201140146 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種用於光可定向層中定向處理之残麻 黏膜、層合膜、光學濾光片或立體影像顯示裝置之製備^ 法。 本案主張2010年1月22日向韓國智慧財產局提申韓國 專利申請案號2010-0005907之優先權，其内容合併於此作 為參考。 【先前技術】 立體影像顯示裝置係一種可顯示具有深度感影像之顯 示裝置。習知顯示裝置只會顯示二維平面（即視覺顯示平面） 之資訊’故其於資訊遺失方面有嚴重受限之問題，且尤其 會遺失顯示物體之深度方面的資訊。 立體影像顯示裝置可三維度地顯示物體，其不僅僅顯 不二維平面，其亦顯示空間態，故可顯示物體之原始三維 資訊，進而顯示更逼真的資訊。 顯示三維影像之技術可分成眼鏡式及無眼鏡式。又， 眼鏡式又可分成偏振眼鏡式及液晶快門眼鏡式（L C s h u 11 e r glass) ’而無眼鏡式則可分為立體/多視點兩眼視差式 (stereoscopic/multi-view point bin〇cular 如州❼）、體積式 (volumetric)、全像式（holographic)及其類似樣式。 【發明内容】 【技術問題】 201140146 本發明係為了提供用於光可定 向層申定向處理之咸 壓黏膜、層合膜、光學濾光片或立处之戍 方法。 々a立體影像顯不裝置之製備 【技術解決方案】 本發明係關於用於光可定向層中定向處 膜1包括形成有至少一透光部及至少一遮光部之基板。 感壓黏膜詳述如下。 期門使"V具Λ實施财，該錢_可於定向處理之製程 其中糟由對光可定向層進行照光，可使 向層疋向。於-具體實施例中，感絲膜可用於^向處理， 以於光可定向層中形成包含至少一第一定向區及至少一第 :定==，其中第一定向區具有第一定向方向，而 形成包含至少兩個且有相里定…第一疋向方向，或 相異疋向方向之區域。於定向處理 一透光部及至少—遮光部之基板可作為 尤其’當該膜為感壓黏膜時，可將該膜貼附於 層上，以進行定向處理，亦即，基板 間隙幾乎不存在’故可避免產生非定向區域，以形 成具有rfj準確度之定向圖案。 右錄·，·Γ此二吏用之「光可定向層」可包括該領域常使用之所 八突可疋向層’其包括可藉由照光而沿著預定方向定向 2於一具體實施例中’光可定向層可為能藉由偏振 ^外光（如線偏振紫外光）照射而定向之可定向層，而後光可 疋向層可錯由與液晶化合物相互作用而引發可形成於可定 201140146 層上之液晶化合物定向。 於-具體實施例中，光可定向層可為使用於立體影像 顯示裝置用之光學濾光片中的可定向層。立體影像顯示裝 置用之光學渡光）ί舉例可包括立體影像顯示裝置用之規則 補償膜（patterned retarder)。 於此使用之「透光部」-詞係指由基板上側或下側照 光而可使光穿透之基板區域，而於此使用之「遮光部」一 詞係指由基板上側或下側照光而無法使光穿透之基板區 域。 圖1係顯示包括於感壓黏膜之基板⑽實施態樣剖視 圖。如圖1所示，感壓黏膜之基板（1〇)包括至少一透光部（τ) 及至少-遮光部(Β)，其中由厚度方向照射之光可穿透此透 光部，而遮光部則可阻擋或吸收光。光以_ i中之箭頭表 不。基板中可分別形成一或兩個以上透光部及一或兩個以 上遮光部。 透光部及遮光部之形狀並無特定限制，其可依據光可 疋向層所需之定向圖案來形成。 於-具體實施中，透光部及遮光部可為沿同一方向延 荔—条狀形狀，且可於條狀之短邊方向上交替排列。圖2 .眞丁由基板上側看到的基板示意態樣圖。於 =光部⑺與遮光部（B)分別具有沿同_方向延伸之純) 且於條狀之短邊方向上交替排列。 於透光部（T)與遮光部（B)分別具有沿 條㈣狀且於條狀之短邊方向上交㈣列之例子中^; 201140146 部位間之間距（即遮光部寬度與相鄰遮光部間隔之總和）及 相鄰遮光部之間隔並無特定限制，其可依據光可定向層之 用途來控制。圖2將間距標示為p，間隔標示為v。 舉例說明’當光可定向層為使用於立體影像顯示裝置 中光學濾光片之光可定向層時，透光部及遮光部的間距可 為形成右眼影像之單元畫素或形成左眼影像之單元晝素寬 度的兩倍。傳統上，如圖6所示，立體影像顯示裝置可包 括用於顯不影像之元件，如顯示面板（62)，及光學濾光片 (63)，如規則補償膜。又，承上所述，用於顯示影像之元件 可包括一用於形成左眼影像之單元畫素（左眼單元畫素 (UL))及一用於形成右眼影像之單元畫素（右眼單元畫素 (UR)) ’兩者皆分別具有沿同一方向延伸之條狀形狀且於 條狀短邊之方向上交替排列，如圖3所示。如上所述，當 立體影像顯示裝置之光學濾光片使用塗佈有感壓黏膜之光 可定向層時，間距（P)之數值較佳係具有顯示影像元件中單 元畫素（UR)或（UL)寬度之兩倍相等值。於圖3中，單元畫 素（UR)或（UL)之寬度標示為wi或W2。 於此使用之「相等值」包括不喪失本發明優點範圍内 之大致相等值，其包含各種因素（如製程物差及變化）所導致 之些許誤差。 舉例說明，具有單元畫素寬度兩倍相等值之間距包括 接近±60 μπι内之誤差’接近士4〇 μιη内之誤差，或接近±2〇 μηι内之誤差。 於本發明中’如上所述，可控制基板之間距，避免於 201140146 定向處理後產生非定向區域’並形成具有高準確度之定向 圖案。因此，當立體影像顯示裝置使用包含上述可定向層 之光學慮光片時’可避免裝置中產生所謂的串擾。 此外，承上所述’相鄰遮光部間之間隔（如圖2中的（v)) 較佳係具有立體影像顯示裝置之顯示影像元件中單元畫素 (UR)或（UL)寬度（如圖3中（W1)或（W2))之兩倍相等值。如 上所述，於此使用之「相等值」—詞意指大致相等的值， 例如，其可包含接近土3〇 μπ1内之誤差，接近±2〇 内之誤 差’或接近±10μπι内之誤差。 於本發明中，可將間隔控制到與單元晝素寬度相等， 俾可避免定向處理後產生非定向區域，以形成具有高準確 度之定向圖案。又，當立體影像顯示裝置中使用包括上述 可定光層之光學渡光片時，偏光變換部（p〇iarizati〇n tmnsfoming part)可各自以高準確度對應單元畫素故 免於裝置中產生所謂的串擾。 於本發明之基板中，透光部及遮光部的形狀並不限於 上述條狀’纟可依據顯#影像元件之形狀或光可定向層可 應用之其他應用進行改變。 +歹、兒明’當光可定向層為上述立體影像顯示裝置中 光學渡光片使用之光可定向層，且顯示影像it件t形成左 眼影像及右眼影像之單元晝素形成交叉條㈣案時，=光 :及^部亦可形成對應於單元畫素圖案之交又條狀圖 同古二例中’透光部及遮光部之間距及間隔可以上述相 式控制。舉例說明’透光部及遮光部之間距可大致 201140146 相等於單元畫素（形成交又條狀圖案）寬度之兩倍值，而相鄰 遮光部間之間隔亦可與單元晝素寬度大致相等。承上所 述’透光部與遮光部交又條狀_案中之間距及間隔可為縱 向或橫向間距及縱向或橫向間隔，且單元畫素交又條狀圖 案中之早元畫素寬度可為縱向或橫向寬度。 於本發明中’該基板舉例可包括：一透光板，及於板 上形成遮光部之遮光或光吸收墨水。 也就是說，可依據所需圖案，將遮光或光吸收墨水印 至透光板上，以形成遮光部，進而製得基板。 承上所述，透光板係指可使有效量光穿透之板子，其 中所指的光係用來對光可定向層進行定向，如紫外光，而 有效量係指可使光可定向層有效定向之光量。舉例說明， 透光板可為具有低光吸收率之板子，且可為對波長接近 320nm以下之光具有接近10%以下光吸收率之板子。上述 透光板舉例可為纖維素板（如三醋酸纖維素板）或烯烴板（如 由降冰片烯衍生物形成的板子）’但此處可使用之透光板並 不侷限於此，只要其具有適當的透光性質即可。板子的厚 度並無特定限制，其可基於應用、透光率及類似考量來控 制。 如上所述的板子亦可作為保護膜之基板，該保護膜可 用於避免定向膜汙染，並於製備光學濾光片製程期間改善 定向性。於一具體實施例中，遮光部可直接形成於保護二 之基板，因此，該膜不僅可變作保護膜，其亦可作為感壓 黏膜，以當作光罩。據此，藉由於該膜貼附之前後對可定 8 201140146 . 向獏照光之簡單方法，即可增加高準確度之光學濾光片生 產率’無須額外的設備。 於板中形成遮光部之墨水種類並無特定限制，本領域 中已知之任何遮光或光吸收墨水皆可使用。如上所述包 含無機染料（如碳黑、石墨或氧化鋼材）或有機染料（如偶氮 染料或鈦青素染料）之墨水可作為示例性舉例，而上述墨水 了與適^的黏結劑及/或;>谷劑混合後再進行印刷製程。 承上所述，形成遮光部之印刷方法並無特定限制，其 舉例可使用習知印刷方法，如網印或凹版印刷，或喷灑墨 水之選擇性喷印。 在此，墨水的印刷高度可接近0丨μηι至4 μπι，較佳 係接近0.5 μηι至2.0 μπι。然而，印刷高度並不侷限於此。 例如，若印刷高度過低，遮光性則會降低，或印刷高度過 高，則難以將該膜作為保護膜，故印刷高度可基於上述因 素之考量而加以控制。 感壓黏膜更包括一形成於基板至少一側之感壓黏 層，而感壓黏層可用於將基板貼附於光可定向層上。承上 所述，貼附可意指基板與光可定向層間幾乎不存在間隙之 狀態。圖4係示例性感壓黏膜之剖視圖，如圖4所示，感 壓黏膜可包括：一基板（10)，其形成有至少一透光部（τ)及 至少一遮光部（B);以及一感壓黏層（2〇)，其係形成於基板 (10)之一側上。 承上所述’感壓黏層之材料及厚度並無特定限制，其 可考量定向處理條件及類似因素而做適當選擇。例如，感 201140146 壓黏層可包括透光感壓黏劑，其舉例包括丙烯酸感壓黏 劑、氨酯感壓黏劑、聚異丁烯感壓黏劑、橡膠感壓黏劑（如 苯乙烯-丁二烯橡膠，SBR)、聚乙烯醚感壓黏劑、環氧感壓 黏劑、二聚氰胺感壓黏劑、聚酯感壓黏劑、酚類感壓黏劑 或矽感壓黏劑，或包括至少兩種上述材料之混合感壓黏劑。 本發明亦關於一種用於製備光學濾光片之層合膜，其 包括：一基材；形成於基材上之一光可定向層；及貼附於 光可定向層上之一感壓黏膜。 使用於層合膜中之基材種類並無特定限制，其舉例可 使為習知用於光學濾光片之基材。可使用習知玻璃基材或 塑膠基材來作為基材。塑膠基材舉例可為，使用三醋酸纖 維素（TAC)、環烯烴共聚物（C0P)、聚丙烯酸酯（pac)、聚醚 硬（PES)、聚碳酸酯（PC)、聚醚醚酮（PEEK)、聚曱基丙稀酸 曱酯（PMMA)、聚醚醯亞胺（PEI)、聚乙烯萘（pEN)、聚乙烯 對苯二甲酸酯（PET)、聚亞胺（pi)、聚砜（PSF)、聚乙烯醇 (PVA) '聚芳酯（PAR)及/或非晶氟樹脂所製成之塑膠基材。 於一具體實施例中，當光學濾光片為規則補償膜時， 可使用具有（-)c板特性、Re接近1 〇 nm以下（較佳是接近5 nm以下）、Rth接近300 nm以下（較佳是接近i〇〇nm以下， 更佳是接近60 nm以下，尤佳是接近丨5 nm以下）、且折射 率接近1.33至1.53之基材作為塑膠基材。 承上所述，（-)c板特性係指滿足r Nx=Ny>Nz」關係式 之特性’ Re係由「（Nx-Ny)xd」所算得的值，而Rth係由 「{(Nx+Ny)/2-Nz}xd」所算得的值。承上，Νχ意指基材平面 201140146 =軸方向之折射率’Ny意指基材平面沿著快 折射率，而Nz係指基材沿著厚 之 基材厚度。 者厚度方向之折射率’d則是指 舉例說明，當光學遽光片為規則補償膜時，使用 2光學異向性之歸基材可使裝置中之補償膜效能發 到最大並將串擾降至最低，俾使裝置具有優異亮度。又， 使用該類塑膠基材可製得質輕、薄及優異可撓性之光學據 光片。 “ 傳統上，若使用塑膠基材作為光學濾光片之基材，由 於塑膠基材之固有特性，形成溫度、溶劑及/或製備過程中 可定向層收縮現象會對基材造成嚴重影響，故無法形成具 有高準確度之定向圖案。然而’ #由使用本發明感壓黏膜 來進行定向處理’可極致展現塑膠基材之優點，而不會衍 生上述問題。 層合膜中之可定向層種類並無特定限制，可使用本領 域習用之任何種類可定向層。於一具體實施例中，可定向 層可包括一化合物，其係藉由線偏振紫外光所引發之順反 異構化反應、弗瑞斯（Fries)重排反應及/或二聚化反應而決 定其定向方向，而該化合物可依據其定向方向而誘導相鄰 之液晶化合物定向。舉例說明，可定向層可包括一單體、 寡聚物或聚合化合物，其具有選自由偶氮苯（az〇benzene)、 苯乙烯苯（styryl benzene)、香豆素（cumarine)、查耳酮 (chalcone)、敗及肉桂酸酷（cinnamate)所組群組中之至少一 官能基或基團，且較佳可包括具有氟或肉桂酸酯基團之降 201140146 冰片烯樹脂》 將可定向層形成於基材上之方法並無特定限定，兑舉 例可使用習知塗佈方法（如滚筒塗佈、旋轉塗佈或桿棒塗 佈）’將已用適當溶劑稀釋之上述化合物塗佈於基材上。 又，可定向層之塗佈厚度並無特定限制。 於-具體實施例中，光可定向層可為經初次定向處理 之光可定向層。舉例說明’於貼附感壓黏膜前，可使用線 偏振紫外光照料可定向層，錢行初次定向處理。於初 次定向處理中’較佳係使用線偏振紫外光照射可^向層之 整體表面。 右為了使光可$向層定向而進行超過一次的線偏振 紫外光照射，敎向方㈣由最後〜欠㈣振紫外光照射 所決定。據此’錢用具有歡方向之線偏振紫外光對包 含於層合膜中之可定向層進行初次定向，而後，再於貼附 感壓黏膜後，使用線偏振紫外光（其方向與初奴向處理之 線偏振紫外光方向不同)進行第二次定向處理，則可有效形 成包含至少-第一定向區域及至少一第二定向區域之定向 圖案’其中第-定向區域具有第一定向方向，❿第二定向 區域具有與第一定向方向不同的第二定向方向或包含至 少二種具有相異定向方向之區域。 於一具體實施例中，可使用線偏振紫外光進行初次定 向處理’而線偏振紫外光可為線性偏極化之紫外光，其與 形成於感壓黏膜中之透光部及遮光部邊緣交叉形成非直角 之夾胃更佳可為’與形成於感屋黏膜中之透光部及遮光 12 201140146 部邊緣交叉形成大致45度失角之線偏振紫外光。於本發明 中，當定義角度時，其可包含接近±1〇度以内的誤差，接近 ±5度以内的誤差’或接近±3度以内的誤差。於上例中，亦 可使用線偏振紫外光進行第二次定向處理，而第二次定向 處理之線偏振紫外光可為，與形成於感壓黏膜中之透光部 及遮光部邊緣交叉形成非直角夾角之線偏振紫外光。又， 於此例中，第二次定向處理之線偏振紫外光，較佳是具有 與初次定向處理之線偏振紫外光方向形成接近9〇度夾角之 方向。藉由控制初次及第二次定向處理之方向，可提供使 裝置展現絕佳效能之光學據光片。 可將感壓黏膜貼附於已進行初次定向處理或未定向 之光可定向層上，以製得層合膜。於感壓黏膜包括感壓黏 層之例子中’该感壓黏膜可透過感壓黏層而貼附於光可定 向層上。感壓黏膜較佳是緊密貼密於光可定向層上。於此 使用之「緊密貼附」一詞係指感壓黏膜與光可定向層間幾 乎不存在間隙之狀態。藉由將感壓黏膜緊密貼附於光可定 向層上，可避免照射光於間隙間擴散，俾可使具有理想的 均勻強度光照射於光可定向層。亦可避免定向區域間之邊 界模糊不清，防止非定向區域之形成。 本發明亦關於一種使用本發明層合膜製備光學濾光 片之方法。光學;慮光片之製備方法可包括—步驟：經由層 合膜中感壓黏膜之基板，對層合膜之光可定.向進行照光。 當透過感壓黏膜而對光可定向層進行照光時，光只可 穿過感壓黏膜之透光區，故只有對應感壓黏膜透光區的光 13 201140146 可疋向層會進行定向。亦即，可對光可定向層中對應感塵 I膜透光區之區域進行初次定向處理所引發之定向方向進 行改變，或者對光可定向層中對應感壓黏膜透光區之未定 向區域進行定向。 於一具體實施例中，如上所述，光可定向層可為已藉 ^線偏振紫外光進行初次定向處理之光可定向層。線偏振 1外光可為，具有與透光部及遮光部（形成於感壓黏膜中） 邊、彖交又形成非直角夾角方向之線偏振紫外光，更佳可 為’具有與透光部及遮光部（形成於感壓黏膜中）邊緣交又形 成大致45度夾角方向之線偏振紫外光。於此例中，於該製 程中所照射的光可為用於第二找向處理的光，而用於第 二次定向處理的光可為具有與透光部及遮光部（形成於感 壓黏膜中）邊緣交又形成非直角夾角方向之線偏振紫外 光，其亦可與初次定向處理之線偏振紫外光方向形成接近 90度之夾角。 圖5係顯示本發明光學濾光片示例性製備方法之圖 式。如圖5⑷至⑷所示’光學濾光片之製備方法可包括. 形成光可定向層（2)於基材⑴上（圖5⑷）；藉由線偏振紫外 光（箭頭）’對光可定向層（2)進行初次定向（圖5⑻）；將感 壓黏膜（3)貼附於光可定向層⑺上（圖5(e));以及藉由方向 與初次定向處理之線偏振紫外光方向相異之線偏振紫外光 (前頭）’對光可定向層進行第二次定向（圖 =，可於光可定向層中形成定向方向相異之)區;= 201140146 本發明光學濾光片之製備方法可更包括：於照光後移 除感壓黏膜（3)，而後形成液晶層（4)於光可定向層（2)上如 圖5 (e)及（f)之示例性舉例圖式。 承上，形成液晶層（4)之方法並無特定限制，其舉例可 包括：（a)塗佈光可交聯或光可聚合液晶化合物於光可定向 層上，以進行定向，接著（b)對液晶化合物進行光交聯或光 聚合反應。藉由上述處理，可形成液晶化合物定向方向相 異之區域（41)及（42)於光可定向層上。 液晶化合物種類並無特定限制，其可考量光學濾光片 之應用來選擇。舉例說明，當光學濾光片為規則補償膜時， 液晶化合物可為，能依據光可定向層定向圖案定向，而後 經由光交聯或光聚合反應轉換成液晶聚合物層之化合物， 其中液晶聚合物層具有λ/4相延遲特性。使用該類液晶化合 物可製得規則補償膜，其可將照射光分成左旋圓偏振光及 右旋圓偏振光。於此領域中，各種依據光學濾光片應用性 可使用之液晶化合物為已知，而所有上述化合物皆可用於 本發明中。 承上所述，塗佈液晶化合物於光可定向層上後，使液 晶化合物依據光可定向層之定向圖案配向之方法並無特定 限制’其可適當選擇及使用各種已知之配向方法。 之後’可照射適當光’使配向後之液晶化合物進行交 聯或聚合’以形成液晶層(如相延遲層）。 本發明亦關於一種光學濾光片，其包括：一基材；及 —光可定向層，其係形成於基材上且具有至少一第—定向 201140146 區域及至少-第二定向區域，第一定向區域具有第—定向 方向，而帛三定向d域具有與第一定向方向相異之第二定 向方向中光可定向層中相對於光可定向層整體面積之 非定向區域面積比為1 0%以下。 於一具體實施例令’光學遽光片可為立體影像顯示裝 置所使用之光學渡光片，其較佳為立體影像顯示裝置所使 用之規則補償膜。 於上返光學濾光片中，可用之基材及光可定向層可如 上所述。 於光學濾光片中，定向圖案係形成於光可定向層上， 具體地說’包含至少一第一定向區域及至少一第二定向區 域之定向圖案可形成於光可定向層上，其中第—定向區域 經處理而具有第^向方向’而第二定向區域經處理而具 有與第一定位方向相異之第二定向方向。於一具體實施^ 中，第一定向區域與第二定向區域可具有沿同一方向延伸 之條狀^/狀，且可於條狀短邊之方向上交替排列於光可定 向層中。 於光學據光片中，光可定向層中相對於光可定向層整 體表面之非定向區域面積比為10%以下，較佳為5%以下， 更佳為2%以下，舉例說明’於習知定向方法中當光穿過 光可定向層與光罩間之間隙時，會產生如光擴散之現象， 因而形成非定向區域。 然而’於本發明中，可於感壓黏膜（作為光罩）緊密貼 附光可定向層之狀態下進行定向處理，故可將非定向區域 16 201140146 之形成降到最低。 ^ 承上所述，非定向區域之面積比可如下評估。亦即， 右將光學濾光膜置於兩偏光片（其光吸收軸相互垂直）間，使 光學渡光片之定向方向沿著偏光片之光吸收軸適當排列， 再以光源照射偏光片，則只有非定向區域會產生漏光現 象。因此，可於上述狀態下，藉由偏光顯微鏡觀察產生漏 光之區域，以評估非定向區域之面積比。 又，光學濾光片可具有5%以下的串擾比，更佳為 以下。串擾比可由下述通式丨算得。 [通式1]BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preparing a residual mucous membrane, a laminated film, an optical filter or a stereoscopic image display device for directional treatment in a photoalignable layer. The present application claims priority to the Korean Intellectual Property Office of the Korean Patent Office No. 2010-0005907, which is incorporated herein by reference. [Prior Art] A stereoscopic image display device is a display device that can display an image with a sense of depth. Conventional display devices only display information of a two-dimensional plane (i.e., a visual display plane), so that there is a severely limited problem in terms of information loss, and in particular, information on the depth of the displayed object is lost. The stereoscopic image display device can display an object in three dimensions, which not only displays a two-dimensional plane, but also displays a spatial state, so that the original three-dimensional information of the object can be displayed, thereby displaying more realistic information. The technology for displaying three-dimensional images can be divided into glasses type and glasses-free type. In addition, the glasses type can be divided into polarized glasses type and liquid crystal shutter glasses type (LC shu 11 er glass)', while the glasses-free type can be divided into stereoscopic/multi-view point binocular parallax type (stereoscopic/multi-view point bin〇cular State ❼), volumetric (volumetric), holographic and other similar styles. [Disclosure] [Technical Problem] 201140146 The present invention is a method for providing a salt-pressure film, a laminate film, an optical filter or a stand for a photo-alignable layer. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oriented film for use in a photo-orientable layer, comprising a substrate having at least one light-transmissive portion and at least one light-shielding portion. The pressure sensitive mucosa is detailed below. The slogan "V" implements the money, which can be used in the process of directional processing. The illuminating of the light alignable layer can make the layer directional. In a specific embodiment, the photosensitive film can be used for processing to form at least one first orientation zone and at least one first orientation in the photo-alignable layer, wherein the first orientation zone has a first Orienting the direction to form an area comprising at least two and having a phase in the first direction, or a direction in which the direction is different. The substrate for orienting a light transmissive portion and at least the light shielding portion can be used as a special film. When the film is a pressure sensitive film, the film can be attached to the layer for orientation treatment, that is, the substrate gap is almost non-existent. 'Therefore, non-oriented areas can be avoided to form an directional pattern with rfj accuracy. </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> The 'light-orientable layer can be an orientable layer that can be oriented by irradiation with polarized external light (such as linearly polarized ultraviolet light), and the late-lightable layer can be formed by interacting with the liquid crystal compound. Orientation of liquid crystal compounds on the layer 201140146. In a particular embodiment, the photoalignable layer can be an orientable layer for use in an optical filter for a stereoscopic image display device. An example of an optical light pathing device for a stereoscopic image display device may include a patterned retarder for a stereoscopic image display device. The term "light-transmitting portion" as used herein refers to a substrate region through which light can be transmitted from the upper side or the lower side of the substrate, and the term "light-shielding portion" as used herein refers to illumination from the upper side or the lower side of the substrate. A region of the substrate that cannot penetrate light. Fig. 1 is a cross-sectional view showing an embodiment of a substrate (10) included in a pressure sensitive mucosa. As shown in FIG. 1 , the substrate (1〇) of the pressure sensitive mucous membrane includes at least one light transmitting portion (τ) and at least a light blocking portion (Β), wherein light irradiated by the thickness direction can penetrate the light transmitting portion, and the light shielding The part can block or absorb light. Light is indicated by the arrow in _ i. One or two or more light transmitting portions and one or more light blocking portions may be formed in the substrate, respectively. The shape of the light transmitting portion and the light shielding portion is not particularly limited, and it may be formed in accordance with an orientation pattern required for the light permeable layer. In a specific implementation, the light transmitting portion and the light shielding portion may have a strip shape in the same direction, and may be alternately arranged in a short side direction of the strip shape. Figure 2. Schematic illustration of a substrate seen from the upper side of the substrate. The light portion (7) and the light shielding portion (B) have a purity in the same direction as the light shielding portion (B), and are alternately arranged in the short side direction of the strip shape. In the case where the light transmitting portion (T) and the light shielding portion (B) respectively have a strip (four) shape and intersect the (four) column in the short side direction of the strip shape; 201140146 the distance between the portions (ie, the width of the light shielding portion and the adjacent shading) The sum of the portion intervals and the interval between the adjacent light-shielding portions are not particularly limited and may be controlled depending on the use of the light-orientable layer. Figure 2 shows the spacing as p and the spacing as v. For example, when the light orientable layer is a light orientable layer for an optical filter in a stereoscopic image display device, the distance between the light transmitting portion and the light shielding portion may be a unit pixel forming a right eye image or forming a left eye image. The unit is twice the width of the element. Conventionally, as shown in Fig. 6, the stereoscopic image display device may include components for displaying images, such as a display panel (62), and an optical filter (63) such as a regular compensation film. Moreover, as described above, the component for displaying an image may include a unit pixel (left eye unit pixel (UL)) for forming a left eye image and a unit pixel for forming a right eye image (right The eye unit pixel (UR)) 'both have strip shapes extending in the same direction and alternately arranged in the direction of the strip short sides, as shown in FIG. As described above, when the optical filter of the stereoscopic image display device uses a light-orientable layer coated with a pressure sensitive film, the value of the pitch (P) preferably has a unit pixel (UR) or (in the display image element). UL) twice the width of the equivalent value. In Fig. 3, the width of the unit pixel (UR) or (UL) is indicated as wi or W2. As used herein, "equal value" includes substantially equal values that do not detract from the scope of the advantages of the invention, which may include a variety of factors (e.g., process variations and variations). For example, the difference between the two values of the unit pixel width is equal to the error within ±60 μπι, which is close to the error within ±4〇 μιη, or close to ±2〇 μηι. In the present invention, as described above, the distance between the substrates can be controlled to avoid the generation of the non-directional regions after the orientation treatment in 201140146 and to form an orientation pattern with high accuracy. Therefore, when the stereoscopic image display device uses the optical light-receiving sheet including the above-described orientable layer, so-called crosstalk can be prevented from occurring in the device. In addition, the spacing between the adjacent opaque portions (such as (v) in FIG. 2) preferably has a unit pixel (UR) or (UL) width in the display image element of the stereoscopic image display device (eg, Two times equal value of (W1) or (W2) in Fig. 3. As used above, the term "equal value" as used herein means a substantially equal value, for example, it may include an error in the vicinity of 3 〇μπ1, an error within ±2 〇' or an error within ±10 μπι . In the present invention, the interval can be controlled to be equal to the width of the unit cell, and the non-directional area can be prevented from being formed after the orientation processing to form an orientation pattern having high accuracy. Further, when an