TW201107837A - Liquid crystal display device - Google Patents

Liquid crystal display device Download PDF

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Publication number
TW201107837A
TW201107837A TW099118843A TW99118843A TW201107837A TW 201107837 A TW201107837 A TW 201107837A TW 099118843 A TW099118843 A TW 099118843A TW 99118843 A TW99118843 A TW 99118843A TW 201107837 A TW201107837 A TW 201107837A
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TW
Taiwan
Prior art keywords
light source
liquid crystal
light
film
crystal display
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TW099118843A
Other languages
Chinese (zh)
Inventor
Seiji Muro
Miho Mori
Akiyoshi Kanemitsu
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Sumitomo Chemical Co
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Publication of TW201107837A publication Critical patent/TW201107837A/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0056—Means for improving the coupling-out of light from the light guide for producing polarisation effects, e.g. by a surface with polarizing properties or by an additional polarizing elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)

Abstract

This invention provides a liquid crystal display device which comprises an area light source and a liquid crystal panel comprising a liquid crystal cell and a polarizing plate laminated on the area light source side surface of the liquid crystal cell, wherein the polarizing plate comprises a polarizing film and a prismatic sheet which is laminated on the surface of the polarizing film through an adhesive layer and which has a surface formed of prismatic protrusions, wherein the prismatic sheet is arranged in order that the surface formed of prismatic protrusions may face the area light source, wherein light intensity distribution of the area light source showing emitting angle dependency of light intensity of the emitting light satisfies the following definitions (1) and (2), when an angle formed by a normal direction to a light emitting surface of the area light source and a emitting direction of the emitting light of the area light source is defined as emitting angle θ (0 DEG ≤ θ ≤ 90 DEG ); (1) an local maximum value of light intensity has the most highest peak in the range of - 80 DEG ≤ θ < -40 DEG or 40 DEG < θ ≤ 80 DEG; (2) it satisfies the following inequity [1], when an angle showing an local maximum value of light intensity in the peak is θ a, and an angle showing a half of the local maximum value of light intensity in the peak is θ b.

Description

201107837 六、發明說明： 【發明所屬之技術領域】 夜晶螢幕、個人電腦等 本發明係關於用於液晶電視 的液晶顯不裂置。 【先前技術】 r等=Π _視、液晶螢幕、個人電 U的=顯不裝置之用途係急速擴大。液 擴大尤其縣，料，減本化的要求亦非以 -般之液晶料裝置係由下述者所構成 管或的面光源、光擴散板、—個或複數個擴散片、集 光片、以及貼合有偏光板的液晶面板。近年來，在可辟掛 式大畫面液晶電視用途等方面’由於顯現出對液晶顯：裝 置薄型化的要求’在此情形下’為了達成液晶_示裝置的 薄型化，必須將用於該液晶顯示襞置的構件予以薄壁化、 及削減構件數目。 對於此種需求，已知有藉由下列方法而除去一個或複 數個構件以削減零件數目的技術：將具有集光性的棱鏡片 (prism sheet)直接接著在配置於構成液晶面板的液晶單 元（liquid crystal cell)與面光源之間的偏光板之單面的 方法（例如 JPH11-295714-A 以及 JP2008-262132-A)、或使 用集光性稜鏡片作為配置於液晶面板的面光源側之偏光板 的保護膜的方法（例如JP2008-262132-A以及 JP2005-17355-A) ° 如上述專利文獻1至3中所記載之使用具備稜鏡片等 4 322121 201107837 :;的集光功能’而造成亮度、對比度等顯示 【發明内容】 :發明係為解決上述課題而研創者，本發明之目的係 供-種梵度及對比度高、顯示特性優異的液晶顯示裝置。 、本發明係關於-種液晶顯示裝置，其係由下列者所構 成：面光源；以及配置於該面光源上且具備液晶單元及積 層於該液晶單元的面光源側的面之偏光板的液晶面板。本 發明之液晶顯示裳置中，上述偏光板係具備：偏光膜；以 及經由接著劑層積層於該偏光膜的表面之楼鏡片，該棱鏡 片具有由稜鏡狀突起所構成的表面；並且，該棱鏡片係配 置成使得由稜鏡狀突起所構成的表面相對向於面光源。此 外’本發明之液晶顯示襄置，在與棱鏡狀突起的稜線方向 垂直之平面内，當將由面光源的光射出面之法線方向與面 光源的射出光之射出方向所成之角度作為射出角度0 (惟 -90 $θ$9〇°)時’顯示前述射出光的光強度之射出角度 依存性的面光源之光強度分佈係滿足下述（1)及（2): (1) 在-80°$ Θ &lt;-40。或40。&lt; 0 $80。的範圍内，具有光 強度的極大值為最高之波峰； (2) 當將顯示出上述光強度的極大值為最高之波峰中之光 強度極大值的角度作為&lt;9 a，並將顯示出該波峰中之光強度 極大值的1/2之角度作為時，係滿足下式[丨]: ^ 322121 5 201107837 I 0a-0b I &lt;30。 &quot;]。 本發明之液晶顯示裝置中，上述面光源較宜由導光 板、以及配置於該導光板側方的光源裝置所構成。此外， 光源裝置較宜為將點狀光源予以線性排列而成的光源裝置 或由棒狀光源所構成的光源裝置，且光源裝置與稜鏡片係 較宜配置成使光源裝置與稜鏡狀突起之稜線平行或約略平 行。 本發明之液晶顯示裝置中，上述面光源較宜具有配置 於導光板的一邊之一個光源裝置或配置於導光板相對向的 兩邊之2個光源裝置。 稜鏡狀突起的頂角α較佳為60。以上。此外，稜鏡狀 突起的剖面形狀較佳為二等邊三角形。 本發明之液晶顯示裝置在薄型化的同時，亮度及對比 度咼，且顯示特性優異。本發明之液晶顯示裝置可應用為 大晝面液晶電視用液晶顯示裝置，特別是可壁掛式液晶電 視用液晶顯示褒置等。 【實施方式】 第1圖係顯示本發明液晶顯示裝置的一較佳例之概略 剖視圖。本發明第1圖所示的液晶顯示裝置1〇〇係由下列 者所構成·具備導光板22以及在導光板22側方沿著導光 板22的一邊配置的光源裝置21之面光源2〇 ;以及配置於 面光源20上的液晶面板1 〇。液晶面板1 〇係由下列者所組 成：液晶單元3;偏光板1，其係積層於液晶單元3之面光 源20側的面之背面側偏光板；以及偏光板2，其係積層於 322121 6 201107837 液晶早元2 + 、 之目視側的面之前面側偏光板。偏光板1及偏 光板經由黏著劑層17貼合於液晶單元3。 _於背面侧偏光板的偏光板1具備：偏光膜12 ;經由 接者劑層]4 a i a積層於偏光膜12的面光源20側表面的稜鏡片 該棱鏡片13具有由稜鏡狀突起13a所構成的表面（以 下亦稱為穆於 、 規面），經由接著劑層16積層於偏光膜12的目 1二液2樹脂膜15。偏光板1係以其樹脂膜15側而貼 以「:d:^具體而言，液晶單元3及偏光板1係 相對白於、、 、^積層有稜鏡片13的面為相反側的面係 的稜鏡面=2日3」之方式貼合，亦即，以「稜鏡片13 係相對向於'成液Β曰面板10的面光源側表面，且該稜鏡面 面光源20」之方式推;^干貼合。具| 如丄 中，背面侧偏朵故女 ' 者，在本發明 膜12經由黏、’亦可不具有此種樹脂膜’而亦可為偏光 如第1層等而直接貼合於液晶單元3之構成。 側偏光板的：;=Γ之液晶顯示裝置係_ 由接著劑屉而、丁、，其中該背面側偏光板係具有經 詳述，其“：層t偏光臈表面的稜鏡片 ，而如後文中二 的液晶顯示在使用具有此種稜鏡片之背面側面光板 言乃配光特⑽緣用具有特定光射出特性（具體而 面光源。程度之強度的光朝何種方向射出）Μ 性優異的液置，其為亮度及對比度高彻 於呈借h 裝 此外，本發明之液晶顯示裳置由 日平元背面側貼合有已達成薄型化之偏光板的 322121 7 201107837 液晶面板，故可達成薄壁化，且仍具有充分的機械強度， 同寺由於洋文鏡片係配置於液晶面板的背面側，故可防止 液晶面板與面光源的緊密接觸’藉此而亦達成顯示特性的 改善。以下係參照適宜圖式，對本發明之液晶顯示裝置予 以詳細說明。 〈背面側偏光板〉 第2圖係顯示用於本發明之背面侧偏光板的一較佳例 之概略剖視圖，其構成與第丨圖中的偏光板丨相同（元件符 號亦相同）。如第2圖所示的例子，用於本發明之背面側偏 光板至少具備：偏光膜12 ;經由接著劑層14積層於偏光 膜12的單側表面（面光源側表面）的稜鏡片13，該稜鏡片 13具有由稜鏡狀突起i3a所構成的表面（稜鏡面）。如第2 圖所示的偏光板1，背面側偏光板亦可具備經由接著劑層 16而積層於與稜鏡片13所積層的面為相反側的面（液晶單 元側的面）之樹脂膜15。 (偏光膜） 具體而言，用於背面偏光板的偏光膜12係使二色性色 素吸附配向於單軸延伸後之聚乙烯醇系樹脂膜而成者。可 使用聚醋酸乙烯酯系樹脂經皂化後所得者作為構成聚乙烯 醇系樹脂膜之聚乙稀醇糸樹脂。就聚醋酸乙烯自旨系樹脂而 言’除了屬於醋酸乙烯酯的均聚物之聚醋酸乙稀醋之外， 可列舉醋酸乙烯酯及可與醋酸乙烯酯共聚合之其他單體的 共聚物，例如乙烯-醋酸乙烯酯共聚物等。可與醋酸乙稀醋 共聚合之其他單體可列舉如不飽和羧酸類、烯烴類、乙烤 322121 201107837 醚類、不飽和石黃酸類、具有録基之 聚乙埽醇系樹脂的I化度通常·胺類4。 (mole%) ’較佳為98莫耳％以上。聚、乙Z至⑽莫耳％ 經改質者，例如，亦可使_改亦可為 及聚乙婦繪丁W 彳· （P&lt;3lyvinylacetal)、201107837 VI. Description of the Invention: [Technical Field of the Invention] Night crystal screen, personal computer, etc. The present invention relates to liquid crystal display for liquid crystal television. [Prior Art] r, etc. Π 视, LCD screen, personal power U = display device is rapidly expanding. Liquid expansion, especially in counties, is not required to be a general-purpose liquid crystal device. The surface light source, light diffusing plate, one or a plurality of diffusing sheets, collecting sheets, And a liquid crystal panel to which a polarizing plate is attached. In recent years, in the use of large-screen LCD TVs, etc., the demand for liquid crystal display: thinning of the device has appeared. In this case, in order to achieve thinning of the liquid crystal display device, it is necessary to use the liquid crystal. The members of the display device are thinned and the number of members is reduced. For such a demand, there is known a technique of removing one or a plurality of members to reduce the number of parts by the following method: directly arranging a prism sheet having a light collecting property in a liquid crystal cell disposed in a liquid crystal panel ( Liquid crystal cell) A method of one side of a polarizing plate between a surface light source (for example, JPH11-295714-A and JP2008-262132-A), or a light collecting ruthenium as a polarizing light disposed on a surface light source side of a liquid crystal panel The method of protecting the film of the sheet (for example, JP 2008-262132-A and JP 2005-17355-A) ° as described in the above Patent Documents 1 to 3, using a light collecting function of a slab or the like 4 322121 201107837 :; Display, Contrast, etc. [Invention] The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a liquid crystal display device having a high vantage and high contrast and excellent display characteristics. The present invention relates to a liquid crystal display device comprising: a surface light source; and a liquid crystal disposed on the surface light source and having a liquid crystal cell and a polarizing plate laminated on a surface of the liquid crystal cell. panel. In the liquid crystal display panel of the present invention, the polarizing plate includes: a polarizing film; and a floor lens laminated on the surface of the polarizing film via an adhesive, the prism sheet having a surface formed by a dome-like protrusion; The prism sheet is configured such that a surface formed by the dome-shaped protrusions faces the surface light source. Further, in the liquid crystal display device of the present invention, the angle between the normal direction of the light exit surface of the surface light source and the emission direction of the surface light source is emitted as a plane in a plane perpendicular to the ridgeline direction of the prism-shaped projection. When the angle is 0 (only -90 $θ$9〇°), the light intensity distribution of the surface light source that displays the angle of incidence of the light intensity of the emitted light satisfies the following (1) and (2): (1) 80°$ Θ &lt;-40. Or 40. &lt; 0 $80. Within the range, the maximum value of the light intensity is the highest peak; (2) When the maximum value of the light intensity in the peak with the highest value of the light intensity is displayed as &lt;9 a, and will be displayed When the angle of 1/2 of the maximum intensity of the light intensity in the peak is taken as follows, the following formula [丨] is satisfied: ^ 322121 5 201107837 I 0a-0b I &lt;30. &quot;]. In the liquid crystal display device of the present invention, the surface light source is preferably composed of a light guide plate and a light source device disposed on the side of the light guide plate. Further, the light source device is preferably a light source device in which a point light source is linearly arranged or a light source device composed of a rod-shaped light source, and the light source device and the cymbal blade are preferably arranged such that the light source device and the dome-like projection are The ridgelines are parallel or approximately parallel. In the liquid crystal display device of the present invention, it is preferable that the surface light source has one light source device disposed on one side of the light guide plate or two light source devices disposed on opposite sides of the light guide plate. The apex angle α of the dome is preferably 60. the above. Further, the cross-sectional shape of the beak-like projection is preferably a equilateral triangle. The liquid crystal display device of the present invention is thinner in thickness, has better brightness and contrast, and is excellent in display characteristics. The liquid crystal display device of the present invention can be applied to a liquid crystal display device for a large-surface liquid crystal television, in particular, a liquid crystal display device for a wall-mounted liquid crystal television. [Embodiment] Fig. 1 is a schematic cross-sectional view showing a preferred embodiment of a