V V200418637 (1) 玖、發明說明 【發明所屬之技術領域】 本發明係有關，由吸收型偏光膜與反射型偏光膜層合 而成’具有防靜電機能之層合偏光膜；更是有關，使用其 所成之偏光光源裝置、及液晶顯示裝置。 【先前技術】 在液晶威不裝置的製造步驟中》剝離偏光膜的保護膜 時’會產生靜電，而引起異物缺點；而且液晶顯示裝置使 用於行動電話等時，爲要除去其上所沾之污物，多以布在 顯示畫面上擦試，此際會產生靜電，使顯示變得雜亂；又 ’近年來以橫向電場型液晶元件，做爲廣視角液晶顯示裝 置（請參照特開平6- 160878號公報、USP5, 598，285) ’此橫向電場型液晶元件靜電較弱，在液晶顯示裝置之裝 配步驟中，將偏光膜貼合於液晶元件後，剝離保護膜時， 有因剝離靜電而引起顯示紊亂的問題。 此等因靜電而產生的不良情況之解決方法，有以在纖 維素系樹脂基板上，塗佈防靜電劑的方法；其應用例有， 將防靜電劑塗佈於纖維素系樹脂板，在偏光鏡上層合而成 偏光板（吸收型偏光膜）之方法（請參照特開平11-9 1 0 3 8號公報）。 可是，近年來在液晶顯示裝置上，廣泛採用能提高亮 度的反射型偏光膜系統〔請參照特表平9- 5 1 1 844號公報 (WO- 95/279 1 9 )〕，反射型偏光膜是，可使某種偏光的 (2) (2)200418637 光線通過，而將具有與其相反性質之偏光光線反射者；以 此反射型偏光膜所反射的光線，再利用於光源裝置，可提 高光的利用率，可用以提升顯示的亮度；反射型偏光膜極 少單獨使用，多以與吸收型偏光膜層合之狀態使用爲主； 本說明稱呼該吸收型偏光膜、與反射型偏光膜之層合物爲 層合偏光膜；廣泛採用此層合偏光膜，成爲解決上述因靜 電而產生的不良情況之必要對策。 授予層合偏光膜防靜電機能的方法中，其使用的吸收 型偏光膜，在特開平1 1 - 9 1 03 8號公報上有如下之記載， 使用吸收型偏光膜單獨與反射型偏光膜層合時，會發生新 的不良情況；層合偏光膜，是以其吸收型偏光膜，面對液 晶元件、與液晶元件貼合；構成層合偏光膜時，使脫模膜 剝離之際，在吸收型偏光膜外側會發生靜電的面上，塗佈 防靜電劑的情形下（也就是說，與液晶元件貼合時，防靜 電劑層介入於吸收型偏光膜與液晶元件之間），顯示上會 發生光點等之缺點，此爲僅僅使用吸收型偏光膜時之問題 所在；使用與反射型偏光膜層合而成之層合偏光膜時，爲 提高亮度而使用的防靜電劑層，能使偏光擾亂的性質消失 〇 也就是說，在層合偏光膜中授予防靜電機能，僅僅使 用將防靜電劑塗佈於纖維素系樹脂板而成之吸收型偏光膜 是不充分的。 (3) (3)200418637 〔發明之揭示〕 本發明之目的係，提供一種將其保護膜剝離而貼合於 液晶元件時，也極少產生靜電，又在顯示上不發生光點等 之缺點，而且具有防靜電機能的層合偏光膜。 本發明的第一個目的是，提供一種層合偏光膜，其特 徵爲由反射型偏光膜、與吸收型偏光膜層合而成；在反射 型偏光膜的外側（即吸收型偏光膜的相反側）、或反射型 偏光膜與吸收型偏光膜之間，至少一處層合有防靜電層； 防靜電層，可直接在反射型偏光膜或吸收型偏光膜上形成 ，即是說，將防靜電劑塗佈於薄膜上形成塗膜亦可；又， 防靜電層，其硬度在鉛筆硬度F以上，即形成所謂硬塗層 亦可；又，防靜電層爲具有黏著性之感壓型亦可；本發明 之層合偏光膜中，更可用光學補助膜層合；防靜電層層合 於反射型偏光膜之外側、或反射型偏光膜與吸收型偏光膜 之間的至少一處，或兩處都有也可以；吸收型偏光膜之外 側，即是反射型偏光膜的相反側，則沒有該防靜電層。 本發明的第二個目的是，提供一種偏光光源裝置，其 係由本發明之特定層合偏光膜、光源部份、以及反射板， 依序配置而成。 本發明的第三個目的是，提供一種液晶顯示裝置，其 係由液晶元件、吸收型偏光膜、以及本發明之特定偏光光 源裝置，依序層合而成；本發明之液晶顯示裝置，其防靜 電效果很大，特別對於使用橫向電場型液晶元件之液晶顯 示裝置，且很高之有用性。 (4) (4)200418637 〔用以實施發明之最佳型態〕 爲明確了解，以圖面來詳細說明本發明。 圖1爲本發明層合偏光膜之基本層構成例的截面圖； 本發明層合偏光膜中，防靜電層之層合位置有所限定；其 一如圖1 ( a )所示，防靜電層（2 3 )置於層合偏光膜（ 1 〇 )之反射型偏光膜（2 1 )的外側（即爲吸收型偏光膜的 相反側）層合而成；也就是說’依吸收型偏光膜（22 )、 反射型偏光膜（2 1 )、防靜電層（23 )的順序層合而成； 其二如圖1 ( b )所示，防靜電層（2 3 )配置於層合偏光 膜（1 〇 )之吸收型偏光膜（2 2 )與反射型偏光膜（2 1 )之 間層合而成；即是，依吸收型偏光膜（22 )、防靜電層（ 23 )、反射型偏光膜（2 1 )之順序層合而成。 又，防靜電層配置於反射型偏光膜之外側、或反射型 偏光膜與吸收型偏光膜之間的至少一處，或兩處都有也可 以；於吸收型偏光膜之外側，即反射型偏光膜的反對側， 則沒有該防靜電層。 防靜電層只限於具有防靜電機能，其構造、型態沒有 特別的限制，眾所周知者均可使用；也就是說，以防靜電 劑爲主成份，因應需求可與其他有機化合物相混合，而形 成防靜電層；也可以使防靜電劑形成薄膜；防靜電層，具 有自我保持性而由本身形成薄膜亦可；不具自我保持性， 而在樹脂薄膜上形成皮膜亦可；於樹脂薄膜上形成時，其 樹脂薄膜’爲本發明之反射型偏光膜、吸收型偏光膜亦佳 (5) (5)200418637 樹脂薄膜的材質，沒有特別的限制，依作業處理性來 考量’以熱可塑性樹脂，爲適用的材質之一；熱可塑性樹 脂沒有特別的限制，可以使用眾所周知的各種樹脂、如聚 乙烯、聚丙烯等之聚烯烴系樹脂、聚苯乙烯系樹脂、聚氯 乙烯系樹脂、聚醋酸乙烯系樹脂、聚對苯二甲酸乙烯酯、 聚萘二甲酸乙烯酯等之聚酯系樹脂、以原菠烷或其誘導體 做爲單體聚合而成之環狀聚烯烴系樹脂、聚碳酸酯系樹脂 、聚碼系樹脂、聚醚碼系樹脂、聚芳基酸酯系樹脂、聚乙 烯醇系樹脂、聚氨基甲酸酯系樹脂、聚丙烯酸酯系樹脂（ 亦稱丙烯酸系樹脂）、聚甲基丙烯酸酯系樹脂（亦稱甲基 丙烯酸系樹脂）等之合成高分子、還有二醋酸纖維素、三 醋酸纖維素、等纖維素系樹脂等之天然高分子；當然可以 使用由合成局分子之一種單體單獨所成的聚合體外，由兩 種或以上構成上述各樹脂的單體所成共聚合體亦可使用； 從本發明層合偏光膜使用目的之一的液晶顯示裝置之編排 來考量，樹脂薄膜以無色透明爲佳，爲裝飾性之目的也可 能使用有色者。 防靜電劑，可以使用眾所周知的化合物等，如有機系 化合物之醯氧基隨胺基丙基一甲基經基乙基鏡硝酸鹽、醯 氧基醯胺基丙基三甲基銨硫酸鹽、十六烷基嗎啉甲氧硫酸 鹽、單長鏈烷基三甲基銨鹽、二長鏈烷基二甲基鏡鹽、三 長鏈烷基甲基銨鹽、單醯氧基醯胺基烷基三甲基銨鹽、三 院基-2-羥基乙基錢鹽等之陽離子系界面活性劑；直鏈 -10- (6) (6)200418637 烷基磷酸鉀鹽、聚環氧乙烷烷基磷酸鉀鹽、烷烴磺酸鹽、 脂肪酸鈉、烷基磺酸鈉、^ -烯烴磺酸鈉、單烷基磷酸酯 納、局級醇硫酸醋納等之陰離子系界面活性劑，N ^ N _ 雙（羥基乙基）· N-烷基胺、其脂肪酸酯誘導體、多價 醇脂肪酸部份酯類、烷基氨基羧酸鹽、羧基三甲銨基乙內 鹽、烷基三甲銨基乙內鹽、磺基三甲銨基乙內鹽、磷三甲 銨基乙內鹽等之非離子系界面活性劑等等；又，無機系化 合物有，氧化錫、氧化鈦、銻錫複合氧化物（ΑΤΟ )、銦 錫複合氧化物（ΙΤΟ )、銦鋅複合氧化物（ΙΖΟ )等之導 電性金屬氧化物等等。 此等防靜電劑塗佈於樹脂薄膜上時，因應需求以使用 低、中分子量之有機化合物做爲黏著成份爲佳；做爲黏著 成份的低、中分子量有機化合物，可以使用沒有特別限制 的眾所周知者；其中，以低、中分子量之聚乙二醇、聚丙 二醇、甘油、季戊四醇等之多價醇，及其醚類、酯類較爲 適宜。 又，防靜電劑分散於熱可塑性樹脂、或熱硬化性樹脂 、或光硬化性樹脂中，形成防靜電劑之膜體狀均佳；此處 對可使用的熱可塑性樹脂，沒有特別的限制，可以使用上 述所列舉樹脂薄膜的材質；此等熱可塑性樹脂中，防靜電 劑之分散，可用混練等眾所周知的方法進行。 防靜電層中可以使用的熱硬化性樹脂，沒有特別的限 制，可以使用眾所周知的各種樹脂，如環氧系樹脂、酣系 樹脂、三聚氰胺樹脂、醇酸樹脂、尿素系樹脂等等；此等 -11 - (7) (7)200418637 熱硬化性樹脂中’防靜電劑之分散，可將防靜電劑分散於 熱硬化性樹脂之液狀原料組成物中，再以眾所周知的熱硬 化處理方法進行。 防靜電層中’可以使用的光硬化性樹脂，沒有特別的 限制’可以使用眾所周知的各種樹脂，如聚丙烯酸酯系樹 脂、聚甲基丙烯酸酯系樹脂等等；此等光硬化樹脂中，防 靜電劑之分散’可將防靜電劑分散於光硬化性樹脂之液狀 原料組成物中’再以眾所周知的光硬化處理方法進行。 防靜電劑中使用金屬氧化物時，可用蒸著法、噴鍍法 等眾所周知的方法，在樹脂薄膜上形成防靜電層使用；樹 脂薄膜可以使用上述的熱可塑性樹脂；而且，可在反射型 偏光膜、吸收型偏光膜上，直接形成防靜電層。 防靜電層之防靜電機能的基準，可以表面固有電阻來 表示；爲適用於本發明，以1 X 1 〇 13 Ω / □以下爲必要，以 ΙχΙΟ^Ω/□以下爲佳，最好爲1χ1〇1()Ω/□以下；又， 表面固有電阻，通常都在0Ω/□以上。 防靜電層具有充分硬度時，其露出之最表面，有做爲 層合偏光膜之保護層的機能；也就是，依據ns Κ- 5 600-5- 4之標準，在荷重5 00公克下之鉛筆硬度在F以上，更 佳的在Η以上時，在防靜電層中，可授予做爲表面保護 層的機能。 另一方面，防靜電層分散於樹脂中時，可授予樹脂之 黏著性；也就是，授予防靜電層黏著性時，層合於構成層 合偏光膜之膜間，可做爲黏著劑層使用；黏著性爲感壓黏 -12- (8)V V200418637 (1) 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a laminated polarizing film having an antistatic function formed by laminating an absorptive polarizing film and a reflective polarizing film; more particularly, A polarized light source device and a liquid crystal display device are used. [Prior art] In the manufacturing steps of liquid crystal devices, "When the protective film of the polarizing film is peeled off, static electricity is generated, which causes the defect of foreign objects; and when the liquid crystal display device is used in a mobile phone, etc., it is necessary to remove it. Dirt is often rubbed on the display screen with a cloth. At this time, static electricity will be generated and the display will become cluttered. In recent years, a lateral electric field type liquid crystal element has been used as a wide viewing angle liquid crystal display device (see JP-A-6-160878). (Gazette No., USP5, 598, 285) 'This transverse electric field type liquid crystal element is weak in static electricity. In the process of assembling a liquid crystal display device, after the polarizing film is attached to the liquid crystal element, the protective film is peeled off due to static electricity. Show disordered problems. The solution to these problems caused by static electricity is to apply an antistatic agent to a cellulose resin substrate. An example of its application is to apply an antistatic agent to a cellulose resin board. A method of forming a polarizing plate (absorptive polarizing film) by laminating polarizers (see Japanese Patent Application Laid-Open No. 11-9 1 0 3 8). However, in recent years, a reflective polarizing film system capable of improving brightness has been widely used in liquid crystal display devices (refer to Japanese Patent Publication No. 9-5 1 1 844 (WO-95 / 279 1 9)), and reflective polarizing films are widely used. Yes, (2) (2) 200418637 light of a certain type of polarized light can be passed, and polarized light having the opposite property can be reflected; light reflected by this reflective polarizing film can be reused in a light source device to improve light The utilization ratio can be used to improve the brightness of the display; reflective polarizing films are rarely used alone, and are mostly used in the state of being laminated with an absorptive polarizing film; this description refers to the layer of the absorptive polarizing film and the reflective polarizing film The compound is a laminated polarizing film; this laminated polarizing film is widely used as a necessary countermeasure for solving the above-mentioned problems caused by static electricity. In the method for granting the antistatic function of a laminated polarizing film, the absorption type polarizing film used in the method is described in JP-A No. 1 1-9 1 03 8 as follows. The absorption type polarizing film is used separately from the reflective type polarizing film layer. New problems will occur when they are combined. Laminated polarizing film is an absorption type polarizing film that faces the liquid crystal element and is bonded to the liquid crystal element. When the laminated polarizing film is formed, the release film is peeled off. On the surface where static electricity is generated on the outside of the absorption-type polarizing film, when an antistatic agent is applied (that is, when bonding to a liquid crystal element, the antistatic agent layer is interposed between the absorption-type polarizing film and the liquid crystal element), and the display There are disadvantages such as light spots, which is a problem when only using an absorption type polarizing film; when using a laminated polarizing film laminated with a reflective type polarizing film, an antistatic agent layer used to improve brightness, The property of disturbing polarized light disappears. That is to say, it is not sufficient to use only an absorption-type polarizing film obtained by applying