CN101042488A - Light-scattering film, its manufacturing method, and backlight module and display device using the same - Google Patents

Abstract

A light scattering film for direct type and embedded type backlight module, the backlight module is provided with a plurality of light sources, the light scattering film comprises: a substrate layer having two opposite faces; a diffusion layer formed on one side of the substrate layer; and an antistatic anti-adhesion layer, which has an upper surface and a lower surface, wherein the upper surface is formed on the other opposite surface of the substrate layer, and the lower surface is provided with a plurality of light path adjusting units which are arranged corresponding to the plurality of light sources, so that the light of the light sources can directly enter the antistatic anti-adhesion layer, or part of the light is scattered/reflected by the light path adjusting units and then enters the antistatic anti-adhesion layer, and then is emitted outwards through the substrate layer and the diffusion layer.

Description

Translated fromChinese

光散射膜片及其制法与使用该膜片的背光模组及显示装置Light-scattering film, its manufacturing method, and backlight module and display device using the same

【技术领域】【Technical field】

本发明是有关于一种光散射膜片及其制法以及使用该光散射膜片的显示装置，特别是关于用于例如液晶显示器的平面显示器的直下式与嵌入式背光模组的光散射膜片及其制法。The present invention relates to a light-scattering film, its manufacturing method and a display device using the light-scattering film, in particular to a light-scattering film used in direct-type and embedded backlight modules of flat-panel displays such as liquid crystal displays Tablets and their preparation.

【背景技术】【Background technique】

近年来，在显示器领域中，已逐渐以平面显示器(FlatPanel Display，FPD)取代传统体积大且笨重的阴极射线管(CRT)显示器，而其中又以具有耗电量小、全彩化、轻薄、便于携带等优点的液晶显示器(Liquid Crystal Display，LCD)为市场主流。一般是于液晶面板后方额外配置一具有光源(LightSource)的背光模组(Backlight Module)，以解决液晶本身不发光的问题。背光模组将光源发出的光线均匀的导向液晶面板，光线透过液晶面板后，将影像显示于LCD上，而得以将信息传送至使用者/观看者的眼睛。In recent years, in the field of displays, flat panel displays (FlatPanel Display, FPD) have gradually replaced the traditional large and heavy cathode ray tube (CRT) displays, and among them, it has the advantages of low power consumption, full color, thin and light, Liquid Crystal Display (LCD), which is easy to carry and other advantages, is the mainstream in the market. Generally, a backlight module (Backlight Module) with a light source (LightSource) is additionally arranged behind the liquid crystal panel to solve the problem that the liquid crystal itself does not emit light. The backlight module evenly directs the light emitted by the light source to the liquid crystal panel. After the light passes through the liquid crystal panel, the image is displayed on the LCD, so that the information can be transmitted to the eyes of the user/viewer.

习知背光模组的依照光源的位置可区分为“侧光式(EdgeLighting)”、“直下式(Direct-in Lighting)”与“嵌入式(Embedded Lighting)”，侧光式是将光源置于侧端，其具有轻、薄、窄、低耗电等特性，特别适合应用在手机、个人数字助理(PDA)、笔记本电脑中，然而，由于其导光板厚度的限制，使得放置于侧边的光源数量受限，在较大尺寸的LCD中，无法提供足够的光源，故一般仅用于18时以下的中小尺寸背光模组；直下式及嵌入式则将数个光源直接置于液晶面板的正下方，光线向上由正面射出，虽然其所需的空间较大，重量亦较重，但因为可以设置足够的光源，而具有高辉度、视角良好、光的利用效率高等优点，故一般是用在大尺寸背光模组，适用于LCD监视器与LCD电视等。Conventional backlight modules can be divided into "Edge Lighting", "Direct-in Lighting" and "Embedded Lighting" according to the position of the light source. The side end, which has the characteristics of lightness, thinness, narrowness, and low power consumption, is especially suitable for use in mobile phones, personal digital assistants (PDAs), and notebook computers. However, due to the limitation of the thickness of the light guide plate, the The number of light sources is limited. Larger-sized LCDs cannot provide enough light sources, so they are generally only used for small and medium-sized backlight modules below 18 o'clock; direct-type and embedded types place several light sources directly on the LCD panel. Directly below, the light is emitted from the front upwards. Although it requires a large space and is heavy, it is generally used because it can set up enough light sources and has the advantages of high brightness, good viewing angle, and high light utilization efficiency. Used in large-size backlight modules, suitable for LCD monitors and LCD TVs, etc.

图1显示习知的直下式背光模组，其由下至上依序配置有：反射片(Reflection Sheet)2、数个光源3、导光板(LightGuide Plate)4、扩散片1及增光片(Brightness Enhanced Film)5，此模组与反射式偏光片6及液晶面板7结合即形成LCD。于此背光模组中，光源3可为直条状或U型或其它连续弯折形状的灯管，并以适当的间隔排列设置。光线由光源3射出，藉由导光板4的导引提高辉度，再射入扩散片1，藉由其中的扩散粒子产生折射、散射作用，以将光线均匀扩散；之后，再利用一般为棱镜(prism)结构的增光片5修正光的行进方向，以光的折射与反射将光线凝聚来提高正面辉度；最后，在光线进入液晶面板7的前，进一步利用反射式偏光片6以提高正面以及大视角的亮度。设置在最下方的反射片2则藉由将经扩散片1反射至底部的光线再度反射回扩散片1，而得以增进对光源3的使用效率。Figure 1 shows a known direct-lit backlight module, which is arranged in sequence from bottom to top:Reflection Sheet 2,several light sources 3,Light Guide Plate 4,diffusion sheet 1, and Brightness Sheet. Enhanced Film) 5, this module is combined with areflective polarizer 6 and aliquid crystal panel 7 to form an LCD. In this backlight module, thelight sources 3 can be straight or U-shaped or other continuously bent lamp tubes, and are arranged at appropriate intervals. The light is emitted from thelight source 3, guided by thelight guide plate 4 to increase the luminance, and then enters thediffusion sheet 1, where the diffusing particles produce refraction and scattering to evenly diffuse the light; Thebrightness enhancement film 5 of the (prism) structure corrects the traveling direction of the light, condenses the light with the refraction and reflection of light to improve the front luminance; finally, before the light enters theliquid crystal panel 7, thereflective polarizer 6 is further used to improve the front brightness. And the brightness of the large viewing angle. Thereflection sheet 2 disposed at the bottom can improve the efficiency of thelight source 3 by reflecting the light reflected to the bottom by thediffusion sheet 1 back to thediffusion sheet 1 again.

