TW581887B - Circularly polarizing plate and liquid-crystal display device - Google Patents

Abstract

In each of a pair of right-and left-handed circularly polarizing plates, at least one birefringent layer providing a retardation of a half wavelength is disposed between a polarizer and a birefringent layer providing a retardation of a quarter wavelength. An optical axis of the birefringent layer providing of the half-wavelength retardation intersects an optical axis of the birefringent layer providing the quarter-wavelength retardation. One of the pair of right-and left-handed circularly polarizing plates is provided with the birefringent layers equal in number to the birefringent layers of the other circularly polarizing plate. The birefringent layers in one circularly polarizing plate totally provide a retardation of a quarter wavelength in all or part of a wavelength range of from 200 to 1,000 nm. When the birefringent layers included in one circularly polarizing plate are numbered from a first layer to an n-th layer in order of distance from the polarizer in the case where the pair of circularly polarizing plates are disposed opposite to each other so that the polarizers included in the circularly polarizing plates respectively are located on the outer sides, each of crossing angles between fast axes of the first layers, between fast axes of the second layers, ..., between fast axes of the n-th layers and between transmission axes of the polarizers in the pair of circularly polarizing plates is in a range of from 80 to 100 degrees.

Description

581887 五、發明說明（1) 本申請案係以日本專利申請案第20 0 1 -2 1 6 1 4 7號為基 礎，將其併入本文為參考資料。 發農之 L·_曼jj^領域 士發明係關於一對右旋及左旋圓偏振板，其於寬廣的波 長乾圍内提供圓偏振光，且其可結合使用而形成高對比 液晶顯示裝置。 、 ^~iLlLM藝之說 關方；各由四分之一波片（quarteriave plate)及偏光梦 之f合物所構成之一對右旋及左旋圓偏振板，迄今為止^ 知一，將各別四分之一波片之光學軸（慢軸或快軸）使用作 2固定系統’而將各別偏光鏡之吸收軸或透射軸（偏光軸） 设置f彼此旋轉9 〇度之組合。關於使用於各對圓偏振板中 之四了之一波片，已知一種由複數個經層合成使雙折射層 之光學轴彼此相交之雙折射層所構成，且於寬廣的波長& 圍内形成圓偏振光之四分之一波片（未經審查之日本專利 公告No· Hei. 5-100114、未經審查之日本專利公告Ν〇· Hei· 11-231132、未經審查之日本專利公告ν〇· 20 0 1 -483 7 等等）。 將右旋及左旋圓偏振板對分別設置於液晶顯示裝置諸如 使用正面阻滯作用（fr〇ntal retardation)幾近零之狀態 之τ型之相對側上，以使用於獲致高對比等等。然而，〜其 有即使係在使用右旋及左旋圓偏振板對，以致左旋圓偏振 光及右旋圓偏振光彼此重疊之情況中，仍幾乎無法形成專581887 V. Description of the invention (1) This application is based on Japanese Patent Application Nos. 20 0 1-2 1 6 1 4 7 and is incorporated herein by reference. Fannong's L. Mann Field of Invention is about a pair of right-handed and left-handed circular polarizing plates, which provide circularly polarized light in a wide wavelength range, and can be combined to form a high-contrast liquid crystal display device. , ^ ~ ILlLM 艺 之 说 方 方; each of a pair of right-handed and left-handed circular polarizing plates composed of a quarter wave plate and a f-composition of polarized dreams. The optical axis (slow axis or fast axis) of the other quarter-wave plate is used as a 2 fixing system, and the absorption axis or transmission axis (polarization axis) of each polarizer is set to a combination of 90 degrees rotated from each other. Regarding one of the four wave plates used in each pair of circularly polarizing plates, it is known that a birefringent layer composed of a plurality of layers that intersects the optical axes of the birefringent layers with each other is formed at a wide wavelength & Quarter-wave plate with circularly polarized light inside (Unexamined Japanese Patent Publication No. Hei. 5-100114, Unexamined Japanese Patent Publication No. Hei 11-231132, Unexamined Japanese Patent Announcement ν〇 · 20 0 1 -483 7 etc.). The right-handed and left-handed circularly polarizing plate pairs are respectively disposed on opposite sides of a τ-type of a liquid crystal display device such as a state in which frontal retardation is almost zero, so as to obtain high contrast and the like. However, even in the case where a pair of right-handed and left-handed circularly polarizing plates is used so that left-handed and right-handed circularly polarized light overlap each other, it is almost impossible to form an exclusive

581887 五、發明說明（2) 色狀態的問 上日可，在Μ 比的降低。 I明之 本發明之 左旋圓偏振 色狀態，且 根據本發 有·· 一偏光 層，及至少 提供四分之 層，以致提 供四分之一 中右旋及左 振板之雙折 雙折射層在 圍内完全提 板對設置成 光鏡係位於 中之雙折射 時，在圓偏 軸之間，… 之間的各交 此外，根 U:當將圓偏振板對裝置於液晶顯示裝置 “X生先洩漏，因而此問題會造成搿 丁目的為製得一對右旋及左旋圓 光及右旋圓偏振光彼此重疊時可形：f “ 其可用於形成高對比的液晶顯示裝ί良好的黑581887 V. Description of the invention (2) Question on the state of color The previous day, the reduction in the ratio of M. The state of the left-handed circularly polarized color of the present invention, according to the present invention, has a polarizing layer, and at least a quarter of a layer is provided, so that a quarter of the right-handed and left-handed birefringent birefringent layers are provided. When the full-plate pairing is set inside the birefringence of the light mirror system, the intersection between the circular deflection axes, ... In addition, the root U: When the circular polarizing plate is mounted on the liquid crystal display device "X 生It leaks first, so this problem will cause Ping Ding to make a pair of right-handed and left-handed circular light and right-handed circularly polarized light that are superimposed on each other can be shaped: f "It can be used to form a high-contrast liquid crystal display device. Good black

::j-對右旋及左旋圓偏振板，其各具 、兄，日提供四分之一波長之阻滯作用二雔二 一提供半波長之阻滞作用，且設置值^射 一波長之阻滯作用之雙折射層之間的雔批鏡與 供半波長之阻滯作用之雙折射層 ：：T 波長之阻滯作用之雙折射層的光學 ^ >人提 方疋圓偏振板對之其中一者設有數目鱼目又i其 射層相等之雙折射層；圓偏振板對^ 2 一圓偏 自20 0至1，0 0 0奈米（nm)之全部或部分2中之 供四分之一波長之阻滯作用；及當在將範 彼此相對，以致分別包含於圓偏振板對=偏振 外側上之情況中，將包含於圓偏振板對之偏 層依距偏光鏡之距離自第一層至第n 各者 振板對中之第一層之快轴之間，在箆— ，在第η層之快軸之間，及在偏光鏡之透射' 角係在自8 0至1 〇 0度之範圍内。 '轴 據本發明，提供一種液晶顯示裝置，复 具有：:: j- For right-handed and left-handed circular polarizing plates, each of them has a retarding effect of a quarter wavelength, and 21 provides a retarding effect of half a wavelength. A pair of mirrors between the retarding birefringent layer and the birefringent layer for half-wavelength retardation :: Optics of a T-wavelength retarding birefringent layer ^ > Pair of circular polarizers One of them is provided with a birefringent layer having the same number of fisheyes and equal emission layers; the pair of circular polarizing plates ^ 2 is circularly biased from all or part of 2 to 2 0 nm (nm). Quarter-wave retarding effect; and when the ranges are opposite to each other so as to be included on the outer side of the circular polarizing plate pair = polarization, the polarizing layer included in the pair of circular polarizing plates depends on the distance from the polarizer From the first layer to the fast axis of the first layer in each of the n-plate pairs, between 箆 —, between the fast axis of the η layer, and the transmission of the polarizer 'angles are from 8 0 To 100 degrees. According to the present invention, a liquid crystal display device is provided.