an antistatic agent to a cellulose-based resin plate to impart an antistatic function to a laminated polarizing film. (3) (3) 200418637 [Disclosure of the invention] The object of the present invention is to provide the disadvantages that static electricity is rarely generated when the protective film is peeled off and attached to a liquid crystal element, and light spots do not occur on the display. In addition, a laminated polarizing film having an antistatic function. A first object of the present invention is to provide a laminated polarizing film, which is characterized in that a reflective polarizing film is laminated with an absorptive polarizing film; on the outside of the reflective polarizing film (that is, the opposite of the absorptive polarizing film) Side), or between the reflective polarizing film and the absorbing polarizing film, at least one layer is laminated with an antistatic layer; the antistatic layer can be formed directly on the reflective polarizing film or the absorbing polarizing film, that is, the An antistatic agent may be applied to the film to form a coating film. Also, the antistatic layer may have a hardness above the pencil hardness F, that is, a so-called hard coat layer may be formed. In addition, the antistatic layer is pressure-sensitive with adhesiveness. Also, the laminated polarizing film of the present invention can be laminated with an optical auxiliary film; the antistatic layer is laminated on at least one side of the reflective polarizing film or between the reflective polarizing film and the absorbing polarizing film, It is also possible to have both. The outer side of the absorptive polarizing film, that is, the opposite side of the reflective polarizing film, does not have the antistatic layer. A second object of the present invention is to provide a polarized light source device, which is formed by sequentially stacking the specific laminated polarizing film, light source portion, and reflective plate of the present invention. A third object of the present invention is to provide a liquid crystal display device, which is formed by sequentially laminating a liquid crystal element, an absorption-type polarizing film, and the specific polarized light source device of the present invention; the liquid crystal display device of the present invention, The antistatic effect is great, and it is particularly useful for a liquid crystal display device using a lateral electric field type liquid crystal element. (4) (4) 200418637 [The best mode for implementing the invention] To clearly understand, the present invention will be described in detail with reference to the drawings. Fig. 1 is a cross-sectional view of an example of a basic layer constitution of a laminated polarizing film of the present invention; the laminated position of the antistatic layer in the laminated polarizing film of the present invention is limited; one is shown in Fig. 1 (a), the antistatic The layer (2 3) is laminated on the outer side of the reflective polarizing film (2 1) of the laminated polarizing film (10) (that is, the opposite side of the absorptive polarizing film); The film (22), the reflective polarizing film (2 1), and the antistatic layer (23) are laminated in this order. Second, as shown in FIG. 1 (b), the antistatic layer (2 3) is arranged in the laminated polarized light. The absorptive polarizing film (2 2) of the film (10) and the reflective polarizing film (2 1) are laminated; that is, according to the absorptive polarizing film (22), the antistatic layer (23), and the reflection The polarizing film (2 1) is sequentially laminated. The antistatic layer may be disposed on the outer side of the reflective polarizing film or at least one or both of the reflective polarizing film and the absorptive polarizing film. The antistatic layer may be on the outer side of the absorptive polarizing film, that is, the reflective type. The opposite side of the polarizing film does not have the antistatic layer. The anti-static layer is limited to having anti-static function, and its structure and shape are not particularly limited. It can be used by well-known people; that is, the anti-static agent is used as the main component, and it can be mixed with other organic compounds to meet the requirements and formed. Antistatic layer; it is also possible to form antistatic agent into a thin film; antistatic layer may be self-retaining and form a thin film by itself; without self-retaining, a film may be formed on a resin film; when formed on a resin film The resin film is the reflective polarizing film and the absorbing polarizing film of the present invention. (5) (5) 200418637 The material of the resin film is not particularly limited. It is considered in terms of workability. “Thermoplastic resin is One of the applicable materials; thermoplastic resin is not particularly limited, and various well-known resins such as polyolefin resins such as polyethylene and polypropylene, polystyrene resins, polyvinyl chloride resins, and polyvinyl acetate resins can be used. Polyester resins such as resin, polyethylene terephthalate, and polyvinyl naphthalate, orthospinane or its inducer Cyclic polyolefin resin, polycarbonate resin, polycode resin, polyether code resin, polyarylate resin, polyvinyl alcohol resin, polyurethane resin , Synthetic polymers such as polyacrylate resin (also known as acrylic resin), polymethacrylate resin (also known as methacrylic resin), cellulose diacetate, cellulose triacetate, and other fibers Natural polymers such as plain resins; of course, it is possible to use a polymer made of a single monomer of a synthetic molecule alone, or a copolymer made of two or more monomers constituting each of the above resins; also from the present invention The laminated polarizing film is considered for the arrangement of the liquid crystal display device, which is one of the purposes. The resin film is preferably colorless and transparent, and it is also possible to use colored people for decorative purposes. As the antistatic agent, well-known compounds can be used, such as the fluorenyloxy group of the organic compound with aminopropylmonomethyl via ethylethyl nitrate, fluorenylaminoaminopropyltrimethylammonium sulfate, Hexadecylmorpholine methoxysulfate, mono-long-chain alkyl trimethyl ammonium salt, di-long-chain alkyl dimethyl mirror salt, tri-long-chain alkyl methyl ammonium salt, mono-fluorenyl ammonium group Cationic surfactants such as alkyltrimethylammonium salt, sankenyl-2-hydroxyethyl money salt; linear -10- (6) (6) 200418637 potassium alkyl phosphate, polyethylene oxide Anionic surfactants such as potassium alkyl phosphate, alkane sulfonate, sodium fatty acid, sodium alkyl sulfonate, sodium olefin sulfonate, sodium monoalkyl phosphate, sodium alcohol sulfate acetate, etc., N ^ N _ bis (hydroxyethyl) · N-alkylamines, fatty acid ester inducers, polyvalent fatty acid partial esters, alkylaminocarboxylates, carboxytrimethylammonium betaines, alkyltrimethylammonium Non-ionic surfactants such as ethyl betaine, sulfotrimethylammonium betaine, phosphotrimethylammonium betaine, etc .; In addition, inorganic compounds include, Tin, titanium, antimony-tin composite oxide (ΑΤΟ), indium-tin composite oxide (ΙΤΟ), indium-zinc composite oxide (ΙΖΟ), etc. conductive metal oxides and the like. When these antistatic agents are coated on resin films, it is better to use low- and medium-molecular-weight organic compounds as adhesive components according to demand; as low- and medium-molecular-weight organic compounds as adhesive components, well-known non-limiting uses can be used Among them, low- and medium-molecular-weight polyethylene glycols, polypropylene glycols, glycerol, pentaerythritol, and the like, and their ethers and esters are more suitable. In addition, the antistatic agent is dispersed in a thermoplastic resin, a thermosetting resin, or a photocurable resin, and the film form of the antistatic agent is good. There is no particular limitation on the thermoplastic resin that can be used here. The materials of