TW200815794A

TW200815794A - Lens sheet, planar light source device and liquid crystal display device

Info

Publication number: TW200815794A
Application number: TW096133810A
Authority: TW
Inventors: Yoshiaki Murayama; Tomoyoshi Yamashita; Osamu Numata; Yoshiyuki Okamoto
Original assignee: Mitsubishi Rayon Co
Priority date: 2006-09-11
Filing date: 2007-09-11
Publication date: 2008-04-01
Also published as: CN101512393A; CN101512393B; KR20090057428A; WO2008032692A1; TWI354122B; JP5236291B2; JPWO2008032692A1; KR101280187B1

Abstract

A lens sheet, a planar light source device, and a liquid crystal display device are provided. A prism sheet is disposed on a light-emergent surface (33) of a light guide (4), wherein a light diffusion layer (45) is deployed on one surface of the light guide (4) at an optical transmission substrate (43) side, and a formative layer of optical transmission prism rows (44) is deployed on the other surface. A rough surface is formed upon the light diffusion layer (45) by having a light diffusion material (452) protrude from a surface of an optical transmission resin (451). Mean spacing of local peaks of the profile S of the rough surface is smaller than or equal to 50 μm, and ten-point mean roughness Rz is smaller than or equal to 4 μm. Haze H of the light diffusion layer (45) is 50 to 85%. The number of secondary particle (453) having a major axis greater than or equal to 30 μm formed by aggregating plural light diffusion material (452) in the optical transmission resin (451) is less than or equal to 3 in any position of the light diffusion layer (45) within a radius of 70 μm. The difference between refractive index N1 of the optical transmission resin and refractive index N2 of the light diffusion material is 0.03 to 0.10.

Description

200815794 25645pif 九、發明說明：【發明所屬之技術領域】㈣―種Μ顯示裝置、用作觀晶顯示f =光模組的面崎置及構成該面光源裝置的= 圖復海發：尤其是關於1目的在於減少液晶顯示骏置： =目現㈣透鏡片、q職置及液晶顯轉置。叫）200815794 25645pif IX. Description of the invention: [Technical field to which the invention pertains] (4) "Group display device, used for viewing crystal display f = surface of the optical module and the device constituting the surface light source = Fig. Fuhaifa: especially About the purpose of 1 is to reduce the liquid crystal display:: the current (four) lens, q position and liquid crystal display transpose. call)

【先前技術】近年來’衫色液晶顯示裝置作為行動用個人上型個人電關監視器，行動用電視或視訊― ^ 的圖像顯示機構而歧_在各種領域。該液晶顯Γίί f吏用的液晶顯示元件（液晶面板）其自身並不發光f 疋务揮快門_( shutter)的作用。由此，為提高液晶罐示壯 ^的圖像顯示性能，—般是在液晶面板的背後配置被= 为光拉—光轉置，彻自該面光源裝置 : 從背面照亮液晶面板。光木例如日本專利特開平2 —84618號公報（專利文及曰本專利實開平3_69184號公報（專利文獻所揭示般，如此之背光模組是由作為一次光源的螢光管、導光體、反射片及作為偏光元件的稜鏡片等所構成的。其中片配置於導，體的光出射面上，用以改善f光模乡且的= 效率從而提高亮度，例如是於透光片的—個表面上以兄 μπι的間距並列配置有頂角為6〇。〜1〇〇。的剖面為等腰三角形狀的稜鏡列而構成的透鏡片。一 6 200815794 25645pif[Prior Art] In recent years, the 'shirt color liquid crystal display device has been used as a personal personal-type personal-controlled monitor for mobile use, and an image display mechanism for mobile television or video-^ is in various fields. The liquid crystal display element (liquid crystal panel) of the liquid crystal display itself does not emit light and functions as a shutter. Therefore, in order to improve the image display performance of the liquid crystal cell, it is generally arranged on the back of the liquid crystal panel to be light-light-transformed, and the light source device is completely illuminated from the back surface. For example, the backlight module is a fluorescent tube, a light guide body as a primary light source, and the like. As disclosed in the patent document, the backlight module is disclosed in Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. The reflection sheet and the ruthenium sheet as a polarizing element, etc., wherein the sheet is disposed on the light exit surface of the body to improve the efficiency of the f-mode and thereby improve the brightness, for example, in the light-transmissive sheet- On the surface, a lens sheet having a vertex angle of 6 〇. 〇〇〇〇〇〇为为等等等等等等等 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008

如曰本專利特開平6 — 324205號公報（專利文獻3 )、曰本專利特開平1〇一 160914號公報（專利文獻4)及曰本專利特開2000 — 353413號公報（專利文獻5)所揭示般，提出了：作為稜鏡片應具有光擴散片或光擴散薄膜的功月匕，並且在形成有稜鏡列的相反侧的面上形成具有光擴散功能的表面構造。於專利文獻3的稜鏡片中，藉由形成具有光擴散功能、高度大於等於光源光的波長且小於等於 100 μιη的突起群，來提高面光源裝置的亮度且減少亮度不均於專利文獻4的稜鏡片中，藉由形成塗佈類型、浮雕類型或噴砂難的光狐層，來提高面光源裝置的亮度且擴大視角。於糊讀5的稜鏡#巾，藉由塗佈透明珠粒等光擴散性微粒子層，來提高亮度及擴大視角。 [專利文獻1]曰本專利特開平2一84618號公報 [專利文獻2]日本專利實開平3一69184號公報 [專利文獻3]日本專利特開平6 — 32·5號公報 [專利文獻4]日本專利特開平1Ό— _14號公 [專利文獻5]日本專利特開2_ —%期號公於如上具有稜鏡片的光擴散魏顺面構迭的功能，可列舉如下：双泡構k t产〔η 使*擴散’使光表現φ所铜-的務度Haze)，糟此來調整為所期望的亮度及視肖 ⑵抑制被稱為影像殘留（sticking)的現卖’ 4 制由於與位於稜鏡片上表面（稜象，即抑的光擴散片或液日曰面姑沾a i ^ 目反侧的面) 面板的局部性密料產生干涉條紋 7 200815794 25645pif (interference fringes ); (3 )所謂的缺陷隱蔽，即降低稜鏡列的表面構造缺陷的可視性，或鱗低軸於導紐的光出射面雜相反側的背面的交織（mat)構造或透鏡列排職造等Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. As disclosed, it has been proposed that a ruthenium sheet should have a light diffusion sheet or a light diffusion film, and a surface structure having a light diffusion function is formed on the surface on the opposite side to which the matrix is formed. In the cymbal of the patent document 3, by forming a protrusion group having a light diffusion function and having a height equal to or higher than the wavelength of the light source light and 100 μm or less, the brightness of the surface light source device is improved and the luminance unevenness is reduced. In the ruthenium, the brightness of the surface light source device is increased and the viewing angle is enlarged by forming a coating type, an embossing type, or a light fox layer which is difficult to sandblast. In the 巾# towel of the paste 5, the light diffusing fine particle layer such as transparent beads is applied to increase the brightness and enlarge the viewing angle. [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. Japanese Patent Laid-Open No. 1 - No. _14 [Patent Document 5] Japanese Patent Laid-Open No. 2_-% No. is publicized as a function of the above-described light-diffusing Weishun surface having a sepal, and can be exemplified as follows: η causes *diffusion 'to make the light express φ copper-duty Haze', and then adjusts to the desired brightness and view (2) suppresses what is called the image sticking. The upper surface of the lens (edge, ie, the light-diffusing sheet or the surface of the liquid sputum, the surface of the opposite side of the eye), the local dense material of the panel produces interference fringes 7 200815794 25645pif (interference fringes ); (3) the so-called defect Concealed, that is, reduces the visibility of the surface structure defects of the array, or the mating structure of the back side of the opposite side of the light exit surface of the guide, or the lens row, etc.

陷的可視性。 I 上述缺陷隱蔽，在使用高亮度的光源作為一次顯得尤為重要。 'The visibility of the trap. I The above-mentioned defects are concealed, and it is particularly important to use a high-brightness light source as one. '

、然而，若在稜鏡片的稜鏡列形成面的相反側的面上形成具有光擴散魏的表轉造，則自導紐射峻由棱鏡片的稜鏡舰行内面反射的指向性㈣強的光會受到具有光擴散功能的表面構造的干涉，從而有時會產生塗膜内部的微粒子或產生表_凹凸非f眩目的、且鶴為斑贼閃爍的眩目現象。此時，顯示的圖像會變得非常不清楚，因此，近年來迫切地需要解決此眩目現象。於上述專=文 5中，並未提及消除或減少如此之眩目現象的技術課題0 另一方面，於液晶顯示裝置中，自觀察側觀察時，在位於最前部的液晶面板中，為了抑制因螢光燈等外部光源的射入而導致顯不圖像品質下降等，有時亦於液晶面板的觀察側的面上形成與上述相同的具有光擴散功能的表面構造。而且，於液晶面板的光入射側的面上，為了抑制上述影像殘留現象’有時也形成與上述相同的具有光擴散功能的表面構造。基於與稜鏡#上所形成的具有光擴散功能的表面構造的情況相_理由’上述表面背面均具有光擴散 8 200815794 25645pif 表面構造有時也會產生眩目現象像會，常不清楚，因此迫切需要解決此工的圖 =抑_如上所述之具有光擴散舰 ^However, if a surface-transformation having a light diffusion Wei is formed on the surface on the opposite side of the formation surface of the cymbal sheet, the directivity of the self-guided ray is reflected by the inner surface of the prism sheet of the prism sheet (four) The light is interfered by the surface structure having a light-diffusing function, and sometimes a granule inside the coating film or a glare that causes the surface to be stunned and the crane to flicker is generated. At this time, the displayed image becomes very unclear, and therefore, in recent years, there has been an urgent need to solve this glare phenomenon. In the above-mentioned document 5, there is no mention of a technical problem of eliminating or reducing such a glare phenomenon. On the other hand, in the liquid crystal display device, when viewed from the observation side, in the liquid crystal panel located at the forefront, It is possible to suppress the deterioration of the image quality due to the entrance of an external light source such as a fluorescent lamp, and the same surface structure having the light diffusion function as described above may be formed on the surface on the observation side of the liquid crystal panel. Further, in order to suppress the image sticking phenomenon on the surface on the light incident side of the liquid crystal panel, the same surface structure having a light diffusing function as described above may be formed. Based on the surface structure with light diffusion function formed on 稜鏡#, the reason is that the surface of the surface has light diffusion 8 200815794 25645pif The surface structure sometimes causes glare, which is often unclear. There is an urgent need to solve the map of this work = _ _ as described above with a light diffusion ship ^

If的眩目現象，考慮到藉由增加形成表面構造微粒子的添加量來提高光擴散性。藉此，可中至」„度的減少’但存在面光源裝置或液晶•卞4:: 免度會大鱗低_點。〜貞不裝置的口此本赉明的目的在於降低液晶顯示裝，不會導致面她置或液晶顯示裝置的亮度】：【發明内容】根據本發明，為解決上述課於具有第〗面及第2面二=二: 处罘1面上亚列形成有多個透鏡列，上 S凸面的局料奸均間隔S為小於等於5G _凹且凸十面辱千均粗度Rz為小於等於4 _。十點 =本發_—實施縣巾，上述心透紐構基材的—個面上設置光擴散層而構成 :層=由使透光性樹脂中含有透光性光擴散材料而t、 u凹凸面是藉由使上述光擴散材料自上述透光性樹 ^散二:^5°〇__的—實施形態中，上述光上、十I Hz4 85%。於本發明的一實施形離中，材料的重量平均粒子徑D1為1〜8 μιη:於本 χ月的―貫施形態中’於上述光擴散層的任意位置的半ί 9 200815794 25645pif 释勒，上述透光賴财由多個上述光數L、而成的長徑大於等於3，的二次粒子的個性樹脂的個。於本發明的—實施形態中，上述透光〇Ω. 才率1^1與上述光擴散材料的折射率Ν2之差為 υ·ιυ〜υ·ι〇〇The glare phenomenon of If, it is considered to increase the light diffusibility by increasing the amount of addition of surface-forming fine particles. Therefore, it is possible to reduce the degree of "the degree" but there is a surface light source device or a liquid crystal device. 卞4:: The degree of relief will be large and low. _ Point. The purpose of this device is to reduce the liquid crystal display device. According to the present invention, in order to solve the above-mentioned lesson, there are many sub-columns formed on the first surface and the second surface two=two: For each lens column, the S-convex surface of the S-convex is equal to or less than 5G _ concave and convex and ten-dimensionally rough Rz is less than or equal to 4 _. Ten points = this hair _ - implementation of the county towel, the above-mentioned heart The light-diffusing layer is provided on one surface of the base material: layer = the light-transmitting resin contains a light-transmitting light-diffusing material, and the t, u-concave surface is made by transmitting the light-diffusing material from the light-transmitting material Sexual tree ^ 2: ^ 5 ° 〇 _ - In the embodiment, the above light, ten I Hz 4 85%. In one embodiment of the invention, the weight average particle diameter D1 of the material is 1~8 μm : In the "Shen Shi" form of this month, at any position of the above-mentioned light diffusion layer, half of the light, 200815794 25645pif, the above light transmission In the embodiment of the present invention, the light transmission 〇Ω. The rate of 1^1 is the same as the number of the plurality of light particles L, which are formed by the plurality of light numbers L. The difference in refractive index Ν2 of the above light diffusing material is υ·ιυ~υ·ι〇〇

