行。 藉由能量線的照射進行硬化時之能量線，例如可列舉 -21 - 201210816 出紫外線、電子束、輻射線等，該強度或照射時間等條件 ’可因應硬化性塗料組成物的種類來適當地選擇。此外， 藉由加熱進行硬化時，該溫度或時間等條件，可因應硬化 性塗料組成物的種類來適當地選擇，惟加熱溫度在不引起 層合板的變形下，一般較佳爲1 0 (TC以下。當硬化性塗料 組成物含有溶劑時，可在塗佈後，使溶劑揮發後，再使硬 化性塗膜硬化，或是同時進行溶劑的揮發與硬化性塗膜的 硬化。 前述硬化被膜的厚度，較佳爲0.5〜5 Ομιη，尤佳爲 1〜20μιη。硬化被膜的厚度較小時，有不易產生龜裂之傾 向，但過小時，耐擦傷性可能會不足。 前述層合板中，可因應必要，藉由塗佈法或濺鍍法、 真空蒸鍍法等對該表面施以抗反射處理。此外，亦可將另 外製作之抗反射性薄片貼合於層合板的單面或雙面，來賦 予抗反射效果。 如此所得之本發明之層合板，可適合於用作爲液晶顯 示器的保護用，特別適合於用作爲三維液晶顯示器的保護 用。此外，所保護之液晶顯示器的用途，例如可列舉出電 視或電腦的顯不器、行動電話或PHS ( Personal Handy-phone System) 、PD A ( Personal Digital Assistant )等之 可攜式資訊終端的顯示窗、數位相機或可攜式攝影機的視 窗部、可攜式遊戲機的顯示窗、車用導航系統或可攜式資 訊終端、工業機械的操作面板、可攜式遊戲機的觸控面板 等。本發明之層合板，特別適合於用作爲液晶顯示器的觸 -22- 201210816 控面板保護板。 從本發明之層合板來製作液晶顯示器的保護板時，首 先，可因應必要進行印刷、開孔等加工，並進行切斷爲必 要大小之處理。然後設置在液晶顯示器，如此可有效地保 護液晶顯示器。此時，當僅於層合板的單面形成硬化被膜 時，較佳係以使形成有硬化被膜之一側成爲表側（觀看者 側），未形成有硬化被膜之一側成爲內側（液晶顯示器側 )之方式來設置。 以下係顯示本發明之實施例，但本發明並不限定於此 〇 下列實施例及比較例中所使用之擠壓裝置的構成如下 所述。 .擠壓機1:使用螺桿徑65mm、單軸、附有通氣孔之 擠壓機（東芝機械股份有限公司製）。 •擠壓機2:使用螺桿徑4 5mm '單軸、附有通氣孔之 擠壓機（日立造船股份有限公司製）。 •分層器：使用2種3層分配型的分層器（日立造船股 份有限公司製）。 •壓模3:使用澆斗嘴寬度1400mm、澆斗嘴間隔imm 的T型壓模（日立造船股份有限公司製）。 •第1、第2冷卻輥5、6 :使用橫型且面長度1 400mm 、直徑300ηιηιφ的冷卻輕。 更具體地說明第1、第2冷卻輥5、6，第1冷卻輥5使用 金屬彈性輥。該金屬彈性輥，係採用以包覆軸輥的外周面 -23- 201210816 之方式配置有金屬製薄膜，於軸輥與金屬製薄膜之間密封 有流體者。 軸輥、金屬製薄膜及流體如下所述。 軸輥：不鏽鋼製 金屬製薄膜：厚度2mm之不鏽鋼製的鏡面金屬套 流體：油，藉由對該油進行溫度控制，可對金屬彈性 輥進行溫度控制。具體而言，藉由溫度調節機的導通及關 閉控制來加熱或冷卻前述油而能夠進行溫度控制，並於軸 輥與金屬製薄膜之間循環。 第2冷卻輥6係使用高剛性的金屬輥。該金屬輥係表面 狀態爲鏡面之不鏽鋼製的螺旋輥。 實施例及比較例中所使用之樹脂有下列2種。 •樹脂1 :使用熱變形溫度（Th ) 140 °C之Sumitomo201210816 VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a laminate for protecting a liquid crystal display. [Prior Art] Patent Document 1 describes a polycarbonate resin sheet and a double-sided resin sheet in which an acrylic resin layer is laminated on a polycarbonate resin layer as a resin sheet for protecting a liquid crystal display. [Prior Art] [Patent Document 1] [Patent Document 1] JP-A-2010-85978 SUMMARY OF INVENTION [Problems to be Solved by the Invention] When a person views a liquid crystal display outdoors or watches a liquid crystal display for a vehicle Wait, sometimes wear polarized sunglasses to watch the LCD monitor. When the polarized sunglasses are worn and the screen of the liquid crystal display is viewed from the front direction, the angle between the polarizing axis of the emitted light and the transmission axis of the polarized sunglasses may cause the screen to be colored and the visibility may be lowered. . In addition, even if the screen is not colored when viewing the screen from the front direction, the screen may be colored and the visibility may be lowered when viewing the screen obliquely. In addition, people sometimes wear polarized sunglasses to view the 3D LCD screen. When wearing polarized sunglasses and viewing the screen of the three 201210816-dimensional liquid crystal display from the front direction, 'the angle formed by the polarization axis of the emitted light and the transmission axis of the polarized sunglasses sometimes makes the picture visible and visible. Reduced sex. Further, even when the screen is viewed from the front side, the screen is not colored, but when the screen is viewed obliquely, the screen may be colored to cause a decrease in visibility. The resin plate for protecting the liquid crystal display is disposed on the front side (viewer side) of the liquid crystal display. The resin panel is used to view the liquid crystal display. In Patent Document 1, it is described that when the retardation 面 in the surface of the resin sheet is set to a predetermined range, when the liquid crystal display screen is viewed from the front direction by a polarizing filter such as polarized sunglasses, the image can be suppressed from being visible. The content of sexual reduction. However, Patent Document 1 does not describe the visibility when viewing a screen from an oblique direction. An object of the present invention is to provide a liquid crystal display protection layer capable of suppressing deterioration of image visibility when viewing a screen of a liquid crystal display by a polarizing filter such as polarized sunglasses or the like, viewed from a front direction or an oblique direction. Plywood. (Means for Solving the Problem) The present invention relates to the following (1) to (6). (1) A laminate for protecting a liquid crystal display, which is obtained by laminating a polycarbonate resin layer on both sides of an acrylic resin layer. (2) The laminate for protecting a liquid crystal display according to the above (1), wherein the retardation in the plane of the laminate is 50 nm or less. (3) The lining of the liquid crystal display panel of the above-mentioned (1) or (2), wherein the acrylic resin layer and the polycarbonate resin layer laminated on both sides thereof are coextruded. Press and laminate into one. (4) The laminate for liquid crystal display protection according to any one of the above (1) to (3) wherein the thickness of each layer of the polycarbonate resin layer is 0.1 mm or less. (5) The laminate for liquid crystal display protection according to any one of the above (1) to (4), wherein the cured film is formed on at least one surface. (6) The laminate for liquid crystal display protection according to any one of the above (1) to (5), which is used for a touch panel. Advantageous Effects of Invention According to the laminate for protecting a liquid crystal display of the present invention, when a polarizing filter such as polarized sunglasses is used, the color of the screen can be suppressed regardless of whether the screen of the liquid crystal display is viewed from the front direction or from the oblique direction. According to the laminate for protecting a liquid crystal display of the present invention, the visibility of the liquid crystal display can be ensured and the liquid crystal display can be protected. [Embodiment] The laminate for protective liquid crystal display of the present invention (hereinafter sometimes