图3显示习知的嵌入式背光模组，其由下至上依序配置有：反射片2、含数个光源82的平面光板8及扩散片1，此模组与反射式偏光片6及液晶面板7结合即形成LCD。于此背光模组中，光源82可为直条状或点状配置的发光二极管(LED)或其它形状的光源，其安置于支撑体81中，支撑体81可为玻璃或压克力板。光线由光源82射出，直接射入扩散片1，藉由其中的扩散粒子产生折射、散射作用，以将光线均匀扩散；因为这种发光方式属于直接出光，正面辉度将大为提高；最后，在光线进入液晶面板7的前，进一步利用反射式偏光片6以提高正面以及大视角的亮度。设置在最下方的反射片2则藉由将经扩散片1反射至底部的光线再度反射回扩散片1，而得以增进对光源的使用效率。Figure 3 shows a known embedded backlight module, which is configured from bottom to top: areflector 2, aflat light plate 8 containingseveral light sources 82, and adiffuser 1. This module is combined with areflective polarizer 6 and a liquid crystal. Thepanels 7 are combined to form an LCD. In this backlight module, thelight source 82 can be light emitting diodes (LEDs) or light sources of other shapes arranged in straight strips or dots, which are placed in thesupport body 81, and thesupport body 81 can be a glass or acrylic plate. The light is emitted from thelight source 82 and directly enters thediffuser 1, where the diffusing particles produce refraction and scattering to diffuse the light evenly; because this light emitting method belongs to direct light emission, the front luminance will be greatly improved; finally, Before the light enters theliquid crystal panel 7, thereflective polarizer 6 is further used to improve the brightness of the front and large viewing angles. Thereflection sheet 2 arranged at the bottom can improve the efficiency of light source by reflecting the light reflected to the bottom by thediffusion sheet 1 back to thediffusion sheet 1 again.

然而，在依照上述配置的直下式与嵌入式背光模组中，液晶面板7在正对于光源3、82的正上方处会因为光源3、82的直接出光而有较高的辉度，而液晶面板7在位于于各光源3、82的间的上方处的辉度则较暗。此种因光源配置而造成的辉度不同、进而使液晶面板7上有明暗带的情况是显示于图2。However, in the direct type and embedded backlight modules according to the above configuration, theliquid crystal panel 7 will have a higher brightness directly above thelight source 3, 82 due to the direct light output from thelight source 3, 82, while theliquid crystal panel 7 The luminance of thepanel 7 above the space between thelight sources 3 and 82 is relatively dark. The difference in luminance caused by the configuration of the light sources, and thus the situation of bright and dark bands on theliquid crystal panel 7 is shown in FIG. 2 .

目前对此问题的解决方式主要有二种：以图1为例，一为拉长光源3与导光板4、甚或扩散片1的间的距离，以降低此种明暗带现象；然而，一旦光源3与其它组件距离拉远后，除辉度即随的衰减外，背光模组的整体厚度亦随的增加，而这两种衍生的问题均违反对背光模组轻、薄、光利用率高的要求。At present, there are mainly two ways to solve this problem: Take Figure 1 as an example, one is to lengthen the distance between thelight source 3 and thelight guide plate 4, or even thediffusion sheet 1, so as to reduce the phenomenon of light and dark bands; however, once thelight source 3 After the distance from other components is extended, in addition to the immediate attenuation of luminance, the overall thickness of the backlight module also increases, and these two derived problems violate the requirements for lightness, thinness, and high light utilization of the backlight module. requirements.

另一种方式则是在导光板4上设计凹槽或其它各种纹路，或是舍弃导光板4，而直接在扩散片1加入密度分布不均的萤光物质，以期透过光的散射而减低上述的明暗带现象；但是这两种方法均因为制程的繁复而不易达成，即使技术上可行，其增加的成本也非常可观，无法于量产上施行。Another way is to design grooves or other various lines on thelight guide plate 4, or to abandon thelight guide plate 4, and directly add fluorescent substances with uneven density distribution to thediffusion sheet 1, in order to pass through the scattering of light. To reduce the above-mentioned bright and dark band phenomenon; however, these two methods are not easy to achieve due to the complexity of the manufacturing process. Even if it is technically feasible, the increased cost is very considerable and cannot be implemented in mass production.

因此，在直下式背光模组领域中，需要在不降低光学性能(如辉度、亮度等)、不增加模组厚度、且不会大幅增加成本的前提下，对上述明暗带问题找出一解决方法。本发明即满足此需求。Therefore, in the field of direct-lit backlight modules, it is necessary to find a solution to the above light and dark band problem without reducing the optical performance (such as luminance, brightness, etc.), without increasing the thickness of the module, and without greatly increasing the cost. Solution. The present invention satisfies this need.

【发明内容】【Content of invention】

本发明的一目的为提供一种用于背光模组的光散射膜片，具有反射、散射、扩散、集光、混光等效果，使得由直下式或嵌入式背光模组所射出的光线能均匀分散，不至于相对于光源设置位置而在液晶面板上形成明暗带，从而提高出光辉度。An object of the present invention is to provide a light-scattering film for a backlight module, which has the effects of reflection, scattering, diffusion, light collection, and light mixing, so that the light emitted by a direct-type or embedded backlight module can Evenly dispersed, so as not to form light and dark bands on the liquid crystal panel relative to the position of the light source, thereby improving the luminance of light.

本发明的另一目的为提供一种用于背光模组的光散射膜片的制法，上述光散射膜片具有反射、散射、扩散、集光、混光等效果，此制法可易于导入目前使用的制造流程中，具有优异的兼容性，不会导致制造成本上额外的负担。Another object of the present invention is to provide a method for making a light-scattering film used in a backlight module. The above-mentioned light-scattering film has effects such as reflection, scattering, diffusion, light collection, and light mixing. This method can be easily introduced into In the currently used manufacturing process, it has excellent compatibility and will not cause an additional burden on the manufacturing cost.

本发明的又一目的为提供一种使用上述具有反射、散射、扩散、集光、混光等效果的光散射膜片的背光模组及据此形成的显示装置，该背光模组因为采用上述光散射膜片，而得以在不增加模组体积与成本的情形下，具有良好的出光辉度与均匀度，从而使得据此形成的显示装置具较佳的显示效果。Another object of the present invention is to provide a backlight module using the above-mentioned light-scattering film with effects of reflection, scattering, diffusion, light collection, and light mixing, and a display device formed therefrom. The light-scattering film can have good luminance and uniformity without increasing the volume and cost of the module, so that the display device formed therefrom has better display effect.

依本发明的用于背光模组的光散射膜片，该背光模组设有至少一个光源，其特征在于：该光散射膜片包含有：According to the light-scattering film for a backlight module of the present invention, the backlight module is provided with at least one light source, and it is characterized in that: the light-scattering film includes:

一基材层，具有二相对面；a substrate layer having two opposite surfaces;

一扩散层，其是形成于该基材层的一面上；以及a diffusion layer formed on one side of the substrate layer; and

一抗静电防粘着层，其具有第一表面与第二表面，该第一表面是形成于该基材层的另一相对面上，第二表面具有至少一个光路径调整单元，该光路径调整单元的设置是相关于该至少一个光源的设置，An antistatic anti-adhesion layer, which has a first surface and a second surface, the first surface is formed on the other opposite surface of the substrate layer, the second surface has at least one light path adjustment unit, the light path adjustment the setting of the unit is related to the setting of the at least one light source,

藉此，该至少一个光源的光线直接进入该抗静电防粘着层或经由该至少一个光路径调整单元调整路径后再进入该抗静电防粘着层，之后再经由该基材层及扩散层向外射出。In this way, the light of the at least one light source directly enters the antistatic anti-adhesion layer or enters the antistatic anti-adhesion layer after being adjusted by the at least one light path adjustment unit, and then passes through the base material layer and the diffusion layer to the outside shoot out.