the resin films listed above can be used; in these thermoplastic resins, the dispersion of the antistatic agent can be performed by well-known methods such as kneading. The thermosetting resin that can be used in the antistatic layer is not particularly limited, and various well-known resins such as epoxy-based resin, fluorene-based resin, melamine resin, alkyd resin, urea-based resin, etc. can be used; 11-(7) (7) 200418637 The antistatic agent is dispersed in the thermosetting resin. The antistatic agent can be dispersed in the liquid raw material composition of the thermosetting resin and then subjected to a well-known thermosetting treatment method. In the antistatic layer, 'the photocurable resin which can be used is not particularly limited', various well-known resins such as polyacrylate resin, polymethacrylate resin, etc. can be used; among these photocurable resins, The dispersing of the electrostatic agent can be performed by dispersing the antistatic agent in the liquid raw material composition of the photocurable resin by a well-known photohardening treatment method. When a metal oxide is used as an antistatic agent, an antistatic layer can be formed on a resin film by a well-known method such as a vapor deposition method or a spray coating method; the above-mentioned thermoplastic resin can be used as the resin film; and reflective polarized light can be used. An antistatic layer is directly formed on the film and the absorption-type polarizing film. The reference of the antistatic function of the antistatic layer can be expressed by the inherent resistance of the surface. For the application of the present invention, 1 X 1 〇13 Ω / □ or less is necessary, and ΙχΙΟ ^ Ω / □ is the most preferable, and 1χ1 is the most preferable. 〇1 () Ω / □ or less; In addition, the surface specific resistance is usually above 0Ω / □. When the anti-static layer has sufficient hardness, the exposed surface of the anti-static layer functions as a protective layer for laminating a polarizing film; that is, according to the standard of ns KK-5600-5-4, under a load of 500 g When the pencil hardness is above F, and more preferably above Η, the antistatic layer can be used as a surface protection layer. On the other hand, when the antistatic layer is dispersed in the resin, the adhesiveness of the resin can be imparted; that is, when the antistatic layer is imparted with adhesiveness, it can be laminated between the films constituting the laminated polarizing film and used as an adhesive layer. ; Adhesiveness is pressure sensitive -12- (8)
V (8) V200418637 著性亦佳；感壓黏著性，就粘著性而言，表示其黏著性可 再剝離。 本發明中使用之反射型偏光膜，可透過某種之偏光光 線’而將具與其不同性質之偏光光線反射；反射型偏光膜 之中有’對直線偏光具有偏光分離機能之反射型直線偏光 膜’與對圓偏光具有偏光分離機能之反射型圓偏光膜。 反射型直線偏光膜，可透過特定振動方向的直線偏光 ’而將與其成直交振動方向的直線偏光反射；反射型直線 偏光膜之偏光透過軸是，特定振動方向的直線偏光由此偏 光膜之垂直方向射入時，爲最大透過率之方向；偏光反射 軸，則爲與其直交之方向。 另一方面，反射型圓偏光膜，可透過某種旋轉方向的 圓偏光，而將與其相反向旋轉的圓偏光反射； 本發明中使用反射型圓偏光膜時，以1/4波長相位差 膜層合，透過光線由圓偏光變換成直線偏光，而達吸收型 偏光膜爲佳。 反射型直線偏光膜，如以布留斯特角（B r e w s t e r ’ s Angle )，利用偏光成份反射率之差而成的反射型偏光膜 (如特表平6- 508449號公報上之記載），以微細金屬線 狀圖案施工的反射型偏光膜（如特開平2- 308 1 06號公報 上記載），使用至少二種之高分子膜層合，依折射率各向 異性，利用反射率之各向異性而成的反射型偏光膜（如特 表平9- 5 068 3 7號公報上記載；市售品中有，3M社製之 商品名「DBEF」）、高分子薄膜中，由至少二種之高分 200418637 Ο) 子所形成，且具有海島構造，依折射率各向異性，利用反 射率之各向異性而成的反射型偏光膜（如美國專利第5， 82 5，543號說明書上記載；市售品中有，3M社製之商品 名「DRPF」）、將粒子分散於高分子膜中，依折射率各 向異性，利用反射率之各向異性而成的反射型偏光膜（如 特表平1 1 - 5 090 1 4號公報上記載）、將無機粒子分散於 高分子膜中，依粒子尺寸之散射能差爲基礎，利用反射率 之各向異性而成的反射型偏光膜（如特開9 - 2 9 7 2 04號公 報上記載），等等。 另一方面，反射型圓偏光膜，如利用膽甾醇液晶之選 擇反射性而成的反射型偏光膜（如特開平3 - 45 906號公 報上記載；市售品中有，默克社製商品名「Transmax®」 、日東電工製商品名「日胞®」）等等。 反射型偏光膜之厚度，沒有特別的限制，在液晶顯示 元件等之中使用本發明之層合偏光膜時，反射型偏光膜以 較薄者爲佳；具體的說以1公厘以下爲宜，以0.2公厘以 下較爲適合；其中以，由至少二種之高分子膜層合，依折 射率各向異性，利用反射率之各向異性而成的反射型偏光 膜、與在高分子薄膜中由至少二種之高分子所形成且具海 島構造，依折射率各向異性，利用反射率之各向異性而成 的反射型偏光膜、及利用膽甾醇液晶之選擇反射性而成的 反射型圓偏光膜，特別適用於本發明厚度較薄的層合偏光 膜。 本發明中使用之吸收型偏光膜，可透過特定振動方向 -14- 200418637 (ίο) 的直線偏光，而將與其成直交方向的直線偏光吸收 型偏光膜之偏光透過軸是，特定振動方向的直線偏 偏光膜之垂直方向射入時，爲最大透過率之方向。 此種吸收型偏光膜，可以使用眾所周知的碘系 、染料系偏先膜，碘:系偏光膜是，以在延伸後之聚 薄膜中將做爲二色性色素的碘配位化合物吸著所成 爲基材的薄膜；染料系偏光膜是，以在延伸後之聚 薄膜中，將做爲二色性色素的二色性染料吸著所成 爲基材的薄膜；此等吸收型偏光膜，爲提升其耐久 在其單面或雙面用樹脂薄膜被覆著較佳；以保護爲 被覆樹脂，可以使用二醋酸纖維素、三醋酸纖維素 苯二甲酸乙烯酯、環狀烯烴系樹脂等等。 吸收型偏光膜之厚度，沒有特別之限制，在液 元件等之中，使用本發明之層合偏光膜時，吸收型 以較薄者爲佳；具體的說以1公厘以下爲宜，以0 以下較爲適合。 本發明之層合偏光膜，在任何位置配置光學補 合都可以；光學補助膜是，在液晶顯示裝置中，爲 或擴大視角等提高畫質所使用的薄膜；可使用如聚 系樹脂、環狀聚烯烴系樹脂、聚碼系樹脂、聚芳基 樹脂、或二醋酸纖維素、三醋酸纖維素等之纖維素 經單軸或雙軸延伸所成相位差薄膜（如住友化學工 品名「施敏卡®」）、在三醋酸纖維素上以液晶性 配向所成相位差薄膜（如富士照相軟片製商品名「 :吸收 光由此 偏光膜 乙烯醇 偏光鏡 乙烯醇 偏子鏡 性，以 目的之 、聚對 晶顯示 偏光膜 .2公厘 助膜層 色修正 碳酸酯 酸酯系 系樹脂 業製商 化合物 WV薄 (11) (11)200418637 膜」、新日本石油製商品名「LCD薄膜」、「NH薄膜」 等等；又，此等光學補助薄膜，通常層合於吸收型偏光膜 之外側，爲改善反射型偏光膜之特性，也可以在反射型偏 光膜之外側、或反射型偏光膜與吸收型偏光膜之間層合。 本發明之層合偏光膜，在任何位置配置擴散層層合都 可以；擴散層是，層內部持有折射率不均勻的構造，因而 具有使光線散亂的特性之層；擴散層中可以使用眾所周知 的物質，如在熱可塑性樹脂、熱硬化性樹脂、光硬化性樹 脂之任何一種中，將粒子分散而成者，在感壓黏著劑中將 粒子分散而成者等等；其他的例子有，以兩種以上不同折 射率的光硬化性化合物、或熱硬化性化合物所形成之折射 率調製型光散射薄膜等等。 構成本發明之層合偏光膜的薄膜及各層，在層合整體 化之際，因應需求使用之黏著劑，以密著層合爲佳；例如 防靜電層（2 3 )爲具有自我保持性之薄膜狀時，如圖2之 (a)或（b)中截面圖所示，構成之薄膜及層，使用黏著 劑（24 )，以密著層合較適宜；防靜電層（23 )直接在反 射型偏光膜（2 1 )或吸收型偏光膜上形成時，如圖3之（ a) 〜（c)中截面圖所示，構成薄膜及層之間，因應需 求使用黏著劑（24 )，以密著層合爲佳。 黏著劑，爲無色透明時，沒有特別的限制，可以使用 乙烯/醋酸乙烯的共聚合體等之熱熔黏著劑、聚乙烯醇系 樹脂溶解於水中所成之水系黏著劑、聚丙烯酸酯系樹脂、 聚酯系樹脂溶解於溶劑中所成之溶劑系黏著劑、以具有丙 -16- (12) (12)200418637 烯醯基化合物爲主成份之光硬化型黏著劑、以環氧化合物 與胺等之硬化反應所成之二液反應型黏著劑、氰基丙_酸 酯等之濕氣硬化型黏著劑等等。 又，感壓黏著劑爲適用的黏著劑之一；感壓黏著齊[|是 ，僅僅用力押下即可黏著於其他物質之表面，此感壓黏著 劑，自被黏著面剝離時，被黏著面之強度足夠的話，幾乎 完全不留痕跡，爲可除去之粘彈性體，亦稱爲粘著劑；感 壓粘著劑，可以使用丙烯酸系感壓黏著劑、氯乙烯系感壓 黏著劑、合成橡膠系感壓黏著劑、天然橡膠系感壓黏著劑 、矽氧系感壓黏著劑等等。 此等黏著劑之中，丙烯酸系感壓黏著劑，爲作業處理 性及耐久性較適用的黏著劑之一；丙烯酸系感壓黏著劑是 ，以授與黏著性、低玻璃轉移溫度之主要單體成份、和授 與黏著性、凝集力，高玻璃轉移溫度之共聚用單體成份、 及含有架橋、黏著性改良等官能基之單體成份爲主的共聚 合體所成；主要單體成份，可以使用丙烯酸乙酯、丙烯酸 丁酯、丙烯酸戊酯、丙烯酸2-乙基己酯、丙烯酸辛酯、 丙烯酸環己酯、丙烯酸苯甲酯等之丙烯酸烷基酯；甲基丙 烯酸丁酯、甲基丙烯酸戊酯、甲基丙烯酸2-乙基己酯、 甲基丙烯酸辛酯、甲基丙烯酸環己酯、甲基丙烯酸苯甲酯 等之甲基丙烯酸烷基酯等等；共聚用單體成份，可以使用 丙烯酸甲醋、甲基丙條酸甲酯、甲基丙燒酸乙酯、醋酸乙 烯酯、苯乙烯、丙烯腈等等；含官能基之單體成份’可以 使用丙烯酸、甲基丙烯酸、馬來酸、衣康酸等之含羧基單 -17- (13) (13)200418637 體、2-羥基乙基甲基丙烯酸酯、2-羥基丙基甲基丙烯酸 酯、N-甲醇基丙烯酸醯胺等之含羥基單體、丙烯酸醯胺 、甲基丙烯酸醯胺、縮水甘油甲基丙烯酸酯等等。 感壓黏著劑，使用架橋型者較爲適合；以添加環氧系 化合物、異氰酸酯系化合物、金屬螯合形化合物、金屬烷 氧化物、金屬鹽、胺化合物、聯氨化合物、醛系化合物等 各種架橋劑，而架橋之方法；以放射線照射而架橋的方法 ，都可以適用；此等應依官能基之種類，做適當選擇；構 成感壓黏著劑之主要聚合體的重量平均分子量，以60萬 〜2 00萬爲宜’以80萬〜180萬爲佳；重量平均分子量 低於60萬時，後述可塑劑之添加量太多的話，會使感壓 黏著劑對被黏著物的密著性及耐久性降低，又，重量平均 分子量超過200萬，特別是在可塑劑之添加量太少時，感 壓黏著劑之彈性增高，而柔軟性下降，被黏著物生成收縮 應力，對其不能產生吸收及緩和的作用。 感壓黏著劑，以可塑劑合使用爲宜；可塑劑，可以使 用苯二甲酸酯、偏苯三酸酯、均苯四甲酸酯、己二酸酯、 癸二酸酯、磷酸三酯、二醇酯等之酯類；操作油劑、液狀 聚醚、液狀聚萜烴，其他液狀樹脂等等，此等可單獨或兩 種以上混合使用；感壓黏著劑中，因應需求可以添加紫外 線吸收劑、光安定劑、氧化防止劑等之添加劑。 本發明之層合偏光膜，以其吸收型偏光膜側做爲射出 光面，可製成偏光光源裝置；在此偏光光源裝置之吸收型 偏光膜側，配置顯示用液晶元件，可製成液晶顯示裝置； -18- (14) (14)200418637 此等偏光光源裝置及液晶顯示裝置，以圖4及圖5之截面 圖例說明如下。 在圖4及圖5所示之例中，與圖1(&)所示相同， 依吸收型偏光膜（22 )、防靜電層（23 )、反射型偏光膜 (2 1 )之順序層合而成層合偏光膜（丨〇 );其反射型偏光 膜（2 1 )側’配置光源裝置（6丨）或（6 2 )，構成偏光光 源裝置（64)或（65)。 圖4中光源裝置（6〇稱爲側光式，其配備有光源（ 5 1 )、導光板（5 2 )、及導光板（5 2 )之背面之反射板（ 5 3 );由配置於導光板（5 2 )側面之光源（5 1 )來的光， 經覆盡於非面對導光板（5 2 )側之反射鏡（5 4 )反射，首 先進入導光板（52)，同時與反射板（53)之反射相會合 ，在導光板（52)正面放出均勻的光；此光源裝置（61) 是配置於層合偏光膜（1 0 )之吸收型偏光膜（22 )的外側 ，構成偏光光源裝置（64 ) •，又，以層合偏光膜（1 〇 )之 吸收型偏光膜（22 )側，對向配置於液晶元件（3 0 )之底 面，在液晶元件（3 0 )之正面上配置正面側吸收型偏光膜 (41 )，構成液晶顯示裝置（67)。 另一方面，圖5中光源裝置（62)稱爲直接式，由光 源（5 1 )與配置於其底面的反射板（5 3 )所構成；來自光 源（5 1 )的直接射出光、與由反射板（5 3 )而來的反射光 ，使用此兩方來的光照明；此光源裝置（62 )是配置於層 合偏光膜（1 〇 )之吸收型偏光膜（22 )的外側’構成偏光 光源裝置（6 5 );又，以層合偏光膜（1 0 )之吸收型偏光 -19- (15) (15)200418637 膜（22 )側，對向配置於液晶元件（3 0 )之底面，在液晶 元件（3 0 )之正面上，配置正面側吸收型偏光膜（4 1 )， 構成液晶顯不裝置（6 8 )。 本發明之偏光光源裝置，對圖1、圖2、及圖3所示 例之層合偏光膜（1 〇 )而言，是在吸收型偏光膜（22 )之 射出光面配置光源裝置（61)或（62);此光源裝置，具 備有光源零件材料及反射板；圖4所示爲所謂的側光式光 源裝置，圖5爲所謂的直接式光源裝置，任何一種都可使 用；如圖4所示側光式時，係由光源（5 1 )、導光板（5 2 )、及光源零件材料所構成；又，在光源裝置中，因應需 求，可於其射出光面配置擴散薄板及透鏡片；特別是在側 光式中，已往的偏光光源裝置，也廣泛配置擴散片及透鏡 片’本發明之偏光光源裝置也一樣，而且此等可以單方面 或雙方面配置。 圖4及圖5所示之偏光光源裝置、以及液晶顯示裝置 中’光源裝置（6 1 )或（62 )所使用的光源（5 1 )沒有特 別的限制’眾所周知的偏光光源裝置、以及液晶顯示裝置 中所採用者，本發明同樣可以使用；適當的光源（5 1 )， 具體的有冷陰極管、發光二極管、無機或有機之電激發光 燈等等。 反射板（5 3 )也沒有特別的限制，眾所周知的偏光光 源裝置及液晶顯示裝置所採用者，本發明都可使用；具體 的說’內部形成空洞之白色塑膠板、表面上塗佈氧化鈦、 氧化鋅等白色顏料之塑膠板，由至少二種不同折射率塑膠 -20- (16) (16)200418637 薄膜層合而成之多層塑膠板、由鉛、銀等金屬所成之薄板 等等；此等薄板，其鏡面加工者，粗面加工者均可使用； 構成反射板之塑膠薄板，其材質也沒有特別的限制，如熱 可塑性樹脂、熱硬化性樹脂等都可使用。 圖4中所示導光板（5 2 )，由內部獲取發自光源（5 1 )的光，爲具有面狀發光體機能者；眾所周知的偏光光源 裝置及液晶顯示裝置中所採用者，本發明都可使用；此導 光板，可以使用由塑膠薄板或玻璃板所成，在其背面，經 凹凸處理、白色圓點印刷處理、全息照相處理等處理者； 以塑膠薄板構成導光板時，其材質沒有特別的限制，以使 用聚碳酸酯、原菠烷系樹脂、聚甲基丙烯酸酯等爲佳。 光源裝置之射出光面上，因應需求而配置的擴散薄板 ，是使射入光散射透過之薄板；通常爲全光線透過率在 6 0%以上、霾霧率在10%以上的光學元件；擴散薄板之 全光線透過率愈高愈好，以全光線透過率在80%以上爲 佳；此擴散薄板沒有特別的限制，如經粗面處理的塑膠薄 板及玻璃板、內部形成空洞而且添加粒子之塑膠薄板及玻 璃板等都可以使用；塑膠薄板之材質，沒有特別的限制， 如熱可塑性樹脂、熱硬化性樹脂等均可使用。 