91115924.ptd 第8頁 581887 五 、發明說明（3) 一液晶單7L ,及一對定義如上，且分別設置於液晶單元之 相對側上之右旋及左旋圓偏振板，以致分別包含於圓偏振 板對中之偏光鏡係位於外側上；其中當將包含在設置於液 晶單7C之相對側上之圓偏振板對之各者中之雙折射層依距 偏光鏡之距離自第-層至第n層編號時，在圓偏振板對中 之第一層之快轴之間，在第二層之快軸之間，…，在 層之快軸之間，及在偏光鏡之透射 80至100度之範圍内。 ) 7令又用係在自 旋I * :=得一對右旋及左旋圓偏振板，其當左 :m =偏振光彼此重疊時可形成良好的愛色 i : m 於形成高對比的液晶顯示裝i。此：以 方止因各圓偏振板所致 、 長側兩者上之2 !振先經由在短波長側及長波 礎。之以-交形而轉變為糖圓偏振光的技術為基 換言之’本發明人熱切 於圓偏振板對中之偏井户夕a °又置成僅使分別包含 顯示裝置的對比降低=透^皮此旋轉9〇度）之液晶 者致之圓偏振光經由在短波長；==因 角的形而轉變為摘圓偏振光，因長側兩 位知，因而破壞透射軸 旳產生其之方位 形‘怒而解決。 乂性。此問題由本發明之 本&明之特徵 具體例的鮮細說明：；：可由以下結合附圖作說明之較佳 •Ptd 91115924 第9頁 58188791115924.ptd Page 8 581887 V. Description of the invention (3) A liquid crystal single 7L, and a pair of right-handed and left-handed circular polarizing plates as defined above and arranged on the opposite sides of the liquid crystal cell respectively, so that they are included in circular polarization respectively The polarizers in the center of the plate are located on the outer side; where the birefringent layer included in each of the circular polarizing plate pairs provided on the opposite side of the liquid crystal sheet 7C is from the first layer to the second layer according to the distance from the polarizer. When n layers are numbered, between the fast axis of the first layer in the pair of circular polarizing plates, between the fast axes of the second layer, ..., between the fast axes of the layers, and the transmission of the polarizer 80 to 100 Within the range. ) 7 orders are also used on the spin I *: = to obtain a pair of right-handed and left-handed circular polarizing plates, which when left: m = polarized lights overlap each other can form a good love color i: m to form a high contrast liquid crystal Display device i. This: It is due to the fact that each of the two circular polarizing plates on the long side is vibrating first on the short wavelength side and the long wave base. It is based on the technology of-cross-shaped and converted into sugar circularly polarized light. In other words, the inventor is eager to align the circular polarizing plate with the central axis a ° and set it to only reduce the contrast including the display device respectively = transparent ^ The circularly polarized light caused by the liquid crystal who rotates 90 degrees) is converted to circularly polarized light at a short wavelength; == due to the shape of the angle, because the two sides are known on the long side, the transmission axis is destroyed to generate its orientation. Shaped 'angered and resolved. By nature. This problem is explained in detail by the characteristics of the present invention & specific examples :: It can be better explained with reference to the following drawings. • Ptd 91115924 page 9 581887

I隹具體例之詳鈿訪明 根據本發明之圓偏振板對係一對右旋及左旋圓偏振板， 各具有·一偏光鏡；一提供四分之一波長之阻滯作用的 二折射層；及至少一提供半波長之阻滞作用，且設置於偏 光鏡與提供四分之一波長之阻滞作用之雙折射層之間的餘 折^層，以致提供半波長之阻滞作用之雙折射層的光學ς 2提供四分之一波長之阻滞作用之雙折射層的光學軸相 乂 j其中右旋及左旋圓偏振板對之其中一者設有數目與另 一圓偏振板之雙折射層相等之雙折射層；圓偏振板對之各 $中之雙折射層在自2 0 0至1，〇〇〇奈米之全部或部分的波長 靶圍内完全提供四分之一波長之阻滯作用；及當在將圓偏 振板對設置成彼此相對，以致分別包含於圓偏振板對中之 偏光鏡係位於外側上之情況中，將包含於圓偏振板對之各 t中之雙折射層依距偏光鏡之距離自第一層至第n層編號 日可，在圓偏振板對中之第一層之快軸之間，在第二層之快 軸之間，…，在第n層之快軸之間，及在偏光鏡之透s射軸、 之間的各交角係在自8 0至1 0 0度之範圍内。 在圖1中，兀件編號1指示右旋及左旋圓偏振板對之其中 一者；2指示右旋及左旋圓偏振板對之另一者；丨丨及2 /指 示偏光鏡’ 1 2、1 3、2 2及2 3指示各提供半波長之阻滯作 之雙折射層；及1 4及2 4指示各提供四分之一波長之阻滯 用之雙折射層。附帶一提，圖1顯示將圓偏振板對應用印至乍 液晶顯示裝置之情況。元件編號3指示液晶單元。 如圖1所不，右旋及左旋圓偏振板對丨及2之各者包括偏I. Details of specific examples: The pair of circularly polarizing plates according to the present invention is a pair of right-handed and left-handed circularly polarizing plates, each having a polarizer; a birefringent layer that provides retardation of a quarter wavelength ; And at least one layer providing a half-wavelength retarding effect and being disposed between a polarizer and a birefringent layer providing a quarter-wavelength retarding effect, so as to provide a half-wavelength retarding effect Optical layer 2 of the refractive layer 2 provides a quarter-wave retardation of the optical axis of the birefringent layer. The number of right-handed and left-handed circularly polarizing plates is equal to that of the other circularly polarizing plate. Equal birefringent layers; the birefringent layers of each pair of circular polarizing plates provide a quarter-wavelength resistance within all or part of the wavelength target range from 2000 to 1,000 nanometers Retardation; and the birefringence included in each t of the circularly polarizing plate pair when the circularly polarizing plate pairs are arranged to face each other so that the polarizers respectively included in the circularly polarizing plate pair are located on the outside. Layers are numbered from the first layer to the nth layer from the polarizer OK, between the fast axis of the first layer in the pair of circular polarizers, between the fast axis of the second layer, ..., between the fast axis of the nth layer, and the transmission axis of the polarizer The intersection angles between and are in the range from 80 to 100 degrees. In FIG. 1, element number 1 indicates one of the right-handed and left-handed circular polarizing plate pairs; 2 indicates the other one of the right-handed and left-handed circular polarizing plate pairs; 丨 丨 and 2 / indicating polarizer '1 2, 1 3, 2 2 and 23 indicate birefringent layers each providing a half-wavelength retardation effect; and 1 4 and 24 indicate birefringent layers each providing a quarter-wavelength retardation effect. Incidentally, FIG. 1 shows a case where a circular polarizing plate is applied to a liquid crystal display device. Element number 3 indicates a liquid crystal cell. As shown in Fig. 1, each of the right-handed and left-handed circularly polarizing plate pairs 丨 and 2 includes polarized

