201005335 六、發明說明： 【發明所屬之技術領域】 本發明是有關用於製造偏光片（polarizing sheet)之 偏光片卷（polarizing sheet roll)、附有感壓式接著劑層 的偏光片卷，以及使用該卷之偏光片、液晶顯示裝置。 【先前技術】 近年來，消費電力低、以低電壓運作、輕量且薄型之 液晶顯示係作為行動電話、携帶資訊終端機、電腦用監示 器、電視等顯示資訊用裝置而急速普及成長中。伴隨液晶 技術之發展，而提案有各式各樣模式的液晶顯示器。例如 有稱為IPS(In-Plane Switching:共平面切換）模式之液 晶模式、VA(Vertical Alignment :垂直配向）模式、TN (Twisted Nematic :扭轉向列）模式等。 雖然存在有如此各種各樣模式之液晶顯示器，但幾乎 全部皆以稱為偏光片之薄膜作為必需構件。 液晶顯示裝置中，偏光片是在進行顯示時不可欠缺之 構件，由於幾乎在所有情形中皆為配置在液晶單元之兩面 而使用，故以作成2片為1組來使用。當其為如此之結構 時，有時會將配置在比液晶單元更靠近視認侧之偏光片稱 為前偏光片（front polarizing plate)，並將配置在背光 側之偏光片稱為後偏光片（rear polarizing plate)。 又，偏光片係使通過此偏光片後之光成為只在特定之 某一方向振動之光，亦即具有變成直線偏光之特徵之光學 構件。在如此之偏光片中，存在有吸收型、反射型、散射 4 321307 201005335 之 型等種類者，但在液晶顯示器中’最常使用者為雖然光 利用效率低，但偏光性能為最高之類型的吸收型偏光片。 偏光性能是以稱為偏光度（Py)之指標來作比較，其係 以下述式（1)來定義之值，其中，偏光度高者表示常發生偏 光之分離。在此，Tp、Tc是指藉由分光光度計進行偏光紫 外線可見吸收光譜測定所得之測定值，分別表示以入射之 直線偏光與平行偏光（parallel nicol)之關係而測定的透 =率（Tp)、¥正交偏光（cr〇ssnic〇i)之關係而測定的透母 偏光度（Py) = l〇〇x(Tp —Tc)/(Tp + Tc).. 又，在偏光片中也有以下述式（2)所定羲之式（1) 透過率（Ty)之指標，單體透過率愈高者，复 稱為單體 則越佳。 、光之利用致率 單體透過率（Ty) = 0. 5x(Tp + Tc) ❷ 總之，偏光度、單體透過率都高的 u .式（2) 良好之製品。 可說是性能 最近，如此之液晶顯示器在電視市 及，其畫面尺寸的大型化是處在急逮每中也已 為止’液晶電視尺寸之大型化的_.之狀沉。 尺寸的液晶單元（eell)」之部分為 =「如何製々 近已可製作如對角超過65吋之非常大己性者。然而 而變成偏光片的尺寸不足之狀況。1晶單元，現^ 大型液晶顯示器的構成幾乎多半 的吸收軸與電視之長邊方向平行 智己置成使前偏》 弋置成使後偏光少 201005335 吸收轴與前偏光片的吸收軸垂直。此時，後偏光片是變成 使其短邊方向成為吸收軸。 偏光片卷是捲成卷狀的偏光片，通常是將此偏光片卷 進行切片（ch i p-cut)(切下）成必要之大小而供前述之用 途。 通常之偏光片卷係朝卷之流動方向（卷之捲取方向或 其相反方向）延伸而製作者，因此，吸收軸一定會成為卷之 流動方向。在此情形下，若欲從偏光片卷進行切片而製作 後偏光片（偏光片小片）時，則為了從偏光片卷之寬方向切 下偏光片小片之長邊，而會使其尺寸之上限受限許多並變 得非常的小。相反地，在製作前偏光片時，為了使偏光片 卷之寬方向變成偏光片小片之短邊侧，其切下之尺寸的上 限非常大。 在如此之狀況中，目前為止雖以擴大偏光片卷之寬度 而予以對應，但為了達成此手段，則必需使裝置擴大寬幅 或使原片膜擴大寬幅。不論是上述之任何一種，當構成裝 置或偏光片之構件之任1者無法採取擴大寬幅對應時，偏 光片卷之寬度係難以擴大。又，因為在製造上之偏光片卷 之操作性等亦有所限制，所以，目前係以對角尺寸65吋左 右的偏光片為可能的對應上限。 另一方面，針對70吋以上之液晶顯示器，雖也有採取 使用連接2片後偏光片之手法，但接縫部分之顯示品質會 變差仍為現狀。 如上所述，雖然藉由使用寬度擴大之構件薄膜或寬度 6 321307 ^川05335 擴大之偏光 光片，作該產線’即可製作大型液晶電視用的大型偏 難以獲得^擴大化係在操作性等方面有所限制，而有 在如此才以上之液晶顯示器用之偏光片的課題。 构同之尺寸之，形中’方欲將後偏光片製作成與前偏光片 向垂直者即，、要獲仔使偏光片卷之吸收轴與卷之流動方 方向切 °。此時，由於後偏光片是與前偏光片在相同 另 故可達成相當大的大型化。 形成聚r已知在由熱塑性樹脂所構成的基材薄膜上 細醇糸樹脂的塗布岸，、查I 睹 進杆w β 曰曰μ布廣，連基材溥膜-起延伸後， 木17可製造薄的偏光片。例如，在曰本特開2000- :9號公報（專利文獻1，尤其請參照”專利範圍第2 項）係揭不·在熱塑性樹脂薄膜之單面，形成6“^以上汕 以下之厚度的聚乙稀醇系樹脂層，以該積層狀態直接 進行延伸後，予以染色，對於聚乙烯醇系樹脂層^偏光 性能，而作成薄的偏光片。 Φ 又，例如在日本特開2001_343521號公報（專利文 2) 中係揭示：以提供使用薄且收縮應力小的偏光薄膜之偏 光片為目的，一種在以聚乙烯醇系樹脂作為主成分之厚户 10# m以下之偏光薄膜的至少單面上貼合保護薄膜而成的 偏光片。再者，在日本特開2001-343522號公報（專利文獻 3) 係揭示：同樣以提供薄且收縮應力小的偏光薄膜為目 的，一種以經單軸延伸之聚乙烯醇系樹脂作為主成分且= 膜的厚度d( /zm)與延伸倍率e(倍）之乘積dxe為3〇 =下溥 偏光薄膜。在此等專利文獻2、3中，主旨是記载亦 2 321307 7 201005335 基材樹脂薄膜上塗布聚乙烯醇系樹脂而成的積層薄膜，藉 由拉幅（tenter)法而進行横向單軸延伸。 【發明内容】 本發明之目的係提供使偏光片之流動方向與吸收軸垂 直的偏光片卷。 本發明之偏光片卷係含有： 以選自由聚丙烯系樹脂、聚對苯二曱酸乙二酯系樹 脂、聚乙烯系樹脂及聚氯化乙烯系樹脂所成群組之透明樹 脂所形成的基礎薄膜（base film); 底漆層（primer layer);及 介由該底漆層而配置在該基礎薄膜上之由含有二色性 色素之聚乙烯醇樹脂所構成的偏光鏡（polarizer); 其中，該偏光鏡係使其吸收軸為在與卷之流動方向垂 直之方向，基礎薄膜係在與卷之流動方向垂直之方向進行 面内配向，並且，以下述式所定義之Δη係在0. 01以上： Δ η = ηχ — ny (在此，nx表示在薄膜面内使折射率成為最大之方向的折射 率，ny表示在薄膜面内與nx之方向垂直之方向的折射率）。 本發明之偏光片卷中，聚乙烯醇樹脂係以其皂化度在 98莫耳％以上，並且，聚合度在1000以上為佳。 本發明之偏光片卷中，底漆層係以由含有改質聚乙烯 醇樹脂及交聯劑的組成物所形成之透明樹脂層為佳。 又，本發明之偏光片卷係以在偏光片卷之偏光鏡側之 面介由接著劑層而配置有透明保護層者為佳。 201005335 又，本發明亦提供在上述本發明的偏光片卷之至少單 面形成有感壓式接著劑層的附有感壓式接著劑層之偏光片 卷。 又，本發明亦提供將上述本發明之附有感壓式接著劑 層的偏光片卷予以切片而成之偏光片。 又，本發明亦提供一種液晶顯示裝置，其備有液晶單 元、與上述本發明之附有感壓式接著劑層的偏光片，其中， 偏光片之前述感壓式接著劑層係貼合在前述液晶單元。 ® 若藉由偏光片之流動方向與吸收軸呈垂直的本發明之 偏光片卷，由於可將偏光片卷之寬方向作為短邊侧而將後 偏光片予以切片，故切下之後偏光片之尺寸的上限變得可 為相當的大。 【實施方式】 第1圖（a)係表示本發明的較佳之一例之偏光片卷1的 示意斜視圖，第1圖（b)係表示從第1圖（a)所示之偏光片 φ 卷1進行切片而成的本發明之偏光片（偏光片小片）11之示 意分解斜視圖。本發明之偏光片卷1係使其吸收軸為與卷 之流動方向垂直之方向的偏光片卷，其具備如下所述之基 本結構：在以透明樹脂所形成的基礎薄膜上，介由底漆層 而配置有以在聚乙烯醇樹脂中含有二色性色素所成的偏光 鏡。 在與卷之流動方向垂直的方向配置聚乙烯醇樹脂，為 了使其每單位厚度之位相差值（△ η )提高，就本發明之偏光 片卷所使用的基礎薄膜而言，必須為可進行將成為偏光鏡 9 321307 201005335 之聚乙烯醇樹脂層與基礎薄膜一起延伸等之處理者。此係 由於本發明之偏光片卷中，成為偏光鏡之聚乙烯醇樹脂的 △ η越高，則二色性色素之Δη亦變得越高，由該偏光片卷 所得之偏光片的性能變得越好之故。就本發明所使用的基 礎薄膜而言，係以在與卷之流動方向垂直的方向可延伸成 高倍率的薄膜為佳。從此觀點來看，本發明中，通常是使 用以屬於可高倍率延伸的結晶性樹脂之選自由聚丙烯系樹 脂、聚對苯二曱酸乙二酯系樹脂、聚乙烯系樹脂及聚氯化 乙烯系樹脂所成群組之透明樹脂所形成的基礎薄膜。其 〇 中，聚烯烴類等係因樹脂價格便宜之理由而為較佳。又， 以藉由將其組成比予以最適化而可達成延伸容易度與作為 保護薄膜之強度等的最適化之共聚合物等為佳。從此觀點 來看，上述中以屬於丙烯一乙烯共聚合物之丙烯系樹脂所 形成的基礎薄膜為佳。 將成為偏光鏡之聚乙烯醇樹脂與基礎薄膜一起延伸的 方法，通常可列舉如：以拉幅型延伸機等為代表的固定端 0 單軸延伸、或是以可在流動方向進行超餵（over feed)收縮 的針梳拉幅（pin tenter)為代表之延伸方法。以如此方法 進行延伸，即可獲得如本發明之偏光片卷中所使用之在與 卷之流動方向垂直的方向進行面内配置之基礎薄膜。 又，進行上述延伸處理時，密著在基礎薄膜的聚乙烯. 醇樹脂層之△η係與基礎薄膜的延伸方式而有很大之依存 關係。亦即，由於當基礎薄膜之配向狀態良好時，於基礎 薄膜上介由底漆層所配置的聚乙烯醇樹脂之配向狀態也可 10 321307 201005335 說是良好，故本發明之偏光片卷中之基礎薄膜的Δη是以 較高者為佳。本發明之偏.光片卷中，從獲得良好之透過率 與偏光度之關係的偏光薄膜的觀點而言，係使用Δη的值 為0. 01以上（較佳是0· 02以上，更佳是〇. 25以上）的基礎 薄膜。 但是，在此，所謂「基礎薄膜之△ η」係以面内之折射 率的異方性（anisotropy)所定義者，意指以藉由雙折射測 定裝置K0BRA-WPR(王子計測機器（股）製）等所測定之正面 延遲（ret ardat ion)作為基礎而計算之如下述式所定義之 每單位厚度的位相差值。 △ n= (nx-ny)==R0/d (在此’ nx表示在薄膜面内使折射率成為最大之方向的折射 率ny表不在薄膜面内與^之方向垂直之方向的折射率； 又’ R。表示正面延遲（⑽），d表示薄膜厚度（nm))。 參 此外’關於實際的偏光片卷，若欲測定基礎薄膜 使作為偏光鏡之聚乙，可採用 後’從基礎薄膜剝離而取得之方法等。之熱水中膨潤 聚乙埽醇Γ月之偏光片卷中’係使用由含有二色性备 偏光鏡係如第1 1。本發明之偏U卷 用作:L的方向。就聚乙缔醇樹脂而言二之 為乙酸乙稀醋之單獨聚合物的聚乙酸乙^可使 <外，亦 321307 11 201005335 可使用將乙酸乙烯酯及可與其共聚合之其他單體（例如，不 飽和羧酸類、烯烴類、乙烯醚類、不飽和磺酸類等）的共聚 物等藉由皂化而得者。201005335 VI. Description of the Invention: [Technical Field] The present invention relates to a polarizing sheet roll for manufacturing a polarizing sheet, a polarizing sheet roll with a pressure-sensitive adhesive layer, and A polarizer or a liquid crystal display device of the roll is used. [Prior Art] In recent years, low-voltage, low-voltage operation, lightweight and thin liquid crystal display systems have been rapidly growing as mobile information devices such as mobile phones, mobile information monitors, computer monitors, and televisions. . With the development of liquid crystal technology, liquid crystal displays of various modes have been proposed. For example, there is a liquid crystal mode called IPS (In-Plane Switching) mode, a VA (Vertical Alignment) mode, and a TN (Twisted Nematic) mode. Although there are liquid crystal displays of such various patterns, almost all of them are referred to as a film of a polarizer as an essential member. In the liquid crystal display