依本发明的一种前述用于直下式与嵌入式背光模组的光散射膜片的制法，其步骤包含有：提供一充作基材层的透明或半透明层；于该透明或半透明层的二相对面上分别形成一扩散层及一具有第一表面与第二表面的抗静电防粘着层，该抗静电防粘着层的第一表面是与该透明或半透明层接合；以及于该抗静电防粘着层的第二表面形成至少一个光路径调整单元。According to a method for preparing a light-scattering film for direct-type and embedded backlight modules according to the present invention, the steps include: providing a transparent or translucent layer as a substrate layer; A diffusion layer and an antistatic anti-adhesion layer having a first surface and a second surface are respectively formed on two opposite surfaces of the transparent layer, the first surface of the antistatic anti-adhesion layer is bonded to the transparent or translucent layer; and At least one light path adjustment unit is formed on the second surface of the antistatic anti-adhesion layer.

依本发明的又一态样，一种背光模组，其是使用前述光散射膜片。According to another aspect of the present invention, a backlight module uses the aforementioned light-scattering film.

依本发明的再一态样，一种显示装置，其设有使用前述光散射膜片的背光模组。According to yet another aspect of the present invention, a display device is provided with a backlight module using the aforementioned light-scattering film.

本发明的一种用于背光模组的光散射膜片，具有反射、散射、扩散、集光、混光等效果，使得由直下式或嵌入式背光模组所射出的光线能均匀分散，不至于相对于光源设置位置而在液晶面板上形成明暗带，从而提高出光辉度。A light-scattering film for a backlight module of the present invention has the effects of reflection, scattering, diffusion, light collection, and light mixing, so that the light emitted by the direct-type or embedded backlight module can be evenly dispersed without As for the light and dark bands are formed on the liquid crystal panel relative to the position of the light source, so as to improve the luminance of light.

本发明的用于背光模组的光散射膜片的制法，此制法可易于导入目前使用的制造流程中，具有优异的兼容性，不会导致制造成本上额外的负担。The manufacturing method of the light-scattering film used in the backlight module of the present invention can be easily introduced into the currently used manufacturing process, has excellent compatibility, and will not cause additional burden on the manufacturing cost.

本发明的使用上述具有反射、散射、扩散、集光、混光等效果的光散射膜片的背光模组及据此形成的显示装置，该背光模组因为采用上述光散射膜片，而得以在不增加模组体积与成本的情形下，具有良好的出光辉度与均匀度，从而使得据此形成的显示装置具较佳的显示效果。The backlight module of the present invention using the above-mentioned light-scattering film having the effects of reflection, scattering, diffusion, light collection, and light mixing and the display device formed therefrom, the backlight module can be obtained by using the above-mentioned light-scattering film Without increasing the volume and cost of the module, it has good luminance and uniformity, so that the display device formed therefrom has better display effect.

【附图说明】【Description of drawings】

于所有图式中使用同样的标号以标示相同或类似的特征。这些图式并未按照比例绘制，且其仅是供阐示目的之用。The same reference numbers are used throughout the drawings to identify the same or similar features. The drawings are not drawn to scale and are for illustration purposes only.

图1为习知的直下式背光模组的示意结构图。FIG. 1 is a schematic structural diagram of a conventional direct-lit backlight module.

图2为图1的光源相对位置与出光面亮度关是坐标图。FIG. 2 is a coordinate diagram of the relationship between the relative position of the light source and the brightness of the light-emitting surface in FIG. 1 .

图3为习知的嵌入式背光模组的示意结构图。FIG. 3 is a schematic structural diagram of a conventional embedded backlight module.

图4为根据本发明的一实施例的光散射膜片的示意结构图。FIG. 4 is a schematic structural diagram of a light-scattering film according to an embodiment of the present invention.

图5为根据本发明的一实施例的光散射膜片所设置的光路径调整单元的示意剖面图。5 is a schematic cross-sectional view of a light path adjusting unit provided with a light scattering film according to an embodiment of the present invention.

图6为使用根据本发明的一实施例的光散射膜片的直下式背光模组的示意结构图。FIG. 6 is a schematic structural diagram of a direct-lit backlight module using a light-scattering film according to an embodiment of the present invention.

图7为使用根据本发明的一实施例的光散射膜片的嵌入式背光模组的示意结构图。FIG. 7 is a schematic structural view of an embedded backlight module using a light-scattering film according to an embodiment of the present invention.

【具体实施方式】【Detailed ways】

本发明的用于直下式与嵌入式背光模组的光散射膜片主要包含一基材层、一扩散层及一抗静电防粘着层，该扩散层形成于该基材层的一面上，该抗静电防粘着层的一表面形成于该基材层的另一面上，该抗静电防粘着层的另一表面则具有至少一个光路径调整单元，其设置主要是对应于背光模组所使用的至少一个光源的设置。运作中，模组中的至少一个光源射出的光线，可直接进入抗静电防粘着层，或经由光路径调整单元将部分光线散射后再进入抗静电防粘着层，之后再经由基材层及扩散层射出，使得射出的光线能均匀分散。The light-scattering film for direct-type and embedded backlight modules of the present invention mainly includes a base material layer, a diffusion layer and an antistatic anti-adhesion layer, the diffusion layer is formed on one side of the base material layer, the One surface of the antistatic anti-adhesion layer is formed on the other surface of the substrate layer, and the other surface of the antistatic anti-adhesion layer has at least one light path adjustment unit, which is mainly arranged corresponding to the backlight module. Settings for at least one light source. During operation, the light emitted by at least one light source in the module can directly enter the antistatic anti-adhesion layer, or part of the light can be scattered by the light path adjustment unit and then enter the antistatic anti-adhesion layer, and then pass through the substrate layer and diffuse The layer is emitted, so that the emitted light can be evenly dispersed.

该基材层可由包含但不仅限于聚对苯二甲酸乙二酯(PET)的高分子薄膜材料形成；该扩散层可由包含但不仅限于聚苯甲基丙烯酸丁酯(PMBA)等高分子树脂材料形成，能产生细致的表面粗糙度而提供均匀的光扩散效果，并具有集光功能(即提高光学辉度)；该抗静电防粘着层可由包含但不仅限于聚甲基丙烯酸甲酯(PMMA)等高分子树脂材料形成，能于模组组装过程中避免污物粘着；该光路径调整单元可为包含但不限于由抗紫外线油墨形成的印刷网点。The substrate layer can be formed by polymer film materials including but not limited to polyethylene terephthalate (PET); the diffusion layer can be made of polymer resin materials including but not limited to polyphenylmethacrylate (PMBA). Formed, can produce fine surface roughness to provide a uniform light diffusion effect, and has a light-collecting function (that is, to improve optical brightness); the antistatic anti-adhesion layer can be composed of polymethylmethacrylate (PMMA) It is formed of polymer resin materials such as polymer resin, which can prevent dirt from sticking during the module assembly process; the light path adjustment unit can include but not limited to printing dots formed by UV-resistant ink.

请参阅图4，其揭示本发明的一种用于背光模组的光散射膜片1’的一较佳实施例，该光散射膜片1’包含有一基材层10、一扩散层11与一抗静电防粘着层12，该扩散层11是形成于该基材层10的一面上，而该抗静电防粘着层12则形成于该基材层10的另一面上。该抗静电防粘着层12上表面与该基材层10接合，下表面则具有数个光路径调整单元123。Please refer to FIG. 4, which discloses a preferred embodiment of a light-scattering film 1' for a backlight module of the present invention. The light-scattering film 1' includes asubstrate layer 10, adiffusion layer 11 and Anantistatic anti-adhesion layer 12 , thediffusion layer 11 is formed on one side of thesubstrate layer 10 , and theantistatic anti-adhesion layer 12 is formed on the other surface of thesubstrate layer 10 . The upper surface of the antistatic andanti-adhesion layer 12 is bonded to thesubstrate layer 10 , and the lower surface has several lightpath adjustment units 123 .