581887 五、發明說明（5) 光鏡1 1或2 1，提供四分之一波長之阻 或24，及一或二或多個各提供=:作用之雙折射層Η ^12^3^2,23 光鏡11或21與雙折射層“或24之間， 或22及23之光學轴與提供四分之一波長之阻滯作用之雙 射層1 4或24之光學軸相交。右旋及左旋圓偏振板對之= 一者設有數目與另一圓偏振板之雙折射層相等之雙折^ 層’以致包含於右旋及左旋圓偏振板對之各者中之 雙折射層在自2 0 0至丨，0 0 0奈米之全部或部分的波長範圍内 完全提供四分之一波長之阻滯作用。 可對構成各圓偏振板之偏光鏡及雙折射層使用適當的材 料。材料之種類並無特殊之限制。附帶一提，可將^透射 線性偏振光，但吸收其他光之適當材料使用於偏光鏡。偏 光鏡之材料的例子包括：經由於使峨及/或二色染料吸附 於親水性聚合物薄膜，諸如聚乙烯醇基薄膜、部分甲盤化 聚乙烯醇基薄膜或乙烯—乙酸乙烯酯共聚物基部分皂化薄 膜上之後，將親水性聚合物薄膜拉伸而製得之偏光薄膜； 及以前述方式製得，且具有一用於保護偏光薄膜之相對表 面之一面或各面之透明保護層的偏光薄膜。 透明保護層可由適當的聚合物形成。尤其，透明保護層 可由透明度、機械強度、熱安定性、及濕氣密封性優異的 聚合物形成較佳。透明保護層可利用適當的方法，諸如塗 布聚合物液體之方法或黏合及層合供做為薄膜之材料之方 法形成。 _ 第11頁 \\326\2d-\91-10\91115924.ptd 581887 五、發明說明（6) 附帶-提’聚合物之例子包括：、 —〜-'— 乙，基纖維素、及三乙醯基纖維素纖f素基聚合物諸如二 對本二甲酸乙二·、聚蔡二甲酸乙，Λ“旨基聚合物諸如聚 如聚乙烯、聚丙烯、環基或去甲法烯烴基聚合物諸 丙山稀共聚⑯；酿胺基聚合物諸：構聚埽烴、及乙婦 聚妷酸酯基聚合物；丙烯醯基聚A也’、及芳族聚醯胺； 酿；及苯乙稀基聚合物諸如聚苯=諸如聚甲基兩烯酸甲 共聚物。 ％、及丙歸腈〜笨乙浠 :於形成透明保護層之聚合物 j合:勿；硬基聚合物；聚 聚：：更包括：醯亞胺基 聚亞苯基硫喊基聚合物；乙二2;聚_網基聚合 ς r:物；聚甲醛基聚合物；環氣‘ f聚合物；烯丙酸酯 二聚：物；前述聚合物之播混：乳=物;、乙烯縮丁駿 t小合物’肖如聚酯基聚合物：’曰熱或紫外輻射硬 T旨基聚合物、醯胺基聚合::、2細醯基聚合物、胺基 ”纖；素薄膜較佳了使用各向同性優異之薄膜諸如= 2材料取向:經由將折射率各向 礎材科塗布折射率及經由將各向同性或 而以r:材:射 ί :之另向列液晶聚合：、=7盤型⑷sc〇t】c)液晶、 -__ 丁適备取向程序之薄膜所構成的 \\326\2d.\9J-J0\9JI15924.ptd 第】2頁 581887 五、發明說明（7) 又折射層’諸如由盘用 形成的星舢七雒；形成透明保護層相同之聚人物所 為聚合物薄膜。雙折射層之另:; 拉伸力。= 提供收縮力及/或 佳。 （透先革）優異的雙折射層為較 由抑制因應力所致之阻滯作用改變之觀 又折射層係經形成為使以波長633奈米之光看，較佳的 =之光彈性係數不大於5χ 1〇_n平 ：：準之二斤 /、、 頓之雙折射層。由得到光彈性係數之勸载步主… 以上所列之液晶材料形成的雙折射層為 ：“看， 雙折射層之光彈性係數-般為小，因而由偏此等 造成之阻滯作用的變化或快軸的變化太小，支形所 降低。在由聚合物薄膜形成之雙折射層中，由雔二f對比 雙折射之波長相關性、雙折射層之光彈性係數又子層之 在雙折射層與用於層合之黏著劑之間之折= 抑制由 界面反射的觀點來看，使用烯烴基聚射：J成之 烯基聚合物、乙酿基纖維素基聚合物、 2 去甲乾 基聚合物等等為較佳。 ♦甲基丙細醆甲酯 關於雙折射層，結合使用提供四分之一 之雙折射層及提供半波長之阻滯作用之抽^ ^阻滯作用 層之組合在自2 0 0至1，0 0 0奈米之全部或部八6 :，折射 完全提供四分之一波長之阻滯作用。 二π /範圍内 钍此情況，將提佴半581887 V. Description of the invention (5) Optical mirror 1 1 or 21, providing a quarter-wave resistance or 24, and one or two or more each providing =: functioning birefringence layer ^ 12 ^ 3 ^ 2 , 23 Between the optical lens 11 or 21 and the birefringent layer "or 24, or the optical axis of 22 and 23 intersects the optical axis of the birefringent layer 14 or 24 that provides a quarter-wave retardation. Right-handed And left-handed circularly polarizing plate pair = one is provided with birefringent layers equal to the number of birefringent layers of the other circularly-polarizing plate, so that the birefringent layer included in each of the right- and left-handed circularly polarizing plate pairs is A quarter wavelength retardation is fully provided in the whole or part of the wavelength range of 2000 to 1000 nanometers. Appropriate materials can be used for the polarizers and birefringent layers constituting each circularly polarizing plate. There are no special restrictions on the type of material. Incidentally, suitable materials that can transmit linearly polarized light, but absorb other light, are used in polarizers. Examples of materials for polarizers include: Dyes are adsorbed on hydrophilic polymer films, such as polyvinyl alcohol-based films, partially formiclated polyvinyl alcohol-based films A polarizing film prepared by stretching a hydrophilic polymer film after saponifying a film or an ethylene-vinyl acetate copolymer-based partially saponified film; and a polarizing film prepared in the foregoing manner and having an opposite surface for protecting the polarizing film A polarizing film with a transparent protective layer on one or each side. The transparent protective layer may be formed of a suitable polymer. In particular, the transparent protective layer may be formed of a polymer having excellent transparency, mechanical strength, thermal stability, and moisture-tightness. The transparent protective layer can be formed by an appropriate method, such as a method of coating a polymer liquid or a method of bonding and laminating for use as a film material. _ Page 11 \\ 326 \ 2d- \ 91-10 \ 91115924.ptd 581887 V. Description of the invention (6) Examples of incidental-extracting polymers include :,-~ -'- ethyl cellulose, and triethyl cellulose cellulose cellulose-based polymers such as ethylene di-p-diacetate. Polyethylene terephthalate, Λ "polymers based on polymers such as polyethylene, polypropylene, cyclic or norbornene-based polymers such as propylene diene copolymers; amine-based polymers: polymerized hydrocarbons And women's gathering Acetate-based polymers; acrylic acryl-based polyA ', and aromatic polyamines; alcohols; and styrene-based polymers such as polyphenylene such as polymethyldienoic acid methyl copolymers. %, And acetonitrile ~ benzidine: polymer used to form a transparent protective layer; do not; hard-based polymer; polypoly :: further includes: 醯 imide polyphenylene sulfide polymer; Ethylene 2; Poly-Net-Based Polymerization; r: polymers; polyoxymethylene-based polymers; ring gas' f polymers; allylic acid dimers: polymers; blending of the aforementioned polymers: milk = polymers; Ding Jun's small compound 'Xiaoru polyester-based polymer:' said thermal or ultraviolet radiation hard T-based polymer, fluorene-based polymer ::, 2 fluorene-based polymer, amine-based fiber; prime film is better Use of a film with excellent isotropy such as = 2 material orientation: by coating the refractive index isotropically with the base material section and by isotropic or using r: material: radiation: other nematic liquid crystal polymerization:, = 7 Disc type ⑷sc〇t] c) \\ 326 \ 2d. \ 9J-J0 \ 9JI15924.ptd composed of a liquid crystal and a thin film with an orientation program prepared by _326] Page 2 581887 5. Description of the invention (7) Refraction Layers, such as the star 舢 舢 formed by the disk; the polymer film made of the same polymeric characters as the transparent protective layer. The other of the birefringent layer :; tensile force. = Provides contraction force (Or better.) The excellent birefringent layer is better than the one that suppresses the change in retardation caused by stress. The refractive layer is formed so that it is better to see with a wavelength of 633 nanometers. The photoelastic coefficient is not greater than 5χ 1〇_n flat :: Bi-refractive layer of quasi-two pounds / ounces. The birefringent layer formed from the liquid crystal materials listed above is : "Look, the photoelastic coefficient of the birefringent layer is generally small, so the change in the retardation caused by this or the change in the fast axis is too small, and the branch shape is reduced. In the birefringent layer formed by a polymer film, the wavelength dependence of birefringence is compared by the second f, the photoelastic coefficient of the birefringent layer, and the sublayer between the birefringent layer and the adhesive used for lamination. From the viewpoint of suppressing reflection from the interface, it is preferable to use an olefin-based polyemission: an olefin-based polymer of J, a cellulose-based polymer based on ethyl alcohol, a polymer based on 2 nor-methyl, and the like. ♦ Methyl methyl succinate methyl ester About the birefringent layer, a combination of a quarter-birefringent layer and a half-wavelength retarding effect is used. The combination of the retarding effect is from 200 to 1, All or part of 0 0 0 nanometer 6: Refraction completely provides a quarter wave retardation. Within 2π / range 钍 In this case, it will increase by half