referred to as "laminate") is obtained by laminating a polycarbonate resin layer on both sides of an acrylic resin layer. When a laminate having such a layer is used, when the screen of the liquid crystal display is viewed obliquely by a polarizing filter such as polarized sunglasses, coloring is not easily observed. The acrylic resin constituting the acrylic resin layer is preferably a methacrylic resin having excellent transparency and high rigidity. The methacrylic resin ' can be methyl methacrylate monom ι 〇 0% by weight of methyl methacrylate monomer, or methyl methacrylate and can be co-linked with the methyl methacrylate A copolymer of other monomers polymerized. When the methacrylic resin is the only copolymer, it is preferably a resin having a methyl methacrylate unit as a main component. Specifically, it is usually 50% by weight or more, preferably 70% by weight or more of methacrylic acid. Methyl methacrylate resin in methyl ester units. Examples of the other monomer which can be copolymerized with methyl methacrylate include ethyl methacrylate, butyl methacrylate, methacryl cyclohexyl ester, phenyl methacrylate, and benzyl methacrylate. a methacrylate other than methyl methacrylate such as 2-ethylhexyl methacrylate or 2-hydroxyethyl methacrylate, or methyl acrylate, ethyl acrylate, butyl acrylate or acrylonitrile Acrylates such as ester, phenyl acrylate, benzyl acrylate, 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, and the like. Further, examples of the styrene or the substituted styrene include halogenated styrenes such as chlorostyrene and bromostyrene, and alkylstyrenes such as vinyltoluene and α-methylstyrene. Further, examples thereof include unsaturated acids such as methacrylic acid and acrylic acid, or acrylonitrile, methyl acrylonitrile, maleic anhydride, phenyl maleimide, cyclohexylmaleimide, and the like. . These other monomers which can be copolymerized with methyl methacrylate may be used alone or in combination of two or more. The acrylic resin may contain rubber particles. By containing rubber particles, the impact resistance of the laminate can be improved. The rubber particles may, for example, be an acrylic multilayer polymer or may be graft-polymerized in an amount of from 5 to 95 parts by weight based on 20 to 95 parts by weight of the ethyl 20121016 ethylenically unsaturated monomer such as an acrylic unsaturated monomer. A graft copolymer made of a rubbery polymer or the like. The acrylic multi-layer polymer preferably has a polymer having an elastomer layer of about 20 to 60% by weight, preferably a polymer having a hard layer as an outermost layer, and more preferably a hard layer as an innermost layer. polymer. The above elastomer layer is preferably a layer of an acrylic polymer having a glass transition point (Tg) of less than 25 °C. Specifically, the elastomer layer is preferably selected from the group consisting of a lower alkyl acrylate, a lower alkyl methacrylate, a lower alkoxyalkyl acrylate, and the like by a polyfunctional monomer such as allyl methacrylate. One or more monofunctional monomers of a group consisting of cyanoethyl acrylate, acrylamide, hydroxy lower alkyl acrylate, hydroxy hydroxy lower alkyl vinegar, acrylic acid, and methacrylic acid are crosslinked. A layer of polymer. Examples of the lower alkyl group such as the lower alkyl acrylate include a linear chain having a carbon number of 1 to 6 such as a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a tertiary butyl group, a pentyl group or a hexyl group. Or branched alkyl. Examples of the lower alkoxy group of the lower alkyl alkoxyalkyl acrylate include a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group, a tertiary butoxy group, a pentyloxy group, and a hexyloxy group. A linear or branched alkoxy group having a carbon number of 1 to 6 such as an oxy group. Further, when the copolymer is composed of the monofunctional monomer as a main component, for example, styrene, $ generation, or other monofunctional monomer such as ethylene may be copolymerized as a copolymerization component, and the hard layer may be Preferably, the Tg is a layer of an acrylic polymer of 25 ° C or higher. Specifically, the hard layer is preferably a layer obtained by polymerizing an alkyl methacrylate having an alkyl group having a carbon number of 1 to 4 -9 to 201210816 or polymerizing it as a main component. Examples of the alkyl group having 1 to 4 carbon atoms include a linear or branched alkyl group such as a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group or a tertiary butyl group. When a copolymer is composed of an alkyl methacrylate having an alkyl group having 1 to 4 carbon atoms as a main component, other alkyl methacrylate or alkyl acrylate, styrene, substituted styrene, acrylonitrile, and A may be used. A monofunctional monomer such as acrylonitrile is used as a copolymerization component, or a polyfunctional monomer such as allyl methacrylate is further added to constitute a crosslinked polymer. The alkyl group such as the alkyl methacrylate may, for example, be a linear or branched alkyl group having 1 to 6 carbon atoms, which is the same as those exemplified for the lower alkyl group. The acryl-type multilayer structure polymer is described, for example, in Japanese Patent Publication No. 5-5-27576, Japanese Patent Application Laid-Open No. Hei No. Hei. The graft copolymer is obtained by graft-polymerizing 200 to 95 parts by weight of an ethylenically unsaturated monomer to 5 to 80 parts by weight of a rubbery polymer. Examples of the rubbery polymer include polybutadiene. Diene rubber such as rubber, acrylonitrile/butadiene copolymer rubber, styrene/butadiene copolymer rubber, acrylic acid such as polybutyl acrylate, propyl polyacrylate or 2-ethylhexyl polyacrylate Rubber, ethylene/propylene/non-conjugated diene rubber, and the like. Further, examples of the ethylenic monomer used for the graft