’根據本發明，為了解決上述課題，提供一種面二Τ、’其包括：-次光源、導光體以及上述透鏡片。次光源發出的光導人導光體後，導光體對該光 =丁引¥ ’使該光射出。透鏡片是以使來自上述導光體的 j光射从上的方式穩置。上述導紐具備使自上述，原每出的光射人的光人射端面、及使經引導的光射出的光出射面，上述一次光源鄰接配置於上述導光體的光入射多而面’上述透鏡片是以使上述第1面對向於上述導光體的光出射面的方式而配置。曰而且，根據本發明，為了解決上述課題，提供一種液晶顯示裝置，其包括：上述面光源裝置以及液晶面板。該液晶面板是以使自上述面光源裝置的上述透鏡片的第2面射出的光射入其上的方式而配置，且該液晶面板具備自上述透鏡片的第2面射出的光射人的人射面、及其相反側的觀察面。於本發明的一實施形態中，上述觀察面設為防眩面， 6〇度光澤值G1為大於專於25。於本發明的一實施形態中，上述觀察面設為眩光面，60度光澤值G1為大於等於 90。於本發明的一實施形態中，上述入射面設為防眩面， 10 200815794 25645pif 上述觀察面的60度光澤值G1與上述入射面的6〇度光澤值G2的比率G1/G2為大於等於i。於本發明的一實施形悲中，上述觀察面的十點平均粗度^^為小於等於2 丑於本發明的一實施形態中，上述液晶顯示裝置包括光擴散片，該光擴散片是以使自上述透鏡片的第2面射出的光射入其上的方式而配置在上述透鏡片與上述液晶面板之間’該光擴散片的至少―個面為凹凸形狀面，該凹凸形狀面的局峰頂平均間隔S為小於等於5〇哗且十點平均粗度Rz為小於等於4 μιη。於本發明的一實施形態中，上述光擴散片是藉由在透光性基材的一個面上設置光擴散功能層而構成’該光擴散功能層是藉由使透光性細旨中含有透 ^性光擴散㈣而形成，上相凸面是藉由使上述光擴散每=自ΐ述透光性樹脂的表面突出而形成。於本發明的一形您中，上述光擴散功能層的霧度Hz為20〜70%。 2發明的—實施職中，上述凹凸形狀面的光擴散材料的重量平均粒子徑仞為1〜8障。根據如上所述的本發明，由於將透鏡片的凹凸面的平均間隔S及十點平均粗度Rz兩者㈣限定在規 ’因此不會導致面光源裝置或液㈣示裝置的 j大幅降低’可減少液晶顯示裝置中的眩目現象。【實施方式】以下參知、圖式說明本發明的實施形態。圖1疋表示作為本發明的透鏡片的一實施形態的稜鏡、使用該稜鏡㈣本發_面光源裝置的-實施形態、 11 200815794 25645pif 示意® 3 I晶顯示裝置的—實施形態的斜视射端面Μ ν九體3，其至少一個側端面設為光入面33 .與此側端面大致正㈣—個表㈣為光出射面31相=的-次光源1，其與上料級3的光入射端片4，里配置且由光源反射器_ec㈣2所覆蓋；稜鏡According to the present invention, in order to solve the above problems, a surface defect is provided, which includes: a secondary light source, a light guide, and the above lens sheet. After the light emitted by the secondary light source guides the light guide, the light guide emits the light to the light. The lens sheet is stabilized such that the light from the light guide is emitted upward. The guide button includes a light-emitting end face that emits light from the original light source and a light-emitting surface that emits the guided light, and the primary light source is incident on the light guide body in a plurality of directions. The lens sheet is disposed such that the first surface faces the light emitting surface of the light guide. Further, according to the present invention, in order to solve the above problems, a liquid crystal display device including the above-described surface light source device and a liquid crystal panel is provided. The liquid crystal panel is disposed such that light emitted from a second surface of the lens sheet of the surface light source device is incident thereon, and the liquid crystal panel includes light emitted from a second surface of the lens sheet. The human face, and the observation surface on the opposite side. In one embodiment of the present invention, the observation surface is an anti-glare surface, and the 6-degree gloss value G1 is greater than 25 degrees. In one embodiment of the present invention, the observation surface is a glare surface, and the 60-degree gloss value G1 is 90 or more. In one embodiment of the present invention, the incident surface is an anti-glare surface, and the ratio G1/G2 of the 60-degree gloss value G1 of the observation surface to the 6-degree gloss value G2 of the incident surface is greater than or equal to i. . In an embodiment of the present invention, the ten-point average roughness of the observation surface is less than or equal to two. In an embodiment of the present invention, the liquid crystal display device includes a light diffusion sheet, and the light diffusion sheet is At least one surface of the light diffusion sheet is disposed between the lens sheet and the liquid crystal panel such that light emitted from the second surface of the lens sheet is incident thereon, and the surface of the light diffusion sheet is an uneven surface. The average peak interval S of the local peak is less than or equal to 5 〇哗 and the ten-point average roughness Rz is equal to or less than 4 μηη. In one embodiment of the present invention, the light diffusion sheet is formed by providing a light diffusion functional layer on one surface of the light-transmitting substrate. The light diffusion function layer is included in the light transmittance. The transparent light is diffused (4), and the upper phase convex surface is formed by causing the light diffusion to protrude from the surface of the light transmissive resin. In the invention of the present invention, the haze Hz of the light diffusing functional layer is 20 to 70%. In the invention, the weight average particle diameter 光 of the light-diffusing material on the uneven surface is 1 to 8 barrier. According to the present invention as described above, since both the average interval S of the uneven surface of the lens sheet and the ten-point average roughness Rz are limited to the rule ', the surface light source device or the liquid (four) display device is not greatly reduced. The glare phenomenon in the liquid crystal display device can be reduced. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1A shows a squint of an embodiment of a lens sheet according to the present invention, an embodiment using the 稜鏡(4) hair-emitting device, and an embodiment of 11 200815794 25645pif Illustrated® 3 I crystal display device. The end face Μ ν 9 body 3, at least one side end face thereof is set as the light entrance face 33. The side end face is substantially positive (four) - the table (four) is the light exit face 31 phase = the secondary light source 1, which is connected to the feed level 3 The light is incident on the end piece 4, disposed therein and covered by the light source reflector _ec(4)2;

以及置於導光體3的光出射面33上作為偏光元件；背面U 4、几件5，其與導光體3的光出射面33相反侧的 d—配置。而且，於本實施形態中，液晶顯示曰而^ r配置於面光源裝置的稜鏡片4的出光面42上的液日日面板（液晶顧示元件）8。 $體3與XY面平行配置，且整體呈矩形板狀。導中Μ 1'有4 _端面’其中與ΥΖ面平行的—對側端面盥一 4二一個側端面設為光入射端面31。光入射端面31 、人先源1相對向祕置，自_次光源工發出的光入射先入射端面31後，導入至導光體3内。於本發明中，例亦可使光源與光入射端面31相反侧的側端面32等其他侧端面相對向而配置。 /導光體3的與光人射端面31大致正交的兩個主面分別具χγ面大致平行，其中任一個面（圖丨中是上表面）為光出射面33。藉由對該光出射面B賦予粗面或由透鏡列，成的指向性光出射機構，而將自光人射端面31入射的光&入至導光體3 ’且自光出射面33向與光人射端面31 及光出射面33正交的面（ΧΖ φ)***出具有指向性的光。 12 200815794 25645pif 將分佈於該xz面内的出射光光度分佈的波每方向光）與光出射面33所構成的角度設為α。角度α例如〜4〇度，出射光光度分佈的半肇全幅值(涵wi她 maximum，FWHM)例如為】0〜4〇度。形成於導光體3的表面的粗面或透鏡列中， =4=-刪的規定，平均傾斜“是設為〇 5〜;; 度的乾圍内，這樣’就實現光出射面33内的亮度均齊产方，而：較好:平均傾斜角％的範圍進而較好的是二2 根據導光们的厚度⑷ °5P ? L/d^ 左右^先體來作為導光體3時，較好的是將And on the light exit surface 33 of the light guide 3 as a polarizing element; the back surface U 4 and a plurality of pieces 5 arranged on the opposite side to the light exit surface 33 of the light guide 3 . Further, in the present embodiment, the liquid crystal display panel is disposed on the liquid-emitting surface panel (liquid crystal display element) 8 on the light-emitting surface 42 of the wafer 4 of the surface light source device. The body 3 is arranged in parallel with the XY plane, and has a rectangular plate shape as a whole. The guide Μ 1' has 4 _ end faces, which are parallel to the ΥΖ face, and the opposite end faces 盥二二一个 4 4 4 。。。。。。。。。。。。。。 The light incident end surface 31 and the human precursor 1 are relatively secret, and the light emitted from the secondary light source is incident on the end face 31, and then introduced into the light guide 3. In the present invention, the light source may be disposed such that the light source is opposed to the other side end surface 32 on the side opposite to the light incident end surface 31. The two principal faces of the light guide 3 which are substantially orthogonal to the light-emitting end face 31 are substantially parallel to the χγ plane, and any one of the faces (the upper face in the figure) is the light exit face 33. The light incident from the light human incident end face 31 is incident on the light guide body 3' and the light exit surface 33 by imparting a light surface or a directional light emitting means to the light exit surface B. Light having directivity is emitted into a surface (ΧΖ φ) orthogonal to the light-emitting surface 31 and the light-emitting surface 33. 12 200815794 25645pif The angle formed by the light in each direction of the light of the outgoing light luminosity distribution distributed in the xz plane and the light exit surface 33 is set to α. The angle α is, for example, ~4 〇, and the full amplitude of the exit luminosity distribution (FWHM) is, for example, 0 to 4 degrees. In the rough surface or the lens array formed on the surface of the light guide body 3, the definition of =4=-deletion, the average tilt "is set to 〇5~;; within the dry circumference of the degree, so that the light exit surface 33 is realized" The brightness is uniform, and: better: the range of the average tilt angle % is further preferably 2 2 according to the thickness of the light guides (4) °5P ? L / d ^ left and right ^ precursor as the light guide 3 , it is better to

St5〜^度’進而較好的是1〜5度的範圍…更好的疋1.5〜4度的範圍内 _炅 2〇左右的導光體來作為導光體3 /吏用L/d為小於等於 _為7，，進:更;=^^^ 形成於導光體3上圍内° IS04287/1-1984，使用觸斜★本：貝斜角Ga，可根據狀，將測定方向的座標設為Ί粗度計來測定粗面形 (X)，並使用下述式7;)及所獲得的傾斜函數f ΘΔ ~( rL)i〇 l(d/dx)f(x)!dx ......⑴ 0a=tan (Aa) .·····⑺。 ⑴ 此處，L是測定長度，Δ ° 進而，作為導光辦3 =々傾斜角％的正切。、車乂好的是其光出射率處於0.5 13 200815794 25645pif 〜5%的範圍内，更為大於等於0.5%，#此=:°的範圍内。將光出射率設獲得充分的亮度。光體3射㈣光量增多而 5〇/- 出射面33内X方向：附近有大量的光射出、可減小光面33上的亮产均〜的出射光的衰減、且可提高光出射設為體3的光出射率的光自導先體3= 所述之具有高指向性的出射特性光度分佈（χζ面内）’:在自光出射面射出的光的出射光的法線而處於5G〜8G ;^波圍峰内光，f目對於光出射面 φ ^ ^ U度的乾圍内，且在與光入射端面及光的车庵二給垂直的ΧΖ面内的出射光光度分佈（χζ面内）值為10〜AO度，並且可利用稜鏡片4使光的出、〇效地偏向，從而可提供具有高亮度的面光源裝置。於本發明中，來自導光體3的光的光出射率的定義如了所述。當將導光體3的厚度（Z方向尺寸）設為d時，光出射面33的光入射端面31侧的端緣上的出射光的光強度、Uo^)與距光入射端面31側的端緣距離L的位置上的出射光強度（I)的關係滿足下述式（3)的關係： Ι = 1〇 (α/1〇〇) [1_ (a/1〇〇) ]L/d ……⑶。此處，常數α為光出射率，是指光出射.面33的與光入射端面31正交的X方向上單位長度（相當於導光體厚度d 的長度）的光自導光體3射出的比例（百分率：％)。縱軸是來自光出射面23的出射光的光強度的對數，横軸是 (L/d) ’藉由繪製出上述關係，可根據其梯度來求出上述 14 200815794 25645pif 光出射率α。另外，於本發明中， _ 光擴散性微粒子而 t亦可藉由使導光體内部混入分散述般於光出射面33、予指向性光出射機構，以取代如上所用。上形成光出射機構，或者將此兩者併St5~^degree' is further preferably in the range of 1 to 5 degrees... better in the range of 1.5 to 4 degrees 炅炅 2 〇 around the light guide body as the light guide body 3 / 吏 L/d is Less than or equal to _ is 7,, enter: more; =^^^ is formed in the circumference of the light guide body ° IS04287/1-1984, using the slanting angle ★ this: the bevel angle Ga, according to the shape, the direction of measurement The coordinates are set to the thickness gauge to determine the rough shape (X), and the following equation 7;) and the obtained tilt function f ΘΔ ~( rL)i〇l(d/dx)f(x)!dx are used. (1) 0a=tan (Aa) .·····(7). (1) Here, L is the measured length, Δ ° and further, as the tangent of the light guide 3 = 々 tilt angle %. The good rut is that its light emission rate is in the range of 0.5 13 200815794 25645pif ~ 5%, more than 0.5%, # this =: ° range. Set the light emission rate to obtain sufficient brightness. Light body 3 (4) The amount of light increases and 5 〇 / - The X direction in the exit surface 33: A large amount of light is emitted in the vicinity, and the attenuation of the emitted light on the smooth surface 33 can be reduced, and the light exit can be improved. The light self-guide precursor 3 which is the light emission rate of the body 3 = the above-described emission characteristic luminosity distribution having high directivity (inside the plane)': at the normal of the light emitted from the light exiting surface 5G~8G ; ^ wave inner peak light, f mesh for the light exit surface φ ^ ^ U degree in the dry circumference, and the light luminosity distribution in the pupil plane perpendicular to the light incident end face and the light rut The value in the inside is 10 to AO degrees, and the cymbal 4 can be used to deflect the light and effectively, thereby providing a surface light source device having high brightness. In the present invention, the definition of the light emission rate of light from the light guide 3 is as described. When the thickness (Z dimension) of the light guide 3 is d, the light intensity of the light emitted from the edge on the side of the light incident end surface 31 of the light exit surface 33, Uo^) and the side from the light incident end surface 31 side The relationship of the intensity (I) of the emitted light at the position of the edge distance L satisfies the relationship of the following formula (3): Ι = 1 〇 (α / 1 〇〇) [1_ (a / 1 〇〇) ] L / d ... (3). Here, the constant α is the light emission rate, and means that light having a unit length (corresponding to the length of the thickness d of the light guide body) in the X direction orthogonal to the light incident end surface 31 of the light exit surface 33 is emitted from the light guide body 3. The proportion (percentage: %). The vertical axis is the logarithm of the light intensity of the outgoing light from the light exit surface 23, and the horizontal axis is (L/d)'. By plotting the above relationship, the above-mentioned 14 200815794 25645 pif light exit rate α can be obtained from the gradient. Further, in the present invention, the light diffusing fine particles and t may be mixed with the light emitting surface 33 and the directivity light emitting means in the light guide body instead of being used as described above. Forming a light exiting mechanism, or both

而言，為了控細職社面即背面34 行的面（YZ面）光脰3的出射光在—次光源4 向上，更具體而+ Η / ^向性，在光人射端面31的橫切有方向）上與光人射端面31大致垂直的方向（Χ 此導光體目魏顺魏卿成面。〜100 um ΜM F! &的稜鏡列的排列間距例如可設為10 而且，tl· ，較好的是設為3〇〜6〇μιη的範圍内。 85〜no 3的背面34的稜鏡列的頂角例如可設為 n內，d =圍内。其原因在於，藉由將頂角設在上述巳，"使來自導光體3的出射光適度地聚集，從而可 =面光源裝置的亮度，則更好的是在9G〜⑽度的範作為導光體3 ’並不限定於具有圖1所示的形狀，亦可使用光入射端面呈較厚的楔狀等各種形狀的導光體。導光體3可由透光率較高的合成樹脂構成。作為如此之合成樹脂可為曱基丙烯酸樹脂、丙烯酸樹脂、聚碳酸酯系樹脂、聚酯系樹脂、氯乙烯系樹脂。尤其是，具有優良透光率二耐熱性、力學特性、成形加工性的甲基丙烯酸樹脂最適當。此甲基丙烯酸樹脂，是以曱基丙烯酸甲酯為主 15 200815794 25645pif f刀:樹月曰’杈好的是具有大於等於8〇 — 在形成導光體3的粗面等表面構造、或In other words, in order to control the face of the fine-grained office, that is, the face of the back 34 lines (YZ face), the light of the exit pupil 3 is upward in the secondary light source 4, more specifically + Η / ^ directional, in the horizontal direction of the light-emitting end face 31 The direction in which the direction is substantially perpendicular to the light-emitting end face 31 (Χ 导导魏魏魏魏魏魏魏魏魏魏〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜 , tl· is preferably in the range of 3 〇 to 6 〇 μιη. The apex angle of the ridges of the back surface 34 of 85 to no 3 can be, for example, n and d = square. The reason is that By setting the apex angle to the above 巳, "the light emitted from the light guide 3 is moderately concentrated, so that the brightness of the surface light source device can be more preferably used as a light guide at a range of 9G to (10) degrees. 3' is not limited to the shape shown in Fig. 1. It is also possible to use a light guide body having various shapes such as a thick wedge shape on the light incident end face. The light guide body 3 can be made of a synthetic resin having a high light transmittance. Such a synthetic resin may be a mercapto acrylic resin, an acrylic resin, a polycarbonate resin, a polyester resin, or a vinyl chloride resin. A methacrylic resin having excellent light transmittance, two heat resistance, mechanical properties, and formability is most suitable. This methacrylic resin is mainly methyl methacrylate 15 200815794 25645pif f knife: Shu Yue 曰 '杈Preferably, it has a surface structure of 8 大于 or more - in the formation of the rough surface of the light guide 3, or