在此实施例中，基材层10的材料可为透明或半透明的树脂膜，其较佳为选自聚对苯二甲酸乙二酯(PET)、三乙酸纤维素(TAC)、聚萘甲酸乙二酯(PEN)、聚丙二酯、聚酰亚胺、聚醚、聚碳酸酯、聚胺、聚乙烯、聚丙烯或聚乙烯醇等等或其等效物。该树脂膜的厚度较佳为25至300微米(μm)，更佳为50至200微米。In this embodiment, the material of thesubstrate layer 10 can be a transparent or translucent resin film, which is preferably selected from polyethylene terephthalate (PET), cellulose triacetate (TAC), polynaphthalene Ethylene formate (PEN), polypropylene, polyimide, polyether, polycarbonate, polyamine, polyethylene, polypropylene or polyvinyl alcohol, etc. or their equivalents. The thickness of the resin film is preferably 25 to 300 microns (μm), more preferably 50 to 200 microns.

扩散层11包含主要由有机透光散射粒子112与无机微小粒子113组成的数个扩散粒子，并包含粘着物111，将该数个扩散粒子固着至基材层10上。Thediffusion layer 11 includes a plurality of diffusion particles mainly composed of organic light-transmitting scattering particles 112 and inorganic micro-particles 113 , and includes an adhesive 111 for affixing the plurality of diffusion particles to thesubstrate layer 10 .

粘着物111的材料可为热可塑型高分子树脂，其较佳为选自(甲基)丙烯酸酯((meth)acrylate)的单独或聚合体、聚酯(polyester)、聚碳酸酯(polycarbonate)、聚苯乙烯(polystyrene)或聚甲基戊烯(polymethyl pentene)等等或其等效物。而其中该(甲基)丙烯酸酯的单独或聚合体较佳为选自聚(甲基)丙烯酸甲酯(polymethyl(meth)acrylate)或聚(甲基)丙烯酸乙酯(polyethyl(meth)acrylate)等，该聚酯较佳为聚乙烯对苯二甲酯(polyethylene terephthalate)或聚丙烯对苯二甲酯(polypropyrene terephthalates)等。粘着物111在该扩散层11内的重量百分比(weight％)的比例可为10重量百分比至90重量百分比，较佳为40重量百分比至80重量百分比。The material of the adhesive 111 can be a thermoplastic polymer resin, which is preferably selected from (meth)acrylate (meth)acrylate alone or polymer, polyester (polyester), polycarbonate (polycarbonate) , polystyrene (polystyrene) or polymethylpentene (polymethyl pentene), etc. or their equivalents. Wherein the (meth)acrylate alone or polymer is preferably selected from poly(meth)acrylate (polymethyl(meth)acrylate) or poly(meth)acrylate (polyethyl(meth)acrylate) etc., the polyester is preferably polyethylene terephthalate (polyethylene terephthalate) or polypropylene terephthalate (polypropylene terephthalates) and the like. The weight percent (weight%) of the adhesive 111 in thediffusion layer 11 may be 10 weight percent to 90 weight percent, preferably 40 weight percent to 80 weight percent.

有机透光散射粒子112较佳为选自聚甲基丙烯酸甲酯(PMMA)、聚苯甲基丙烯酸丁酯(polymethoxy benzyl acetate，PMBA)或聚氯乙烯(PVC)等等或其等效物。有机透光散射粒子112在扩散层11内的重量百分比的比例可为10重量百分比至90重量百分比，较佳为40重量百分比至80重量百分比。The organic light-transmitting scattering particles 112 are preferably selected from polymethyl methacrylate (PMMA), polymethoxy benzyl acetate (PMBA), polyvinyl chloride (PVC), etc. or their equivalents. The weight percent of the organic light-transmitting scattering particles 112 in thediffusion layer 11 may be 10 weight percent to 90 weight percent, preferably 40 weight percent to 80 weight percent.

无机微小粒子113较佳为选自SiO₂、Al₂O₃或硅胶(silicon)等等或其等效物。无机微小粒子113在扩散层11内的重量百分比的比例可为30重量百分比至90重量百分比，较佳为40重量百分比至90重量百分比。The inorganic fine particles 113 are preferably selected from SiO₂ , Al₂ O₃ , silica gel (silicon), etc. or their equivalents. The weight percent ratio of the inorganic fine particles 113 in thediffusion layer 11 may be 30 weight percent to 90 weight percent, preferably 40 weight percent to 90 weight percent.

在本实施例中，粘着物111可由聚(甲基)丙烯酸甲酯相对于扩散层11为10重量百分比至30重量百分比、聚乙烯对苯二甲酯相对于扩散层11为10重量百分比至30重量百分比所组成；有机透光散射粒子112可由PMMA相对于扩散层11为15重量百分比至40重量百分比、PMBA相对于扩散层11为10重量百分比至30重量百分比所组成；无机微小粒子113可由SiO₂相对于扩散层11为10重量百分比至40重量百分比、硅胶相对于扩散层11为10重量百分比至30重量百分比所组成。扩散层11的厚度范围较佳为15至40微米。In this embodiment, the adhesive 111 can be made of poly(methyl)acrylate with a ratio of 10 weight percent to 30 weight percent relative to thediffusion layer 11, and polyethylene terephthalate with a ratio of 10 weight percent to 30 weight percent with respect to thediffusion layer 11. The organic light-transmitting scattering particles 112 can be composed of 15 weight percent to 40 weight percent of PMMA relative to thediffusion layer 11, and 10 weight percent to 30 weight percent of PMBA relative to thediffusion layer 11; the inorganic tiny particles 113 can be made of SiO₂ is composed of 10% to 40% by weight relative to thediffusion layer 11, and 10% to 30% by weight of silica gel relative to thediffusion layer 11. The thickness of thediffusion layer 11 is preferably in the range of 15 to 40 microns.

抗静电防粘着层12的结构与扩散层11基本上近似，其包含主要由有机透光散射粒子122组成的数个扩散粒子，并包含粘着物121，将该数个扩散粒子固着至基材层10上。不同处在于扩散粒子与粘着物的比例、抗静电防粘着层12的厚度以及在抗静电防粘着层12下表面上的光路径调整单元123，且抗静电防粘着层12是形成为使得其中的扩散粒子凸出于粘着物121的表面，从而抗静电防粘着层12与其它组件接触时，仅于凸出的扩散粒子处形成接触，其它部分则会形成间隙，故可达成抗静电防粘着目的。The structure of theantistatic anti-adhesion layer 12 is basically similar to that of thediffusion layer 11, and it includes several diffusion particles mainly composed of organic light-transmittingscattering particles 122, and includes an adhesive 121, which fixes the several diffusion particles to thesubstrate layer 10 on. The difference lies in the ratio of diffusing particles and stickies, the thickness of the antistaticanti-adhesive layer 12, and the lightpath adjustment unit 123 on the lower surface of the antistaticanti-adhesive layer 12, and the antistaticanti-adhesive layer 12 is formed such that the The diffusion particles protrude from the surface of the adhesive 121, so that when theantistatic anti-adhesion layer 12 is in contact with other components, only the protruding diffusion particles will form contact, and other parts will form gaps, so the purpose of antistatic anti-adhesion can be achieved .

