1320864 六、發明說明： 【發明所屬之技術領域】 本發明關於一種液晶面板及在液晶面板的背後配置有 背光源之液晶顯示裝置。 【先前技術】 由於液晶顯示裝置的液晶面板本身不發光，所以為了 使畫面明亮，一般是配備照射燈光的背光源。 作為大畫面的液晶顯示裝置用的背光源，多採用容易 應對大晝面化的正下方型《正下方型的背光源在一面具有 擴散板之中空罩殼的内部設置螢光燈而構成。線性光源即 螢光燈的光由擴散板被擴散，形成輝度大致均勻的面狀光 並照射到液晶面板上。例如在專利文獻1中就說明有這種 液晶顯示裝置。 為了從線狀光源的光得到不均勻性少的發光面，背光 源的擴散板起到了光的擴散這一重要的作用。習知的液晶 面板是以使來自背光源之均勻的光照射到整個晝面上作為 别^的’所以當照射有不均勻的光’例如殘留了燈影（lamp image)的光時，會在液晶面板的畫面上產生輝度差，使晝 面品位受損。 所以’作為背光源，要求具有良好的發光品位，以在 整個發光面上形成均勻的光。 為了使背光源保持高品位，在背光源製造時，需要檢 測發光面上是否存在因異物造成的暗部和異常發光。特別 疋正下方型背光源，在擴散板的背後有用於放置光源的空 4[Technical Field] The present invention relates to a liquid crystal panel and a liquid crystal display device in which a backlight is disposed behind the liquid crystal panel. [Prior Art] Since the liquid crystal panel of the liquid crystal display device itself does not emit light, in order to make the screen bright, it is generally provided with a backlight that illuminates the light. As a backlight for a large-screen liquid crystal display device, a direct-back type "backlight type backlight" which is easy to cope with a large-sized surface is provided with a fluorescent lamp inside a hollow cover having a diffusion plate. The light of the linear light source, i.e., the fluorescent lamp, is diffused by the diffusing plate to form a planar light having substantially uniform luminance and is irradiated onto the liquid crystal panel. Such a liquid crystal display device is described in, for example, Patent Document 1. In order to obtain a light-emitting surface having less unevenness from the light of the linear light source, the diffusing plate of the backlight plays an important role in diffusing light. A conventional liquid crystal panel is such that when uniform light from a backlight is irradiated onto the entire surface of the crucible, so that when uneven light is irradiated, for example, light having a lamp image remains, the liquid crystal is present in the liquid crystal. A difference in luminance is produced on the panel of the panel, which deteriorates the quality of the noodles. Therefore, as a backlight, it is required to have a good illuminating grade to form uniform light over the entire illuminating surface. In order to maintain the backlight at a high level, it is necessary to detect whether there is a dark portion due to foreign matter and abnormal light emission on the light-emitting surface when the backlight is manufactured. In particular, the bottom type backlight is used, and there is an empty space for placing the light source behind the diffuser. 4
liimM 間’ f易因該空間中侵人異物而使發光品位受損。如前述 那種^光源的檢查’使背光源的製造成本上升，進而使液 晶顯示裝置的成本提高。 而且’則述擴散板為了確保光擴散性而具有一定程度 =厚=重量’妨礙了背光賴輕量化。另外，擴散板為 合成樹脂制’所以容易因熱和吸水而產生㈣，有時會因 長期使用而劣化。 〔專利文獻1 ] 曰本專利早期公開之2003 — 43481號公報 【發明内容】 .本發明的目的是提供一種即使從背光源照射出不均勻 的光’也能得到良好的畫面品位之液晶面板及液晶顯示裝 置。 而且’本發明的另一目的是構成的簡潔化。 本發明為一種從背後照射背光源的光之液晶面板，配 備具有被失持在相對的基板間的液晶並可形成晝面之液晶 面板主體’其特徵在於：前述液晶面板主體具有使透過該 液晶面板主體的光進行擴散之擴散層。即使從背光源照射 出不均勻的光，由於液晶面板自身因擴散層而具有光擴散 性，所以可利用光的擴散作用使光均勻化，提高畫面品位。 作為從背光源照射的不均勻光的例子，有當背光源利 用擴散板形成面狀光源時，因發光面上的暗部和異常發光 而產生的不均勻光，當將背光源的點狀光源或線狀光源的 光在殘留有該光源形狀的狀態下照到液晶面板上時，殘留 有該光源形狀的燈影（lamp image)之不均勻光等。 本發明的特徵在於：前述擴散層使相對之基板的至少 -任一方具有光擴散性。由於液晶面板基板具有光擴散性， 所以可不增加構成液晶面板的構件點數，防止成本增加。 另外，基板既可為玻璃基板，也可為塑膠基板。而且，相 對的基板不只可夾入液晶，也可為彩色濾光膜等。 本發明之液晶面板特徵在於：前述背光源侧的基板具 有光擴散性。即使從背光源照射不均勻的光，也可由液晶 前面之背光源側的光擴散性基板而使光均勻化，提高畫面 品位。 本發明的特徵在於：前述具有擴散性的基板在液晶侧 的内面不施行光擴散處理，而在外面施行光擴散性處理。 .當在液晶侧的面上施行光擴散（例如磁珠（b e ad )(擴 散磁珠（bead))等擴散劑的塗佈或利用喷砂法、餘刻法等 的微細凹凸加工）時，有可能會妨礙液晶分子的排列。而 ^，雖然擴散作用（燈影（lamp image)的改善）也利用 虽光通過與具有擴散性的面（層）折射率不同的層時之光 的折射，但基板與液晶的折射率的差，小於基板和空氣的 折射率的差，所以即使使液晶側的内面具有擴散性，也難 以得到擴散效果。 對此，藉由在基板的液晶側的内面不施行光擴散處 理，而在外面施行光擴散處理，能夠不妨礙液晶分子的排 列’並得到有效的擴散效果。 本發明的特徵在於：前述擴散層是在液晶面板主體上 ^鑛散娜成的。如為擴散獅塗佈，則不會導致重量 型化’且可簡單地構成擴散層之擴散劑的塗佈， Γ面==面板主體㈣光源—觸表面或其相反一側的 體上雜纽：歧舰層為絲錢晶面板主· 致重膜。如為擴散薄膜，則非常薄，所以不會導 的厚H 化，且可簡單地構成擴散層。擴散薄膜 散薄膜的厚度在以下更佳。而且，擴 Πί源r輝度降低，或在液晶面板== 人採用像透畫面明竞。作為背光源的輝度上升層，適 先薄膜這樣的’具有藉由設置可使 ㈣2 f的特徵在於.在前述液晶面板主體的前述背光 與前述液晶面板主體結合的薄膜保持構 光源膜保持構件對在前述液晶面板主體的前述背 Ϊ膜Ϊ 學薄膜’有擴散薄膜、透鏡薄膜、偏光 =，專膜的厚度在lmm以下為佳，在〇 —以 為=。:且’擴散薄膜的厚度在划5醜以上為佳。 另·卜，备使光學薄膜利用保持構件進行保持，而不固 1320864 定地貼在液晶面板主體上時，可回避因光學薄膜的熱收縮 而造成的剝離和撓曲等，且使液晶面板具有光學薄膜。 本發明的特徵在於：前述薄膜保持構件是一種使片周 .圍邊緣部被黏貼在前述液晶面板主體的前述背光源侧的周 圍邊緣部，而前述片周圍邊緣部的内側區域對液晶面板為 非黏貼之組裝片（Package sheet)，且前述光學薄膜被收納 在前述組裝片（package Sheet)和前述液晶面板主體之間。 藉由使用組裝片（package sheet)，無論有多少張光學薄膜 都能簡單地進行安裝。而且，由於光學薄膜不是直接安裝 在液晶面板主體上，所以能夠回避光學薄膜的熱收縮和撓 曲之問題。 另外’組裝片（package sheet)也可具有作為擴散薄 膜等光學薄膜的機能。 、本發明的特徵在於：前述薄膜保持構件是一種與前述 光學薄膜的周圍邊緣部扣合，並設於應保持前述光學薄膜 的該液晶面板主體的周圍邊緣部之扣合部。當藉由扣合光 學薄膜而進行保持時，由於光學薄膜不是直接安裝在液晶 面板主體上，所以能夠回避光學薄膜的熱收縮和撓曲之問 題。 本發明之液晶顯示裝置的特徵在於：在前述液晶面板 的背後配備了不具有用於擴散光源的光之擴散板的背光 源。由於前述液晶面板容許背光源的發光品位差，所以能 夠構成廉價的液晶顯示裝置。 如利用本發明，即使從背光源照射不均勻的光，也可得到 8 1320864 良好的畫面品位。 【實施方式】 下面，根據圖示對本發明的較佳實施形態進行說明。 r所齡裝置卜作為基本構成，包括液晶面 板2、向液日日面板2照射光的背光源B。 丄背，源B是-種在燈箱3内配置有複數個由冷陰極營 二(線性光源）構成的光源4而構成，且從液晶面板2 的月後照射光源4的光之正下方型背光源。該正下方型背 ^源^有作為通常的正下方型背光源之基本構成的擴散 板’使光源4的光不經過擴散板照射·晶面板2上。因 =^液晶面板2上所騎料是網的面料，而是線 性光源4的殘留有燈影（lamp image)的光。 ，箱3從矩形狀的底面3a的四邊直立設置有側面孙 ^形成上面開口狀。在侧面％的上部，形成有用於支援液 :面板2的支援部3e，且以閉塞燈箱3的上面開口之形 =使液晶面板2載置於支援部3e上。另外，燈箱3的底 a被作為用於使光源4的光向液晶面板2侧進行反射的 =面。作為反射面，不採職面反射面，而採取將光向 f個方向進行擴散的擴散反射面為佳。擴散反射面可藉由 白色塗佈和白色薄膜的鋪設等而構成。 曰 ，液晶顯示裝置1與燈箱3 一起將液晶面板2夾在中 /，並具有用於固定·保持液晶面板2的上殼5。藉由上殼 赵和作為下殼之燈箱3的組合而構成液晶顯示裝置1的 另外上设5呈鏡框狀以使液晶面板2的晝面露出。 9 ^320864 在本實施形態中，當從燈箱3上取下液晶面板2時， 即露出光源4，所以光源4的交換容易。在習知的液晶顯 '示裝置1中，由於背光源自身具有擴散板，所以如果取下 .液晶面板，而不再取下擴散板，就不能交換光源4，但是 在本實施形態t，光源4的交換容易，提高了可維護性。 一而且，在本實施形態中，不具有擴散板，可謀求液晶 顯示裝置的輕量化·薄型化.低成本。另外，在正下方型背 光源中，由於燈箱内部是中空的，所以會形成因擴散板的 撓曲而造成之發光不均勻的問題，但是在本實施形態中， 由於背光源B不具有擴散板，所以不會產生因擴散板的 曲造成的問題。 另外，在本實施形態中，由於來自光源4的光直接照 射在液晶面板2上，所以不要求背光源B具有發光品位^ 好的發光面。因此，作為背光源B可採用不是高品位的了 可不需要進行發光品位的檢查，或只需簡易的檢查即可。 結果能夠廉價地製造背光源B，且使液晶顯示裝置也變 廉價。 于 如圖2所示，在液晶面板2中，以相對的2片基板 璃基板或塑膠基板）7、8將液晶6夾在中間。在基板？破 的液晶6側的内φ 7a、8a上，形成有液晶驅動用^極、8 示省略）。另外，在圖2中，在作為液晶的層進行表亍的= 圍6中，除了液晶以外，還配備有彩色滤光膜和襯塾。 在2片基板7、8的外面7b、8b側配置有偏夯缸 10以將基板7、8夾在中間，並利料些偏光板9、=對 10 來自背光源的光的通過.不通過進行控制，形成畫面。 f以下的說明中，將液晶6、基板7,8、偏光板9，1〇 等，這些作為用於形成液晶晝面的液晶面板2之必須的構 成要素所構成的部分，稱為液晶面板主體。 在夾持液晶6之相對的2片基板7、8中，背光源侧的， 基板7 (以下稱作〔第丨基板7〕）作為具有光擴散性的板 而形成。具有光擴散性的板7可像例如圖3那樣，藉由在 透明板（透明玻璃基板）70的表面塗佈磁珠（bead)等擴 散劑71而形成擴散層得到。利用擴散劑71形成之擴散層 的厚度的上限，以80ym為佳，4〇vm為更佳。而且，^ 用擴散劑71形成之擴散層的厚度的下限，以5//m為佳， 20/zm為更佳。因擴散層薄，即使使液晶面板具有擴散性， 也能回避液晶面板的重量增大、大型化。 ’ 另外，另一基板8 (以下稱為〔第2基板8〕）為透明 板（玻璃基板）。 因第1基板7具有擴散性，所以液晶面板主體成為帶 有光擴散機能的液晶面板2。來自背光源b的光，在該第 1基板7 (的擴散層）被擴散’使燈影（lamp image)得至ij 改善。即’由於即使從背光源B照射的光的品位低，也可 由液晶面板自身而被改善，所以背可燈B的發光品位可為 低水平。 而且，因為是在較液晶面板主體的液晶靠近背光源B 一侧設置擴散層並進斤光擴散’所以能夠良好地保持查面 品位。即，在本實施形態中’與背光源B側的第1基板7 11 1320864 具有擴散性相對，第2基板8為透明板，實質上不具有擴 散性，所以可防止液晶晝面模糊。這樣，對液晶晝面的影 響被極力抑制，且可謀求燈影（lamp image)的改善。另 •外’在對液晶晝面的影響不特別成為問題的情況下’也可 使第2基板8也具有光擴散性，而謀求燈影（lampimage) 的進一步改善。 為了利用薄擴散層有效地緩和燈影（lamp image)，所 以擴散層的全光線透過率低，且全反線反射率高為佳。藉 由提高反射率，可使來自背光源B的光，其丨次不通過液 晶面板主體2而向背光源b側反射的光增多，並利用燈箱 3内面進行再次反射從而再次射向液晶面板主體2。當光的 反射认數增多時，光谷易均勻化，並使燈影（lamp image) 緩和。 擴散層的全光線透過率（測試法；JIS ( JapaneseThe liimM is easy to damage the illuminating grade due to invading foreign objects in the space. The inspection of the light source as described above increases the manufacturing cost of the backlight, thereby increasing the cost of the liquid crystal display device. Further, the diffusion plate has a certain degree of thickness = weight = in order to ensure light diffusibility, which hinders the weight reduction of the backlight. Further, since the diffusing plate is made of synthetic resin, it is likely to be generated by heat and water absorption (4), and may be deteriorated due to long-term use. [Patent Document 1] Japanese Patent Laid-Open Publication No. 2003-43481 (Draft of the Invention) An object of the present invention is to provide a liquid crystal panel which can obtain a good picture quality even if uneven light is emitted from a backlight. Liquid crystal display device. Further, another object of the present invention is the simplification of the constitution. The present invention is a liquid crystal panel that illuminates a backlight from behind, and is provided with a liquid crystal panel body having a liquid crystal that is lost between opposing substrates and can form a facet. The liquid crystal panel body has a liquid crystal panel. The diffused layer of light diffused by the panel body. Even if uneven light is emitted from the backlight, the liquid crystal panel itself has light diffusibility due to the diffusion layer, so that the light can be made uniform by the diffusion of light, and the screen quality can be improved. As an example of uneven light irradiated from a backlight, when a backlight is used to form a planar light source by a diffusion plate, uneven light generated by a dark portion on the light-emitting surface and abnormal light emission is used as a point light source of the backlight or When the light of the linear light source is incident on the liquid crystal panel in a state in which the shape of the light source remains, uneven light of a lamp image of the light source shape remains. The present invention is characterized in that the diffusion layer has at least one of the opposite substrates having light diffusibility. Since the liquid crystal panel substrate has light diffusibility, it is possible to prevent an increase in cost without increasing the number of components constituting the liquid crystal panel. Further, the substrate may be either a glass substrate or a plastic substrate. Further, the opposite substrate may be not only a liquid crystal but also a color filter film or the like. The liquid crystal panel of the present invention is characterized in that the substrate on the backlight side has light diffusibility. Even if uneven light is irradiated from the backlight, the light diffusing substrate on the backlight side in front of the liquid crystal can be made uniform, and the screen quality can be improved. The present invention is characterized in that the diffusible substrate is subjected to light diffusion treatment on the inner surface of the liquid crystal side without performing