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五、發明說明（9) 内之另一波長提供半波县 尤其係複數個雙折射； 二乍用之至 >、一雙折射層， 折射層之光學軸之1 = ί種組合層合時，或當改變雙 一波長之阻滞作用之雙: 述波長範圍之部分内P徂 v 、、且5 。附可一提，在於前 射層之組合的情況中由'『§ H —波長之阻滯作用之雙折 波長範圍不小热ώ。中由娟不特性的觀點來看，此部分之 佳Γ卢苴户^丨；00至L 000奈米之波長範圍的50%較 佳二不小於6〇% ’更尤其係不小於7〇%。 板圓作為右旋及左旋圓偏振 阻滞作用之雙：：】的==:::-提r波長之 折射層的光學軸與提供\ 長之阻颅作用之雙 層的光學爾。；=:::皮長之阻滯作用之雙折射 八則々八〜门田在將®偏振板對設置成彼此相對，以 刀】匕3方；圓偏振板對中之偏光鏡係 :二包：於；偏振板對之各者中之雙折射層二 声之：i:;;，編號時，在圓偏振板對中之第二 曰之决軸之間，在弟二層之快軸之間，.. 軸之間’及在偏光鏡之透射軸之間的各交角：：自層之快 100度之範圍内，尤其係在自85至95度之範 至V. Description of the invention The other wavelength in (9) provides half-wave counts, especially for multiple birefringences; for the first time > a birefringent layer, the optical axis of the refracting layer 1 = when the combination is laminated , Or when changing the retardation effect of the dual wavelength: P 徂 v, and 5 in the part of the wavelength range. It can be mentioned that in the case of the combination of the front layers, the "" § H-the double fold of the retardation of the wavelength, and the wavelength range is not small. From the point of view of Juan's non-characteristics, this part is better. Lu 50% of the wavelength range from 00 to L 000 nm is preferably not less than 60%, and more particularly not less than 70%. . The plate circle serves as the double of right-handed and left-handed circular polarization retardation ::] == :::-Raises the optical axis of the refractive layer of the wavelength and the optical layer of the double layer that provides the long-distance skull effect. ; = ::: Double-refraction of the retardation effect of the skin length 々 八 々 ～ Manda is setting the ® polarizing plate pair to face each other with a knife] 3 squares; the polarizing lens system of the circular polarizing plate centering: 2 Package: Yu; The birefringent layer in each of the pair of polarizing plate pairs: i: ;;, when numbering, between the second axis of the circular polarizing plate pair and the fast axis of the second layer Between, .. between the axes' and the angles of intersection between the transmission axes of the polarizers: within the range of 100 degrees from the layer, especially in the range from 85 to 95 degrees

