1344020 九、發明說明： 【發明所屬之技術領域】 本發明有關一種偏光子及偏光片之製法’特別是有關一種 ' 用在液晶顯示器之偏光片中之偏光子的製作方法。 【先前技術】 在液晶顯示器中，偏光片乃是不可或缺的構成元件之一， • 其用途是將原本不具偏極性的光線，產生偏極化，轉變成偏極 光，因此，液晶顯示器就能利用此偏極光，加上液晶分子本身 的扭轉特性，來達到控制光線的通過與否以及色彩訊號的呈 現。而近年來，隨著液晶顯示元件被廣泛地應用於諸如文字處 理器(word processor)、電腦螢幕、手機或液晶電視等各種電子 设備中、甚至大型戶外顯示看板、車輛、航空器、航海儀器以 及衛星等方面，因此，偏光片的需求量也越來越大。 鲁 習知的偏光片1〇的剖面結構如第1圖所示，其主要包含聚 乙烯醇(polyvinyl alcohol，以下簡稱為PVA)偏光基體層（即偏光 子）12、及包覆於其上下二側之三醋酸纖維素(triacetyl cellulose，以下簡稱為TAC)保護層14與16。更有再貼附一感 壓膠層18、一離形膜20、以及又一保護膜22。有時候，為了 防止反射現象，保護層16表面還會再予特殊處理，例如加上一 v 層抗眩(anti-glare)層或者抗反射層（anti_reflecti〇n)。目前，市場 、 上的偏光片仍以鐵系偏光片為主流，這是因為蛾系偏光片且有 5 1344020 、 尚光穿透性、尚對比，且具有較廣域波長的偏光特性，而其製 造上較為容易’相對也使其價格較為便宜。 . 傳統的技藝製造碘系偏光片的方法乃是先將聚乙烯醇 (PVA)薄膜於水中膨潤(sweUing)'染色槽中(含有碘⑹及蛾化钟 (KI))染色(dyeing)、延伸槽中(含有硼酸阳汨〇3)及碘化鉀)延 伸、視情況而定(optional)使用含硼酸及碘化鉀溶液進行固色及 φ 水洗處理、經過供箱烘乾，而形成上述具有偏光特性的PVA偏 光基體層12，做為偏光子。接著再使用水凝膠(hydr〇gd)將pvA 偏光基體層12的上、下兩面與保護層14及16貼合，經過乾燥 後，形成三層結構的偏光板半成品。其中，硼酸扮演交聯劑 (cmsslinking agent)的角色，除了在PVA膜表面進行交聯反應而 增加膜的韌性之外，亦可防止在染色槽中染入pvA膜中的碘及 破化奸在後續的浸潤過程中滲出，造成偏光子掉色的現象而使 ^ 偏光子的光學性質(如偏光度、穿透率、b值等等)被破壞。 硼酸雖具有交聯劑功能，但因其存在亦造成若干缺點。一 是，由於硼酸的作用使得PVA膜韌性增加，故在延伸過程中硼 酸會限制PVA麟延伸倍率，目此—般延伸倍率會介於約5.5 至約6.0倍之間。二是，由於pVA膜的韌性因硼酸在其表面的 交聯而提局’因此會造成延伸過程中滾輪承受的張力過大。為 ‘ 解決此問題’―般必須藉由高溫延伸而使PVA膜軟化而降低張 力。常用的延伸溫度(延伸槽溫)一般介於50至55°C之間。但是 使用呵的延伸槽溫除了會加速槽液的蒸發，使藥液濃度變化加 6 1344020 的蛾更容易滲出而形成掉色 大之外，亦會造成PVA祺中染入 【發明内容】 本發=之—目的在提供—種改良之製造偏光子及偏光片之 =二Γ具有良好光學性質之偏光子或偏光片，並且延伸 槽可”有較低的溫度’可改善上述糾技術之缺點。 依據本發明之製造偏光子之方法包括提供一聚乙稀醇 (PVA)膜；將PVA膜浸泡在第—溶液中，以進行預處理，盆中 第-溶液包括至少-種具有至少二個縣之賴或其衍生物， 以及至少-化舰與PVA職面反應之條船將經過預 處理之PVA麟泡錢色雜中，撕浸祕理；將經過浸染 處理之PVA膜浸泡在第二溶液巾，同時延伸ρνΑ膜其中第1344020 IX. Description of the Invention: [Technical Field] The present invention relates to a method for producing a polarizer and a polarizer, and more particularly to a method for fabricating a polarizer used in a polarizer of a liquid crystal display. [Prior Art] In a liquid crystal display, a polarizer is one of the indispensable components, and its use is to convert a non-polar light into a polarized light, so that the liquid crystal display can By using this polarized light, and the torsional characteristics of the liquid crystal molecules themselves, it is possible to control the passage of light and the presentation of color signals. In recent years, liquid crystal display elements have been widely used in various electronic devices such as a word processor, a computer screen, a mobile phone, or a liquid crystal television, and even large outdoor display panels, vehicles, aircraft, navigation instruments, and satellites. In other respects, therefore, the demand for polarizers is also growing. As shown in Fig. 1, the cross-sectional structure of Lu Xing's polarizer is mainly composed of a polyvinyl alcohol (hereinafter referred to as PVA) polarizing substrate layer (i.e., a polarizer) 12 and coated thereon. The side triacetyl cellulose (hereinafter referred to as TAC) protective layers 14 and 16. Further, a pressure-sensitive adhesive layer 18, a release film 20, and a further protective film 22 are attached. Occasionally, in order to prevent reflection, the surface of the protective layer 16 is further treated, for example, by adding a v-layer anti-glare layer or an anti-reflection layer (anti_reflecti〇n). At present, polarizers in the market and on the market are still dominated by iron-based polarizers. This is because the moth-based polarizers have 5 1344020, are still light-transmissive, still contrasting, and have a wide-area wavelength polarization property. It's easier to manufacture 'relatively, making it cheaper. The traditional technique for making iodine-based polarizers is to dye (deeping) and extend the polyvinyl alcohol (PVA) film in a sweUing dyeing tank (containing iodine (6) and moth clock (KI)). The tank (containing boric acid impervious 3) and potassium iodide) is extended, optionally, using boric acid and potassium iodide solution for fixing and φ water washing, and dried by a box to form the above-mentioned PVA having polarizing characteristics. The polarizing substrate layer 12 is used as a polarizer. Next, the upper and lower surfaces of the pvA polarizing substrate layer 12 are bonded to the protective layers 14 and 16 by using a hydrogel (hydrum gd), and after drying, a semi-finished product of a three-layer structure is formed. Among them, boric acid plays the role of a cross-linking agent (cmsslinking agent), in addition to cross-linking reaction on the surface of the PVA film to increase the toughness of the film, it can also prevent iodine and breakage in the pvA film in the dyeing tank. The subsequent infiltration process oozes out, causing the phenomenon that the polarizer fades, and the optical properties (such as the degree of polarization, the transmittance, the b value, etc.) of the photon are destroyed. Although boric acid has a function as a crosslinking agent, it also causes several disadvantages due to its presence. First, due to the effect of boric acid, the toughness of the PVA film is increased, so that boric acid will limit the stretching ratio of