liquid crystal display device of the present invention. The liquid crystal display device 1 shown in Fig. 1 of the present invention is composed of the following: a light guide plate 22 and a surface light source 2 of the light source device 21 disposed along one side of the light guide plate 22 on the side of the light guide plate 22; And a liquid crystal panel 1 配置 disposed on the surface light source 20. The liquid crystal panel 1 is composed of a liquid crystal cell 3, a polarizing plate 1 which is laminated on the back side polarizing plate of the surface of the liquid crystal cell 3 on the side of the light source 20, and a polarizing plate 2 which is laminated to 322121 6 201107837 LCD early morning 2 + , the front side of the face of the visual side of the polarizer. The polarizing plate 1 and the polarizing plate are bonded to the liquid crystal cell 3 via the adhesive layer 17. The polarizing plate 1 on the back side polarizing plate includes a polarizing film 12, and a slab laminated on the surface of the surface light source 20 of the polarizing film 12 via a carrier layer 4 aia. The prism sheet 13 has a ridge-like projection 13a. The surface of the structure (hereinafter also referred to as "mu" and the surface) is laminated on the first liquid 2 resin film 15 of the polarizing film 12 via the adhesive layer 16. In the polarizing plate 1, the surface of the resin film 15 is attached with ":d:^, specifically, the liquid crystal cell 3 and the polarizing plate 1 are relatively white, and the surface on which the tantalum sheet 13 is laminated is the opposite side. The kneading surface = 2 days 3" is attached, that is, the "skull film 13 is opposite to the surface light source side surface of the liquid forming panel 10, and the surface light source 20" is pushed; ^ Dry fit. In the case where the film of the present invention is applied to the liquid crystal cell 3, the film 12 of the present invention may be directly adhered to the liquid crystal cell 3 by adhesion, 'may not have such a resin film', or may be polarized, such as the first layer or the like. The composition. The liquid crystal display device of the side polarizer: Γ 由 由 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 The liquid crystal display of the second embodiment uses the back side light plate having such a cymbal sheet, and the light distribution characteristic (10) has excellent light emission characteristics (specifically, the surface light source, the intensity of the light is emitted in which direction) is excellent. In the liquid crystal display panel of the present invention, the liquid crystal display panel of the present invention is attached to the back surface of the Japanese flat element by a polarized plate having a thickness of 322121 7 201107837, which can be achieved. Since it is thinned and still has sufficient mechanical strength, since the Japanese lens system is disposed on the back side of the liquid crystal panel, it is possible to prevent the liquid crystal panel from coming into close contact with the surface light source, thereby achieving improvement in display characteristics. The liquid crystal display device of the present invention will be described in detail with reference to the appropriate drawings. <Back Side Polarizing Plate> Fig. 2 is a schematic cross-sectional view showing a preferred example of the back side polarizing plate of the present invention. The configuration is the same as that of the polarizing plate 丨 in the second drawing (the same reference numerals are used). As an example shown in Fig. 2, the back side polarizing plate used in the present invention has at least: a polarizing film 12; via an adhesive layer 14 is a laminate 13 laminated on the one-side surface (surface light source side surface) of the polarizing film 12, the cymbal 13 having a surface (facet) formed by the ridges i3a. The polarizing plate as shown in Fig. 2 1. The back side polarizing plate may further include a resin film 15 which is laminated on a surface (a surface on the liquid crystal cell side) opposite to the surface on which the back sheet 13 is laminated via the adhesive layer 16. (Polarizing film) Specifically, The polarizing film 12 used for the back polarizing plate is obtained by displacing a dichroic dye to a polyvinyl alcohol-based resin film which has been uniaxially stretched. A saponification of a polyvinyl acetate-based resin can be used as a constituent polyethylene. Polyvinyl alcohol resin for alcohol resin film. In terms of polyvinyl acetate, in addition to polyethylene acetate vinegar which is a homopolymer of vinyl acetate, vinyl acetate and acetic acid can be mentioned. Other singles of vinyl ester copolymerization Copolymers, such as ethylene-vinyl acetate copolymer, etc. Other monomers copolymerizable with ethyl acetate vinegar can be exemplified by unsaturated carboxylic acids, olefins, bake 322121 201107837 ethers, unsaturated naphthenic acids The degree of chemical conversion of the polyacetal resin having a recording group is usually amine 4. (mole%) 'preferably 98 mol% or more. Poly, B to (10) mol %, for example, modified, for example , can also make _ change can also be and the collection of women, W 彳 · (P &lt; 3lyvinylacetal),

κ 乙料 丁路（p〇lyvinylbuty J 的聚合度通常為約圆至 f ♦乙㈣系樹脂 ^ 10000 較佳為約 1500 至 5000。 $乙騎系樹骑製膜後 的原材膜。將聚乙_^ 传敎㈣马偏先膜 可利用以往‘的方法沒有特別限定’ 所成之原材膜的膜厚：：進行製獏。由聚乙稀醇系樹脂 150^〇 、的膜“有特別限定，例如為約1。至 偏光膜通常係經由下 醇系樹脂所成之原材膜以，驟製造：將如上述由聚乙烯 素吸附的步％ 〜色性色素染色而使該二色性色 乙烯醇系樹脂祺以：酸水:)、，將吸附有-色性色素的聚 驟）；以及名盆、 ，谷液處理的步驟（硼酸處理步 步驟（水洗處5ΓΓ料所蹄㈣處理後進行水洗的 經單：:二在製造偏光膜之際’通常聚乙烯醇系樹脂膜係 二早車:延伸’ 1¾單軸延伸可在染色處理步驟之前進行’亦 :在木色處理步驟中進行，亦可在染色處理步驟之後進 ^在糸色處理步驟之後進行單韩延伸的情形中，該單軸 延伸可在顺處理步驟之前進行，亦可在魏處理步驟中 進仃。當然，亦可在該等複數個階段中進行單軸延伸。單rThe polymerization degree of κ 乙丁丁路 (p〇lyvinylbuty J is usually about round to f ♦ B (tetra) resin ^ 10000 is preferably about 1500 to 5000. The original film of the film after riding the film is taken. B _^ 敎 敎 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四In particular, it is about 1. The polarizing film is usually produced by a raw material film made of a lower alcohol resin, and the second color is dyed by the step % to the coloring matter adsorbed by the above-mentioned polyethylene. The color of the vinyl alcohol resin is: acid water:), the polymerization of the coloring pigment is adsorbed; and the step of treating the pot and the liquid (the boric acid treatment step (the washing step 5) After the treatment, the water-washed sheet:: 2 at the time of manufacturing the polarizing film 'usually polyvinyl alcohol-based resin film system two mornings: extension ' 13⁄4 uniaxial extension can be carried out before the dyeing process step' also: in the wood color processing step In progress, after the dyeing process step, after the color processing step In the case of a single-hank extension, the uniaxial extension can be performed before the processing step, or in the Wei processing step. Of course, the uniaxial stretching can also be performed in the plurality of stages.

' I 322121 201107837 軸延伸能以在周速相異的滾輪（roll)間朝單軸進行延伸的 方式進行，亦能以使用熱滾輪而朝單軸進行延伸的方式進 行。此外，可利用在大氣中進行延伸的乾式延伸，亦可利 用在溶劑中使其膨潤之狀態下進行延伸的濕式延伸。延伸 倍率通常為約3至8倍。 在染色處理步驟中，聚乙烯醇系樹脂膜之以二色性色 素所進行的染色，舉例而言，可藉由將聚乙烯醇系樹脂膜 浸潰於含有二色性色素的水溶液中而進行。可使用例如 碘、二色性染料等作為二色性色素。二色性染料中可包含 例如：由C. I. DIRECT RED 39等雙偶氮（disazo)化合物 所成之二色性直接染料；由三偶氮（trisazo)、四偶氮化合 物等所成之二色性直接染料。再者，聚乙烯醇系樹脂膜較 宜在染色處理之前先施行浸潰於水之浸潰處理。 使用碘作為二色性色素的情形中，通常係採用將聚乙 烯醇系樹脂膜浸潰於含有碘及碘化鉀的水溶液中以進行染 色之方法。在該水溶液中，碘的含量通常相對於每100重 量份水而為0. 01至1重量份，碘化鉀的含量通常相對於每 100重量份水而為0. 5至20重量份。使用碘作為二色性色 素的情形中，用於染色的水溶液之溫度通常為20至40°C， 此外，浸潰於該水溶液中的浸潰時間（染色時間）通常為20 至1800秒。 另一方面，使用二色性染料作為二色性色素的情形 中，通常係採用將聚乙烯醇系樹脂膜浸潰於含有水溶性二 色性染料的水溶液中以進行染色之方法。在該水溶液中， 10 322121 201107837 制含量通常相對於每1GG重量份水而為· =份，較佳為lxi〇l 2重量份，特佳為祕3至 X I份。該水溶液亦可含有硫酸㈣無機鹽作為染色 h’使用—色性染料作為二色性色素的情形中，用於染 色的染料水溶液之溫度通常為2〇至赃，此外，浸於該 水溶液中的浸潰時間（染色時間）通常為10至1800秒。 硼酸處理步驟係藉由將經二色性色素 咖_於含有顯的水溶液中而進行。在:有： 酉夂的水减中，猶的相對於每⑽重量份水而為 1至15重量份，較佳為5至12重量份。在上述染色處理 步驟使用碘作為二色性色素的情形中，用於該賴處理步 驟之含有蝴酸的水溶液較宜含有蛾化鉀。在該情形下，在 含有硼酸的水溶液中’峨化卸的量通常相對於每⑽重量 份水而為（U至15重量份，較佳為5至12重量份。於含 __水溶液中的浸潰時間通常為60至湖秒，較佳 為150至_秒，更佳為200至4〇〇秒。含有哪酸的水溶 液之溫度通常為啊以上，較料5G至阶，更 至 80°C。 接下來的水洗處理步财，係藉由將上述魏處理後 的聚乙歸醇綠賴浸潰於例如水巾而進行水洗處理。在 水洗處理中，水的溫度通常為5至肌，浸潰時間通常為 1至120秒。水洗處理後，通常係施行乾燥處理，以獲得 ，光膜1燥處理可制例如熱風絲機、遠紅外線加熱 β等進行。乾燥處理的溫度通常為3G至⑽。c，較佳為5〇 322121 11 201107837 至80 C。乾燥處理的時間通常為6〇至6〇〇秒，較佳為 至600秒。 以此方式對^^乙婦醉糸樹脂膜施行單轴延伸、利用 '一色性色素所進行之染色、硼酸處理以及水洗處理，而獲 得偏光膜。該偏光膜的厚度通常在5至4〇//m的範 (稜鏡片） 用於背面侧偏光板的稜鏡片13具有由稜鏡狀的突起 (稜鏡狀突起13a)所構咸的表面（稜鏡面）。稜鏡片13係以 使與稜鏡面相反側的面相對向於偏光膜12之方式積層於 偏光膜12上。藉由將具有稜鏡面的稜鏡片13配置於背面 側偏光板的表面，使該棱鏡面相對向於後述面光源，可有 思地改變從面光源的光射出面（相對向於稜鏡面之側的面） 射出的光之方向。根據本發明’藉由上述稜鏡片，可將來 自面光源的射出光，特別是具有指向性的射出光[主要的射 出方向為與面光源的光射出面之法線方向（液晶顯示裝置 的正面方向）相異的方向之射出光]的射出方向偏向至液晶 顯示裝置的正面方向’藉此，可提高液晶顯示裝置正面的 亮度及對比度。再者，稜鏡片13亦發揮作為偏光膜12的 保護膜之功用。 此處，所謂的「稜鏡狀突起」’意指令三角形狀（可包 括於一部分含有曲線的略三角形狀 '鋸齒形狀等）朝與該三 角形狀的面垂直之方向平行移動後的軌跡所顯示之柱狀體 中’被夾在非形成底面之兩個侧面的邊（稜線）的部分（該三 角形狀的底邊之對角的軌跡）；稜鏡面係為以相對於該柱狀 12 322121 201107837 體之稜鏡狀突起的面（該三角形狀的底邊之軌跡）作為底面 而平行地密接複數個該柱狀體並予以配列而成者，複數個 稜鏡狀突起係朝單一方向（以使各棱鏡狀突起的稜線平行 或略平行之方式）配列。第3圖係顯示稜鏡片的表面形狀之 一例的概略斜視圖，該稜鏡狀突起的剖面形狀為二等邊三 角形。 稜鏡片13所具有的稜鏡狀突起13a之頂角（頂點的角 度）可例如為30至100°，在本發明中，為了使來自面光源 的射出光，特別是具有指向性的射出光更有效率地偏向至 液晶顯示裝置的正面方向，特別較佳為60°以上、100°以 下，更佳為60°以上、80°以下。 稜鏡狀突起13a的高度可例如為100至200 /z m。此外， 稜鏡狀突起13a的間距（pitch)(相鄰的突起的稜線間之距 離）係考慮稜鏡狀突起13a的頂角及高度而適當地決定，例 如，可為5至300/zm。 構成稜鏡狀突起13a的剖面三角形狀中的突起之兩邊 可為相同長度，亦可具有相異長度，但至少在所使用的面 光源的光源裝置係配置於導光板所面對面的兩邊之情形 中，該兩邊較佳為相同長度，因此，稜鏡狀突起13a的剖 面形狀較佳為二等邊三角形。複數個稜鏡狀突起13a的高 度可全部相同，亦可相異。此外，在突起間形成的溝之形 狀可為直線，亦可為曲線。 可使用公知的各種材料作為稜鏡片13的材質。例如， 可使用：聚乙烯、聚丙烯等聚烯烴系樹脂；聚對苯二甲酸f 13 322121 201107837 乙一 s旨樹脂、聚萘一甲酸乙二s旨樹脂等聚g旨系樹脂；聚氣 乙烯樹脂、聚碳酸醋系樹脂、降冰片晞系樹脂、聚胺酉旨 (polyurethane)系樹脂、丙烯酸系樹脂、聚甲基丙烯酸甲 酉旨樹脂、聚苯乙烯系樹脂、曱基丙稀酸甲醋-苯乙稀系共聚 物、丙烯腈-丁二烯-苯乙烯系共聚物、丙烯腈—笨乙烯系共 聚物等合成高分子；二醋酸纖維素樹脂、三醋酸纖維素樹 脂等天然高分子。其中’從透明性、透濕性及生產性的觀 點’適宜者為聚烯經系樹脂、聚丙稀酸系樹脂、聚碳酸酉旨 系樹脂、聚酯系樹脂、聚苯乙烯系樹脂、曱基丙烯酸曱酯_ 笨乙烯系共聚物、丙烯腈-丁二烯-笨乙烯系共聚物、丙烯 腈-苯乙烯系共聚物之任一種熱可塑性樹脂。此外，必要 時，此等高分子材料可含有紫外線吸收劑或抗氧化劑、可 塑劑等添加劑。 稜鏡片13係在以上述透明高分子材料作為基材時，可 利用光聚合物（photopolymer)製造法、異型擠壓（pr〇file extrusion)法、壓製成形法、射出成形法、滾筒轉印法、 雷射剝蝕（laser ablation)法、機械切削法、機械研削 法等公知的方法予以製造。此等方法可個別地單獨使用， 或者亦可組合二種以上的方法。 才文鏡片13的厚度沒有特別限定，但從偏光板的薄壁化 之觀點而言，較佳為約2〇#m以上、2〇〇em以下，更佳為 3〇#m以上、loo^m以下。 (樹脂膜） 如第2圖所示的例子，在偏光膜12的與積層有稜鏡片 322121 14 201107837 的面為相反側的面，亦可積層保護獏或光學補償膜等樹脂 :膜15。在此情形下，偏光板丨係經由積層於樹脂膜15上 * 的黏著劑層而貼合於液晶單元。此外，亦可經由接著劑層 或黏著劑層將後述光學功能性膜積層於偏光膜12、或者保 護膜或光學補償膜上。 作為樹脂膜15者，可列舉三醋酸纖維素““此以“ cellulose)膜（TAC膜）等纖維素系樹脂膜、聚烯烴系樹脂 膜丙烯酸系樹脂膜、聚對苯二甲酸乙二酯等聚酯系樹脂 膜等。 構成上述纖維素系樹脂膜的纖維素系樹脂可列舉纖維 素的。卩分酯化物或完全酯化物，例如，纖維素的醋酸酯、 丙酸酯、丁酸酯，以及該等的混合酯等。更具體而言，可 J牛如一醋I纖維素、二醋酸纖維素、醋酸丙酸纖維素、 贈酉夂丁酸纖維素等。在將此種雜素請脂進行製膜以作 為膜蚪，且使用溶劑澆鑄法、熔融擠壓法等公知的方法。 纖、’隹素知系樹脂膜的市售品可列舉如「如」加了刪」（富 股）製造）、「Fuji TacTD8_」（富士軟片（股）製 ^ Fuji TacTD80UZ」（富士軟片（股）製造）、「Κ8υχ2Μ」 1尼「卡果旎達精密光學（K〇nica Min〇lta 〇pt〇)(股）製 KC8UY」（柯尼卡美能達精密光學（股）製造）等。 