optical light-passing sheet including the above-mentioned light-fixing layer is used in the stereoscopic image display device, the polarization conversion unit (p〇iarizati〇n tmnsfoming part) can be mutually protected from the device with high accuracy. Crosstalk. In the substrate of the present invention, the shape of the light transmitting portion and the light shielding portion is not limited to the above-described strip shape, and may be changed depending on the shape of the image element or other application to which the light direction layer may be applied. +歹,儿明'When the light orientable layer is the light orientable layer used by the optical light-passing sheet in the above-mentioned stereoscopic image display device, and the image-forming unit t forms a unitary element of the left-eye image and the right-eye image to form a cross-bar (4) At the time of the case, = light: and ^ can also form a bar graph corresponding to the unit pixel pattern. In the same two cases, the distance and interval between the light transmitting portion and the light blocking portion can be controlled by the above phase. For example, the distance between the light transmitting portion and the light blocking portion may be approximately twice the width of the unit pixel (formed as a strip pattern), and the interval between adjacent light blocking portions may be substantially equal to the width of the unit pixel. . In the above-mentioned light-transmitting portion and the light-shielding portion, the distance and interval between the light-transmitting portions and the light-shielding portion may be longitudinal or lateral spacing and longitudinal or lateral spacing, and the elemental pixel width in the unit pixel intersection pattern is Can be vertical or horizontal width. In the present invention, the substrate may include: a light-transmitting plate, and a light-shielding or light-absorbing ink that forms a light-shielding portion on the plate. That is to say, the light-shielding or light absorbing ink can be printed on the light-transmitting plate according to the desired pattern to form a light-shielding portion, thereby producing a substrate. As mentioned above, a light-transmissive plate is a plate that allows an effective amount of light to pass through, wherein the light system is used to orient the light-orientable layer, such as ultraviolet light, and the effective amount is to direct the light. The amount of light that is effectively oriented by the layer. For example, the light-transmitting plate may be a plate having a low light absorption rate, and may be a plate having a light absorption rate of approximately 10% or less for light having a wavelength close to 320 nm or less. The light-transmitting plate may be exemplified by a cellulose plate (such as a cellulose triacetate plate) or an olefin plate (such as a plate formed of a norbornene derivative). However, the light-transmitting plate usable here is not limited thereto, as long as It has a suitable light transmitting property. The thickness of the board is not specifically limited and can be controlled based on application, light transmittance, and the like. The board as described above can also be used as a substrate for a protective film which can be used to avoid alignment film contamination and improve the orientation during the preparation of the optical filter process. In a specific embodiment, the light shielding portion can be directly formed on the substrate of the protective second. Therefore, the film can be used not only as a protective film but also as a pressure sensitive film to serve as a light mask. Accordingly, the high-accuracy optical filter productivity can be increased by the simple method of illuminating the film before and after the film attachment. No additional equipment is required. The type of ink forming the light-shielding portion in the sheet is not particularly limited, and any light-shielding or light-absorbing ink known in the art can be used. The ink containing an inorganic dye (such as carbon black, graphite or oxidized steel) or an organic dye (such as an azo dye or a titanium phthalocyanine dye) as described above can be exemplified as an example, and the above-mentioned ink and the appropriate adhesive and/or Or; > the mixture is mixed before the printing process. As described above, the printing method for forming the light-shielding portion is not particularly limited, and it can be exemplified by a conventional printing method such as screen printing or gravure printing, or selective printing by spraying ink. Here, the printing height of the ink may be close to 0 丨μηι to 4 μπι, preferably close to 0.5 μηι to 2.0 μπι. However, the printing height is not limited to this. For example, if the printing height is too low, the light-shielding property is lowered, or the printing height is too high, it is difficult to use the film as a protective film, so the printing height can be controlled based on the above considerations. The pressure sensitive adhesive layer further includes a pressure sensitive adhesive layer formed on at least one side of the substrate, and the pressure sensitive adhesive layer can be used to attach the substrate to the light orientable layer. As described above, the attachment may mean a state in which there is almost no gap between the substrate and the photo-orientable layer. 4 is a cross-sectional view showing an exemplary piezoelectric film, as shown in FIG. 4, the pressure sensitive film may include: a substrate (10) formed with at least one light transmitting portion (τ) and at least one light blocking portion (B); A pressure-sensitive adhesive layer (2〇) is formed on one side of the substrate (10). There is no particular limitation on the material and thickness of the pressure-sensitive adhesive layer, which can be appropriately selected in consideration of the directional processing conditions and the like. For example, the feeling 201140146 pressure-adhesive layer may include a light-transmitting pressure-sensitive adhesive, and examples thereof include an acrylic pressure-sensitive adhesive, a urethane pressure-sensitive adhesive, a polyisobutylene pressure-sensitive adhesive, and a rubber pressure-sensitive adhesive (such as styrene-butyl). Diene rubber, SBR), polyvinyl ether pressure adhesive, epoxy pressure adhesive, melamine pressure adhesive, polyester pressure adhesive, phenolic pressure sensitive adhesive or crepe pressure adhesive Or a mixed sensitizing adhesive comprising at least two of the above materials. The invention also relates to a laminated film for preparing an optical filter, comprising: a substrate; a photoalignable layer formed on the substrate; and a pressure sensitive film attached to the photoalignable layer . The kind of the substrate used in the laminated film is not particularly limited, and it can be exemplified as a substrate which is conventionally used for an optical filter. A conventional glass substrate or a plastic substrate can be used as the substrate. The plastic substrate may be exemplified by using cellulose triacetate (TAC), cyclic olefin copolymer (C0P), polyacrylate (pac), polyether hard (PES), polycarbonate (PC), polyetheretherketone ( PEEK), polymethyl phthalate (PMMA), polyether phthalimide (PEI), polyethylene naphthalene (pEN), polyethylene terephthalate (PET), polyimine (pi), A plastic substrate made of polysulfone (PSF), polyvinyl alcohol (PVA) 'polyarylate (PAR) and/or amorphous fluororesin. In a specific embodiment, when the optical filter is a regular compensation film, the (-)c plate characteristic can be used, Re is close to 1 〇 nm or less (preferably close to 5 nm or less), and Rth is close to 300 nm or less ( Preferably, the substrate is close to i〇〇nm, more preferably close to 60 nm, and particularly preferably close to 丨5 nm, and the substrate having a refractive index close to 1.33 to 1.53 is used as the plastic substrate. As stated above, the (-)c plate characteristic refers to the characteristic that satisfies the relationship of r Nx=Ny>Nz", the value of Re is calculated by "(Nx-Ny)xd", and the Rth is determined by "{(Nx) +Ny)/2-Nz}xd" calculated value. By reference, Νχ means the substrate plane 201140146 = the refractive index 'Ny in the axial direction means that the substrate plane is along the fast refractive index, and Nz means the thickness of the substrate along the thick substrate. The refractive index 'd in the thickness direction is an example. When the optical calender is a regular compensation film, the use of the 2 optical anisotropy substrate