PVA during the extension process, and the stretching ratio will be between about 5.5 and about 6.0 times. Second, since the toughness of the pVA film is improved by the cross-linking of boric acid on its surface, the tension experienced by the roller during the elongation process is excessive. In order to solve this problem, the PVA film must be softened by high temperature elongation to reduce the tension. Commonly used extension temperatures (extended bath temperatures) are typically between 50 and 55 °C. However, the use of the extended bath temperature will accelerate the evaporation of the bath, so that the concentration of the chemical solution plus the 6 1344020 moth is more likely to ooze out and form a large color, which will also cause the PVA to be dyed. [Invention] The purpose of the invention is to provide an improved phototransistor and a polarizer for a polarizer or a polarizer having good optical properties, and the extension groove can have a lower temperature to improve the disadvantages of the above-mentioned correction technique. The method for producing a polarizer of the present invention comprises: providing a polyethylene glycol (PVA) film; immersing the PVA film in the first solution for pretreatment, wherein the first solution in the basin comprises at least one species having at least two counties Lai or its derivatives, and at least the ship that reacts with the PVA and the PVA will pass the pre-treated PVA lining, and the tip of the PVA film will be immersed in the second solution. While extending the ρνΑ film which is the first
一浴液包括硼酸，以及將經過延伸處理的pvA臈進行乾燥，形 成一偏光子。 依據本發明之製造偏光片之方法包括：提供一聚乙稀醇 (PVA)膜，將PVA膜浸泡在第一溶液中，以進行預處理其中 第一溶液包括至少一種具有至少二個羧基之羧酸或其衍生物， 以及至少一種催化叛酸與PVA膜表面反應之催化劑；將經過預 、 處理之PVA膜浸泡在染色溶液中，進行浸染處理；將經過浸染 7 1344020 處理之PVA臈浸泡在第二溶液中，同時延伸pVA膜，其中第 二溶液包括硼酸；將經過延伸處理之pVA膜進行乾燥，形成一 偏光子；以及將經乾燥之偏光子與至少一保護層貼合，形成一 偏光片。 本文中所稱之「偏光子」’或稱「偏光膜」，係指偏光片之 諸層中具有偏光功能之膜層，例如碘系偏光薄膜或二色性高分 子偏光薄膜。 於本發明中，進行偏光子或偏光片之製造時，係先使用具 有至少二個羧基之羧酸或其衍生物對pvA進行交聯，然後才將 已交聯的PVA膜進行染色。由於在染色前對pVA進行交聯， 使得依據本發明之製造偏光子及偏光片的方法可具有下列優點 及功效：依據本發明之製程與傳統製程之間切換容易所製得 之偏光子不易掉色’可有效降低延伸槽溫，躲製程參數的調 整具有更大的彈性。 【實施方式】 依據本發明之製造偏光子之方法，包括提供一聚乙稀醇 (PVA)膜，將PVA膜浸泡在第一溶液中，以進行預處理其中 第-溶液包括至少-種具有至少二倾基之紐或其衍生物以 及至少一種催化羧酸與PVA膜表面反應之催化劑；將經過預處 理之PVAH糕染色溶液巾，進行浸染處理；將經過浸染處 理之PVA膜浸泡在第二溶液中，同時延伸pVA膜其中第二 8 1344020 溶液包括硼酸；以及將經過延伸處理的PVA犋進行乾燥，形成 一偏光子。請參閱第2圖’以一具體實施例詳細說明本發明。 如第2圖所示，顯示一使用依據本發明之製造偏光子之方 法並進一步製造偏光片之具體實施例’流程大致分為幾個主要 步驟，包括： 步驟 102 :預處理(pre-treatment)。 步驟 104 :浸染(dyeing)。 步驟 106 :延伸(stretching)。 步驟 108 :乾燥(drying)。 步驟 110 :貼合(lamination)。 步驟 112 :乾燥(drying)。 步驟102、104、106、及1〇8是本發明之製造偏光子之方 法之主要步驟m延伸後，柯視f要進行水洗—或數次。 製造偏光片時’係進-步在所製得之偏光子上進行步驟】⑴之 貼合。在步驟U0之後可依需要進行步驟U2之乾燥程序。One bath includes boric acid, and the extended treated pvA crucible is dried to form a polarizer. A method of manufacturing a polarizer according to the present invention comprises: providing a polyethylene glycol (PVA) film, immersing the PVA film in a first solution for pretreatment, wherein the first solution comprises at least one carboxy group having at least two carboxyl groups An acid or a derivative thereof, and at least one catalyst for catalyzing the reaction of the tickacid with the surface of the PVA film; immersing the pretreated PVA film in the dyeing solution for the dip dyeing treatment; soaking the PVA crucible treated with the dip 7 1344020 In the second solution, the pVA film is simultaneously extended, wherein the second solution comprises boric acid; the extended treated pVA film is dried to form a polarizer; and the dried polarizer is bonded to at least one protective layer to form a polarizer. . The term "polarizer" or "polarizing film" as used herein refers to a film having a polarizing function in layers of a polarizing film, such as an iodine-based polarizing film or a dichroic polarizing film. In the present invention, when a polarizer or a polarizer is produced, pvA is first crosslinked using a carboxylic acid having at least two carboxyl groups or a derivative thereof, and then the crosslinked PVA film is dyed. Since the pVA is crosslinked prior to dyeing, the method for producing a polarizer and a polarizer according to the present invention can have the following advantages and effects: the polarizer which is easily formed by switching between the process according to the present invention and the conventional process is not easily faded. 