于抗静电防粘着层12中，粘着物121的重量百分比(weight％)的比例可为60重量百分比至95重量百分比，较佳为70重量百分比至90重量百分比，有机透光散射粒子122的重量百分比的比例可为5重量百分比至40重量百分比，较佳为10重量百分比至30重量百分比。In theantistatic anti-adhesion layer 12, the weight percent (weight%) ratio of the adhesive 121 can be 60 weight percent to 95 weight percent, preferably 70 weight percent to 90 weight percent, the weight of the organic light-transmittingscattering particles 122 The ratio of the percentage may be 5% by weight to 40% by weight, preferably 10% by weight to 30% by weight.

在本实施例中，粘着物121可由聚(甲基)丙烯酸甲酯相对于抗静电防粘着层12为10重量百分比至70重量百分比、聚乙烯对苯二甲酯相对于抗静电防粘着层12为10重量百分比至50重量百分比所组成；有机透光散射粒子122可由PMMA相对于抗静电防粘着层12为10重量百分比至30重量百分比所组成。抗静电防粘着层12的厚度范围较佳为10至25微米。In this embodiment, the adhesive 121 can be made of poly(meth)acrylate relative to the antistaticanti-adhesive layer 12 at 10% by weight to 70% by weight, polyethylene terephthalate relative to the antistaticanti-adhesive layer 12 It is composed of 10% by weight to 50% by weight; the organic light-transmittingscattering particles 122 can be composed of PMMA relative to theantistatic anti-adhesion layer 12 by 10% by weight to 30% by weight. The thickness of theantistatic anti-adhesion layer 12 is preferably in the range of 10 to 25 microns.

光路径调整单元123主要是对应于背光模组的光源空间分布而设置在抗静电防粘着层12的下表面上。该空间分布乃为根据使用本光散射膜片1’的背光模组的光源配置而得，以直下式背光模组为例(参图1)，可先将光源3以适当间隔排列于反射片2与导光板4的间后，再将光源3经由导光板4透射的影像以电荷耦合组件(Charge Coupled Device，CCD)或色度分光计(Chroma Spectrometer)高分辨率曝光摄相，从而得到有明暗区域的空间分布图，即辉度空间分布图，再以计算机软件(诸如PhotoShop等等)转换镜射图档，进而设计光路径调整单元123的配置图，之后可利用但不仅限于下列方式依此配置图将光路径调整单元123形成于抗静电防粘着层12的下表面上：The lightpath adjustment unit 123 is mainly disposed on the lower surface of theantistatic anti-adhesion layer 12 corresponding to the spatial distribution of light sources of the backlight module. The spatial distribution is based on the configuration of the light sources of the backlight module using the light-scattering film 1'. Taking the direct-type backlight module as an example (see Figure 1), thelight sources 3 can be arranged on the reflector at appropriate intervals. 2 and thelight guide plate 4, the image transmitted by thelight source 3 through thelight guide plate 4 is exposed and photographed with a high-resolution charge coupled device (Charge Coupled Device, CCD) or a chroma spectrometer (Chroma Spectrometer), so as to obtain a The spatial distribution map of the bright and dark areas, i.e. the luminance spatial distribution map, is converted to the mirror image file by computer software (such as PhotoShop, etc.), and then the configuration map of the lightpath adjustment unit 123 is designed, and then the following methods can be used, but not limited to: This configuration diagram forms the lightpath adjustment unit 123 on the lower surface of the antistatic anti-adhesion layer 12:

方式一：以抗紫外线油墨实施网点印刷(dot printing)来形成不透明或部分透明的光路径调整单元123，如图4所示；Mode 1: implement dot printing (dot printing) with UV-resistant ink to form an opaque or partially transparent lightpath adjustment unit 123, as shown in FIG. 4 ;

方式二：以包含但不仅限于聚碳酸酯(PC)的半透明材料，经由涂布(coating)、真空蒸镀或离子溅镀等等加工方式，形成不同表面形状的光路径调整单元123，如图5所示，表面形状可为不规则V形的光路径调整单元1231，或不规则R形的光路径调整单元1232；Method 2: Use translucent materials including but not limited to polycarbonate (PC) to form opticalpath adjustment units 123 with different surface shapes through coating, vacuum evaporation or ion sputtering, etc., such as As shown in Figure 5, the surface shape can be an irregular V-shaped opticalpath adjustment unit 1231, or an irregular R-shaped opticalpath adjustment unit 1232;

方式三：结合前述方式一及方式二来形成光路径调整单元123。Mode 3: Form the opticalpath adjustment unit 123 in combination with the foregoingmodes 1 and 2 .

可利用下列方法形成一种如前述实施例的光散射膜片1’。首先，将一充作该基材层10的透明基材装入一暂存箱中，以超音波震动并加热以清洁该基材层10，接着将其架于一涂布机台上，再将构成该扩散层11的配方装入该涂布机台中，激活机台将配方涂布于该透明基材的一面上；接着，将涂布完成后的半成品置放于恒温恒湿式烘箱中，以温度75℃至125℃进行干燥约1至15分钟，并于确认其厚度、特性符合所需之后，再对该基材层10的另一面重复前述步骤，亦即，将其架于涂布机台上，将构成该抗静电防粘着层12的配方装入该涂布机台中，将配方涂布于该透明基材的另一面上，所形成的该抗静电防粘着层12具有二表面，其上表面是与该透明基材相接，而其下表面则供之后设置光路径调整单元123之用；然后将此光散射膜片半成品置于恒温恒湿式烘箱内加以干燥并确认其厚度、特性符合所需。上述的涂布步骤亦可以静电喷涂取代。A light-scattering film 1' as in the foregoing embodiment can be formed by the following method. First, a transparent base material used as thebase material layer 10 is packed into a temporary storage box, ultrasonically vibrated and heated to clean thebase material layer 10, and then placed on a coating machine table, and then Put the formula constituting thediffusion layer 11 into the coating machine, activate the machine to coat the formula on one side of the transparent substrate; then, place the coated semi-finished product in a constant temperature and humidity oven , drying at a temperature of 75°C to 125°C for about 1 to 15 minutes, and after confirming that its thickness and characteristics meet the requirements, repeat the above steps on the other side of thesubstrate layer 10, that is, put it on the coating On the cloth machine platform, the formula constituting theantistatic anti-adhesion layer 12 is loaded into the coating machine platform, and the formula is coated on the other side of the transparent substrate, and the formedantistatic anti-adhesion layer 12 has two surface, its upper surface is in contact with the transparent substrate, and its lower surface is used for setting the lightpath adjustment unit 123; then the semi-finished light scattering film is placed in a constant temperature and humidity oven to dry and confirm Its thickness and characteristics meet the requirements. The above coating steps can also be replaced by electrostatic spraying.

随后，以印刷方式将抗紫外线油墨依所欲配置图印制于此半成品的抗静电防粘着层12的下表面上，形成由多个印刷网点构成的光路径调整单元123。Subsequently, the anti-ultraviolet ink is printed on the lower surface of the antistatic andanti-adhesion layer 12 of the semi-finished product according to the desired layout by printing to form the lightpath adjustment unit 123 composed of a plurality of printing dots.