在）·、+、^由纖維素系樹脂膜所成的光學補償膜可列舉如 的膜1維素系樹月旨膜中含有具相位差調整功能之化合物 之化a板&amp;纖、錢系樹脂膜表面塗佈具相位差調整功能 成的膜；將纖維素系樹脂膜單軸延伸或雙軸延[ 322121 15 201107837 7件之膜等。市售之由纖維素系樹脂膜所成的光學補償 、可歹J舉如虽士軟片（股）製造的「WV BZ 438」、「WV EA」； 柯尼卡美旎達精密光學（股）製造的「KC4FR-1」、「KC4HR-1」 等。 、々&amp;纖維素系樹脂膜所成的保護膜或光學補償膜的厚度 沈有特別限制，但較宜在2q至的範圍内，更佳在 30至90 的範圍内。在厚度未達的情形中，膜會 、处理另方面’在厚度超過9〇/zm的情形中，加工 性會變差，此外，對所得偏光板的薄壁化及輕量化會不利。 〇σ由上述聚婦煙系樹脂膜所成的光學補償膜可列舉如經 ，軸延伸或雙轴延伸之環埽烴系樹脂膜。在應用於大型液 ，電視用液晶面板（特別是具備垂直配向㈤模式的液晶 之液晶面板）的情形中，從光學特性及财久性的觀點， %烯fe系樹脂膜的延伸品亦宜作為上述光學補償膜。此 處’所明的「ί哀烯烴系樹脂膜」係指例如由具有以降冰片 ，或多環降冰片烯系單體等環狀烯烴（環烯烴）所成的單體 單兀之熱可塑性樹脂所構成的膜。環烯烴系樹脂膜可為使 用單一環烯烴的開環聚合物之氫化物、或使用二種以上環 晞烴的開環絲物之氫化物，亦可為輯烴與鏈狀稀烴及7 或具有乙烯基的芳香族化合物等的加成共聚物。此外，在 主鏈或側鏈導入有極性基者亦為有效。 市售之熱可塑性環烯烴系樹脂有德國T〇pAS ADVANCED POLYMERS _公司版售的「Topas」、JSR (股）販售的 ART0N」、日本Zeon (股）販售的「ze〇n〇r」及「ΖΕ〇ΝΕχ」、 322121 201107837 三井化學（股）販售的「APEL」（皆為商品名）等，該等可適 :當地加以使用。將此種環烯烴系樹脂進行 ^環 烯烴系樹脂膜。宜使用溶劑澆鑄法、&quot; 法作為製膜方法。此外=亦:，法等公知的 業（股）販售的「Escena及「sc 你J如積水化學工 售的「麵⑽膜」、规」 品名）等經製膜後之環稀煙系樹 膜」（白— 使用。 此專亦可適當地加以 :。光板_化及輕量化會不利等，故=:至 用於本發^偏絲可藉 ^稜鏡片貼合於上述偏光膜的單側&amp;用==上述 2圖，獲得將镜鏡片13經由接著劑層14積=’參照第 表面而成之偏光板。在將樹脂臈15 γ偏先膜12 一面的情财，偏光膜12與樹賴^5^^们2之另 接著劑來進行。該接著劑係形成接著齊、^糸同樣使用 膜15貼合於偏光膜12的情形卜曰6者。在將樹脂 接著劑，亦可為相異種類的接著劑。用於種類的 接者劑可列舉水系接著劑，亦即 、的貼合之 於水中而成的接著劑，以及先硬化分溶解或分散 由可使接著劑層薄化的觀點而言，較宜使用上述 ^ Γ C 1 322121 17 201107837 接著劑。水系杻芏 接樹脂― 聚乙賴樹成”:形中，該 嬌醇、貝聚乙烯酵、乙醯乙醯基改質聚乙 之聚乙_=質聚乙埽醇、胺基改質聚乙料等經改質 丄通常’以聚乙稀醇系樹脂作為接著劑 著劑係調製成聚乙稀醇系樹脂的水溶液。相 =重讀的水，接著劑中的聚乙_系樹脂之漢度 U為至10重量份’較佳為約1至5重量份。 之 揚升=稀:_為接著劑成分的接著劑中，為了 較且添加乙二醛、水溶性環氧樹脂等硬化性 成分或架橋劑。就水溶性環氧樹脂而言，可適當地使用例 如在藉由使二伸乙三胺、三伸乙四胺等多伸烷基多胺 (polyalkylene polyamine)與己二酸等二羧酸反應所得之 聚醯胺多胺（polyamide polyamine)中使表氣醇反應所得 聚醯胺多胺環氧樹脂。該等聚醯胺多胺環氧樹脂的市售 品可列舉住化CHEMTEX (股）販售之「Sumiraze resin 650」 及「Sumiraze resin 675」、日本 PMC (股）販售之「WS-525」 等。相對於100重量份的聚乙烯醇系樹脂，此等硬化性成 分或架橋劑的添加量（在共同添加的情形中則為合計量）通 常為1至100重量份，較佳為1至50重量份。在上述硬化 性成分、架橋劑的添加量相對於重量份的聚乙烯醇系 樹脂係未滿1重量份的情形中’有接著性提升效果小的傾 322121 201107837 向二此外，在上述硬化性成分、架橋劑的添加量相對於則 重量份的聚乙稀醇系樹脂係超過刚重量份的情形中 接著劑層脆化的傾向。 此外，在使用胺酉旨樹脂作為接著劑成分的情形中，適 當接著劑組成物之例可列舉聚I系離子聚合物型胺醋樹脂 與具有縮水甘油氧基（glycidy1〇xy)的化合物之混合物。此 處’所謂的「聚I系離子聚合物型胺醋樹脂」係為具有聚 醋骨架的胺醋樹月旨，且於該骨架内導入少量離子性成分（親 水成分）者。由於該等離子聚合物型胺酉旨樹月旨不使用乳化劑 而直接在水中乳化成乳劑，故其適宜作為水系接著劑。聚 醋系離子聚合物型聚胺醋樹脂本身為公知者，例如，日本 特開平7-97504號公報中記載用以使紛系樹脂分散於水性 媒質中的高分子分散劑之例，此外，日本特開·5_〇7〇14〇 號公報及日本特開2005_181817號公報中，揭示以聚酯系 離子聚合物型胺酯樹脂與具有縮水甘油氧基的化合物之混 合物作為接著劑，將環烯烴系樹脂膜貼合於由聚乙烯醇系 樹脂所構成之偏光膜。 .作為將接著劑塗佈在偏光膜及/或貼合於該偏光膜的 構件（稜鏡片、或者保護膜或光學補償膜）的方法者，宜為 般習知的方法’可列舉如流延法、繞線棒塗佈法（Meyer bar coat method)、凹版塗佈法（gravure coat method)、 雙輥式塗布（c〇inma coater method)、刮刀成膜法（doctor blade method) ' 模具塗佈法（die coat method)、浸潰塗 佈法（dip coat method)、喷霧法等。所謂的「流延法」係[ 19 322121 201107837 使屬於被塗佈物的膜朝約略垂直方向、約 兩者之間的偏斜方向移勤’同時使接著劑流 佈於^ 膜的表面之方法。塗佈接著劑後，使偏光膜及貼 光膜的構件重疊，藉由軋轉（nipr〇Uer)等爽住二=偏 膜的貼合。舉例而言’使用軋辕之膜的貼合可採用·：仃 佈接著劑後，利用滾輪等進彳^ 用.在塗 法；在塗佈接著劑後，通過滾 肩之方 襁-、/装輪之間進仃加壓而予 以t開之以。在财，可❹ = 為滚輪的材質。此外膠等作 相同材質，亦可為相異材質。 來輪T為 在上述貼合後’可藉由進行乾燥使接 得偏光板。該賴處理W由例如吹減而 = 理的溫度通常係在4。至·。的範圍内，較 ：： 乾燥時間通常為別至湖秒。 乾燥後的接著#1層厚度衫“·謝至 0· 01至2//m ’更佳為0.0! $】 平乂住马 1 。在乾燥後的接著劑層 厚度未達0. 001 的情形中，右姑+ r 有接者變得不充分之疑*， 此外，若乾燥後的接著劑層厚声和、A c 板的外觀不良之疑慮。再者5_’則有產生偏光 隹乾燥、硬化前，使用上述 軋親等貼合後的接著劑層厚度較佳為一以下，又，較佳 為0. 01 /zm以上。 乾燥處理之後，亦可在室溫以上的溫度施行至少半 天、通常為1天以上的热成，以獲得充分的接著強度。典 型上該熟成係在捲取成捲筒狀的狀態下進行。較佳的熟成 322121 20 201107837 溫度係在30至5(TC的範圍，更佳在35至45〇c的範圍… 熟成溫度朗阶，在錢成捲筒狀的狀態τ，則容易^ 生所明的「捲閉現象」。再者，熟成時的濕度沒有特別限定， 但較宜選擇相對濕度在約G獅至·RIJ的範圍者。熟 時間通常為約1天至1G天，較佳為約2天至7天。 ^此外，上述光硬化性接著劑可列舉如光硬化性環氧樹 脂與光陽離子聚合起始劑的混合物等。光硬化性環氧樹脂 可列舉如脂環式環氧樹脂、不具有脂環式構造的環氧^ 脂、以及其混合物等。光硬化性接著劑除了光硬化性環氧 樹脂之外，亦可含有丙烯酸系樹脂、氧雜環丁烷（0Xetane) 樹脂、胺酯樹脂、聚乙烯醇樹脂等，此外，亦可同時含有 光陽離子聚合起始劑與光自由基聚合起始劑，或能以代替 光陽離子聚合起始劑之方式而含有光自由基聚合起始劑。 在使用光硬化性接著劑的情形中，將光硬化性接著劑 塗佈在偏光膜及/或貼合於該偏光膜的構件（稜鏡片、或者 保護膜或光學補償膜），並將偏光膜及貼合於該偏光膜的構 件予以貼合後，藉由照射活性能量線而使光硬化性接著劑 硬化。光硬化性接著劑的塗佈方法以及膜的貼合方法可與 水系接著劑相同。活性能量線的光源沒有特別限定，但較 佳為在波長400 nm以下具有發光分佈的活性能量線，具體 而言’較宜使用低壓水銀燈、中壓水銀燈、高壓水銀燈、 超高壓水銀燈、化學燈、黑光燈（black light lamp) '微 波激發水銀燈、金屬鹵化物燈等。 對光硬化性接著劑的光照射強度沒有特別限定，係根 E 322121 21 201107837 據該光硬倾接著—㈣而適當地決定 ，但較佳為對聚 &amp;起㈣的_化有致的波長領域之照射強度為（M至 圆㈣/⑽。在㈣趣度為Μ·】、上的情形中， 反應時間不會過長’而在該照射強度為6000 mw/cm2以下的 情形中’由從*源料W熱以及光硬化性接著劑硬化時 的發…、所1^成之％氧樹脂黃化或偏光膜劣化的問題會較 ^對光硬化性接著劑的光照射時間沒有特別限定，係依 被f化之級化性接著辭以控㈣，但較宜^定成使累積 光量（其表了上述照射強度與照射時間之乘積）成為10至 10000 mj/m。在對光硬化性接著劑進行照射的累積光量為 1〇 —以上的情形中，可大量生成源自聚合起始劑的活 ，種’使硬化反應更確實地進行，此外，在對光硬化性接 著劑進订照射的累積光量為1GGGG mJ/m2以下的情形中，照 射時間不會過長，可維持良好的生產性。 … 在藉由活性能量線的照射而使光硬化性接著劑硬化的 情形中’較宜在偏光膜的偏光度、穿透率及色相、以及棱 鏡片、保制及光學難膜的透明性等偏光板的諸功能不 會下降的條件下進行硬化。 再者’在稜鏡片以絲制或光學補伽貼合於偏光 膜之前，為了提高接著性，亦可在偏光膜及/或貼合於該偏 ^膜的構件之接著表面施行電漿處理、電暈處理、紫外線 照射處理、火焰處理、皂化處理等表面處理。作為息化處 理者'，可縣如浸潰於氫氧仙或氫氧化料鹼性水溶液 之方法。 322121 22 201107837 此外’如上所述’背面側偏先板亦可具有積層於偏光 膜12的與積層有稜鏡片13的面為相反侧的面之光學功能 性膜。光學功能性膜可列舉如：使液晶性化合物塗佈、配 向於基材表面而成的光學補償瞑；讓某些種類的偏振光穿 透且將顯不出與前述偏振光為相反之性質的偏振光予以反 射之反射型偏光膜；由聚碳酸酯系樹脂所構成之相位差 膜，由環烯烴系樹脂膜所構成之相位差膜；在表面具有凹 凸形狀之附有防眩功能的膜；附有表面抗反射功能的膜； 在表面具有反射功能的獏；以及兼具反射功能與穿透功能 之半穿透反射膜等。對應於使液晶性化合物塗佈、配向於 基材表面而成的光學補償膜之市售品，可列舉如「wv膜」 (昌士軟片（股）製造）、「NH膜」（新曰本石油（股）製造）、「NR 膜」（新日本石油（股）製造）等。對應於讓某些種類的偏振 光穿透且將顯示出與前述偏振光為相反之性質的偏振光予 以反射之反射型偏光膜之市售品，可列舉如「DBEF」（3M 公司製造，於日本係購自住友3M (股））等。此外，對應於 由環歸烴系樹脂膜所構成之相位差膜之市售品，可列舉如 「ART0N膜」（JSR (股）製造）、「Escena」（積水化學工業（股） 製造）、「ZE0N0R膜」（日本Zeon (股）製造）等。 背面側偏光板較宜在與棱鏡片相反側的表面具有用於 貼合於液晶單元之黏著劑層。就用於此種黏著劑層之黏著 劑而言’可使用以往公知的適宜黏著劑，可列舉如丙烯酸 系點著劑、胺酯系黏著劑、聚矽氧（silicone)系黏著劑等。 其中’從透明性、黏著力、可靠性、重工性等觀點而言’ f 23 322121 201107837 較宜使用丙烯酸系黏著劑。可藉由下列方法敷設黏著劑 層：將此種黏著劑作成例如有機溶劑溶液，藉由模具塗佈 或凹版塗料將其塗佈於基材膜⑽如，偏光料）上，並 使其乾燥。此外，亦可藉由下列方法敷設：將經施行離$ : 處理之塑膠膜（稱為分離臈（separate filn]))上所形成❺ 片狀黏著賴印至基㈣。料㈣的厚度沒有特別限 制’較宜在2至40仁m的範圍内。 〈前面側偏光板〉 前面側偏光板（第1 ®巾的偏光板2)係骑晶單元為 基準，配置於與面光源為相反之側（目視側）的偏光板。可 使用以往公知的適宜偏光板作為前面側偏光板。舉例而 S，除了在偏光膜的單面或雙面積層由三醋酸纖維素等所 成之保濩膜的偏光板之外，亦可使用經施行防眩處理、硬 塗層處理、抗反射處理之偏光板等。此外，亦可為在偏光 膜的單面積層由聚對苯二曱酸乙二酯膜、丙烯酸系膜、聚 丙烯膜等所成之保護膜或光學補償膜的偏光板。 〈面光源〉 本發明之液晶顯示裝置具備用以均勻地照明液晶面板 之面光源20。在本發明中，為了最大限度地發揮稜鏡片的 功能（使來自面光源的射出光偏向，而將來自稜鏡狀突起之 射出光的方向朝液晶顯示裝置的正面方向修正的功能），係 使用具有特定光射出特性（配光特性）的面光源作為面光源 2〇。更具體而言，參照第4圖’在本發明中所使用的面光 源中，在與稜鏡片所具有的稜鏡狀突起之稜線方向垂直的 24 322121 201107837 光面光源的光射出面之法線方向τ與面光 源的射出先之射出方向Μ所成之角度作為射出角产^ (惟 二=〇 )時，顯示出該射出光的光強度之射出角度 依存性的面光源之光強度分佈係滿足下述⑴及⑵. ⑴…θ&lt;，。或4〇。〈㈣。的範:二 光強度的極大值為最高之波峰； =當將顯示出上述光強度的極大值為最高之波蜂中之光 产===度作為心’並將顯示出前述波•中之光強 η:， —再者，射出角度θ可採取的範圍係—9〇、θ謂。。θ 出1。=二光源的射出光之方^與面光源的光射 决白1:，向為同方向。卜一9『係意指在平面W内， 二旋Si源的射出光之方向M相對於法線方向”系呈逆時 嶋旋轉)9。。的角度；M0。係意指在平* ’面光源的射出光之方向M相對於法線方向了係 壬順％鐘旋轉（或逆時鐘旋轉）9〇β的角度。 ::有相較於面光源的光射出面之:線方向τ為較遠 以所且=Μ (射出角度0的絕對值較大）的光入射至稜 具有的稜鏡狀突起13a時，如第5_示意性顯示’ ^射光係職稜餘突起13a的斜邊p並藉㈣斜邊p =而可朝液晶顯示裝置的正面方向(面光源的光射出 偏光^方向T)集光。亦即，在使用具備棱鏡片的背面側 先板之液晶顯示裝置中，此種具有相較於面光源的光射⑴ 322121 25 201107837 出面之法線方向τ為較遠離的射出方向M (射出角度θ的 絕對值較大）的光係能夠大幅地提升液晶顯示裝置正面方 向的亮度及對比度。其t，本發明者發現，顯示出下述光 強度分佈特性[滿足上述條件⑴][亦即， ㈣:於平面…在们θ&lt;，。或40。二佈： 牵巳圍（換而言之，射出角度Θ的絕對值丨θ |係40。&lt; | θ I满。的範圍）内，具有光強度的極大值為最高之波峰] 的面光源’會由於構成該波峰的光係藉由稜鏡片而有效地 被集光於液晶顯示裝置的正面方向（面光源的光射出面之 法線方向Τ)，因而可極有效地提高液晶顯示裝置正面方向 的亮度及對比度。再者，將上述條件⑴中所考慮的射出角 度Θ之下限及上限分別設為一 80。、80。之原因為：在超過該 下限及上限的角度之光強度係難以精度良好地測定而不實 用之故。 上述光強度的極大值為最高之波峰較佳係位於50。^ I Θ | $80°的範圍内，更佳係位於6〇。$丨0 | $8〇。的 範圍内。 另-方面，本發明者發現，上述光強度的極大值為最 高之波峰之寬度（寬廣度）對液晶顯示裝置正面方向的亮度 及對比度亦會造成f彡響。亦即，在平面w Μ之面杨的光 強度分佈中，當將顯示出上述光強度的極大值為最高之波 峰中之光強度極大值之角度作為0 a，並將顯示出該波峰中 之光強度極大值的1/2之角度作為ΘΙ3時，若半峰半寬度 (half width at half maximum)丨 0a_0b 丨未達 3〇β[ = 322121 26 201107837 足上述條件（2)]，則不會大幅受到射出角度$的絕對值較 小的光之不良影響，並可藉由屬於主要射出光之射出角度 附近的光的集光，而提南液晶顯示裝置正面方向的 党度及對比度。相對地’在半峰半寬度丨0 &amp;—叫為 以上或不存在6b的情形（例如，該波♦為極缓和的波夺， 而在-80。$ θ副。的範圍中，屬於極大值1/2的點係不存 在於波峰上的情形）中’構成上述光強度的極大值為最高之 波峰的底部附近之射出角度Θ的絕對值較小的光成分會增 加’結果’由於藉由稜鏡片而朝液晶顯示裝置的正面方向 (面光源的光射出面之法線方向T)W外的方向彎曲的光成 刀增加，而有無法充分地提高液晶顯示裝置正面方向的亮 度及對比度的傾向。半峰半寬度丨|較佳係25。以 下。 在平面W之面光源的光強度分佈只要滿足上述（1)及 (2) ’不論具有何種光分佈特性皆可，但較佳係在射出角度 -40至40°的範圍内不具有顯著的波峰者。因為此種波峰有 無法藉由稜鏡片而適切地朝液晶顯示裝置的正面方向被集 光的傾向。 於此，可採用複數個平面作為與稜鏡狀突起的稜線方 向垂直之平面w，而在本發明中，只要在至少任一個平面评 中滿足上述式（1)及（2)即可。不過，為了在液晶顯示裝置 的整個表面範圍内達成足夠高的亮度及對比度，較宜在任 二個以上之與稜鏡狀突起的稜線方向垂直之平面W中滿足 上述式（1)及（2)。 r S 1 322121 27 201107837 可藉由使用市售的亮度測定裝置測定面光源的亮度而 獲得面光源的光強度分佈。 可採用使用擴散板的直下型光源、使用導光板的側邊 (edge)型光源等作為面光源，但為了實現如上述的配光特 性，較宜使用如第1圖所示之具備導光板22以及配置於導 光板22側方的光源裝置21之側邊型光源（面光源20)。可 使用例如由丙烯酸系樹脂等透明樹脂所構成之平板狀或楔 形狀構件作為導光板22。在導光板的内面或兩面，藉由使 用油墨的網版印刷或蝕刻、喷砂（blast)加工而賦予圖案。 此外，在導光板的内面或兩面，有時亦構成具有反射功能 的微小反射元件、微小折射元件等。適當地調整該等導光 板的内面或兩面的形狀或元件，可獲得所期望的配光特 性。更具體而言，可適當地利用例如Toray Research Center 株式會社刊「液晶背光的最新技術第4章」或CMC出版株 式會社刊「液晶顯示器用背光技術第2編第1章、第4編 第1章」中所記載的光源裝置。 可使用將LED等點狀光源予以線性排列而成的光源裝 置或由冷陰極管等棒狀光源所構成之光源裝置作為光源裝 置21。在本發明之液晶顯示裝置中，面光源可具有配置於 導光板的一邊之一個光源裝置，或者亦可具有配置於導光 板相對向的兩邊之二個光源裝置。 侧邊型光源所具備的將點狀光源予以線性排列而成的 光源裝置或由棒狀光源所構成之光源裝置係較宜配置成與 稜鏡片所具有的稜鏡狀突起之稜線平行或約略平行。依此 28 322121 201107837 配置，侧邊型光源發出的光可藉由稜鏡片而最有效率地聚 集。 在本發明之液晶顯示裝置中，關於上述說明以外的構 成’可採用以往公知的適宜構成。舉例而言，本發明之液 晶顯示裝置亦可進一步具備光擴散板、光擴散片、反射板 等。 [實施例] 以下係列舉實施例以進一步詳細說明本發明，惟本發 明不受該等實施例所侷限。 (製造例1 :偏光膜的製作） 將平均聚合度約2400、皂化度99.9莫耳％ (mole%) 以上之尽度7 5 m的聚乙婦醇膜浸潰於3 0 °C的純水中後， 在30C浸潰於碘/碘化鉀/水的重量比為〇· 02/2/100的水 岭液中。之後，在56. 5。(：浸潰於破化鉀/硼酸/水的重量比 為12/5/100的水溶液中。隨後，在代的纯水中洗淨後， 在65°C進行乾燥’獲得使魏附配向於聚乙烯醇的偏光 ^。延縣要餘㈣色及猶絲步財 倍率為5.3倍。 (製造例2:紫外線硬化型接著劑的調製） 將日本環氧樹脂（股）所製之屬於氣化; 名「EpiC〇atYX_G」（其為核氫化雙紛A之 具右钧？g/壹I沾樓_' I 322121 201107837 The shaft extension can be extended to a single axis between rolls with different circumferential speeds, or it can be extended to a single axis by using a hot roller. Further, it is possible to use a dry stretching which is extended in the atmosphere, and it is also possible to use a wet stretching which is extended in a state where it is swollen in a solvent. The stretching ratio is usually about 3 to 8 times. In the dyeing treatment step, the dyeing by the dichroic dye of the polyvinyl alcohol-based resin film can be carried out, for example, by impregnating the polyvinyl alcohol-based resin film in an aqueous solution containing a dichroic dye. . For example, iodine, a dichroic dye or the like can be used as the dichroic dye. The dichroic dye may include, for example, a dichroic direct dye formed from a disazo compound such as CI DIRECT RED 39; a dichroic property formed from trisazo or tetrazo compound. Direct dye. Further, the polyvinyl alcohol-based resin film is preferably subjected to impregnation in water before the dyeing treatment. In the case where iodine is used as the dichroic dye, a method in which a polyvinyl alcohol-based resin film is impregnated into an aqueous solution containing iodine and potassium iodide to carry out dyeing is usually employed. 5至20重量份。 