'It can effectively reduce the temperature of the extension tank, and the adjustment of the avoidance process parameters has greater flexibility. [Embodiment] A method for producing a polarizer according to the present invention includes providing a polyethylene glycol (PVA) film, immersing the PVA film in a first solution for pretreatment, wherein the first solution includes at least one species having at least a dipyl group or a derivative thereof and at least one catalyst for catalyzing the reaction of the carboxylic acid with the surface of the PVA film; the pretreated PVAH cake dyeing solution towel is subjected to dip dyeing treatment; and the impregnated PVA film is immersed in the second solution And simultaneously extending the pVA film, wherein the second 8 1344020 solution comprises boric acid; and drying the extended PVA crucible to form a polarizer. Referring to Figure 2, the present invention will be described in detail by way of a specific embodiment. As shown in Fig. 2, a specific embodiment of a method for producing a polarizer according to the present invention and further manufacturing a polarizer is schematically divided into several main steps, including: Step 102: Pre-treatment . Step 104: Dyeing. Step 106: Stretching. Step 108: Drying. Step 110: Lamination. Step 112: Drying. Steps 102, 104, 106, and 1 are 8 after the main step m of the method for producing a polarizer of the present invention is extended, and the substrate is subjected to water washing - or several times. When the polarizer is manufactured, the step is carried out in step (1) on the prepared polarizer. The drying procedure of step U2 can be carried out as needed after step U0.
1UZ 〜μ个以nun_stretched) PVA膜5〇浸泡在第一 溶液52巾’錢行爾理。第—純52包括至少—種具有至 少二麵基之_或其射物以及至少—種侃紐愈嫩 放置第嘯52料賴理的槽體， 進仃處理，藉此改善m膜的延展性。 9 1344020 所使用的具有至少二個羧基之羧酸或其衍生物可為具有兩 個羧基(-COOH)的有機酸或其衍生物，例如乙二酸、丙二酸、 丁二酸、戊二酸、己二酸、庚二酸，以及前述化合物之衍生物。 亦即只要具有至少二個羧基之羧酸或其衍生物，均可供本發明 使用。亦可使用其鹽類，但須進一步添加酸，使第一溶液成為 酸性。 其中，以己二酸為例，為二元叛酸，共具有6個碳原子(分 子式為H00C(CH2)4C00H) ’故在空間上有不同的構形 (configuration)。考量分子特性、取得來源、及對水的溶解度等 因素，己二酸是適用於本發明之一者。 具有至少一個幾基之緩酸或其衍生物於第一溶液中之量， 並無特別限制，只要可與PVA膜表面反應形成鍵結，並在所設 定的第一溶液之溫度下可以完全溶解即可。以第一溶液之總重 量計，二7L羧酸之量可為例如約丨至4重量％，較佳為2至3 重量％。預處_的槽溫可依需要而罐，沒有嚴格的限制， 於本發明之一具體實施例中，可為25與4〇。〇之間，較佳為3〇 與40°C之間。 所使用之催化劑可為一路易斯酸(Lewis acid)，例如紹離子 (Al3+)、鋅離子(Zn2+)。凡可提供八丨3+或Zn2+的鹽類或錯合物皆 可使用’例如硫酸銘、氣化叙、氣化鋅、硫酸鋅等等。由於預 處理槽的大小、舰的濃度、滾輪的配置、預處_槽溫等皆 1344020 屬可變化的參數’故催化劑的濃度並無限制，只要催化劑的濃 度足夠使羧酸與PVA反應即可。若羧酸與PVA產生反應，則 可明顯觀察到PVA膜的延展性提升，故原本傳統製程所無法達 成的延伸倍率，可藉本製程而輕易達成。若以18水合硫酸鋁作 為A1的來源’以第一溶液之總重量計，約〇〇1至$重量0/〇， 更佳為0.01至3重量％，及最佳為〇.〇1至1重量％。 請同時參閱第3圖，其顯示經過步驟102預處理後的pVA 膜53的表面結構示意圖。以添加己二酸為例，在分子鏈兩端皆 有叛酸基的己二酸分子的其中之一羧酸基會與PVA膜表面的 親水性風氧基62發生醋化反應(esterification)，產生化學鍵結結 構64。或是己二酸分子的二個羧酸基分別與PVA膜表面的氫 氧基62發生醋化反應(esterifjcati〇n)，產生化學鍵結結構&。 此預處理步驟是在PVA膜染色前進行，因此在預處理槽中 的第一溶液中不需含有昂貴的碘化鉀成份。而在進行預處理之 則’亦可先將未延伸(un_stretched) PVA膜浸泡在純水中以膨濁。 經過步驟102預處理後的PVA膜53進行步驟104之浸染， 在染料溶液例如含碘溶液配方54中浸泡，使PVA獏53吸附 蛾。含碘溶液配方54包括分子碘以及碘化鉀，其中碘（包括峨 为子及峨離子）的重量百分比濃度約為0.01重量°/〇至1重量％左 右。染料溶液中亦可進一步含有硼酸。1UZ ~ μ with nun_stretched) PVA film 5 〇 soaked in the first solution 52 towels 'money line. The first-pure 52 includes at least one type of tank having at least two bases or its emitters and at least one type of 侃 侃 放置 放置 放置 第 , , , , , , , , , , , , , , , , , , , , , , , , , , , . 9 1344020 The carboxylic acid having at least two carboxyl groups or a derivative thereof may be an organic acid having two carboxyl groups (-COOH) or a derivative thereof, such as oxalic acid, malonic acid, succinic acid, glutaric acid Acid, adipic acid, pimelic acid, and derivatives of the foregoing compounds. That is, a carboxylic acid having at least two carboxyl groups or a derivative thereof can be used in the present invention. Salts may also be used, but further acid is added to make the first solution acidic. Among them, adipic acid is exemplified by a binary tetacid having a total of six carbon atoms (the molecular formula is H00C(CH2)4C00H), so that there are different configurations in space. Adipic acid is suitable for use in one of the present invention in consideration of factors such as molecular characteristics, source of availability, and solubility in water. The amount of the at least one base acid or its derivative in the first solution is not particularly limited as long as it can react with the surface of the PVA film to form a bond, and can be completely dissolved at the set temperature of the first solution. Just fine. The amount of the two 7 L carboxylic acid may be, for example, about Torr to 4% by weight, preferably 2 to 3% by weight based on the total weight of the first solution. The bath temperature of the pre-station can be as desired, without being strictly limited. In one embodiment of the invention, it can be 25 and 4 Torr. Between 〇, preferably between 3 〇 and 40 ° C. The catalyst used may be a Lewis acid such as a sulphur ion (Al3+) or a zinc ion (Zn2+). Salts or complexes which can provide octagonal 3+ or Zn2+ can be used, for example, sulphuric acid, gasification, zinc hydride, zinc sulphate, and the like. Since the size of the pretreatment tank, the concentration of the ship, the arrangement of the rollers, the pre-station temperature, and the like, all of the 1344020 are variable parameters, the concentration of the catalyst is not limited as long as the concentration of the catalyst is sufficient to react the carboxylic acid with the PVA. . If the carboxylic acid reacts with PVA, the ductility of the PVA film is clearly observed, so the stretching ratio which could not be achieved by the conventional process can be easily achieved by the process. If aluminum sulfate 18 hydrate is used as the source of A1, the total weight of the first solution is about 至1 to $0/〇, more preferably 0.01 to 3% by weight, and most preferably 〇.