copolymerization of the rubbery polymer include styrene, acrylonitrile, and alkyl (meth)acrylate. The amount of the rubber particles used in the above-mentioned graft copolymer is, for example, described in JP-A-55-147514, JP-A-47-9740, and the like. -10-201210816 The amount of the rubber particles used is 100 parts by weight based on 100 parts by weight of the acrylic resin. It is usually 3 to 150 parts by weight, preferably 4 to 50 parts by weight, particularly preferably 5 to 3 parts by weight. When the amount of the rubber particles used is large, the impact resistance of the laminate can be improved, and the pressure of the laminate is not likely to be broken even when pressed. However, when the amount of the rubber particles used is too large, the surface hardness of the laminate may be lowered. The polycarbonate resin constituting the polycarbonate resin layer may, for example, be a resin obtained by reacting a divalent phenol with a carbonylating agent by an interfacial polycondensation method or a melt transesterification method, or by solid phase transesterification. The resin obtained by polymerizing a carbonate prepolymer, and the resin obtained by polymerizing a cyclic polycarbonate compound by a ring-opening polymerization method. Examples of the divalent phenol include hydroquinone, resorcin, 4,4'-dihydroxydiphenyl, bis(4-hydroxyphenyl)methane, and bis{(4-hydroxy-3,5-di). Methyl)phenyl}methane, 1,1-bis(4-hydroxyphenyl)ethane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, 2,2-dual (4 -Hydroxyphenyl)propane (commonly known as bisphenol A), 2,2-bis{(4-hydroxy-3-methyl)phenyl}propane, 2,2-bis{(4-hydroxy-3,5-di Methyl)phenyl}propane, 2,2-bis{(4-hydroxy-3,5-dibromo)phenyl}propane, 2,2-bis{(3-isopropyl-4-hydroxy)phenyl }propane, 2,2-bis{(4-hydroxy-3-phenyl)phenyl}propane, 2,2-bis(4-hydroxyphenyl)butane, 2,2-bis(4-hydroxyphenyl) )-3-methylbutane, 2,2-bis(4-hydroxyphenyl)-3,3-dimethylbutane ' 2,4-bis(4-hydroxyphenyl)-2-methylbutyl Alkane, 2,2-bis(4-hydroxyphenyl)pentane, .2,2-bis(4-hydroxyphenyl)-4-methylpentane, 1, bis(4-hydroxyphenyl) ring Hexane, 1,1-bis(4-hydroxyphenyl)-4-isopropylcyclohexane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane 9,9-bis(4-hydroxyphenyl)anthracene, 9,9-bis{(4-hydroxy-3-methyl)-11 - 2012 10816 phenyl}fluorene, bis(4-hydroxyphenyl)-o-diisopropylbenzene, α,α'-bis(4-hydroxyphenyl)-m-isopropylbenzene, α,α'-double ( 4-hydroxyphenyl)-p-diisopropylbenzene, 1,3·bis(4-hydroxyphenyl)-5,7-dimethyladamantane, 4,4'-dihydroxydiphenylanthracene, 4 4, dihydroxydiphenyl sulfite, 4,4'-dihydroxydiphenyl sulfide, 4,4'-dihydroxydiphenyl ketone, 4,4'-dihydroxydiphenyl ether, 4, 4'-dihydroxydiphenyl ester or the like, and two or more of them may be used as necessary. Preferably, it is selected from the group consisting of bisphenol A, 2,2-bis{(4-hydroxy-3-methyl)phenyl}propane, 2,2.bis(4-hydroxyphenyl)butane, 2 , 2-bis(4-hydroxyphenyl)-3-methylbutane, 2,2-bis(4-hydroxyphenyl)-3,3-dimethylbutane, 2,2-bis(4- Hydroxyphenyl)-4-methylpentane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, and α,α·-bis(4-hydroxybenzene) Divalent phenol of diisopropyl benzene, or two or more kinds thereof, particularly preferably bisphenol A, bisphenol hydrazine and 1,1-bis(4-hydroxyphenyl)-3,3, Bismuth of 5-trimethylcyclohexane, bisphenol A and selected from 2,2-bis{(4-hydroxy-3-methyl)phenyl}propane and α,α'-bis(4-hydroxybenzene) The use of one or more kinds of divalent phenols of the base)-m-isopropylbenzene. The carbonylating agent may, for example, be a halogenated carboxylic acid ester such as a halogenated carbonyl or a diphenyl carbonate such as phosgene or a dihalogenated formic acid ester of a divalent phenol, etc., and these two or more kinds may be used as necessary. . The polycarbonate resin layer preferably contains an acrylic resin. When the polycarbonate resin layer contains an acrylic resin, the adhesion between the polycarbonate resin layer and the acrylic resin layer can be enhanced. Specifically, the polycarbonate resin layer is preferably composed of a polycarbonate resin composition containing an acrylic resin in a ratio of -12 to 201210816 in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the polycarbonate resin. As the acrylic resin, an acrylic resin which is the same as that of the above-mentioned acrylic resin layer can be preferably used, and it is preferred to use a low molecular weight. The preferred molecular weight range of the above acrylic resin is 1,000 to 1 Torr. When the molecular weight is too low, the acrylic resin may volatilize during extrusion molding. When the molecular weight is too high, the acrylic resin and the polycarbonate resin may cause phase separation to lower the light transmittance. The respective constituents of the double-sided polycarbonate resin layer may be the same or different from each other. Further, in the polycarbonate resin layer and the acrylic resin layer, one or two or more kinds of additives such as a light stabilizer, an ultraviolet absorber, an antioxidant, a flame retardant, and an antistatic agent may be added as needed. The plywood is preferably produced by laminating an acrylic resin layer and a polycarbonate resin layer laminated on both sides thereof by co-extrusion molding. The co-extrusion molding can use a 2- or 3-seat uniaxial or biaxial extruder to separately melt and knead the material of the acrylic resin layer and the material of the polycarbonate resin layer, and then press mold or multi-disintegration via a delaminator. The tube stamper or the like is laminated and carried out. The melted laminated resin body which is laminated as a whole can be cooled and solidified by, for example, a roll unit or the like. The laminate produced by co-extrusion is easily formed into a secondary shape as compared with a laminate produced by bonding with an adhesive or an adhesive. Hereinafter, an embodiment in which a laminate is produced by co-extrusion