脰Γ(lenticular)透鏡列等表面構造時，可藉由 ^^所』望的表面構造的模構件來壓製透明合成樹脂 Ϊ:(成：亦可在藉由絲網印刷、壓出成形或射出成形等」1同賴予其形狀。而且’亦可錢減光硬化性樹月曰專來形成構造面。進而，可在由聚醋系樹脂、丙烯酸系樹脂、聚碳酸酉旨系樹脂、氯乙稀系樹脂、聚甲基丙_亞胺(polymethacrylimide)系樹脂等構成的透明薄膜或者透明薄片等透明基材的表面’形成由活性能量線硬化型樹脂構成的粗面構造或透制_構造，亦可藉由黏接、溶接等方法而使如狀㈣結構另行接合而—舰形成於透明基材上。活性能量線硬化型樹脂可使用多官能（甲基)丙烯化合物、乙烯化合物、（甲基)丙烯酸醋類、稀丙基化合物、（甲基)丙烯酸的金屬鹽等。稜鏡片4配置於導光體3的光出射面33上。稜鏡片4 由片狀透光性構件構成，作為其兩個主面的第丨面41及第 2面42整體上相互平行地排列，且整體上分別與χγ面平行。將作為其中-個主_第1面41(與導絲3的光出射面33相對向的面）設為入光面，而將另一個主面“設為出光面。入光面41被設為相互平行地排列有多個在γ 方向上延伸的稜鏡列的稜鏡列形成面。出光面42被設為凹凸面。圖3表示稜鏡片4及導光體3的局部放大剖面示意 16 200815794 25645pif U::片4疋由透光性基材43、作為透光性透鏡列形成 ===形成層44及光擴散層45 ===!!形成層44的下表面形成== 面形成出光=^w，纖層45的上表壬地f，性基材4 3的材料較好的是能使紫外線、電子線等，板專，但較好的是聚對苯二甲酸乙二醇酉 =二醇酯等聚醋系樹脂’聚甲基丙烯酸甲轉 Γ乙曰烯維素及三乙酿纖維素等纖維素系樹脂，聚稀共聚物等苯乙稀系樹脂，聚乙蝉、或具有降冰片稀構造的聚婦烴及乙埽·丙料 Π?:!ί樹脂，尼龍及芳香族聚_ ;科=醋系樹脂，氯乙烯系樹脂，聚甲基丙_亞胺 ^月:寻的透明樹月旨片或薄膜。考慮到強度及操作性等作業性方面，^性基材43的厚度較好岐例如1〇〜5〇〇 =πι ’，好的是20〜4〇〇 _，尤其好的是3〇〜遍拜。另二化樹脂構成的棱鏡列形成層二、'主i材43之間的密接性’較好的是對透光性基材43的表面實施有職塗層處理等提高密接性處理。稜鏡列形成層44的上—平坦面，結上述透光 ^基材43的下表面接合。稜鏡列形成層44的下表面即入先面41設為稜鏡列形成面，相互平行地排列有在飞方向 17 200815794 25645pif 上延伸的多個稜鏡列411。稜鏡列形成層44的厚度例如為 10〜500 μπι ,稜鏡列411的排列間距(pitch)P例如為1〇二 500 μπι °In the case of a surface structure such as a lenticular lens array, the transparent synthetic resin crucible can be pressed by a mold member having a surface structure of the desired shape: (forming: by screen printing, extrusion molding, or injection) "Forming, etc." is similar to the shape of the structure. Moreover, it is also possible to form a structural surface by using a light-reducing and hardening tree. The resin can be made of a polyester resin, an acrylic resin, a polycarbonate resin, or a chlorine. A transparent film formed of an ethylene resin, a polymethacrylimide resin, or a surface of a transparent substrate such as a transparent sheet forms a rough surface structure or a permeation structure composed of an active energy ray-curable resin. Alternatively, the structure of the shape (4) may be separately joined by a method such as bonding or melting, and the ship may be formed on a transparent substrate. The active energy ray-curable resin may be a polyfunctional (meth) propylene compound or a vinyl compound ( a methyl acrylate vinegar, a propyl propyl compound, a metal salt of (meth)acrylic acid, etc. The ruthenium sheet 4 is disposed on the light exit surface 33 of the light guide body 3. The ruthenium sheet 4 is composed of a sheet-like light transmissive member. As its two main faces The second surface 41 and the second surface 42 are arranged in parallel with each other as a whole, and are entirely parallel to the χγ plane as a whole, and will be the main surface of the first surface 41 (the surface opposite to the light exit surface 33 of the guide wire 3). The light-incident surface is set to be the light-emitting surface, and the light-incident surface 41 is arranged such that a plurality of matrix-arranged surfaces extending in the γ-direction are arranged in parallel with each other. The surface 42 is a concave-convex surface. Fig. 3 shows a partially enlarged cross-sectional view of the cymbal 4 and the light guide 3. 16 200815794 25645pif U:: Sheet 4 is formed of a light-transmitting substrate 43 as a translucent lens column == = formation layer 44 and light diffusion layer 45 ===!! The lower surface of the formation layer 44 is formed == the surface forms light = ^w, the upper surface of the fiber layer 45 is f, and the material of the substrate 4 3 is better. It is made of ultraviolet light, electronic wire, etc., but it is better, but polyethylene terephthalate 二醇 = glycol ester and other polyester resin 'polymethyl methacrylate Γ Γ 曰维维及 and three Cellulose resin such as cellulose, styrene resin such as polycondensation copolymer, polyethyl hydrazine, or polyglycol with icy thinner structure and acetonitrile? Fat, nylon and aromatic poly _; Branch = vinegar resin, vinyl chloride resin, polymethyl propyl imidate ^ month: looking for transparent tree moon film or film. Considering the workability such as strength and operability The thickness of the substrate 43 is preferably, for example, 1 〇 to 5 〇〇 = πι ', preferably 20 to 4 〇〇 _, particularly preferably 3 〇 to 10,000 Å. It is preferable to form the layer 2 and the "adhesiveness between the main members 43". The surface of the light-transmitting substrate 43 is preferably subjected to a coating treatment such as a coating treatment to improve the adhesion. The upper-flat surface of the matrix-forming layer 44 is formed. The lower surface of the light-transmitting substrate 43 is bonded to the lower surface of the substrate 44. The lower surface of the matrix-forming layer 44, that is, the front surface 41 is formed as a matrix-forming surface, and is arranged in parallel with each other in the flying direction 17 200815794 25645pif. A plurality of queues 411. The thickness of the matrix formation layer 44 is, for example, 10 to 500 μπι, and the pitch P of the array 411 is, for example, 1 〇 500 μπι °

棱鏡列411是由兩個稜鏡面41la、411b構成。上、;千匕、個稜鏡面可設為光學上完全平滑的面（鏡面），或者亦為粗面。於本發明中，考慮到須維持稜鏡片具有所期望= 光學特性，較好的是將稜鏡面設為鏡面。較好的是铲列411的頂角Θ設在40〜150。的範圍内。一般而言，晶顯示裝置的背光模組中，當以使稜_形成面面向液= 面板的方式來配置稜鏡片時，稜鏡列的頂角θ為8〇〜左右的範圍内，較好的是85〜95。的範圍内。另一方面，如上述實施形態所示’當岐€鏡列形成面面向導光雕’ 的方式來配置稜鏡片4時，稜鏡列411 _角θ為4〇二5。左右的範圍内，較好的是45〜70。的範圍内。域列形成層44例如由活性能量線硬倾脂慮到提咼面光源裝置的亮度等方面，較好層44具有較高的浙射率。具體而|，其折射率為大於等於更好的U於等於Μ °作為形成稜鏡列形成声 = 硬化翻旨，只要是能簡由料線、電^ 線寻活性輕、_魏的翻旨，黯朗蚊酉旨類、環氧系樹脂或聚(甲基)丙烯 :: 醋、胺基㈣)丙婦叫讀(二^ 編旨。其中，就光學特性等觀^言=(基甲）基)丙城醋系樹脂尤其好。作為如此之硬化樹脂中^吏用 18 200815794 25645pifThe prism row 411 is composed of two facets 41la, 411b. Up, ; Millennium, can be set to optically completely smooth surface (mirror surface), or also rough surface. In the present invention, in view of the fact that it is necessary to maintain the bismuth sheet with desired optical characteristics, it is preferred to set the enamel surface as a mirror surface. Preferably, the apex angle of the shovel 411 is set at 40 to 150. In the range. In general, in the backlight module of the crystal display device, when the ridge piece is disposed such that the rib forming surface faces the liquid = panel, the apex angle θ of the 稜鏡 column is in the range of about 8 〇〜, preferably It is 85~95. In the range. On the other hand, as shown in the above embodiment, when the cymbal 4 is disposed so as to form a face-to-face light guide, the 411 411 _ angle θ is 4 〇 2 and 5. In the range of the left and right, it is preferably 45 to 70. In the range. The domain column forming layer 44 is, for example, hard-dipped by the active energy ray, and the brightness of the surface light source device is considered to be high. The layer 44 preferably has a high firing rate. Specifically, | the refractive index is greater than or equal to better U is equal to Μ ° as the formation of the 稜鏡 column formation sound = hardening reversal, as long as it can be simply from the material line, the electric line to find activity light, _ Wei , 黯酉酉环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧环氧) Base) propylene vinegar resin is especially good. As such a hardened resin, 18 200815794 25645pif

的活性能量線硬化性組成物，考慮到操作性及硬化性等方面，較好的是多價丙烯酸酯及/或多價曱基丙烯酸酯（以下記作多價（曱基)丙烯酸酯）、單丙烯酸酯及/或單甲基丙烯酸酯（以下記作單（甲基)丙烯酸酯）、及由利用活性能量線的光聚合起始劑為主成分的組成物。作為代表性的多價（甲基)丙稀酸酉曰，可列舉多元醇聚（甲基)丙稀酸酯、聚酯聚（甲基)丙烯酸酯、環氧聚(甲基)丙烯酸酯、胺絲（甲基)丙稀酸酯等。上述多種多價（曱基）丙烯酸酯可單獨使用，或者使用兩種或兩種以上所構成的混合物。而且，作為單（甲美丙稀酸酯，可列舉單醇的單（曱基)丙稀_、多元醇的土 (曱基)丙烯酸酯等。力一万曲，无擴散層45是藉由使透光性樹脂451中含有大量透光性光擴散材料（光擴散粒子）松而構成，夢由使光，材料452突出自形成層狀的透光性樹脂45“ 表面，k而使光擴散層45的表面形成為光^層45的形成方法並無特別限制，可採用適當的 1。例如，可將透光性樹脂州溶解於劑中添加必要量的光擴散材料而製作塗料 ===基持43的表面後使其乾燥，藉此於表广'1、塗佈量、光擴散材料的重量平均粒現出必要的霧度，可適當地調材料的形狀來決定的’例 19 200815794 25645pif 的凹及凸錢的集合體般的形狀的鬲度過高，則於先擴散芦为卜右凹凸性芙妯π沾本^ 的邛分表面，凹凸與透光的二射光所成的角度容易超過來自該透光性基材的入射先㈣界角。此時’光擴散層45的 = ^先ί反射㈣致光損耗，從而導致料_置的亮度i 在#而^以先擴散層的凹凸的高度設為不會The active energy ray-curable composition is preferably a polyvalent acrylate and/or a polyvalent methacrylate (hereinafter referred to as a polyvalent (fluorenyl) acrylate) in view of workability and hardenability. A monoacrylate and/or monomethacrylate (hereinafter referred to as a mono(meth)acrylate) and a composition mainly composed of a photopolymerization initiator using an active energy ray. Typical examples of the polyvalent (meth) acrylate are polyhydric alcohol poly(methyl) acrylate, polyester poly(meth) acrylate, and epoxy poly(meth) acrylate. Amine (meth) acrylate and the like. The above various polyvalent (fluorenyl) acrylates may be used singly or as a mixture of two or more kinds. Further, examples of the mono (methacrylic acid ester) include mono(indenyl) propylene of a monool, and a soil (mercapto) acrylate of a polyhydric alcohol. The force is 10,000, and the non-diffusion layer 45 is used. The light-transmitting resin 451 is composed of a large amount of light-transmitting light-diffusing material (light-diffusing particles), and the light absorbing material 452 protrudes from the surface of the layered light-transmitting resin 45, and k is diffused. The method for forming the surface of the layer 45 to form the photo-layer 45 is not particularly limited, and an appropriate one may be employed. For example, a light-transmitting resin state may be dissolved in a solvent to add a necessary amount of a light-diffusing material to prepare a coating material === After the surface of the base 43 is dried, the desired average haze of the weight average of the coating amount and the light-diffusing material is obtained, and the shape of the material can be appropriately adjusted to determine 'Example 19 200815794 25645pif The concave shape of the concave and convex money is too high, and the angle of the concave and convex light is the angle of the concave and convex light. It is easy to exceed the incident (four) boundary angle from the light-transmitting substrate. At this time, 'light diffusion 45 first ^ = ί iv induced reflection light loss, thereby causing luminance opposed feed _ # i and ^ in order to set the height of the uneven diffusion layer does not