can maximize the compensation film performance in the device and reduce the crosstalk. To the lowest, the device has excellent brightness. Moreover, optical materials of such a light, thin and excellent flexibility can be obtained by using such a plastic substrate. “Traditionally, if a plastic substrate is used as the substrate of the optical filter, due to the inherent characteristics of the plastic substrate, the formation temperature, solvent and/or the shrinkage of the directional layer during the preparation process may seriously affect the substrate, so It is impossible to form an orientation pattern with high accuracy. However, '# using the pressure sensitive film of the present invention for orientation treatment' can extremely exhibit the advantages of the plastic substrate without deriving the above problems. The type of the alignable layer in the laminated film Any type of orientable layer that is conventional in the art may be used without particular limitation. In one embodiment, the orientable layer may comprise a compound which is a cis-trans isomerization reaction initiated by linearly polarized ultraviolet light, Fries rearranges the reaction and/or dimerization reaction to determine the orientation direction, and the compound can induce the orientation of adjacent liquid crystal compounds according to its orientation direction. For example, the orientable layer may comprise a monomer. , an oligomer or a polymeric compound having a selected from the group consisting of azobenzene, styryl benzene, cumarine, chalcone (chalcon) e), at least one functional group or group in the group of cinnamate, and preferably may include a drop having a fluorine or cinnamate group 201140146 norbornene resin. The method on the substrate is not particularly limited, and the above-mentioned compound which has been diluted with a suitable solvent can be applied to the substrate by a conventional coating method such as roll coating, spin coating or rod coating. Further, the coating thickness of the orientable layer is not particularly limited. In a specific embodiment, the photo-orientable layer may be a photo-orientable layer that has been subjected to initial orientation treatment. For example, before attaching the pressure-sensitive adhesive film, The linearly polarized ultraviolet illuminating material can be used to orient the layer, and the first directional treatment is performed. In the initial directional processing, it is preferred to use linearly polarized ultraviolet light to illuminate the entire surface of the layer. Right to make the light alignable to the layer. Performing more than one linearly polarized ultraviolet light irradiation, the side direction (4) is determined by the last ~ under (four) vibrating ultraviolet light. According to this, the money is used to have an oriented layer in the laminated film. Initial setting Then, after attaching the pressure sensitive mucous membrane, using the linearly polarized ultraviolet light (the direction is different from the direction of the linear polarized ultraviolet light processed by the primary slave), the second orientation treatment can be effectively formed to include at least the first An orientation pattern of the orientation region and the at least one second orientation region, wherein the first orientation region has a first orientation direction, and the second orientation region has a second orientation direction different from the first orientation direction or comprises at least two a region of distinct orientation direction. In one embodiment, linearly polarized ultraviolet light may be used for initial orientation treatment' while linearly polarized ultraviolet light may be linearly polarized ultraviolet light, which is formed in the pressure sensitive mucosa. Preferably, the edge of the light portion and the light-shielding portion intersect to form a non-orthogonal angle. The stomach may be a linearly polarized ultraviolet light that intersects with the light-transmissive portion formed in the sensory mucosa and the edge of the light-shielding 12 201140146 to form a substantially 45-degree angle of loss. In the present invention, when defining an angle, it may include an error within ±1〇, an error within ±5° or an error within ±3°. In the above example, the second directional treatment may be performed using linearly polarized ultraviolet light, and the linearly polarized ultraviolet light of the second directional treatment may be formed by intersecting with the edge of the light transmitting portion and the light shielding portion formed in the pressure sensitive mucosa. Linearly polarized ultraviolet light with a non-orthogonal angle. Further, in this example, the linearly polarized ultraviolet light of the second orientation treatment preferably has a direction which is close to 9 〇 with the direction of the linearly polarized ultraviolet light of the initial alignment treatment. By controlling the direction of the initial and second orientation processing, an optical light film that provides excellent performance of the device can be provided. The pressure sensitive film may be attached to a light orientable layer that has been subjected to primary orientation treatment or unoriented to produce a laminate film. In the case where the pressure sensitive adhesive film includes a pressure sensitive adhesive layer, the pressure sensitive adhesive film can be attached to the light alignable layer through the pressure sensitive adhesive layer. The pressure sensitive mucosa is preferably closely adhered to the photoalignable layer. The term "closely attached" as used herein refers to a state in which there is almost no gap between the pressure sensitive film and the light orientable layer. By attaching the pressure sensitive adhesive film to the light alignable layer, the diffusion of the illuminating light between the gaps can be avoided, and the light having the desired uniform intensity can be irradiated onto the light alignable layer. It is also possible to avoid blurring of the boundaries between the orientation areas and to prevent the formation of non-directional areas. The invention also relates to a method of making an optical filter using the laminated film of the present invention. The method of preparing the optical sheet may include the step of: illuminating the light of the laminated film through the substrate of the laminated film in which the film is pressure-sensitive. When the light-orientable layer is illuminated through the pressure sensitive mucus, the light can only pass through the light-transmissive area of the pressure-sensitive adhesive film, so that only the light corresponding to the light-transmissive area of the pressure-sensitive adhesive film can be oriented. That is, the orientation direction caused by the initial orientation treatment of the region of the light-transmissive layer corresponding to the light-transmissive I film may be changed, or the unoriented region of the light-sensitive layer of the light-sensitive layer may be changed. Orientation. In one embodiment, as described above, the photo-orientable layer can be a photo-alignable layer that has been subjected to a primary orientation treatment by linearly polarized ultraviolet light. The linearly polarized light may be a linearly polarized ultraviolet light having a direction opposite to the light transmitting portion and the light blocking portion (formed in the pressure sensitive film), and forming a non-orthogonal angle, and more preferably 'having a light transmitting portion. And the light shielding portion (formed in the pressure sensitive mucous membrane) and the edge intersection form a linearly polarized ultraviolet light of an angle of about 45 degrees. In this example, the light irradiated in the process may be light for the second direction finding process, and the light used for the second direction process may have a light transmitting portion and a light blocking portion (formed in the pressure sensitive portion). In the mucosa, the edge intersection forms a linearly polarized ultraviolet light in a non-orthogonal angle direction, which can also form an angle of nearly 90 degrees with the direction of the linearly polarized ultraviolet light of the initial orientation treatment. Fig. 5 is a view showing an exemplary preparation method of the optical filter of the present invention. As shown in Figures 5(4) to (4), the method of preparing an optical filter may include: forming a photo-orientable layer (2) on the substrate (1) (Fig. 5 (4)); orienting