light diffusion treatment. When light diffusion (for example, application of a diffusing agent such as a bead (a diffusion bead) or a fine concavo-convex processing such as a sandblasting method or a residual method) is performed on the surface of the liquid crystal side, It may hinder the alignment of liquid crystal molecules. And ^, although the diffusion effect (improvement of the lamp image) also utilizes the refraction of light when the light passes through a layer having a refractive index different from that of the diffusible surface (layer), but the difference in refractive index between the substrate and the liquid crystal, Since the difference in refractive index between the substrate and the air is smaller, even if the inner surface of the liquid crystal side has diffusibility, it is difficult to obtain a diffusion effect. On the other hand, by performing light diffusion treatment on the inner surface of the liquid crystal side of the substrate without performing light diffusion treatment, it is possible to obtain an effective diffusion effect without hindering the arrangement of liquid crystal molecules. The present invention is characterized in that the diffusion layer is formed on the main body of the liquid crystal panel. If it is coated with a diffused lion, it will not lead to weighting' and can simply form the diffusion layer of the diffusion agent, the surface == panel body (four) light source - the touch surface or the opposite side of the body : The disembarkation layer is the main film of the silk crystal panel. If it is a diffusion film, it is very thin, so it does not have a thick thickness, and the diffusion layer can be simply formed. The thickness of the diffusing film is preferably as follows. Moreover, the expansion of the source r is reduced, or in the LCD panel == people use the picture to see through the picture. A luminance rising layer as a backlight, a film having a suitable film, such as (4) 2 f, is characterized in that a film holding light source film holding member is bonded to the liquid crystal panel main body of the liquid crystal panel main body. The back film Ϊ film of the liquid crystal panel main body has a diffusion film, a lens film, and a polarizing film. The thickness of the film is preferably 1 mm or less, and is preferably =. The thickness of the diffusing film is preferably 5 or more. In addition, when the optical film is held by the holding member, it is possible to avoid peeling and deflection due to heat shrinkage of the optical film, and the liquid crystal panel is provided when the liquid crystal panel body is fixedly attached to the liquid crystal panel body. Optical film. According to another aspect of the invention, the film holding member is formed such that a peripheral edge portion of the liquid crystal panel main body is adhered to a peripheral edge portion of the liquid crystal panel main body, and an inner side portion of the peripheral edge portion of the sheet is opposite to the liquid crystal panel. A package sheet to be adhered, and the optical film is housed between the assembly sheet and the liquid crystal panel body. By using a package sheet, no matter how many optical films are installed, they can be easily mounted. Moreover, since the optical film is not directly mounted on the liquid crystal panel body, the problem of heat shrinkage and deflection of the optical film can be avoided. Further, the 'package sheet' may have a function as an optical film such as a diffusion film. According to another aspect of the invention, the film holding member is a fastening portion that is engaged with a peripheral edge portion of the optical film and that is provided on a peripheral edge portion of the liquid crystal panel main body to which the optical film is to be held. When the optical film is held by the optical film, since the optical film is not directly attached to the liquid crystal panel body, the problem of heat shrinkage and deflection of the optical film can be avoided. The liquid crystal display device of the present invention is characterized in that a backlight having no diffusion plate for diffusing light from the light source is provided behind the liquid crystal panel. Since the liquid crystal panel allows the difference in the illuminance of the backlight, it is possible to constitute an inexpensive liquid crystal display device. According to the present invention, even if uneven light is irradiated from the backlight, a good picture quality of 8 1320864 can be obtained. [Embodiment] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The r-age device is a basic configuration, and includes a liquid crystal panel 2, and a backlight B that illuminates the liquid solar panel 2 with light. In the back, the source B is a light source 4 in which a plurality of light sources 4 composed of a cold cathode battalion (linear light source) are disposed in the light box 3, and the light is directly irradiated from the light source 4 after the moonlight of the liquid crystal panel 2 source. The direct-back type rear surface has a diffusion plate as a basic structure of a normal direct-type backlight, and the light of the light source 4 is irradiated onto the crystal panel 2 without passing through the diffusion plate. Since the riding material on the liquid crystal panel 2 is the fabric of the net, the light of the linear light source 4 is left with a lamp image. The box 3 is provided with a side surface that is erected from the four sides of the rectangular bottom surface 3a to form an upper opening. In the upper portion of the side surface, a support portion 3e for supporting the liquid panel 2 is formed, and the upper surface of the light box 3 is closed. The liquid crystal panel 2 is placed on the support portion 3e. Further, the bottom a of the light box 3 is used as a = surface for reflecting the light of the light source 4 toward the liquid crystal panel 2 side. As the reflecting surface, it is preferable to use a diffuse reflecting surface that diffuses light in f directions without taking a face reflecting surface. The diffuse reflection surface can be formed by white coating, laying of a white film, or the like.液晶 The liquid crystal display device 1 sandwiches the liquid crystal panel 2 together with the light box 3, and has an upper case 5 for fixing and holding the liquid crystal panel 2. The liquid crystal display device 1 is formed by a combination of the upper case ZH and the light box 3 as the lower case, and the upper surface 5 is formed in a frame shape to expose the surface of the liquid crystal panel 2. 9 ^320864 In the present embodiment, when the liquid crystal panel 2 is removed from the light box 3, the light source 4 is exposed, so that the exchange of the light source 4 is easy. In the conventional liquid crystal display device 1, since the backlight itself has a diffusing plate, if the liquid crystal panel is removed and the diffusing plate is not removed, the light source 4 cannot be exchanged, but in the present embodiment t, the light source The exchange of 4 is easy and improves maintainability. Further, in the present embodiment, the diffusing plate is not provided, and the liquid crystal display device can be reduced in weight and thickness, and at low cost. Further, in the direct type backlight, since the inside of the light box is hollow, there is a problem that the light emission is uneven due to the deflection of the diffusion plate. However, in the present embodiment, the backlight B does not have the diffusion plate. Therefore, there is no problem caused by the curvature of the diffusion plate. Further, in the present embodiment, since the light from the light source 4 is directly incident on the liquid crystal panel 2, the backlight B is not required to have a light-emitting surface having a good illuminating quality. Therefore, as the backlight B, it is possible to use an inspection that is not of a high grade, and it is not necessary to perform inspection of the illuminating grade, or a simple inspection is required. As a result, the backlight B can be manufactured inexpensively, and the liquid crystal display device can also be made inexpensive. As shown in Fig. 2, in the liquid crystal panel 2, the liquid crystal 6 is sandwiched by two opposing substrate glass substrates or plastic substrates 7 and 8. On the substrate? On the inner φ 7a and 8a of the broken liquid crystal 6 side, a liquid crystal driving electrode is formed, and 8 is omitted. Further, in Fig. 2, in the panel 6 which is a surface of the liquid crystal, in addition to the liquid crystal, a color filter film and a backing are provided. A eccentric cylinder 10 is disposed on the outer surfaces 7b and 8b of the two substrates 7, 8 to sandwich the substrates 7, 8 and to favor the passage of light from the backlight by the polarizing plates 9, = 10 Control to form a picture. In the following description, the liquid crystal panel 6, the substrate 7, the polarizing plate 9, the polarizing plate 9, and the like, which are constituent elements necessary for forming the liquid crystal panel 2 of the liquid crystal panel, are referred to as a liquid crystal panel body. . Among the two substrates 7 and 8 opposed to the liquid crystal 6, the substrate 7 (hereinafter referred to as [the second substrate 7]) on the backlight side is formed as a plate having light diffusibility. The light diffusing plate 7 can be obtained by forming a diffusion layer by applying a diffusion agent 71 such as a bead to the surface of the transparent plate (transparent glass substrate) 70 as shown in Fig. 3, for example. The upper limit of the thickness of the diffusion layer formed by the diffusing agent 71 is preferably 80 μm, more