提’在相狀雙折射層之快轴之間及在偏錢之透=-間的相交關係亦可被在相對之雙折射層之慢軸之間及U 3δ1〇〇 / 五、發明說明（10) 光鏡之吸收軸之間的相交關係取 相交關係可達成如下。告 戈。 之角度，根據待設置之雔二 θ 0係偏光鏡之吸收軸 (η - 1)係提供车、*且—R 射層之數目’ 0 1、…、及0 、li w丨了促1、牛波長之阻滯 角度，及θ η係提供四分之_ 之又折射層之慢軸的各別 之慢軸的角度時，在提供丰、之阻滯作用之雙折射層 之慢軸之角度及提供四之f ^之阻滯作用之各雙折射層 之慢軸之角度係分別由以 f長之阻滯作用之雙折射層 形成一個圓偏振板。 示式1及2所決疋之條件下 表示式1 : Θ 0 2x 0(n〜2) + θ(π-1)或 2χ 0(卜 2) κη —" 2 x 0(η〜ΐ) + 45 度或 2 X <9 (η- 1 X Θ 1 表示式2 Θ 0 + 45度 00-2x01 於將自80至1〇〇度之角度加至於一— ^ 吸收軸之各角度及雙折射層之阻滯輛之尤兄 度進行因轉換所致之校正的條件下 又 在十角 1丄 ]惊仵下形成另一圓偏振板。 附可- & “列如’將一層使用作為提供半波長之阻滯 作用之雙折射層時’由表示^將於_圓偏振板中之提供 半波長之阻冰作用之雙折射層之慢軸的角度計算為θ 〇 + 0 1或0 0- 0 1。由表示式2將提供四分之一波長之阻滯作 用之雙折射層之慢軸的角度相對地計算為θ 〇 + 2 X 0 1+45 度或0 0 - 2 X 0 1 -4 5度。在此情況，偏光鏡之吸收軸之角The intersecting relationship between the fast axes of the phase-like birefringent layers and the transmission of partial money =-can also be between the slow axes of the opposite birefringent layers and U 3δ100 / 5. Explanation of the invention ( 10) The intersecting relationship between the absorption axes of the light mirror can be achieved as follows. Go. The angle is based on the absorption axis (η-1) of the two θ 0-type polarizers to be set. The number of vehicles and the number of R-transmitting layers' 0 1, ..., and 0, li w 丨 is promoted 1. The angle of retardation at the wavelength of ox, and θ η are the angles of the slow axis of the slow axis of the refraction layer which provides one-fourth of the angle of the slow axis of the refraction layer. And the angle of the slow axis of each birefringent layer which provides the retardation effect of f ^ is a circular polarizing plate formed by the birefringence layer with retardation effect of f length. Expression 1 under the conditions determined by Expressions 1 and 2: Θ 0 2x 0 (n ~ 2) + θ (π-1) or 2χ 0 (b 2) κη — " 2 x 0 (η ～ ΐ) + 45 degrees or 2 X < 9 (η- 1 X Θ 1 expression 2 Θ 0 + 45 degrees 00-2x01 add the angle from 80 to 100 degrees to one — ^ each angle of the absorption axis and double Under the condition that the retardation of the refracting layer is corrected due to conversion, another circular polarizing plate is formed under the condition of ten angles 1 仵]. Attached-& "Lieru 'uses a layer as a provision When the half-wavelength retarding birefringent layer is used, the angle of the slow axis of the birefringent layer that provides the half-wavelength anti-icing effect in the circular polarizing plate is calculated as θ 〇 + 0 1 or 0 0- 0 1. From Equation 2, the angle of the slow axis of the birefringent layer that provides retardation of a quarter wavelength is relatively calculated as θ ＋ 2 X 0 1 + 45 degrees or 0 0-2 X 0 1- 4 5 degrees. In this case, the angle of the absorption axis of the polarizer

91115924.ptd 第16頁 581887 發明說明（11) =〇。係視需要而定，及角“1係在自5至25度之範圍内 另一方面，當例如，將兩層 作用之雙折射層時，分別由表示 為提供半波長之阻滯 提供半波長之阻滯作用之第_:於圓偏振板中之 度計算為0 0+ θ 1或0 0- 0 1 (第一^雙折射層之慢軸的角 Θ0 - 2x 第二層）。由夺一曰及0〇 + 2x 01+02或 ^^^^( ^)^J；2f ^ ^^^ 為ΘΟ + 2χ 0ΐ+2χ Θ2 + 4 5度或二_?又Λ、角又相對地叶异 在此情況’偏光鏡之吸收軸之角Χ 1 2x0 2-45度。 角度ΘΚΘ2係分別在自5至之 定，及 度之範15度之㈣内及在自1〇至30 此外，當將三層使用作為提供半波長之阻滞作用之雙折 射層時，分別由表示式1將於—圓偏振板中之提供半波長 之：滯作用之第一、第二、及第三雙折射層之慢軸的角度 s 十异為 00+01 或 Θ0-Θ1(第一層）' 0〇 + 2X 01+02 或 θ〇-2χ 01-Θ2(第二層）及 θ〇 + 2χ Θ1+2χ Θ2+03 或 Θ0 -2χ Θ1-2x 02-03(第三層）。由表示式2將提供四分之 波長之阻w作用之（苐四）雙折射層之慢軸的角度相對地 計算為 0〇 + 2x 01+2x 02 + 2x 03+45 度或 0〇-2x 01 - 2 X (92-2χ Θ3-45度。在此情況，偏光鏡之吸收軸之角度 Θ 0係視需要而定，及角度0 1、0 2、及Θ 3係分別在自1 至10度之範圍内、在自10至30度之範圍内、及在自20至60 度之範圍内較佳。91115924.ptd page 16 581887 Description of the invention (11) = 〇. It depends on the need, and the angle "1 is in the range from 5 to 25 degrees. On the other hand, when, for example, two layers of birefringent layers are used, the half-wavelength is provided by the retardation expressed as a half-wavelength, respectively. The first of the retarding effects: The degree in the circularly polarizing plate is calculated as 0 0+ θ 1 or 0 0- 0 1 (the angle of the slow axis of the first ^ birefringent layer θ0-2x second layer). One day and 0〇 + 2x 01 + 02 or ^^^^ (^) ^ J; 2f ^ ^^^ is Θ0 + 2χ 0ΐ + 2χ Θ2 + 4 5 degrees or two_? And Λ, angle and relative to the ground In this case, the angle of the absorption axis of the polarizer X 1 2x0 2-45 degrees. The angles ΘΚΘ2 are within the range from 5 to 15 degrees, and within the range of 15 degrees from 10 to 30. In addition, when When three layers are used as a birefringent layer that provides a half-wave retardation, the half-wavelength that is provided in the circular polarizing plate by Expression 1 will be: the first, second, and third birefringence of the retardation The angle s of the slow axis of the layer is ten different: 00 + 01 or Θ0-Θ1 (first layer) '0〇 + 2X 01 + 02 or θ〇-2χ 01-Θ2 (second layer) and θ〇 + 2χ Θ1 + 2χ Θ2 + 03 or Θ0 -2χ Θ1-2x 02-03 (third layer). Represented by 2 Relatively calculate the angle of the slow axis of the (fourth) birefringent layer that provides a quarter-wavelength resistance w effected as 0〇 + 2x 01 + 2x 02 + 2x 03 + 45 degrees or 0〇-2x 01-2 X (92-2χ Θ3-45 degrees. In this case, the angle Θ 0 of the absorption axis of the polarizer is as needed, and the angles 0 1, 0 2, and Θ 3 are in the range from 1 to 10 degrees, respectively. Within, within a range from 10 to 30 degrees, and within a range from 20 to 60 degrees are preferred.