〇1 to 1 weight%. Please also refer to FIG. 3, which shows a schematic diagram of the surface structure of the pVA film 53 which has been subjected to the pretreatment in step 102. Taking the addition of adipic acid as an example, one of the carboxylic acid groups of the adipic acid molecule having a tickic acid group at both ends of the molecular chain will be esterified with the hydrophilic windoxy group 62 on the surface of the PVA film. A chemical bonding structure 64 is created. Or the two carboxylic acid groups of the adipic acid molecule are respectively acetatized with the hydroxyl group 62 on the surface of the PVA film to produce a chemical bonding structure & This pretreatment step is carried out before the PVA film is dyed, so that it is not necessary to contain an expensive potassium iodide component in the first solution in the pretreatment tank. In the case of pretreatment, the unstretched PVA film may be first immersed in pure water to be inflated. The PVA film 53 pretreated in step 102 is subjected to the dip dyeing in step 104, and soaked in a dye solution such as the iodine-containing solution formulation 54, so that the PVA 貘 53 adsorbs the moth. The iodine containing solution formulation 54 comprises molecular iodine and potassium iodide wherein the concentration of iodine (including hydrazine and strontium ions) is from about 0.01 weight percent to about 1 weight percent. The dye solution may further contain boric acid.
丄J呼呼UZrU .. *於本發明中，並不限於製造蛾系偏光片，因此，在步驟104 /又木長序’用於染色的染料可為二色性染料，其除了峡之外， 尚可為有機染料分子及其類似者。 接著，可選擇性的如通常之傳統技術，在浸染之後及延伸 程序之前’將PVA膜置於第一水洗槽中進行水洗，其中第一水 洗槽中含有蝴酸及缺化卸之水溶液。 接著’將經過浸染的PVA臈55進行步驟1〇6，也就是pVA 膜的延伸(stretching)製程。使PVA膜55在含有硼酸以及碘化 鉀的延伸槽溶液56中進行臈的延伸，例如單向延Wuniaxially stretching) »其中，硼酸的重量百分比濃度可為習知之技術所使 用的潰度’例如約為〗重量％至1G重量％左右。峨化㈣濃度 可為習知之技術所使用的濃度，例如約丨至1〇重量％。所使用 的延伸槽溶液中所含之硼酸及蛾化鉀，在製程中常需要定期監 • 測其含量。於本發明中，其定量容易，不會有問題。 延仲俊的PVA膜可視需要進一步進行水洗，例如可利用 知技術中常使用的第二水洗㈣行水洗。然後，料視需要 -少於固色槽中進行固色。第二水洗槽及固色槽内的溶液可 有硼酸及碘化鉀，濃度可視需求而調整，較佳各獨立為1至 重量％，比例通常與延伸槽内的硼酸與碘化卸的人曰”’ 相同，可進一步改善PVA膜的性質。如仍有需要3 ,比二大’‘ 次進行水洗，可利用習知技術中常使用的第二 ， 一水洗槽進行水 12 1344020 洗’使用冰水(例如約urc或更低溫)將PVA膜在乾燥前先去除 殘留在PVA膜表面的化學成分。 然後，進行步驟108，將經過延伸的pVA膜57進行乾燥， 如此’獲得PVA膜58，即為依縣發明之方㈣狀偏光子。 乾燥方式並無制限定，可藉例如熱風烘乾或汉(紅外線)供乾 等方式乾燥。 繼續進行步驟110，使經過步驟108處理過的pVA膜58 與至少-賴層59進行貼合製程，形成三層貼合結構，以製造 偏光片。靖層可包括例如TAC、：醋酸纖維素(仙吨丨 cellule，簡稱DAC)、料苯二甲酸乙二醇醋(⑽㈣細e t⑽phthalate，簡稱 PET)、環稀烴聚合物(cyd〇〇iefinp〇iy鑛， 簡稱COP)、環稀煙共聚合物(cycl〇〇lefin c〇pdymer，簡稱 c〇c)、聚碳酸醋(polycarb〇nate，簡稱pc)薄膜及其類似者。 最後，進行步驟U2，將貼合的三層貼合結構6〇施以乾燥 處理，例如於約50至贼下進行乾燥，製得偏光片。乾燥方 式並無特職^，可制如熱職乾或IR減f方式乾燥。 此外，為了增加偏光片的功能性，可在保護層上進—步塗 佈例如液晶層、保護層、抗眩層、抗反射層或者是耐刮傷防污 處理層料。藉由不_功能性保制之組合，可得到具有不 同光學效果的偏光板。 1344020 以下，特舉數個實施例，詳細說明依據本發明之製造偏光 子之方法’並與比較例比較之。本發明之方法可與傳統製程輕 易切換’因此，在實施例中係直接採用習知技術之槽體配置。 但是，如第4圖中之槽體及滾輪(或稱輥)之配置僅為最簡示意 圖，其配置可隨實際需求而變動。 實例 實施例1 請參照第4圖所示之習知技術之槽體配置示意圖，將寬度 為650 mm及厚度為75/zm之未延伸PVA臈50利用滾輪輸 送，先於槽68中之28。(：純水中膨潤’然後於做為預處理槽的 槽70中之約30。(：水溶液中進行預處理。槽7〇之水溶液中含有 ^25重量％之己二酸及〇.3重量％之硫酸鋁水合物類 (Al2(S〇4)3 · 16〜18H2〇)。經此預處理後，於槽72之3〇χ：之碘 溶液(含碘濃度為0.033重量。/。，硼酸濃度為〇 95重量％，及碘 化鉀濃度為G.6至G·8重i%)巾缝。將經過浸染之pvA膜於 槽溫51 C之延伸槽74中進行延伸，延伸液含有3 35重量％之 爛酸及3.01重量％之蛾化鉀。接著，於第二水洗槽％中進行 水洗，水洗液溫度為40¾，含有3 27重量％之硼酸及 4.19 重 里％之蛾化鉀。再於固色槽78中進行固色，其溶液為4〇。〇， 3有3.14重量/〇之硼酸及3 86重量％之破化卸。進一步於第三 水洗槽80之UTC水中進行洗淨。最後於机下乾燥而獲得偏 光子。將所獲传之偏光子測定延伸倍率、幅寬(麵）、膜厚 )穿透率(Ys ’ ％)、偏光度(v，0/〇) '及色相b值結果如第 5圖之表中所示。 實施例2 如實_ 1所述之方式進行偏光子之製造，但將槽7〇的槽 溫調整為35。(：、及延伸槽的槽溫降為46 5χ：。將所獲得之偏光 子測疋延伸倍率、幅寬(mm)、膜厚（㈣、穿透率％，％)、偏 光度(V ’ ％)、及色相b值，結果如第5圖之表中所示。 比較例1 请參照第4圖，將寬度為65〇mm及厚度為乃以爪之未延 伸PVA膜50利用滾輪輸送，於做為膨潤槽的槽68中浸泡在 30 C之純水中進行膨潤處理後，於做為染色槽的槽7〇中的3〇 。(:碘溶液(含有0.048重量％之碘、約1重量％之硼酸、及約15 重量％之碘化鉀）中浸染。將經過浸染的PVA膜於做為第一水 洗槽的槽72中水洗液中進行處理，水洗液溫度為35七，含有3 重量％之硼酸及3重量％之碘化鉀。接著，於槽溫53。(：之延伸 槽74中進行延伸，延伸液含有3重量％之己二酸、〇 14重量％ 之氣化鋅、1重量％之硼酸、及4重量％之碘化鉀。接著，於第 二水洗槽76中進行水洗，水洗液溫度為3〇°c，.含有3重量％ 之硼酸及4重量％之碘化鉀。再於固色槽78中進行固色，其溶 液為30°C ’含有3重量％之硼酸及4重量％之碘化鉀。再於第 三水洗槽80之l〇°c水中進行洗淨。最後於6〇t下乾燥而獲得 偏光子。將所獲传之偏光子測定延伸倍率、幅寬(mm)、膜厚（以 j344020 • m)、穿透率(Ys，％)、偏光度(v，％)、及色相b值，結果如第 * 5圖之表中所示。 比較例2 請參照第4圖，將寬度為650 mm及厚度為75 之未延 伸PVA膜50利用滾輪輸送’於做為膨潤槽的槽68中浸泡在 3〇°C純水中進行膨潤處理後，將槽70做為染色槽，於槽70中 的30°C碘溶液中浸染。將槽72做為第一水洗槽，將經過浸染 的PVA膜於槽72之水洗液中進行處理，水洗液溫度為35°C， 含有3重量％之硼酸及3重量％之碘化鉀。接著，於槽溫53¾ 之延伸槽74中進行延伸。延伸液含有3重量％之己二酸、1重 量％之硼酸、0.14重量％之氣化鋅、及4重量％之碘化鉀。接著， 於第二水洗槽76中進行水洗，水洗液溫度為30°C，含有3重 量％之硼酸及4重量％之碘化鉀。再於固色槽78中進行固色， 其溶液為30°C，含有3重量％之蝴酸及4重量％之蛾化卸。再 於第三水洗槽80之10°C水中進行洗淨，最後於60。(：下乾燥 而獲得偏光子。將所得之偏光子測定延伸倍率、幅寬(mm)、膜 厚（"111)、穿透率(Ys ’ ％)、偏光度(V，％)、及色相b值，結果 如第5圖之表中所示。 比較例3 請參照第4圖’將寬度為650 mm及厚度為75//m之未延 伸PVA膜50利用滾輪輸送，於做為膨潤槽的槽68中浸泡在 28°C純水以進行膨潤處理後，於做為染色槽之槽70之碘溶液中 1344020 浸染。使用槽72做為處理槽，將經過浸染的pvA膜浸潰於處 理槽中之39°C之水溶液中以進行處理。槽72之水溶液中含有 2.5重量％之己二酸、〇 3重量。