preferably 4 〇 vm. Further, the lower limit of the thickness of the diffusion layer formed by the diffusing agent 71 is preferably 5/m, and more preferably 20/zm. Since the diffusion layer is thin, even if the liquid crystal panel has diffusibility, the weight of the liquid crystal panel can be avoided and the size can be increased. Further, the other substrate 8 (hereinafter referred to as [second substrate 8]) is a transparent plate (glass substrate). Since the first substrate 7 has diffusibility, the liquid crystal panel body becomes the liquid crystal panel 2 with the light diffusing function. The light from the backlight b is diffused on the (diffusion layer) of the first substrate 7 to improve the lamp image to ij. That is, since the light emitted from the backlight B is low in quality, the liquid crystal panel itself can be improved, so that the illuminating grade of the backlight B can be low. Further, since the diffusion layer is provided on the side closer to the backlight B than the liquid crystal of the liquid crystal panel main body, and the light is diffused, the face quality can be satisfactorily maintained. In other words, in the present embodiment, the first substrate 7 11 1320864 on the side of the backlight B has diffusibility, and the second substrate 8 is a transparent plate, and has substantially no diffusibility. Therefore, it is possible to prevent the liquid crystal from being blurred. Thus, the influence on the pupil plane of the liquid crystal is suppressed as much as possible, and the improvement of the lamp image can be achieved. On the other hand, when the influence on the liquid crystal pupil surface is not particularly problematic, the second substrate 8 can also have light diffusibility, and the lamp image can be further improved. In order to effectively alleviate the lamp image by the thin diffusion layer, the diffused layer has a low total light transmittance and a high full-reflectivity. By increasing the reflectance, the light from the backlight B can be increased by the liquid crystal panel main body 2 without being reflected by the liquid crystal panel main body 2, and is reflected again by the inner surface of the light box 3 to be redirected to the liquid crystal panel main body 2 again. . When the reflection of light increases, the light valley is easily homogenized and the lamp image is moderated. Full light transmittance of the diffusion layer (test method; JIS (Japanese
Industrial Standards，日本工業標準）K73 61 )的上限值以 70%為佳，以65%為更佳。而且，作為全光線透過率的下 限值’以30%為佳，以50%為更佳。 擴散層的全光線反射率（測試法：jIS K71〇5)的上 限值以70%為佳，以50%為更佳。而且，作為全光線透過 率的下限值，以30%為佳，以40%為更佳。 擴散層的濁度值的上限值以1〇〇%為佳。而且，作為 濁度值的下限值’以60%為佳，以90%為更佳。 當藉由向基板表面塗佈擴散劑而得到基板7的光擴散 性時，利用塗佈量等可簡單地調整光的擴散程度，能夠不 12 1320864 降低基板（玻璃基板）7自身的強度·精度而得到擴散性。 而且’因為擴散層形成於玻璃基板7上，所以沒有必要考 慮擴散板那樣的變形。另外，因為擴散層存在於液晶面板 主體内部，所以擴散層不露出，可防止劣化。 另外’在基板7上形成的光擴散層，除了擴散劑的塗， 佈以外，也可以在基板7的表面7a、7b上利用噴砂法或蝕 刻法所形成的微細凹凸的形式而構成。因為這樣形成的擴 散層也較薄，所以可回避液晶面板2的重量增大、大型化。' 在基板7上之擴散劑71的塗佈（光擴散處理），只在 背光源一側的外面7b進行，而液晶6 —側的内面7a不進 行塗饰（光擴散處理）為佳。這是因為液晶側6的内面7a 具有使液晶分子排列的作用，所以如使内面7a為帶有凹凸 的面，則有可能妨礙均勻且良好的畫面表示。 而且’光的擴散效果也利用當光通過與具有擴散性的 面（層）折射率不同的層時之光的折射，且兩層的折射率 的差越大越能传到好的燈影（lamp image)改善。這裏， 雖然在基板7的外面7b上配置有偏振濾光器9,但是基板 7和偏振濾光器9並不是完全貼緊，在兩者之間實質上還 存在空氣層。而且，空氣層和玻璃，與液晶和玻璃相比， 折射率的差大。 因此，與在内面7a具有擴散面71的情況相比，在外 面几具有擴散面71，可謀求利用大的折射率差之更好的 燈影（lamp image)改善。 為了得到具有擴散性的基板7,也可採用以下這樣的 13 方法 ，可利用基板表面的微細凹凸而得到光擴散性 ρ /如’在對透明玻璃基板施以喷砂處理後，進行氣 〜=理㈣成消光綱。或者藉*在透明朗基板上進 仃利用金剛砂等的磨擦加工而進行消光加工。在這些情況 而且，也可為在内部添加了擴散劑的基板。在這種情 况下基板整體都可作為擴散層發揮作用，並利用基板内 部的擴散劑得到光擴散性。 在本實施形態中，背光源Β不只是不具有擴散板，也 不具有光學薄膜，但可根據需要，在液晶面板2和光源4 之間設置光學薄膜。例如，可在液晶面板2和光源4之間 設置反射性偏光薄膜（3Μ公司制DBEF等），並預先使反 射性偏光薄膜和偏光薄膜9的偏光轴一致。在這種情況 下’不通過偏光薄膜9的光不會在該偏光薄膜9中被吸收， 而由反射性偏光薄膜被向背光源Β側反射，所以光得到再 利用，最終使晝面輝度上升。 對這種具有光學薄膜的液晶面板，將在後述的實施形 態中進行詳細地說明。 另外，作為光學薄膜可為擴散薄膜、透鏡薄膜等。 而且，背光源Β也可具有擴散板。在這種情況下，即 使利用擴散板之燈影（lamp image)的改善不充分，也可 在液晶面板2侧進行燈影（lamp image)的改善’所以即 使使用擴散性不高的擴散板’也可得到良好的畫面品位。 或者，利用擴散板和擴散性液晶面板2的協合效應’ 得到較習知技術高的燈影（lamp image)改善性。因此’ 14 能夠進行背光源的薄型化（液晶顯示裝置的薄型化）和增 大光源4間距離並減少光源4的數目等，這些在習知技術 中會帶來品位低下（產生燈影（lamp image))的改善。 而且’因為在液晶面板2側對品位進行改善，所以即 使為因擴散板而在發光面存在暗部和異常發光部等低品位· 的背光源，也可在製品中採用。 另外’背光源不只可為正下方型，也可為在導光板的 侧面設置光源之側光型。在本發明中，無論為何種形式的 背光源，都可利用液晶面板2的擴散性，對背光源之光的 不均勻性進行改善。 圖4所示為關於第2實施形態之液晶顯示裝置un。 該液晶顯示裝置101的液晶面板主體102與既述之液晶面 板主體2同樣地，由相對的2片基板（玻璃基板或塑膠基 板）將液晶夾於中間’並在2片基板的外面侧設置有偏振 濾光器而將基板夾於中間。 但是，夾持液晶的基板7、8都是透明的。另外，基板 也可如圖2所示具有擴散性，在這種情況下，關於圖1〜 圖3之既述的說明，也都適用於後述的例子。 而且，以下所說明之所有的液晶面板的例子，都是在 液晶面板主體102的外部一體設置有光擴散層，作為帶有 光擴散機能的液晶面板而構成的。 關於第2實施形態之液晶顯示裝置101的背光源Β， 在燈箱103内設置有光源104。但是，背光源Β自身不帶 有擴散板110。 1320864 設置有擴散板110，作為用於將背光源B之光源的光 進行擴散的擴散層’且該擴散板11〇與液晶面板主體ι〇2 接合成一體。即，在液晶面板1〇2的背光源B 一側的面上 黏貼有擴散板110，形成帶有擴散板的液晶面板1〇2。另 外’作為擴散板，可制在内部混人了擴散_塑膠板。 擴散板110的厚度在2mm以内為佳。這是因為如擴散板 110較厚’則會受到因擴散板11〇的收縮而使液晶面板1〇2 歪斜等影響。而且，為了確保擴散性，擴散板11G的厚度 大於1mm為佳。 可取代擴散板110，而在液晶面板主體1〇2中設置薄 擴散薄膜。在液晶面板主體1〇2中被安裝在表面上的擴散 薄膜，厚度在1mm以下為佳。而且，擴散薄膜的厚度在 0.5mm以上為佳。另外，可在擴散板11〇或擴散薄膜中形 成防止吸水層，防止撓曲。 在圖4的液晶顯示裝置1〇1中，因為背光源B自身不 帶有擴散板，而在液晶面板主體1〇2上設置有擴散板11〇 或擴散薄Μ，所以擴散板11〇或擴散薄膜難以撓曲，不會 產生因撓曲造成的發光不均句。而且，因為擴散板11〇或 擴散薄膜輕，所以可實現輕量化。特別是當在液晶主體上 安裝厚度1mm以下的擴散薄膜時，擴散薄膜幾乎沒有重 量，所以可有效地防止重量化·大型化。而且，即使擴散薄 膜伸縮，由於液晶面板主體102具有足夠高的硬度，所以 幾乎不會產生液晶面板主體1〇2的歪斜。 另外，在第2實施形態中，只需將液晶面板從燈箱3 16 上取下，光源104即可露出，所以容易進行光源1〇4的 換。 而，在液晶面板的基板7、8也具有擴散性的情況 下，可得到因基板7、8和擴散板11〇而具有高擴散性的液 晶面板。 另外’液晶面板藉由利用上殼1〇5和燈箱3被夾在中 間而得到保持。 、，圖5所示為從背光源B —側觀察液晶面板主體1〇2的 =面圖。液晶面板102具有形成液晶畫面之矩形狀的畫面 =域102a，且畫面區域的4邊周圍邊緣部形成鏡框狀的非 畫，區域102b。晝面區域102a為用於形成畫面之需要照 射品位良好的光的區域，與此相對，非畫面區域1〇2b為不 形成畫面的區域，所以是不要求光的品位的區域。 這裏，前述擴散薄膜是在透明薄膜基體材料12〇a的一 面（或兩面）上塗佈擴散磁珠（bead)等擴散劑12〇b而形 成的。這種擴散薄膜120可在其整個表面上塗佈粘合劑 等，，如圖6 (a)所示，對液晶面板主體1〇2進行全面黏 貼。當進行全面黏貼時，以擴散磁珠（bead) 12〇b的面位 於與液晶面板主體102相反的一側，擴散劑12〇1>與液晶面 板體102不接觸之形態進行黏貼為佳。如擴散劑i2〇b 在液晶面板主體102—侧，則擴散劑12〇b表面由粘合劑等 被覆蓋’使利用折射率差異的擴散效果減弱 ’所以為了使 擴散劑12Gb表面存在空氣|，而使擴散劑12%處於與液 晶面板主體1〇2側相反的一侧為佳。 、 1320864 而且’擴散薄犋120也可如圖6 (b)、（c)杯-液晶面板主體102進行部分黏貼。 不 祕擴散薄^ 12G和液晶面板主體1G2在非畫面區 =面進二部分黏貼’能夠避免在黏貼位置之光的絲顯 曰面m圖6 (b)所示’使擴散劑12%側的面處於液 非晝面區域娜進行部分黏貼，則 液晶面板主體⑽和擴散薄膜擴散劑 以可有效地得到擴散效果。 存在工乳層，所 為背:;二可如圖6(c)所示’使擴散劑i2〇b側的面 夢由#另/用卜將ί散薄膜m和液晶面板主體1〇2的黏貼，可 ^。用製糊等_接、洗注、溶接等結合裝置125而進 可不和液晶面板主體m的部分黏貼位置也 邊或2晝面區域1〇2b，也可為4邊中的任1邊、2 因受執i 由不在全部4邊進行㈣’即使擴散薄膜120 热等而伸長，也難以產生撓曲。 對的=使2邊非晝面區域腿為賴位糾，既可為相 遷’也可為鄰接的2邊。 在非ί以下說財，所說的〔部分_〕主要是指 置面區域l〇2b的黏貼。 為了由薄擴散薄膜120也可謀求充分的燈影〇amp 1320864 image)緩和’作為擴散層的擴散薄膜的全光線透過率（測 試法：JIS K7361)，其上限值以70%為佳，65%為更佳。 而且，作為全光線透過率的下限值以3〇%為佳，以5〇%為 更佳。 作為擴散層的擴散薄膜120的全光線反射率（測試· 法：JIS K7105) ’其上限值以70%為佳，50%為更佳。而 且’作為全光線反射率的下限值以30%為佳，以40%為更 佳。 ’ 如上所述，藉由增大反射率而使燈影（lamp image) 容易緩和。 擴散薄膜120的濁度值’作為上限以ι〇〇%為佳。而 且，作為濁度值的下限，以60%為佳，以90%為更佳。 另外’上述擴散薄膜120的透過率、反射率、濁度值， 在後述的實施形態中也是同樣的。 圖7所示為關於第3實施形態之液晶面板。該液晶面 板是在液晶面板主體102的背光側一側的表面上，塗佈擴 散磁珠（bead)等擴散劑120b而形成擴散層的。藉由在液 晶面板主體102上直接塗佈擴散劑120b，可不必黏貼擴散 薄膜等，使成本降低。 另外’除了擴散劑120b以外，也可在液晶面板1〇2 的背光源一側的面上，利用喷砂法和蝕刻法產生微細的凹 凸而形成擴散層。 利用擴散劑120b之擴散層的全光線透過率及全光線 反射率，與既述之擴散薄膜120同樣地進行設置為佳。 19 1320864 圖8所示為關於第4實施形態之液晶面板。該液晶面 板是使液晶面板主體102配備擴散層12%和透鏡層（透鏡 薄膜；棱鏡薄膜）130的組合而構成。作為所採用的擴散 層，可如第3實施形態所示，利用擴散劑12〇b等在液晶面 板主體102上直接形成。 棱鏡薄膜130是在薄膜表面上形成多個微細的凸條 (棱柱）而形成透鏡面130a的，可利用透鏡面13〇&的透 鏡作用而進行集光，使輝度上升。即，這裏的透鏡薄膜13〇 作為輝度上升層發揮作用。另外，凸條的斷面形狀可為三 角开>、半圓、其他的凸形狀。 虽在表面形成有擴散層12〇b的液晶面板主體1〇2上， 再黏貼透鏡薄膜（光學薄膜）130時’如果像圖8 (a)那 樣將透鏡薄膜130全面對擴散層i2〇b進行黏貼，則在擴散 層120b表面上沒有空氣層，使擴散作用降低，所以如圖8 、（〇那樣，使透鏡薄膜130進行部分黏貼為佳。部 分黏貼位置以液晶面板主體的非畫面區域102b為佳。 透鏡面130a既可如圖（b)所示，朝向背光源B侧， 也可如圖8 (〇所示’朝向液晶面板主體102側。當透鏡 面13〇a朝向背光源b侧時（朝下），為了使輝度上升，使 凸條（棱柱）的長邊方向與光源4的長邊方向平行為佳。 當透鏡面130a朝向液晶面板主體1〇2侧時（朝上）， 凸條（棱柱）的方向可為任意的方向。但是，因凸條（棱 柱）的方向而使視野角特性不同’所以可酌情進行設置。 而且’如在透鏡面13〇a朝上的情況下，對擴散層12%進 20 1320864 行全面黏貼’則不只是擴散作用，利用透鏡之集光作用也 同時喪失，所以如既述那樣進行部分黏貼為佳。 圖9所示為關於第5實施形態之液晶面板。該液晶面 板具有作為擴散層的擴散薄膜12〇和作為透鏡層的透鏡薄 膜130之組合。 透鏡薄膜130既可如圖9 (a)所示，較擴散薄膜120 靠近液晶面板102侧配置，也可如圖9 (b)、（c)'(d)所 示’較擴散薄膜120靠近背光源B側配置。 圖9 (a)的透鏡薄膜130 ’其透鏡面i30a既可朝下， 也可朝上。而且，如圖9 (a)所示，液晶面板主體102和 透鏡薄膜130進行部分黏貼，且透鏡薄膜13〇和擴散薄膜 U0也進行部分黏貼為佳。當透鏡薄膜13〇和擴散薄膜12〇 進行部分黏貼時，可在擴散薄膜12〇之液晶面板主體12〇 一側或背光源B —側的任一面上’存在塗佈有擴散劑12〇b 的面。 另外，透鏡薄膜130和擴散薄膜12〇如不妨礙擴散性 和集光性，則也可全面黏貼。即，如使擴散薄膜12〇的塗 佈有擴散劑的面，為與透鏡薄膜130的非黏貼面，則也可 全面黏貼。 而且，也可在透鏡薄膜130的與透鏡面13加相反的面 上將擴散劑120b進行塗佈等’而在透鏡薄膜13〇上直接形 成擴散層’使透鏡層和擴散層一體化。 、，9(b)的透鏡薄膜130,其透鏡面13〇a朝下。而且， 透鏡薄膜130的凸條的長邊方向與燈的長邊方向平行為 21 1320864 ==:=_膜進行部分黏貼 被全面黏貼的擴散薄膜12〇，使其液晶面板主體 一側的面為塗佈有擴散劑120b的面為佳，且為了確 2 劑120b表面和液晶面板主體1〇2間的空氣層使擴散^ 120和液晶面板主體1〇2為部分黏貼。 /祺 圖9 (c)的透鏡薄膜130，也使其透鏡面13〇&朝下。 而且，透鏡薄膜130的凸條的長邊方向與燈的長邊方向 行為佳。透鏡薄膜13〇和擴散薄膜12〇為部分黏貼，且擴 散薄膜120使其塗佈有擴散劑120b的面為透鏡薄膜13〇 一侧，並與液晶面板主體1〇2進行全面黏貼。 圖9 (d)的透鏡薄膜13〇，其透鏡面130a朝上，並對 擴散薄膜120進行部分黏貼。圖9 (d)所示的，除了擴散 層利用擴散薄膜120構成以外，與圖8 (c)所示的相同。 圖10所示為關於第6實施形態之液晶面板。該液晶面 板在液晶面板主體102上配備有擴散層120 (120b)和偏 光層（偏光薄膜）140的組合而構成。 偏光薄膜140既可如圖10 (a)、（b)所示，配置於較 擴散層120 ( 120b)靠近液晶面板主體102 —側的位置， 也可如圖10(c)所示，配置於較擴散層120靠近背光源B 一侧的位置。 偏光薄膜140以使其偏光透過軸與液晶面板主體102 帶有的背光源一側（光入射侧）偏振濾光器9的偏光透過 軸朝向同一方向之形態而配置。不通過液晶面板主體102 22 1320864 帶有的偏振滤光器9的光，被該偏振濾光器9吸收 光的損耗’但是作為偏㈣膜14G，藉由_將不透過^ 光進行反射之反射性偏光薄膜（例如公司制db、 可使不通過偏光薄膜14G的級反射向背光源B側- 再次利用，所以輝度上升。即，偏光薄膜_作 I. 升層發揮作用。 &上 當如圖10 (a)所示，將偏光薄膜14〇黏貼在液晶 板主體102上時，可進行部分黏貼，但以全面黏貼為佳。 在偏光薄膜14G的下面，還可再黏貼作為擴散層的擴 膜120。假設擴散薄膜使擴散劑12%的面為背光源b 一 侧，則既可進行全面黏貼，也可進行部分黏貼。另外，如 使擴散劑120b的面在相反一侧，則以部分黏貼為佳。 如圖10 (b)所示，作為在偏光薄膜14〇的下面又設 置的擴散層，也可在偏光薄膜140的背光源B 一側的面上 直接塗佈擴散劑120b而形成。而且，也可由喷砂法等在偏 光薄膜140表面形成微細的凹凸而作為擴散層。 當如圖10 (〇所示，將擴散薄膜12〇黏貼在液晶面 板主體102上，並在其下面黏貼偏光薄膜14〇時，擴散薄 膜120使擴散劑120b的面為偏光薄膜140 —侧，且偏光薄 膜140在擴散薄膜120上進行部分黏貼。另外，也可取代 擴散薄膜’而將在液晶面板主體1〇2的表面上直接形成的 微細凹凸作為擴散層。 圖11所示為關於第7實施形態之液晶面板。該液晶面 板是在液晶面板主體102上設置透鏡層130和偏光層14〇 23 1320864 的組合而構成。另外，這襄雖然未圖示擴散層，但 液晶面板主體1G2内部進行設置，也可在透鏡薄膜⑽或 偏光薄膜140的表面上將擴散劑12_行塗佈|而形成。 構成偏光層之偏光_ 14G也可配置於較透鏡薄膜 130靠近背光源B -侧的位置，但如圖^所示，、 面板102—侧為佳。 日曰 當如圖11 (a)所示，使透鏡薄膜13〇朝上時，偏光 薄膜140纟液晶面板主體⑽上進行全面黏貼，或部分黏 貼。而且，使透鏡薄膜13〇對偏光薄膜14〇進行部分黏貼。 ^當如圖11 (b)所示’使透鏡薄膜130朝下時，偏光 薄膜140在液晶面板主體1〇2上進行全面黏貼，或部分黏 貼。而且，透鏡薄膜130也是既可對偏光薄膜14〇進行全 面黏貼，也可進行部分黏貼。另外，也可在偏光薄膜14〇 的背光源B —側的面上，一體式形成透鏡面13〇a ^ 圖12〜圖17所示為關於第8實施形.態之液晶面板。該 液晶面板是在液晶面板主體102上配置擴散層12〇、透鏡 層130、偏光層140的組合而構成。在第8實施形態中， 藉由利用擴散層120的燈影（iamp image)緩和、透鏡薄 膜130及偏光薄膜140的輝度上升，可得到高品位·高輝度。 這裏’擴散層可由微細的凹凸、所塗佈的擴散劑 120b、擴散薄膜120而形成。而且，透鏡層可利用透鏡薄 獏130而形成。偏光層可利用偏光薄膜14〇而形成，並使 偏光透過軸與液晶面板主體102的背光源一側（入光侧） 之偏光板的偏光透過軸吻合。 