molding will be described in detail with reference to Fig. 1. As shown in Fig. 1, first, the material of the acrylic resin layer and the material of the polycarbonate resin layer are heated by different extruders 1, 2, and melt-kneaded, respectively, and supplied to a layerer and melt-laminated into a-13. - 201210816 After the body, it is extruded from the die 3 and laminated into one. Then, the sheet-like molten resin 4 extruded from the stamper 3 is sandwiched between the first cooling roll 5 and the second cooling roll 6 which are disposed substantially in the horizontal direction, and is molded and cooled. . The thickness of the obtained laminate can be adjusted by adjusting the thickness of the molten resin 4, or the interval between the first and second cooling rolls 5, 6, the peripheral speed, and the like. At least one of the first and second cooling rolls 5 and 6 is connected to a rotation driving means such as a motor, and is configured to rotate the two rolls at a predetermined peripheral speed. Among the two rolls, the second cooling roll 6 is a take-up roll that winds the sheet-like laminate which is sandwiched between the rolls. Examples of the first and second cooling rolls 5 and 6 include a metal roll having rigidity and a metal elastic roll having elasticity. The metal roll may, for example, be a drilled roll, a spiral roll or the like. The metal elastic roller includes, for example, a shaft roll and a cylindrical metal film disposed so as to cover the outer peripheral surface of the shaft roll and contact the molten resin 4, and the isoaxial roll and the metal are used here. a film in which a temperature-controlled fluid such as water or oil is sealed between the films, or a β-first and second cooling rolls 5 and 6 which are wound with a metal belt on the surface of the rubber tube may be selected from metal rolls. It is composed of one type of metal elastic roller or a combination of a metal roller and a metal elastic roller. When the metal roll and the metal elastic roll are combined, a laminate in which the strength or the heat shrinkage anisotropy is lowered can be obtained. That is, when the molten resin 4 is sandwiched between the metal roll and the metal elastic roll, the metal elastic roll interposing the molten resin 4 elastically deforms along the outer peripheral surface of the metal roll to form a concave shape, and the metal roll and the metal elastic roll clamp-14 - 201210816 The molten resin 4 is contacted with a predetermined contact length. By this, the metal roll and the metal elastic roll are pressed against each other so as to be in surface contact with the molten resin 4, and the molten resin 4 sandwiched between the rolls is uniformly pressed into a planar shape to form a film. As a result, the strain at the time of film formation can be lowered, and the laminate in which the anisotropy of strength or heat shrinkage is lowered can be obtained. Further, when the metal roll and the metal elastic roll are combined, it is preferable to use the metal elastic roll as the first cooling roll 5 and the metal roll as the second cooling roll 6. Thereby, the effect obtained by combining the metal roll and the metal elastic roll can be improved. The sheet-like laminate which has been sandwiched between the first and second cooling rolls 5 and 6 is wound by the second cooling roll 6, and then cooled on the conveyance roll by a take-up roll not shown in the drawing. The laminate is obtained by being taken up on one side. The resulting laminate is usually in the form of a sheet, and the thickness is usually 〇_1 to 3 mm, preferably 〇1 to 2 mm, more preferably 0.1 to 1.5 mm. In the laminate, the thickness of each layer of the double-sided polycarbonate resin layer laminated on the acrylic resin layer is preferably 0.1 mm or less, and more preferably 0.01 to 0.1 mm. When the thickness of the polycarbonate resin layer is too large, when the screen of the liquid crystal display is viewed obliquely by a polarizing filter such as polarized sunglasses, there is a concern that coloring may occur. In addition, the retardation enthalpy is also increased and there is a concern of coloring. The thickness of each layer of the double-sided polycarbonate resin layer may be the same or different from each other. The thickness of the acrylic resin layer is preferably from 7 〇 to 99% of the entire thickness of the laminate. In the obtained laminate, the retardation in the plane is preferably 5 Onm or less, and more preferably 5 to 50 nm. When the in-plane retardation is too large, when the liquid crystal display screen is viewed obliquely through a polarizing filter such as a polarized solar eye lens, there is a concern that coloring may occur. In addition, when the in-plane retardation is too small, when the screen of the liquid crystal display is viewed from the front side by a polarizing filter such as polarized glasses, the screen will be darkened and the visibility will be lowered. In order to improve the scratch resistance, the laminate is preferably formed of a hardened film on at least one side. When the hardened film is formed on both surfaces of the laminate, the composition or thickness of the hardened film on both sides may be the same or different from each other. The hardened film is formed by hardening the curable coating composition. The curable coating composition is an essential component to impart a scratch-resistant curable compound, and may contain, for example, a curing catalyst, conductive particles, a solvent, a flat agent, a stabilizer, an antioxidant, and the like. Examples of the curable compound include an acrylate compound, an urethane acrylate compound, an acrylate acrylate compound, a carboxyl group-modified acrylate epoxy compound, a polyester acrylate compound, and a copolymer acrylate compound. An alicyclic epoxy resin, a glycidyl ether epoxy resin, a vinyl ether compound, a propylene oxide compound, or