，表面產生51起如上述全反射的急峻傾斜的高度。淹二 ¥，較好的是設定為，溶辦⑽後的 ς足所使用的光擴散材料的重量平均粒子細：，’藉此可防止塗膜的厚度方向上的光擴散材斗重豐，仗而可抑制眩目。某酮作ίϊ:塗，吏用的溶劑，可列舉甲苯、甲基乙二同、曱基異丁基酉同、乙酸乙醋、乙酸丁醋、異丙醇、乙醇等m作為塗料的塗佈方法，可列舉凹版塗佈 gravure eGat)或唇σ塗佈⑽叫、使用刮刀式塗佈機 (comma coater)等的塗佈方法。作為透光性樹月旨初，只要是可分散光擴散材料452 且具奴_度_雜義，則可無制限制地使用。 5如此之透紐翻，可列舉魏_觸、聚胺醋系樹，、聚S旨系樹脂、丙烯酸系樹脂等熱塑性樹脂或者熱固性樹脂、活性能量線硬化㈣脂（_輻射線硬化樹脂）等’考慮到與透光性基材43及光擴散材料松之間的密接性等，較好的是從上述多種樹脂中選擇適當的材料。另外，可於透光性樹脂451中添加、含有均化劑、觸 20 200815794 25645pif 變劑、抗靜電劑 ----- 小1外夂认削哥。其中，兹i人上劑，可抑制光擴散材料的凝聚，並且可由曰形成凹凸。合易由先擴散材料作為光擴散材料452，可適當地 =、玻璃等無機系微粒子;聚甲基丙稀: 乙烤、指S旨、丙稀酸·苯乙烯共聚物 ^來本聚氰胺等交聯有機微粒子；或者聚錢^了綠、三亦可根據不同的目的而併用兩種或兩種二上^另外，料。作為光擴散材料的形狀並無限制 ^擴散材則形或旋轉橢圓體等形狀的光擴散不規耐擦傷性的觀點而言，較理相 =就袄向凹凸的成具有㈣面喊驗塗佈而形好的是使用交聯有機緖粒子，料松，較溶劑的交聯嶋微粒子在 451 的界舆==赌透過率，且提高面麵裝置的亮度，光擴，來提高射率吣與透光性概451 之差的折〜_，更好的是_〜_，^_之3差^好的是0.03 Λ 了存杏换私昆训&其好的疋_〜_。，了使先擴政層45的霧度為5G〜85% 光擴散層45中光擴散材料松的含量相對於2 '為15〜35 Wt%。若光擴散材料452的含月旨則光擴散層45的霧度會低於篇，而有面里光V裝1置5 21 200815794 25645pif 的^降低的傾向’而若光擴散5 度會超過^而有亮度降低的傾向。= 層45的霧度更好的是6〇〜85%。九擴政光擴散材料452的#旦1 μΓη，更好的里千均粒子徑〇1較好的是1〜8 材料452的ί量平均:子^好的是1〜5师。若光擴散者使缺陷隱蔽性H 色溫下降’或徑D1大於8 _，列光科452的重量平均粒子生眩目現象的傾向。 4 2會凝聚而有強烈地產 5〇μηι，較好的是小於等於二頁平均間S必須為小於等於隔s較好的是大於等、μηι。而且，局部峰頂平均間凹凸面而言，按照JIS Β二f:於，散層_ 度Rz須形成為小於等 94的規疋，十點平均粗 3 μιη，進而更好的是形成的疋形成為小於等於現象而言，抑制光擴散材料的凝取而阳。、對於抑制眩目散層45的凹凸面尤為重。+ :以上边方式形成光擴成為大於等於ο·5_，更好的度&較好的是形獲得良好的光擴散性及缺陷成為大於等於】阿。就是以上述方式形成光擴散層二的規面點而言，較理想的而且，對於光擴散層45的凹凸 -】购叫四凸的平均二;=，按照細_ 同（輪廓曲線要素的平均長 200815794 25645pif 乂好的疋形成為小於等於160 Μ""1，更好的是小於 ' 仲1，進而更好的是小於等於1〇〇好的是小於等於80 Mm。兀具好的内部====般的微粒子，有時會在塗佈液擴散材料452及透光=二5:53。此凝聚會根據因光的表面電位、塗佈時的塗細声J 廣放材料松的有域而〜…人為的~間）的長度或均化劑的有…、寻而交化。塗料的黏度較 ^The surface produces 51 steeply inclined heights as described above for total reflection. It is preferable to set the weight average particle size of the light-diffusing material used for the lameness after the solution (10): "This prevents the light-diffusing material bucket in the thickness direction of the coating film from being heavy, It can suppress glare. A ketone is used as a coating method for coatings, such as toluene, methyl ethanedicarboxylate, decyl isobutyl hydrazine, ethyl acetate vinegar, acetic acid butyl vinegar, isopropanol, ethanol, etc. A coating method such as a gravure coating gravure eGat) or a lip σ coating (10) or a comma coater may be mentioned. As the light transmissive tree, the light diffusing material 452 can be used without any limitation as long as it is a dispersible light diffusing material 452. (5) Such a smear, for example, a thermoplastic resin such as a Wei-touch, a polyamine vinegar tree, a poly-S resin, an acrylic resin, a thermosetting resin, an active energy ray hardening (tetra) grease (_radiation hardening resin), etc. 'In consideration of the adhesion to the light-transmitting substrate 43 and the light-diffusing material loose, it is preferred to select an appropriate material from the above various resins. In addition, it can be added to the light-transmitting resin 451, and contains a leveling agent, a touch agent, and an antistatic agent. Among them, it is possible to suppress the aggregation of the light-diffusing material and to form irregularities by ruthenium. The first diffusing material is used as the light diffusing material 452, and can be appropriately =, inorganic particles such as glass; polymethyl propylene: B-baked, S-shaped, acrylic acid/styrene copolymer, and the present melamine Waiting for cross-linking of organic microparticles; or collecting money for green, three, or two or two for two different purposes. The shape of the light-diffusing material is not limited to the viewpoint of the light diffusion irregular scratch resistance of the shape of the diffusing material or the shape of the spheroid or the ellipsoid, and the phase of the light-converging material has a (four) surface coating. The shape is good, the cross-linked organic particles are used, the material is loose, the cross-linking of the particles is more than the solvent, and the micro-particles in the boundary of 451 == gambling transmittance, and the brightness of the surface device is increased, and the light is expanded to increase the irradiance. Transparency 451 difference between the discount ~ _, better _ ~ _, ^ _ 3 difference ^ good is 0.03 Λ 存换换换昆昆昆昆昆其其其其其其其其其其其其其其其The haze of the first expansion layer 45 is 5G to 85%. The content of the light diffusion material in the light diffusion layer 45 is 15 to 35 Wt% with respect to 2'. If the light-diffusing material 452 contains a moon, the haze of the light-diffusing layer 45 will be lower than that of the article, and the surface-light V will be set to a lowering tendency of 5 21 200815794 25645pif 'and if the light spreads 5 degrees exceeds ^ There is a tendency for the brightness to decrease. = The haze of layer 45 is better 6 〇 85%. Nine expansion of the light diffusion material 452 #旦1 μΓη, better the average thousand particle diameter 〇1 is better 1~8 The average amount of material 452: the sub-good is 1~5 division. If the light diffuser causes the defect concealing H color temperature to decrease 'or the diameter D1 is greater than 8 _, the weight average particle of the luminescence 452 tends to be dazzling. 4 2 will condense and have a strong real estate 5〇μηι, preferably less than or equal to the average of two pages S must be less than or equal to s is better than equal, μηι. Further, in the case of the local peak-to-average uneven surface, according to JIS Β2f:, the scattering layer _ degree Rz shall be formed to be smaller than the rule of 94, and the ten-point average thickness is 3 μιη, and more preferably the formed 疋When it is formed to be less than or equal to the phenomenon, the condensation of the light diffusing material is suppressed and the anode is suppressed. The uneven surface of the scattered layer 45 is particularly heavy. + : The above method forms a light spread to be greater than or equal to ο·5_, and a better degree & preferably a shape to obtain good light diffusibility and a defect becomes greater than or equal to a. In terms of forming the surface of the light-diffusing layer 2 in the above manner, it is preferable that the unevenness of the light-diffusing layer 45 is obtained as an average of two convexities; =, according to the fine_the same (average of the contour curve elements) Long 200815794 25645pif 乂 good 疋 is formed to be less than or equal to 160 Μ ""1, better is less than 'secondary 1, and then better is less than or equal to 1 〇〇 is less than or equal to 80 Mm. ==== General particles, sometimes in the coating liquid diffusion material 452 and light transmission = two 5:53. This agglomeration will be loose depending on the surface potential of the light, the fineness of the coating during coating. There is a domain and ~ ... artificial ~ between the length or the leveling agent has ... ... and found. The viscosity of the paint is better than ^