光源裝置之射出面上，因應需求而配置的透鏡薄板， 是使發自光源之光進行聚光的薄板；還是一樣，可以使用 眾所周知的偏光光源裝置及液晶顯示裝置中所採用者；此 透鏡薄板，可以使用在塑膠薄板上形成多數微細之稜鏡者 、裝配凸透鏡、凹透鏡而成之顯微鏡組列等等。 -21 - (17) (17)200418637 本發明之液晶顯示裝置是，如圖4或圖5之具體例所 示，在偏光光源裝置（64)或（65)之射出光面的層合偏 光膜（1 0 )上，依序配置有液晶元件（3 0 )與正面吸收型 偏光膜（4 1 )者；在液晶元件（3 0 )與正面吸收型偏光膜 (4 1 )之間，因應需求可以配置一板或多數板的光學補助 薄膜；又，因應需求可以在液晶元件（3 0 )之正面配置光 擴散層；而且，光學補助薄膜與光擴散層可以兩者都配置 ;構成液晶顯示裝置的各零件材料，特別是自層合偏光膜 (1 0 )至正面吸收型偏光膜（4 1 )止之各零件材料，以相 鄰至少有一對使用感壓黏著劑之密著層合爲佳；以相鄰之 全部，使用感壓黏著劑之密著層合最好。 使用液晶元件（3 0 )之液晶顯示裝置是，爲切換透過 光量，在兩片基板之間封入液晶，於加電壓時具有使液晶 之定向狀態發生變化的機能之裝置；在兩片基板的各個內 側上，配置底面透明電極（3 1 )及正面透明電極（3 2 )， 其間挾持著液晶層（3 3 );除液晶元件（3 0 )之外，圖上 沒有標示的，尙有爲使液晶層（3 3 )定向之定向膜，彩色 顯示之彩色濾光片層； 本發明中，構成液晶元件（3 0 )之液晶種類及其驅動 方式沒有特別的限制，眾所周知的對絞絲狀（TN )液晶 、超級對後絲狀（STN )液晶都可使用·，又，薄膜晶體管 (TFT)驅動方式、垂直定向（VA)方式、橫向電場驅動 方式、光學補助彎頭導管（〇CB )等，使用偏光進行顯示 的方式’本發明可以適用，其中，橫向電場驅動方式的液 -22- (18) (18)200418637 晶元件（橫向電場型液晶元件），容易受靜電之影響，使 用本發明之層合偏光膜，最具效果。 正面吸收型偏光膜（4 1 )，可使用與上述說明之構成 本發明層合偏光膜的吸收型偏光膜，所使用相同之物質； 又，在液晶元件（3 0 )與正面吸收型偏光膜（4 1 )之間， 因應需求插入光學補助薄膜亦可；此時應選定光學補助薄 膜之光學特性，與所使用液晶之特性相合者；爲防止光學 補助薄膜，因空氣層的介入而產生光之損失，因此期望其 與相鄰之薄膜、層、或液晶，能以感壓黏著劑層合整體化 ;又，正面吸收型偏光膜（4 1 )與液晶（3 0 )之間，將擴 散層層合亦佳，可使用與上述說明之構成層合偏光膜的光 擴散層，所使用相同之物質。 【實施方式】 以實施例就本發明做詳細之說明如下，本發明對此實 施例沒有特別的限制；例中使用之薄膜及各種材料如下。 (1 )反射型偏光膜 商品名「DBEF」：以住友3M股份有限公司販賣之 多層層合膜所成提高亮度的薄膜；此薄膜，可透過某方向 的直線偏光，而將與其成直交方向的直線偏光反射；此薄 膜之表面固有電阻，以三菱化學股份有限公司製之「海雷 特® UP MCP- HT450」，在加電壓1 000V，加電壓時間 1 〇秒鐘之條件下測定之，其値超過此裝置之測定可能上 -23- (19) (19)200418637 限 lx 1015 Ω /□。 (2 )吸收型偏光膜 商品名「施敏卡® SRW862A」：爲住友化學工業股 份有限公司販賣之吸收型偏光膜；由在單軸定向後之聚乙 烯醇薄膜中，以碘定向浸漬所作偏光鏡之兩面，再用三醋 酸纖維素薄膜被覆，所構造而成；此薄膜，可透過某方向 之直線偏光，而將與其成直交方向的直線偏光吸收；此薄 膜之表面固有電阻，在加電壓1 000V，時間10秒鐘之條 件下，測得 8. lx 1014Ω /□。 商品名「施敏卡® SRW862A- NSC」：爲住友化學工 業股份有限公司販賣之吸收型偏光膜；是在商品名^ SRW8 62 A」之單面上，形成以防靜電劑分散於光硬化性樹 脂的硬化皮膜；此防靜電層之表面固有電阻’在加電壓 5 00V，時間10秒鐘之條件下，測定爲4.6χ ΙΟ12 Ω /□。 (3 )防靜電劑 將三烷基-2-羥基乙基銨鹽，溶於季戊四醇與乙醇 之混合溶劑，即可使用。 (4 )感壓黏著劑 爲住友化學工業股份有限公司販賣之光學薄膜使用感 壓黏著劑7號；此感壓黏著劑爲丙烯酸系感壓黏著劑。 -24- (20) (20)200418637 〔實施例1〕 在反射型偏光膜「DBEF」之單面上，均勻塗佈防靜 電劑三烷基-2-羥基乙基銨鹽之溶解液，經風乾使溶劑 揮發除去，製成附帶防靜電劑層之反射型偏光膜；防靜電 層之表面固有電阻，在加電壓5 00V、時間10秒鐘之條件 下，測得2.4χ ΙΟ9 Ω /□:在沒有形成防靜電層之面上， 以感壓黏著劑7號，將吸收型偏光膜「施敏卡®SRW8 62 A 」層合之，製成層合偏光膜；於此層合偏光膜之防靜電層 上，以單面塗佈粘著劑之聚對苯二甲酸乙烯酯薄膜的市售 保護膜膠粘之，製成附帶保護膜之層合偏光膜；而且在附 帶保護膜層合偏光膜的吸收型偏光膜面上，塗佈感壓黏著 劑7號，其上再以由聚對苯二甲酸乙烯酯薄膜所成市售之 脫模膜膠粘之。 將此附帶單面保護膜/他面感壓黏著劑之層合偏光膜 的脫模膜剝離除去，以露出之感壓黏著劑，膠粘於玻璃板 上；其次，用手剝去保護膜，此時測定（A )層合偏光膜 上之剝離靜電壓，（B )玻璃板之剝離靜電壓；結果如表 1所示，剝離靜電壓低、靜電之影響少；將此膠粘於玻璃 板上的層合偏光膜，使玻璃板在上，配置於側光式光源裝 置上，即製成偏光光源裝置；在此偏光光源裝置之上，將 吸收型偏光膜「施敏卡® SRW862A」配置於偏光光源裝 置最暗的位置；於此狀態下，以目視觀察偏光光源裝置， 特別的是觀察不到光點發生。 -25- (21) (21)200418637 〔實施例2〕 在吸收型偏光膜「施敏卡® SRW8 62A」之單面上， 均句塗佈防靜電劑三烷基-2-羥基乙基銨鹽之溶解液， 糸S ®乾使溶劑揮發除去，製成附帶防靜電層之吸收型偏光 膜；防靜電層之表面固有電阻，在加電壓500V、時間10 秒鐘之條件下，測得6.0χ 109Ω /□;以感壓黏著劑7號 膠粘於反射型偏光膜「DBEF」上，而且，以附帶防靜電 層吸收型偏光膜之防靜電層面做爲膠粘面層合之，製成層 合偏光膜；於此層合偏光膜之反射型偏光膜上，以單面塗 佈粘著劑之聚對苯二甲酸乙烯酯薄膜的市售保護膜膠粘之 ’製成附帶保護膜之層合偏光膜；以與實施例1相同的操 作，製成附帶單面保護膜/他面感壓黏著劑之層合偏光膜 ;膠粘於玻璃板後，用手剝去保護膜，此時測定（A )層 合偏光膜上之剝離靜電壓，（B )玻璃板之剝離靜電壓； 結果如表1所示，剝離靜電壓低、靜電之影響少；將於膠 粘玻璃板上的層合偏光膜，以與實施例1相同的操作，製 成偏光光源裝置；以目視觀察之，特別的是，觀察不到光 點發生。 〔實施例3〕 準備好單面形成防靜電層之吸收型偏光膜「施敏卡® SRW862A- NSC」；此膜防靜電層的硬度，以JIS K5 600- 5 - 4「塗料一般試驗方法第5部；塗膜之機械性質第4節 :描畫硬度（鉛筆法）」之規格爲基準評定之，爲2H ; -26- (22) (22)200418637 將感壓黏著劑7號膠粘於反射型偏光膜「D B E F」上， 而且，以附帶防靜電層吸收型偏光膜之防靜電層做爲膠粘 面層合之，製成層合偏光膜；於此層合偏光膜之反射型偏 光膜上，以單面塗佈粘著劑之聚對苯二甲酸乙烯酯薄膜的 市售保護膜膠粘之，製成附帶保護膜之層合偏光膜；膠粘 於玻璃板後，用手剝去保護膜，此時測定（A )層合偏光 膜上之剝離靜電壓，（B )玻璃板之剝離靜電壓；結果如 表1所示，剝離靜電壓低、靜電之影響少；將膠粘於玻璃 板上的層合偏光膜，以與實施例1相同的操作，製成偏光 光源裝置；以目視觀察之，特別的是，觀察不到光點發生 〔比較例1〕 將反射型偏光膜「DBEF」、感壓黏著劑7號、吸收 型偏光膜「施敏卡® SRW862A」、依序層合，製成層 合偏光膜；於此層合偏光膜之反射型偏光膜上，以單面塗 佈粘著劑之聚對苯二甲酸乙烯酯薄膜的市售保護膜膠粘之 ，製成附帶保護膜之層合偏光膜；而且，以與實施例1相 同的操作，製成附帶單面保護膜/他面感壓黏著劑之層合 偏光膜；膠粘於玻璃板後，用手剝去保護膜，此時測定（ A )層合偏光膜上之剝離靜電壓，（B )玻璃板之剝離靜 電壓；結果如表1所示，剝離靜電壓高、且發生靜電；將 膠粘於玻璃板上的層合偏光膜，以與實施例1相同的操作 ，製成偏光光源裝置；以目視觀察之，特別的是，觀察不 -27- (23) (23)200418637 到光點發生。 〔比較例2〕 將感壓黏著劑7號膠粘於反射型偏光膜「DBEF」， 而且，與實施例3使用者相同，將附帶防靜電層吸收型偏 光膜之沒有形成防靜電層的面，做爲膠粘面層合之，製成 層合偏光膜；也就是說，此時防靜電層，在構成層合偏光 膜之吸收型偏光膜的外側形成；於此層合偏光膜之反射型 偏光膜上，以單面塗佈粘著劑之聚對苯二甲酸乙烯酯薄膜 的市售保護膜膠粘之，製成附帶保護膜之層合偏光膜；而 且，將感壓黏著劑7號塗佈於防靜電層上，於其上，再膠 粘由聚對苯二甲酸乙烯酯薄膜所成市售之脫模膜，製成附 帶單面保護膜/他面感壓黏著劑之層合偏光膜；膠粘於玻 璃板後，以與實施例1相同的操作，用手剝去保護膜，此 時測定（A )層合偏光膜上之剝離靜電壓，（B )玻璃板 之剝離靜電壓；結果如表1所示，剝離靜電壓低、靜電之 發生被抑制；將此膠粘於玻璃板之的層合偏光膜，以與實 施例1相同的操作，製成偏光光源裝置；以目視觀察，有 因防靜電層而起之光點發生。 -28- (24) 200418637 表1 例No· (A)層合偏光 (B)玻璃板側 光點之有無 膜側剝離靜電 剝離靜電壓 壓 實施例 1 O.OkV 0.6kV >fnT- 實施例 2 -0.8kV -3.OkV inL. 實施例 3 -1 . OkV -1.7kV 赃 比較例 1 -4.7kV • 8.6kV Μ 比較例 2 -0.3kV -0.9kV 有 本發明之層合偏光膜， •具有防靜電機能 ，在剝離除去 保護膜時： ，極少產生靜電； :又，由防靜電層而起之欠點並 不影響顯示，能維持良好之顯示品質。 【圖式簡單說明】 (圖1 )爲本發明層合偏光膜之基本構成層示例的截 面圖。 (圖2)爲本發明層合偏光膜之構成層中配置感壓黏 著劑的截面圖。 - (圖3)爲本發明層合偏光膜之構成層中防靜電層層 合構成的截面圖。 (圖4 )爲液晶顯示裝置之層構造例的截面圖。 (圖5 )爲液晶顯示裝置之層構造其他例的截面圖。 -29- (25) 200418637 〔符號說 10 : 2 1: 22 ： 23 ： 24 ： 30 ： 3 1 > 33 ： 41 ： 5 1: 52 ： 53 ： 54 ： 6 1' 64 、 61' 68 明〕 層合偏光膜 反射型偏光膜 吸收型偏光膜 防靜電層 感壓黏著劑 液晶元件 3 2 :透明電極 液晶層 正面吸收型偏光膜 光源 導光板 反射板 反射鏡 62 :光源裝置 6 5 ·偏光光源裝置 液晶顯示裝置V (8) V200418637 also has good adhesion; pressure-sensitive adhesiveness, in terms of adhesiveness, means that its adhesiveness can be peeled off again. The reflective polarizing film used in the present invention can reflect polarized light with different properties through a certain type of polarized light. The reflective polarizing film includes a reflective linear polarizing film having a function of separating polarized light from linear polarized light. 'And a reflective circular polarizing film having a function of separating polarized light from circular polarized light. Reflective linear polarizing film can reflect linear polarizing light that is orthogonal to the vibration direction through linear polarizing light of a specific vibration direction; the polarizing light transmission axis of the reflective linear polarizing film is that the linear polarizing light of a specific vibration direction is perpendicular to the polarizing film When entering in a direction, it is the direction of maximum transmittance; the polarization reflection axis is the direction orthogonal to it. On the other hand, a reflective circularly polarizing film can transmit circularly polarized light in a certain rotation direction and reflect circularly polarized light rotating in the opposite direction. When a reflective circularly polarizing film is used in the present invention, a 1/4 wavelength retardation film is used. Laminated, the transmitted light is converted from circularly polarized light to linearly polarized light, and an absorption-type polarizing film is preferred. Reflective linear polarizing films, such as reflective polarizing films based on Brewster's Angle and the difference in reflectance of polarized components (as described in Japanese Patent Publication No. 6-508449), Reflective polarizing film for the construction of fine metal linear patterns (as described in Japanese Patent Application Laid-Open No. 2-308 1 06), using at least two kinds of polymer films laminated, anisotropy according to the refractive index, and the use of the reflectivity anisotropy Anisotropic reflective polarizing film (as described in Japanese Patent Publication No. 9- 5 068 3 7; commercially available products include the brand name "DBEF" manufactured by 3M), and at least two types of polymer films High score 200418637 〇) reflective polarizing film formed by the island, with an island structure, according to the anisotropy of the refractive index, the use of the anisotropy of the reflectivity (such as in US Pat. No. 5, 82 5,543 specification) Records; commercially available products include 3M's brand name "DRPF"), a reflective polarizing film made by dispersing particles in a polymer film and using the anisotropy of the reflectivity according to the anisotropy of the refractive index ( As described in Japanese Patent Publication No. 1 1-5 090 1 4 2. Reflective polarizing film in which inorganic particles are dispersed in a polymer film and the anisotropy of the reflectance is used based on the difference in scattering energy of the particle size (as described in JP 9-2 9 7 2 04 ),and many more. On the other hand, a reflective circular polarizing film, such as a reflective polarizing film using selective reflectivity of a cholesteric liquid crystal (as described in Japanese Patent Application Laid-Open No. 3-45 