1320864 圖12(a)、（b)、（c)、（d)所示為在液晶面板主體102 的背光源B —側的正下方具有擴散層120 (120b)，並在其 下面具有透鏡層130，再往下還有偏光層14〇之情況。 圖12 (a)、（b)所示為使具有擴散性的面（微細的凹 凸、塗佈了擴散劑的面、擴散薄膜120的擴散劑120b的面） 朝向背光源B —側之情況。具體地說，就是使擴散薄膜120 的擴散劑120b的面朝下。 圖12 (a)是使透鏡薄膜130的透鏡面130a朝上的， 該透鏡薄膜130對擴散層120進行部分黏貼。偏光薄膜140 既可進行全面黏貼’也可進行部分黏貼。 圖12 (b)是使透鏡薄膜130的透鏡面130a朝下的， 該透鏡薄膜130對擴散層120進行部分黏貼。透鏡薄膜130 的凸條長邊方向與光源4的長邊方向平行。而且，偏光薄 麒140也進行部分黏貼。 圖12 (c)、（d)所示為使具有擴散性的面朝向液晶面 板主體102 —侧之情況。具體地說，就是使擴散薄膜12〇 的擴散劑120b的面朝上。擴散薄膜120對液晶面板主體 102進行部分黏貼。 圖12 (c)是使透鏡薄膜130的透鏡面13〇a朝上的， 該透鏡薄媒130對擴散層120進行部分黏貼。偏光薄膜140 既可進行全面黏貼，也可進行部分黏貼。 圖12 ( d)是使透鏡薄膜130的透鏡面l3〇a朝下的。 透鏡薄膜130的黏貼既可是全面的，也可是部分的。作為 透鏡層，也可取代透鏡薄膜130 ’而在擴散薄膜12〇的背 25 光源B—側的面上直接一體式形成。 另外，在圖12 (c)、（d)中，透鏡層130的凸條長邊 方向與光源4的長邊方向平行。而且，偏光賴14〇也進 行部分黏貼。 β圖13(a)'(b)、（c)、（d)所示為在液晶面板主體1〇2 的背光源B -侧的正下方具有擴散層12〇 ( 12〇b)，並在其 下面具有偏光層H〇，再往下還有透鏡層13〇之情況。 圖^ (a)、（b)所示為使具有擴散性的面（微細的凹 凸、^佈了擴散劑的面、擴散薄膜12〇的擴散劑12〇b的面） 朝向背光源B —側之情況。具體地說，就是使擴散薄膜12〇 的擴散劑120b的面朝下。 當如圖13 (a)所示，使透鏡薄膜13〇的透鏡面13〇a 朝上時’偏光薄膜140和透鏡薄膜13〇分別進行部分黏貼。 當如圖13 (b)所示’透鏡薄膜130的透鏡面130a朝 下時’凸條的長邊方向與光源4的長邊方向吻合。透鏡薄 膜130對偏光薄膜140既可進行全面黏貼，也可進行部分 黏貼。而且，也可在偏光薄膜14〇的背光源B —侧的面上 一體式形成透鏡面130a而形成透鏡層。 圖13 (c)、（d)所示為使具有擴散性的面朝向液晶面 板主體102 —側之情況。具體地說，就是使擴散薄膜12〇 的擴散劑120b的面朝上。擴散薄膜120對液晶面板主體 1〇2進行部分黏貼。偏光薄膜140對擴散薄膜120既町進 行全面黏貼，也可進行部分黏貼。而且，也可在擴散薄族 120的背光源b—側的面上一體式形成偏光層。 26 1320864 當如圖13 (d)所示’透鏡薄膜130的透鏡面130a朝 下時，凸條的長邊方向與光源4的長邊方向吻合。透鏡薄 膜130對偏光薄膜140既可進行全面黏貼，也可進行部分 黏貼。偏光薄膜140對擴散薄膜12〇可進行全面黏貼。而 且，也可將偏光層在擴散薄膜12〇上一體形成。透鏡薄膜 130也可在偏光薄膜14〇上進行全面黏貼。另外，也可在 擴散薄膜120上一體式形成偏光層及透鏡層。 圖14(a)、（b)、（c)、（d)所示為在液晶面板主體1〇2 的背光源B —侧的正下方具有偏光層14〇，並在其下面具 有擴散層120，再往下還有透鏡層13〇之情況。 當如圖14 (a)、（b)所示，使構成透鏡層之透鏡薄膜 130的透鏡面l3〇a朝上時，透鏡薄膜13〇對構成擴散層之 擴散薄膜120進行部分黏貼。 當如圖14 (a)所示，使擴散薄膜12〇的塗佈有擴散 劑120b的面朝下時，擴散薄膜12〇可對構唪擴散偏光層之 偏光薄膜140進行全面黏貼。 當如圖14 (b)所示，使擴散薄膜120的塗佈有擴散 劑議的面朝上時，擴散薄膜120可對偏光薄膜140進行 部分黏貼。 當如圖l4(c)、（d)所示，透鏡薄膜130的透鏡面130a 朝下時，透鏡薄祺130的凸條的長邊方向與光源4的長邊 方向吻合。 當如，14 (c)所示，使塗佈有擴散劑120b的面朝下 時，透鏡薄膜13〇對擴散薄膜12〇進行部分黏貼。 27 1320864 田如圖14 (d)所示，使塗佈有擴散劑n〇b的面朝上 時，透鏡薄膜130和擴散薄膜120可進行全面黏貼。 圖15 (a)、（b)所示為在液晶面板主體102的背光源 B側的正下方具有偏光層140，並在其下面具有透鏡層 130’再往下還有擴散層12〇之情況。構成偏光層之偏光二 膜140既可對液晶面板主體1〇2進行部分黏貼，也可如圖 示那樣進行全面黏貼。 . 圖丨5 (a)所示為透鏡薄膜13〇的透鏡面13〇a朝上的 N況透鏡薄膜丨3〇對偏光層14〇進行部分黏貼^構成擴 散層之擴散薄膜120既可對透鏡薄膜130進行全面黏貼， 也T進行。卩为黏貼。當進行部分黏貼時，擴散薄膜wo的 塗佈有擴散劑120b的面在上下任一侧都可以。而且，也可 在透鏡薄膜130的背光源b —側的面上，直接塗佈擴散劑 120b而形成擴散層。 圖15 (b)所示為透鏡薄膜13〇的透鏡面13〇a朝下的 情況。擴散薄膜120對透鏡層13〇進行部分黏貼。由於是 部分黏貼’擴散薄膜12〇的塗佈有擴散劑120b的面在上下 任一側都可以。另外，透鏡薄膜13〇的凸條長邊方向與光 源4的長邊方向吻合。 圖16(a)、（b)、（c)、（d)所示為在液晶面板主體1〇2 的背光源B —側的正下方具有透鏡層13〇，並在其下面具 有偏光層140，再往下還有擴散層12〇之情況。 當如圖16(a)、（b)所示，構成透鏡層之透鏡薄膜130 的透鏡面130a朝上時’透鏡薄膜13〇對液晶面板主體12〇 28 1320864 進行部分黏貼。而且，構成偏光層140之偏光薄膜14〇對 透鏡薄膜130進行全面黏貼。 當如圖16 (a)所示，擴散薄膜12〇的塗佈有擴散劑 12〇b的面朝下時，擴散薄膜120對偏光薄膜140進行全面 黏貼。 當如圖16 (b)所示，擴散薄膜120的塗佈有擴散劑 12〇b的面朝上時，擴散薄膜120對偏光薄膜140進行部分 黏貼。 另外’也可取代擴散薄膜12〇，藉由在偏光薄膜14〇 上直接塗佈擴散劑丨2〇b而形成擴散層。 當如圖16 (c)、（d)所示，透鏡層13〇的透鏡面13〇& 朝下時，可使構成透鏡層之透鏡薄膜13〇對液晶面板主體 120進行全面或部分黏貼。而且，透鏡層也可藉由在液晶 面板主體1〇2(的基板7等）上，直接刻出棱柱面而形成。 另外，透鏡層的凸條長邊方向與光源4的長邊方向吻合。 當如圖16 (c)所示，擴散薄膜120的塗佈有擴散劑 12〇b的面朝下時，擴散薄膜120可對偏光薄膜140進行全 面黏貼。 當如圖16 (d)所示，擴散薄膜120的塗佈有擴散劑 12%的面朝上時’擴散薄膜120對偏光薄膜140進行部分 黏貼。 另外’也可取代擴散薄膜120，藉由在偏光薄臈140 上直接塗佈擴散劑12〇b而形成擴散層。 圖17(&)、（1〇、（〇、（(1)所示為在液晶面板主體102 29 1320864 的背光源B —側的正下方具有透鏡層13〇，並在其下面具 有擴散層120，再在下還有偏光層14〇之情況。、 當如圖17 (a)、（b)所示，使構成透鏡層之透鏡薄膜 130的透鏡面130a朝上時，如果像圖17(a)所示的那樣i 使構成擴散層之擴散薄膜120的塗佈有擴散劑12〇b的面朝 上，則擴散薄膜120和偏光薄膜14〇可進行全面黏貼。 當如圖17 (b)所示，使擴散劑12〇b的面朝下時，擴 散薄膜120和偏光薄膜140可進行部分黏貼。 當如圖17 (c)、（d)所示，透鏡層13〇的透鏡面13〇a 朝下時，可使構成透鏡層之透鏡薄膜13〇在液晶面板主體 12〇上進行全面或部分黏貼。而且，透鏡層也可藉由在液 晶面板主體1〇2(的基板7等）上直接刻出棱柱面而形成。 另外，透鏡層的凸條長邊方向與光源4的長邊方向吻合。 —如果像圖17 (c)所示的那樣，使構成擴散層之擴散 薄膜120的塗佈有擴散劑12〇b的面朝上，則擴散薄膜12〇 和偏光薄膜140可進行全面黏貼。 *當如圖17 (d)所示，使擴散劑120b的面朝下時，擴 散薄膜120和偏光薄膜140可進行部分黏貼。 圖18所示為關於第9實施形態之液晶面板。該液晶面 板包括液晶面板主體102、擴散薄膜等光學薄膜120,130, M〇、作為用於保持光學薄膜而與液晶面板主體102結合的 薄膜保持構件之組裝片（package sheet) 15〇。 組震片（package sheet) 150在液晶面板主體1〇2的背 光源B —侧的表面上疊加1片或複數片光學薄膜12〇、 30 7320864 130、140，並以覆蓋該光學薄膜120、130、140之形態而 由粘著劑等黏貼在液晶面板主體1〇2的非畫面區域1〇2b 上。 組裝片（package sheet) 150既可在4邊的非畫面區域 102b的所有邊上進行黏貼，也可在3邊或2邊的非畫面區-域102b上進行黏貼。 另外為了使最下層的組裝片（package sheet) 可 . 黏貼在液晶面板主體102的非畫面區域1〇沘上，所形成的 光學薄膜 120、130、140 小於組裝片（paekage sheet) 15〇。 由組裝片（package sheet) 150所保持的光學薄膜無需 在液晶面板主體102或其他的光學薄膜上進行黏貼，所以 不需要黏貼步驟，在光學薄膜的片數多的情況下是有利的。 而且’當由組裝片（package sheet) 150保持光學薄膜 時，可不使光學薄膜進行部分黏貼，所以能夠回避進行部 分黏貼之情況下的熱收縮和撓曲的產生。 作為組裝片（packagesheet)150,利用透明的類型為 佳，但也可將具有擴散作用等這些作為光學薄膜的機能之 薄膜 120、130、140 ’ 作為組裝片（package sheet) 150 使 用。 圖19所示為第1〇實施形態。該液晶面板包括液晶面 板主體102、擴散薄膜等光學薄膜120，130，140、作為用 於與光學薄膜進行扣合併保持而與液晶面板主體1〇2結合 的薄膜保持構件之扣合部160。 " ~ 扣合部160對液晶面板主體102的周圍邊緣部的非晝 31 =區域lG2b利用枯著劑等進行黏貼，並具有黏貼在前述非 思面區域102b上且向背光源B —侧延伸之基部16如、從 基部160a頂端向液晶面板中央侧延伸之扣合爪16%。該 扣合部160以前述扣合爪160b掛接在光學薄膜12〇、13〇= 14〇的周圍邊緣部而使光學薄膜不會脫落之形態進行保 持。 ’、 扣合部160既可設置在4邊的非畫面區域1〇21)的所有 邊上，也可設置在3邊或2邊上。如果扣合部16〇在全部 4邊上進行設置，則可使光學薄膜保持牢固可靠，而且也 可作為增強液晶面板102的肋部而發揮作用。如果扣合部 在3邊或2邊上進行設置，則光學薄膜向扣合部16〇 的安裝變得容易。 扣合部160和光學薄膜不利用軲著劑等使兩者固定， 而^以扣合狀態進行保持，能夠回避光學薄膜的熱收縮 和撓曲的問題。而且，扣合部16G和光學__也可利 =著劑等進行固定，但是為了回避光學薄朗熱收縮和 撓曲的問題’只是液晶面板的1邊為佳。 在第9及第10實施形態中，作為光學薄膜的组合，可 „所有組合及其它的組合。而且，擴散薄膜12〇、 透鏡賴130、偏光薄膜140也分別都可利用複數片 如，透鏡薄膜13〇較佳可重疊到2片，擴 可重疊到3片。 關於本發.各申請專__發明，並不限定於上 述實施形態。關於各巾請專利範圍的發明在各中請專利範 32 圍之記述事項的範圍内，可進行各種變形β 【圖式簡單說明】 圖1為液晶顯示裝置的剖面圖。 圖2為液晶面板的剖面圖。 圖3為光擴散性基板的剖面圖。 圖4為關於第2實施形態之液晶顯示裝置的剖面圖。 圖5為液晶面板主體的平面圖。 圖6為關於第3實施形態之液晶面板的剖面圖。 圖7為關於第3實施形態之其他液晶面板的剖面圖。 圖8(a)〜圖8(c)為關於第4實施形態之液晶面板的 圖。 叫 圖9(a)〜圖9(d)為關於第5實施形態之液晶面板的剖面 圖。 圖^a)〜圖1〇⑹為關於第6實施形態之液晶面板 面圖。 ° 圖U(a)〜圖11(b)為關於第7實施形態之液晶面板的剖 面圖。 圖i2(a)〜圖12(d)為關於第8實施形態之液晶面板的剖 面圖。 圖13(a)〜圖13⑷為關於第8實施形態之其他液晶面板 的剖面圖。 圖“(a)〜圖14(d)為關於第8實施形態之其他液晶面板 的剖面圖。 圖i5(a)〜圖15(b)為關於第8實施形態之其他液晶面板 33 1320864 的剖面圖。 圖16(a)〜圖16(d)為關於第8實施形態之其他液晶面板 的剖面圖。 圖17(a)〜圖17(d)為關於第8實施形態之其他液晶面板 的剖面圖。 圖18為關於第9實施形態之液晶面板的剖面圖。 圖19為關於第10實施形態之液晶面板的剖面圖。 【主要元件符號說明】 1 :液晶顯示裝置 2 ·液晶面板 3 :燈箱 3a :底面 3b :側面 3c :支援部 4:光源（燈） 5 :上殼 6 ·液晶 7:基板（背光源侧） 7a :基板内面 7b :基板外面 8 :基板 8a :基板内面 8b:基板外面 9、10 :偏光板 34 1320864 70 :透明板 71 :擴散劑（光擴散層） 101 :液晶顯示裝置 102 :液晶面板主體 102a :畫面區域 102b :非晝面區域 103 :燈箱 104 :光源 110 :擴散板 120 :擴散薄膜 120a :薄膜基體材料 120b :擴散劑 130 :透鏡薄膜（輝度上升層） 130a :透鏡面 140 :偏光薄膜（輝度上升層） 15 0 ··組裝片（package sheet)(薄膜保持構件） 160 :扣合部（薄膜保持構件） 160a :基部 160b :扣合爪 B :背光源 35Industrial Standards, Japanese Industrial Standard) K73 61) has an upper limit of 70%, preferably 65%. Further, the lower limit value of the total light transmittance is preferably 30%, more preferably 50%. The upper limit of the total light reflectance (test method: jIS K71〇5) of the diffusion layer is preferably 70%, more preferably 50%. Further, as the lower limit of the total light transmittance, 30% is preferable, and 40% is more preferable. The upper limit of the haze value of the diffusion layer is preferably 1%. Further, as the lower limit value of the haze value, it is preferably 60%, more preferably 90%. When the diffusing agent is applied to the surface of the substrate to obtain the light diffusibility of the substrate 7, the degree of diffusion of light can be easily adjusted by the amount of coating or the like, and the strength and precision of the substrate (glass substrate) 7 itself can be reduced without 12 1320864. And get diffuse. Further, since the diffusion layer is formed on the glass substrate 7, it is not necessary to consider deformation such as a diffusion plate. Further, since the diffusion layer exists inside the liquid crystal panel main body, the diffusion layer is not exposed, and deterioration can be prevented. Further, the light-diffusing layer formed on the substrate 7 may be formed of fine irregularities formed by sandblasting or etching on the surfaces 7a and 7b of the substrate 7 in addition to the coating of the diffusing agent. Since the diffusion layer thus formed is also thin, the weight of the liquid crystal panel 2 can be prevented from increasing and increasing. The application (light diffusion treatment) of the diffusing agent 71 on the substrate 7 is performed only on the outer surface 7b of the backlight side, and the inner surface 7a of the liquid crystal 6 side is preferably not subjected to coating (light diffusion treatment). This is because the inner surface 7a of the liquid crystal side 6 has an action of aligning the liquid crystal molecules. Therefore, if the inner surface 7a is a surface having irregularities, it may hinder uniform and good screen display. Moreover, the 'light diffusion effect also utilizes the refraction of light when the light passes through a layer having a refractive index different from that of the diffusible surface (layer), and the larger the difference in refractive index between the two layers, the better the light can be transmitted to the lamp image. )improve. Here, although the polarizing filter 9 is disposed on the outer surface 7b of the substrate 7, the substrate 7 and the polarizing filter 9 are not completely in close contact with each other, and substantially an air layer exists therebetween. Further, the air layer and the glass have a large difference in refractive index as compared with the liquid crystal and the glass. Therefore, compared with the case where the inner surface 7a has the diffusing surface 71, the diffusing surface 71 is provided on the outer surface, and it is possible to improve the lamp image with a large refractive index difference. In order to obtain the diffusible substrate 7, the following 13 methods can be employed, and the light diffusibility ρ can be obtained by using the fine unevenness on the surface of the substrate. For example, after the blasting treatment is applied to the transparent glass substrate, the gas is subjected to gas== (4) into the extinction program. Alternatively, the matte finish can be performed by rubbing on a transparent substrate or using a diamond or the like. In these cases, a substrate to which a diffusing agent is added may be used. In this case, the entire substrate can function as a diffusion layer, and light diffusibility can be obtained by using a diffusing agent inside the substrate. In the present embodiment, the backlight Β does not have a diffusing plate or an optical