device, the polarizer is a member which is indispensable for display, and is used in almost all cases on both sides of the liquid crystal cell. Therefore, two sheets are used in one set. When it is such a structure, a polarizer disposed closer to the viewing side than the liquid crystal cell is sometimes referred to as a front polarizing plate, and a polarizer disposed on the backlight side is referred to as a rear polarizer ( Rear polarizing plate). Further, the polarizer is such that the light passing through the polarizer becomes light that vibrates only in a specific direction, that is, an optical member having a characteristic of being linearly polarized. Among such polarizers, there are types such as absorption type, reflection type, and scattering type 4321307 201005335. However, in liquid crystal displays, the most common type is a type in which the light use efficiency is low, but the polarization performance is the highest. Absorbing polarizer. The polarizing performance is compared with an index called a degree of polarization (Py), which is a value defined by the following formula (1), wherein a high degree of polarization indicates separation of polarized light frequently. Here, Tp and Tc are measured values obtained by polarization-visible ultraviolet absorption spectrum measurement by a spectrophotometer, and show the transmittance (Tp) measured by the relationship between the incident linear polarization and the parallel polarized light (parallel nicol). The translucency (Py) measured by the relationship of the orthogonal polarized light (cr〇ssnic〇i) = l〇〇x(Tp - Tc) / (Tp + Tc).. Also, there are the following in the polarizer The formula (2) of the formula (2) The index of transmittance (Ty), the higher the monomer transmittance, the better the compound is called a monomer. , the utilization rate of light, monomer transmittance (Ty) = 0. 5x (Tp + Tc) ❷ In short, the degree of polarization and monomer permeability are high. (2) Good product. It can be said that the performance of the liquid crystal display is in the television market, and the size of the screen is so large that it is in the midst of an emergency. The part of the size of the liquid crystal cell (eell) is = "How to make a very large-scale person with a diagonal of more than 65 。. However, the size of the polarizer is insufficient. 1 crystal unit, now ^ The structure of a large-sized liquid crystal display is almost parallel with the long-side direction of the TV. The front-end bias is set so that the rear polarized light is less. 201005335 The absorption axis is perpendicular to the absorption axis of the front polarizer. At this time, the rear polarizer is The direction of the short side is the absorption axis. The polarizer roll is a polarizer that is wound into a roll, and the polarizer roll is usually sliced (cut) to a necessary size for the aforementioned Uses. Usually, the polarizer roll is produced in the direction of the flow of the roll (the winding direction of the roll or the opposite direction). Therefore, the absorption axis must become the flow direction of the roll. In this case, if the light is to be polarized. When the film roll is sliced to produce a rear polarizer (polarizer piece), the upper limit of the size of the polarizer piece is cut from the width direction of the polarizer roll, and the upper limit of the size is limited and becomes very small. . On the other hand, when the front polarizer is produced, in order to make the width direction of the polarizer roll into the short side of the polarizer piece, the upper limit of the size of the cut piece is extremely large. In such a case, the polarizer is expanded so far. Corresponding to the width of the roll, in order to achieve this means, it is necessary to enlarge the width of the device or to enlarge the width of the original film. In either case, any one of the components constituting the device or the polarizer cannot be taken. When the wide-format correspondence is expanded, the width of the polarizer roll is difficult to expand. Moreover, since the operability of the polarizer roll in manufacturing is also limited, it is possible to use a polarizer having a diagonal size of about 65 目前. On the other hand, for liquid crystal displays of 70 吋 or more, although the method of connecting two polarizers is used, the display quality of the seam portion is deteriorated. Use a widened member film or a polarized film with a width of 6 321 307 ^ chuan 05535 to make this line 'a large-scale partial use for making large LCD TVs. There are restrictions on the operability and the like, and there is a problem of a polarizer for a liquid crystal display that is more than that. In the same size, the shape of the rear polarizer is made perpendicular to the front polarizer. That is, it is necessary to obtain the absorption axis of the polarizer roll and the direction of the flow direction of the roll. At this time, since the rear polarizer is the same as the front polarizer, a considerable enlargement can be achieved. It is known that the coated bank of the fine oxime resin on the base film composed of the thermoplastic resin can be made thin, and the wood 17 can be made thin after the substrate 溥 film is stretched. For example, in the Japanese Patent Publication No. 2000-:9 (Patent Document 1, in particular, please refer to the second paragraph of the patent scope), it is not necessary to form 6" or more on one side of the thermoplastic resin film. The polyethylene-based resin layer having a thickness is directly stretched in the laminated state, and then dyed to form a thin polarizer for the polarizing performance of the polyvinyl alcohol-based resin layer. Further, for example, Japanese Laid-Open Patent Publication No. 