最后，再将此光学膜片置于紫外线(UV)干燥机中，以温度250℃至500℃进行干燥。所得的成品即为如前述实施例的光散射膜片1’。Finally, the optical film is placed in an ultraviolet (UV) dryer and dried at a temperature of 250°C to 500°C. The resulting finished product is the light-scattering film 1' of the aforementioned embodiment.

根据本发明所形成的光散射膜片1’可直接取代习知的扩散片(如图1的扩散片1)并用于各种习知显示装置的背光模组，例如图1、3所示的习知液晶显示装置的直下式与嵌入式背光模组，无须对该等背光模组进行额外的修正。一例示性的实施例如图6所示，其显示将本发明的光散射膜片1’直接应用于具有光源3的直下式背光模组中，于运作中，光源3射出的光线(如实线所示)可直接进入抗静电防粘着层12，或者光源3射出的光线(如虚线所示)可经由光路径调整单元123将部分光线散射/反射后再折射进入抗静电防粘着层12，之后再经由基材层10及扩散层11射出，使得射出的光线不但能均匀分散，且能提高出光辉度。另一例示性的实施例如图7所示，其显示将本发明的光散射膜片1’直接应用于具有光源82的嵌入式背光模组中，其运作方式类同于图6，其中另显示经由光路径调整单元123散射/反射的部分光线可于支撑体81表面散射/反射后再进入抗静电防粘着层12。The light-scattering film 1' formed according to the present invention can directly replace the known diffusion sheet (such as thediffusion sheet 1 in Figure 1) and be used in backlight modules of various conventional display devices, such as those shown in Figures 1 and 3 Conventional direct type and embedded backlight modules of liquid crystal display devices do not require additional modification to these backlight modules. An exemplary embodiment is shown in FIG. 6, which shows that the light-scattering film 1' of the present invention is directly applied to a direct-lit backlight module with alight source 3. During operation, the light emitted by the light source 3 (as indicated by the solid line) shown) can directly enter theantistatic anti-adhesion layer 12, or the light emitted by the light source 3 (as shown by the dotted line) can be partly scattered/reflected by the lightpath adjustment unit 123 and then refracted into theantistatic anti-adhesion layer 12, and then The emitted light is emitted through thesubstrate layer 10 and thediffusion layer 11 , so that the emitted light can not only be uniformly dispersed, but also increase the brightness of the emitted light. Another exemplary embodiment is shown in FIG. 7, which shows that the light-scattering film 1' of the present invention is directly applied to an embedded backlight module with alight source 82, and its operation mode is similar to that in FIG. 6, which is also shown Part of the light scattered/reflected by the lightpath adjustment unit 123 can be scattered/reflected on the surface of thesupport body 81 and then enter the antistatic andanti-adhesion layer 12 .

经实际测试显示，使用本发明的光散射膜片的显示装置的背光模组，可在不增加厚度、制程复杂度或成本的情形下，达到射出光线亮度均匀化并显著提高出光辉度的目的。The actual test shows that the backlight module of the display device using the light-scattering film of the present invention can achieve the purpose of uniforming the brightness of the emitted light and significantly improving the brightness of the emitted light without increasing the thickness, process complexity or cost. .

本发明已参照例示性实施例作详细说明，然而本说明并不意欲以限制性方式阐示。熟悉此项技艺人士在参照说明后，应可清楚理解例示性实施例的各种修正及结合、以及本发明的其它实施例。因此，任何此等修正或实施例均应属于本发明的保护范围。The present invention has been described in detail with reference to exemplary embodiments, however, this description is not intended to be construed in a restrictive manner. Various modifications and combinations of the exemplary embodiments, as well as other embodiments of the invention, will be apparent to those skilled in the art upon reference to the description. Therefore, any such amendments or embodiments shall belong to the protection scope of the present invention.

【组件符号说明】【Description of component symbols】

1：扩散片1: Diffuser

1’：光散射膜片1': Light-scattering film

2：反射片2: reflector

3：光源3: light source

4：导光板4: Light guide plate

5：增光片5: Enhancement film

6：反射式偏光片6: reflective polarizer

7：液晶面板7: LCD panel

8：平面光板8: flat light board

10：基材层10: Substrate layer

11：扩散层11: Diffusion layer

12：抗静电防粘着层12: Antistatic anti-adhesion layer

81：支撑体81: Support body

82：光源82: light source

111：粘着物111: Stickies

112：有机透光散射粒子112: Organic light-transmitting scattering particles

113：无机微小粒子113: Inorganic tiny particles

121：粘着物121: Stickies

122：有机透光散射粒子122: Organic light-transmitting scattering particles

123：光路径调整单元123: Optical path adjustment unit

1231：V形光路径调整单元1231: V-shaped light path adjustment unit

1232：R形光路径调整单元1232: R-shaped optical path adjustment unit

Claims (70)