The amount of the iodine is usually 0.5 to 20 parts by weight per 100 parts by weight of water. In the case where iodine is used as the dichroic color, the temperature of the aqueous solution used for dyeing is usually 20 to 40 ° C, and in addition, the immersion time (dyeing time) immersed in the aqueous solution is usually 20 to 1800 seconds. On the other hand, in the case where a dichroic dye is used as the dichroic dye, a method in which a polyvinyl alcohol-based resin film is impregnated into an aqueous solution containing a water-soluble dichroic dye to perform dyeing is usually employed. In the aqueous solution, the content of 10 322121 201107837 is usually _ part, per 1 GG parts by weight of water, preferably 1 xi 〇 2 parts by weight, particularly preferably 3 to X parts. The aqueous solution may also contain a sulfuric acid (IV) inorganic salt as a dye h'-use-color dye as a dichroic dye, and the temperature of the dye aqueous solution used for dyeing is usually 2 Torr to 赃, and further, immersed in the aqueous solution. The immersion time (dyeing time) is usually 10 to 1800 seconds. The boric acid treatment step is carried out by subjecting the dichroic dye to a significant aqueous solution. In the following: There is: 1 to 15 parts by weight, preferably 5 to 12 parts by weight, per 1 part by weight of water. In the case where iodine is used as the dichroic dye in the above dyeing treatment step, the aqueous solution containing the caustic acid used in the treatment step preferably contains potassium molybdate. In this case, the amount of deuterium in the aqueous solution containing boric acid is usually (U to 15 parts by weight, preferably 5 to 12 parts by weight per part by weight per 10 parts by weight of water. In the aqueous solution containing __ The immersion time is usually from 60 to sec., preferably from 150 to sec, more preferably from 200 to 4 sec. The temperature of the aqueous solution containing the acid is usually above 5%, and is more than 5G to 80°. C. The subsequent washing treatment step is carried out by immersing the above-mentioned Wei-treated polyethyl alcohol green lye in, for example, a water towel, and the water temperature is usually 5 to muscle in the water washing treatment. The dipping time is usually from 1 to 120 seconds. After the water washing treatment, drying treatment is usually performed to obtain, and the drying treatment of the film 1 can be performed, for example, by a hot wire machine, far-infrared heating, β, etc. The drying treatment temperature is usually 3 G to (10), c, preferably 5〇322121 11 201107837 to 80 C. The drying treatment time is usually 6〇 to 6〇〇 seconds, preferably to 600 seconds. In this way, the ^^ women's drunkenness resin film is applied. Uniaxial extension, dyeing with 'one color pigment, boric acid treatment and water washing A polarizing film is obtained, and the thickness of the polarizing film is usually in the range of 5 to 4 Å/m (the cymbal). The cymbal sheet 13 for the back side polarizing plate has a ridge-like projection (a ridge 13a) The surface of the salty surface (the surface of the crucible) is laminated on the polarizing film 12 so that the surface opposite to the surface of the crucible is opposed to the polarizing film 12. The crucible 13 having the crucible surface is disposed. On the surface of the back side polarizing plate, the prism surface is opposed to a surface light source, which will be described later, and the direction of light emitted from the light exit surface of the surface light source (the surface facing the side of the surface) can be changed conceivably. According to the invention, the light emitted from the surface light source, in particular, the light having the directivity can be emitted by the above-mentioned cymbal [the main emission direction is the normal direction of the light exit surface of the surface light source (the front direction of the liquid crystal display device) The emission direction of the light emitted in a different direction is shifted toward the front direction of the liquid crystal display device, whereby the brightness and contrast of the front surface of the liquid crystal display device can be improved. Further, the ruthenium sheet 13 also functions as a protective film for the polarizing film 12. function Here, the so-called "bump-like projection" is intended to mean that a triangular shape (which may be included in a part of a slightly triangular shape including a curved shape, a sawtooth shape, or the like) is displayed in a trajectory that moves parallel to a direction perpendicular to the triangular-shaped surface. a portion of the columnar body that is sandwiched between the sides (ridge lines) that do not form the two sides of the bottom surface (the diagonal path of the bottom edge of the triangular shape); the facets are opposite to the column shape 12 322121 201107837 The surface of the body-shaped protrusion (the trajectory of the bottom edge of the triangular shape) is a bottom surface which is in parallel with a plurality of the columnar bodies and arranged in parallel, and the plurality of dome-shaped protrusions are oriented in a single direction (so that The ridgelines of the prismatic projections are arranged in parallel or slightly parallel. Fig. 3 is a schematic perspective view showing an example of the surface shape of the ridges, and the cross-sectional shape of the ridges is a two-sided triangle. The apex angle (the angle of the apex) of the ridge 13a of the cymbal 13 may be, for example, 30 to 100°, and in the present invention, in order to emit light from the surface light source, particularly, the directional light is emitted. It is efficiently biased to the front direction of the liquid crystal display device, and particularly preferably 60° or more and 100° or less, more preferably 60° or more and 80° or less. The height of the dome 13a may be, for example, 100 to 200 /z m. Further, the pitch of the beak-like projections 13a (the distance between the ridgelines of the adjacent projections) is appropriately determined in consideration of the vertex angle and height of the conical projections 13a, and may be, for example, 5 to 300 / zm. The two sides of the protrusion in the cross-sectional triangular shape constituting the beak-like projection 13a may have the same length or may have different lengths, but at least in the case where the light source device of the surface light source used is disposed on both sides of the face of the light guide plate. Preferably, the two sides are the same length, and therefore, the cross-sectional shape of the beak-like projection 13a is preferably a two-sided equilateral triangle. The heights of the plurality of braided projections 13a may all be the same or different. Further, the shape of the groove formed between the protrusions may be a straight line or a curved line. Various materials known in the art can be used as the material of the cymbal sheet 13. For example, a polyolefin resin such as polyethylene or polypropylene; a polyethylene terephthalate f 13 322121 201107837; a polyethylene resin; a polyethylene naphthalate; Polycarbonate-based resin, norbornene-based resin, polyamine-based resin, acrylic resin, polymethylmethacrylate-based resin, polystyrene-based resin, mercapto-acrylic acid-methyl vinegar- A synthetic polymer such as a styrene-based copolymer, an acrylonitrile-butadiene-styrene copolymer, an acrylonitrile-stact ethylene copolymer, or a natural polymer such as a cellulose diacetate resin or a cellulose triacetate resin. Among them, 'from the viewpoints of transparency, moisture permeability, and productivity', it is suitable for a polyolefin warp resin, a polypropylene resin, a polycarbonate resin, a polyester resin, a polystyrene resin, or a sulfhydryl group. Any of thermoplastic resins such as decyl acrylate-based ethylene copolymer, acrylonitrile-butadiene-styrene-based copolymer, and acrylonitrile-styrene copolymer. Further, if necessary, these polymer materials may contain an ultraviolet absorber or an additive such as an antioxidant or a plasticizer. When the transparent sheet material is used as the substrate, the ruthenium sheet 13 can be produced by a photopolymer method, a pr〇 file extrusion method, a press molding method, an injection molding method, or a roll transfer method. A known method such as a laser ablation method, a mechanical cutting method, or a mechanical grinding method is used. These methods may be used individually or in combination of two or more methods. The thickness of the lens 13 is not particularly limited. However, from the viewpoint of reducing the thickness of the polarizing plate, it is preferably about 2 〇 #m or more and 2 〇〇 or less, more preferably 3 〇 #m or more, loo^. m or less. (Resin film) As an example shown in Fig. 2, a resin such as a protective film or an optical compensation film may be laminated on the surface of the polarizing film 12 opposite to the surface on which the dicing sheets 322121 14 201107837 are laminated. In this case, the polarizing plate is bonded to the liquid crystal cell via the adhesive layer laminated on the resin film 15 . Further, an optical functional film to be described later may be laminated on the polarizing film 12 or the protective film or the optical compensation film via an adhesive layer or an adhesive layer. The resin film 15 includes a cellulose resin film such as a cellulose acetate film (TAC film), a polyolefin resin film, an acrylic resin film, polyethylene terephthalate, or the like. A polyester resin film, etc. The cellulose resin which comprises the said cellulose-type resin film is a cellulose, and a hydrazine ester or a fully esterified product, for example, cellulose acetate, a propionate, and a butyrate, And such mixed esters, etc., more specifically, J cattle such as vinegar I cellulose, cellulose diacetate, cellulose acetate propionate, cellulose succinate, etc. A film-forming method is used as a film, and a known method such as a solvent casting method or a melt extrusion method is used. A commercially available product of a fiber or a ruthenium-based resin film can be exemplified by "such as "additional deletion" (rich shares). Manufacturing), "Fuji TacTD8_" (Fuji Film Co., Ltd.) ^ Fuji TacTD80UZ" (made by Fujifilm Co., Ltd.), "Κ8υχ2Μ" 1N"Kagoda Mindalt〇 〇pt〇 (share) system KC8UY" (Konica Minolta Precision Optics In the optical compensation film formed of the cellulose resin film, the film of the one-dimensional system of the film contains a phase change adjustment function. A film having a phase difference adjustment function is applied to the surface of the plate and the resin film; and the cellulose resin film is uniaxially stretched or biaxially stretched [film of 322121 15 201107837 7 pieces or the like. Commercially available optical compensation made of a cellulose-based resin film, such as "WV BZ 438" and "WV EA" manufactured by Shishi Film Co., Ltd.; Konica Minolta Precision Optical Co., Ltd. "KC4FR-1" and "KC4HR-1" manufactured by the company. The thickness of the protective film or the optical compensation film formed of the 々 &amp; cellulose resin film is particularly limited, but is preferably in the range of 2 q to more preferably in the range of 30 to 90. In the case where the thickness is not reached, the film may be treated differently. In the case where the thickness exceeds 9 Å/zm, the workability is deteriorated, and the thickness and weight of the obtained polarizing plate are disadvantageous.