/〇之硫_呂水合物類⑷办灿·丄J 呼呼UZrU .. * In the present invention, it is not limited to the manufacture of moth-based polarizers, and therefore, the dye used for dyeing in step 104 / wood long-order can be a dichroic dye, except for the gorge. It is still an organic dye molecule and the like. Next, the PVA film may be optionally subjected to water washing in a first water washing tank after the dip dyeing and before the elongation process, as in the conventional conventional technique, wherein the first water washing tank contains a caustic acid and an aqueous solution which is dehydrated. Next, the impregnated PVA 臈 55 is subjected to step 1 〇 6, which is a stretching process of the pVA film. The PVA film 55 is subjected to a bismuth extension in a stretching bath solution 56 containing boric acid and potassium iodide, for example, a one-way extension (Wuniaxially stretching). wherein, the weight percent concentration of boric acid can be the degree of collapse used by conventional techniques, for example, about From about % by weight to about 1% by weight. The concentration of the deuterium (iv) can be a concentration used in the prior art, for example, from about 丨 to about 1% by weight. The boric acid and potassium molybdenum contained in the extended tank solution used often require regular monitoring of the content during the process. In the present invention, the quantification is easy and there is no problem. Yan Zhongjun's PVA film may need to be further washed with water, for example, by using a second water washing (four) which is commonly used in the art. Then, depending on the need - less than the fixing tank to fix the color. The solution in the second washing tank and the fixing tank may have boric acid and potassium iodide, and the concentration may be adjusted according to requirements, preferably each independently is 1% by weight, and the ratio is usually the same as that of boric acid and iodine in the extending tank. In the same way, the properties of the PVA film can be further improved. If there is still a need for 3, water washing is carried out two times more than the two times, and the second water used in the prior art can be used to wash the water 12 1344020 'using ice water (for example) About urc or lower temperature) The PVA film is removed from the chemical component remaining on the surface of the PVA film before drying. Then, in step 108, the extended pVA film 57 is dried, so that the PVA film 58 is obtained, that is, the county The method of the invention is a four-dimensional photon. The drying method is not limited, and may be dried by, for example, hot air drying or Han (infrared) drying. Continue to step 110 to make the pVA film 58 treated at step 108 and at least The layer 59 is subjected to a lamination process to form a three-layer bonding structure to fabricate a polarizer. The layer may include, for example, TAC, cellulose acetate (cellulite, DAC for short), and ethylene glycol vinegar (10) (four) Fine e t(10)phth Alate (referred to as PET), ring-difficult polymer (cyd〇〇iefinp〇iy mine, referred to as COP), cyclo-smoke complex (cycl〇〇lefin c〇pdymer, referred to as c〇c), polycarbonate (polycarb) 〇nate, referred to as pc) film and the like. Finally, in step U2, the laminated three-layer bonding structure 6 is applied to a drying process, for example, drying at about 50 to a thief to obtain a polarizer. There is no special job, and it can be dried, such as hot work or IR minus. In addition, in order to increase the functionality of the polarizer, for example, a liquid crystal layer, a protective layer, an anti-glare layer can be applied on the protective layer. An anti-reflective layer or a scratch-resistant antifouling treatment layer. A polarizing plate having different optical effects can be obtained by a combination of non-functional protection. 1344020 Hereinafter, several embodiments are specifically described, and the detailed description is based on the present invention. The method of manufacturing a polarizer of the invention is compared with the comparative example. The method of the present invention can be easily switched with a conventional process. Therefore, in the embodiment, the tank configuration of the prior art is directly used. However, as in Fig. 4 The configuration of the tank and the roller (or roller) is only the most A schematic diagram, the configuration of which can be varied according to actual needs. Example Embodiment 1 Referring to the schematic diagram of the conventional tank structure shown in FIG. 4, an unextended PVA 臈50 having a width of 650 mm and a thickness of 75/zm is used. The roller is transported, preceded by 28 in the tank 68. (: pure water swells) and then about 30 in the tank 70 as the pretreatment tank. (: Pretreatment in an aqueous solution. The aqueous solution of the tank 7 contains ^ 25% by weight of adipic acid and 〇.3% by weight of aluminum sulfate hydrate (Al2(S〇4)3 · 16~18H2〇). After this pretreatment, in the tank 72, 3: iodine Solution (containing iodine concentration of 0.033 by weight. /. The boric acid concentration was 〇 95% by weight, and the potassium iodide concentration was G.6 to G·8 weighs i%). The impregnated pvA film was stretched in a bathing tank 74 having a bath temperature of 51 C, and the extension liquid contained 335 wt% of rotten acid and 3.01 wt% of moth potassium. Next, water washing was carried out in the second washing tank %, and the water washing liquid temperature was 403⁄4, containing 327% by weight of boric acid and 4.19% by weight of moth potassium. Further fixing was carried out in the fixing tank 78, and the solution was 4 Torr. 