film, but an optical film may be provided between the liquid crystal panel 2 and the light source 4 as needed. For example, a reflective polarizing film (DBEF manufactured by Nippon Steel Co., Ltd.) can be disposed between the liquid crystal panel 2 and the light source 4, and the polarizing axes of the reflective polarizing film and the polarizing film 9 can be aligned in advance. In this case, the light that does not pass through the polarizing film 9 is not absorbed by the polarizing film 9, and the reflective polarizing film is reflected toward the back side of the backlight. Therefore, the light is reused, and finally the surface luminance is increased. Such a liquid crystal panel having an optical film will be described in detail in an embodiment to be described later. Further, the optical film may be a diffusion film, a lens film or the like. Moreover, the backlight Β can also have a diffuser plate. In this case, even if the improvement of the lamp image by the diffusion plate is insufficient, the lamp image can be improved on the liquid crystal panel 2 side. Therefore, even if a diffusion plate having low diffusibility is used, Get a good picture quality. Alternatively, the lamp image improving property of the prior art is obtained by the synergistic effect of the diffusing plate and the diffusing liquid crystal panel 2. Therefore, it is possible to reduce the thickness of the backlight (thinning of the liquid crystal display device) and increase the distance between the light sources 4 and reduce the number of the light sources 4, which may cause a low grade in the prior art (lamp image) )) Improvements. Further, since the grade is improved on the liquid crystal panel 2 side, even if it is a low-grade backlight such as a dark portion or an abnormal light-emitting portion on the light-emitting surface due to the diffusion plate, it can be used in a product. In addition, the backlight may be not only a direct type but also a side light type in which a light source is disposed on a side surface of the light guide plate. In the present invention, the diffusibility of the liquid crystal panel 2 can be utilized regardless of the form of the backlight, and the unevenness of the light of the backlight can be improved. Fig. 4 shows a liquid crystal display device un in the second embodiment. In the same manner as the liquid crystal panel main body 2 described above, the liquid crystal panel main body 102 of the liquid crystal display device 101 has liquid crystals sandwiched between two opposing substrates (a glass substrate or a plastic substrate) and is provided on the outer surface side of the two substrates. The polarizing filter sandwiches the substrate in the middle. However, the substrates 7, 8 holding the liquid crystal are all transparent. Further, the substrate may have diffusibility as shown in Fig. 2. In this case, the descriptions of Figs. 1 to 3 are also applicable to the examples described later. Further, in all of the examples of the liquid crystal panels described below, a light diffusion layer is integrally provided outside the liquid crystal panel body 102, and is configured as a liquid crystal panel having a light diffusing function. In the backlight 液晶 of the liquid crystal display device 101 of the second embodiment, the light source 104 is provided in the light box 103. However, the backlight Β itself does not have the diffusion plate 110. 1320864 A diffusion plate 110 is provided as a diffusion layer for diffusing light of a light source of the backlight B, and the diffusion plate 11A is integrally joined to the liquid crystal panel body ι2. That is, the diffusion plate 110 is adhered to the surface of the liquid crystal panel 1A on the side of the backlight B, and the liquid crystal panel 1 2 having the diffusion plate is formed. In addition, as a diffusing plate, it can be made to mix inside the plastic_plastic plate. The thickness of the diffusion plate 110 is preferably within 2 mm. This is because if the diffusion plate 110 is thicker, it is affected by the shrinkage of the diffusion plate 11〇 and the liquid crystal panel 1〇2 is skewed. Further, in order to secure the diffusibility, it is preferable that the thickness of the diffusion plate 11G is larger than 1 mm. Instead of the diffusion plate 110, a thin diffusion film is provided in the liquid crystal panel body 1A2. The diffusing film which is mounted on the surface of the liquid crystal panel main body 1A2 preferably has a thickness of 1 mm or less. Moreover, the thickness of the diffusion film is at 0. More than 5mm is preferred. Further, the water absorbing layer can be formed in the diffusion plate 11 〇 or the diffusion film to prevent deflection. In the liquid crystal display device 1〇1 of FIG. 4, since the backlight B itself does not have a diffusion plate, and the diffusion panel 11〇 or the diffusion thin film is provided on the liquid crystal panel main body 1〇2, the diffusion plate 11 is spread or diffused. The film is difficult to flex and does not cause uneven illumination due to deflection. Further, since the diffusion plate 11 or the diffusion film is light, weight reduction can be achieved. In particular, when a diffusion film having a thickness of 1 mm or less is attached to the liquid crystal body, the diffusion film has almost no weight, so that it is possible to effectively prevent weight increase and enlargement. Further, even if the diffusion film expands and contracts, since the liquid crystal panel main body 102 has a sufficiently high hardness, the skew of the liquid crystal panel main body 1〇2 hardly occurs. Further, in the second embodiment, since the liquid crystal panel is removed from the light box 3 16 and the light source 104 is exposed, it is easy to change the light source 1〇4. On the other hand, when the substrates 7 and 8 of the liquid crystal panel are also diffusible, a liquid crystal panel having high diffusibility due to the substrates 7 and 8 and the diffusion plate 11 can be obtained. Further, the liquid crystal panel is held by the upper case 1〇5 and the light box 3 being sandwiched therebetween. Fig. 5 is a plan view showing the liquid crystal panel main body 1〇2 viewed from the side of the backlight B. The liquid crystal panel 102 has a rectangular screen image field 102a in which a liquid crystal screen is formed, and the peripheral edge portions of the four sides of the screen region form a frame-shaped non-drawing area 102b. The facet area 102a is an area for forming a light having a good illumination quality for the screen, whereas the non-screen area 1〇2b is an area where the screen is not formed, and therefore is a region where the quality of the light is not required. Here, the diffusion film is formed by coating a diffusion agent 12〇b such as a diffusion bead on one side (or both sides) of the transparent film substrate 12a. The diffusion film 120 can be coated with an adhesive or the like on the entire surface thereof, and as shown in Fig. 6 (a), the liquid crystal panel main body 1 2 is completely adhered. When the entire surface is pasted, it is preferable that the surface of the diffusion bead 12 〇b is on the side opposite to the liquid crystal panel main body 102, and the diffusion agent 12〇1> is adhered to the liquid crystal panel body 102 without contact. When the diffusing agent i2〇b is on the liquid crystal panel main body 102 side, the surface of the diffusing agent 12〇b is covered with an adhesive or the like, and the diffusion effect by the difference in refractive index is weakened. Therefore, in order to cause air|spray on the surface of the diffusing agent 12Gb, It is preferable that 12% of the diffusing agent is on the side opposite to the side of the liquid crystal panel main body 1〇2. 1320864 Further, the diffusion thin film 120 may be partially adhered as shown in FIGS. 6(b) and (c) of the cup-liquid crystal panel main body 102. The secret diffusion thin ^ 12G and the liquid crystal panel main body 1G2 in the non-screen area = face into the two parts of the paste 'can avoid the light in the pasting position of the silk surface m Figure 6 (b) shows the diffusion agent 12% side When the surface is partially adhered in the liquid non-face area, the liquid crystal panel body (10) and the diffusion film diffusing agent can effectively obtain a diffusion effect. There is a working layer of milk, which is the back:; two can be as shown in Figure 6 (c) 'make the surface of the diffusing agent i2〇b side of the other side of the film and the liquid crystal panel body 1〇2 paste , can ^. It is possible to use a bonding device such as a paste or the like, and to join the portion of the liquid crystal panel main body m, or the two-sided area 1〇2b, or any one of the four sides, 2 Since the execution is not performed on all four sides (4) 'Even if the diffusion film 120 is heated or the like is elongated, it is difficult to cause deflection. The pair = makes the two sides of the non-faceted area leg correct, and can be either a phase transition or a neighboring edge. In the case of non- ί, the said [part _] mainly refers to the pasting of the surface area l〇2b. In order to reduce the total light transmittance of the diffusion film as the diffusion layer (test method: JIS K7361), the upper limit value is preferably 70%, 65%, in order to reduce the total light transmittance of the diffusion film as the diffusion layer from the thin diffusion film 120. For better. Further, the lower limit of the total light transmittance is preferably 3 %, more preferably 5 %. The total light reflectance (test method: JIS K7105) of the diffusion film 120 as the diffusion layer is preferably 70% or more, and 50% is more preferable. Further, the lower limit of the total light reflectance is preferably 30%, more preferably 40%. As described above, the lamp image is easily relaxed by increasing the reflectance. The haze value of the diffusion film 120 is preferably 〇〇% as the upper limit. Further, as the lower limit of the turbidity value, 60% is preferable, and 90% is more preferable. Further, the transmittance, reflectance, and haze value of the diffusion film 120 are the same in the embodiments described later. Fig. 7 shows a liquid crystal panel according to a third embodiment. This liquid crystal panel is formed by diffusing a diffusion agent 120b such as a bead on the surface on the backlight side of the liquid crystal panel main body 102 to form a diffusion layer. By directly applying the diffusing agent 120b to the liquid crystal panel main body 102, it is not necessary to adhere the diffusion film or the like, and the cost is lowered. Further, in addition to the diffusing agent 120b, a fine diffusion can be formed on the surface of the backlight side of the liquid crystal panel 1A2 by a sand blasting method and an etching method to form a diffusion layer. The total light transmittance and the total light reflectance of the diffusion layer of the diffusing agent 120b are preferably set in the same manner as the diffusion film 120 described above. 