光学σ The optical compensation film formed of the above-mentioned polyfluorene-based resin film may, for example, be a cyclic or biaxially stretched cyclic hydrocarbon-based resin film. In the case of a large liquid, a liquid crystal panel for a television (especially a liquid crystal panel having a liquid crystal of a vertical alignment (five) mode), an extension of the % ene-based resin film is also suitable as an optical property and a long-lasting property. The above optical compensation film. Here, the term "a olefin resin film" as used herein means, for example, a thermoplastic resin having a monomer monomole formed from a cyclic olefin (cycloolefin) such as a norbornene or a polycyclic norbornene-based monomer. The film formed. The cycloolefin resin film may be a hydrogenated product of a ring-opening polymer using a single cyclic olefin, or a hydrogenated product of an open-loop fiber using two or more cyclic anthracene hydrocarbons, or a hydrocarbon and a chain hydrocarbon and 7 or An addition copolymer having an aromatic compound such as a vinyl group. In addition, it is also effective to introduce a polar group into the main chain or the side chain. Commercially available thermoplastic cycloolefin resins include "Topas" sold by the German company T〇pAS ADVANCED POLYMERS _ company, ART0N sold by JSR (shares), and "ze〇n〇r" sold by Japan Zeon (shares) And "ΖΕ〇ΝΕχ", 322121 201107837 Mitsui Chemicals Co., Ltd. sells "APEL" (all are trade names), etc., which can be used locally. This cycloolefin resin is subjected to a cycloolefin resin film. The solvent casting method and the &quot; method should be used as the film forming method. In addition, "Escena and "sc", such as the "face (10) film sold by Sekisui Chemicals Co., Ltd., "product name"), which are sold by well-known industries (shares), etc. Membrane" (white - used. This can also be appropriately applied: the light plate _ chemical and lightweight will be unfavorable, etc., so =: to use in this hair ^ partial wire can be attached to the above polarizing film by the sheet Side &amp; Using the above-mentioned two figures, a polarizing plate in which the mirror lens 13 is formed by the adhesive layer 14 = 'refer to the first surface is obtained. The polarizing film 12 is formed on the side of the resin 臈15 γ first film 12 It is carried out with a further adhesive agent of the tree slabs. The adhesive is formed in the same manner as in the case where the film 15 is bonded to the polarizing film 12, and the resin adhesive is also used. It may be a different type of adhesive. The type of the carrier may be a water-based adhesive, that is, an adhesive which is bonded to water, and a hardening-dissolving or dispersing layer may be used. From the viewpoint of thinning, it is preferable to use the above-mentioned ^ Γ C 1 322121 17 201107837 the following agent. The water-based splicing resin - poly lysine into": In the form, the melamine, the beryllium polyethylene, the acetonitrile, the polyethylene, the polyethylene, the poly-ethylene glycol, the amine-modified poly-ethylene, etc. The alcohol resin is prepared as an aqueous solution of a polyethylene glycol resin as an adhesive agent. The phase = water for re-reading, and the degree of U of the polyethylene resin in the adhesive is 10 parts by weight 'preferably about 1 Up to 5 parts by weight. Lifting = thin: _ is an adhesive for the adhesive component, in order to add a hardening component such as glyoxal or a water-soluble epoxy resin or a bridging agent. For example, a polyamine polyamine (polyamide) obtained by reacting a polyalkylene polyamine such as diethylenetriamine or triethylenetetramine with a dicarboxylic acid such as adipic acid can be suitably used. Polyamine-based polyamine epoxy resin obtained by reacting epigas alcohol in a polyamine. The commercial products of these polyamidamine polyamine epoxy resins include "Sumiraze resin 650" sold by CHEMTEX. Sumiraze resin 675", "WS-525" sold by Japan PMC (shares), etc. Relative to 100 parts by weight of polyvinyl alcohol tree The fat, the amount of the curable component or the bridging agent added (in the case of co-addition, the total amount) is usually from 1 to 100 parts by weight, preferably from 1 to 50 parts by weight. The above-mentioned hardening component, bridging agent When the amount of addition is less than 1 part by weight based on the weight of the polyvinyl alcohol-based resin, the effect of the adhesion improving effect is small 322121 201107837. In addition, the amount of the curable component and the bridging agent added is relative to When the weight ratio of the polyethylene resin is more than the weight part, the adhesive layer tends to be embrittled. Further, in the case of using an amine-based resin as an adhesive component, examples of a suitable adhesive composition include a mixture of a poly-I-based ionic polymer-type amine vinegar resin and a compound having a glycidyloxy group (glycidy1〇xy). . Here, the "poly I-based ionic polymer type amine vinegar resin" is an amine vinegar having a vinegar skeleton, and a small amount of an ionic component (a hydrophilic component) is introduced into the skeleton. Since the plasma polymer type amine is intended to be emulsified directly into water as an emulsion without using an emulsifier, it is suitably used as a water-based adhesive. For example, Japanese Laid-Open Patent Publication No. Hei 7-97504 discloses an example of a polymer dispersant for dispersing a viscous resin in an aqueous medium. JP-A-2005-81817 discloses a mixture of a polyester-based ionic polymer type amine ester resin and a compound having a glycidoxy group as a binder to form a cyclic olefin. The resin film is bonded to a polarizing film made of a polyvinyl alcohol-based resin. As a method of applying an adhesive to a polarizing film and/or a member (a sheet, a protective film, or an optical compensation film) bonded to the polarizing film, a conventionally known method can be cited as casting. Method, Meyer bar coat method, Gravure coat method, c〇inma coater method, doctor blade method 'Mold coating Method (die coat method), dip coat method, spray method, and the like. The so-called "casting method" is a method in which the film belonging to the object to be coated is moved in a direction perpendicular to the direction of the deflection between the two, and the adhesive is applied to the surface of the film. After the application of the adhesive, the members of the polarizing film and the light-adhering film are superposed, and the bonding of the two = film is performed by rolling (niper) or the like. For example, 'the bonding of the film using the rolling crepe can be carried out: after the lining of the adhesive, using a roller or the like. In the coating method; after applying the adhesive, the side of the roller is 襁-, / The loading wheel is pressed and pressurized to be opened. In the fortune, you can ❹ = the material of the wheel. In addition, the glue can be made of the same material or a different material. The wheel T is after the above-mentioned bonding, and the polarizing plate can be obtained by drying. The temperature of the treatment W is, for example, blown down and the temperature is usually 4 . to·. Within the range, the drying time is usually ~ to the lake seconds. After drying, the #1 layer thickness shirt "· Xie to 0. 01 to 2 / / m ' is better 0.0! $] Ping Yu live horse 1. The thickness of the adhesive layer after drying is less than 0.001 In the middle, the right aunt + r has a problem that the receiver becomes insufficient*, and if the adhesive layer is dry and the appearance of the A c board is poor, the 5'' is polarized, dry, Before the curing, the thickness of the adhesive layer after bonding using the above-mentioned rolling contact is preferably one or less, and more preferably 0.01 or more. After the drying treatment, it may be applied at a temperature above room temperature for at least half a day, usually It is a heat of more than one day to obtain sufficient bonding strength. Typically, the aging is carried out in a state of being wound into a roll. Preferred aging is 322121 20 201107837 The temperature is in the range of 30 to 5 (TC, More preferably, it is in the range of 35 to 45 〇c. The ripening temperature is in the range of τ, and it is easy to produce the "rolling phenomenon" in the state of the roll. In addition, the humidity at the time of ripening is not particularly limited. However, it is better to choose a relative humidity in the range of about G lion to RIJ. The cooking time is usually about 1 day to 1 day, In addition, the photocurable adhesive may, for example, be a mixture of a photocurable epoxy resin and a photocationic polymerization initiator, etc. The photocurable epoxy resin may, for example, be an alicyclic ring. An oxy-resin, an epoxy resin having no alicyclic structure, a mixture thereof, etc. The photocurable adhesive may contain an acrylic resin or oxetane (0Xetane) in addition to the photocurable epoxy resin. a resin, an amine ester resin, a polyvinyl alcohol resin, or the like, and may further contain a photocationic polymerization initiator and a photoradical polymerization initiator, or may contain a photoradical instead of a photocationic polymerization initiator. In the case of using a photocurable adhesive, a photocurable adhesive is applied to a polarizing film and/or a member bonded to the polarizing film (a sheet, a protective film or an optical compensation film). After bonding the polarizing film and the member bonded to the polarizing film, the photocurable adhesive is cured by irradiation of the active energy ray. The method of applying the photocurable adhesive and the bonding method of the film can be performed. with water The source of the active energy ray is not particularly limited, but is preferably an active energy ray having a luminescent distribution at a wavelength of 400 nm or less. Specifically, a low-pressure mercury lamp, a medium-pressure mercury lamp, a high-pressure mercury lamp, and an ultra-high pressure are preferably used. Mercury lamp, chemical lamp, black light lamp 'Microwave-excited mercury lamp, metal halide lamp, etc. The intensity of light irradiation of the photocurable adhesive is not particularly limited, and the root is E 322121 21 201107837. (4) It is appropriately determined, but it is preferable that the intensity of the wavelength in the wavelength region of the poly (amplifier) is (M to circle (4) / (10). In the case of (4) the degree of interest is Μ·], the reaction The