91115924.ptd 第17頁 581887 、發明說明（12) 附帶一提， 簡單地置於彼 的觀點來看， 位：移所致之品 效率的觀點來 佳。 黏合程序可 黏劑之方法進 不需任何供硬 化及乾燥程序 特性改變較佳 料之折射率中 若須要，可 板可透過黏著 暴露至表面時 以提供保護作 時為止。當形 可將材料之暴 材料不受損壞 可將根據本 種用途。可將 顯示裝置，諸 之狀態的τ型 振板對1及2分 各圓偏振板中之偏光鏡及各別的雙折射層可 此之上，或由防止光學軸位移及被灰塵污染 可將其彼此黏合較佳。除了因防止光學轴之 質穩定化之外，由改良組裝液晶顯示裝置之 看，形成各圓偏振板之材料的整體層合亦較 利用適當 行。黏著 化及乾燥 之黏著劑 0此夕卜， 間之折射 將黏著層 層而黏合 ，可將黏 用，諸如 成各圓偏 露表面黏 〇 發明之圓 圓偏振板 如尤其使 較佳。液 別設置於 的方法 劑之種 用之向 ，以防 使用具 率的黏 設置於 至諸如 著層之 抗污染 振板之 著覆蓋 偏振板 對使用 用其中 晶顯示 液晶單 ’諸如 類並益 溫程序 止偏光 有在待 著劑於 各圓偏 液晶單 暴露表 ’直至 其中一 表面保 使用透明 特殊之限 ’亦不需 鏡及雙折 透過黏著 抑制界面 振板上， 元之物體 面暫時覆 將黏著層 材料暴露 護薄膜， 黏著劑或增 制。使用既 任何長期硬 射層之光學 劑層合之才才 反射較佳。 以致圓偏振 。當黏著層 蓋隔離物， 作實際使用 至表面時， 以致可保護 對使用於根據相 於形成可獲致高 之正面阻滯作用 裝置可以將右旋 元3之相對側上， 關技藝之各 對比之液晶 實質上為零 及左旋圓偏 以致分別91115924.ptd p. 17 581887, invention description (12) Incidentally, it is simply put in the other's point of view, the position: the efficiency of the product caused by the shift is better. The bonding process can be performed by the adhesive method without any hardening and drying process. The characteristics of the material are better. If necessary, the plate can be exposed to the surface through adhesion to provide protection. The material can be violent when the material is not damaged can be used according to this purpose. The display device, the state of the τ-type vibration plate, the polarizers and the respective birefringent layers in each of the circular polarizing plates of 1 and 2 points can be placed on it, or by preventing the optical axis from being displaced and being contaminated by dust. They adhere better to each other. In addition to preventing the quality of the optical axis from being stabilized, from the viewpoint of improving the assembly of the liquid crystal display device, the overall lamination of the materials forming the circular polarizing plates is also more suitable. Adhesion and drying of adhesives. At this time, the refraction between layers will adhere to each other and can be adhered, for example, to form circularly exposed surfaces. The circularly polarizing plate of the invention is particularly preferred. The purpose of the method is to prevent the sticking of the method. It is used to prevent the contamination of the anti-pollution vibration plate such as the coating layer. The polarizing plate is used to display the liquid crystal monolithic crystals. The program depolarizing light is to wait for the agent to be exposed to each circularly polarized liquid crystal single exposure table 'until one of the surfaces is guaranteed to be transparent and special.' There is also no need for mirrors and double folds to pass through the adhesion suppression interface vibration plate. The object surface of the element is temporarily covered. The adhesive layer material exposes the protective film, adhesive or additive. The reflection is better only when the optical agent is laminated with any long-term hard-emitting layer. So that circular polarization. When the adhesive layer covers the spacer for actual use to the surface, so that the protection can be used on the opposite side of the right-handed element 3, which can be used in accordance with the formation of a positive blocking effect that can be obtained. The liquid crystal is substantially zero and left-handed so that

581887 五、發明說明（13) 包含於圓偏振板對1及2中之偏光鏡丨丨及21係位於外側上之 方式形成，例如，如圖1所示。 田在將圓偏振板對丨及2以前述方式設置於液晶單元3之 』對側上之情況中，將包含於圓偏振板對丨及2之各者中之 二折射層依距偏光鏡之距離自第一層至第n層編號時，將 員偏振，對1及2中之雙折射層及偏光鏡設置成使在圓偏振 反對之第一層1 2及2 2之快軸（慢軸）之間，在第二層1 3及2 3 之快軸（慢軸）之間，在第三層14及24之快軸（慢軸）之 f/…，在第η層之快軸（慢軸）之間，及在偏光鏡之透射 :/及收軸）之間的各交角係在自8 0至1 〇 〇度之範圍内，尤 ”係在自8 5至9 5度之範圍内。藉由此設置，可獲致高對比 的顯示器。 ΑI將ΐ用Ϊ據本發明之圓偏振板對之液晶顯示裝置形成 二u又有二光單元之透射液晶顯示裝置，或可形成為於其之 ^面t a又有反射層之反射液晶顯示裝置。此外，可將液晶 顯不^置形成為於液晶單元之側面上設有光源及於其之背 =ΐ ]又有，射層之外部光/照明雙重型液晶顯示裝置。在 t h況可^將液晶顯示裝置形成為於照明模式（透射顯示 f )中'μ有冋對比’及於外部光模式（反射顯示器）中於整 個可見光區域上具有優異的顯示特性。 可f =眩光層或抗反射層設置於在液晶顯示裝置中設置 在液晶早7L之视覺側上之圓偏振板的表面上。設置防眩光 】:系ί ::吏由其之表面所反射之外部光散射。言交置抗反射 曰糸、Ρ制外部光之表面反射。藉由防眩光層或藉由抗581887 V. Description of the invention (13) The polarizers 丨 and 21 included in the circular polarizing plate pairs 1 and 2 are formed on the outside, for example, as shown in FIG. 1. In the case where Tian circular polarizing plate pairs 丨 and 2 are arranged on the "opposite side" of the liquid crystal cell 3 in the foregoing manner, the birefringent layer included in each of the circular polarizing plate pairs 丨 and 2 is distanced from the polarizer. When the distance is numbered from the first layer to the nth layer, the polarization of the members is set, and the birefringent layers and polarizers in 1 and 2 are set so that the fast axes (slow axes) of the first layers 12 and 2 2 which are opposed to circular polarization ), Between the fast axis (slow axis) of the second layer 1 3 and 23, the f / ... of the fast axis (slow axis) of the third layer 14 and 24, and the fast axis of the η layer ( (Slow axis), and between polarizing lens transmission and / or closing axis) are in the range from 80 to 100 degrees, especially in the range from 85 to 95 degrees With this arrangement, a high-contrast display can be obtained. AI will use a circular polarizing plate according to the present invention to form a liquid crystal display device with two u and two light units, or it can be formed in Its surface ta has a reflective liquid crystal display device with a reflective layer. In addition, the liquid crystal display can be formed so that a light source is provided on the side of the liquid crystal cell and its back = ΐ] , The external light / illumination dual-type liquid crystal display device of the light emitting layer. In the th condition, the liquid crystal display device can be formed into a 'μ contrast' in the illumination mode (transmission display f) and in the external light mode (reflective display). It has excellent display characteristics in the entire visible light region. F = glare layer or anti-reflection layer can be provided on the surface of a circular polarizing plate provided on the visual side of the LCD 7L in the liquid crystal display device. Set anti-glare]: Department ί :: Scattering of external light reflected by its surface. Intersection of anti-reflection means surface reflection of external light, P. By anti-glare layer or by anti-glare layer