19 1320864 Fig. 8 shows a liquid crystal panel according to a fourth embodiment. This liquid crystal panel is configured by providing a combination of a diffusion layer 12% and a lens layer (lens film; prism film) 130 in the liquid crystal panel main body 102. The diffusion layer to be used can be directly formed on the liquid crystal panel main body 102 by the diffusion agent 12〇b or the like as shown in the third embodiment. The prism film 130 is formed by forming a plurality of fine ridges (prisms) on the surface of the film to form the lens surface 130a, and is condensed by the lens action of the lens surface 13 〇 & That is, the lens film 13A here functions as a luminance rising layer. Further, the cross-sectional shape of the ridges may be a triangular opening >, a semicircle, and other convex shapes. When the lens film (optical film) 130 is adhered to the liquid crystal panel main body 1〇2 on which the diffusion layer 12〇b is formed on the surface, the lens film 130 is entirely integrated on the diffusion layer i2〇b as shown in FIG. 8(a). In the case of the adhesive layer, there is no air layer on the surface of the diffusion layer 120b, so that the diffusion effect is lowered. Therefore, as shown in FIG. 8, the lens film 130 is partially pasted. The partial adhesion position is the non-screen area 102b of the liquid crystal panel main body. Preferably, the lens surface 130a may face the backlight B side as shown in FIG. (b), or may be directed toward the liquid crystal panel main body 102 side as shown in FIG. 8 (when the lens surface 13〇a faces the backlight b side). (toward), in order to increase the luminance, it is preferable that the longitudinal direction of the ridge (prism) is parallel to the longitudinal direction of the light source 4. When the lens surface 130a faces the side of the liquid crystal panel main body 1 2 (upward), convex The direction of the strip (prism) may be any direction. However, since the viewing angle characteristics are different due to the direction of the ridge (prism), it can be set as appropriate. And, as in the case where the lens surface 13a faces upward, For the diffusion layer 12% into 20 1320864 The "full adhesion" is not only a diffusion effect, but also the concentrating effect by the lens is also lost. Therefore, it is preferable to perform partial adhesion as described above. Fig. 9 shows a liquid crystal panel according to the fifth embodiment. The liquid crystal panel has diffusion. The combination of the diffusion film 12〇 of the layer and the lens film 130 as the lens layer. The lens film 130 may be disposed closer to the liquid crystal panel 102 than the diffusion film 120 as shown in FIG. 9(a), or as shown in FIG. 9(b). (c) '(d) is shown as being disposed closer to the backlight B side than the diffusion film 120. The lens surface 130' of the lens film 130' of Fig. 9 (a) may be directed downward or upward. 9 (a), the liquid crystal panel main body 102 and the lens film 130 are partially adhered, and the lens film 13A and the diffusion film U0 are also partially adhered. When the lens film 13A and the diffusion film 12 are partially pasted, The surface on which the diffusing agent 12〇b is applied may be present on either the liquid crystal panel main body 12 side of the diffusion film 12 or the side of the backlight B. The lens film 130 and the diffusion film 12 are not hindered. Diffuse and concentrating, then The adhesive film is coated on the surface of the lens film 130 and the lens surface 130 On the opposite surface, the diffusion agent 120b is coated or the like, and a diffusion layer is formed directly on the lens film 13A to integrate the lens layer and the diffusion layer. The lens film 130 of 9(b) has a lens surface 13〇 a. The longitudinal direction of the ridge of the lens film 130 is parallel to the longitudinal direction of the lamp. 21 1320864 ==:= _ The film is partially adhered to the diffusion film 12 全面 which is completely adhered to the liquid crystal panel body The side surface is preferably a surface coated with the diffusing agent 120b, and the diffusion layer 120 and the liquid crystal panel main body 1〇2 are partially adhered in order to confirm the air layer between the surface of the liquid 120 body and the liquid crystal panel main body 1〇2. / 透镜 The lens film 130 of Fig. 9 (c) also has its lens surface 13 〇 & facing downward. Further, the longitudinal direction of the ridges of the lens film 130 is better than the longitudinal direction of the lamp. The lens film 13A and the diffusion film 12A are partially adhered, and the film 120 is spread so that the surface on which the diffusion agent 120b is applied is the lens film 13A side, and is completely adhered to the liquid crystal panel body 1A2. The lens film 13A of Fig. 9(d) has its lens surface 130a facing upward and partially adheres to the diffusion film 120. Fig. 9(d) is the same as that shown in Fig. 8(c) except that the diffusion layer is formed by the diffusion film 120. Fig. 10 shows a liquid crystal panel according to a sixth embodiment. The liquid crystal panel is configured by a combination of a diffusion layer 120 (120b) and a polarizing layer (polarizing film) 140 on the liquid crystal panel main body 102. The polarizing film 140 may be disposed on the side closer to the liquid crystal panel main body 102 than the diffusion layer 120 (120b) as shown in FIGS. 10(a) and 10(b), or may be disposed as shown in FIG. 10(c). The diffusion layer 120 is closer to the side of the backlight B side. The polarizing film 140 is disposed such that its polarization transmission axis is oriented in the same direction as the polarization transmission axis of the backlight side (light incident side) polarizing filter 9 of the liquid crystal panel main body 102. The light that does not pass through the polarizing filter 9 provided in the liquid crystal panel main body 102 22 1320864 is absorbed by the polarizing filter 9 as a loss of light, but as a partial (four) film 14G, it is reflected by the reflection of the light. The polarizing film (for example, the db made by the company can be used to reflect the level of the polarizing film 14G to the backlight B side), so that the luminance is increased. Ascending layers play a role. When the polarizing film 14 is adhered to the liquid crystal panel main body 102 as shown in Fig. 10 (a), partial adhesion can be performed, but it is preferable to apply it in a full thickness. On the lower surface of the polarizing film 14G, a film 120 as a diffusion layer can be further adhered. Assuming that the diffusion film has 12% of the surface of the diffusing agent as the side of the backlight b, it is possible to perform both full adhesion and partial adhesion. Further, if the surface of the diffusing agent 120b is on the opposite side, partial adhesion is preferred. As shown in Fig. 10 (b), a diffusion layer provided on the lower surface of the polarizing film 14A may be formed by directly applying a diffusing agent 120b to the surface of the polarizing film 140 on the backlight B side. Further, fine irregularities may be formed on the surface of the polarizing film 140 by a sand blast method or the like to form a diffusion layer. When the diffusion film 12 is adhered to the liquid crystal panel main body 102 and the polarizing film 14 is adhered to the lower surface as shown in FIG. 10 (〇), the diffusion film 120 has the surface of the diffusion agent 120b as the polarizing film 140 side, and The polarizing film 140 is partially adhered to the diffusion film 120. Alternatively, the fine unevenness formed directly on the surface of the liquid crystal panel body 1 2 may be used as a diffusion layer instead of the diffusion film '. Fig. 11 shows the seventh embodiment. In the liquid crystal panel, the liquid crystal panel main body 102 is provided with a combination of the lens layer 130 and the polarizing layer 14〇23 1320864. Further, although the diffusion layer is not shown, the inside of the liquid crystal panel main body 1G2 is provided. Alternatively, the diffusing agent may be coated on the surface of the lens film (10) or the polarizing film 140. The polarizing film _ 14G constituting the polarizing layer may be disposed closer to the backlight B side than the lens film 130. However, as shown in FIG. 2, the side of the panel 102 is preferably. As shown in FIG. 11(a), when the lens film 13 is facing upward, the polarizing film 140 is completely attached to the liquid crystal panel main body (10). Or partially pasting. Further, the lens film 13 is partially adhered to the polarizing film 14A. ^ When the lens film 130 is faced downward as shown in FIG. 11(b), the polarizing film 140 is on the liquid crystal panel main body 1〇2. The lens film 130 can also be fully adhered or partially adhered to the polarizing film 14A. Alternatively, it can be on the side of the backlight B of the polarizing film 14〇. The integral lens surface 13〇a ^ is shown in Fig. 12 to Fig. 17 for the eighth embodiment. LCD panel. In the liquid crystal panel, a combination of a diffusion layer 12A, a lens layer 130, and a polarizing layer 140 is disposed on the liquid crystal panel main body 102. In the eighth embodiment, the luminance of the lens film 130 and the polarizing film 140 is increased by the iamp image of the diffusion layer 120, and high luminance and high luminance can be obtained. Here, the diffusion layer can be formed by fine irregularities, the applied diffusing agent 120b, and the diffusion film 120. Moreover, the lens layer can be formed using the lens thin film 130. The polarizing layer can be formed by the polarizing film 14A, and the polarizing transmission axis can be matched with the polarizing transmission axis of the polarizing plate on the backlight side (light incident side) of the liquid crystal panel main body 102. 