time is not too long', and in the case where the irradiation intensity is 6000 mw/cm2 or less, 'from the time when the heat is hardened from the * source material W and the photocurable adhesive is cured, the % oxygen resin is yellowed. Or the problem of deterioration of the polarizing film is not particularly limited as to the light irradiation time of the photocurable adhesive, and is controlled according to the leveling property of the f-gradation (4), but it is preferable to set the cumulative amount of light (the table thereof) The above irradiation And the product of the exposure time) becomes 10 to 10000 mj / m. In the case where the cumulative amount of light irradiated to the photocurable adhesive is 1 Å or more, a large amount of activity derived from the polymerization initiator can be generated, and the kind of the curing reaction can be more reliably performed, and in addition, the photocuring property is improved. In the case where the accumulated light amount of the subsequent order irradiation is 1 GGGG mJ/m 2 or less, the irradiation time is not excessively long, and good productivity can be maintained. ... in the case where the photocurable adhesive is cured by irradiation with an active energy ray, it is preferable that the polarizing degree, transmittance, and hue of the polarizing film, and transparency of the prism sheet, the protective film, and the optical refractory film are The functions of the polarizing plate are hardened without being lowered. Further, before the ruthenium is attached to the polarizing film by silk or optical compensation, in order to improve the adhesion, the plasma treatment may be performed on the surface of the polarizing film and/or the member attached to the film. Surface treatment such as corona treatment, ultraviolet irradiation treatment, flame treatment, and saponification treatment. As an intensive processor, Kexian is a method of immersing in an aqueous alkaline solution of hydroxyxanthene or hydroxide. 322121 22 201107837 Further, as described above, the back side deflecting plate may have an optical functional film laminated on the surface of the polarizing film 12 opposite to the surface on which the tantalum sheet 13 is laminated. The optical functional film may, for example, be an optically compensated enamel obtained by applying a liquid crystal compound to the surface of the substrate; allowing some kinds of polarized light to penetrate and exhibiting an opposite property to the polarized light described above. a reflective polarizing film that reflects polarized light; a retardation film made of a polycarbonate resin; a retardation film made of a cycloolefin-based resin film; and a film having an anti-glare function having an uneven shape on the surface; A film with a surface anti-reflection function; a crucible having a reflective function on the surface; and a semi-transparent reflective film having both a reflective function and a penetrating function. A commercially available product of an optical compensation film obtained by applying a liquid crystal compound to a surface of a substrate, for example, "wv film" (manufactured by Chang Shi Film Co., Ltd.) and "NH film" (new sakamoto oil) (manufacturing), "NR film" (manufactured by Nippon Oil Co., Ltd.), etc. A commercially available product of a reflective polarizing film that reflects a certain type of polarized light and reflects polarized light having the opposite property to the polarized light, for example, "DBEF" (manufactured by 3M Company, Japanese is purchased from Sumitomo 3M (shares) and so on. In addition, as a commercial item of the retardation film which consists of a cyclic-hydrocarbon resin film, the "ART0N film" (made by JSR (share)), "Escena" (made by Sekisui Chemical Industry Co., Ltd.), "ZE0N0R film" (made by Japan Zeon Co., Ltd.). The back side polarizing plate preferably has an adhesive layer for bonding to the liquid crystal cell on the surface opposite to the prism sheet. As the adhesive used for such an adhesive layer, a conventionally known suitable adhesive can be used, and examples thereof include an acrylic adhesive, an amine ester adhesive, and a silicone adhesive. Among them, 'from the viewpoints of transparency, adhesion, reliability, reworkability, etc.' f 23 322121 201107837 It is preferred to use an acrylic adhesive. The adhesive layer can be applied by, for example, preparing an adhesive such as an organic solvent solution, applying it to a substrate film (10) such as a polarizing material by die coating or gravure coating, and drying it. In addition, it can be laid by the following method: the plaque-like adhesive formed on the plastic film (called separate filn) which is subjected to the treatment of $: is applied to the base (4). The thickness of the material (4) is not particularly limited to the range of 2 to 40 lm. <Front side polarizing plate> The front side polarizing plate (the polarizing plate 2 of the 1st towel) is a polarizing plate which is disposed on the side opposite to the surface light source (visual side) on the basis of the riding unit. A conventionally known suitable polarizing plate can be used as the front side polarizing plate. For example, in addition to the polarizing plate of the protective film formed of cellulose triacetate or the like on the one-sided or double-area layer of the polarizing film, anti-glare treatment, hard coating treatment, and anti-reflection treatment may be used. Polarized plates, etc. Further, it may be a polarizing plate made of a protective film or an optical compensation film made of a polyethylene terephthalate film, an acrylic film, a polypropylene film or the like in a single-layer layer of a polarizing film. <Surface light source> The liquid crystal display device of the present invention is provided with a surface light source 20 for uniformly illuminating the liquid crystal panel. In the present invention, in order to maximize the function of the cymbal (the function of deflecting the light emitted from the surface light source and correcting the direction of the light emitted from the ridge protrusion toward the front surface of the liquid crystal display device) A surface light source having specific light emission characteristics (light distribution characteristics) is used as the surface light source 2〇. More specifically, referring to Fig. 4, the normal of the light exit surface of the light source of 24 322121 201107837 in the surface light source used in the present invention, which is perpendicular to the ridgeline direction of the ridges of the cymbal. The light intensity distribution of the surface light source showing the angle of incidence of the light intensity of the emitted light when the angle τ and the exit direction of the surface light source are the first to be emitted as the output angle (only = 〇) The following (1) and (2). (1)...θ&lt;, are satisfied. Or 4〇. <(4). Van: the maximum value of the two light intensity is the highest peak; = when the maximum value of the light intensity is shown to be the highest in the wave bee === degrees as the heart' and will show the aforementioned wave Light intensity η:, - Again, the range in which the angle of incidence θ can be taken is -9 〇, θ. . θ is 1. = The square of the light emitted by the two light sources and the light of the surface light source are determined to be in the same direction.卜一9 "System means that in the plane W, the direction M of the emitted light of the two-spin Si source is reversed with respect to the normal direction". The angle of the angle is M. The meaning of the line is *' The direction M of the emitted light of the surface light source is rotated by (or counterclockwise) 9 〇 β with respect to the normal direction. :: There is a light exit surface compared to the surface light source: the line direction τ is When the light whose distance = Μ (the absolute value of the emission angle 0 is large) is incident on the ridge-like protrusion 13a of the rib, as shown in the fifth _ schematically, the oblique side of the ray-emitting ridge protrusion 13a p and (4) the oblique side p = can be collected in the front direction of the liquid crystal display device (the light of the surface light source emits the polarized light ^ direction T). That is, in the liquid crystal display device using the back side first plate provided with the prism sheet, Such a light system having a light source (1) 322121 25 201107837 which is opposite to the surface light source is a light source system in which the normal direction τ is farther away from the emission direction M (the absolute value of the emission angle θ is larger), and the front direction of the liquid crystal display device can be greatly improved. Brightness and contrast. The inventors have found that the following light intensity distribution characteristics are displayed [full The above condition (1)] [i.e., (4): in the plane... in θ &lt;, or 40. 2 cloth: 巳 巳 (in other words, the absolute value of the exit angle 丨 θ | is 40. &lt; | In the range of θ I full, the surface light source having the highest peak of the light intensity is the light source that constitutes the peak is effectively collected by the ruthenium in the front direction of the liquid crystal display device ( Since the normal direction of the light exit surface of the surface light source is Τ), the brightness and contrast in the front direction of the liquid crystal display device can be extremely effectively improved. Further, the lower limit and the upper limit of the emission angle 考虑 considered in the above condition (1) are respectively set to The reason of 80. and 80 is that it is difficult to accurately measure the light intensity at an angle exceeding the lower limit and the upper limit, and it is not practical to use it. The peak of the maximum value of the light intensity is preferably 50. I Θ | In the range of $80°, the better is in the range of 6〇.