906; available in the market, Merck products Name "Transmax®", Nitto Denko's trade name "Niyo®"), etc. The thickness of the reflective polarizing film is not particularly limited. When the laminated polarizing film of the present invention is used in a liquid crystal display element or the like, the reflective polarizing film is preferably thinner; specifically, it is preferably less than 1 mm. It is more suitable to be less than 0.2 mm; among them, a reflective polarizing film formed by laminating at least two kinds of polymer films, using anisotropy of refractive index according to the anisotropy of refractive index, and the polymer The film is made of at least two kinds of polymers and has a sea-island structure. It is a reflective polarizing film made of anisotropy of refractive index using anisotropy of reflectance and a selective reflective material using cholesteric liquid crystal. The reflective circular polarizing film is particularly suitable for the laminated polarizing film having a relatively small thickness in the present invention. The absorption-type polarizing film used in the present invention can transmit linearly polarized light of a specific vibration direction -14-200418637 (ίο), and the polarization transmission axis of the linearly-polarized light-absorbing polarizing film that is orthogonal to it is a straight line of a specific vibration direction When the polarizing film is incident in the vertical direction, it is the direction with the maximum transmittance. This type of absorption-type polarizing film can be a well-known iodine-based or dye-based polarizing film. The iodine: system-based polarizing film is an iodine complex compound that is a dichroic pigment in a stretched poly film. Films that become substrates; Dye-based polarizing films are films made by absorbing dichroic dyes that are dichroic dyes as dichroic dyes in stretched polymeric films; these absorbing polarizing films are To improve its durability, it is better to coat it with a resin film on one or both sides; for protection as the coating resin, cellulose diacetate, cellulose triacetate vinyl phthalate, cyclic olefin resin, etc. can be used. The thickness of the absorptive polarizing film is not particularly limited. When the laminated polarizing film of the present invention is used in a liquid element or the like, the absorptive type is preferably a thinner one; specifically, a thickness of 1 mm or less is preferred. 0 or less is suitable. The laminated polarizing film of the present invention may be provided with an optical compound at any position; the optical auxiliary film is a film used in a liquid crystal display device to improve or improve the image quality, such as a viewing angle; a polymer resin, a ring Polyolefin resin, polycoded resin, polyarylate resin, or cellulose diacetate, cellulose triacetate, etc. are formed by a uniaxial or biaxial stretching retardation film (such as Sumitomo Chemical Co., Ltd. Minka® "), a retardation film formed by liquid crystal alignment on cellulose triacetate (such as the product name of Fuji Photographic Film": absorbs light from this polarizing film vinyl alcohol polarizer vinyl alcohol polaron mirror properties, for the purpose Polycrystalline anti-polarization display polarizing film. 2mm auxiliary film layer color correction carbonate ester resin manufacturer manufacturer compound WV thin (11) (11) 200418637 film ", Nippon Petroleum Corporation trade name" LCD film " , "NH film", etc. In addition, these optical auxiliary films are usually laminated on the outer side of the absorptive polarizing film. In order to improve the characteristics of the reflective polarizing film, it can also be on the outer side of the reflective polarizing film or reflective The polarizing film and the absorptive polarizing film are laminated. In the laminated polarizing film of the present invention, a diffusion layer can be laminated at any position; the diffusion layer has a structure having a non-uniform refractive index inside the layer, and therefore has the ability to make light A layer with scattered characteristics; a well-known substance can be used in the diffusion layer, such as those obtained by dispersing particles in any of a thermoplastic resin, a thermosetting resin, and a photocuring resin, and dispersing the particles in a pressure-sensitive adhesive Particles are dispersed, and the like; other examples are refractive index-modulated light-scattering films made of two or more types of photo-curable compounds having different refractive indices, or thermosetting compounds. The polarizing film and each layer, when the laminate is integrated, the adhesive used according to the needs is preferably a close adhesion layer; for example, when the antistatic layer (2 3) is a thin film with self-retaining properties, as shown in the figure 2 (a) or (b) in the cross-sectional view, the film and layer are composed of adhesive (24), it is more appropriate to adhere to the layer; the antistatic layer (23) directly on the reflective polarizing film (2 1) or suck When forming a retractable polarizing film, as shown in the cross-sectional views in (a) to (c) of Fig. 3, between the constituent film and the layer, an adhesive (24) is used according to the requirements, and it is better to adhere to the layer. When the agent is colorless and transparent, there is no particular limitation, and a hot-melt adhesive such as an ethylene / vinyl acetate copolymer, a water-based adhesive prepared by dissolving a polyvinyl alcohol-based resin in water, a polyacrylate resin, and a polymer can be used. Solvent-based adhesives prepared by dissolving an ester-based resin in a solvent, light-curing adhesives containing propyl-16- (12) (12) 200418637 alkenyl compounds as main components, epoxy resins and amines, etc. Two-liquid reactive adhesives formed by the curing reaction, moisture-curing adhesives such as cyanopropionate, etc. In addition, pressure-sensitive adhesives are one of the applicable adhesives; pressure-sensitive adhesives are all [| YES It can be adhered to the surface of other substances just by pressing firmly. This pressure-sensitive adhesive, when peeled from the adhered surface, will have almost no trace if the strength of the adhered surface is sufficient. It is a removable viscoelastic body, also known as Is an adhesive; pressure sensitive adhesive, can Use acrylic pressure sensitive adhesive, vinyl chloride pressure sensitive adhesive, synthetic rubber pressure sensitive adhesive, natural rubber pressure sensitive adhesive, silicone pressure sensitive adhesive, etc. Among these adhesives, acrylic pressure-sensitive adhesives are one of the more suitable adhesives for workability and durability. Acrylic pressure-sensitive adhesives are mainly used to impart adhesiveness and low glass transition temperature. The main monomer component is a copolymer composed of a body composition, a copolymerization monomer component that imparts adhesion, cohesion, and high glass transition temperature, and a monomer component containing functional groups such as bridging and adhesion improvement; Ethyl acrylate, butyl acrylate, pentyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, cyclohexyl acrylate, benzyl acrylate, etc. can be used; butyl methacrylate, methyl Amyl acrylate, 2-ethylhexyl methacrylate, octyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, etc. alkyl methacrylate, etc .; monomer components for copolymerization, Acrylic acid, methyl methacrylate, ethyl methacrylate, vinyl acetate, styrene, acrylonitrile, etc. can be used; monomer components containing functional groups can be acrylic acid, methyl Carboxyl-containing mono-17- (13) (13) 200418637 isomers of enoic acid, maleic acid, itaconic acid, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, N-methanol Hydroxyl-containing monomers such as ammonium acrylate, ammonium acrylate, ammonium methacrylate, glycidyl methacrylate, and the like. Pressure-sensitive adhesives, which are suitable for cross-linking, are suitable for adding epoxy compounds, isocyanate