的範圍内，更好的是40〜8〇mPa.s。當塗〇 120 mh.S 凝聚變得顯著時，凹凸面的平均' 向上的塗膜厚度方向上的凝聚變得顯著時，=;而且，當度RZ變大。凹凸面的十點平均粗另外為了抑制眩目現象，較理相 45的任意位置的半徑為7()μιη 散層寺於30 _的二次粒子453的個數為小於^於^為大於的是小於等於2個，進而更好的是箄個’較好的是，於光擴散層45的任意位置的半/於個。更理想區域内，長徑為大於等於20 _的二:A；^70 _的圓形小於等於3個，較好的是小於等於453的個數為於等於1個。如圖4的平面圖所示，’進而更好的是小凝聚而成的二次粒子453的平夕固光擴散材料452 此，二次粒子453的大小由長獲〖來^並非為圓形。因 23 200815794 25645pif 於以上實施形態中，是藉由塗佈含有透光性樹脂· . 及光擴散材料452的塗料而形成光擴散層45,通過改鐵光擴散材料452的添加量可輕易地調整光擴散層必的霧且可輕易地調整面光源裝置的亮度及視角等性能，故而 ^ 交好。然而，於本發明中，亦可藉由其他方法來形成具有凹凸面的光擴散層。例如，可預先使用化學蝕刻或噴砂、壓 ⑩ 紋輥㈣boss roll)等對透光性基材的表面進行粗面化處理，藉此形成凹凸面。而且，亦可於透光性基材上另行塗佈且附加含有透光性樹脂的塗膜，並使用模具進行轉$ 等，以賦予此透光性樹脂膜的表面凹凸構造。亦可組合使用兩種或兩種以上的上述方法，而形成具有不同的凹凸構造的複合凹凸面。以上，對稜鏡片4具有獨立於透光性基材43的稜鏡列形成層44的情況進行了說明，但於本發明中，透光性基材 _ 43與稜鏡列形成層44可由共同的構件構成。即，可於透光性基材43的表面形成稜鏡列。此時，透光性基材43可由透光率較兩的合成樹脂所構成。作為如此之合成樹脂，可為曱基丙烯酸樹脂、丙烯酸樹脂、聚碳酸酯系樹脂、聚 - 酯系樹脂、氯乙烯系樹脂。尤其是，因曱基丙烯酸樹脂的 …透光率鬲且耐熱性、力學特性、成形加工性優良，故而最佳。此甲基丙烯酸樹脂，是以甲基丙烯酸甲酯為主成分的樹脂，較好的是曱基丙烯酸曱酯為80 wt%或以上。圖3示意性地表示了由稜鏡片4引起的XZ面内偏光 24 200815794 2$645pif 的情況。於此圖3中，表示了來自XZ面内的導光體3的波峰光（對應於出射光分佈的波峰的光）的行進方向的— 例。自導光體3的光出射面33以角度α傾斜射出的大部分波峰光，入射至稜鏡列411的第1稜鏡面411a，由第2 稜鏡面411b的大致内面全反射後，大致向出光面42的法線方向行進’藉由光擴散層45的主要部分即凹凸構造的表面而擴散後射出。而且·，於YZ面内，亦具有如上所述的導光體背面34的稜鏡列的作用，從而可充分提高廣範圍的區域内出光面42的法線方向上的亮度。、 /另外，稜鏡片4的稜鏡列411的稜鏡面41la、411b的形狀並不僅限於完全的平面，其還可設為剖面衫角形狀或凸曲面形狀，藉此可進一步實現高亮度化及窄視角化。仙對於稜鏡片4而言，為了精確製作所期望的稜鏡列形 t原光學性能，並且抑制组裝作業時及使用度較好的是設為小於等於3 曲面部的寬 ^ 仁更好的是頂部平挺部哎於等於i _。於雜2 _，進而更好的是小如上所述的稜鏡列的形具有形狀轉印_模構件下方式貫現：使用形，上述形狀轉印面可轉旨片的表面進行賦 ^成由具有稜鏡列411的稜鏡 25 200815794 25645pif 列形成面所構成的入光面41。圖。圖5是表示稜鏡片的稜鏡列的形成的實施形態的示意 ^中，符號7表示於圓筒狀外周面形 ^^4! (^)〇由讀、鋼等金屬所構成。圖6是輥模7的斜、一立狀7輥1“购面形成有形狀轉印面I;; 1 面5。。於此咖剛件15的外側的面上形成有形狀= 如圖5所示，於輕模7上，沿其外周面即形狀轉印面 =供=透光性基材9 (43)，於_ 7與透光性基材9之間，自树脂槽12經㈣嘴13而連續供給活性能量性組成物10。於透光性基材9的外側，設置有用以供給的活性能量線硬化性組成物ω的厚度 _ ⑺聊。作為夹輕28，可使用金屬製親、橡膠製m 且’為了使活性能量線硬化性組成物1G的厚度均勻、，= 的是夾輥28的真圓度、表面粗度等經過高精度加工，於使用橡膠製報的情況下，較好的是橡膠硬度為大於等於6〇度的高硬度。从㈣’必醉確地婦活性能量線硬化性組成物10的厚度，可藉由廢力機構u來進行操作為此壓力機構11，可使用油壓故、空氣壓汽缸、各絲機構等’就機構的簡便性雜點而言，較好的是空氣壓 26 200815794 25645pif 汽缸。空氣壓可藉由壓力調整閥等來控制。的厚度_固定’較好的是將成物1()仲A、基材9之間騎Μ量線硬化性組成物10保&為固定的黏度。就黏度範圍而言，好=設為20〜3000mpa.s的範圍内，進；更好二: Γο ★ 。#㈣紐能麵硬錄組成物壓設定得極低或者將成形】;= 將夹屋設定得極低，則有壓力機構u無法維持穩定運作的傾向，從而會導致稜鏡部的厚度變得不固冑。而且，若使成形速度極快，則有因活性能量線的照射量不足而導致活性能量線硬化性組成物的硬化變得不完全的傾向。另一方面，藉由將活性能量線硬化性組成物1〇的黏度設為小於等於3_ mPa.S，可使硬化性組成物1〇充分遍及親模的形狀轉印面構造的細部，從而不會難以精確地轉印透鏡形狀，不會谷易因氣泡的混入而產生缺陷，亦不會因成形速度極低而導致生產性惡化。韻，為了使活性能量線硬化性組成物10的黏度保持固定，較好的是於樹脂槽12的外部或内部設置封裝加熱器(sheathheater)、溫水套管等熱源設備，以對硬化性組成物10進行溫度控制。在將活性能量線硬化性組成物10供給至輥模7與透光性基材9之間後，在使活性能量線硬化性組成物1〇夾在輥拉7與透光性基材9之間的狀態下，自活性能量線照射裝置14透過透光性基材9而照射活性能量、線，使活性能量線 27 200815794 25645pif 硬化性組成物1G聚合硬化，细形成於輥模7上的形狀轉印面進行轉印。作為活性能量_射裝置14，可使用化學反應用化學燈、低壓水賴、高壓水贿、金屬齒素燈、可見光《燈等。作為雜能量線賴射量，較好的是， 200〜600 nm波長的累計能量為〇1〜5〇左右。而且，作為活性能量線的照射環境，可在空氣中，亦可在氮氣或氬氣等惰性氣體環境巾。繼而，使由透紐基材9 (43) 、與由活性能量線硬化樹脂所形成的棱鏡列形成層 (44) 所構成的稜鏡片自輥模7脫膜。、返回至圖1，一次光源1是在Y方向上延伸的線狀光，，作為该一次光源1例如可使用螢光燈或冷陰極管。此 %，如圖1所不，一次光源丨並不僅限於設置在與導光體 3的一個侧端面相對向之位置，亦可視需要而亦進一步設置於相反側之側端面。光源反射裔2是減少一次光源〗的光損耗而將一次光源1的光引導至導光體3的裝置。作為光源反射器2的材質，例如可使用表面具有金屬蒸鍍反射層的塑膠薄膜。如圖所示，光源反射器2避開稜鏡片4，而自光反射元件5 的端緣部外表面經過一次光源丨的外表面而捲繞向導光體 3的光出射面端緣部。另一方面，光源反射器2亦可自光反射元件5的端緣部外表面經過一次光源丨的外表面而捲繞向稜鏡片4的出光面端緣部。亦可將與如此之光源反射器2相同的反射構件安裝於導光體3的光入射端面31以外的側端面上。 28 200815794 25645pif 忭為光反射元件射層的塑膠片。本發明中對於導光體3的背面34藉由二== 等，來取代反射片。 Μ鍍相形成的先反射層 3、稜鏡片4及光反射元件反射器2、導光體片4的出光面42)上配置透先f衣置的發光面（稜鏡 8，藉此槿赤以太於aH t ’夜日日面板（液晶顯示元件）示裝置。觀察者夂上為:編組的液晶顯自面光源裝置的稜鏡片4的衣置。一液晶面板8的入射面81，經過與圖俊次幻身!出的光入射至後，自觀察面82出射。就差/、回象貢訊^號相應的調變言，較好的是錢察φ 82? H眩功能且可抑制眩目而 G1為大於等於25，更度光澤值（JIS Z 8741) 於等於35的具有防眩功能等於30，尤其好的是大的面）。而且，就防止眩目 ^過料處理或防眩處理 82是6〇度光澤值G1為大於^而舌’較好的是’觀察面處理或防眩處理的面）。而且、/ 90的眩光面（未經消光好的是，入射面81設為防眩面就^眩目的觀點而言，較值G1與入射面81的6〇产規察面82的6〇度光澤於等於1，更好的是大於jG2的比率⑴紐為大 Μ。而且，就防止眩目的觀、^2，尤其好的是大於等於 82的十點平均粗度&為小4:言，較好的是，觀察面於本實施形態中，稜鏡片、4;2_。甲尤其是光擴散層45具有 29 200815794 25645pif 如上^的特徵，因此可減少液晶顯示裝置的眩目現象，而不自導致巧源錢麵晶顯林⑽亮度大幅下降。炎目^上實施形態中，使用了具有稜鏡列的稜鏡片來作麵的透鏡片，但本發明中亦可使用具有除此以、i見列’例如具有晶狀體狀透鏡列的晶狀體狀透鏡 ^以上實施形態中，尤其是當光擴散層衫的凹凸面凹凸的，部峰了頁平均間隔s為小於等於％ _時，棱鏡片的光擴散層45可紐發揮域散魏，因此錢於其上擴散片。但是，於本發财，尤其是當光擴散芦 45的凹凸面的凹凸的局部峰頂平均間隔/ :併】，擴散片，可減少液晶顯示裝置二象亚可進一步提南光擴散性，從而可提高亮度。另外的光擴散片配置於稜鏡片與液晶面板之二鏡片的弟2面射出的光人射於其上。片的至少-個面設為凹凸形狀面，該凹部：頂平均間隔S為小料於％，，較好的是小^= μπι’且十點平均粗度匕為小於等於4_ 等於3陣，更好的是小於等於2 _。凹凸形狀面，對於抑制眩目現象尤為重要。八小成作為光擴散片’是以於透光性基材的_個面光擴散功能層而構成的光擴散片為例示。此户，^去有 =層是藉由使透巧樹脂中含有透紐光^散材成，凹凸形狀面疋错由自透光性樹脂的表面突參少材料而形成的。作為透光性_及光擴散材料，可使用 1 30 200815794 25645pif 是—，進而好的是3。〜 ==:’更好的 Hz小於等於2〇%時，視角會降低、眩目=於，當霧度Within the range, the better is 40~8〇mPa.s. When the aggregation of the coating 120 mh.S becomes remarkable, the aggregation of the uneven surface in the direction of the average thickness of the coating film becomes remarkable, and the degree RZ becomes large. The ten-point average roughness of the uneven surface is additionally to suppress the glare phenomenon, and the radius of the arbitrary position of the phase 45 is 7 () μιη. The number of the secondary particles 453 of the scattered layer of 30 _ is less than ^ ^ is greater than It is 2 or less, and more preferably, it is preferably half or more at any position of the light diffusion layer 45. In a more ideal region, the long diameter is greater than or equal to 20 _ of two: A; ^70 _ is less than or equal to three, and preferably less than or equal to 453 is equal to one. As shown in the plan view of Fig. 4, it is further preferable that the secondary solid particles 453 of the small aggregates are 453. The size of the secondary particles 453 is not round. In the above embodiment, the light diffusion layer 45 is formed by applying a coating material containing a light-transmitting resin and a light-diffusing material 452, and can be easily adjusted by adding the amount of the iron-light-diffusing material 452. The light diffusion layer must have a fog and can easily adjust the brightness and viewing angle of the surface light source device, so that it is good. However, in the present invention, a light diffusion layer having a concave convex surface may be formed by other methods. For example, the surface of the light-transmitting substrate may be subjected to a roughening treatment by chemical etching or sand blasting, a blanket roll, or the like in advance to form an uneven surface. In addition, a coating film containing a light-transmitting resin may be additionally applied to the light-transmitting substrate, and a mold may be used to transfer the film to the surface of the light-transmitting resin film. It is also possible to use two or more of the above methods in combination to form a composite uneven surface having a different uneven structure. Although the case where the crotch sheet 4 has the matrix formation layer 44 which is independent of the translucent base material 43 has been described above, in the present invention, the translucent base material _43 and the array formation layer 44 may be common. Component composition. That is, a matrix can be formed on the surface of the light-transmitting substrate 43. At this time, the light-transmitting substrate 43 can be composed of a synthetic resin having a light transmittance of two. As such a synthetic resin, a mercapto acrylic resin, an acrylic resin, a polycarbonate resin, a poly-ester resin, or a vinyl chloride resin can be used. In particular, since the fluorenyl-based acrylic resin has excellent light transmittance, heat resistance, mechanical properties, and moldability, it is most preferable. The methacrylic resin is a resin containing methyl methacrylate as a main component, and preferably decyl methacrylate is 80 wt% or more. Fig. 3 schematically shows the case of XZ in-plane polarized light 24 200815794 2$645pif caused by the cymbal 4. In Fig. 3, an example of the traveling direction of the peak light (light corresponding to the peak of the outgoing light distribution) of the light guide 3 in the XZ plane is shown. Most of the peak light that is obliquely emitted from the light exit surface 33 of the light guide 3 at an angle α is incident on the first pupil surface 411a of the matrix 411, and is totally reflected by the substantially inner surface of the second pupil surface 411b. The normal direction of the surface 42 is propagated by the surface of the uneven portion of the main portion of the light diffusion layer 45, and is emitted. Further, in the YZ plane, the above-described arrangement of the light guide back surface 34 is also performed, so that the luminance in the normal direction of the light-emitting surface 42 in a wide range can be sufficiently improved. Further, the shape of the crotch surfaces 41a1, 411b of the crotch 411 of the crotch panel 4 is not limited to a complete plane, and may be a cross-sectional angle or a convex curved shape, thereby further achieving high brightness and Narrow viewing angle. For the cymbal 4, in order to accurately produce the desired optical properties of the 稜鏡-shaped shape, and to suppress the assembly work and the degree of use, it is better to set the width of the curved surface portion to be less than or equal to 3 The top flat portion is equal to i _. Further, it is preferable that the shape of the array as described above has a shape transfer type, and the mold member is formed in a lower manner: the shape is used, and the surface of the shape transfer surface can be transferred to the surface of the sheet. The 稜鏡25 200815794 25645pif column having the array 411 forms a light incident surface 41 formed by a surface. Figure. Fig. 5 is a schematic view showing an embodiment of formation of a matrix of a cymbal sheet. In Fig. 5, reference numeral 7 denotes a cylindrical outer peripheral surface shape ^^4! (^), which is composed of a metal such as a read or a steel. Figure 6 is a perspective view of the roll mold 7, a vertical 7-roller 1 "the surface is formed with a shape transfer surface I;; 1 surface 5. The outer surface of the coffee material 15 is formed with a shape = as shown in Fig. 5. In the light mold 7, along the outer peripheral surface, that is, the shape transfer surface = supply = light transmissive substrate 9 (43), between _ 7 and the light-transmitting substrate 9, from the resin tank 12 through the (four) mouth 13 The active energy-sensitive composition 10 is continuously supplied. The thickness of the active energy ray-curable composition ω to be supplied is provided outside the light-transmitting substrate 9 (7). As the clip light 28, a metal-made affinity can be used. In order to make the thickness of the active energy ray-curable composition 1G uniform, the true roundness and surface roughness of the nip roller 28 are processed with high precision, and in the case of using the rubber report, Preferably, the rubber hardness is a high hardness of 6 大于 or more. From (4) the thickness of the hardening composition 10 of the energy-active energy ray, the pressure mechanism 11 can be operated by the waste mechanism u. Oil pressure, air pressure cylinder, wire mechanism, etc. can be used. In terms of the simplicity of the mechanism, air pressure is preferably 26 20081. 5794 25645pif Cylinder. The air pressure can be controlled by a pressure regulating valve, etc. The thickness _fixed is preferably the product 1 () secondary A, the substrate 9 between the riding amount of the line hardening composition 10 & For a fixed viscosity, in terms of viscosity range, good = set to 20~3000mpa.s, enter; better two: Γο ★. #(4) New energy surface hard recording composition pressure is set very low or will Forming];= If the clamping room is set to a very low level, there is a tendency for the pressure mechanism u to maintain stable operation, which may result in the thickness of the crotch portion becoming unfixed. Moreover, if the forming speed is extremely fast, there is a cause When the amount of irradiation of the active energy ray is insufficient, the curing of the active energy ray-curable composition tends to be incomplete. On the other hand, the viscosity of the active energy ray-curable composition 1 设为 is set to 3 _ mPa or less. S, the curable composition can be sufficiently spread over the fine portion of the shape transfer surface structure of the mold, so that it is difficult to accurately transfer the lens shape, and the valley is liable to be defective due to the incorporation of bubbles, and is not formed by the formation. The speed is extremely low and the productivity is deteriorating. The viscosity of the active energy ray-curable composition 10 is kept constant, and it is preferable to provide a heat source device such as a sheath heater or a warm water jacket on the outside or inside the resin tank 12 to perform the hardening composition 10 After the active energy ray-curable composition 10 is supplied between the roll mold 7 and the light-transmitting substrate 9, the active energy ray-curable composition 1 〇 is sandwiched between the roll 7 and the light-transmitting group. In the state between the materials 9, the active energy ray irradiation device 14 transmits the active energy and the line through the light-transmitting substrate 9, and the active energy ray 27 200815794 25645pif hardenable composition 1G is polymerized and hardened, and is finely formed in the roll mold 7 The transfer of the shape transfer surface on the upper side. As the active energy radiation device 14, a chemical lamp for chemical reaction, a low-pressure water, a high-pressure water bribe, a metal dentate lamp, a visible light lamp, or the like can be used. As the amount of the hybrid energy beam, it is preferable that the cumulative energy of the wavelength of 200 to 600 nm is about 〜1 to 5 。. Further, as the irradiation environment of the active energy ray, it may be in the air or in an inert gas atmosphere such as nitrogen or argon. Then, the crucible composed of the translucent base material 9 (43) and the prism array forming layer (44) formed of the active energy ray-curable resin is released from the roll mold 7. Returning to Fig. 1, the primary light source 1 is linear light extending in the Y direction, and as the primary light source 1, for example, a fluorescent lamp or a cold cathode tube can be used. This %, as shown in Fig. 1, is not limited to being disposed at a position opposite to one side end surface of the light guide body 3, and may be further disposed on the opposite side end surface as needed. The light source reflector 2 is a device that reduces the light loss of the primary light source and directs the light of the primary light source 1 to the light guide 3. As the material of the light source reflector 2, for example, a plastic film having a metal vapor-deposited reflective layer on its surface can be used. As shown in the figure, the light source reflector 2 avoids the cymbal 4, and the outer surface of the edge portion of the light reflecting element 5 passes through the outer surface of the primary light source 而 and is wound around the edge of the light exit surface of the light guide 3. On the other hand, the light source reflector 2 may be wound from the outer surface of the end edge portion of the light reflecting member 5 through the outer surface of the primary light source 卷 to the edge portion of the light exit surface of the cymbal 4. The reflection member similar to the light source reflector 2 may be attached to the side end surface other than the light incident end surface 31 of the light guide 3. 28 200815794 25645pif 忭 is a plastic sheet with a light reflecting element. In the present invention, the back surface 34 of the light guide 3 is replaced by a second == or the like in place of the reflection sheet. The light-emitting surface of the first reflective layer 3, the ruthenium sheet 4, the light-reflecting element reflector 2, and the light-emitting surface 42 of the light-guide sheet 4 is formed on the light-emitting surface of the first light-reflecting layer 3 (the light-emitting surface 42). The ether is used in the aH t 'night day panel (liquid crystal display element) device. The observer is: the grouped liquid crystal display is mounted on the cymbal 4 of the surface light source device. The incident surface 81 of the liquid crystal panel 8 passes through Figure Jun is a phantom! After the light is incident, it will emerge from the observation surface 82. It is worse, and the corresponding tone of the Gongxiang ^ is correspondingly changed. It is better to check the φ 82? H glare function and suppress the glare. For example, G1 is 25 or more, and the gloss value (JIS Z 8741) is equal to 30 with an anti-glare function equal to 30, and particularly preferably a large surface). Further, the glare prevention treatment or the anti-glare treatment 82 is a surface in which the glossiness G1 is greater than ^ and the tongue is preferably the surface of the observation surface treatment or the anti-glare treatment. Moreover, the glare surface of /90 (the opacity is good, the entrance surface 81 is set to be an anti-glare surface, and the value of G1 and the entrance surface 81 of the 6-inch production surface 82 is 6 degrees. Gloss is equal to 1, more preferably greater than jG2 ratio (1) New is big. Moreover, to prevent glare, ^2, especially good is greater than or equal to 82, the average thickness of the point & is small 4: Preferably, the viewing surface is in the embodiment, the cymbal sheet, 4; 2 _. A, especially the light diffusing layer 45 has the characteristics of 29 200815794 25645pif, so that the glare of the liquid crystal display device can be reduced without Since the brightness of the Qiaoyuan Qianjingjinglin (10) has been greatly reduced. In the embodiment of the invention, a lens sheet having a tantalum sheet is used as the surface, but the present invention can also be used in addition to i see a column, for example, a lens lens having a lens-like lens array. In the above embodiment, in particular, when the unevenness of the uneven surface of the light-diffusing layer is greater than or equal to % _, the prism sheet is The light diffusion layer 45 can play a role in the domain, so the money spreads on it. However, in the present Fortune, especially when the local peaks of the uneven surface of the light-diffusing reed 45 are evenly spaced, the diffusion sheet can reduce the diffusibility of the liquid crystal display device. The light diffusing sheet is disposed on the second surface of the two lenses of the cymbal and the liquid crystal panel. The at least one surface of the sheet is a concave-convex shape surface, and the concave portion: the top average interval S is small in %, preferably small ^= μπι' and the ten point average roughness 匕 is less than or equal to 4_ equals 3 arrays, more preferably less than or equal to 2 _. Concave-convex shape surface, for suppressing glare It is particularly important that Ba Xiaocheng is a light-diffusing sheet, which is an example of a light-diffusing sheet which is formed by a light-diffusing functional layer of a light-transmitting substrate. The resin contains a transparent material, and the surface of the uneven surface is formed by a small amount of material from the surface of the light-transmitting resin. As the light-transmitting material and the light-diffusing material, 1 30 200815794 25645pif is used — And then good is 3. ~ ==: 'Better Hz small Equal 2〇%, the viewing angle will reduce glare in =, when the haze