$丨0 | $8〇. In addition, the inventors have found that the maximum value of the above light intensity is the width of the highest peak (wide) Degree) brightness of the front side of the liquid crystal display device And the contrast also causes f彡. That is, in the light intensity distribution of the plane of the plane w Μ, when the maximum value of the light intensity in the peak with the highest value of the light intensity is shown as 0 a And when the angle of 1/2 of the maximum intensity of the light intensity in the peak is shown as ΘΙ3, if the half width at half maximum 丨0a_0b 丨 is less than 3〇β [= 322121 26 201107837 The condition (2)] is not greatly adversely affected by the light having a small absolute value of the emission angle $, and can be concentrated by the light collection of the light near the exit angle of the main emitted light. Party and contrast in direction. Relatively in the case of 'half-width half-width 丨0 &amp;-called above or no 6b (for example, the wave ♦ is a very gentle wave, and in the range of -80. $ θ sub. In the case where the value of 1/2 is not present on the peak), the light component which has a smaller absolute value of the emission angle 附近 near the bottom of the peak having the highest peak value of the light intensity increases the 'result' The light that is bent in the direction other than the front direction of the liquid crystal display device (the normal direction T of the light exit surface of the surface light source) W is increased by the squeegee, and the brightness and contrast in the front direction of the liquid crystal display device cannot be sufficiently improved. Propensity. Half-width half-width 丨| the following. The light intensity distribution of the light source on the plane of the plane W may be any as long as it satisfies the above (1) and (2) ', but preferably does not have a significant range in the range of the injection angle of -40 to 40°. Crests. Since such a peak has a tendency to be collected by the ruthenium in a proper direction toward the front surface of the liquid crystal display device. Here, a plurality of planes may be employed as the plane w perpendicular to the ridgeline direction of the meandering protrusions, and in the present invention, the above formulae (1) and (2) may be satisfied in at least one of the planes. However, in order to achieve a sufficiently high brightness and contrast over the entire surface of the liquid crystal display device, it is preferable to satisfy the above formulas (1) and (2) in any two or more planes W perpendicular to the ridgeline direction of the dome-like projections. . r S 1 322121 27 201107837 The light intensity distribution of the surface light source can be obtained by measuring the brightness of the surface light source using a commercially available brightness measuring device. A direct-type light source using a diffusing plate, an edge-type light source using a light guide plate, or the like may be used as the surface light source. However, in order to realize the light distribution characteristics as described above, it is preferable to use the light guide plate 22 as shown in FIG. And a side light source (surface light source 20) disposed on the light source device 21 on the side of the light guide plate 22. As the light guide plate 22, a flat plate-like or wedge-shaped member made of a transparent resin such as an acrylic resin can be used. The pattern is imparted on the inner surface or both sides of the light guide plate by screen printing using etching or etching or blast processing. Further, on the inner surface or both surfaces of the light guide plate, a minute reflection element, a minute refractive element, or the like having a reflection function may be formed. The desired light distribution characteristics can be obtained by appropriately adjusting the shape or elements of the inner or both sides of the light guide plates. More specifically, for example, Toray Research Center Co., Ltd., "The Latest Technology of Liquid Crystal Backlight, Chapter 4" or CMC Publishing Co., Ltd., "Backlight Technology for Liquid Crystal Display, Chapter 2, Chapter 1, Section 1 The light source device described in the chapter. A light source device in which a point light source such as an LED is linearly arranged or a light source device including a rod-shaped light source such as a cold cathode tube can be used as the light source device 21. In the liquid crystal display device of the present invention, the surface light source may have one light source device disposed on one side of the light guide plate, or may have two light source devices disposed on opposite sides of the light guide plate. The light source device comprising the linear light source arranged by the side light source or the light source device formed by the rod light source is preferably arranged parallel or approximately parallel to the ridgeline of the dome-like protrusion of the cymbal sheet. . According to the configuration of 28 322121 201107837, the light from the side light source can be gathered most efficiently by the cymbal. In the liquid crystal display device of the present invention, a configuration other than the above description can be employed in a conventionally known configuration. For example, the liquid crystal display device of the present invention may further include a light diffusing plate, a light diffusing plate, a reflecting plate, and the like. [Examples] The following examples are given to further illustrate the present invention, but the present invention is not limited by the examples. (Production Example 1: Preparation of polarizing film) A polyglycol film having an average degree of polymerization of about 2400 and a degree of saponification of 99.9 mol% or more was immersed in pure water at 30 ° C. After the middle, it was immersed in a talc solution having a weight ratio of iodine/potassium iodide/water of 〇·02/2/100 at 30C. After that, at 56.5. (: immersed in an aqueous solution of deuterated potassium/boric acid/water in a weight ratio of 12/5/100. Then, after washing in purified water, it is dried at 65 ° C to obtain Wei Polarization of polyvinyl alcohol ^. The remaining (four) color and the weight of the jujube step are 5.3 times. (Manufacturing Example 2: Preparation of ultraviolet curing type adhesive) ; "EpiC〇atYX_G" (it is the nuclear hydrogenation double A's right 钧?g/壹I沾楼_

化環氧樹脂的商品 1之--縮水甘油驗， 3本曹達（股）所 「Cl5i〇2」4. 〇 g、 「CS7001 322121 29 201107837 1. 0 g予以量取至1〇〇 ffll可拋棄式杯具中，使其混合、脫 泡，藉此調製紫外線硬化型接著劑。 (製造例3 :稜鏡片1的製作） 將已熔融之聚丙烯樹脂塗佈於預先設計成使成形後的 稜鏡狀突起（剖面形狀為二等邊三角形）之間距為50#m及 頂角為65°的模具，進行加熱且同時加壓。然後’從模具 剝離後’立即冷卻至6〇。〇，以獲得由聚丙烯樹脂所構成之 稜鏡片1 °所有稜鏡狀突起皆具有按照設計的形狀。稜鏡 片1的折射率為1 49。 (製造例4 :稜鏡片2的製作） 將具有以下所示組成之紫外線硬化型樹脂組成物塗佈 於預先設計成使成形後的棱鏡狀突起（剖面形狀為二等邊 三角形）之間距為50 及頂角為65。的模具，使其表面平 滑化後，將厚度188/zm的聚對苯二曱酸乙二酯膜重疊於由 紫外線硬化型樹脂組成物所構成之層上。接著，以累積照 射量為1000 mj/cm2的方式照射波長32〇至39〇 nm的紫外 線，使紫外線硬化型樹脂組成物硬化。之後，藉由從模具 剝離，而獲得在㈣m乙二§旨膜上積層著具有棱鏡 狀突起的紫外線硬化型樹脂組成物之硬化物層的稜鏡片 2。任-稜鏡狀突起皆財按照設計的形狀。稜鏡片2之棱 鏡狀突起的折射率為1. Μ。 (用於製造例4的紫外線硬化賴脂組成物之組成） FANCRYL FA-321M (日立化成公司製造環氧乙烷 (ethylene oxide)改質雙酚a甲基丙烯酸酯）奶重量份 32212] 30 201107837 %/ M ESTER A-BPE-4 (新中村化學公司製造環氧乙燒改質 . 雙酚A二丙烯酸酯） 25重量份Compressed epoxy resin product 1 - glycidol test, 3 Cao Da (stock) "Cl5i〇2" 4. 〇g, "CS7001 322121 29 201107837 1. 0 g to be measured to 1〇〇ffll can be discarded In the cup, the ultraviolet curable adhesive is prepared by mixing and defoaming. (Production Example 3: Preparation of the sheet 1) The molten polypropylene resin is applied to the edge which is designed in advance to be formed. The mold-like protrusions (the cross-sectional shape is a two-sided triangle) are 50#m and the apex angle is 65°, and are heated and simultaneously pressurized. Then, after 'detaching from the mold,' it is cooled to 6 立即 immediately. The ruthenium sheet made of polypropylene resin was obtained in a shape of 1 °, and all of the ridges had a design shape. The refractive index of the cymbal sheet 1 was 1 49. (Production Example 4: Production of cymbal 2) The composition of the ultraviolet curable resin composition is applied to a mold which is designed in such a manner that the distance between the formed prism-shaped projections (the cross-sectional shape of the equilateral triangle) is 50 and the apex angle is 65, and the surface is smoothed. Polybutylene terephthalate with a thickness of 188/zm The film is superposed on the layer composed of the ultraviolet curable resin composition. Then, ultraviolet rays having a wavelength of 32 〇 to 39 〇 nm are irradiated so that the cumulative irradiation amount is 1000 mj/cm 2 to cure the ultraviolet curable resin composition. By peeling off from the mold, the ruthenium sheet 2 in which the cured layer of the ultraviolet curable resin composition having the prism-like protrusions is laminated on the (4) m ethane film is obtained. The refractive index of the prismatic protrusion of the cymbal sheet 2 is 1. Μ (Composition of the ultraviolet ray-cured lysate composition used in Production Example 4) FANCRYL FA-321M (Ethylene oxide produced by Hitachi Chemical Co., Ltd.) Modified bisphenol a methacrylate) Milk part by weight 32212] 30 201107837 % / M ESTER A-BPE-4 (Xingzhongcun Chemical Co., Ltd. Manufactured by Ethylene Ethylene Ether. Bisphenol A Diacrylate) 25 parts by weight

Sartomer 285 (Sartomer公司製造丙稀酸四氫咬喃甲酉旨） 30重量份Sartomer 285 (Sartomer's manufacture of tetrahydromanganate) 30 parts by weight

Darocur-1173 (Ciba公司製造 2-經基-2-甲基-1-笨基@ 炫&lt;-1-酮） 3重量份 〈實施例1&gt; (a)偏光板的製作 經由製造例2中獲得之紫外線硬化型接著劑，將製造 例3中獲得之稜鏡片1，以與其稜鏡面為相反之側的面作 為貼合面’予以貼合於製造例1中獲得之偏光膜之單側的 面。此外，經由製造例2中獲得之紫外線硬化型接著劑， 將三醋酸纖維素膜（80/zm，Konica Minolta Opto公司製 造）貼合於偏光膜的另一面。然後，在日本電池（股）製造之 紫外線照射裝置（紫外線燈係以80W使用“HAL400NL”，昭 射距離為50 cm)中，使其以線速度1· 〇 m/分鐘通過1次， 以獲得具有良好外觀的偏光板。屬於環氧樹脂組成物之紫 外線硬化型接著劑的硬化性良好。此外，以jIS K 5400中 s己載的棋盤格法#平估稜鏡片1的密著性時，未剝離之棋盤 格數相對於所形成的棋盤格數為100/100，顯示良好的密 著性。在該偏光板的三醋酸纖維素膜之外表面敷設厚度 25 # m的丙烯酸系黏著劑層。 (b)液晶顯示裝置的製作 經由丙烯酸系黏著劑層將上述偏光板配置於液晶單元「 31 322121 201107837 的背面，並將市售的偏光板配置於液晶單元的前面，以組 裝液晶面板。將該液晶面板與導光板方式（側邊型光源）的 面光源A (在Sony公司製造的VAIO VGN-FE32B/W中所使 用者）予以組合，以製作液晶顯示裝置。目視觀察液晶顯示 裝置的顯示時，從正面觀看可獲得明亮的影像，辨識度 (visibility)良好。使用 EZContrast (ELDIM 製造 LX88W) 測定之面光源A的光強度分佈係顯示於第6圖。 〈實施例2&gt; 除了使用製造例4中獲得之稜鏡片2代替製造例3中 獲得之稜鏡片1以外，以與實施例1相同的方式製作偏光 板，繼而製作液晶顯示裝置。目視觀察液晶顯示裝置的顯 示時，從正面觀看可獲得明亮的影像，辨識度良好。 〈比較例1&gt; 除了使用導光板方式（側邊型光源）的面光源B (在 Nanao公司製造的FlexScan EV2411W-H中所使用者）代替 面光源A以外，以與實施例1相同的方式製作液晶顯示裝 置。目視觀察液晶顯示裝置的顯示時，從正面觀看之影像 暗，對比度低，辨識度不良。使用EZContrast (ELDIM製 造LX88W)測定之面光源B的光強度分佈係顯示於第7圖。 〈比較例2&gt; 除了使用製造例4中獲得之稜鏡片2代替製造例3中 獲得之稜鏡片1以外，以與比較例1相同的方式製作液晶 顯示裝置。目視觀察液晶顯示裝置的顯示時，從正面觀看 之影像暗，對比度低，辨識度不良。 32 322121 201107837 從用於上述實施例及比較例之面光源的光強度分佈所 求得的0 a、6» b及丨Θ a- 6» b丨的值，以及所製作的液晶 顯示農置之辨識度評估結果係總結於表1。液晶顯示裝置 的焭度及對比度係使用EZContrast (ELDIM製造LX88W) 在暗至中從正面測定液晶顯示裝置的中央部而測定。實施 例1及比較例1中製作的液晶顯示裝置之光強度分佈（亮度 刀佈）係顯不於第8圖及第9圖。再者，表1的r 0b」攔 中之一」係意味在光強度的極大值為最高之波峰中，在 80 S 0 $80的範圍内不存在屬於極大值的點。 