〇, 3 has 3.14 weight / 〇 boric acid and 386 % by weight of the cracking and unloading. Further, it is washed in UTC water of the third washing tank 80. Finally, it is dried under the machine to obtain a polarizer. The obtained polarized photons were measured for stretching ratio, width (face), film thickness) transmittance (Ys '%), degree of polarization (v, 0/〇)', and hue b value as shown in Fig. 5. Shown in . Example 2 The production of a polarizer was carried out in the same manner as described in the above, except that the bath temperature of the groove 7 was adjusted to 35. (:, and the groove temperature of the extension groove is 46 5χ: The obtained polarizer is measured by the stretching ratio, the width (mm), the film thickness ((4), the transmittance %, %), and the polarization (V ' %) and h phase b values, the results are shown in the table of Fig. 5. Comparative Example 1 Referring to Fig. 4, a PVA film 50 having a width of 65 mm and a thickness of not extending the claws is conveyed by a roller. After immersing in 30 C of pure water in a tank 68 as a swelling tank, it is swelled in a tank 7 of a dyeing tank. (: iodine solution (containing 0.048% by weight of iodine, about 1) Dip-dyed in a weight percent boric acid and about 15% by weight potassium iodide. The impregnated PVA film was treated in a water bath in a tank 72 as a first water washing tank at a temperature of 35 7%, containing 3% by weight. Boric acid and 3% by weight of potassium iodide, and then extended at a bath temperature of 53. (: extension groove 74, the extension liquid contains 3% by weight of adipic acid, 14% by weight of zinc hydride, and 1% by weight Boric acid, and 4% by weight of potassium iodide. Then, the water is washed in the second water washing tank 76, the temperature of the water washing liquid is 3 ° C, and contains 3 weights. The boric acid and 4% by weight of potassium iodide are further fixed in the fixing tank 78, and the solution thereof is 30° C. containing 3% by weight of boric acid and 4% by weight of potassium iodide, and then in the third water washing tank 80. Wash in °c water. Finally, dry at 6 〇t to obtain a polarizer. Determine the extension ratio, width (mm), film thickness (by j344020 • m), and transmittance (Ys) of the obtained polarizer. , %), degree of polarization (v, %), and hue b value, the results are shown in the table of Figure 5. Comparative Example 2 Referring to Figure 4, the width is 650 mm and the thickness is 75. The PVA film 50 is immersed in a pure water of 3 ° C for swelling treatment in a tank 68 as a swelling tank, and the tank 70 is used as a dyeing tank, and is immersed in a 30 ° C iodine solution in the tank 70. The tank 72 is used as a first water washing tank, and the impregnated PVA film is treated in a water washing liquid of the tank 72, and the water washing liquid temperature is 35 ° C, containing 3% by weight of boric acid and 3% by weight of potassium iodide. The extension is carried out in the extending groove 74 of the groove temperature 533⁄4. The extension liquid contains 3% by weight of adipic acid, 1% by weight of boric acid, and 0.14% by weight of gas. Zinc and 4% by weight of potassium iodide. Then, the water is washed in the second washing tank 76 at a temperature of 30 ° C, containing 3% by weight of boric acid and 4% by weight of potassium iodide. Fixing, the solution is 30 ° C, containing 3% by weight of cyanic acid and 4% by weight of moth, and then washed in 10 ° C water of the third washing tank 80, and finally at 60. (: drying The polarizer is obtained, and the obtained polarizer is measured for the stretching ratio, the width (mm), the film thickness ("111), the transmittance (Ys '%), the degree of polarization (V, %), and the h phase b value. The results are shown in the table of Figure 5. Comparative Example 3 Referring to Figure 4, the unstretched PVA film 50 having a width of 650 mm and a thickness of 75/m was conveyed by a roller, and immersed in pure water at 28 ° C in a groove 68 as a swelling tank for swelling. After the treatment, it was dip-dyed in 1344020 in the iodine solution as the tank 70 of the dyeing tank. The groove 72 was used as a treatment tank, and the impregnated pvA film was immersed in an aqueous solution at 39 ° C in the treatment tank for treatment. The aqueous solution of the tank 72 contained 2.5% by weight of adipic acid and hydrazine. /〇Sulphur_Lu Hydrate (4)