compounds, metal chelate compounds, metal alkoxides, metal salts, amine compounds, hydrazine compounds, aldehyde compounds, etc. Bridging agent, and the method of bridging; the method of bridging with radiation irradiation can be applied; these should be appropriately selected according to the type of functional group; the weight average molecular weight of the main polymer constituting the pressure-sensitive adhesive is 600,000 It is better to be 2 million ', preferably 800,000 to 1.8 million; when the weight average molecular weight is less than 600,000, if too much plasticizer is added as described below, the pressure-sensitive adhesive will adhere to the adherend and The durability is reduced, and the weight average molecular weight exceeds 2 million. Especially when the amount of the plasticizer is too small, the elasticity of the pressure-sensitive adhesive is increased, and the softness is decreased. The adherent generates shrinkage stress and cannot absorb it. And moderating effects. Pressure-sensitive adhesives are preferably used in combination with plasticizers; plasticizers can use phthalates, trimellitic acid esters, pyromellitic acid esters, adipates, sebacates, and phosphate triesters , Glycol esters and other esters; process oils, liquid polyethers, liquid polyterpenes, other liquid resins, etc. These can be used alone or in combination of two or more; In pressure-sensitive adhesives, according to demand Additives such as ultraviolet absorbers, light stabilizers, and oxidation inhibitors can be added. The laminated polarizing film of the present invention can be made into a polarized light source device by using its absorptive polarizing film side as the light emitting surface; the absorptive polarizing film side of this polarizing light source device is equipped with a liquid crystal element for display and can be made into liquid crystal. Display device; -18- (14) (14) 200418637 These polarized light source devices and liquid crystal display devices are explained below with reference to the cross-sectional diagrams of FIGS. 4 and 5. In the examples shown in Figs. 4 and 5, the same as that shown in & 1 is shown in the order of the absorbing polarizing film (22), the antistatic layer (23), and the reflective polarizing film (2 1). A laminated polarizing film (丨 0) is formed; a light source device (6 丨) or (6 2) is arranged on the reflective polarizing film (2 1) side to form a polarized light source device (64) or (65). In FIG. 4, the light source device (60 is referred to as an edge-light type, which is equipped with a light source (51), a light guide plate (52), and a reflective plate (53) at the back of the light guide plate (52); The light from the light source (5 1) on the side of the light guide plate (5 2) is completely reflected by the reflector (5 4) on the side that is not facing the light guide plate (5 2), and first enters the light guide plate (52). The reflections of the reflection plate (53) meet and emit uniform light on the front surface of the light guide plate (52); the light source device (61) is arranged outside the absorption-type polarizing film (22) of the laminated polarizing film (10), The polarizing light source device (64) is constituted, and the polarizing film (10) is laminated with the absorbing polarizing film (22) side, and is arranged opposite to the bottom surface of the liquid crystal element (30), and the liquid crystal element (30) A front-side absorbing polarizing film (41) is disposed on the front surface to constitute a liquid crystal display device (67). On the other hand, the light source device (62) in FIG. 5 is called a direct type, and the light source (5 1) and the bottom surface are arranged on the bottom surface. The reflecting plate (5 3) is composed of the light emitted directly from the light source (5 1) and the reflected light from the reflecting plate (5 3). The light source device (62) is a polarizing light source device (6 5) disposed outside the absorptive polarizing film (22) of the laminated polarizing film (10); and a laminated polarizing film (1 0) Absorptive Polarization-19- (15) (15) 200418637 The film (22) side is oppositely arranged on the bottom surface of the liquid crystal element (3 0), and the front side of the liquid crystal element (30) is arranged with front side absorption Type polarizing film (4 1), which constitutes a liquid crystal display device (6 8). The polarizing light source device of the present invention is, for the laminated polarizing film (1 0) illustrated in FIG. 1, FIG. 2, and FIG. A light source device (61) or (62) is arranged on the light-emitting surface of the absorptive polarizing film (22); this light source device is provided with a light source component material and a reflecting plate; FIG. 4 shows a so-called edge-light type light source device. 5 is a so-called direct-type light source device, and any of them can be used. In the case of the edge-light type shown in FIG. 4, it is composed of a light source (5 1), a light guide plate (5 2), and light source parts and materials. In the light source device, a diffuser sheet and a lens sheet can be arranged on the light emitting surface of the light source device according to demand; especially in the side-light type, The conventional polarized light source devices are also widely equipped with diffuser sheets and lens sheets. The polarized light source devices of the present invention are also the same, and these can be arranged unilaterally or bidirectionally. The polarized light source devices shown in FIGS. 4 and 5 and the liquid crystal display Among the devices, "the light source (6 1) or (62) has no particular limitation on the light source (5 1) used". The present invention can also be used for well-known polarized light source devices and liquid crystal display devices; suitable light sources (51) Specific examples include cold-cathode tubes, light-emitting diodes, and inorganic or organic electric excitation light lamps. The reflection plate (53) is also not particularly limited. The present invention can be used for well-known polarized light source devices and liquid crystal display devices; specifically, a white plastic plate with a cavity formed inside, titanium oxide coated on the surface, Plastic plates of white pigments such as zinc oxide, multilayer plastic plates made of at least two different refractive index plastic -20- (16) (16) 200418637 films, thin plates made of metals such as lead and silver, etc .; These thin plates can be used by both the mirror finisher and the rough finisher; the material of the plastic sheet constituting the reflective plate is also not particularly limited, such as thermoplastic resins and thermosetting resins. The light guide plate (5 2) shown in FIG. 4 internally obtains the light emitted from the light source (5 1), and is a person having a function of a planar light emitter; the well-known polarized light source device and the liquid crystal display device are adopted by the present invention Both can be used; this light guide plate can be made of plastic sheet or glass plate, on the back, processed by bump treatment, white dot printing, holographic processing, etc .; when the light guide plate is made of plastic sheet, its material There is no particular limitation, and it is preferable to use polycarbonate, orthorane resin, polymethacrylate, or the like. The diffuser sheet arranged according to requirements on the light-emitting surface of the light source device is a sheet that diffuses and transmits incident light; usually it is an optical element with a total light transmittance of more than 60% and a haze rate of more than 10%; diffusion The higher the total light transmittance of the sheet, the better. It is better that the total light transmittance is above 80%. There is no special limitation on the diffusion sheet, such as plastic sheet and glass plate with rough surface treatment, voids formed inside and particles added. Both plastic sheet and glass plate can be used; the material of the plastic sheet is