the light by linearly polarizing ultraviolet light (arrow) Layer (2) is initially oriented (Fig. 5 (8)); pressure sensitive mucosa (3) is attached to light-orientable layer (7) (Fig. 5(e)); and linearly polarized ultraviolet direction by direction and initial orientation treatment The distinct linearly polarized ultraviolet light (front head)' is oriented a second time to the photoalignable layer (Fig. = different orientation directions can be formed in the photoalignable layer); = 201140146 optical filter of the present invention The preparation method may further comprise: removing the pressure sensitive film (3) after illuminating, and then forming a liquid crystal layer (4) on the light alignable layer (2) as exemplified in FIG. 5 (e) and (f) . The method of forming the liquid crystal layer (4) is not particularly limited, and examples thereof may include: (a) coating a photocrosslinkable or photopolymerizable liquid crystal compound on the photoalignable layer for orientation, and then (b) The photo-crosslinking or photopolymerization of the liquid crystal compound. By the above treatment, regions (41) and (42) in which the alignment directions of the liquid crystal compounds are different can be formed on the photoalignable layer. The type of the liquid crystal compound is not particularly limited, and it can be selected in consideration of the application of the optical filter. For example, when the optical filter is a regular compensation film, the liquid crystal compound may be a compound which can be oriented according to the orientation pattern of the photoalignable layer and then converted into a liquid crystal polymer layer by photocrosslinking or photopolymerization, wherein the liquid crystal is polymerized. The layer has a λ/4 phase delay characteristic. Using this type of liquid crystal compound, a regular compensation film can be obtained which can separate the irradiation light into left-handed circularly polarized light and right-handed circularly polarized light. In the field, various liquid crystal compounds which can be used depending on the optical filter application are known, and all of the above compounds can be used in the present invention. As described above, the method of aligning the liquid crystal compound with the alignment pattern of the photo-alignable layer after coating the liquid crystal compound on the photo-alignable layer is not particularly limited, and various known alignment methods can be appropriately selected and used. Thereafter, the appropriate liquid light can be irradiated to crosslink or polymerize the aligned liquid crystal compound to form a liquid crystal layer (e.g., a phase retardation layer). The invention also relates to an optical filter comprising: a substrate; and a photoalignable layer formed on the substrate and having at least one first-oriented 201140146 region and at least a second orientation region, first The orientation area has a first orientation direction, and the third orientation d domain has a second orientation direction different from the first orientation direction. The area ratio of the non-oriented area of the light orientable layer relative to the entire area of the light orientable layer is 10% or less. In an embodiment, the optical calendering sheet can be an optical light-passing sheet used in a stereoscopic image display device, which is preferably a regular compensation film used in a stereoscopic image display device. In the upper optical filter, the substrate and photoalignable layer that can be used can be as described above. In the optical filter, an orientation pattern is formed on the photo-orientable layer, and specifically, an orientation pattern including at least one first alignment region and at least one second alignment region may be formed on the photo-orientable layer, wherein The first orientation region is processed to have a second orientation direction and the second orientation region is processed to have a second orientation direction that is different from the first orientation direction. In a specific implementation, the first orientation area and the second orientation area may have strip shapes extending in the same direction, and may be alternately arranged in the light alignable layer in the direction of the strip short sides. In the optical light-receiving sheet, the non-oriented area ratio of the light-orientable layer to the entire surface of the light-orientable layer is 10% or less, preferably 5% or less, more preferably 2% or less, for example, In the known orientation method, when light passes through the gap between the light-orientable layer and the reticle, a phenomenon such as light diffusion occurs, thereby forming a non-directional region. However, in the present invention, the orientation treatment can be performed in a state where the pressure sensitive film (as a photomask) is closely attached to the photoalignable layer, so that the formation of the non-oriented region 16 201140146 can be minimized. ^ As stated above, the area ratio of non-directional areas can be evaluated as follows. That is, the right optical filter film is placed between the two polarizers (the light absorption axes are perpendicular to each other), so that the orientation direction of the optical light guide sheets is appropriately arranged along the light absorption axis of the polarizer, and then the polarizer is irradiated with the light source. Only non-directional areas will cause light leakage. Therefore, in the above state, the area where light leakage occurs can be observed by a polarizing microscope to evaluate the area ratio of the non-oriented area. Further, the optical filter may have a crosstalk ratio of 5% or less, more preferably the following. The crosstalk ratio can be calculated from the following formula 丨. [Formula 1]
Xt = (XTL + Xtr)/2 於通式1，Χτ代表應用光學濾光片之立體影像顯示裝 置的串擾比，XTL代表應用光學濾光片之立體影像顯示裝置 左眼所觀察到的串擾比，而Xtr代表應用光學濾光片之立 體景> 像顯示裝置右眼所觀察到的串擾比。 於通式1，XTL及TTR可分別由下述通式2及3算得。 [通式2]Xt = (XTL + Xtr)/2 in the general formula 1, ττ represents the crosstalk ratio of the stereoscopic image display device to which the optical filter is applied, and XTL represents the crosstalk ratio observed by the left eye of the stereoscopic image display device to which the optical filter is applied And Xtr represents the stereoscopic view of the application optical filter> like the crosstalk ratio observed by the right eye of the display device. In Formula 1, XTL and TTR can be calculated from the following Formulas 2 and 3, respectively. [Formula 2]
Xtl - {(L(lb-rw)-L(lb.RB)/(l(LW.RB)-L(LB.RB))} X 1 〇q [通式3] ^tr - {(L(lw-rb)-L(Lb.RB) /(L(Lb.RW)-L(LB.RB))} x 1 qq 於通式2及3中，代表應用光學遽、光片之立體 影像顯示裝置中左眼晝素呈現黑色而右眼晝素呈現白色時 所估得的亮度，L(lb-rb)代表應用光學濾光片之立體影像顯 不裝置中左眼畫素及右眼晝素呈現黑色時所估得的亮度， 而L(lw-RB>代表應用光學濾光片之立體影像顯示裳置中左 201140146 眼畫素呈現白色而右眼畫素呈現黑色時所估得的直卢 承上，計算上述通式2及3所需之亮度評估=並益 特定限制’其可使用本領域已知之習知方法測得。 於本發明中，由於光可定向層可使用上述感塵黏膜來 進仃定向’故可避免形成非定向區域，進而提供具有低串 擾比之光學濾光片。 一本發明之光學濾光片可更包括一液晶層，其係形成於 ，可定向層上。此外’當光學遽光片為規則補償膜時，液 晶層可為相延遲層。於一具體實施例中，相延遲層可為具 有λ/4延遲性之相延遲層。於相延遲層中，可依據其下方光 可定向層之定向圖案，形成包含至少一第一區域及至少一 第二區域之圖案，其中第一區域具有第一方向之第一慢 軸，而第一區域具有第二方向（與第一慢軸方向相異）之第二 慢軸。此外，舉例說明，第一及第二區域可具有沿同一方 向延伸之條狀形狀，且可於條狀短邊之方向上交替排列， 如圖2所示。 承上’第一區域之第一慢軸方向可與第一及第二區域 邊緣交叉形成非直角夾角’例如，可與第一及第二區域邊 緣交叉形成大約45度夾角。又’第二區域之第二慢軸方向 可與第一及第二區域邊緣交叉形成非直角夾角，並與第一 慢軸方向形成接近90度夾角。 當將具有λ/4延遲性及慢軸關係式之相延遲層應用於 立體影像顯示裝置時，該相延遲層可分別形成左旋圓偏振 光及右旋圓偏振光。 201140146 本發明亦關於一種包括上述光學濾光片之立體影像 顯示裝置。 於一具體實施例中’光學濾光片可為規則補償膜，而 立體影像顯示裝置可為偏振眼鏡式立體影像顯示裝置。 於上述立體影像顯示裝置t，構成該裝置之元件或操 作7L件並無特定限制，所有習知裝置種類皆可應用，只要 該裝置包括本發明光學濾光片即可。 圖6為具體實施例之示例性裝置剖視圖。 該顯示裝置（60)可為偏振眼鏡式，其可藉由放置偏振 眼鏡而將三維度的影像顯示至觀看者（圖未示）。_示裝置 ⑽)可由依序排列之背光單元（61)、顯示面板（62)(如液晶顯 不面板）及補償膜（63)所構成。承上所述，補償膜⑽可為本 發明之光學渡光片，其可包括：一基材（631); 一光可定向 層(未不於圖6中），其係形成於基材上；以及一液晶声 形成於光可定向層上且具有上述第-區域㈣八) 該液晶層㈣)可為相延遲層。