Hz超過70%時，亮度會降低。- π%;而當霧度凹凸形狀面的光擴散材料〜，更好的是i 較好若該光擴散材料的重量平均粒子徑D1=疋1〜5 _。通過光擴散功能層的光線會被著色而導致而_，則有時溫降低，或者導致缺陷隱蔽性皮=而===置的色量平均粒子徑D〗士仇q * 光擴政材料的重 1大於8_，則會有眩目現象變強的傾向 [實施例] 以下，根據實施例更具體地說明本發明。實施例1 所示，製作與如圖1〜圖3所示的稜鏡片、面光源裝置及液晶顯示裝置。尤 r ΐ光性基材43，使用厚度為188 μηι的PET薄膜白司製造，商品名A43GG)。作為構成光擴散層椒樹脂)’使用折射率為L55的聚酯⑽S) #2=0、纺織公司製造，商品名Vyl〇n#2〇〇)，使Vyl〇n 以/辰度達到26 wt°/〇的方式溶解於MEK (甲基乙基酉同）與甲苯的混合溶劑（混合比率各5Qwt%)中，製成^ 佈液。作為光擴散材料，使麟射率為1.49且重量平均二 31 200815794 25645pif 子徑為3.2 μπι的PMMA交聯微粒子，將該PMMA交聯微粒子添加至上述塗佈液中，以使其相對於透光性樹脂為 19.7 wt%，之後，加以攪拌混合，以調製出含有光擴散材料的塗佈液（黏度：50 mPa.S )。使用凹版塗佈法，以15 m/min的線速度，將上述塗佈液塗佈於上述PET薄膜上並使其乾燥，以使溶劑乾燥後的平均厚度為5 μπι，藉此於PET薄膜的單面上形成具有基 _ 於光擴散材料的凹凸構造，即具有凹凸面的光擴散層。對於所獲得的光擴散層，使用霧度計（日本電色公司製造，商二名NDH2000)’以使光擴散層面向受光機侧的方式女襄霧度計，測定出全光線透過率（JIS K 7316) Tt及霧度 jJIS K 7136) Haze。其結果為，全光線透過率為92.60〆0 ’ 測定類別粗度測定測定長度 5.0 mm 截斷類別 2RC (相位非補償）傾斜補正最小平方直線補正截斷波長 0.8 mm 測定倍率 χ20Κ 1測定速度 0.15 mm/s •觸針頂端半徑 1 μπι ，度為64.7%。而且，使用表面粗度計（東京精密公匐製，，商品名SURFCOM 1500DX-3DF)，在以下條件卞測定出光擴散層的凹凸面的凹凸的局部峰頂平均間隔s、平 _ 均間隔Sm及十點平均粗度长z (JISB 〇6〇1一1994)。 32 200815794 25645pifWhen Hz exceeds 70%, the brightness will decrease. - π%; and when the haze has a light-diffusing material of a concave-convex shape surface, it is more preferable that i is preferable if the weight-average particle diameter of the light-diffusing material is D1 = 疋1 to 5 _. The light passing through the light-diffusing functional layer will be colored and caused by _, then the temperature will decrease, or the defect will be concealed. ==== Set the color average particle diameter D〗士仇q * Light expansion material When the weight 1 is larger than 8 mm, the glare phenomenon tends to be strong. [Examples] Hereinafter, the present invention will be more specifically described based on examples. As shown in the first embodiment, a cymbal sheet, a surface light source device, and a liquid crystal display device as shown in Figs. 1 to 3 were produced. The urethane substrate 43 is made of a PET film of 188 μηι, manufactured by Bai Shi, trade name A43GG). As a light-diffusing layer of pepper resin) 'Use polyester (10) S with refractive index L55) #2 = 0, manufactured by Textiles, trade name Vyl〇n#2〇〇), make Vyl〇n reach /wt by 26 wt The mixture was dissolved in a mixed solvent of MEK (methylethyl hydrazine) and toluene (mixing ratio of 5 Qwt%) to prepare a liquid. As a light-diffusing material, PMMA cross-linked fine particles having a lining rate of 1.49 and a weight average of 31 200815794 25645 pif having a sub-path of 3.2 μm were added to the above-mentioned coating liquid to make it relatively transparent. The resin was 19.7% by weight, and then stirred and mixed to prepare a coating liquid (viscosity: 50 mPa·s) containing a light-diffusing material. The coating liquid was applied onto the PET film at a line speed of 15 m/min by a gravure coating method and dried to have an average thickness of 5 μm after the solvent was dried, whereby the PET film was used. A concavo-convex structure having a base-light diffusing material, that is, a light-diffusing layer having an uneven surface, is formed on one surface. For the obtained light-diffusing layer, a haze meter (manufactured by Nippon Denshoku Co., Ltd., NDH2000) was used to measure the total light transmittance (JIS K) so that the light-diffusing layer faces the receiver side. 7316) Tt and haze jJIS K 7136) Haze. As a result, the total light transmittance is 92.60 〆 0 'measurement type roughness measurement length 5.0 mm cutoff type 2RC (phase uncompensated) tilt correction least square straight line correction cutoff wavelength 0.8 mm measurement magnification χ20Κ 1 measurement speed 0.15 mm/s • The tip of the stylus has a radius of 1 μm and a degree of 64.7%. In addition, the local peak-top average interval s, the flat_average interval Sm, and the unevenness of the unevenness of the uneven surface of the light-diffusing layer were measured under the following conditions using a surface roughness meter (trade name: SURFCOM 1500DX-3DF) The ten-point average thickness is long z (JISB 〇6〇1 - 1994). 32 200815794 25645pif

Rl Sm為38.] 承平均間隔S為27.0 μΠ1，平均間用光學顯微鏡（〇lv 平均粗度匕為U㈣。而且，使 5〇〇倍的倍率，公司製造，商品名MX61L)，以凝聚狀態。祭光擴散層中的光擴散材料的為70 μιη的圓^二先擴散層表，的任意位置上的半捏的個數最多為！： 2 大於等於30 ’的二次粒子Rl Sm is 38.] The average interval S is 27.0 μΠ1, and the average interval is optical microscopy (〇 lv average roughness 匕 is U (four). Moreover, 5 times magnification, manufactured by the company, trade name MX61L), to agglomerate state . The light-diffusing material in the light-diffusing layer is a 70 μm round-shaped first diffusion layer, and the number of half-pinches at any position is at most! : 2 secondary particles greater than or equal to 30 '

Μ。Ϊ们。圖表示該光擴散層的光學顯微鏡相拓來柩θ田，顯不有短邊為1〇〇|1111且長邊為150{1111的 η/用於進行尺寸參照（以下的顯微鏡相片中亦相问）〇度 l0mm、400nimX690 nim 的基於 JIS 標準的第 3銅之薄板表面，形成形狀與棱鏡列形成面的形狀相對心=狀轉印面’而獲得模構件。此處，稜鏡列形成面的目標形狀為，並列配置有間距Ρ = 50 μιη、頂角θ = 65。的多個稜鏡列411。、、fe而準備直控220 mm、長度450 mm的不鏽鋼製圓筒狀輥’於其外周面上捲繞模構件，並利用螺絲進行固定，獲得輥模。於該輥模7與橡膠輥之間，沿輥模而供給設有上述光擴散層的透光性基材，利用連接於橡膠輥的空氣壓汽缸’使透光性基材夾在橡膠輥與輥模之間。另一方面，將以下紫外線硬化性組成物的黏度調整為300 mPa‘S/25°C = 50重量份的苯氧基乙基丙烯酸醋（大阪有機化學工業公司製造的VISCOAT#192) ; 50重量份的雙酚 A-二環氧-丙烯酸酯（共榮公司油脂化學工業公司製造的環 33 200815794 25645pif 氧酯3000A) ; 1·5重量份的2-經基-2-甲基小苯基-丙烧小 §同（CibaGeigy 公司製造的 Darocure 1173 ):。將該紫外線硬化性組成物，供給至由橡膠輥而與輥模夾在一起的透光性基材中的、賦有上述光擴散層的面的相反側的面。一邊使輥模旋轉，一邊將紫外線硬化性組成物夾在輥模與透光性基材之間，在此狀態下，自紫外線照射衣置射出I外線’以使紫外線硬化性組成物聚合硬化，並 • 轉印輥模的形狀轉印面的稜鏡列圖案。其後，脫離輥模，獲得稜鏡片。將以上述方式所獲得的稜鏡片切割成14·1 W (寬）的大小，如圖1及圖2所示，以使稜鏡列形成面朝下的方式，將上述切割出的稜鏡片載置於侧面配置有冷陰極管的大小為14.1 W (寬）的丙烯酸樹脂製導光體的光出射面上，並用反射片覆蓋另一側面及背面，從而獲得面光源裝置。於該面光源裝置中，點亮冷陰極管，使用亮度計（T〇pc〇n公 _ 司製造’商品名腕一7)測定出法線亮度及半值角。其結果為，法線亮度為3l6〇Cd/m2，丰值角為18.7。。於以上述方式獲得的面光源裝置的稜鏡片上，載置透過型液晶面板。該液晶面板的特性如下所示：由光澤計（日 H 本電色工業公司製造，商品名VGS_3〇〇A)所測定出的觀、察面（防眩面）的60度光澤值G1為4δ·6，入射面（防眩面）的60度光澤值G2為31·2，㈤㈤的比為^，觀察 '面的十點平均粗度Κ4〇·8μπι，像素數χ(}Α(_ηΜHey. Let's go. The figure shows the optical microscope phase extension of the light-diffusing layer, 柩θ田, which shows that the short side is 1〇〇|1111 and the long side is 150{1111 η/ for size reference (the following microscope photo also shows Q) The surface of the third copper thin plate based on the JIS standard of the twist of l0 mm and 400 nim X 690 nim is formed to have a shape and a shape of the prism column forming surface opposite to the center of the transfer surface to obtain a mold member. Here, the target shape of the tantalum forming surface is such that the pitch Ρ = 50 μηη and the apex angle θ = 65 are arranged in parallel. Multiple queues 411. In addition, a stainless steel cylindrical roll of 220 mm and a length of 450 mm was prepared, and a mold member was wound around the outer peripheral surface thereof, and fixed by a screw to obtain a roll mold. Between the roll die 7 and the rubber roller, a light-transmitting substrate provided with the light-diffusing layer is supplied along a roll die, and the light-transmitting substrate is sandwiched between the rubber roller and the air cylinder connected to the rubber roller. Between the roll molds. On the other hand, the viscosity of the following ultraviolet curable composition was adjusted to 300 mPa's / 25 ° C = 50 parts by weight of phenoxyethyl acrylate vinegar (VISCOAT #192 manufactured by Osaka Organic Chemical Industry Co., Ltd.); 50 weight Parts of bisphenol A-diepoxy-acrylate (ring 33 200815794 25645 pif oxyester 3000A manufactured by Kyoei Oil & Fats Chemical Industry Co., Ltd.); 1.5 parts by weight of 2-pyridyl-2-methyl small phenyl group -丙烧小§同 (Darocure 1173 by CibaGeigy):. The ultraviolet curable composition is supplied to the opposite side of the surface of the light-transmitting substrate sandwiched by the rubber roll and provided with the light-diffusing layer. While the roll mold is rotated, the ultraviolet curable composition is sandwiched between the roll mold and the light-transmitting substrate, and in this state, the I outer line ' is emitted from the ultraviolet irradiation coating to polymerize and cure the ultraviolet curable composition. • The pattern of the transfer surface of the transfer roller die. Thereafter, the roll mold was released, and a crepe sheet was obtained. The cymbal obtained in the above manner is cut into a size of 14.1 W (width), as shown in FIG. 1 and FIG. 2, and the cut cymbal is carried in such a manner that the cymbal is formed face down. The light-emitting surface of the acrylic light guide body having a size of 14.1 W (width) on the side of the cold cathode tube was placed on the side, and the other side surface and the back surface were covered with a reflection sheet to obtain a surface light source device. In the surface light source device, the cold cathode tube was lighted, and the normal brightness and the half value angle were measured using a luminance meter (manufactured by T〇pc〇n ’ 司司商品腕。。。 7). As a result, the normal brightness is 3l6〇Cd/m2, and the richness angle is 18.7. . A transmissive liquid crystal panel was placed on the ruthenium of the surface light source device obtained in the above manner. The characteristics of the liquid crystal panel are as follows: The 60-degree gloss value G1 of the observation and inspection surface (anti-glare surface) measured by a gloss meter (manufactured by H. Electric Co., Ltd., trade name VGS_3〇〇A) is 4δ. ·6, the 60-degree gloss value G2 of the incident surface (anti-glare surface) is 31·2, and the ratio of (5) (five) is ^, and the average thickness of the ten-point of the 'face is Κ4〇·8μπι, and the number of pixels χ(}Α(_ηΜ)