the like. From the viewpoint of scratch resistance of the cured film, a radical polymerization-based curable compound such as a polyfunctional acrylate compound, a polyfunctional urethane urethane compound, or a polyfunctional acrylate epoxy ester compound is preferably used. Further, it is a thermopolymerizable curable compound such as an alkoxysilane or an alkyl alkoxysilane. The curable compound is preferably, for example, a compound which can be hardened by irradiation with an energy beam such as an electron beam, a radiation, or an ultraviolet ray, or a compound which is hardened by heating. These curable compounds can be used singly or in combination of a plurality of compounds. A particularly preferred curable compound is a compound having at least 3 (meth) 'acrylomethoxy groups in the molecule. Here, in the present specification, the term "(A-16-201210816)) propylene methoxy group means propylene oxime or methacryloxy group, and (meth) acrylate means acrylate or methacrylate. (Meth)Acrylic refers to acrylic acid or methacrylic acid. Examples of the compound having at least three (meth) acryloxy groups in the molecule include trimethylolpropane tris(meth)acrylate and trimethylolethane tri(meth)acrylate. Glycerol tris(meth)acrylate, pentaglyceryl tris(meth)acrylate, pentaerythritol tris or tetra(meth)acrylate, dipentaerythritol tris or tetra or five or six (meth)acrylate Poly(meth) acrylate of a trivalent or higher polyhydric alcohol such as ester, tetra- or penta- or hexa- or hexa-(meth)acrylic acid, such as tri-n-pentaerythritol acrylate: a (meth) acrylate having a hydroxyl group, and a hydroxy group It is obtained by reacting a compound having at least two isocyanate groups in a molecule with respect to an isocyanate group in an amount equal to or more than the molar number, and the number of (meth)acryloxy groups in the molecule is three The above (meth)acrylic acid urethane [for example, a reaction of a diisocyanate with tris(meth)acrylic acid pentaerythritol to obtain a 6-functional (meth)acrylic acid urethane]; (2-hydroxyethyl)isocyanuric acid tris(meth)acrylic acid Wait. Here, it is exemplified that the monomer ' can be used as it is, or it can be used, for example, in the form of an oligomer of a dimer, a trimer or the like. In addition, monomers and oligomers can be used. These (meth) acrylate compounds may be used alone or in combination of two or more. A commercially available product can be used as the above-mentioned compound having at least three (meth) acryloxy groups in the molecule. For example, "NK Hard Ml 01" (manufactured by Shin-Nakamura Chemical Co., Ltd.) can be used. Acryl amide), "NK Ester A-TMM-3L" (new pentylene tetrahexa-17-201210816 alcohol ester), "NK Ester A-ΤΜΜΤ" (neopentitol tetraacrylate), " NK Ester Α-9530" (dipentaerythritol pentaacrylate), and "ΝΚ Ester A-DPH" (dipentaerythritol hexaacrylate), "KAYARAD DPCA" manufactured by Nippon Kayaku Co., Ltd. (six "Nicopentyl acrylate"), "NOPCOCURE 200" series manufactured by Sannopco Co., Ltd., "UNID 1C" series manufactured by Dainippon Ink Chemical Co., Ltd., etc., have at least 3 (methyl) in the molecule. When the above compound of the acryloxy group is used as the curable compound, for example, ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, or di(meth)acrylic acid 1 may be used as necessary. 6-hexanediol ester, two a compound having two (meth) propylene fluorenyloxy groups in a molecule such as neopentyl glycol methacrylate, which is used as an additional curable compound, and has at least three (methyl) groups in the molecule. The compound of the propylene methoxy group is usually preferably 20 parts by weight or less based on 100 parts by weight. When the curable coating composition is cured by ultraviolet rays, it is preferred to use a photopolymerization initiator for the hardening catalyst. Examples of the photopolymerization initiator include benzyl, diphenyl ketone or the derivative, thioxanthone, benzyldimethyl ketal, α-hydroxyphenylalkyl ketone, hydroxyketone, and amine. For the phenyl ketone ketones and the fluorenyl phosphine oxides, two or more of them may be used as necessary. The amount of the photopolymerization initiator to be used is usually preferably 0.1 to 5 parts by weight based on 100 parts by weight of the curable compound. A commercially available product can be used as the photopolymerization initiator. Specific examples thereof include -18 to 201210816 "IRGACURE 651", "IRGACURE 184", and "IR GAC RE 5 0" manufactured by Ciba Specialty Chemicals, Inc. 0'', "IRGACURE 1 000", "IRGACURE 2959", "DAROCUR 1173", "IRGACURE 907", "IRGACURE 3 69", "IRGACURE 1 700", "IRGACURE 1 800", "IRGACURE 8 1 9", "IRGACURE 7 84" and other IRG ACURE ( IRGACURE ) series and DAROCUR ( DAROCUR ) series, as well as "KAYACURE ITX", "KAYACURE DETX-S", "KAYACURE BP-100" made by Nippon Kayaku Co., Ltd. "KAYACUURE BMS", "KAYACURE 2-EAQ", and other KAYACURE (KAYACURE) series, etc. By providing conductive particles in the curable coating composition, it is possible to impart antistatic property to the cured film. Preferably, for example, a bismuth-tin composite oxide, a phosphorus-containing tin oxide, a cerium oxide, a cerium-zinc composite oxide, a titanium oxide, an indium-tin composite oxide (ITO), or the like can be used. The particle diameter of the conductive particles is usually 〇.5μηι or less, and from the viewpoint of the antistatic property or transparency of the cured film, the average particle diameter is preferably Ο.ΟΟΙμπι or more, and more preferably Preferably, the thickness of the conductive particles is 0.05 μm or less. When the average particle diameter of the conductive particles is small, the haze of the laminate can be lowered to improve the transparency. The amount of the conductive particles used is relative to the curable compound. 