2001-343521 (Patent Document 2) discloses a polarizer for providing a polarizing film having a small thickness and a small shrinkage stress, and a thickness of a polyvinyl alcohol-based resin as a main component. A polarizer in which a protective film is bonded to at least one surface of a polarizing film of 10 or less m. In addition, in order to provide a polarizing film having a small thickness and a small shrinkage stress, a polyvinyl alcohol-based resin which is uniaxially stretched as a main component is disclosed in Japanese Laid-Open Patent Publication No. 2001-343522 (Patent Document 3). = The product of the thickness d ( /zm) of the film and the stretching ratio e (times) dxe is 3 〇 = 溥 polarizing film. In the above-mentioned Patent Documents 2 and 3, the main purpose is to disclose a laminated film obtained by coating a base resin film with a polyvinyl alcohol-based resin, and performing lateral uniaxial stretching by a tenter method. . SUMMARY OF THE INVENTION An object of the present invention is to provide a polarizer roll in which the flow direction of the polarizer is perpendicular to the absorption axis. The polarizer roll of the present invention comprises: a transparent resin selected from the group consisting of a polypropylene resin, a polyethylene terephthalate resin, a polyethylene resin, and a polyvinyl chloride resin. a base film; a primer layer; and a polarizer composed of a polyvinyl alcohol resin containing a dichroic dye disposed on the base film via the primer layer; Wherein, the polarizer has an absorption axis in a direction perpendicular to a flow direction of the roll, and the base film is in-plane aligned in a direction perpendicular to a flow direction of the roll, and Δη defined by the following formula is 0 01 or more: Δ η = η χ - ny (here, nx represents a refractive index in a direction in which the refractive index is maximized in the film plane, and ny represents a refractive index in a direction perpendicular to the direction of nx in the plane of the film). In the polarizer roll of the present invention, the polyvinyl alcohol resin has a degree of saponification of 98 mol% or more, and a degree of polymerization of preferably 1,000 or more. In the polarizer roll of the present invention, the primer layer is preferably a transparent resin layer formed of a composition containing a modified polyvinyl alcohol resin and a crosslinking agent. Further, it is preferable that the polarizer roll of the present invention has a transparent protective layer disposed on the surface of the polarizer of the polarizer roll via the adhesive layer. Further, the present invention also provides a polarizing film roll with a pressure-sensitive adhesive layer formed with at least one surface of a polarizing adhesive layer on at least one side of the polarizer roll of the present invention. Further, the present invention provides a polarizing plate obtained by slicing the polarizing film roll with the pressure-sensitive adhesive layer of the present invention described above. Moreover, the present invention also provides a liquid crystal display device comprising a liquid crystal cell and a polarizer having the pressure-sensitive adhesive layer of the present invention, wherein the pressure-sensitive adhesive layer of the polarizer is attached to The aforementioned liquid crystal cell. ® If the polarizer roll of the present invention is perpendicular to the absorption axis by the flow direction of the polarizer, since the rear polarizer can be sliced by using the width direction of the polarizer as the short side, the polarizer is cut after The upper limit of the size can become quite large. [Embodiment] Fig. 1(a) is a schematic perspective view showing a polarizer roll 1 of a preferred embodiment of the present invention, and Fig. 1(b) is a view showing a polarizer φ roll shown in Fig. 1(a). 1 is a schematic exploded perspective view of a polarizer (polarizer piece) 11 of the present invention which is sliced. The polarizer roll 1 of the present invention is a polarizer roll having an absorption axis perpendicular to the flow direction of the roll, and has a basic structure as follows: a primer is formed on the base film formed of a transparent resin. A polarizer formed by containing a dichroic dye in a polyvinyl alcohol resin is disposed in the layer. The polyvinyl alcohol resin is disposed in a direction perpendicular to the flow direction of the roll, and in order to increase the phase difference (Δη) per unit thickness, the base film used in the polarizer roll of the present invention must be made A processor that extends the polyvinyl alcohol resin layer of the polarizer 9 321307 201005335 together with the base film. In the polarizer roll of the present invention, the higher the Δη of the polyvinyl alcohol resin which becomes the polarizer, the higher the Δη of the dichroic dye, and the performance of the polarizer obtained from the polarizer roll becomes The better it is. The base film used in the present invention is preferably a film which can be extended to a high magnification in a direction perpendicular to the flow direction of the roll. From this point of view, in the present invention, it is generally selected from a polypropylene resin, a polyethylene terephthalate resin, a polyethylene resin, and a polychlorinated resin which are crystalline resins which can be extended at a high magnification. A base film formed of a transparent resin in a group of vinyl resins. Among them, polyolefins and the like are preferred because of the low cost of the resin. Further, it is preferable to optimize the composition ratio, and to achieve an optimum ease of elongation, an optimum polymer or the like as the strength of the protective film, and the