16〜18^0)、及3.3重量％之碘化鉀。然後將經過處理之pVA 膜於槽溫52°C之延伸槽74中進行延伸，延伸液含有3 49重量 %之贿及4，13重量％之视_。接著，依序於第二水洗槽％ 中進行水洗，水洗液溫度為4(rc，含有3 29重量％之硼酸及 3.81重量％之碘化鉀，再於固色槽78中進行固色其溶液為 4〇t，含有3,8重量％之硼酸及4 3重量％之碘化鉀。進一步於 第三水洗槽80之UTC水巾進行洗淨。最後於贼下乾燥而獲 得偏光子。將㈣得之偏光子測找伸倍率、幅寬(mm)、膜厚 (//m)、穿透率(Ys，％)、偏光度(v，％)、及色相b值結果如 第5圖之表中所示。 由第5圖的表中可知，將實施例1及2與比較例1、2、及 3比較之巾田見與延展倍率並未增加，而膜厚較厚，使得在製 程中不易斷裂，偏光度及穿透料光學性f均為優良，b值則 大為改善至1.781及1.83卜可知使祕據本發明之製造偏光子 之方法，可輕易獲得具有更優越b值之糾子。進—步將實施 例1與實施例2做比較，可知在相同的延伸倍率下，變動其他 參數例如延伸槽溫料，仍可得到不會掉色的偏光子，亦即依 據本發明之方法之製程彈性大。 於上述依縣發明之實闕丨及2巾，係在隱膜染色前 1344020 , 使用含有己二酸的槽液處理PVA膜，由於PVA表面具有大量 的-OH基，故在加熱並添加適量的催化劑下，可在表面形 成酉曰鍵，由於己一酸在空間上為自由，因此會有化學鍵結結構 64及65二種鍵結結構產生。一端鍵結的己二酸可進一步增加 PVA膜在後續與保護層貼合時的黏著性，而雙端鍵結的己二 酸，則使得PVA膜的延展性大幅增加，故可容許高倍率的延伸 而不易斷裂。高倍率的延伸代表著材料利用率的提升，同時藉 φ 由滾輪、擴張輪等機構的輔助，亦也可得到更寬、更薄的偏光 子0 然而’與傳統的交聯劑爛酸比較之，己二酸的使用使得pVA 膜延展性提商’但其對抵抗掉色方面的助益卻低於硼酸。於比 較例1及2中，將己二酸與催化劑添加於延伸槽中與硼酸同時 使用，使PVA膜同時在硼酸及己二酸的作用下延伸。而從比較 例1及2的結果可知’此種製程雖可達到極高的延伸倍率及極 寬的幅寬，但產生的偏光子如上述會有嚴重掉色的情況，光學 性質較差。而於比較例3中，將己二酸及催化劑添加於延伸槽 之刖的水洗一槽(做為預處理槽）中使用，使pvA膜在經過染色 後，先經由己二酸的作用增加延展性，再經過延伸槽中的硼酸 進行父聯’使PVA膜中的碘較不易滲漏。此種製程具有額外的 優點’亦即由於使用額外的預處理槽進行己二酸與pVA的反 應’故在傳統製程以及本製程間的切換較為簡便，可有效節省 更換槽液造成的成本。然而，此種製程在經過最後的水洗製程 1344020 時，仍然會有掉色的現象。 換言之，若在PVA膜經過浸染之後，才使用二元敌酸做為 交聯劑而處理PVA膜的情況，由於二元羧酸對抵抗掉色方面的 助益低於硼酸，故在PVA膜後續的浸潤過程中，容易使染色槽 中染入的碘滲漏，使得產出的偏光子其光學性質被破壞。 鲁於本發明中’為避免掉色的問題，係將二元羧酸的處理步 驟提前至染色槽前，在染色槽前設置一預處理槽(槽液包括二元 羧酸及催化劑）’使PVA在染色前先經過具有至少二個羧基之 羧酸或其衍生物處理改善P VA的延展性，然後依照習知之製程 進行染色、延伸槽中（含有硼酸及碘化鉀)延伸、固色槽中(含有 硼酸及碘化鉀)固色，並於水洗槽中以清水洗淨，最後再經烘乾 得到偏光子。依據本發明之方法，保留了易於切換傳統製程與 本製权之優點，且因係於染色前先以具有至少二個竣基之叛酸 或其衍生物處理PVA膜，故不會因為硼酸處理時間的減少而導 致偏光子掉㈣魏。此外’錄pVA膜延祕的提升，故在 延伸槽的延伸過程中，延伸槽溫可有效降低而避免因槽溫高而 使藥液揮發過快。然而，由於己二酸的作用並非於延伸中或延 伸前實施’故對PVA膜的延展性提升幅度較小，因此產出的偏 光子巾田寬較小，膜厚較厚。但因使用了蝴酸以避免掉色的問題， ， &可產出光學性質較佳的偏光子。此外1延伸倍率尚可藉由其 ，他參數_細如m簡溫度、錄配置、延伸參數配置等 等）進-步提升。因此，依據本發明之方法仍因具有在染色前 U44020 對PVA進行交聯的步驟’而有許多優點及功效。 以上所述僅為本發明之較佳實施例，凡依本發明申請專利 圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 【圖式簡單說明】 第1圖顯示習知之偏光片剖面結構示意圖。 第2圖顯示使用依據本發明之製造偏光子之方法及製造偏 光片之方法之示意圖。 第3圖顯示PVA膜在經過二元羧酸處理後的表面結構示意 圖。 第4圖顯示習知技術之製造偏光子之槽體配置示意圖。 第5圖顯示依據本發明之二個實施例以及三個比較例所製 造之偏光子樣品測試結果之數據表。 【主要元件符號說明】 12偏光基體層 16保護層 20離形膜 50未延伸PVA膜 53 PVA 膜 55 PVA 膜 57 PVA 膜 10偏光片 14保護層 18感壓膠層 22保護膜 52第一溶液 54含碘溶液配方 56延伸槽溶液 2〇 1344020 58 PVA 膜 59保護層 60三層貼合結構 62氫氧基 64化學鍵結結構 65化學鍵結結構 68槽 70槽 72槽 74延伸槽 76第二水洗槽 78固色槽 80第三水洗槽 102、104、106、108、110、112 步驟16~18^0), and 3.3% by weight of potassium iodide. The treated pVA film was then extended in an extension tank 74 having a bath temperature of 52 ° C. The extension liquid contained 349% by weight of bribes and 4,13% by weight. Then, the water is washed in the second washing tank %, and the water washing liquid temperature is 4 (rc, containing 329% by weight of boric acid and 3.81% by weight of potassium iodide, and then fixing the solution in the fixing tank 78 to 4 〇t, containing 3,8 wt% of boric acid and 43% by weight of potassium iodide. Further washing with UTC water towel of the third water washing tank 80. Finally, drying under a thief to obtain a polarizer. (4) obtained photon The results of looking for magnification, width (mm), film thickness (//m), transmittance (Ys, %), degree of polarization (v, %), and hue b are shown in the table of Figure 5. As can be seen from the table of Fig. 5, the towel appearance and the stretching ratio of Examples 1 and 2 compared with Comparative Examples 1, 2, and 3 were not increased, and the film thickness was thick, so that it was not easily broken during the process. Both the degree of polarization and the optical property f of the penetrating material are excellent, and the b value is greatly improved to 1.78 and 1.83. It is known that the method of manufacturing a polarizer according to the present invention can easily obtain an entangled object having a superior b value. - Comparing Example 1 with Example 2, it can be seen that under the same stretching ratio, other parameters such as extending the groove temperature material can still be obtained. The polarizer which does not fade, that is, the process according to the method of the present invention has a large process flexibility. The above-mentioned invention and the 2 towel of the invention are treated with a bath containing adipic acid before the film is dyed 1344020. In the PVA film, since the surface of the PVA has a large amount of -OH groups, a ruthenium bond can be formed on the surface under heating and an appropriate amount of a catalyst, and since the acid is free in space, there are chemical bonding structures 64 and 65. The two bonding structures are produced. The adipic acid bonded at one end can further increase the adhesion of the PVA film to the subsequent adhesion to the protective layer, and the double-end bonded adipic acid greatly increases the ductility of the PVA film. Therefore, the extension of high magnification can be tolerated and it is not easy to break. The extension of high magnification represents the improvement of material utilization rate, and the wider and thinner photon is also obtained by the aid of the mechanism of the roller and the expansion wheel. However, compared with the traditional cross-linking agent, the use of adipic acid makes the pVA film ductile quotient' but its contribution to resisting color fading is lower than that of boric acid. In Comparative Examples 1 and 2, Diacid and catalyst addition The extension tank is used together with