100 parts by weight, usually 2 to 50 parts by weight, preferably 3 to 20 parts by weight. When the amount of the conductive particles used is large, the antistatic property of the cured film tends to increase, but the amount of the conductive particles is used. When the amount is too large, the transparency of the cured film can be lowered by -19-201210816. The conductive particles can be, for example, a gas phase decomposition method, a plasma evaporation method, an alkoxide decomposition method, a coprecipitation method, a hydrothermal method, or the like. Further, the surface of the conductive particles may be, for example, a nonionic surfactant, a cationic surfactant, an anionic surfactant, an oxime coupling agent, or an aluminum coupling. For the purpose of the viscosity adjustment or the like, the curable coating composition preferably contains a solvent, and particularly when the conductive particles are contained, a solvent is preferably used for the dispersibility. When the curable coating composition containing the conductive particles and the solvent is prepared, for example, the conductive particles and the solvent may be mixed and the conductive particles may be dispersed in a solvent, and then the dispersion may be mixed with the curable compound or mixed. After the curable compound and the solvent, the conductive particles are dispersed in the mixed solution. The solvent is preferably one which dissolves the curable compound and is easily volatilized after coating. Further, when conductive particles are used as the coating component, it is preferred to disperse the conductive particles. Examples of such a solvent include diacetone alcohol, methanol, ethanol, isopropanol, isobutanol, 2-methoxyethanol, 2-ethoxyethanol, 2-butoxyethanol, and 1-methoxy-2-. An alcohol such as propanol, a ketone such as acetone, methyl ethyl ketone, methyl isobutyl ketone or diacetone alcohol; an aromatic hydrocarbon such as toluene or xylene; an ester such as ethyl acetate or butyl acetate; Wait. The amount of the solvent to be used can be appropriately adjusted in accordance with the properties of the curable compound. When the flattening agent is contained in the curable coating composition, polyfluorene oxide oil is preferably used, and examples thereof include dimethylpolyphthalic acid oil, phenylmethyl-20-201210816-based polyoxyxene oil, and Alkyl/aralkyl modified polyoxygenated oil, fluorinated polyoxygenated oil, polyether modified polyoxygenated oil, fatty acid ester modified polyoxygenated oil, methylhydrogenated polyoxygenated oxygen Oil, polyoxyl oil containing sterol groups, polyoxyxane oil containing alkoxy groups, polyoxyphthalocene oil containing phenol groups, polyoxygenated oil modified with methyl propylene acid group, modified by amine group Polyoxyphthalic acid, carboxylic acid modified polyoxygenated oil, methanol modified polyoxygenated oil, epoxy modified polyoxygenated oil, fluorenyl modified polyoxyxide, Fluorine-modified polyfluorene oxide oil, polyether modified polyoxyxene oil, and the like. These flat agents may be used alone or in combination of two or more. The amount of the flat agent used is usually 0.01 to 5 parts by weight based on 100 parts by weight of the curable compound. Commercially available products can be used as the above-mentioned flat agent. Examples of the specific examples include "SH200-100cs", "SH28PA", "SH29PA", "SH30PA", and "ST8 3TA" manufactured by Toray'Dow Corning Silicone Co., Ltd. ", "ST80PA", "ST 9 7 PA," and "ST 8 6 P A'', and "BYK-3 02", "BYK-3 07", "BYK-" manufactured by BYK Japan Co., Ltd. 320" and "BYK-330" and so on. The curable coating composition thus obtained is applied onto the laminate to form a curable coating film, which is then cured to form a cured film. The coating of the curable coating composition can be, for example, by a bar coating method, a micro gravure coating method, a roll coating method, a flow coating method, a dip coating method, a spin coating method, a die coating method, or the like. This is carried out by a coating method such as a spray coating method. The hardening of the hard coating film can be carried out by irradiation of an energy ray or heating depending on the type of the curable coating composition. The energy line at the time of hardening by the irradiation of the energy ray may, for example, be an ultraviolet ray, an electron beam, or a radiation, etc., and the conditions such as the intensity or the irradiation time may be appropriately determined depending on the type of the curable coating composition. select. Further, when hardening by heating, conditions such as temperature or time may be appropriately selected depending on the kind of the hardenable coating composition, but the heating temperature is generally preferably 10 (TC) without causing deformation of the laminate. When the curable coating composition contains a solvent, the curable coating film may be cured after the solvent is volatilized, or the solvent may be volatilized and the curable coating film may be cured at the same time. The thickness is preferably 0.5 to 5 Ομιη, particularly preferably 1 to 20 μm. When the thickness of the cured film is small, cracking tends to be less likely to occur, but when it is too small, scratch resistance may be insufficient. If necessary, the surface may be subjected to an anti-reflection treatment by a coating method, a sputtering method, a vacuum deposition method, or the like. Alternatively, the separately prepared anti-reflective sheet may be attached to one or both sides of the laminate. The laminate of the present invention thus obtained can be suitably used for protection of a liquid crystal display, and is particularly suitable for use as a protection for a three-dimensional liquid crystal display. For the use of the protected liquid crystal display, for example, a display screen of a portable information terminal such as a television or a computer display, a mobile phone, a PHS (Personal Handy-phone System), a PD A (Personal Digital Assistant), or the like a window portion of a camera or a portable camera, a display window of a portable game machine, a car navigation system or a portable information terminal, an operation panel of an industrial machine, a touch panel of a portable game machine, etc. The present invention The laminate is particularly suitable for use as a touch panel protection device for a liquid crystal display. When manufacturing a protective sheet for a liquid crystal display from the laminate of the present invention, first, printing, opening, and the like can be performed as necessary. The cutting is performed to a necessary size, and then disposed on the liquid crystal display, so that the liquid crystal display can be effectively protected. In this case, when the hardened film is formed only on one side of the laminate, it is preferable to form one of the hardened films. The side is provided on the front side (viewer side), and one side of the hardened film is not formed on the inner side (liquid crystal display side). The embodiment of the present invention is shown, but the present invention is not limited thereto. The composition of the pressing device used in the following examples and comparative examples is as follows. Extruder 1: using a screw diameter of 65 mm, a single axis, Extruder with vent hole (manufactured by Toshiba Machine Co., Ltd.) • Extruder 2: Extruder with a screw diameter of 4 5 mm 'single shaft and vent hole (manufactured by Hitachi Shipbuilding Co., Ltd.). Layerer: Two types of three-layer distribution type delaminators (manufactured by Hitachi Shipbuilding Co., Ltd.) • Die 3: T-type stamper with a bucket mouth width of 1400 mm and a spout mouth interval imm (Hitachi Shipbuilding Co., Ltd. • First and second cooling rolls 5 and 6: The use of a horizontal type with a surface length of 1 400 mm and a diameter of 300 ηιηιφ is light. More specifically, the first and second cooling rolls 5 and 6 are used, and the first cooling roll 5 is made of a metal elastic roll. In the metal elastic roller, a metal film is disposed so as to cover the outer peripheral surface of the shaft roller -23-201210816, and a fluid is sealed between the shaft roller and the metal film. The shaft roll, the metal film, and the fluid are as follows. Shaft roller: stainless steel Metal film: Mirror metal sleeve made of stainless steel with a thickness of 2 mm Fluid: Oil, by controlling the temperature of the oil, the temperature of the metal elastic roller can be controlled. Specifically, the oil can be heated or cooled by the on and off control of the temperature controller to control the temperature and circulate between the shaft roller and the metal film. The second cooling roll 6 uses a highly rigid metal roll. The surface of the metal roll is a mirror-shaped stainless steel spiral roll. The following two types of resins used in the examples and comparative examples were used. • Resin 1: Sumitomo using heat distortion temperature (Th) 140 °C
Dow股份有限公司製的聚碳酸酯樹脂「Calibre 301-10」 〇 •樹脂2 :使用熱變形溫度（Th ) 1 0(TC之住友化學股 份有限公司製的甲基丙稀酸樹脂「SumipexEX」。 [實施例1〜9及比較例1] <層合板的製作〉 首先，如第1圖所示般地配置擠壓機1、2、壓模3、第 1、第2冷卻輥5、6。並將分層器配置在既定位置。接著藉 由擠壓機1’將作爲樹脂層A顯示於第1表之種類的樹脂進 行熔融混練，並藉由擠壓機2，將作爲樹脂層B顯示於第1 -24- 201210816 表之種類的樹脂進行溶融混練’並分別供給至分層器。以 從擠壓機1供給至分層器之樹脂層A成爲中間層’從擠壓 機2供給至分層器之樹脂層B成爲兩表層之方式進行共擠壓 成形。 然後將從壓模3擠壓出之薄片狀熔融樹脂4，夾持於相 對向地配置之第1冷卻輥5與第2冷卻輥6並進行成形及冷卻 ，而得在樹脂層A的雙面層合樹脂層B且具有第1表所示的 厚度之3層構成的層合板。所得之各層合板上之雙面的樹 脂層B的組成及厚度互爲相同。 第1冷卻輥5的表面溫度爲120 °C，第2冷卻輥6的表面 溫度爲1 3 0 °C。此等溫度爲實際測定各冷卻輥的表面溫度 之値。此外，第1表中之擠壓機1、2的「厚度」，顯示樹 脂層A、B的各厚度，「總厚度」顯示所得之層合板的總 厚度。 <硬化被膜的形成> 所得之層合板中，對於實施例8、9之層合板，係於雙 面形成硬化被膜。首先，係將作爲單體之六丙烯酸二新戊 四醇酯50份、四丙烯酸新戊四醇酯50份，作爲起始劑之 Ciba Specialty Chemicals股份有限公司製的「IRGACURE 184」4.5份、「IRGACURE 907」1.5份，作爲平坦劑之 BYK Japan股份有限公司製的「BYK-307」0.1份之比率， 分別混合於異丁醇125份及1-甲氧基-2 -丙醇125份的溶劑 ，而得硬化性塗料。 -25- 201210816 接著以16號的棒塗佈機，將該硬化性塗料塗佈於實施 例8、9之層合板的雙面，使用120W的高壓水銀燈照射 0.5J/cm2的紫外線使其硬化，而在雙面上形成厚度約 3.5μιη之硬化被膜。 <評估> 對所得之各層合板，評估從斜向觀看時的著色及阻滞 値。各評估方法如下所示，並將該結果一同顯示於第1表 (從斜向觀看時的著色） 首先，上述所得之層合板的雙面中，將任意選擇的單 面與第1偏光板的表面重疊。接著在與層合板的前述單面 爲相反側之另一面上，以使偏光軸呈正交之方式將第2偏 光板與第1偏光板重疊。第1、第2偏光板均使用住友化學 股份有限公司製的「Sumikalan SG」。 然後，一邊以三波長型螢光燈（Mitsubishi Electric Osram股份有限公司製的「Lupica A」的光照射第2偏光板 的表面，一邊從該第2偏光板的斜上方約45度方向，經由 第2偏光板來觀看層合板之另一面的表面，並以目視來觀 察此時該層合板之另一面的表面是否呈現著色。判定基準 係使用下列所述者。 〇：未呈現著色 X :呈現著色 -26- 201210816 (阻滯値） 使用王子計測機器股份有限公司製的自動複折射儀「 KOBRA-CCD/Χ」，測定5 90nm下的阻滯値。 [比較例2 ] 藉由擠壓機1將第1表所示之種類的樹脂進行熔融混練 ，並依序供給至分層器及壓模3。然後將從壓模3擠壓出之 熔融樹脂4，夾持於相對向地配置之第1冷卻輥5與第2冷卻 輥6並進行成形及冷卻，而得具有第1表所示的厚度之單層 構成的樹脂板。 對所得之樹脂板，與前述實施例1 ~9相同，評估從斜 向觀看時的著色及阻滞値。該結果如第1表所示。 -27- 201210816 【第1表】 擠壓機1 擠壓機2 總厚度 硬化 被膜 從斜向 觀看時 的著色 阻滯値 樹脂層A 厚度 樹脂層B 厚度 _ mm 種類 mm mm nm 實施例 1 2 0.22 1 0.04 0.3 Arm m 〇 38 實施例 2 2 0.29 1 0.055 0.4 Arrt. m 〇 33 實施例 3 2 0.36 1 0.07 0.5 無 〇 38 實施例 4 2 0.51 1 0.07 0.65 Μ 〇 24 實施例 5 2 0.66 1 0.07 0.8 無 .〇 23 實施例 6 2 0.71 1 0.07 0.85 無 〇 35 實施例 7 2 0.86 1 0.07 1 ΛττΤ 無 〇 21 實施例 8 2 0.36 1 0.07 0.5 有 〇 41 實施例 9 2 0.71 1 0.07 0.85 有 〇 36 比較例 1 1 0.51 2 0.07 0.65 Anr. m X 40 比較例 2 1 0.5 - - 0.5 Ατττ. X 95 從第1表中可得知，在由甲基丙烯酸樹脂所構成之樹 脂層A的雙面上層合由聚碳酸酯樹脂所構成之樹脂層B而 .成之實施例1〜9，當經由偏光板從斜向觀看表面時，可抑 制著色的呈現。此外，阻滞値亦在50ηπι以下，故可充分 -28- 201210816 地確保可見性。實施例1〜9，即使經由偏光板從正面方向 觀看表面時，可見性亦未降低。 另一方面，在由聚碳酸酯樹脂所構成之樹脂層A的雙 面上層合由甲基丙烯酸樹脂所構成之樹脂層B而成之比較 例1、及由聚碳酸酯樹脂層所構成之單層構成的比較例2， 當經由偏光板從斜向觀看表面時，均呈現著色。 【圖式簡單說明】 第1圖係顯示本發明的一項實施形態之液晶顯示器保 護用層合板的製造方法之槪略說明圖。 【主要元件符號說明】 1、2 :擠壓機 3 :壓模 4 :熔融樹脂 5 :第1冷卻輥 6 :第2冷卻輥 -29-Polycarbonate resin "Calibre 301-10" manufactured by Dow Co., Ltd. 树脂• Resin 2: Heat distortion temperature (Th) 1 0 (SumipexEX, manufactured by Sumitomo Chemical Co., Ltd., TC). [Examples 1 to 9 and Comparative Example 1] <Production of Laminated Plates First, the extruder 1, 2, the stamper 3, and the first and second cooling rolls 5, 6 were placed as shown in Fig. 1 . The layerer is placed at a predetermined position, and then the resin which is the type of the resin sheet A shown in the first table is melt-kneaded by the extruder 1', and is used as the resin layer B by the extruder 2. The resin of the type shown in Tables 1 - 24 to 201210816 is subjected to melt kneading 'and supplied separately to the layerer. The resin layer A supplied from the extruder 1 to the layerer becomes the intermediate layer' supplied from the extruder 2 The sheet-like molten resin 4 extruded from the stamper 3 is sandwiched between the first cooling rolls 5 and the first surface, which are formed by the two layers. 