like. From this point of view, the base film formed of the propylene-based resin which is a propylene-ethylene copolymer is preferable. The method of extending the polyvinyl alcohol resin to be a polarizer together with the base film is generally exemplified by a uniaxial extension of a fixed end 0 represented by a tenter type stretching machine or the like, or superfeeding in a flow direction ( Over feed) The contracted pin tenter is a representative extension method. By stretching in this manner, a base film which is disposed in-plane in a direction perpendicular to the flow direction of the roll as used in the polarizer roll of the present invention can be obtained. Further, when the above-mentioned stretching treatment is carried out, the Δη-line of the polyethylene-alcohol resin layer adhered to the base film has a large dependence on the manner in which the base film is stretched. That is, since the alignment state of the polyvinyl alcohol resin disposed on the base film via the primer layer is good when the alignment state of the base film is good, it is said to be good in the polarizer roll of the present invention. The Δη of the base film is preferably the higher. In the polarizing film of the present invention, from the viewpoint of obtaining a polarizing film having a good relationship between the transmittance and the degree of polarization, the value of Δη is preferably 0.01 or more (preferably 0 or more, more preferably It is a base film of 〇. 25 or more. However, the "Δ η of the base film" is defined by the anisotropy of the refractive index in the plane, and means that the device is measured by the birefringence measuring device K0BRA-WPR (Prince Measurement Machine) The phase difference calculated per unit thickness as defined by the following formula is calculated based on the measured front side retardation. Δ n= (nx-ny)==R0/d (wherein 'nx denotes a refractive index ny in a direction in which the refractive index becomes maximum in the plane of the film, and a refractive index in a direction perpendicular to the direction of the film in the plane of the film; Further, 'R. indicates a front retardation ((10)), and d indicates a film thickness (nm)). In addition, as for the actual polarizer roll, if the base film is to be used as the polarizer of the polarizer, a method of peeling off from the base film or the like can be employed. The swelling in the hot water is carried out in the polarized film roll of the polyethylene glycol. The use of a dichroic-containing polarizer is as described in the first one. The partial U-volume of the present invention is used as the direction of L. In the case of a poly(ethylene glycol) resin, a polyacetic acid of a separate polymer of ethylene vinegar can be used. Further, 321307 11 201005335 can use vinyl acetate and other monomers copolymerizable therewith ( For example, a copolymer of an unsaturated carboxylic acid, an olefin, a vinyl ether, an unsaturated sulfonic acid, etc. is obtained by saponification.
又，本發明之偏光鏡所使用之聚乙烯醇樹脂係由於耐 水性優異，故皂化度以98. 0莫耳％以上為佳，99.0莫耳％ 以上更佳。此外，同樣從财水性優異之觀點而言，本發明 之偏光鏡所使用之聚乙烯醇樹脂係以聚合度在1000以上 為佳，在1500以上更佳。作為具有此等適當之皂化度及聚 合度的聚乙烯醇樹脂者，具體上可適合使用：PVA117(皂化 度：98. 0 至 99. 0 莫耳％，聚合度：1700)( Kuraray(股）製）、 PVA117H (皂化度：99. 3莫耳％以上，聚合度：1700)( Kuraray (股）製）、PVA124 (皂化度：98. 0至99. 0莫耳％，聚合度： 約 2400)( Kuraray(股）製）、Kuraray Vinylon VF~PS#7500 (皂化度：99, 3以上，聚合度：約2400)等市售品。 沈t乙烯醇樹脂中所含之二色性色素而言Further, the polyvinyl alcohol resin used in the polarizer of the present invention is excellent in water resistance, so the degree of saponification is preferably 98.0 mol% or more, more preferably 99.0 mol% or more. Further, from the viewpoint of excellent water solubility, the polyvinyl alcohol resin used in the polarizer of the present invention preferably has a polymerization degree of 1,000 or more, more preferably 1,500 or more. As the polyvinyl alcohol resin having such a suitable degree of saponification degree and degree of polymerization, specifically, it can be suitably used: PVA117 (saponification degree: 98. 0 to 99.0% by mole, degree of polymerization: 1700) (Kuraray) , PVA117H (saponification degree: 99.3 mol% or more, degree of polymerization: 1700) (manufactured by Kuraray Co., Ltd.), PVA124 (saponification degree: 98. 0 to 99. 0 mol%, degree of polymerization: about 2400) (Kuraray Co., Ltd.), Kuraray Vinylon VF~PS#7500 (saponification degree: 99, 3 or more, degree of polymerization: about 2400) and other commercial products. In the case of dichroic pigments contained in the t-vinyl alcohol resin
碘、二色性染料等。在二色性染料中，包含例如由c. L Direct Red 39等雙偶氮化合物（disaz〇 c〇即〇und)所構居 之二色性直接染料’由三重氮㈤)、四重氣 (tetrakisazo)等化合物所構成之二色性直接染料。 本發=偏光#卷係在基礎薄膜與偏紐之間存有肩 漆層。該底漆層是用以使偏 ^^ ™ .如 之侷先鏡與基礎溥膜間的密著性變 日4，#a#4ππ 滑形下，當將偏光鏡進行染色 光鏡從基礎薄膜剥離之不良狀況。 底漆層並無限制m 儿 見用對水之溶解性高的聚改質乙 321307 12 201005335 烯醇則使溶液之製作變成容易，並因可獲得低黏度之良好 水溶液，而有塗布性變良好之優點。再者，藉由將交聯劑 組合於其中而使用’即可在製膜後得到良好之耐水性。從 此等觀點來看，以含有改質聚乙烯醇樹脂及交聯劑之組成 物所形成的透明樹脂層為佳。改質聚乙埽醇樹脂是指已施 加陽離子改質、陰離子改質等離子性改質之聚乙烯醇樹 月曰，具體上可列舉如經缓基改質之聚乙稀醇樹脂之KL_5〇6 (由Kuraray (股）公司販售）、經乙醯乙醯基改質之聚乙烯 ❹醇樹脂之GOHSEFIMER Z200(由日本合成化學工業（股）販售） 等。 " 就底漆層所使用之交聯劑而言，例如可列舉如聚醯胺 壞氧樹月曰、戊—酸·或乙二酸二酮類、經曱基化三聚氰胺 樹脂、硝酸氧鍅（zirconyl nitrate)或鈦螯合物等水溶性 之金屬錯合物等，為了得到與基材之良好接著性，以聚醯 胺環氧樹脂為佳。聚醯胺環氧樹脂例如可使用令由如二伸 瘳乙二胺或二伸乙四胺等聚伸烧基多胺與如己二酸等二竣酸 反應而得的聚醯胺多胺、與環氧氯丙烷（epichl〇r〇hydrin) 反應而得者，具體上，可列舉如SumirazeResin 65〇(3〇)(由 住化Chemtex(股）販售）等。 上述之本發明的偏光片卷，例如可依據含有下述（A) 至（C)之步驟的方法來製作： (A) 將偏光鏡所使用之聚乙烯醇樹脂介由底漆層而塗布在 基礎薄膜上，獲得積層薄膜之步驟； (B) 將（A)步驟所得之積層薄膜以拉幅機等進行固，定端橫 321307 13 201005335 向單軸延伸並予以配向，而得到配向薄膜之步騍； (C)將（B)步驟所得之配向薄膜予以染色之步驟。 在上述（A)步驟中，首先，例如將含有上述改質聚乙烯 醇樹脂及交聯劑之組成物（底漆層用PVA水溶液）塗布在預 先經施行電暈放電處理之基礎薄膜上，並在形成的底漆層 上塗布聚乙烯醇樹脂之水溶液（偏光鏡用PVA水溶液）。二 時，聚乙烯醇樹脂之水溶液可依據如下述之方法製作。首 先，在常溫之水中浸潰聚乙烯醇使其膨潤。之後，將水溫 加熱至60°C以上，使聚乙烯醇樹脂充分溶解。所得之聚乙 ❹ 烯醇樹脂之水溶液可直接以具有附調整溫度機能的塗布噴 頭之塗布機等塗布在基礎薄膜上，亦可作成暫時冷卻到室 溫之聚乙浠醇樹脂之水溶液後，在常溫下以一般之塗 塗布在基礎薄膜上。 ~機 塗布聚乙烯醇樹脂水溶液的方式並無特別限定，可列 舉如一般所謂之塗布方式，例如凹版塗布方式、模具塗布 (die coating)方式、標點式塗布（c〇mma⑶以丨吨）方气、 唇式塗布（1 ip coating)方式等。 〇 在上述（B)步驟中，可將上述（A)步驟所得之積層薄膜 連同基礎薄膜-起施行橫向延伸，惟延伸方法並無限制。、 例如，可為以拉幅機等為代表之固定端橫向單軸延 伸’也可為以使用針梳拉幅機等—面收縮流動方向—面進 行橫向延伸之超餵橫向延伸。 又，關於上述（C)步驟中之染色方法並無限制，可依一 般的條件進行。例如，可為下述方法：將上述配向薄膜依 321307 14 201005335 =浸潰於由4G°C至赃左右之溫水所構成的膨潤槽、由蛾 /，、化钟之水溶液所構成之染色槽、由在啊至 水中溶解爛酸而成的交聯槽之方法等。 其中，染色槽也可為由溶解蛾以外之二色性色素而成 者0 人本發明之偏光片卷係以在偏光片卷之偏光鏡側之面， 介由接著劑層而配置透明保護層為較佳。透明保護層可列 ❹舉如：環稀烴系樹脂薄膜；三乙醯基纖維素、二乙酸基纖 維素等乙酸纖維素系樹脂薄膜；聚對苯二甲酸乙二酯、聚 f甲酸乙二g旨、聚對苯二甲酸了二酯等聚醋系樹脂薄膜； ，杈酸酯系樹脂薄膜、丙烯酸系樹脂薄膜、聚丙烯系樹脂 薄膜等該領域中以往即廣泛使用之薄膜。 本發明中之透明保護層所使用的環稀烴系樹脂薄膜， 可使用適當之市售品，例如T〇pas(Ticona公司製）、-ART0N (】沾（股）公司製）、ZE0N0R(日本Zeon(股）公司製）、ΖΕ0ΝΕΧ © (曰本Ze〇n(股）公司製）、Apelb井化學（股）公司製）等。 如此之環烯烴系樹脂在製膜成薄膜時，可適當使用溶劑澆 轉法、熔融擠壓法等習知的方法。又，例如亦可使用Escena (積水化學工業（股）公司製）、SCA40(積水化學工業（股） 製）、ZE0N0RFILM(0ptes(股）製）等預先製膜之環烯烴系樹 月旨製的薄膜市售品。 又’本發明中可作為保護薄膜使用之乙酸纖維素系樹 月旨薄膜’可使用適當之市售品，例如：FujitacTD80(富士 薄媒（股）公司製）、Fujitac TD80UF(富士薄膜（股）公司 15 321307 201005335 製）、Fujitac TD80UZ(富 士薄膜（股）公司製）、Fujitac TD40UZ (富士薄膜（股）公司製）、KC8UX2M (K〇nica以⑽⑽ opto(股）公司製）、KC4UY(K〇nica 〇pt〇(股）公 製）等。 用以貼合偏錢與透明賴狀接著劑，從將接著劑 層製成較薄者的觀點而言，可列舉如水系者，亦即，將接 著劑成分溶解在水中而成者、或分散在水中而成者。例如， 較佳之接著劑可列舉如使用聚乙婦醇樹脂或胺醋樹腊 (urethane resin)作為主成分之組成物。 ¥使用聚乙烯醇系樹赌作為接著劑之主成分時，該 ^烯醇樹脂除了可為部分4化聚乙_、完全皂化聚L婦 外’也可為縣改質聚乙稀醇、乙醯乙醯基改質聚乙 甲基改f聚乙辆、胺基改質聚乙稀醇等經改質 ==T此時，聚乙之水溶液係作 二劑中之聚乙烯醇系_之濃度係相對 :::質1份，通常是丨™份’而以⑴質量 隹田眾乙 了提•、:、樹月日之水溶液所構成的接著劑中，為 成：·，以添加乙二醛、水溶性環氧樹脂等硬化性 二為水溶性環氧樹脂者，可適宜使用 酸等二紐反岸三伸乙四胺等聚伸燒基多胺與己二 之聚醯胺多胺環氧齡 胺，與環錢狀反應而得 之市售品者，可列心：作為相關之聚醯胺多胺環氧樹脂 牛如 sumiraze Resin 650(住化 Che射 321307 16 201005335 (股）製）、sumiraze Resin 675(住化 chemtex (股 WS-525(日本PMC(股）製）等。此等硬化性成分、交聯劑之 添加量（-起添加時則為其合計量），相對於 脂100重量份，通常邱私糸樹 份為佳。 至⑽重篁伤，而以1至50重量 至小ΐ面t發明係提供在上述任何之本發明的偏光片卷之 ο 偏in f感壓式接著劑層之附擔式接著劑層的 丨4錢式接著綱所制的感 限制地使用以往習知的適當之黏❹丨者^ 劑等二中^胺明著劑、聚魏（Si 1 i_)系黏著 性等之觀_看，力、可錢、再加工（rework) 黏著可依有機溶劑溶液之形式來使用此等 魯 材薄膜上；具塗布機或凹版塗布機等而塗布在基 並依使其乾燥之方法而設置感壓式 二此之外，亦可藉由將在已實施離型處理: 法:::)二薄片狀黏著劑轉印至基材薄膜之方 之‘片t發Γ提供將上述本發明之附有感堡式接著劑層 係:i t:片而成之偏光片(偏光片小片)。第丄 光片（偏光片片所偏光片卷1切片而成之本發明之偏 11，例如如第、1=:意分解斜視圖。本發明之偏光片 圖⑻所不，備有在基礎薄膜12上介由底 321307 17 201005335 漆層14而積層偏光鏡（偏光薄膜）13之結構。第1圖（b)所 例示之偏光片11係切片成長方形且其短邊方向成為吸收 軸者，可適合作為在液晶顯示器中於背光側所配置的後偏 光片使用。 本發明再提供：備有液晶單元、與上述之本發明偏光 片，且偏光片之前述感壓式接著劑層是貼合在前述液晶單 元之液晶顯示裝置。本發明之液晶顯示裝置中，有關上述 特徵以外之部分，可採用以往習知之液晶顯示裝置的適當 構成，關於液晶顯示裝置在液晶面板以外所通常備有之構 成要件（光擴散板、背光等）係無限制者。 以下列舉實施例及比較例更詳細說明本發明，惟本發 明並不侷限於此。 <實施例1至7、比較例1至3> (底漆層用PVA水溶液之製作） 在100重量份水中，混合乙醯乙醯基改質聚乙烯醇樹 脂（GOHSEFIMER Z200，由日本合成化學工業（股）販售）1. 5 重量份，在室溫下短時間膨潤後，昇溫到90°C，一面攪拌 1小時一面使聚乙烯醇樹脂溶解而得到均勻之水溶液。在 此聚乙稀醇樹脂中加入聚酿胺環氧樹脂（Sumiraze Resin 650(30)，住化Chemtex (股）製）1. 25重量份而得到底漆層 用PVA水溶液。 (偏光鏡用PVA水溶液之製作） 在由Kuraray(股）所販售之下述表1所示之聚乙烯醇 樹脂顆粒中加入水，靜置一晚使其膨潤。調整固體份量而 18 321307 201005335 e 使裝成之水命液之點度成為約12的咖·咖後昇溫到 90 C授拌4小時而使聚乙烤醇樹脂顆粒溶解。其次，冷 卻到室溫，得到水溶液。但是由於表1中之⑽即㈣#75〇〇並無以樹脂顆粒販售，故將得到之 薄膜薄片切成邊長2em左右之正方形，浸在約桃的溫水 中並以甘mi ’在7(rc進行真空乾燥4小時，然後再 供以使用。 [表1] PVA117Iodine, dichroic dye, etc. Among the dichroic dyes, for example, a dichroic direct dye consisting of a disazo compound (disaz〇c〇, ie, und) such as c. L Direct Red 39 is composed of triazo (5), tetragen ( A dichroic direct dye composed of a compound such as tetrakisazo). This hair = polarized # roll system has a shoulder paint layer between the base film and the partial button. The primer layer is used to make the adhesion between the precursor and the base film 4, #a#4ππ, when the polarizer is dyed from the base film. Bad condition of stripping. There is no restriction on the primer layer. Poly-modified B with high solubility in water is used. 321307 12 201005335 Enol makes the preparation of the solution easy, and the coating property becomes good because a good aqueous solution with low viscosity can be obtained. The advantages. Further, by using a crosslinking agent in combination, it is possible to obtain good water resistance after film formation. From these viewpoints, a transparent resin layer formed of a composition containing a modified polyvinyl alcohol resin and a crosslinking agent is preferred. The modified poly(ethylene glycol) resin refers to a polyvinyl alcohol tree which has been subjected to cationic modification and anion modification, and specifically, KL_5〇6 of a polyethylene resin which has been modified by a slow base. GOHSEFIMER Z200 (sold by the Japan Synthetic Chemical Industry Co., Ltd.), which is sold by Kuraray Co., Ltd., and polyethylene sterol resin modified by acetonitrile. " For the crosslinking agent used in the primer layer, for example, polyamine oxynium oxyphyllin, pentanoic acid or oxalic acid diketone, thiolated melamine resin, cerium nitrate A water-soluble metal complex such as a zirconyl nitrate or a titanium chelate compound or the like is preferably a polyimide resin in order to obtain good adhesion to a substrate. The polyamine amine epoxy resin can be, for example, a polyamine polyamine which is obtained by reacting a polyalkylene polyamine such as diethylene glycol diamine or diethylenetetramine with dicarboxylic acid such as adipic acid. Specific examples of the reaction with epichlorohydrin (epichl〇r〇hydrin) include Sumiraze Resin 65® (3〇) (sold by Chem Chemex). The polarizer roll of the present invention described above can be produced, for example, according to the method comprising the following steps (A) to (C): (A) The polyvinyl alcohol resin used in the polarizer is applied through a primer layer. Step of obtaining a laminated film on the base film; (B) solidifying the laminated film obtained in the step (A) by a tenter or the like, and extending the uniaxial 321307 13 201005335 to uniaxially and aligning, thereby obtaining a step of aligning the film (C) a step of dyeing the alignment film obtained in the step (B). In the above step (A), first, for example, a composition containing the modified polyvinyl alcohol resin and a crosslinking agent (a PVA aqueous solution for a primer layer) is applied