GraphicsArray)的14J w (寬）液晶面板。該液晶顯示裝 34 200815794 25645pif 置中，使面光源裝置笋夯，& 時觀察眩目的情況，^ ^用液晶面板顯示白圖像，此流暢的質感的醒目晝^見4乎無眩目現象，獲得具有非常實施例2 且重量平均粒子徑為3 里比為30%、折射率為149 料，將該光擴散材料添==PMMA _微粒子的材樹脂為20·〇 wt%，從 ^液中，使其相對於透光性此以外，以與實施===度調整為55峨·8,除對於所獲得C式形成光擴散層。定出3政層，以與實施例1相同的方式測疋出王先線透過率及霧度。la 方式測 93.巩，霧度為70.4%。而日/、、、、、口果一為王先線透過率為定出光擴散層的日凸_，叫錢例丨相_方式測均間隔加及十點平^=1部峰頂平均間隔8、平間隔s為27.6 μπι，平均‘ Z。t果為，局·峰頂平均度 Rz A Sm* 53·9μηι，十點平均粗檐将爲H、μΠ1。而且，以與實施例1相同的方式觀察光表H ΐ擴散#料的凝聚狀態。其結果為，光擴散層二:的任f置上半徑為7〇_的圓形區域中長徑大於等子的個數最多為1個。圖9表示該光擴放層的光學顯微鏡相片。 ^而’以與貫麵丨朗的方式形成稜制形成層，隻传錢片，使用該稜鏡片且以與實施例〗相同的方式製 200815794 25645pif 作面光源裝置。於該面光源裝置中，广t每方式測定出法線亮度及半值角。立妹/、、只知例1相同的 3058 Cd/m2，半值角為19·4。。，、結果為，法線亮度為進而’使㈣面光源裝置，以鱼製作液晶顯示裝置。於該液晶顯示壯例1相同的方式 1相同的方式觀察眩g情況時，、中二當以與實施例得具有非常流暢的質感的醒目晝士。'乎無眩目現象，獲實施例3 於以與實施例1相同的方式製片上，载置透過型液晶面板。該光源裝置的稜鏡 1 ^ =睪㈣為9,9 ’入射面(防眩面眩== G2為3ΐ·3，G1/G2的比為3 ]，^〜 ^ 60度先澤值為〇.〇2 μιη，嗲、夜曰面柘:務本祭面的十點平均粗度Rz 曰疋像素數咖的1(1 W…笼曰曰面板。於該液晶顯示裝置中祐（尾）液，察眩目的情況時，發現幾乎;上= 苇流暢的質感的醒目晝質。 &传具有非比較例1 作為光擴散材料，使用折射率A 徑為7.8 μιη的PMMA交聯，、、、. 里w均粒子子添加至塗佈液t㈤2Ϊ 將祖交聯微粒性齡^ 為1 mPa.S)，以使其相對於透光『玍树月日為25 wt%，並以〗η / 乂 10 m/mm的線速度進行塗佈，除 36 200815794 25645pif 此以外’以與實施例〗相同的方對於所獲得的光擴散層，以擴放層。定出全光線透過率及霧m、例1，同的方式测 9樓，霧度為79.6%。而且，以、、^4;王，線透過率為定出光擴散層的凹凸面的 ^ 目同的方式測均_及十點平均粗間隔S為57.4 _，平了果為，局轉頂平均粗度Rz為72降%為⑽·1降’十點平均中，廣散材料的凝聚狀態。其結果為，光二: i；^〇置上半#為7()师的圓形區域中長徑大於 :於30 _的二次粒子的個數最多為$個。圖w表干= 光擴散層的光學顯微鏡相片。 ^ 奸以與實施例1相同的方式形成稜鏡列形成層， :于广’使用該稜鏡片且以與實施例1相同的方式擎 =絲置。於該面光源裝置中，以與實施例14上亮度及半㈣。其結果為，法線亮度為 2621 Cd/m，半值角為 22.2。。進而’使肋面辆、裝置，以與實施例丨相同的方 =乍液晶顯示裝置。於概晶顯示裝置中，當以與實目同的方式觀察眩目的情況時，發現有非常強的眩象，僅能獲得無法入目的晝質。兄比較例2 '作為光擴散材料，使用折射率為149且重量平均粒子 37 200815794 25645pif :為8.0 _的PMMA交聯微粒子’將該膽子添加至塗佈液中（黏度為53 mPa.s )，以使 2 =脂為^%，進行塗佈，以使溶__平均= 除此以外，以與實施们_的方式形成光擴^ 對於所獲得的光擴散層，以與實定出全光線透過率及霧度。其結果為，全;：、::：定出光擴散層的凹凸面的凹凸的局部聲==二式測均間隔Sm及十點半均粗度Rz。盆兔千^隔S、平間隔S為〜，平均間隔心二局== 度Rz為9·9 μπι。而且，以鱼實％平句粗擴散層中的光擴散材料的凝聚狀能===方式觀察光表面的任意位置上半徑為7G_。形麵散層於30 μιη的二次粒子的個數最多為⑽。圖=大=寺擴散層的光學顯微鏡相片。表不該光進而’以與貫施例1相同的獲得稜鏡片，使用該稜鏡片且以與^施例〗夂=列形成層’ 作面光源裝置。於該面光源裝置中，、以盘目同的方式製 2方式測，亮度及半值角。其結果 2373 Cd/m2,半值角為22 4〇。勹去線壳度為進而，使用該面光源裝置，盥每製作液晶顯示裝置。於該液晶顯示裝^ =相同的方式 1相同的方式觀察眩目的情況時，發現=與貫施例毛見有非吊強的眩目現 38 200815794 25645pif 象’僅能獲得無法入目的晝質。而且，由於全光線透過率 =的^線亮度降低至2373 _，從而僅能獲得非比較例3 你甘f光擴散材料添加至塗佈液中（黏度為41 mPa.s)，以乾燥15 ^並進行塗佈’以使溶劑同的方式形成光^散層。，此以外，以與實施例！相定出’㈣實施例1相同的方式測 95.5%，tt^=其結果為，全光線透過率為務度马7«3.9彳。而且，以盘眚& 定出光擴散層的凹凸面的凹凸的局部峰頂平均均間隔Sm及十點平均粗度Rz。A A :曰:、平間隔S為61.0 _，平_隔％為H局科頂平均粗度Rz為3.4 _。而且，以盘實施._ ’十點平均光擴散層中的光擴散材料的凝聚狀態。方式觀察 =。的任_上半徑為7。_的圓形= 4於30 _的二次粒子的個數為〇個長k大於散層的光學顯微鏡相片。闺12表示該光擴進而，以與實施例丨相同的方獲得種鏡片，使用該棱鏡片且以與形成層：作面光源裝置。於該面光源裝置中，以鱼"的方式製方式測定出法線亮度及半值角。苴处I、貝也例1相同的 /、…果為，法線亮度為 39 200815794 25645pif 2987 Cd/m2，半值角為 2〇 4。。進而，使用該面光源裝置，以與實製作液晶顯示裝置。於該液晶顯示裝置中1 ♦目同的方式 1相同的方式觀察眩目的情況時，發實施例象，僅能獲得無法入目的晝質。 q并吊強的眩目現比較例4 於以與比較例1相同的方式製作的面片上’載置透過型液晶面板。該液晶面板 t W鏑以與實施m相同的方式測定出的觀察、如下度光澤值GU22.3,入射面（防眩面）的： rd8，G1/G2的比為〇.75，觀察面的十點平均粗度GraphicsArray) 14J w (wide) LCD panel. The liquid crystal display device 34 200815794 25645pif is placed in the center of the light source device, and the glare is observed when the surface light source device is used, and the white image is displayed by the liquid crystal panel, and the smooth texture is conspicuous and glare-free. , a material having a very specific example 2 and having a weight average particle diameter of 3 to 35% and a refractive index of 149, and a material of the light diffusing material ==PMMA_microparticles of 20% by weight, obtained from the liquid In addition, it was adjusted to 55 峨8 in addition to the light transmittance, and the light diffusion layer was formed in addition to the obtained C type. Three political layers were determined, and the Wang Xianxian transmittance and haze were measured in the same manner as in the first embodiment. La mode test 93. Gong, the haze is 70.4%. And the day /,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 8, the flat interval s is 27.6 μπι, the average 'Z. The result is that the average peak value of the station and the peak is Rz A Sm* 53·9μηι, and the ten-point average rough 檐 will be H, μΠ1. Further, the state of aggregation of the light meter H ΐ diffusion material was observed in the same manner as in the first embodiment. As a result, in the circular region in which the light diffusion layer 2: is set to have a radius of 7 〇 _, the long diameter is larger than the number of the granules at most one. Fig. 9 shows an optical micrograph of the light-expanding layer. ^, and forming a ribbed layer in a manner that is transparent to the surface, only the money sheet is used, and the wafer is used in the same manner as in the embodiment to make the surface light source device 200815794 25645pif. In the surface light source device, the normal brightness and the half value angle are measured in each mode. Limei /, only know the same 3058 Cd / m2, the half-value angle is 19.4. . As a result, the normal brightness is further "the (four) surface light source device, and the liquid crystal display device is made of fish. In the same manner as in the case of the liquid crystal display, the glare g was observed in the same manner as in the first embodiment, and the second and second appearances were the eye-catching gentlemen having a very smooth texture with the embodiment. In the third embodiment, a transmissive liquid crystal panel was placed on the sheet in the same manner as in the first embodiment.光源1 ^ =睪(4) of the light source device is 9,9' incident surface (anti-glare glare == G2 is 3ΐ·3, G1/G2 ratio is 3], ^~ ^ 60 degrees first value is 〇 .〇2 μιη,嗲,夜曰面柘: The average thickness of the ten points of the festival is Rz 曰疋 The number of pixels is 1 (1 W... cage panel. In the liquid crystal display device, the (tail) liquid When the glare was observed, it was found that almost; = smooth texture of the striking enamel. & passed non-comparative example 1 as a light diffusing material, using a refractive index A diameter of 7.8 μηη PMMA cross-linking,,,, The total particle size is added to the coating liquid t(5)2Ϊ The cross-linking particle size of the ancestors is 1 mPa.S) so that it is 25 wt% relative to the light transmission, and 〗 η / 乂Coating at a line speed of 10 m/mm, except for 36 200815794 25645pif, in the same manner as in the example, the light diffusion layer obtained was expanded to define the total light transmittance and the fog m. 1, the same way to measure the 9th floor, the haze is 79.6%. Moreover, with,, ^4; Wang, the line transmittance is determined by the same way as the uneven surface of the light diffusion layer _ and the average thickness of 10 pointsThe interval S is 57.4 _, and the flattening result is that the average roughness Rz of the local turning top is 72% by value is (10)·1 lowering the condensed state of the widely dispersed material in the ten-point average. The result is that light two: i; The length of the circular area in the upper half of the 7() division is greater than: the number of secondary particles at 30 _ is at most $. Figure w is dry = optical micrograph of the light diffusion layer. In the same manner as in the first embodiment, the enamel-forming layer was formed, and the ruthenium was used in the same manner as in the first embodiment. In the surface light source device, the brightness was the same as in Example 14. Half (four). As a result, the normal brightness is 2621 Cd/m, and the half value angle is 22.2. Further, the rib surface and the device are the same as the embodiment 乍 liquid crystal display device. In the device, when the glare was observed in the same way as the actual one, it was found that there was a very strong glare, and only the enamel which could not be obtained was obtained. Brother Comparative Example 2 As a light diffusing material, a refractive index of 149 was used. Weight average particle 37 200815794 25645pif : PMMA crosslinked microparticles of 8.0 _ Add this bile to the coating solution The viscosity is 53 mPa.s), so that 2 = fat is ^%, and coating is performed so that the dissolution__average = other than this, the light diffusion layer is formed in the same manner as the embodiment. The total light transmittance and the haze are determined by the actual light transmittance. The result is that all: :, :::: The local sound of the unevenness of the uneven surface of the light diffusion layer is determined == two-way measurement interval Sm and ten-and-a-half The thickness is Rz. The basin is separated by S, the horizontal interval S is ~, the average interval is 2, and the degree Rz is 9·9 μπ. Further, the radius of the arbitrary position of the light surface is 7 G_ observed by the condensed state of the light diffusing material in the coarse diffusion layer of the fish. The number of secondary particles at 30 μm is at most (10). Figure = Da = Temple Optical micrograph of the diffusion layer. This is not the case. Further, the ruthenium sheet was obtained in the same manner as in Example 1, and the ruthenium sheet was used as the surface light source device. In the surface light source device, the brightness and the half value angle are measured in the same manner as the disk. The result was 2373 Cd/m2 and the half value angle was 22 4 〇. The wire-shell ratio is further used, and the liquid crystal display device is produced by using the surface light source device. When the glare was observed in the same manner as in the liquid crystal display device, it was found that there was a glare that was not sturdy with the circumstance. Moreover, since the total light transmittance = the brightness of the ^ line is lowered to 2373 _, only the non-comparative example 3 can be obtained. The light diffusion material is added to the coating liquid (viscosity is 41 mPa.s) to dry 15 ^ And coating is carried out to form a light-scattering layer in the same manner as the solvent. Other than this, with the embodiment! In the same manner as in the first embodiment, 95.5% was measured, and tt^= the result was that the total light transmittance was 7 «3.9 务. Further, the local peaks of the concavities and convexities of the uneven surface of the light-diffusing layer are determined to have an average interval Sm and a ten-point average roughness Rz. A A : 曰:, the flat interval S is 61.0 _, and the flat _ is %. The average thickness Rz is 3.4 _. Further, the state of aggregation of the light-diffusing material in the ten-point average light-diffusing layer was carried out by a disk. Way to observe =. The _ upper radius is 7. The circle of _ = 4 is the number of secondary particles of 30 _ is an optical micrograph of the length k greater than the dispersion.闺12 indicates the light expansion. Further, the lens is obtained in the same manner as in the embodiment, and the prism sheet is used and the layer is formed as a surface light source device. In the surface light source device, the normal brightness and the half value angle are measured in a fish system. In the case of I and B, the same as /, the result is that the normal brightness is 39 200815794 25645pif 2987 Cd/m2, and the half value angle is 2〇 4. . Further, the surface light source device was used to manufacture a liquid crystal display device. When the glare is observed in the same manner as in the liquid crystal display device, the image is exemplified, and only the enamel which is inaccessible can be obtained. q and the glare of the glare is present. Comparative Example 4 A transmissive liquid crystal panel was placed on the wafer prepared in the same manner as in Comparative Example 1. The liquid crystal panel t W 测定 was observed in the same manner as in the case of m, and the gloss value GU22.3 was as follows, and the ratio of the incident surface (anti-glare surface): rd8, G1/G2 was 〇.75, and the observation surface was Ten point average thickness

Rz 為 2·29 μπι，像素數 XGA 的 14.1 W Γ 命、★ 、見》)液晶面。於該液晶顯示裝置中，當以與實施例㈠目同的方式觀察眩目的情況時，觀察到與比較例i相比更強的眩現了獲得無法入目的晝質。 ^ 實施例4 作為構成光擴散層的透光性樹脂，使用折射率為L49 的丙稀酸樹脂（Mitsubishi Rayon公司製造，商口名TF 一 8 )，使TF— 8以濃度為20 wt%的方式溶解於mek (甲基乙基酮）與曱本的混合浴劑（混合比率各％ wt〇/。）中，製作黏度為60 mPa.S的塗佈液，除此以外，以與實施例1相同的方式形成光擴散層。 /'、 200815794 25645pif 定出全光^f _ 1 _的方式剛 95.6%，霧产急如4。/ Γ其釔果為，全光線透過率為射率相同，此可^非!!透光性樹脂與光擴散材料的折與實施例】_的^ I $的全鱗透過率。而且，以局部峰卿均np5Hk出光擴散層的凹凸面的凹凸的心士果A L 平均間隔^及十點平均粗度Rz。Rz is 2·29 μπι, pixel number XGA 14.1 W Γ life, ★, see 》) LCD surface. In the liquid crystal display device, when the glare was observed in the same manner as in the embodiment (I), it was observed that the glare was stronger than that of the comparative example i, and the enamel which was inaccessible was obtained. ^Example 4 As a light-transmitting resin constituting the light-diffusing layer, an acrylic resin having a refractive index of L49 (manufactured by Mitsubishi Rayon Co., Ltd., trade name TF-8) was used, and TF-8 was made to have a concentration of 20 wt%. The solution was dissolved in a mixed bath of mek (methyl ethyl ketone) and sputum (mixing ratio % wt 〇 /.), and a coating liquid having a viscosity of 60 mPa·s was prepared, and the examples were the same as in the examples. 1 A light diffusion layer is formed in the same manner. /', 200815794 25645pif The method of setting the total light ^f _ 1 _ is just 95.6%, and the fog is as fast as 4. / Γ 钇 , , 全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全全Further, the local peaks are np5Hk, and the average interval of the azimuth A L and the ten-point average roughness Rz of the unevenness of the uneven surface of the light-diffusing layer.