boric acid to extend the PVA film under the action of boric acid and adipic acid. From the results of Comparative Examples 1 and 2, it can be seen that the process can achieve extremely high stretching ratio and extremely wide width. Wide, but the resulting photon will be severely discolored as described above, and the optical properties are poor. In Comparative Example 3, adipic acid and a catalyst are added to the water tank of the stretching tank (as a pretreatment tank). Used in the process, after the dyeing of the pvA film, the ductility is first increased by the action of adipic acid, and then the boric acid in the extending tank is used for the parent to make the iodine in the PVA film less likely to leak. This process has an additional process. The advantage is that the use of an additional pretreatment tank for the reaction of adipic acid with pVA is simpler in the conventional process and the process, which can effectively save the cost of replacing the bath. However, this process will still fade when the final washing process 1344020 is passed. In other words, if the PVA film is treated with dibasic acid as a cross-linking agent after the PVA film is dip-dyed, since the dicarboxylic acid has a lower contribution to the resistance to color fading than boric acid, it is followed by the PVA film. During the wetting process, the iodine dyed in the dyeing tank is easily leaked, so that the optical properties of the produced polarizers are destroyed. In the present invention, in order to avoid the problem of color fading, the treatment step of the dicarboxylic acid is advanced to the dyeing tank, and a pretreatment tank (the bath including the dicarboxylic acid and the catalyst) is placed in front of the dyeing tank to make the PVA Before the dyeing, the carboxylic acid having at least two carboxyl groups or a derivative thereof is treated to improve the ductility of the PVA, and then dyed according to a conventional process, extending in a bath (containing boric acid and potassium iodide), and fixing the color tank (including Boric acid and potassium iodide) are fixed in color, washed with water in a washing tank, and finally dried to obtain a polarizer. According to the method of the present invention, the advantages of easy switching between the conventional process and the present control are retained, and since the PVA film is treated with a tickic acid or a derivative thereof having at least two mercapto groups before dyeing, it is not treated by boric acid. The decrease in time leads to the loss of the photon (four) Wei. In addition, the progress of the pVA film is improved. Therefore, during the extension of the extension groove, the temperature of the extension groove can be effectively reduced to avoid the evaporation of the liquid solution too fast due to the high temperature of the groove. However, since the action of adipic acid is not carried out during stretching or stretching, the ductility of the PVA film is less increased, so that the produced polarizer has a smaller width and a thicker film thickness. However, due to the use of the acid to avoid color loss, & can produce polarizers with better optical properties. In addition, the 1 extension ratio can be further improved by its parameter _ fine as m temperature, recording configuration, extension parameter configuration, etc. Therefore, the method according to the present invention still has many advantages and effects due to the step of crosslinking the PVA by U44020 before dyeing. The above are only the preferred embodiments of the present invention, and all changes and modifications made in accordance with the present invention should be within the scope of the present invention. [Simple description of the drawing] Fig. 1 is a schematic view showing the structure of a conventional polarizer. Fig. 2 is a view showing a method of producing a polarizer according to the present invention and a method of manufacturing a polarizer. Fig. 3 is a view showing the surface structure of the PVA film after being subjected to dicarboxylic acid treatment. Figure 4 is a schematic view showing the configuration of a tank for manufacturing a polarizer in the prior art. Fig. 5 is a view showing a data table of test results of polarizer samples prepared in accordance with two embodiments of the present invention and three comparative examples. [Main component symbol description] 12 polarizing substrate layer 16 protective layer 20 release film 50 is not extended PVA film 53 PVA film 55 PVA film 57 PVA film 10 polarizer 14 protective layer 18 pressure sensitive layer 22 protective film 52 first solution 54 Iodine solution formulation 56 extended bath solution 2〇1344020 58 PVA film 59 protective layer 60 three-layer bonding structure 62 hydroxyloxy 64 chemical bonding structure 65 chemical bonding structure 68 groove 70 groove 72 groove 74 extension groove 76 second water washing tank 78 Fixing tank 80 third washing tank 102, 104, 106, 108, 110, 112 steps