Translated fromChinese

1.一种用于背光模组的光散射膜片，该背光模组设有至少一个光源，其特征在于：该光散射膜片包含有：1. A light-scattering diaphragm for a backlight module, the backlight module is provided with at least one light source, characterized in that: the light-scattering diaphragm includes:一基材层，具有二相对面；a substrate layer having two opposite surfaces;一扩散层，其是形成于该基材层的一面上；以及a diffusion layer formed on one side of the substrate layer; and一抗静电防粘着层，其具有第一表面与第二表面，该第一表面是形成于该基材层的另一相对面上，第二表面具有至少一个光路径调整单元，该光路径调整单元的设置是相关于该至少一个光源的设置，An antistatic anti-adhesion layer, which has a first surface and a second surface, the first surface is formed on the other opposite surface of the substrate layer, the second surface has at least one light path adjustment unit, the light path adjustment the setting of the unit is related to the setting of the at least one light source,藉此，该至少一个光源的光线直接进入该抗静电防粘着层或经由该至少一个光路径调整单元调整路径后再进入该抗静电防粘着层，之后再经由该基材层及扩散层向外射出。In this way, the light of the at least one light source directly enters the antistatic anti-adhesion layer or enters the antistatic anti-adhesion layer after being adjusted by the at least one light path adjustment unit, and then passes through the base material layer and the diffusion layer to the outside shoot out.2.如权利要求1所述的用于背光模组的光散射膜片，其特征在于：该基材层是由一透明或半透明层构成。2. The light-scattering film used in a backlight module as claimed in claim 1, wherein the substrate layer is composed of a transparent or translucent layer.3.如权利要求2所述的用于背光模组的光散射膜片，其特征在于：该透明或半透明层的材料为树脂膜。3. The light-scattering film used in a backlight module as claimed in claim 2, wherein the material of the transparent or translucent layer is a resin film.4.如权利要求3所述的用于背光模组的光散射膜片，其特征在于：该树脂膜选自聚对苯二甲酸乙二酯、三乙酸纤维素、聚萘甲酸乙二酯、聚丙二酯、聚酰亚胺、聚醚、聚碳酸酯、聚胺、聚乙烯、聚丙烯或聚乙烯醇。4. The light-scattering film for a backlight module as claimed in claim 3, wherein the resin film is selected from the group consisting of polyethylene terephthalate, cellulose triacetate, polyethylene naphthalate, Polypropylene glycol, polyimide, polyether, polycarbonate, polyamine, polyethylene, polypropylene or polyvinyl alcohol.5.如权利要求1所述的用于背光模组的光散射膜片，其特征在于：该基材层的厚度为25至300微米。5 . The light-diffusing film used in a backlight module as claimed in claim 1 , wherein the substrate layer has a thickness of 25 to 300 microns.6.如权利要求5所述的用于背光模组的光散射膜片，其特征在于：该基材层的厚度为50至200微米。6 . The light-diffusing film used in a backlight module as claimed in claim 5 , wherein the thickness of the substrate layer is 50 to 200 microns.7.如权利要求1所述的用于背光模组的光散射膜片，其特征在于：该扩散层与抗静电防粘着层包括：7. The light-scattering film for a backlight module as claimed in claim 1, wherein the diffusion layer and the antistatic anti-adhesion layer comprise:数个扩散粒子；以及a number of diffuse particles; and粘着物，用以将该数个扩散粒子固着至基材层。Adhesives are used to fix the plurality of diffusion particles to the substrate layer.8.如权利要求7所述的用于背光模组的光散射膜片，其特征在于：该粘着物的材料为热可塑型高分子树脂。8. The light-scattering film used in a backlight module as claimed in claim 7, wherein the adhesive is made of thermoplastic polymer resin.9.如权利要求8所述的用于背光模组的光散射膜片，其特征在于：该热可塑型高分子树脂可选自(甲基)丙烯酸酯的单独或聚合体、聚酯、聚碳酸酯、聚苯乙烯或聚甲基戊烯。9. The light-scattering film for backlight module as claimed in claim 8, characterized in that: the thermoplastic polymer resin can be selected from (meth)acrylate alone or polymer, polyester, polyester Carbonate, polystyrene or polymethylpentene.10.如权利要求9所述的用于背光模组的光散射膜片，其特征在于：该(甲基)丙烯酸酯的单独或聚合体可选自聚(甲基)丙烯酸甲酯或聚(甲基)丙烯酸乙酯。10. The light-scattering film for backlight module as claimed in claim 9, characterized in that: the (meth)acrylate alone or polymer can be selected from polymethyl (meth)acrylate or poly( Ethyl meth)acrylate.11.如权利要求9所述的用于背光模组的光散射膜片，其特征在于：该聚酯可为聚乙烯对苯二甲酯或聚丙烯对苯二甲酯。11. The light-diffusing film for a backlight module as claimed in claim 9, wherein the polyester is polyethylene terephthalate or polypropylene terephthalate.12.如权利要求7所述的用于背光模组的光散射膜片，其特征在于：该粘着物在该扩散层内的重量百分比为10％至90％。12. The light-diffusing film used in a backlight module as claimed in claim 7, wherein the weight percentage of the adhesive in the diffusion layer is 10% to 90%.13.如权利要求12所述的用于背光模组的光散射膜片，其特征在于：该粘着物在该扩散层内的重量百分比为40％至80％。13. The light-diffusing film used in a backlight module as claimed in claim 12, wherein the weight percentage of the adhesive in the diffusion layer is 40% to 80%.14.如权利要求10所述的用于背光模组的光散射膜片，其特征在于：聚(甲基)丙烯酸甲酯在该扩散层内的重量百分比为10％至30％。14. The light-diffusing film for a backlight module as claimed in claim 10, wherein the weight percentage of polymethyl (meth)acrylate in the diffusion layer is 10% to 30%.15.如权利要求11所述的用于背光模组的光散射膜片，其特征在于：聚乙烯对苯二甲酯在该扩散层内的重量百分比为10％至30％。15. The light-diffusing film for a backlight module as claimed in claim 11, wherein the weight percentage of polyethylene terephthalate in the diffusion layer is 10% to 30%.16.如权利要求7所述的用于背光模组的光散射膜片，其特征在于：供该扩散层的扩散粒子包含有机扩散粒子及无机扩散粒子，且供该抗静电防粘着层的扩散粒子包含有机扩散粒子。16. The light-scattering film for a backlight module as claimed in claim 7, wherein the diffusion particles for the diffusion layer include organic diffusion particles and inorganic diffusion particles, and are used for the diffusion of the antistatic and anti-adhesion layer. The particles comprise organic diffusing particles.17.如权利要求16所述的用于背光模组的光散射膜片，其特征在于：该有机扩散粒子的材料选自聚甲基丙烯酸甲酯、聚苯甲基丙烯酸丁酯或聚氯乙烯。17. The light-scattering film for a backlight module as claimed in claim 16, wherein the material of the organic diffusion particles is selected from polymethyl methacrylate, polyphenyl butyl acrylate or polyvinyl chloride .18.如权利要求16所述的用于背光模组的光散射膜片，其特征在于：该无机扩散粒子的材料可选自SiO₂、Al₂O₃或硅胶。18. The light-scattering film for a backlight module as claimed in claim 16, wherein the material of the inorganic diffusion particles can be selected from SiO₂ , Al₂ O₃ or silica gel.19.如权利要求16所述的用于背光模组的光散射膜片，其特征在于：该有机扩散粒子在该扩散层内的重量百分比为10％至90％。19. The light-scattering film for a backlight module as claimed in claim 16, wherein the weight percentage of the organic diffusion particles in the diffusion layer is 10% to 90%.20.如权利要求19所述的用于背光模组的光散射膜片，其特征在于：该有机扩散粒子在该扩散层内的重量百分比为40％至80％。20. The light-scattering film for a backlight module as claimed in claim 19, wherein the weight percentage of the organic diffusion particles in the diffusion layer is 40% to 80%.21.如权利要求16所述的用于背光模组的光散射膜片，其特征在于：该无机扩散粒子在该扩散层内的重量百分比为30％至90％。21. The light-scattering film used in a backlight module as claimed in claim 16, wherein the weight percentage of the inorganic diffusion particles in the diffusion layer is 30% to 90%.22.如权利要求21所述的用于背光模组的光散射膜片，其特征在于：该无机扩散粒子在该扩散层内的重量百分比为40％至90％。22. The light-scattering film for a backlight module as claimed in claim 21, wherein the weight percentage of the inorganic diffusion particles in the diffusion layer is 40% to 90%.23.如权利要求17所述的用于背光模组的光散射膜片，其特征在于：聚甲基丙烯酸甲酯在该扩散层内的重量百分比为15％至40％，且聚苯甲基丙烯酸丁酯在该扩散层内的重量百分比为10％至30％。