not particularly limited, such as thermoplastic resin, thermosetting resin, etc. can be used. The lens sheet arranged according to the requirements on the emitting surface of the light source device is a sheet for condensing the light emitted from the light source; the same can be used in well-known polarized light source devices and liquid crystal display devices; this lens sheet You can use a microscope group formed by forming most of the finer ones on a plastic sheet, assembling a convex lens, and a concave lens. -21-(17) (17) 200418637 The liquid crystal display device of the present invention is, as shown in a specific example of FIG. 4 or FIG. 5, a laminated polarizing film on a light emitting surface of a polarized light source device (64) or (65). (1 0), a liquid crystal element (30) and a front-absorbing polarizing film (4 1) are sequentially arranged; between the liquid crystal element (30) and the front-absorbing polarizing film (4 1), according to demand An optical auxiliary film of one plate or a plurality of plates can be arranged; a light diffusion layer can be arranged on the front surface of the liquid crystal element (30) according to demand; moreover, both the optical auxiliary film and the light diffusion layer can be arranged; constituting a liquid crystal display device Each component material, especially the component material from the laminated polarizing film (1 0) to the front absorbing polarizing film (4 1), is preferably laminated with at least one pair of adjacent pressure-sensitive adhesives. ; Adjacent all, the best lamination using pressure-sensitive adhesive. A liquid crystal display device using a liquid crystal element (30) is a device that seals liquid crystal between two substrates in order to switch the amount of transmitted light, and has the function of changing the orientation state of the liquid crystal when a voltage is applied; On the inner side, a bottom transparent electrode (3 1) and a front transparent electrode (3 2) are arranged, and a liquid crystal layer (3 3) is held in between; except for the liquid crystal element (30), there is no indication on the figure. Liquid crystal layer (3 3) oriented film, color filter layer for color display; In the present invention, the type of liquid crystal constituting the liquid crystal element (30) and its driving method are not particularly limited. TN) liquid crystal and super-back-filament (STN) liquid crystal can be used. Also, thin film transistor (TFT) driving method, vertical alignment (VA) method, lateral electric field driving method, optical auxiliary elbow duct (〇CB), etc. "The method of displaying using polarized light" The present invention is applicable, in which a liquid crystal liquid crystal device (transverse electric field type liquid crystal device) of the liquid electric field driving method of the horizontal electric field driving method (transverse electric field type) is used, Together with the polarizing layer of the present invention, the most effect. The front-absorptive polarizing film (4 1) can be the same as the above-described absorptive polarizing film constituting the laminated polarizing film of the present invention, and the liquid crystal element (30) and the front-absorptive polarizing film can be used. (4 1), it is also possible to insert an optical auxiliary film according to the needs; at this time, the optical characteristics of the optical auxiliary film should be selected to match the characteristics of the liquid crystal used; in order to prevent the optical auxiliary film from generating light due to the intervention of the air layer Therefore, it is expected that it can be integrated with the adjacent film, layer, or liquid crystal with a pressure-sensitive adhesive layer; and, the front absorption polarizing film (4 1) and the liquid crystal (3 0) will diffuse. Layer lamination is also preferable, and the same light diffusion layer as that of the laminated polarizing film described above can be used. [Embodiment] The present invention will be described in detail with reference to the following examples. The present invention is not particularly limited to this example; the films and various materials used in the examples are as follows. (1) Reflective polarizing film trade name "DBEF": a film made of multilayer laminates sold by Sumitomo 3M Co., Ltd. to increase brightness; this film can pass linear polarized light in a certain direction and will be orthogonal to it. Linear polarized light reflection; The inherent resistance of this film was measured with "Hellet® UP MCP-HT450" manufactured by Mitsubishi Chemical Corporation under a voltage of 1,000 V and a time of 10 seconds.値 Measurements exceeding this device may be limited to -23- (19) (19) 200418637 limit lx 1015 Ω / □. (2) Absorptive polarizing film trade name "Shiminka® SRW862A": Absorptive polarizing film sold by Sumitomo Chemical Industry Co., Ltd .; polarized by iodine orientation impregnation in a polyvinyl alcohol film after uniaxial orientation The two sides of the mirror are covered with a cellulose triacetate film. The film can pass linearly polarized light in a certain direction and absorb linearly polarized light in a direction orthogonal to it. The inherent resistance of the surface of the film is applied to a voltage. Under the condition of 1 000V and time of 10 seconds, 8.lx 1014Ω / □ was measured. Trade name "Shiminka® SRW862A- NSC": Absorptive polarizing film sold by Sumitomo Chemical Industry Co., Ltd .; formed on one side of the trade name ^ SRW8 62 A "to form an antistatic agent dispersed in photohardenability Resin hardened film; the inherent resistance of the surface of this antistatic layer was measured under the conditions of a voltage of 500V and a time of 10 seconds to be 4.6χ 1012 Ω / □. (3) Antistatic agent Dissolve the trialkyl-2-hydroxyethylammonium salt in a mixed solvent of pentaerythritol and ethanol and use it. (4) Pressure-sensitive adhesive Use pressure-sensitive adhesive No. 7 for optical films sold by Sumitomo Chemical Industry Co., Ltd .; this pressure-sensitive adhesive is an acrylic pressure-sensitive adhesive. -24- (20) (20) 200418637 [Example 1] On one side of the reflective polarizing film "DBEF", a solution of an antistatic agent trialkyl-2-hydroxyethylammonium salt was uniformly applied, and Air-drying removes the solvent and volatilizes to form a reflective polarizing film with an antistatic agent layer. The inherent resistance of the surface of the antistatic layer is measured under the conditions of a voltage of 500V and a time of 10 seconds. 2.4χ IO09 Ω / □: On the side where the antistatic layer is not formed, the pressure-sensitive adhesive No. 7 is used to laminate an absorption polarizing film "Schminka® SRW8 62 A" to make a laminated polarizing film. Here, the polarizing film is laminated. On the antistatic layer, a commercially available protective film of a polyethylene terephthalate film coated with an adhesive on one side was adhered to make a laminated polarizing film with a protective film; and a polarizing film was laminated on the protective film. The absorption-type polarizing film surface of the film was coated with a pressure-sensitive adhesive No. 7, and then a commercially available release film made of a polyethylene terephthalate film was adhered thereon. Peel off the release film of the laminated polarizing film with the single-sided protective film / other pressure-sensitive adhesive, and use the exposed pressure-sensitive adhesive to adhere to the glass plate. Next, peel off the protective film by hand. At this time, (A) the peeling static voltage on the laminated polarizing film, (B) the peeling static voltage of the glass plate; the results are shown in Table 1, the peeling static voltage is low, and the effect of static electricity is small; this adhesive is adhered to the glass plate The polarizing film is laminated so that the glass plate is placed on the side-light source device, which is made into a polarized light source device. On this polarized light source device, an