於顯示 =1;卜補償膜(63)之表面為影像顯示表面，且係朝向 外’於具體實施例中，該顯示Xtl - {(L(lb-rw)-L(lb.RB)/(l(LW.RB)-L(LB.RB)))) X 1 〇q [Formula 3] ^tr - {(L( Lw-rb)-L(Lb.RB) /(L(Lb.RW)-L(LB.RB))} x 1 qq in the formulas 2 and 3, representing a stereoscopic image display using an optical ray and a light sheet The brightness of the left eye sputum in the device is black and the right eye fluorescein is white, and L(lb-rb) represents the left eye pixel and right eye sputum in the stereoscopic imaging device using the optical filter. The brightness is estimated when black is displayed, and L (lw-RB> represents the stereoscopic image of the applied optical filter. The left eye of the 201140146 eye is white and the right eye is black. The brightness evaluation required to calculate the above formulas 2 and 3 = and the specific limitation ' can be measured using a conventional method known in the art. In the present invention, the above-mentioned dust-sensitive mucosa can be used for the photo-orientable layer. In order to avoid the formation of non-directional regions, an optical filter having a low crosstalk ratio can be avoided. An optical filter of the present invention can further comprise a liquid crystal layer formed on the orientable layer. In addition 'when the optical twilight film is a rule In the case of a film, the liquid crystal layer may be a phase retardation layer. In one embodiment, the phase retardation layer may be a phase retardation layer having a retardation of λ/4. In the phase retardation layer, the orientation of the photoalignable layer underneath may be used. a pattern forming a pattern including at least one first region and at least a second region, wherein the first region has a first slow axis of the first direction and the first region has a second direction (different from the first slow axis direction) The second slow axis. Further, by way of example, the first and second regions may have strip shapes extending in the same direction and may be alternately arranged in the direction of the strip short sides, as shown in Fig. 2. The first slow axis direction of the first region may intersect with the first and second region edges to form a non-orthogonal angle 'for example, may intersect with the first and second region edges to form an angle of about 45 degrees. And 'the second region's second The slow axis direction may intersect the first and second region edges to form a non-orthogonal angle and form an angle of approximately 90 degrees with the first slow axis direction. When applying a phase retardation layer having a λ/4 retardation and a slow axis relationship Stereoscopic image display device The phase retardation layer can respectively form left-handed circularly polarized light and right-handed circularly polarized light. 201140146 The present invention also relates to a stereoscopic image display device including the above optical filter. In one embodiment, the 'optical filter can be a rule. The three-dimensional image display device can be a polarized glasses type three-dimensional image display device. The above-mentioned three-dimensional image display device t has no particular limitation on the components or the operation of the device, and all the conventional device types can be applied as long as The device comprises the optical filter of the present invention. Figure 6 is a cross-sectional view of an exemplary device of a specific embodiment. The display device (60) may be a polarized glasses type, which can display a three-dimensional image by placing polarized glasses. To the viewer (not shown). The display device (10) can be constituted by a backlight unit (61), a display panel (62) (such as a liquid crystal display panel), and a compensation film (63). As described above, the compensation film (10) may be the optical light-passing sheet of the present invention, which may include: a substrate (631); a photo-alignable layer (not shown in FIG. 6) formed on the substrate. And a liquid crystal sound is formed on the photo-orientable layer and has the above-mentioned first-region (four) eight) the liquid crystal layer (4)) may be a phase retardation layer. The display =1; the surface of the compensation film (63) is the image display surface and is oriented outwards. In a specific embodiment, the display
表面平行於垂直表面(錯直表面，圖6中的J 之縱向平彳== = — 鏡放置於觀看者眼球前側時，觀看者可=影= 光源及一光學 背光單元(61)舉例可具有—反射板、 19 201140146 片（圖皆未示）。反射板會將光源所放出的光轉至光學片側， 並具有反射、散射、擴散及類似功用。反射板舉例包括則 乙稀對笨二甲酸s旨（PET)泡沐材料。因此，可有效利用㈣ 所放出的光。光源由背面照射顯示面板（62)，且可舉例包括、 複數個固定間隔平行排列之線光源、或複數個排列成二維 陣列之點狀光源。此外，線光源舉例可為熱陰極登光燈 (HCFL)、冷陰極螢光燈（CCFL)或其類似者。點狀光源舉^ 可為發光二極體（LED)或其類似者。光學片可均勻平面分散 來自光源的光亮度，或將來自光源的光偏離角度及偏振狀 態調整到所欲範圍，其舉例包括擴散板、反射偏光元件及 相差板。再者，光源可為邊緣光型。於此例中，可視需求 使用導光板或導光膜。 顯示面板（62)可為透射液晶顯示面板，其中複數個晝 素於排及列之方向上二維排列，並依照圖像訊號驅動每一 畫素，以顯示影像。如上所述，晝素舉例可包括，如圖3 所示，左眼畫素及右眼晝素。如圖6所示，顯示面板（62) 由背光單元（10)側依序舉例可具有一透明基板（622)、畫素 電極（623) ' —配向膜（624)、一液晶層（625)、一配向膜 (626)、一共用電極（627)、一彩色濾光片（628)及一透明基板 (629)(對向基板）。又，於本發明中，第一偏光板（621A)係 貼附於透明基板（622)上，而第二偏光板（621 B)係貼附於透 明基板（629)上。 第一偏光板（621A)係設置於顯示面板（62)之光入射 側’而第二偏光板（621B)係設置於顯示面板（62)之光放射 20 201140146 側。偏光板（621A)及（621B)為一種光學快門（〇ptical shutter)，其只會傳遞特定振動方向上的光（偏振光）。舉例 說明’偏光板（621A)及（621B)係設置成，其偏振軸互不同且 呈一特定角度（如90度），據此，液晶層會傳遞或阻擋背光 單元（61)所放出的光。 第一偏光板（621A)之吸收軸（圖未示）方向係設定於可 傳遞月光單元（61)發射光之範圍内。舉例說明，當背光單元 (61) 發射光之偏振軸於垂直方向上時，第一偏光板（62ia) 之傳輸軸亦於垂直方向上，當背光單元（61)發射光之偏振軸 於水平方向上時，第一偏光板（621A)之傳輸軸亦於水平方 向上。此外，背光單元（61)所放出的光並不限於線偏振光， 其可為圓形或橢圓形偏振光，或非偏振光。 第二偏光板（621B)之吸收軸方向係設定於顯示面板 (62) 所傳遞光之可傳遞範圍内。舉例說明，當第一偏光板 (621A)之吸收軸於水平方向時，第二偏光板（621B)之吸收軸 則於垂直於水平方向之方向（垂直方向）上。當第一偏光板 (621A)之吸收軸於垂直方向時，第二偏光板（62丨B)之吸收軸 則於垂直於垂直方向之方向（水平方向）上。 透明基板（622)及（629)係對於可見光透明。此外，背 光單元（61)側上之透明基板舉例可具有主動驅動電路形成 其上。該電路包括薄膜電晶體（TFT，做為電性連接至透明 晝素電極之驅動元件）及線路。晝素電極（623)舉例可包括氧 化銦錫（ITO)，其係做為每一畫素的電極。配向膜⑻句舉例 可包括-?炎合物材料，如聚亞胺，俾使液晶進行配向處理。 201140146 液晶層（625)舉例可包括，VA (垂直配向）模式液晶 、TN (扭 轉向列）模式液晶或STN (超扭轉向列）模式液晶。每一晝 素液晶層（625)可傳遞或阻擋背光單元（61)所放出的光，以 響應來自驅動電路（圖未示）之施加電壓。共用電極（627) 舉例可包括ITO，以做為共用對向電極。排列濾光部 (628A) ’其係用於將背光單元（6])所放射的光分離成例如紅 色（R)、綠色（G)及藍色（B)三原色分光，以形成彩色濾光片 (628)。彩色濾光片（628)具有黑色矩陣部（628B)，其對於遽 光部（628A)間區域（對應畫素間界）的光具有阻擋作用。 於一具體實施例中，本發明光學濾光片（63)可將自第 二偏光板（621B)照射的光分成左旋圓偏振光及右旋圓偏振 光’並將其傳遞至使用偏振眼鏡的觀看者。 【優點】 本發明提供光可定向層中定向處理之感壓黏膜及使 用感壓黏膜製備光學濾光片之方法，其可使非定向區域之 形成降至最低，並可形成具有高準確度之定向圖案，此外， 本發明可提供具有優異效能之光學濾光片及立體影像顯示 裝置。 【實施方式】 藉由下述本發明實施例及比較例，可更加詳細解釋本 發明，且本發明之範疇並不侷限於該些實施例。 實施例1 製備定向處理用之感壓黏膜 22 201140146 將遮光墨水印至三醋酸纖維素（丁AC)板（UZ8〇， 所製造），俾於三醋酸纖維素板（為透光板）上形成遮光區。 於此，該遮光區係形成條狀，且透光區與遮光區係如圖2所 示交替排列。透光區與遮光區之間距（ρ)約為丨〇8〇 μηι，而相 鄰遮光區間之距離約為540 μη1，墨水印刷高度則約為 之後，使用丙烯酸感壓黏劑，於丁AC*材一側（相對 於印刷側）形成感壓黏層，以製得定向處理用之感壓黏膜。 圖7係製得之感壓黏膜前側照片。 製備光學遽片 使用感壓黏膜，藉由如圖5所示之方式製備光學濾片。 首先，將聚肉桂酸酯（po】ycinnamate)型光可定向層（2)形成 於厚度為8G_之三醋酸纖維素基材⑴上，而光可定向層⑺ 乾燥後之厚度為1，000 A。光可定向層（2)之形成方法為：藉 由滾筒塗佈法，將形成光可定向層之溶液塗佈於基材〇曰） 上，再於80°C進行乾燥約2分鐘，以移除溶劑。該溶液（聚 降冰片烯：丙烯酸單體：光起始劑（重量比）=2 : 1 : 是The surface is parallel to the vertical surface (the straight surface, the longitudinal plane of J in Fig. 6 == = - when the mirror is placed on the front side of the viewer's eyeball, the viewer can = shadow = light source and an optical backlight unit (61) can have - Reflector, 19 201140146 (not shown). The reflector will transfer the light from the light source to the side of the optical sheet and have reflection, scattering, diffusion and similar functions. Examples of reflectors include ethylene-p-dicarboxylic acid. s (PET) foam material. Therefore, the light emitted by (4) can be effectively utilized. The light source is illuminated by the back side of the display panel (62), and may include, for example, a plurality of line sources arranged in parallel at regular intervals, or a plurality of A two-dimensional array of point light sources. In addition, the line source may be a hot cathode discharge lamp (HCFL), a cold cathode fluorescent lamp (CCFL) or the like. The point source may be a light emitting diode (LED) Or the like. The optical sheet can uniformly disperse the brightness of the light from the light source, or adjust the deviation of the light from the light source to the desired range, such as a diffusing plate, a reflective polarizing element, and a phase difference plate. , The source may be an edge light type. In this example, a light guide plate or a light guide film may be used as needed. The display panel (62) may be a transmissive liquid crystal display panel in which a plurality of pixels are arranged two-dimensionally in the direction of the rows and columns. And driving each pixel according to the image signal to display an image. As described above, the halogen element may include, as shown in FIG. 3, the left eye pixel and the right eye element. As shown in FIG. 6, the display panel ( 62) The backlight unit (10) side may be sequentially exemplified to have a transparent substrate (622), a pixel electrode (623)' - an alignment film (624), a liquid crystal layer (625), an alignment film (626), and a a common electrode (627), a color filter (628), and a transparent substrate (629) (opposing substrate). Further, in the present invention, the first polarizing plate (621A) is attached to the transparent substrate (622). The second polarizing plate (621 B) is attached to the transparent substrate (629). The first polarizing plate (621A) is disposed on the light incident side of the display panel (62) and the second polarizing plate (621B) It is disposed on the side of the light emission 20 201140146 of the display panel (62). The polarizing plates (621A) and (621B) are an optical shutter (〇ptic Al shutter), which only transmits light in a specific vibration direction (polarized light). For example, 'the polarizing plates (621A) and (621B) are arranged such that their polarization axes are different from each other and at a specific angle (such as 90 degrees). According to this, the liquid crystal layer transmits or blocks the light emitted by the backlight unit (61). The absorption axis (not shown) of the first polarizing plate (621A) is set in the range of the light that can be transmitted by the moonlight unit (61). For example, when the polarization axis of the light emitted by the backlight unit (61) is in the vertical direction, the transmission axis of the first polarizing plate (62ia) is also in the vertical direction, when the polarization axis of the light emitted by the backlight unit (61) is In the horizontal direction, the transmission axis of the first polarizing plate (621A) is also in the horizontal direction. Further, the light emitted by the backlight unit (61) is not limited to linearly polarized light, which may be circular or elliptical polarized light, or unpolarized light. The absorption axis direction of the second polarizing plate (621B) is set within the transmittable range of the light transmitted by the display panel (62). For example, when the absorption axis of the first polarizing plate (621A) is in the horizontal direction, the absorption axis of the second polarizing plate (621B) is in the direction perpendicular to the horizontal direction (vertical direction). When the absorption axis of the first polarizing plate (621A) is in the vertical direction, the absorption axis of the second polarizing plate (62丨B) is in the direction perpendicular to the vertical direction (horizontal direction). The transparent substrates (622) and (629) are transparent to visible light. Further, the transparent substrate on the side of the backlight unit (61) may have an active driving circuit formed thereon. The circuit includes a thin film transistor (TFT, which is a driving element electrically connected to a transparent germanium electrode) and a wiring. The halogen electrode (623) may include, for example, indium tin oxide (ITO) as an electrode for each pixel. Examples of the alignment film (8) may include - an inflammatory material such as polyimide, which causes the liquid crystal to be aligned. The 201140146 liquid crystal layer (625) may include, for example, a VA (Vertical Alignment) mode liquid crystal, a TN (Twist Steering Column) mode liquid crystal, or an STN (Super Torsion Nematic) mode liquid crystal. Each of the pixel liquid crystal layers (625) can transmit or block light emitted by the backlight unit (61) in response to an applied voltage from a driving circuit (not shown). The common electrode (627) may include, for example, ITO as a common counter electrode. The arrangement filter (628A) is used to separate the light emitted by the backlight unit (6) into, for example, red (R), green (G), and blue (B) three primary colors to form a color filter. (628). The color filter (628) has a black matrix portion (628B) which blocks the light in the region between the phosphor portions (628A) (corresponding to the pixel boundary). In one embodiment, the optical filter (63) of the present invention can split the light irradiated from the second polarizing plate (621B) into left-handed circularly polarized light and right-handed circularly polarized light' and transmit it to the use of polarized glasses. Viewers. [Advantages] The present invention provides a pressure sensitive film for directional treatment in a photoalignable layer and a method for preparing an optical filter using the pressure sensitive film, which can minimize formation of non-directional regions and can form high accuracy. The orientation pattern, in addition, the present invention can provide an optical filter and a stereoscopic image display device having excellent performance. [Embodiment] The present invention can be explained in more detail by the following examples and comparative examples of the invention, and the scope of the invention is not limited to the embodiments. Example 1 Preparation of Pressure Sensitive Film for Directional Treatment 22 201140146 Printing of light-shielding ink onto a cellulose triacetate (butyl acetate) plate (manufactured by UZ8®) and forming on a cellulose triacetate plate (for a light-transmitting plate) Shading area. Here, the light-shielding region is formed in a strip shape, and the light-transmitting region and the light-shielding region are alternately arranged as shown in FIG. The distance between the light-transmitting area and the light-shielding area (ρ) is about 〇8〇μηι, and the distance between adjacent light-shielding areas is about 540 μη1, and the ink printing height is about after, using acrylic pressure-sensitive adhesive, Ding AC* A pressure sensitive layer is formed on one side of the material (relative to the printing side) to obtain a pressure sensitive film for orientation treatment. Figure 7 is a photograph of the front side of the pressure sensitive mucosa. Preparation of Optical Sepals An optical filter was prepared by means of a pressure sensitive mucosa by the manner shown in FIG. First, a polycinnamate (po) ycinnamate type photoalignable layer (2) is formed on a cellulose acetate substrate (1) having a thickness of 8 G_, and a thickness of the photoalignable layer (7) after drying is 1,000. A. The photo-alignable layer (2) is formed by coating a solution forming a photo-alignable layer on a substrate by a roll coating method, and drying at 80 ° C for about 2 minutes to remove Remove solvent. This solution (polynorbornene: acrylic monomer: photoinitiator (weight ratio) = 2 : 1 : yes
藉由將t降冰片烯（polynorbonene，重量平的八工旦A 刀于重為 150,000’其具有如下式丨所示之肉桂酸醋基）與兩烯酸單體 之混合物與光起始劑（Igaeure 9〇7)混合後再將其溶解於環己 酮溶劑中而製得，其中聚降冰片烯之固含量為2 wt;=旦 百分比）。 H里 [式1] 23 201140146 隨後’藉由線偏振紫外光（300 mw/cm2)照射，使光可定 向層（2)進行初次定向化。控制初次定向化中線偏振紫外光 之偏振方向，使偏振方向與初次定向處理後將貼附之感壓 黏膜（3)透光區（丁)與遮光區（B)邊緣呈大致約45度之夾角。 於進行初次定向後，藉由感壓黏層，將感壓黏膜（3)緊密貼 附於光可定向層（2)上。接著，使用線偏振紫外光（300 mW/cm2)照射光可定向層（2)，以進行第二次定向處理。於 進行第二次定向中，控制線偏振紫外光之偏振方向，使立 與初次定向處理之線偏振紫外光偏振方向約大致呈卯度^ 夾角。於完成定向製程後，剝除感壓黏膜（2)，並形成且有九/4 相延遲特性之相延遲層⑷於其上。具體地說，將液晶化合 物（LC2d製自BASF)塗佈於光可定向層⑺上，且液晶 化合物乾燥後之厚度為1_。液晶化合物會根據光可定向 層（2)之定向圖案進行定向，且其係藉由紫外光⑽ 照射約卿而進行交聯及聚合，以製得包含兩種區域的光 學遽片，其中該兩種區域係依據光可定向層⑺定向圖案而 具有方向相異之慢轴。 比較例1 24 201140146 除了不使用感壓黏膜⑺而改用習知用於光可定向層 定向時之光罩外，其餘製備光學濾光片之步驟皆與實施例〜 所述方法相同。具體地說，第二次定向處理係藉由光罩， 利用線偏振紫外光，對初次定向化處理後之光可定向層進 行照光，其中光罩係設置於光可定向層上，而光罩與光可 定向層間之距離維持於〇 7 mm。 比較例2 除了不使用感壓黏膜（2)而改用習知用於光可定向層 定向時之光罩外，其餘製備光學濾光片之步驟皆實施例^斤 述方法相同。具體地說，第二次定向處理係藉由光罩利 用線偏振紫外光，對初次定向化處理後之光可定向層進行 照光，其中光罩係設置於光可定向層上，而光罩與光可定 向層間之距離維持於M mm。 1.定向圖案之評估 對實施例1與比較例丨及2之定向圖案進行評估。圖8係 實施例1定向後之光可定向層放大圖，而圖9係實施例丨定向 後之光可定向層上相延遲層放大圖。圖1〇係比較例丨定向後 之光可定向層放大圖，而圖u係比較例丨定向後之光可定向 層上相延遲層放大圖。圖12係比較例2定向後之光可定向層 放大圖。圖中清楚顯示，實施例i中可清楚觀察到定向圖案 的邊緣，並形成具有高準確度之相延遲層。然而，比較例1 及2中定向圖案之邊緣不明顯。 25 201140146 2·非疋向區域與串擾比（crossta丨kratio)之評估 對於實施例丨及比較例1與2定向後之光可定向層，進行 光可疋向層中非定向區域相對於光可定向層整體面積之面 積評估。此外’亦對每一定向後之光可定向層進行串擾比 之評估。 承上，將光學濾光片置於光吸收軸互相垂直之兩偏光 片間’使光學濾光片之定向方向沿著偏光片之光吸收軸， 再以光源照射偏光片’並利用偏光顯微鏡觀察發生漏光之 區域，進而評估非定向區域之面積比例。 此外’將光學濾光片應用於習知偏振眼鏡式立體影像 顯示裝置中，而後改變右眼單位畫素及左眼單位晝素之亮 度’進而評估距離立體影像顯示裝置之影像顯示表面中心 1.8m處之亮度。將評估後之亮度利用通式1至3算得串擾比。 5平估結果如下表1所示。 [表1] 非定向區域之面積比（％) 串擾比（°/〇) 實施例1 約0.9 0.5 比較例1 約37 10 比較例2 約93以上 20 表1清楚顯示，實施例1光可定向層之非定向區域面 積比及串擾比可降至最低。 圖13係使用偏振眼鏡觀看到的立體影像顯示裝置之 相片’其中該裝置係使用實施例1所製之光學濾光片。圖 26 201140146 13 (a)係右眼藉由偏振眼鏡所觀看到的相片，而圖"(b)係 左眼藉由偏振眼鏡所觀看到的相片。 ’、 ，如圖13所示，若用偏振眼鏡之一侧觀看具有不同偏 光性質來自本發明料濾光4之左眼及右㈣像當其 2振方向與偏振眼鏡之相延遲膜定向方向互相垂直時，則 :像會顯不成黑色；而當偏振方向與偏振眼鏡之相延遲膜 定向方向互相平行時’則影像會顯示成白色。此外，當用 偏振眼鏡之另-側觀看時，助同膜之黑色與白色影像 清楚交換。 【圖式簡單說明】 圖1係包括於感壓黏膜之基板示例性態樣剖視圖。 圖2係由基板上側看到的基板示例性態樣圖。 圖3係顯示影像元件中形成左眼影像之單元畫素(U L)與形 成右眼影像之單元畫素（UR)形狀示例性態樣圖。… 圖4係感壓黏臈示例性態樣剖視圖。 圖5係本發明光學濾光片製備方法之示例性態樣圖。 圖6係顯示裝置之示例性態樣剖視圖。 圖7係實施例製備感壓黏膜之前側照片。 圖8係實施例1定向後之光可定向層放大照片。 圖9係實施⑷定向後之光可定向層上相延遲膜放大照片。 圖10係比較例1定向後之光可定向層放大照片。 圖1H系比較⑷定向後之光可定向層上相延遲膜放大照片。 圖12係比較例2定向後之光可定向層放大照片。 2 7 201140146 圖13係使用偏振眼鏡觀看到的立體影像顯示裝置之4目# 其中該裝置係使用實施例丨所製之光學濾光片。 