2, the cooling roll 6 is formed and cooled, and the resin layer B is laminated on both sides of the resin layer A and has the first watch The laminate of the three layers having the thickness of the laminate. The composition and thickness of the double-sided resin layer B on each of the obtained laminates are the same. The surface temperature of the first cooling roller 5 is 120 ° C, and the surface of the second cooling roller 6 The temperature is 130 ° C. These temperatures are the actual measurement of the surface temperature of each of the cooling rolls. Further, the "thickness" of the extruders 1 and 2 in Table 1 shows the thicknesses of the resin layers A and B. "Total thickness" shows the total thickness of the obtained laminate. <Formation of hardened film> In the obtained laminate, the laminates of Examples 8 and 9 were formed into a hardened film on both sides. 50 parts of dipentaerythritol hexaacrylate and 50 parts of pentaerythritol tetraacrylate as a monomer, 4.5 parts of "IRGACURE 184" manufactured by Ciba Specialty Chemicals Co., Ltd. as an initiator, and "IRGACURE 907" 1.5. The ratio of 0.1 parts of "BYK-307" manufactured by BYK Japan Co., Ltd. as a flattening agent was mixed with 125 parts of isobutyl alcohol and 125 parts of 1-methoxy-2-propanol to obtain hardening. Paint -25- 201210816 Next, with the No. 16 bar coater, The curable coating was applied to both sides of the laminates of Examples 8 and 9, and was irradiated with an ultraviolet ray of 0.5 J/cm 2 using a 120 W high-pressure mercury lamp to form a hardened film having a thickness of about 3.5 μm on both surfaces. Evaluation> For each of the obtained laminates, evaluate the coloring and retardation 从 when viewed from an oblique direction. Each evaluation method is as follows, and the results are displayed together in the first table (coloring when viewed from an oblique direction) First, In the both surfaces of the laminate obtained above, an arbitrarily selected single surface is overlapped with the surface of the first polarizing plate. Next, the second polarizing plate is overlapped with the first polarizing plate so that the polarization axes are orthogonal to each other on the other side opposite to the one side of the laminate. "Sumikalan SG" manufactured by Sumitomo Chemical Co., Ltd. was used for both the first and second polarizers. Then, the surface of the second polarizing plate is irradiated with light of "Lupica A" manufactured by Mitsubishi Electric Osram Co., Ltd., and the direction of the second polarizing plate is about 45 degrees from the oblique direction of the second polarizing plate. 2 polarizing plate to view the surface of the other side of the laminate, and visually observe whether the surface of the other side of the laminate is colored at this time. The criterion is as follows: 〇: no coloring is rendered X: coloring is presented -26- 201210816 (blocking 値) The automatic refractometer "KOBRA-CCD/Χ" manufactured by Oji Scientific Instruments Co., Ltd. was used to measure the retardation at 5 90 nm. [Comparative Example 2] By extruder 1 The resin of the type shown in the first table is melt-kneaded and sequentially supplied to the layerer and the stamper 3. Then, the molten resin 4 extruded from the stamper 3 is placed in the opposite direction. 1 The cooling roll 5 and the second cooling roll 6 were molded and cooled to obtain a resin plate having a single layer having the thickness shown in Table 1. The obtained resin plate was evaluated in the same manner as in the above Examples 1 to 9. Coloring and blocking when viewed from an oblique direction値The result is shown in Table 1. -27- 201210816 [Table 1] Extruder 1 Extruder 2 Total thickness hardened film Coloring retardation when viewed from an oblique direction 値 Resin layer A Thickness resin layer B Thickness _ mm Species mm mm nm Example 1 2 0.22 1 0.04 0.3 Arm m 〇 38 Example 2 2 0.29 1 0.055 0.4 Arrt. m 〇 33 Example 3 2 0.36 1 0.07 0.5 No 〇 38 Example 4 2 0.51 1 0.07 0.65 Μ 〇 24 Example 5 2 0.66 1 0.07 0.8 No. 〇 23 Example 6 2 0.71 1 0.07 0.85 No 〇 35 Example 7 2 0.86 1 0.07 1 ΛττΤ No 〇 21 Example 8 2 0.36 1 0.07 0.5 〇 41 Example 9 2 0.71 1 0.07 0.85 〇36 Comparative Example 1 1 0.51 2 0.07 0.65 Anr. m X 40 Comparative Example 2 1 0.5 - - 0.5 Ατττ. X 95 It can be seen from Table 1 that it is composed of methacrylic resin. The resin layer B composed of a polycarbonate resin is laminated on both sides of the resin layer A. In Examples 1 to 9, when the surface is viewed obliquely from the polarizing plate, the appearance of coloring can be suppressed. The stagnation is also below 50ηπι, so it can be fully -28- 201210816 Visibility. In Examples 1 to 9, the visibility was not lowered even when the surface was viewed from the front direction via the polarizing plate. On the other hand, a comparative example 1 in which a resin layer B composed of a methacrylic resin is laminated on both surfaces of a resin layer A made of a polycarbonate resin, and a single sheet composed of a polycarbonate resin layer are formed. In Comparative Example 2 in which the layers were formed, coloring was exhibited when the surface was viewed obliquely from the polarizing plate. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic explanatory view showing a method of manufacturing a laminate for liquid crystal display protection according to an embodiment of the present invention. [Explanation of main component symbols] 1, 2: Extruder 3: Die 4: Molten resin 5: 1st cooling roll 6: 2nd cooling roll -29-