absorption-type polarizing film "Schminka® SRW862A" is arranged on The darkest position of the polarized light source device; in this state, the polarized light source device is visually observed, and in particular, no light spot is observed. -25- (21) (21) 200418637 [Example 2] The antistatic agent trialkyl-2-hydroxyethylammonium was uniformly coated on one side of the absorption polarizing film "Sminka® SRW8 62A" Salt solution, ， S ® is dried to volatilize and remove the solvent to make an absorbent polarizing film with an antistatic layer. The inherent resistance of the surface of the antistatic layer is 6.0 at a voltage of 500V and a time of 10 seconds. χ 109Ω / □; Adopt pressure-sensitive adhesive No. 7 to adhere to the reflective polarizing film "DBEF", and use the anti-static layer of the absorption-type polarizing film with an anti-static layer as the adhesive surface to laminate. Laminated polarizing film; On the reflective polarizing film of this laminated polarizing film, a commercially available protective film of a polyethylene terephthalate film coated with an adhesive on one side is glued to make a protective film Laminated polarizing film; by the same operation as in Example 1, a laminated polarizing film with a single-sided protective film / other surface pressure-sensitive adhesive was produced; after being adhered to a glass plate, the protective film was peeled off by hand. (A) The peeling static voltage on the laminated polarizing film was measured, and (B) the peeling static voltage on the glass plate; the results are shown in Table 1. The peeling static voltage is low and the influence of static electricity is small; the polarizing film is laminated on the adhesive glass plate, and a polarized light source device is manufactured by the same operation as in Example 1; visual observation, especially, no light is observed The point happens. [Example 3] An absorption-type polarizing film "Schminka® SRW862A-NSC" with an antistatic layer formed on one side was prepared; the hardness of the antistatic layer of this film was determined in accordance with JIS K5 600-5-4 "General Test Method for Coatings" Part 5; Mechanical properties of the coating film Section 4: Drawing hardness (pencil method) The standard is evaluated as 2H; -26- (22) (22) 200418637 Pressure-sensitive adhesive No. 7 is glued to the reflection Type polarizing film "DBEF", and an antistatic layer with an antistatic layer absorption type polarizing film is laminated as an adhesive surface to make a laminated polarizing film; a reflective polarizing film of the polarizing film is laminated here In order to make a laminated polarizing film with a protective film, a commercially available protective film of a polyethylene terephthalate film coated with an adhesive on one side was used to make the laminated film; after it was adhered to a glass plate, it was peeled off by hand. Protective film, at this time, measure (A) peeling static voltage on laminated polarizing film, (B) peeling static voltage of glass plate; the results are shown in Table 1, low peeling static voltage and less influence of static electricity; The laminated polarizing film on the board was fabricated into a polarized light source device by the same operation as in Example 1. Observation, in particular, no light spots were observed. [Comparative Example 1] A reflective polarizing film "DBEF", a pressure-sensitive adhesive No. 7, an absorptive polarizing film "Schminka® SRW862A", a sequential layer Laminated to make a laminated polarizing film; on the reflective polarizing film of this laminated polarizing film, a commercially available protective film of a polyethylene terephthalate film coated with an adhesive on one side was adhered to make A laminated polarizing film with a protective film; and a laminated polarizing film with a single-sided protective film / other surface pressure-sensitive adhesive was produced in the same manner as in Example 1. After being adhered to a glass plate, peel it by hand Remove the protective film, at this time, measure the peeling static voltage on the laminated polarizing film (A), (B) the peeling static voltage on the glass plate; the results are shown in Table 1, the peeling static voltage is high, and static electricity occurs; The laminated polarizing film on the glass plate was fabricated into a polarized light source device by the same operation as in Example 1. Observation was made visually, and in particular, it was observed that -27- (23) (23) 200418637 did not occur until the light spot occurred. [Comparative Example 2] A pressure-sensitive adhesive No. 7 was adhered to the reflective polarizing film "DBEF", and in the same manner as the user of Example 3, the surface of the polarizing film with an antistatic layer without an antistatic layer was formed. As the adhesive surface, the laminated polarizing film is made; that is, at this time, the antistatic layer is formed on the outer side of the absorptive polarizing film constituting the laminated polarizing film; the reflection of the laminated polarizing film is formed here Type polarizing film, a commercially available protective film of a polyethylene terephthalate film coated with an adhesive on one side is adhered to form a laminated polarizing film with a protective film; and a pressure-sensitive adhesive 7 Coated on an antistatic layer, and then a commercially available release film made of a polyethylene terephthalate film was glued thereon to make a layer with a single-sided protective film / pressure sensitive adhesive on the other side. Polarized film; after sticking to the glass plate, the protective film was peeled off by hand in the same operation as in Example 1. At this time, the peeling static voltage on the laminated polarizing film was measured (A), and the peeling of the glass plate (B) Static voltage; the results are shown in Table 1. The peeling static voltage is low and the occurrence of static electricity is suppressed. The laminated polarizing film adhered to the glass plate was manufactured in the same manner as in Example 1 to produce a polarized light source device; visual observation showed that light spots due to the antistatic layer occurred. -28- (24) 200418637 Table 1 Example No. (A) laminated polarized light (B) presence or absence of light spot on the side of the glass plate, film-side peeling, electrostatic peeling, static voltage, pressure, Example 1 O.OkV 0.6kV > fnT- Example 2 -0.8kV -3.OkV inL. Example 3 -1. OkV -1.7kV Comparative Example 1 -4.7kV • 8.6kV Μ Comparative Example 2 -0.3kV -0.9kV The laminated polarizing film of the present invention, With anti-static function, when the protective film is peeled off and removed, static electricity is rarely generated; and, the defects caused by the anti-static layer do not affect the display, and can maintain good display quality. [Brief Description of the Drawings] (Figure 1) A cross-sectional view showing an example of the basic constituent layers of a laminated polarizing film of the present invention. (FIG. 2) A cross-sectional view of a pressure-sensitive adhesive disposed in a constituent layer of a laminated polarizing film of the present invention. -(Fig. 3) is a cross-sectional view of a laminated structure of the antistatic layer in the laminated polarizing film constituting layer of the present invention. (FIG. 4) A cross-sectional view of a layer structure example of a liquid crystal display device. (FIG. 5) A cross-sectional view of another example of the layer structure of the liquid crystal display device. -29- (25) 200418637 [Symbol 10: 2 1: 22: 23: 24: 30: 3 1 > 33: 41: 5 1: 52: 53: 54: 6 1 '64, 61' 68 Ming] Laminated polarizing film reflection type polarizing film absorption type polarizing film antistatic layer pressure-sensitive adhesive liquid crystal element 3 2: transparent electrode liquid crystal layer front absorption type polarizing film light source light guide plate reflecting plate reflector 62: light source device 6 5 · polarizing light source device Liquid crystal display device