【主要元件符號說明】 1,631 基材 2 光可定向層 21,22,41,42 區域 3 感壓黏膜 4, 625,632 液晶層 10 基板 20 感壓黏層 60 顯示裝置 61 背光單元 62 顯示面板 621A 第一偏光板 621 B 第·一偏光板 622,629 透明基板 623 畫素電極 624,626 配向膜 627 共用電極 628 彩色濾光片 628A 濾光部 628B 黑色矩陣部 63 光學濾光片 632A 第一區域 632B 第二區域 B 遮光部 T 透光部 P 間距 V 間隔 UR,UL 單元畫素 W1,W2 寬度 28By using t-norbornene (polynorbonene, a flat-weight octagonal A-knife at a weight of 150,000 'with a cinnamic acid vinegar group of the formula 如下) and a mixture of an alkenoic acid monomer and a photoinitiator ( Igaeure 9〇7) is prepared by mixing and dissolving it in a cyclohexanone solvent, wherein the solid content of polynorbornene is 2 wt; H [Formula 1] 23 201140146 Subsequently, the light directing layer (2) was subjected to initial orientation by irradiation with linearly polarized ultraviolet light (300 mw/cm 2 ). Controlling the polarization direction of the linearized ultraviolet light in the initial orientation, so that the polarization direction is approximately 45 degrees from the edge of the light-sensitive adhesive layer (3) and the light-shielding region (B) which are attached after the initial orientation treatment. Angle. After the initial orientation, the pressure sensitive mucosa (3) is closely attached to the photo-alignable layer (2) by pressure-sensitive adhesive layer. Next, the light-orientable layer (2) was irradiated with linearly polarized ultraviolet light (300 mW/cm2) for the second orientation treatment. In the second orientation, the polarization direction of the linearly polarized ultraviolet light is controlled so that the polarization direction of the linearly polarized ultraviolet light of the initial orientation treatment is approximately at an angle of about ^. After the alignment process is completed, the pressure sensitive film (2) is stripped and a phase retardation layer (4) having a 9/4 phase retardation characteristic is formed thereon. Specifically, a liquid crystal compound (manufactured by BASF from LC2d) was applied onto the photo-orientable layer (7), and the thickness of the liquid crystal compound after drying was 1 mm. The liquid crystal compound is oriented according to the orientation pattern of the photo-orientable layer (2), and is cross-linked and polymerized by irradiation of ultraviolet light (10) to obtain an optical wafer comprising two regions, wherein the two The regions have slow axes of different directions depending on the orientation pattern of the photo-orientable layer (7). Comparative Example 1 24 201140146 The steps for preparing the optical filter were the same as those of the examples to the above except that the photosensitive film (7) was not used and the conventional photomask was used for orientation of the photoalignable layer. Specifically, the second directional processing is to illuminate the light alignable layer after the initial directional treatment by using a ray mask, wherein the reticle is disposed on the light alignable layer, and the reticle is used. The distance from the photo-orientable layer is maintained at 〇7 mm. Comparative Example 2 The steps of preparing the optical filter were the same except that the photosensitive film (2) was not used and the conventional photomask was used for the orientation of the photo-orientable layer. Specifically, the second orientation treatment illuminates the light orientable layer after the initial orientation treatment by using a linearly polarized ultraviolet light through a photomask, wherein the photomask is disposed on the light orientable layer, and the mask is The distance between the light orientable layers is maintained at M mm. 1. Evaluation of orientation pattern The orientation patterns of Example 1 and Comparative Examples 丨 and 2 were evaluated. Figure 8 is an enlarged view of the light-orientable layer after orientation of Example 1, and Figure 9 is an enlarged view of the phase retardation layer on the light-orientable layer after the orientation of the embodiment. Fig. 1 is a magnified view of the photo-orientable layer after the orientation of the comparative example, and Figure u is an enlarged view of the phase retardation layer on the photo-orientable layer after the orientation of the comparative example. Figure 12 is an enlarged view of the light-orientable layer after orientation of Comparative Example 2. It is clearly shown in the figure that the edge of the orientation pattern is clearly observed in the embodiment i, and a phase retardation layer having high accuracy is formed. However, the edges of the orientation patterns in Comparative Examples 1 and 2 were not conspicuous. 25 201140146 2·Evaluation of non-directed area and crosstalk ratio (crossta丨kratio) For the light alignable layer after the orientation of the embodiment 丨 and the comparative examples 1 and 2, the non-directional area in the photo-alignable layer is relative to the light Area assessment of the overall area of the alignment layer. In addition, the crosstalk ratio is evaluated for each of the aligned light orientable layers. The optical filter is placed between two polarizers whose light absorption axes are perpendicular to each other 'the direction of the optical filter is along the light absorption axis of the polarizer, and then the polarizer is irradiated with the light source' and observed by a polarizing microscope. The area where light leakage occurs, and then the area ratio of the non-directional area is evaluated. In addition, the optical filter is applied to a conventional polarized glasses stereoscopic image display device, and then the brightness of the right eye unit pixel and the left eye unit pixel is changed, and then the center of the image display surface of the stereoscopic image display device is evaluated by 1.8 m. The brightness of the place. The crosstalk ratio was calculated from the evaluated brightness using the general formulas 1 to 3. 5 The results of the flat evaluation are shown in Table 1 below. [Table 1] Area ratio of non-directional area (%) Crosstalk ratio (°/〇) Example 1 About 0.9 0.5 Comparative Example 1 About 37 10 Comparative Example 2 About 93 or more 20 Table 1 clearly shows that Example 1 light can be oriented The non-directional area ratio and crosstalk ratio of the layer can be minimized. Fig. 13 is a photograph of a stereoscopic image display device viewed using polarized glasses, wherein the device uses the optical filter manufactured in Example 1. Figure 26 201140146 13 (a) is the photo of the right eye viewed by polarized glasses, and the picture " (b) is the photo of the left eye viewed by polarized glasses. ', as shown in FIG. 13, if one side of the polarized glasses is used to view the left eye and the right (four) image from the filter 4 of the present invention having different polarization properties, when the direction of the film and the direction of the retardation film of the polarized glasses are mutually When it is vertical, the image will not appear black; and when the polarization direction is opposite to the direction of the retardation film of the polarized glasses, the image will be displayed in white. In addition, when viewed from the other side of the polarized glasses, the black and white images of the assist film are clearly exchanged. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing an exemplary aspect of a substrate included in a pressure sensitive film. 2 is an exemplary view of a substrate as seen from the upper side of the substrate. Fig. 3 is a view showing an exemplary aspect of a unit pixel (U L) forming a left eye image and a unit pixel (UR) shape forming a right eye image in the image element. Fig. 4 is a cross-sectional view showing an exemplary aspect of pressure sensitive adhesive. Fig. 5 is a view showing an exemplary aspect of a method of producing an optical filter of the present invention. Fig. 6 is a cross-sectional view showing an exemplary aspect of the display device. Figure 7 is a photograph of the front side of the preparation of the pressure sensitive mucosa. Figure 8 is an enlarged photograph of the photo-alignable layer after orientation of Example 1. Figure 9 is an enlarged photograph of the phase retardation film on the photo-orientable layer after (4) orientation. Figure 10 is an enlarged photograph of the photo-alignable layer after orientation of Comparative Example 1. Figure 1H is a comparison of the (4) phased retardation film on the photo-orientable layer after orientation. Figure 12 is an enlarged photograph of the photo-alignable layer after orientation of Comparative Example 2. 2 7 201140146 Fig. 13 is a view of a stereoscopic image display device viewed using polarized glasses. The optical filter of the embodiment is used. [Main component symbol description] 1,631 Substrate 2 Light alignable layer 21, 22, 41, 42 Area 3 Pressure sensitive film 4, 625, 632 Liquid crystal layer 10 Substrate 20 Pressure sensitive layer 60 Display device 61 Backlight unit 62 Display panel 621A First Polarizing plate 621 B First polarizing plate 622, 629 Transparent substrate 623 Pixel electrode 624, 626 Alignment film 627 Common electrode 628 Color filter 628A Filter portion 628B Black matrix portion 63 Optical filter 632A First region 632B Second region B Shading Part T Transmissive P P Spacing V Interval UR, UL Cell W1, W2 Width 28