91115924.ptd91115924.ptd

第19頁 581887 五、發明說明（14) 氺!^ ί目"I防止表面反射光成為傷害透射通過顯示裝置之 者，：乂玆C t眩光。因此’可設置防眩光層及抗反射層兩 可蔣防日:ί到防止表面反射光傷害可見度的較大改良。 展H 或抗反射層形成為展現前述功能之適當 i气射:特殊之限制。Ρ付帶一提，可將防眩光層形成 法月由+井^細粗才造結構。抗反射層可利用適當的塗布方 / 潯朕（諸如折射率不同之無機氧化物之多層塗膜） =斤射率材料(諸如說基化合物)之塗膜形 布 氣沈積方法諸如真空蒸氣沈積方法、 iiili法、输方法；電鑛…及溶膠方法。 X 1 U千方未/牛頓之光彈性係數之丨〇〇微米厚之 稀基樹脂薄膜（JSR Corporatl〇n製造之甲& =拉細’因而製得相對於波長55〇奈米之 /=;)膜且。就雙折射光而言提供半波長之阻滞作用= 參考貫施例2 以與參考實施例1相同之方式將相同 茂 ==。因而製得提供四分之一波長:阻 參考貫施例3 將具有8χ 1〇-n平方米/牛頓之光彈性係數 之聚碳酸醋薄膜在15(TC下拉伸5%，因而製得提供；= 91115924.ptd 第20頁 581887 五、發明說明（15) 之阻滯作用的；I / 2拉伸薄膜。 春考實施例4 以y…考貝知例3相同之方式將相同的聚碳酸酯薄膜 伸2.5%，目而製得提供㈤分之一波長之阻滯作㈣又/4拉 伸薄膜。 實施例1 使=參考實施例i中製得之λ/2拉伸薄膜及於參考實施 例2中* #之又/ 4拉㈣料過黏著層層合於彼此之上， 以:之光學軸（慢軸）以62· 5度角彼此相交 '然後透過 黏者層將偏光鏡（Nitto Denko C0rp〇rati〇n製造之 NPF-HEG1 425DU)層合於"2拉伸薄膜上。如此製得右旋圓 偏振板。t將偏光鏡之吸收軸視為〇度時，又/2拉伸薄膜 之慢抽成為17.5度，及又/4拉伸薄膜之慢轴成為8〇度。、 另一方面，以如前所述之相同方式製得左旋圓偏振板， 矛、了將所有的光學軸設為與前述的光學軸垂直相交。換士 之’當將偏光鏡之吸收軸視為9〇度時，"之； 軸成為1〇7.5度’及"4拉伸薄膜之慢軸成為17〇】膜二又 一 k，在各右旋及左旋圓偏振板中，λ /2 拉㈣膜之層合物在自2 0 0至U0。奈米之全二二4 内提供四分之一波長之阻滯作用。 實施例2 板以同之方式製得一對右旋及左旋圓偏振 取向：固二:Ϊ Ϊ ί左旋圓偏振板中之λ /4拉伸薄膜以由 口 疋成日日斌6物形成，且提供四分之一波長之阻滯 9Π 15924.ptd 第21頁 581887 五、發明說明（16) 作用的；I /4薄膜取代。；I /4薄膜之光彈性係數為i X 平方米/牛頓。在各右旋及左旋圓偏振板中，又 0 11 膜及；1/4薄膜之層合物在自2〇〇至丨，〇〇〇奈米之全伸薄 範圍内提供四分之一波長之阻滞作用。 、波長 比較實施例1 以與實施例1相同之方式製得一對右旋及左旋圓偏 板，除了將左旋圓偏振板形成為當將偏光鏡之 χ 度時，"2拉伸薄膜之慢軸及"4拉伸薄 = 成為度及8。度，換言之，僅有使偏光鏡； 〇度或90度之差異。 边町袖成為Page 19 581887 V. Description of the invention (14) 氺! ^ I prevent the reflected light on the surface from harming those who have transmitted through the display device: Cz glare. Therefore, an anti-glare layer and an anti-reflection layer may be provided. Jiang Fangri: To a great improvement in preventing visibility of reflected light from hurting the surface. The development H or the anti-reflection layer is formed so as to exhibit appropriate functions of the aforementioned functions. As mentioned in the PP belt, the anti-glare layer can be formed from the structure of ++ ^^. The anti-reflection layer can be applied by an appropriate coating method (such as a multilayer coating film of inorganic oxides having different refractive indexes) = a coating film-shaped gas deposition method such as a vacuum vapor deposition method of a material having a high emissivity (such as a base compound). , Iiili method, transmission method; power ore ... and sol method. X 1 U Chin Fang / Newton's photoelastic coefficient of 〇00μm-thin thin-based resin film (formerly made by JSR Corporatl & = pulled down) thus making 55 / nm relative to the wavelength / = ;) Film and. In terms of birefringent light, a half-wavelength retarding effect is provided = Reference Example 2 will be the same in the same manner as Reference Example 1 ==. Thus, a quarter-wavelength was provided: Reference Example 3 A polycarbonate film having a photoelastic coefficient of 8 × 10-n m / Newton was stretched at 15 ° C and 5%, so ; = 91115924.ptd page 20 581887 5. The invention's description of the retarding effect of (15); I / 2 stretched film. Spring test example 4 In the same way as y ... test case 3 the same polycarbonate The ester film was stretched by 2.5%, and a retardation film with a wavelength of one-half as a ㈣ / 4 stretched film was prepared. Example 1 Makes the λ / 2 stretched film prepared in Reference Example i and referred to In Example 2 * # 之 又 / 4 ㈣ material is laminated on top of each other, and the optical axis (slow axis) intersects each other at an angle of 62.5 degrees, and then the polarizer ( The NPF-HEG1 425DU (manufactured by Nitto Denko Corporation) was laminated on the "2" stretched film. This produced a right-handed circularly polarizing plate. When the absorption axis of the polarizer was regarded as 0 degrees, it was / 2 again. The slow drawing of the stretched film becomes 17.5 degrees, and the slow axis of the / 4 stretched film becomes 80 degrees. On the other hand, a left-handed circular polarization is obtained in the same manner as described previously. , Spear, set all the optical axes perpendicular to the aforementioned optical axis. In other words, 'when the absorption axis of the polarizer is regarded as 90 degrees, " the axis becomes 107.5 degrees " and "; The slow axis of the stretched film becomes 17 〇] The film has another two k, and in each of the right-handed and left-handed circular polarizing plates, the lamination of the λ / 2 film is from 200 to U0. A quarter-wave retardation effect is provided in all 224. Example 2 A pair of right-handed and left-handed circular polarization orientations are prepared in the same way: Solid II: Ϊ ί λ / 4 The stretched film is formed from 6-in-one-day-day-day-bin, and provides a quarter-wave retardation 9Π 15924.ptd Page 21 581887 5. Description of the invention (16); I / 4 film replaces. ; The photoelastic coefficient of the I / 4 film is i X m 2 / newton. In each of the right-handed and left-handed circular polarizing plates, there are 0 11 films and; 1/4 film laminates from 2000 to 丨, One hundred-wavelength retardation is provided in the full extension range of nanometers. Comparison of wavelengths Example 1 In the same manner as in Example 1, a pair of right-handed and left-handed The circularly polarizing plate, except that the left-handed circularly polarizing plate is formed such that when the polarizer is χ degree, "2 slow axis of stretched film" and "4 stretched thin = become degree and 8. degree, in other words, only make Polarizers; 〇 degrees or 90 degrees difference. Side edge sleeve becomes

以2實施例1相同之方式製得—對右旋及左旋圓偏振 ϊ去Ϊ 了使用於參考實施例3中製得之"2拉伸薄膜及於 多$貫施例4中製得之又/4拉伸薄膜。 旋ΐ ΐ各實施例1及2及比較實施例1及2中製得之右旋及左 旋□值振板對設置成彼此相對，以致分別包含於右旋及左 吸11振板對中之偏光鏡係設置於外側上’同時偏光鏡之Manufactured in the same way as in Example 1-right-handed and left-handed circular polarizations were removed, using the "2" stretched film produced in Reference Example 3 and the film produced in Example 4 And / 4 stretch the film. Ϊ́ ΐ The right-handed and left-handed vibration plate pairs prepared in each of Examples 1 and 2 and Comparative Examples 1 and 2 are arranged so as to face each other, so that the polarized light in the right-handed and left-handed 11-plate pairs is respectively included. The mirror system is set on the outside 'of the simultaneous polarizer

t卜& 2彼此垂直相交。在此狀態中，利用以下方法評估對 比及黑色顯示之印象。 對比： 冬田5又置右旋及左旋圓偏振板對時所得之透射率視為 ”:、甚苜 、而將當結合兩右旋圓偏振板時所得之透射率視 ”、、色顯示的條件下計算對比。tBu & 2 intersects perpendicularly to each other. In this state, the following methods are used to evaluate the impression of the contrast and black display. Contrast: The transmittance of Dongtian 5 when the right-handed and left-handed circularly polarizing plates are placed again is regarded as ":," and the transmittance obtained when two right-handed circularly polarizing plates are combined is seen. Calculations under conditions.