為53^陶/峰頂平均間隔S為43.5阿，平均間隔Sm 例1相度仏為3.9师。而且，以與實施態。其結散層中的光擴散㈣的凝聚狀的圓形區域;長== 的任意位置上半徑為70 _ 為！個。 =A於4於3G μπι的二絲子_數最多進而與以兵實施例1相同的方式形成稜鏡列形成層，二，使用該稜鏡片且以與實施例1相同的方式製方^，裝置。於該面光源裝置中，卩與實施例1相同的 °其結果為’法線亮度為 2772 Cd/m，半值角為218。。制進而’使用該面光源裝置，以與實施例i相同的方式衣作液晶顯示裝置。於該液晶顯示裝置中，當以與實施例同的方式觀察眩目的情況時，發現幾乎無眩目現象，獲得具有非常流暢的質感的醒目晝質。以下表1表示上述各實施例及比較例的結果。 41 200815794The average interval S of the 53^ pottery/peak is 43.5 Å, and the average interval Sm is 1 3.9. Moreover, with the implementation state. The condensed circular region of the light diffusion (4) in the junction layer; the radius at any position of length == is 70 _ for! One. =A is a maximum of two filaments of 4 to 3 G μπι, and further, a matrix formation layer is formed in the same manner as in the embodiment 1, and the pellet is used in the same manner as in the first embodiment. Device. In the surface light source device, 卩 was the same as that of Example 1, and as a result, the normal brightness was 2772 Cd/m, and the half value angle was 218. . Further, the surface light source device was used as a liquid crystal display device in the same manner as in the example i. In the liquid crystal display device, when the glare was observed in the same manner as in the example, it was found that there was almost no glare, and a conspicuous enamel having a very smooth texture was obtained. Table 1 below shows the results of the above respective examples and comparative examples. 41 200815794

比較例4 丨比較例3 1比較例2 1 比較例ι 1 I實施例4 | |實施例3 1 1實施例2 1 實施例1 與比較例1相同 l·同上1 |_同上ι PEs 丙.烯酸與實施例1相同同上 PEs 黏合樹脂 U) k> 00 b bo U) k) 3.2 (70%) ' 5.3 (30%) U) •to 薛 ι—I 1 光擴散材料 j—* Lh K) 19.7 合計20 19.7 95.5 85.5 94.4 95.6 93.3 92.6 呈 Η 73.9 73.4 79.6 80.4 1 70.4 I 1 64.7 I 2 X Ν 61.0 ! 41.5 I 1 5_m—————I 43.5 27.6 27.0 [μηι] (/> 149.1 ON U) 102.1 53.3 53.9 38.3 Μ GO 3 LO VO Lk) ,^o to bo [m] \ Ν ο Lh Ϊ—^ ί—ι ι子個數ι 二次粒 2987 2373 2621 2772 ! 3058 3160 1亮度法線 20.4 22.4 22.2 21.8 1 19.4 1 18.7」 U-^l 半值角 X X X X 〇〇〇〇 1現象| 炫目知一 25645pif 200815794 25645pif 【圖式簡單說明】圖1是表示作為本發明片、使用該稜鏡片的本發明實施形態的稜鸯及使用該面光源裝置晶顯示置，實施形態、示意圖。衣置的一貫施形態的斜親圖2是圖1的局部剖面示意圖。Comparative Example 4 丨 Comparative Example 3 1 Comparative Example 2 1 Comparative Example ι 1 I Example 4 | | Example 3 1 1 Example 2 1 Example 1 Same as Comparative Example 1 l Same as above 1 | _ Same as ι PEs C. The enoic acid is the same as in Example 1 as above PEs binder resin U) k> 00 b bo U) k) 3.2 (70%) ' 5.3 (30%) U) • to 薛ι—I 1 light diffusing material j—* Lh K 19.7 Total 20 19.7 95.5 85.5 94.4 95.6 93.3 92.6 Presentation 3.9 73.9 73.4 79.6 80.4 1 70.4 I 1 64.7 I 2 X Ν 61.0 ! 41.5 I 1 5_m————— I 43.5 27.6 27.0 [μηι] (/> 149.1 ON U) 102.1 53.3 53.9 38.3 Μ GO 3 LO VO Lk) , ^o to bo [m] \ Ν ο Lh Ϊ—^ ί—ι ι 子 ι Secondary 2987 2373 2621 2772 ! 3058 3160 1 Brightness Normal 20.4 22.4 22.2 21.8 1 19.4 1 18.7" U-^l Half-value angle XXXX 〇〇〇〇1 phenomenon | 炫目知一25645pif 200815794 25645pif [Simplified illustration of the drawings] Figure 1 shows the film used as the invention, using the cymbal The prism of the embodiment of the present invention and the crystal display device using the surface light source device are shown in an embodiment and a schematic view. An oblique view of the consistent configuration of the garment. Figure 2 is a partial cross-sectional view of Figure 1.

。，鏡片及導光體的局部放。圖4是表示二次粒子的平面示意圖。圖5是用以說明稜鏡片的製造方法的示意圖。圖6是表示用於製造稜鏡片的輥模的斜視示意圖。圖7是表示用於製造稜鏡片的輥模的分解斜視示音圖8是光擴散層的光學顯微鏡相片。圖9是光擴散層的光學顯微鏡相片。圖是光擴散層的光學顯微鏡相片。圖U是光擴散層的光學顯微鏡相片。圖12是光擴散層的光學顯微鏡相片。【主要元件符號說明】 1 :—次光源 2:光源反射器 3 :導光體 4 :稜鏡片 5:光反射元件 7 :模構件（輥模） 43 200815794 25645pif 8 ·液晶面板 9、43 :透光性基材 10 :活性能量線硬化性組成物 11 :壓力機構 12 :樹脂槽 13 :喷嘴 14 :活性能量線照射裝置 15 :薄板狀模構件 16 :圓筒狀輥 18:形狀轉印面 28 :夾輥 31 :光入射端面 32:侧端面 33:光出射面 34 ··背面 41 :入光面 42 :出光面 44 :稜鏡列形成層 45 :光擴散層 81 :入射面 82:觀察面 411 :稜鏡列 411a、411b :稜鏡面 45Γ:透光性樹脂 44 200815794 25645pif 452 :光擴散材料 453 :二次粒子. , the lens and the partial placement of the light guide. Fig. 4 is a schematic plan view showing secondary particles. Fig. 5 is a schematic view for explaining a method of manufacturing a cymbal sheet. Fig. 6 is a perspective view showing a roll mold for manufacturing a cymbal sheet. Fig. 7 is an exploded perspective view showing a roll mold for manufacturing a cymbal sheet Fig. 8 is an optical microscope photograph of a light diffusion layer. Figure 9 is an optical micrograph of a light diffusing layer. The figure is an optical micrograph of a light diffusing layer. Figure U is an optical micrograph of a light diffusing layer. Figure 12 is an optical micrograph of a light diffusing layer. [Description of main component symbols] 1 : - Secondary light source 2 : Light source reflector 3 : Light guide 4 : Sepal 5 : Light reflective element 7 : Mold member (roller mold ) 43 200815794 25645pif 8 · Liquid crystal panel 9, 43 : Photosensitive substrate 10: Active energy ray-curable composition 11: Pressure mechanism 12: Resin tank 13: Nozzle 14: Active energy ray irradiation device 15: Thin plate-shaped mold member 16: Cylindrical roller 18: Shape transfer surface 28: Pinch roller 31: light incident end face 32: side end face 33: light exit face 34 · · back face 41 : light incident face 42 : light exit face 44 : tantalum formation layer 45 : light diffusion layer 81 : incident face 82 : observation face 411 : 稜鏡 411a, 411b : 稜鏡 45 Γ: Translucent resin 44 200815794 25645pif 452 : Light diffusing material 453 : Secondary particles

Claims

200815794 25645pif 十、申請專利範圍： 1·-種透鏡片，其於具有第丨面及第2面的片狀透光性構件的上述第1面上並列形成有多個透鏡列，上述第2 面為凹凸面，此凹凸面的局部峰頂平均間隔s為小於等於 50 μπι且十點平均粗度Rz為小於等於* _。、 2·如申請專利範圍第1項所述之透鏡片，其中上述片狀透光性構件是藉由在透紐基材的—個面讀置光擴散層而構成，該光擴散層是藉由使透光性樹脂中含有透光性光擴散材料而形成，上述凹凸岭藉由使上述光擴散材料自上述透光性樹脂的表面突出而形成。 3·如申請專利範圍第2項所述之透鏡片，其中上述光擴散層的霧度Hz為5〇〜85%。 4.如申請專利範圍第2項所述之透鏡片，其中上述光擴散材料的重量平均粒子徑D1為^隅。、，5·如申請專利範圍帛2項所述之透鏡片，其中於上述光擴政層的任思位置的半控為哗的圓形區域内，上述 f光性樹脂巾由多個上述光錄㈣凝料賴長徑大於等於30 μπι的一次粒子的個數為小於等於3個。，6•如申晴專利範圍第2項所述之透鏡片，其中上述透光性树的折射率N1與±述光擴散材料賴料ν2之差為 0.03〜0.1〇。 7. —種面光源裝置，其包括：一次光源；導光脰’其當上述一次光源發出的光導入後，對該光 46 200815794 25645pif 進行引導’並使該光射出；以及申請專利範圍第1項所述之读拉光體的出射光射人其上的方式而配2，ϋ使來自上述導200815794 25645pif X. Patent Application Range: A lens sheet in which a plurality of lens rows are formed in parallel on the first surface of a sheet-like light transmissive member having a second surface and a second surface, and the second surface For the concave-convex surface, the local peak-to-average interval s of the concave-convex surface is 50 μm or less and the ten-point average roughness Rz is less than or equal to * _. The lens sheet according to claim 1, wherein the sheet-like light transmissive member is formed by reading a light diffusion layer on a surface of the through substrate, the light diffusion layer is borrowed The light-transmitting resin is formed by containing a light-transmitting light-diffusing material, and the unevenness is formed by projecting the light-diffusing material from the surface of the light-transmitting resin. The lens sheet according to claim 2, wherein the light diffusion layer has a haze Hz of 5 〇 85%. 4. The lens sheet according to claim 2, wherein the light-diffusing material has a weight average particle diameter D1 of 隅. 5. The lens sheet according to claim 2, wherein the f-light resin towel is made up of a plurality of the lights in a circular area in which the half-control position of the light-expanding layer is a circle Record (4) The number of primary particles with a long diameter of 30 μm or more is less than or equal to three. The lens sheet according to the second aspect of the invention, wherein the difference between the refractive index N1 of the light-transmitting tree and the light-diffusing material ν2 is 0.03 to 0.1 〇. 7. A surface light source device comprising: a primary light source; a light guide 脰 'which guides the light 46 200815794 25645pif after the light from the primary light source is introduced and emits the light; and the patent application number 1 The method in which the light emitted by the reading light beam is incident on the person, and is coordinated with

#入=光體具備使自上述—次光源發出的光所射入的 t入㈣面、及使經引導的光所射出的光出射面，上述_ =先源鄰接配置於上述導絲的光人射端面，上述透 =使上述第〗面對向赴述導光體的光出射面的方式而種液晶顯示裝置，其包括申請專利翻第7項所述之面光源裝置以及液晶面板，該液晶面板是以使自上述面光源裝置的上述透鏡片的第2面射出的光射人其上的式而配置，該液晶面板具備使自上述透鏡片的第2面射出的光射入的入射面、及其相反側的觀察面。、9·如申請專利範圍第8項所述之液晶顯示裝置，其中上述觀祭面設為防眩面，6〇度光澤值⑴為大於等於乃。、10·如申請專利範圍第8項所述之液晶顯示裝置，其中上述觀祭面設為眩光面，6〇度光澤值G1為大於等於9〇。 11·如申請專利範圍第8項所述之液晶顯示裝置，其中上述入射面設為防眩面，上述觀察面的60度光澤值G1與上述入射面的60度光澤值G2.的比率G1/G2為大於等於^ 12·如申明專利範圍第$項所述之液晶顯示裝置，其中上述觀察面的十點平均粗度Rz為小於等於2 μιη。 13·如申請專利範圍第8項所述之液晶顯示裝置，其中 47 200815794 25645pif 更包括光擴散片，該光擴散片是以使自上述透鏡片的第2 面射出的光射入其上的方式而配置在上述透鏡片與上述液晶面板之間，該光擴散片的至少一個面為凹凸形狀面，該凹凸形狀面的局部峰頂平均間隔S為小於等於50 μιη且十點平均粗度Rz為小於等於4 μπι。 48#入=Light body includes a t-in (four) plane into which light emitted from the sub-light source is incident, and a light-emitting surface from which the guided light is emitted, wherein the _ = source is adjacent to the light arranged on the guide wire The liquid crystal display device is a liquid crystal display device, and the surface light source device and the liquid crystal panel according to claim 7 are applied to the light-emitting surface of the light guide body. The liquid crystal panel is disposed such that light emitted from the second surface of the lens sheet of the surface light source device is incident on the liquid crystal panel, and the liquid crystal panel includes incident light that is incident from the second surface of the lens sheet. The observation surface of the face and its opposite side. The liquid crystal display device according to claim 8, wherein the viewing surface is an anti-glare surface, and the 6-degree gloss value (1) is greater than or equal to. The liquid crystal display device according to claim 8, wherein the viewing surface is set to be a glare surface, and the 6-degree gloss value G1 is 9 大于 or more. The liquid crystal display device according to claim 8, wherein the incident surface is an anti-glare surface, and a ratio G1/ of a 60-degree gloss value G1 of the observation surface to a 60-degree gloss value G2 of the incident surface. G2 is a liquid crystal display device according to claim 1, wherein the ten-point average roughness Rz of the observation surface is 2 μm or less. The liquid crystal display device according to claim 8, wherein the reference numeral 2008 200879424 25645pif further includes a light diffusing sheet which is a method of causing light emitted from the second surface of the lens sheet to be incident thereon. And disposed between the lens sheet and the liquid crystal panel, at least one surface of the light diffusion sheet is a concave-convex shape surface, and an average peak-to-peak interval S of the uneven surface is 50 μm or less and a ten-point average roughness Rz is Less than or equal to 4 μπι. 48