1320864 FIGS. 12(a), (b), (c), and (d) show a diffusion layer 120 (120b) directly under the backlight B side of the liquid crystal panel main body 102, and a lens layer under the backlight panel B. 130, and there is a case where the polarizing layer 14 is further down. Fig. 12 (a) and (b) show the case where the diffusible surface (the fine convex surface, the surface coated with the diffusing agent, and the surface of the diffusing agent 120b of the diffusing film 120) are directed to the side of the backlight B. Specifically, the diffusion agent 120b of the diffusion film 120 is faced downward. Fig. 12 (a) is a view in which the lens surface 130a of the lens film 130 faces upward, and the lens film 130 partially adheres to the diffusion layer 120. The polarizing film 140 can be used for both full adhesion and partial adhesion. Fig. 12(b) shows that the lens surface 130a of the lens film 130 faces downward, and the lens film 130 partially adheres to the diffusion layer 120. The longitudinal direction of the ridge of the lens film 130 is parallel to the longitudinal direction of the light source 4. Moreover, the polarizing film 140 is also partially adhered. Fig. 12 (c) and (d) show the case where the diffusible surface faces the side of the liquid crystal panel main body 102. Specifically, the surface of the diffusing agent 120b of the diffusion film 12? is faced upward. The diffusion film 120 partially adheres to the liquid crystal panel main body 102. 12(c) shows that the lens surface 13A of the lens film 130 faces upward, and the lens thin film 130 partially adheres to the diffusion layer 120. The polarizing film 140 can be used for both full adhesion and partial adhesion. Fig. 12 (d) is such that the lens surface l3a of the lens film 130 faces downward. The adhesion of the lens film 130 can be either comprehensive or partial. Instead of the lens film 130', the lens layer may be integrally formed directly on the surface of the back surface 25 of the diffusion film 12A. Further, in Figs. 12(c) and (d), the longitudinal direction of the ridge of the lens layer 130 is parallel to the longitudinal direction of the light source 4. Moreover, the partial light is also applied to the polarized film. β(a)'(b), (c), and (d) show a diffusion layer 12〇(12〇b) directly under the backlight B-side of the liquid crystal panel body 1A2, and There is a polarizing layer H〇 underneath, and a lens layer 13〇 down there. (a) and (b) show that the diffusible surface (fine irregularities, the surface on which the diffusing agent is applied, and the surface of the diffusing film 12〇b of the diffusion film 12〇) are directed toward the backlight B side. The situation. Specifically, the diffusion agent 120b of the diffusion film 12 is faced downward. When the lens surface 13a of the lens film 13A is turned upward as shown in Fig. 13 (a), the polarizing film 140 and the lens film 13 are partially pasted, respectively. When the lens surface 130a of the lens film 130 faces downward as shown in Fig. 13 (b), the longitudinal direction of the ridges coincides with the longitudinal direction of the light source 4. The lens film 130 can be completely pasted or partially adhered to the polarizing film 140. Further, the lens surface 130a may be integrally formed on the surface on the side of the backlight B of the polarizing film 14A to form a lens layer. Figs. 13(c) and 13(d) show the case where the diffusible surface faces the side of the liquid crystal panel main body 102. Specifically, the surface of the diffusing agent 120b of the diffusion film 12? is faced upward. The diffusion film 120 partially adheres to the liquid crystal panel main body 1〇2. The polarizing film 140 is completely adhered to the diffusion film 120, and may be partially pasted. Further, a polarizing layer may be integrally formed on the surface on the side of the backlight b of the diffusion thin group 120. 26 1320864 When the lens surface 130a of the lens film 130 faces downward as shown in Fig. 13 (d), the longitudinal direction of the ridges coincides with the longitudinal direction of the light source 4. The lens film 130 can be completely pasted or partially adhered to the polarizing film 140. The polarizing film 140 can be completely adhered to the diffusion film 12A. Further, the polarizing layer may be integrally formed on the diffusion film 12A. The lens film 130 can also be fully adhered to the polarizing film 14A. Further, a polarizing layer and a lens layer may be integrally formed on the diffusion film 120. 14(a), (b), (c), and (d) show a polarizing layer 14A directly under the backlight B side of the liquid crystal panel main body 1A2, and a diffusion layer 120 under the liquid crystal panel main body 1A2. There are also lens layers 13〇 down. As shown in Figs. 14 (a) and (b), when the lens surface 13a of the lens film 130 constituting the lens layer faces upward, the lens film 13 is partially adhered to the diffusion film 120 constituting the diffusion layer. When the surface of the diffusion film 12A coated with the diffusing agent 120b is faced downward as shown in Fig. 14(a), the diffusion film 12A can completely adhere the polarizing film 140 which is configured to diffuse the polarizing layer. When the surface of the diffusion film 120 coated with the diffusion agent is faced upward as shown in Fig. 14 (b), the diffusion film 120 can partially adhere the polarizing film 140. When the lens surface 130a of the lens film 130 faces downward as shown in Figs. 14 (c) and (d), the longitudinal direction of the ridge of the lens stack 130 coincides with the longitudinal direction of the light source 4. When, as shown in Fig. 14 (c), the surface on which the diffusing agent 120b is applied faces downward, the lens film 13 is partially adhered to the diffusion film 12A. 27 1320864 As shown in Fig. 14(d), when the surface on which the diffusion agent n〇b is applied faces upward, the lens film 130 and the diffusion film 120 can be completely pasted. 15(a) and 15(b) show a case where the polarizing layer 140 is provided directly under the backlight B side of the liquid crystal panel main body 102, and the lens layer 130' is further provided below and the diffusion layer 12 is further down. . The polarizing film 140 constituting the polarizing layer may be partially adhered to the liquid crystal panel main body 1 2 or may be entirely adhered as shown in the drawing. . Figure 5 (a) shows the N-state lens film 丨3 of the lens film 13〇 facing upward, and the partial polarization of the polarizing layer 14〇. The diffusion film 120 constituting the diffusion layer can be used for the lens film. 130 for full adhesion, also T. Stick to it. When the partial adhesion is performed, the surface of the diffusion film wo to which the diffusion agent 120b is applied may be on either side. Further, a diffusion layer 120b may be directly applied to the surface of the lens film 130 on the side of the backlight b to form a diffusion layer. Fig. 15 (b) shows a case where the lens surface 13a of the lens film 13A faces downward. The diffusion film 120 partially adheres the lens layer 13A. The surface to which the diffusing agent 120b is applied, which is partially adhered to the diffusing film 12, may be on either side of the upper and lower sides. Further, the longitudinal direction of the ridge of the lens film 13A coincides with the longitudinal direction of the light source 4. 