581887 五、發明說明（17) 黑色顯示之印象： 利用眼睛觀察判斷當設置右旋及左旋圓偏振板對時所得 的黑色顯示。 評估結果如下表所示。 實施例1 實施例2 比較實施例1 比較實施例2 對比 8,434 6, 752 264 50 黑色顯示 之印象 良好 良好 光：¾漏及 著色 顯著的光 :¾漏 雖然本發明已就其之具有特定特異性程度之較佳形式作 說明，但應明瞭可就構造細節及零件的組合和設置改變本 較佳形式之揭示内容，而不脫離如後文提出專利申請之本 發明的精神及範圍。 元件編號之說明 1 右旋及左旋圓偏振板對之其中一者 2 右旋及左旋圓偏振板對之另一者 3 液晶早元 11 偏光鏡 12 提供半波長之阻滯作用之雙折射層 13 提供半波長之阻滯作用之雙折射層 14 提供四分之一波長之阻滯作用之雙折射層 21 偏光鏡581887 V. Description of the invention (17) Impression of black display: Use the eyes to judge the black display obtained when the right-handed and left-handed circular polarizing plate pairs are set. The evaluation results are shown in the following table. Example 1 Example 2 Comparative Example 1 Comparative Example 2 Contrast 8,434 6, 752 264 50 The black display has a good impression. Good light: ¾ leak and prominently colored light: ¾ leak Although the present invention has a specific specificity regarding it The preferred form of degree is described, but it should be clear that the disclosure of this preferred form can be changed in terms of structural details and the combination and arrangement of parts without departing from the spirit and scope of the present invention as filed later. Description of component number 1 One of right-handed and left-handed circular polarizing plate pair 2 The other right-handed and left-handed circular polarizing plate pair 3 Liquid crystal premature element 11 Polarizer 12 Birefringent layer providing half-wave retardation 13 Birefringent layer providing retardation at half wavelength 14 Birefringent layer providing retardation at quarter wavelength 21 Polarizer

91115924.ptd 第23頁 581887 圖式簡單說明 圖1顯示圓偏振板對之一例子。91115924.ptd Page 23 581887 Brief description of the drawing Figure 1 shows an example of a circular polarizing plate pair.

Hill 第24頁 \\326\2d-\9M0\91115924.ptdHill page 24 \\ 326 \ 2d- \ 9M0 \ 91115924.ptd

Claims (1)

六 申請專利範圍 -偏一光種鏡右旋及左旋圓偏振板對，其各包括： 提供四八少 、 至少-提供丰、、由f長之阻'耶作用的雙折射層；及 提供四分之」具、之阻滯作用，且設置於該偏光鏡與該 層，以致該提且滞作用之雙折射層之間的雙折射 邊提供四分之_且\之阻滯作用之雙折射層的光學軸與 交’· 長之阻滯作用之雙折射層的光學軸相 其中：L 另1偏擦:板圓偏振板對之其中-者設有數目與 圓偏振板對者^射層相等之該雙折射層；包含在該 ，之全部或= = 射！在自20°至旧奈米 阻沛作用；及當在 &圍内元全提供四分之一波長之 :广將包含於該圓偏振板係位於外側上之情 该偏光鏡之距離自第一 /之各者中之該雙折射層依距 對中之第一層之快軸之^至，1層編號時，在該圓偏振板 第η層之快軸之間，θ ’第二層之快軸之間，···，在 係在自8 0至1 〇 〇度之範圍^。“鏡之透射軸之間的各交角 _ 2 ·如申睛專利範圍第〗昏 中各該雙折射層以波=板對，其 不大於5 X 1 〇-"平方米/牛頓。之先為基準之光彈性係數 3 · 一種液晶顯示裝置，包括. 一液晶單元；及 91115924. ptcl 第25頁 581887 六、申請專利範圍 一如申請專利範圍第1或2項之右旋及左旋圓偏振板對， 其係分別設置於該液晶單元之相對側上，以致分別包含於 該圓偏振板對中之該偏光鏡係位於外側上； 其中，當將包含在設置於該液晶單元之相對側上之該圓 偏振板對之各者中之該雙折射層依距該偏光鏡之距離自第 一層至第η層編號時，在該圓偏振板對中之第一層之快轴 之間，在第二層之快軸之間，…，在第η層之快軸之間， 及在該偏光鏡之透射軸之間的各交角係在自8 0至1 0 0度之 範圍内。Six applications for patent scope-right-handed and left-handed circular polarizing plate pairs of polarized light seeding mirrors, each of which includes: providing a birefringent layer of four or eight, at least-providing a rich, resistive effect by the long f's; and providing four "Bis" has a retarding effect, and is provided between the polarizer and the layer, so that the birefringent edge between the birefringent layer that raises and retards provides a birefringence of 1/4 and retarding effect The optical axis of the layer is related to the optical axis of the birefringent layer with a long retarding effect. Among them: L Another 1 Polarization: Plate circular polarizing plate pair-one of which is provided with the number of circular polarizing plate pairs ^ Equal to the birefringent layer; all contained in the or = = shot! In the range from 20 ° to the old nanometer; and when a quarter wavelength is provided within the & range: the general will be included in the circular polarizing plate system on the outside of the distance of the polarizer from the first The birefringent layer in each of the two is in accordance with the distance from the fast axis of the first layer in the alignment, and when the layer is numbered, between the fast axes of the nth layer of the circular polarizing plate, θ 'the second layer The fast axis, ..., is in the range from 80 to 100 degrees ^. "Each intersection angle between the transmission axis of the mirror _ 2 · As in the patent application scope, the birefringent layer has a wave = plate pair, which is not greater than 5 X 1 0-" square meters / Newton. First Coefficient of photoelasticity as a reference 3 · A liquid crystal display device, including: a liquid crystal cell; and 91115924. ptcl page 25 581887 6. The scope of patent application is the same as the right-handed and left-handed circular polarizing plates of item 1 or 2 Yes, it is respectively disposed on the opposite side of the liquid crystal cell, so that the polarizers respectively included in the pair of circular polarizing plates are located on the outer side; wherein, when included on the opposite side of the liquid crystal cell, When the birefringent layer in each of the pair of circular polarizing plates is numbered from the first layer to the n-th layer according to the distance from the polarizer, between the fast axis of the first layer in the pair of circular polarizing plates, between Each intersection angle between the fast axis of the second layer, ..., between the fast axis of the n-th layer, and between the transmission axes of the polarizer is in a range from 80 to 100 degrees. 9 川 5924 .pul 第26頁9 Chuan 5924.pul Page 26