onto a base film which has been subjected to corona discharge treatment in advance, and An aqueous solution of a polyvinyl alcohol resin (a PVA aqueous solution for a polarizer) was applied to the formed primer layer. At the second time, an aqueous solution of a polyvinyl alcohol resin can be produced according to the method described below. First, the polyvinyl alcohol is immersed in water at normal temperature to swell. Thereafter, the water temperature was heated to 60 ° C or higher to sufficiently dissolve the polyvinyl alcohol resin. The aqueous solution of the obtained polyethylenol resin can be directly applied to the base film by a coating machine having a coating head having a function of adjusting the temperature, or can be used as an aqueous solution of a polyethylene glycol resin which is temporarily cooled to room temperature. It is applied to the base film by a general coating at normal temperature. The method of coating the polyvinyl alcohol resin aqueous solution is not particularly limited, and examples thereof include a general coating method such as a gravure coating method, a die coating method, and a punctuation coating method (c〇mma (3) in terms of xanthene). , lip coating (1 ip coating) and so on. 〇 In the above step (B), the laminated film obtained in the above step (A) may be laterally extended together with the base film, but the stretching method is not limited. For example, it may be a laterally uniaxial extension of the fixed end represented by a tenter or the like, or a super-feeding lateral extension in which the surface is contracted in a flow direction using a needle comber or the like. Further, the dyeing method in the above step (C) is not limited and can be carried out under ordinary conditions. For example, it may be a method in which the above-mentioned alignment film is immersed in a swelling tank composed of warm water of about 4 G ° C to about 321307 14 201005335, and a dyeing tank composed of an aqueous solution of moth/, clock A method of dissolving a cross-linking groove formed by dissolving rotten acid in water. In addition, the dyeing tank may be formed by dissolving a dichroic dye other than moth. The polarizer of the present invention is provided on the surface of the polarizer of the polarizer roll, and a transparent protective layer is disposed via the adhesive layer. It is better. The transparent protective layer may be listed as a ring-like thin resin film; a cellulose acetate resin film such as triethylenesulfonyl cellulose or diacetic acid cellulose; polyethylene terephthalate or polyethylene terephthalate g, a polyester resin film such as polybutylene terephthalate; a film which has been widely used in the past, such as a phthalate resin film, an acrylic resin film, and a polypropylene resin film. The cycloaliphatic resin film used for the transparent protective layer in the present invention may be a commercially available product, for example, T〇pas (manufactured by Ticona Co., Ltd.), -ART0N (made by Shisei Co., Ltd.), and ZE0N0R (Japan). Zeon Co., Ltd., ΖΕ0ΝΕΧ © (manufactured by Z本Ze〇n Co., Ltd.), Apelb Well Chemical Co., Ltd., etc. When a cycloolefin-based resin is formed into a film, a conventional method such as a solvent casting method or a melt extrusion method can be suitably used. In addition, for example, it is also possible to use a pre-formed cycloolefin system such as Scena (made by Sekisui Chemical Co., Ltd.), SCA40 (made by Sekisui Chemical Co., Ltd.), or ZE0N0RFILM (made by 0ptes). Commercially available film. Further, in the present invention, a cellulose acetate-based film which can be used as a protective film can be used as a commercially available product, for example, Fujitac TD80 (manufactured by Fujifilm Co., Ltd.), Fujitac TD80UF (Fuji Film Co., Ltd.) Company 15 321307 201005335), Fujitac TD80UZ (made by Fujifilm Co., Ltd.), Fujitac TD40UZ (made by Fujifilm Co., Ltd.), KC8UX2M (K〇nica (10) (10) opto Co., Ltd.), KC4UY (K〇) Nica 〇pt〇 (shares) metric system, etc. For the purpose of bonding a foreign currency and a transparent adhesive, from the viewpoint of making the adhesive layer thinner, for example, a water-based one, that is, an adhesive component is dissolved in water, or dispersed. Made in the water. For example, a preferred adhesive agent is a composition using, for example, a polyethylene glycol resin or an urethane resin as a main component. When using polyvinyl alcohol-based tree gambling as the main component of the adhesive, the ethylenol resin can be partially modified, and completely saponified, and can also be modified by the county.醯 醯 改 改 改 改 改 改 改 改 改 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 = = = = = = = = = = = = = = = The concentration system is relative to::: 1 part of the mass, usually 丨TM part', and (1) the quality of the 隹田众乙提,,:, the sap of the aqueous solution of the tree, the composition of the::, to add B Diacids, water-soluble epoxy resins and other hardenable two are water-soluble epoxy resins, and it is suitable to use a poly-anthracene polyamine such as an acid or the like Epoxy-aged amines, which are commercially available in the form of a ring-shaped reaction, can be listed as a related polyamine polyamine epoxy resin such as sumiraze Resin 650 (Shouhua Che 321307 16 201005335 (share) system ), sumiraze Resin 675 (Sumiyuki chemtex (shares WS-525 (made by Japan PMC)), etc. The addition amount of these hardening components and crosslinking agents (- The total amount thereof is preferably 100% by weight of the fat, and is preferably a sap of the saplings of the present invention. (10) Heavy scratches, and 1 to 50 weights to the small surface of the invention. The thickness of the adhesive layer of the pressure-sensitive adhesive layer of the