「类 1 1 * 液晶顯示裝置 目視評估 亮度 對比度 良好 389 896 良好 350 749 不良 92 650 良 83 573Darocur-1173 (manufactured by Ciba Corporation, 2-carbo-2-methyl-1-phenyl@Hyun&lt;-1-one) 3 parts by weight <Example 1> (a) Production of polarizing plate by Production Example 2 In the obtained ultraviolet curable adhesive, the batt sheet 1 obtained in Production Example 3 was bonded to one side of the polarizing film obtained in Production Example 1 by using the surface opposite to the kneading surface as a bonding surface. surface. Further, a cellulose triacetate film (80/zm, manufactured by Konica Minolta Opto Co., Ltd.) was bonded to the other surface of the polarizing film via the ultraviolet curable adhesive obtained in Production Example 2. Then, in an ultraviolet ray irradiation apparatus (UV light system using "HAL400NL" at 80 W and a direct emission distance of 50 cm) manufactured by a Japanese battery (unit), it was passed once at a linear velocity of 1·〇m/min to obtain A polarizing plate with a good appearance. The ultraviolet curable adhesive which is an epoxy resin composition has good curability. In addition, when the adhesion of the cymbal 1 is estimated by the checkerboard method of the s-loaded in the jIS K 5400, the number of undivided checkerboards is 100/100 with respect to the formed number of checkers, showing good adhesion. Sex. An acrylic adhesive layer having a thickness of 25 #m was applied to the surface of the triacetate film of the polarizing plate. (b) Production of Liquid Crystal Display Device The polarizing plate was placed on the back surface of the liquid crystal cell "31 322121 201107837 via an acrylic adhesive layer, and a commercially available polarizing plate was placed on the front surface of the liquid crystal cell to assemble the liquid crystal panel. A liquid crystal panel and a surface light source A (a user of VAIO VGN-FE32B/W manufactured by Sony Corporation) of a light guide plate type (side type light source) are combined to fabricate a liquid crystal display device. When the display of the liquid crystal display device is visually observed A bright image was obtained from the front, and the visibility was good. The light intensity distribution of the surface light source A measured using EZ Contrast (ELDIM manufactured LX88W) is shown in Fig. 6. <Example 2> Except for the use of Production Example 4 In the same manner as in the first embodiment, a polarizing plate was produced in the same manner as in the first embodiment, and a liquid crystal display device was produced. The display of the liquid crystal display device was visually observed and viewed from the front. Bright image, good recognition. <Comparative Example 1> In addition to the use of the light guide plate method (side type light source), the surface light source B (in Nana) o The user of the FlexScan EV2411W-H manufactured by the company, in place of the surface light source A, produced a liquid crystal display device in the same manner as in Example 1. When the display of the liquid crystal display device was visually observed, the image viewed from the front was dark, and the contrast was low. The light intensity distribution of the surface light source B measured using EZ Contrast (manufactured by ELDIM LX88W) is shown in Fig. 7. <Comparative Example 2> A sheet 2 obtained in Production Example 4 was used instead of Production Example 3. A liquid crystal display device was produced in the same manner as in Comparative Example 1. When the display of the liquid crystal display device was visually observed, the image viewed from the front was dark, the contrast was low, and the visibility was poor. 32 322121 201107837 From the above implementation The values of 0 a, 6» b and 丨Θ a- 6» b丨 obtained by the light intensity distribution of the surface light source of the examples and the comparative examples, and the identification results of the liquid crystal display produced by the liquid crystal display are summarized in the table. 1. Measurement and contrast of a liquid crystal display device were measured using EZ Contrast (LX88W manufactured by ELDIM), and the center portion of the liquid crystal display device was measured from the front side in the dark. The light intensity distribution (brightness cloth) of the liquid crystal display device produced in Comparative Example 1 is not shown in Figs. 8 and 9. In addition, one of the r 0b" blocks in Table 1 means light intensity. In the peak with the highest maximum value, there is no point belonging to the maximum value in the range of 80 S 0 $80. "Class 1 1 * Liquid crystal display device Visual evaluation Brightness Contrast Good 389 896 Good 350 749 Bad 92 650 Good 83 573

示而揭示的實施形態及實施例在各方面皆為 申請專利範圍所界的說明’而係 的咅義㈣料利範圍均 町％、我以及靶圍内的所有變更。 【圖式簡單說明】 第1圖係顯示本發明之液晶 略剖視圖。 ’、’、裝置的一較佳例之才 第2圖係顯示用於本發明 面側偏光板的一較佳作 322121 33 201107837 之概略剖視圖。 第3圖係顯示稜鏡片的表面形狀之一例的概略斜視 圖。 第4圖係為了說明用於本發明之面光源的光射出特性 之示意性斜視圖。 第5圖係為了說明入射至稜鏡片所具有的稜鏡狀突起 的光之路徑的示意圖。 第6圖係顯示用於實施例1及2之面光源A的光強度 分佈之圖。 第7圖係顯示用於比較例1及2之面光源B的光強度 分佈之圖。 第8圖係顯示實施例1中製作的液晶顯示裝置之光強 度分佈（亮度分佈）之圖。 第9圖係顯示比較例1中製作的液晶顯示裝置之光強 度分佈（亮度分佈）之圖。 【主要元件符號說明】 1 ' ^ 丨偏光板 3 液日日早 10 液晶面板 12 偏光膜 13 稜鏡片 13a 棱鏡狀突起 14、 Μ接著劑層 15 樹脂膜 17 黏著劑層 20 面光源 21 光源裝置 22 導光板 100 液晶顯示裝置 W 與稜鏡狀突起之棱線方向垂直的平面 322121 34 201107837 τ 面光源的光射出面之法線方向 Μ 面光源的射出光之射出方向 Θ 由面光源的光射出面之法線方向與面光源的射出光 之射出方向所成之角度（射出角度） Ρ 稜鏡狀突起的斜邊 a 稜鏡狀突起的頂角 35 322121The embodiments and examples disclosed herein are in all respects of the scope of the claims and the scope of the claims is limited to all the changes in the scope of the product, the number of the products, and the target area. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing a liquid crystal of the present invention. A preferred embodiment of the device, Fig. 2 is a schematic cross-sectional view showing a preferred embodiment of the face-side polarizing plate of the present invention 322121 33 201107837. Fig. 3 is a schematic perspective view showing an example of the surface shape of the cymbal sheet. Fig. 4 is a schematic perspective view for explaining light emission characteristics of the surface light source used in the present invention. Fig. 5 is a schematic view for explaining the path of light incident on the ridges of the cymbal. Fig. 6 is a view showing the light intensity distributions of the surface light sources A used in the first and second embodiments. Fig. 7 is a view showing the light intensity distributions of the surface light sources B used in Comparative Examples 1 and 2. Fig. 8 is a view showing the light intensity distribution (brightness distribution) of the liquid crystal display device produced in Example 1. Fig. 9 is a view showing the light intensity distribution (brightness distribution) of the liquid crystal display device produced in Comparative Example 1. [Description of main component symbols] 1 ' ^ 丨 Polarizing plate 3 Liquid day and day 10 Liquid crystal panel 12 Polarizing film 13 稜鏡 13a Prism-like protrusion 14, Μ adhesive layer 15 Resin film 17 Adhesive layer 20 Surface light source 21 Light source device 22 Light guide plate 100 The liquid crystal display device W is perpendicular to the ridge line direction of the ridges 322121 34 201107837 τ The normal direction of the light exit surface of the surface light source 射 The exit direction of the light emitted from the surface light source Θ The light exit surface of the surface light source The angle between the normal direction and the direction in which the surface light source emits light (ejecting angle) 斜 the oblique side of the dome-shaped protrusion a apex angle of the dome-shaped protrusion 35 322121

Claims (1)

201107837 七、申請專利範圍： 1. 一種液晶顯示裝置’其係由下列者所構成： 面光源；以及 配置於前述面光源上且具備液晶單元及積層於前 述液晶單元的面光源側的面之偏光板的液晶面板； 其中，前述偏光板係具備：偏光膜、以及經由接著 劑層積層於則述偏光膜的表面之稜鏡片，該稜鏡片具有 由稜鏡狀突起所構成的表面； 刖述稜鏡片係配置成使得由前述稜鏡狀突起所構 成的表面相對向於前述面光源； 在與則述稜鏡狀突起的稜線方向垂直之平面内，當 將由前述面光源的光射出面之法線方向與前述面光源 的射出光之射出方向所成之角度作為射出角度6&gt;(惟 90 $&lt;9$90°)時，顯示前述射出光的光強度之射出角 度依存性的前述面光源之光強度分佈係滿足下述（1)及 (2)： (1) 在80 $ 0 &lt; _4〇。或4〇。&lt; 0 gg〇。的範圍内，具有 光強度的極大值為最高之波峰； (2) 當將顯不出前述波峰中之光強度極大值之角度作為 ’並將顯示出前述波峰中之光強度極大值的1/2之 角度作為6b時，係滿足下式: I 丨 &lt;3(Γ ⑴。 2.如申:專利範園第1項所述之液晶顯示裝置，其中，前 ϋ面光源係由導光板、以及配置於前述導光板侧方的光 36 322121 V 201107837 源裝置所構成。 3. 如申請專利範圍第2項所述之液晶顯示裝置，其中，前 述光源裝置係為將點狀光源予以線性排列而成的光源 ‘ 裝置或由棒狀光源所構成的光源裝置， 前述光源裝置與前述稜鏡片係配置成使前述光源 裝置與前述稜鏡狀突起之稜線平行或約略平行。 4. 如申請專利範圍第1至3項中任一項所述之液晶顯示裝 置，其中，前述光源裝置係配置於前述導光板的一邊或 相對向的兩邊。 5. 如申請專利範圍第1至4項中任一項所述之液晶顯示裝 置，其中，前述稜鏡狀突起的頂角α為60°以上。 37 322121201107837 VII. Patent application scope: 1. A liquid crystal display device comprising: a surface light source; and a polarizing light disposed on the surface light source and having a liquid crystal cell and a surface laminated on a surface light source side of the liquid crystal cell The liquid crystal panel of the board; wherein the polarizing plate comprises: a polarizing film; and a lining layer laminated on the surface of the polarizing film via an adhesive, the cymbal having a surface formed by a ridge-like protrusion; The lens system is disposed such that a surface formed by the above-mentioned dome-shaped protrusions faces the surface light source; in a plane perpendicular to a ridgeline direction of the ridge-like protrusion, a normal line of the light exiting surface of the surface light source When the angle between the direction and the direction in which the surface light source emits light is taken as the emission angle 6 &gt; (only 90 $ &lt; 9 $ 90°), the light of the surface light source indicating the dependence of the light intensity of the emitted light is incident. The intensity distribution satisfies the following (1) and (2): (1) at 80 $ 0 &lt; _4〇. Or 4〇. &lt; 0 gg〇. Within the range, the maximum value of the light intensity is the highest peak; (2) When the angle of the maximum value of the light intensity in the aforementioned peak is not taken as ', and 1/ of the maximum intensity of the light intensity in the aforementioned peak is displayed When the angle of 2 is 6b, it satisfies the following formula: I 丨 &lt;3 (Γ (1). 2. The liquid crystal display device according to claim 1, wherein the front side light source is a light guide plate, And a liquid crystal display device according to the second aspect of the invention, wherein the light source device linearly aligns the point light sources. a light source device or a light source device comprising a rod-shaped light source, wherein the light source device and the cymbal system are arranged such that the light source device is parallel or approximately parallel to a ridgeline of the ridge-like protrusion. The liquid crystal display device according to any one of the items 1 to 3, wherein the light source device is disposed on one side or opposite sides of the light guide plate. 5. As in any one of claims 1 to 4 Of the liquid crystal display device, wherein the apex angle α more Prism-shaped projections 60 °. 37 322121
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WO2016175580A1 (en) * 2015-04-29 2016-11-03 삼성에스디아이 주식회사 Optical film for improving contrast ratio, polarizing plate including same, and liquid crystal display device including same
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