16(a), (b), (c), and (d) show a lens layer 13A directly under the backlight B side of the liquid crystal panel body 1A2, and a polarizing layer 140 on the lower side thereof. There are also cases where the diffusion layer is 12 往 down. When the lens surface 130a of the lens film 130 constituting the lens layer faces upward as shown in Figs. 16(a) and (b), the lens film 13 is partially adhered to the liquid crystal panel main body 12 28 1320864. Further, the polarizing film 14A constituting the polarizing layer 140 is completely adhered to the lens film 130. When the surface of the diffusion film 12A coated with the diffusion agent 12?b faces downward as shown in Fig. 16(a), the diffusion film 120 completely bonds the polarizing film 140. When the surface of the diffusion film 120 coated with the diffusion agent 12?b faces upward as shown in Fig. 16 (b), the diffusion film 120 partially adheres to the polarizing film 140. Alternatively, instead of the diffusion film 12, a diffusion layer may be formed by directly applying a diffusion agent 丨2〇b to the polarizing film 14A. When the lens faces 13 of the lens layer 13A face downward as shown in Figs. 16(c) and (d), the lens film 13A constituting the lens layer can be completely or partially adhered to the liquid crystal panel main body 120. Further, the lens layer can be formed by directly engraving the prism surface on the liquid crystal panel main body 1 2 (the substrate 7 or the like). Further, the longitudinal direction of the ridge of the lens layer coincides with the longitudinal direction of the light source 4. When the surface of the diffusion film 120 coated with the diffusion agent 12?b faces downward as shown in Fig. 16(c), the diffusion film 120 can be completely adhered to the polarizing film 140. When the diffusion film 120 is coated with the diffusing agent 12% face up as shown in Fig. 16 (d), the diffusion film 120 partially adheres the polarizing film 140. Alternatively, instead of the diffusion film 120, the diffusion layer 12b may be directly coated on the polarizing film 140 to form a diffusion layer. 17(&), (1〇, (〇, (1) shows a lens layer 13〇 directly under the backlight B side of the liquid crystal panel main body 102 29 1320864, and has a diffusion layer underneath 120, and there is a case where the polarizing layer 14 is further down. When the lens surface 130a of the lens film 130 constituting the lens layer faces upward as shown in Figs. 17(a) and (b), if it is like Fig. 17 (a) As shown in the figure i, when the surface of the diffusion film 120 constituting the diffusion layer coated with the diffusion agent 12〇b faces upward, the diffusion film 120 and the polarizing film 14A can be completely pasted. As shown in Fig. 17 (b) It is shown that when the face of the diffusing agent 12〇b faces downward, the diffusion film 120 and the polarizing film 140 can be partially adhered. As shown in FIGS. 17(c) and (d), the lens surface 13〇 of the lens layer 13〇 When facing downward, the lens film 13 constituting the lens layer can be fully or partially adhered to the liquid crystal panel main body 12, and the lens layer can also be directly on the liquid crystal panel main body 1 (2, etc.) The prism face is formed by engraving. In addition, the longitudinal direction of the ridge of the lens layer coincides with the longitudinal direction of the light source 4. - If it is like Fig. 17 (c) As shown in the figure, when the surface of the diffusion film 120 constituting the diffusion layer coated with the diffusion agent 12〇b faces upward, the diffusion film 12A and the polarizing film 140 can be completely pasted. * As shown in Fig. 17 (d) When the surface of the diffusing agent 120b faces downward, the diffusion film 120 and the polarizing film 140 can be partially adhered. Fig. 18 shows a liquid crystal panel according to the ninth embodiment. The liquid crystal panel includes an optical body such as a liquid crystal panel main body 102 and a diffusion film. The film 120, 130, M〇, a package sheet 15 as a film holding member for holding the optical film and bonded to the liquid crystal panel main body 102. A package sheet 150 backlight of the liquid crystal panel main body 1〇2 One or a plurality of optical films 12A, 30 7320864 130, 140 are superimposed on the surface of the source B side, and are adhered to the liquid crystal panel main body 1 by an adhesive or the like in a form covering the optical films 120, 130, and 140. The non-screen area 1 〇 2b of 2. The package sheet 150 may be pasted on all sides of the non-screen area 102b of the four sides, or on the non-picture area-domain 102b of the three sides or two sides. Paste. Also The lowermost assembly sheet is available. The optical film 120, 130, 140 is formed on the non-screen area 1 of the liquid crystal panel main body 102, and is smaller than the paekage sheet. Since the optical film held by the package sheet 150 does not need to be adhered to the liquid crystal panel main body 102 or other optical film, the adhesive step is not required, and it is advantageous in the case where the number of optical films is large. Further, when the optical film is held by the package sheet 150, the optical film can be partially adhered, so that heat shrinkage and deflection can be avoided in the case of partial adhesion. As the package sheet 150, a transparent type is preferable, but a film 120, 130, 140' having a function as an optical film such as a diffusion effect can also be used as the package sheet 150. Fig. 19 shows a first embodiment. The liquid crystal panel includes optical films 120, 130, and 140 such as a liquid crystal panel main body 102 and a diffusion film, and a fastening portion 160 as a film holding member for engaging and holding the optical film with the liquid crystal panel main body 1A2. " ~ The fastening portion 160 is adhered to the peripheral edge portion of the liquid crystal panel main body 102 by the cleaning agent or the like, and is adhered to the non-face area 102b and extends toward the backlight B side. The base portion 16 is, for example, 16% of the engaging claws extending from the top end of the base portion 160a toward the center side of the liquid crystal panel. The engaging portion 160 is held in such a manner that the engaging claws 160b are hooked to the peripheral edge portions of the optical films 12A and 13A=14, so that the optical film does not fall off. The engaging portion 160 may be provided on all sides of the four non-screen areas 1〇21), or may be provided on three sides or two sides. If the engaging portion 16 is provided on all four sides, the optical film can be kept firm and reliable, and can also function as a rib for reinforcing the liquid crystal panel 102. If the engaging portion is provided on three sides or two sides, the attachment of the optical film to the engaging portion 16A is facilitated. The engaging portion 160 and the optical film are not fixed by the squeegee or the like, and are held in the engaged state, thereby avoiding the problem of thermal contraction and deflection of the optical film. Further, the engaging portion 16G and the optical __ can also be fixed by an agent or the like, but in order to avoid the problem of optical thin heat shrinkage and deflection, it is preferable that only one side of the liquid crystal panel is used. In the ninth and tenth embodiments, as a combination of the optical films, all combinations and other combinations are possible. Further, the diffusion film 12A, the lens 130, and the polarizing film 140 may each be a plurality of films such as a lens film. 13〇 preferably overlaps to 2, and the overlap can overlap to 3. For this issue. Each application is not limited to the above embodiment. In the invention of the patent scope, various modifications can be made within the scope of the description of the patents. [FIG. 1 is a cross-sectional view of the liquid crystal display device. 2 is a cross-sectional view of a liquid crystal panel. 3 is a cross-sectional view of a light diffusing substrate. Fig. 4 is a cross-sectional view showing a liquid crystal display device of a second embodiment. Fig. 5 is a plan view of the main body of the liquid crystal panel. Fig. 6 is a cross-sectional view showing a liquid crystal panel according to a third embodiment. Fig. 7 is a cross-sectional view showing another liquid crystal panel according to a third embodiment. Fig. 8 (a) to Fig. 8 (c) are views showing a liquid crystal panel according to a fourth embodiment. 9(a) to 9(d) are cross-sectional views of a liquid crystal panel according to a fifth embodiment. Fig. 2a) to Fig. 1(6) are plan views of a liquid crystal panel according to a sixth embodiment. Fig. U(a) to Fig. 11(b) are cross-sectional views showing a liquid crystal panel according to a seventh embodiment. Figures i2(a) to 12(d) are cross-sectional views of a liquid crystal panel according to an eighth embodiment. Fig. 13 (a) to Fig. 13 (4) are cross-sectional views showing another liquid crystal panel of the eighth embodiment. Fig. "(a) to Fig. 14(d) are cross-sectional views showing another liquid crystal panel of the eighth embodiment. Fig. i5(a) to Fig. 15(b) are cross sections of another liquid crystal panel 33 1320864 of the eighth embodiment. Fig. 16 (a) to Fig. 16 (d) are cross-sectional views of another liquid crystal panel according to the eighth embodiment. Fig. 17 (a) to Fig. 17 (d) are cross sections of another liquid crystal panel according to the eighth embodiment. Fig. 18 is a cross-sectional view of a liquid crystal panel according to a ninth embodiment. Fig. 19 is a cross-sectional view showing a liquid crystal panel according to a tenth embodiment. [Description of main components] 1: Liquid crystal display device 2: Liquid crystal panel 3: Light box 3a: bottom surface 3b: side surface 3c: support portion 4: light source (lamp) 5: upper case 6 liquid crystal 7: substrate (backlight side) 7a: substrate inner surface 7b: substrate outer surface 8: substrate 8a: substrate inner surface 8b: substrate outer surface 9, 10: polarizing plate 34 1320864 70: transparent plate 71: diffusing agent (light diffusing layer) 101: liquid crystal display device 102: liquid crystal panel main body 102a: screen area 102b: non-faced area 103: light box 104: light source 110: diffusion Plate 120: diffusion film 120a: film base material 120b: diffusing agent 130: lens thin (luminance rising layer) 130a: lens surface 140: polarizing film (luminance rising layer) 15 0 · package sheet (film holding member) 160 : fastening portion (film holding member) 160a : base portion 160b : fastening Claw B: Backlight 35