pressure-sensitive adhesive layer is limited to the conventionally known suitable adhesives. The concept of adhesion, poly (Si 1 i_) adhesion, etc. _ see, force, money, rework adhesive can be used in the form of organic solvent solution; with coating machine Or a gravure coater or the like may be applied to the base and the pressure-sensitive type may be provided by drying it, or by transferring the two-sheet adhesive after the release treatment: Method:::) The sheet to the base film is provided with a polarizer (polarizer piece) which is attached to the above-mentioned invention with a barrier layer of an adhesive layer: it: a sheet of light (a polarizing sheet) The polarizer 11 of the present invention obtained by slicing the polarized film roll 1 is, for example, the first and the first =: the oblique view of the polarizer (8) of the present invention. There is a structure in which a polarizing mirror (polarizing film) 13 is laminated on the base film 12 via the lacquer layer 14 of the bottom portion 321307 17 201005335. The polarizing film 11 illustrated in Fig. 1(b) is sliced into a rectangular shape and its short side direction is absorbed. The shaft can be suitably used as a rear polarizer disposed on the backlight side in a liquid crystal display. The present invention further provides a liquid crystal cell, the polarizing plate of the present invention described above, and the pressure-sensitive adhesive layer of the polarizer. In the liquid crystal display device of the present invention, a liquid crystal display device of the present invention may adopt a configuration of a conventional liquid crystal display device other than the above-described features, and the liquid crystal display device is usually prepared other than the liquid crystal panel. There are no restrictions on the constituent elements (light diffusing plate, backlight, etc.). The invention will be described in more detail below by way of examples and comparative examples, but the invention is not limited thereto. <Examples 1 to 7, Comparative Examples 1 to 3> (Preparation of a PVA aqueous solution for a primer layer) In 100 parts by weight of water, an ethyl hydrazine-modified polyvinyl alcohol resin (GOHSEFIMER Z200, synthesized by Japanese synthetic chemistry) was mixed. Industrial Co., Ltd. sold 1.5 parts by weight, and after swelling at room temperature for a short period of time, the temperature was raised to 90 ° C, and the polyvinyl alcohol resin was dissolved while stirring for 1 hour to obtain a uniform aqueous solution. To the polyvinyl alcohol resin, 1.25 parts by weight of a polystyrene epoxy resin (Sumiraze Resin 650 (30), manufactured by Chem Chemex Co., Ltd.) was added to obtain a PVA aqueous solution for a primer layer. (Preparation of a PVA aqueous solution for a polarizer) Water was added to the polyvinyl alcohol resin pellets shown in the following Table 1 sold by Kuraray, and allowed to stand overnight to be swollen. Adjusting the amount of solids 18 321 307 201005335 e The temperature of the liquid water to be filled is about 12, and then the temperature is raised to 90 C and mixed for 4 hours to dissolve the polyethylene glycol resin particles. Next, it was cooled to room temperature to obtain an aqueous solution. However, since (10) in Table 1 (4) #75〇〇 is not sold as resin particles, the obtained film sheet is cut into a square having a side length of about 2 em, and immersed in warm water of about peach and (rc was vacuum dried for 4 hours and then supplied for use. [Table 1] PVA117
PVA117H PVA124PVA117H PVA124
Kuraray Vinylon VF-PSI7500 商品名Kuraray Vinylon VF-PSI7500 trade name
聚合度 1700左右 1700左右 2400左右 3以上 2400左右 固形分量 (wt%) 黏度 (mPa · s) 10. 8. 10. 7. 1273 1211 1114 1250Degree of polymerization 1700 or so 1700 or so 2400 or so 3 or more 2400 or so Solid content (wt%) Viscosity (mPa · s) 10. 8. 10. 7. 1273 1211 1114 1250
(底漆層之塗布） 使用由丙歸〜『、卜 r ία. 4- n ea / 、 釋，、聚合物（Sumitomo Nobrene W151 (住友化學αυ製）所製膜之厚度斷m之聚丙烯系樹脂 原片膜卷’對此原片膜之表面連續地以累計照射量2訓· min/m2的條件進行電暈放電處理。再者，在此原片膜表面 將上述製作的底漆層用PM水溶液以微凹版方式進行連續 塗布而得到附有底漆層之基礎薄膜。測定塗布前之基礎薄 膜厚度、及塗布後之附有底漆層之基礎薄膜厚度時，塗布 前為100. 0至100. 3# m，但塗布後變成為丨〇〇 1至1〇〇. 5 19 321307 201005335 左右，而得知底漆層為〇.丨至〇. 5ym左右之厚度。 . (偏光鏡用PVA水溶液之塗布） 在上述所得之附有底漆層之基礎薄膜的底漆層上，將 4種上述製作之偏光鏡用pvA水溶液，以令乾燥後之厚度 成為15#m之方式使用模具塗布法進行連續塗布，而得ς 附有聚乙烯醇樹脂層之聚丙烯樹脂原片膜卷（4種）。 (延伸） 將所得之4種附有聚乙烯醇樹脂層之聚丙烯系樹脂卷 在餘熱13FC、延伸121。(：之條件下，以拉幅方式連續地以❹ 表2所示之預定倍率進行固定端橫向單轴延伸，得到在寬 方向配向之薄膜。如表2所示，關於pvai 17jj及PVA124， 因改變延伸倍率並進行複數之實驗，故在此得到合計10種 之薄膜。 (染色） 將所得10種之薄膜分別使用以下之手法進行染色處 理。 (1) 使薄膜在60°C溫水中以滞留時間9〇秒浸潰並使膨潤。❹ (2) 其··人，在下述組成之碘/蛾化鉀水溶液（28。〇）中以滞 留時間300秒浸潰’使碘被聚乙烯醇所吸附。 (碟/破化鉀水溶液之組成） 水 碘 破化鉀 100重量份 0· 6重量份 5重量份 再者，在下述組成之硼酸/碘化鉀水溶液（76Ό)中以 321307 20 201005335 滯留時間600秒浸潰並使聚乙烯醇交聯。 (硼酸/蛾化鉀水溶液之組成） 水 100 重量份 棚酸 15 重量份 蛾化鉀 9 重量份 (4) 在6°C之冷水中以滯留時間2秒浸潰，將薄膜表面之剩 餘藥劑洗去。 (5) 在50°C之乾燥爐中以滯留時間300秒鐘乾燥。 ® (評估試驗） 對於上述所得之實施例1至7、比較例1至3的偏光 片卷，使用紫外線可見分光光度計V-7100(日本分光（股） 製）測定偏光度（Py)及單體透過率（Ty)。此外，實施例1至 7、比較例1至3之偏光片卷中之基礎薄膜的Δη，係使偏 光鏡在80°C之熱水中膨潤並剝離後，以位相差測定裝置 K0BRA-WPR(王子計測機器（股）製）測定。 21 321307 201005335 [表2] \ PVA種類 延伸倍率 (倍） 厚度 (^ m) Py (%) Ty (%) 基礎薄膜 之△ η 實施例1 PVA117H 5. 5 23 99. 991 38. 9 0. 022 實施例2 PVA117H 5. 9 22 99. 854 41.2 0. 018 實施例3 PVA117H 6. 1 22 99. 988 38. 5 0. 031 實施例4 PVA117H 6. 4 22 99.989 38. 7 0. 026 實施例5 PVA117 5. 5 22 99. 852 39. 0 0. 019 實施例6 PVA124 5. 5 23 99. 992 39. 2 0. 035 實施例7 VF-PS#7500 5. 5 22 99. 990 38. 0 0. 030 比較例1 PVA117H 2. 0 75 41. 225 50. 1 0. 009 比較例2 PVA117H 1.5 90 21. 200 80. 2 0. 005 比較例3 PVA124 2. 0 78 25. 504 82. 1 0. 007 從實施例1所得之偏光片卷，使偏光鏡在80°C之熱水 中膨潤並剝離後，測定基礎薄膜之厚度時，為20//Π1。因 此，可預測偏光鏡之厚度為3/zm之厚度，而得知與延伸前 之比率為幾乎相同。 (延伸前）基礎薄膜厚度/偏光鏡厚度= 100/15 = 6. 67 (延伸後）基礎薄膜厚度/偏光鏡厚度= 20/3= 6. 67 <比較例4> 與實施例1相同地對於聚丙烯系樹脂原片膜卷之表面 進行電暈放電處理，之後，除了不進行底漆層之形成即塗 布偏光鏡用PVA水溶液之外，其餘與實施例1相同地製作 偏光片卷，但由於無底漆層，故染色時偏光鏡會從基礎薄 膜剝離，而無法得到偏光片。 22 321307 201005335 此次所揭示的實施形態及實施例全部皆為例示，應認 為並非具限制性者。本發明之範圍並非僅如上述之說明， 尚包含如申請專利範圍所示之與申請專利範圍均等之意義 及範圍内全部之變更的意圖。 【圖式簡單說明】 第1圖（a)係表示本發明的較佳之一例之偏光片卷1的 示意斜視圖。第1圖（b)係表示從第1圖（a)所示之偏光片 卷1進行切片而成的本發明之偏光片（偏光片小片）11之示 ® 意分解斜視圖。 【主要元件符號說明】 1 偏光片卷 11 偏光片 12 基礎薄膜 13 偏光鏡 14 底漆層 A 偏光片卷之流動方向 B 吸收軸 〇 23 321307(Coating of the primer layer) A polypropylene system having a thickness of m) of a film made of propylene, s, y, y, y, y, y, and polymer (Sumitomo Nobrene W151 (manufactured by Sumitomo Chemical Co., Ltd.) is used. The original film roll of the resin is subjected to corona discharge treatment continuously on the surface of the original film with a cumulative irradiation amount of 2 min·m 2 . Further, the primer layer prepared as described above is used for the surface of the original film.至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至至100. 3# m, but after coating, it becomes 丨〇〇1 to 1〇〇. 5 19 321307 201005335, and it is known that the primer layer is 〇.丨 to 〇. 5ym thickness. (PVA for polarizer) Coating of the aqueous solution) On the primer layer of the base film with the primer layer obtained above, four kinds of polarizing lenses prepared above were used in a pvA aqueous solution, and the thickness of the dried layer was 15#m. Continuous coating, and obtained polypropylene with a polyvinyl alcohol resin layer The olefin resin original film roll (four types). (Extension) The obtained four types of polypropylene resin with a polyvinyl alcohol resin layer are wound around the residual heat 13FC and extended to 121. The transverse uniaxial stretching of the fixed end is carried out at a predetermined magnification shown in Table 2 to obtain a film which is aligned in the width direction. As shown in Table 2, with respect to pvai 17jj and PVA124, since the stretching ratio is changed and the experiment is performed in plural, A total of 10 kinds of films were obtained. (Staining) The obtained 10 kinds of films were dyed by the following methods: (1) The film was immersed and allowed to swell in a warm water of 60 ° C for 9 sec. (2) The person is immersed in the iodine/potent molybdenum aqueous solution (28 〇) having the following composition for 300 seconds to allow the iodine to be adsorbed by the polyvinyl alcohol. (The composition of the dish/decomposing potassium solution 100 parts by weight of water iodine-destroyed potassium, 0 parts by weight, and 5 parts by weight, and further, the mixture was immersed in a boric acid/potassium iodide aqueous solution (76 Å) having the following composition at a time of 321 307 20 201005335 for a residence time of 600 seconds to crosslink the polyvinyl alcohol. (Composition of boric acid/potassium moth potassium solution) Water 100 15 parts by weight of batanoic acid, 9 parts by weight of potassium mothate (4) Dip in a cold water of 6 ° C for 2 seconds, and wash away the remaining agent on the surface of the film. (5) Drying oven at 50 ° C It was dried in a residence time of 300 seconds. (Evaluation test) For the polarized film rolls of Examples 1 to 7 and Comparative Examples 1 to 3 obtained above, an ultraviolet-visible spectrophotometer V-7100 (Japan Spectrophotometer) was used. Determination of the degree of polarization (Py) and monomer transmittance (Ty). Further, the Δη of the base film in the polarizer rolls of Examples 1 to 7 and Comparative Examples 1 to 3 was such that the polarizer was swollen in hot water at 80 ° C and peeled off, and the phase difference measuring device K0BRA-WPR was used. The prince measures the machine (stock) system. 21 321307 201005335 [Table 2] \ PVA type stretching ratio (times) Thickness (^ m) Py (%) Ty (%) Δ η of the base film Example 1 PVA117H 5. 5 23 99. 991 38. 9 0. 022 Example 2 PVA117H 5. 9 22 99. 854 41.2 0. 018 Example 3 PVA117H 6. 1 22 99. 988 38. 5 0. 031 Example 4 PVA117H 6. 4 22 99.989 38. 7 0. 026 Example 5 PVA117 5. 5 22 99. 852 39. 0 0. 019 Example 6 PVA124 5. 5 23 99. 992 39. 2 0. 035 Example 7 VF-PS#7500 5. 5 22 99. 990 38. 0 0 030 Comparative Example 1 PVA117H 2. 0 75 41. 225 50. 1 0. 009 Comparative Example 2 PVA117H 1.5 90 21. 200 80. 2 0. 005 Comparative Example 3 PVA124 2. 0 78 25. 504 82. 1 0. 007 From the polarizer roll obtained in Example 1, the polarizer was swollen in hot water at 80 ° C and peeled off, and when the thickness of the base film was measured, it was 20 / / Π 1 . Therefore, it is predicted that the thickness of the polarizer is 3/zm, and it is found that the ratio to the pre-extension is almost the same. (Before extension) base film thickness/polarizer thickness = 100/15 = 6.67 (after stretching) base film thickness / polarizer thickness = 20/3 = 6.67 <Comparative Example 4> The surface of the polypropylene resin original film roll was subjected to a corona discharge treatment, and then a polarizer roll was produced in the same manner as in Example 1 except that the PVA aqueous solution for a polarizer was applied without forming a primer layer. Since the primer-free layer is used, the polarizer is peeled off from the base film during dyeing, and the polarizer cannot be obtained. 22 321 307 201005335 All of the embodiments and examples disclosed herein are illustrative and should not be considered as limiting. The scope of the present invention is not intended to be limited by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1(a) is a schematic perspective view showing a polarizer roll 1 of a preferred embodiment of the present invention. Fig. 1(b) is a perspective view showing the polarizer (polarizer piece) 11 of the present invention which is sliced from the polarizer roll 1 shown in Fig. 1(a). [Main component symbol description] 1 Polarizer roll 11 Polarizer 12 Base film 13 Polarizer 14 Primer layer A Flow direction of polarizer roll B Absorption axis 〇 23 321307