23. The light-scattering film for a backlight module as claimed in claim 17, wherein the weight percentage of polymethyl methacrylate in the diffusion layer is 15% to 40%, and polybenzyl The weight percent of butyl acrylate in the diffusion layer is 10% to 30%.24.如权利要求18所述的用于背光模组的光散射膜片，其特征在于：SiO₂在该扩散层内的重量百分比为10％至40％，且硅胶在该扩散层内的重量百分比为10％至30％。24. The light-scattering film for a backlight module as claimed in claim 18, wherein the weight percentage of_SiO2 in the diffusion layer is 10% to 40%, and the weight percentage of silica gel in the diffusion layer is The percentage is 10% to 30%.25.如权利要求1所述的用于背光模组的光散射膜片，其特征在于：该扩散层的厚度为15至40微米。25. The light-diffusing film used in a backlight module as claimed in claim 1, wherein the thickness of the diffusion layer is 15-40 microns.26.如权利要求7所述的用于背光模组的光散射膜片，其特征在于：该粘着物在该抗静电防粘着层内的重量百分比为60％至95％。26. The light-scattering film used in a backlight module as claimed in claim 7, wherein the weight percentage of the adhesive in the antistatic anti-adhesion layer is 60% to 95%.27.如权利要求26所述的用于背光模组的光散射膜片，其特征在于：该粘着物在该抗静电防粘着层内的重量百分比为70％至90％。27. The light-diffusing film used in a backlight module as claimed in claim 26, wherein the weight percentage of the adhesive in the antistatic and anti-adhesive layer is 70% to 90%.28.如权利要求10所述的用于背光模组的光散射膜片，其特征在于：聚(甲基)丙烯酸甲酯在该抗静电防粘着层内的重量百分比为10％至70％。28. The light-scattering film for a backlight module as claimed in claim 10, wherein the weight percentage of polymethyl (meth)acrylate in the antistatic anti-adhesion layer is 10% to 70%.29.如权利要求11所述的用于背光模组的光散射膜片，其特征在于：聚乙烯对苯二甲酯在该抗静电防粘着层内的重量百分比为10％至50％。29. The light-scattering film used in a backlight module as claimed in claim 11, wherein the weight percentage of polyethylene terephthalate in the antistatic anti-adhesion layer is 10% to 50%.30.如权利要求16所述的用于背光模组的光散射膜片，其特征在于：该有机扩散粒子在该抗静电防粘着层内的重量百分比为5％至40％。30. The light-scattering film for a backlight module as claimed in claim 16, wherein the weight percentage of the organic diffusion particles in the antistatic and anti-adhesion layer is 5% to 40%.31.如权利要求30所述的用于背光模组的光散射膜片，其特征在于：该有机扩散粒子在该抗静电防粘着层内的重量百分比为10％至30％。31. The light-scattering film for a backlight module as claimed in claim 30, wherein the weight percentage of the organic diffusion particles in the antistatic and anti-adhesion layer is 10% to 30%.32.如权利要求17所述的用于背光模组的光散射膜片，其特征在于：聚甲基丙烯酸甲酯在该抗静电防粘着层内的重量百分比为10％至30％。32. The light-scattering film for a backlight module as claimed in claim 17, wherein the weight percentage of polymethyl methacrylate in the antistatic anti-adhesion layer is 10% to 30%.33.如权利要求1所述的用于背光模组的光散射膜片，其特征在于：该抗静电防粘着层的厚度为10至25微米。33. The light-scattering film used in a backlight module as claimed in claim 1, wherein the thickness of the antistatic anti-adhesion layer is 10 to 25 microns.34.如权利要求1所述的用于背光模组的光散射膜片，其特征在于：该光路径调整单元为印刷网点。34. The light-scattering film used in a backlight module as claimed in claim 1, wherein the light path adjustment unit is a printed dot.35.如权利要求34所述的用于背光模组的光散射膜片，其特征在于：该印刷网点是由抗紫外线油墨形成。35. The light-scattering film for a backlight module as claimed in claim 34, wherein the printed dots are formed by UV-resistant ink.36.如权利要求1所述的用于背光模组的光散射膜片，其特征在于：该光路径调整单元是由半透明材料形成。36. The light-diffusing film used in a backlight module as claimed in claim 1, wherein the light path adjustment unit is formed of a translucent material.37.如权利要求36所述的用于背光模组的光散射膜片，其特征在于：该半透明材料是聚碳酸酯。37. The light-diffusing film for a backlight module as claimed in claim 36, wherein the translucent material is polycarbonate.38.如权利要求36所述的用于背光模组的光散射膜片，其特征在于：该半透明材料是以涂布、真空蒸镀或离子溅镀方式来形成光路径调整单元。38. The light-scattering film used in a backlight module as claimed in claim 36, wherein the translucent material is formed by coating, vacuum evaporation or ion sputtering to form the light path adjustment unit.39.如权利要求36所述的用于背光模组的光散射膜片，其特征在于：该光路径调整单元是具有不规则V形的表面形状。39. The light-diffusing film used in a backlight module as claimed in claim 36, wherein the light path adjustment unit has an irregular V-shaped surface shape.40.如权利要求36所述的用于背光模组的光散射膜片，其特征在于：该光路径调整单元是具有不规则R形的表面形状。40. The light-diffusing film used in a backlight module as claimed in claim 36, wherein the light path adjustment unit has an irregular R-shaped surface shape.41.如权利要求1所述的用于背光模组的光散射膜片，其特征在于：该背光模组为直下式背光模组，且该光散射膜片是位于该光源的正上方。41. The light-scattering film for a backlight module as claimed in claim 1, wherein the backlight module is a direct type backlight module, and the light-scattering film is located directly above the light source.42.如权利要求41所述的用于背光模组的光散射膜片，其特征在于：该光源与该光散射膜片中间设有一导光板，以导引该光源的光线进入该光散射膜片。42. The light-scattering film used in a backlight module as claimed in claim 41, wherein a light guide plate is arranged between the light source and the light-scattering film to guide the light from the light source into the light-scattering film piece.43.如权利要求1所述的用于背光模组的光散射膜片，其特征在于：该背光模组为嵌入式背光模组，且该光散射膜片是直接位于该光源的正上方。43. The light-scattering film for a backlight module according to claim 1, wherein the backlight module is an embedded backlight module, and the light-scattering film is directly above the light source.44.一种如权利要求1至43的用于背光模组的光散射膜片的制法，其特征在于：其步骤包含有：44. A method for preparing a light-scattering film for a backlight module according to claims 1 to 43, wherein the steps include:提供一充作基材层的透明或半透明层；providing a transparent or translucent layer serving as the substrate layer;于该透明或半透明层的二相对面上分别形成一扩散层及一具有第一表面与第二表面的抗静电防粘着层，该抗静电防粘着层的第一表面是与该透明或半透明层接合；以及A diffusion layer and an antistatic anti-adhesion layer having a first surface and a second surface are respectively formed on two opposite surfaces of the transparent or semi-transparent layer. transparent layer bonding; and于该抗静电防粘着层的第二表面形成至少一个光路径调整单元，其设置是相关于该至少一个光源的设置。At least one light path adjustment unit is formed on the second surface of the antistatic and anti-adhesion layer, and its configuration is related to the configuration of the at least one light source.45.如权利要求44所述的用于背光模组的光散射膜片的制法，其特征在于：该扩散层是以涂布方式形成。45. The method for manufacturing a light-scattering film used in a backlight module as claimed in claim 44, wherein the diffusion layer is formed by coating.46.如权利要求44所述的用于背光模组的光散射膜片的制法，其特征在于：该扩散层是以静电喷涂方式形成。46. The method for manufacturing a light-scattering film used in a backlight module as claimed in claim 44, wherein the diffusion layer is formed by electrostatic spraying.47.如权利要求44所述的用于背光模组的光散射膜片的制法，其特征在于：该抗静电防粘着层是以涂布方式形成。47. The method for manufacturing a light-scattering film used in a backlight module as claimed in claim 44, wherein the antistatic and anti-adhesion layer is formed by coating.48.如权利要求44所述的用于背光模组的光散射膜片的制法，其特征在于：该抗静电防粘着层是以静电喷涂方式形成。48. The method for manufacturing a light-scattering film used in a backlight module as claimed in claim 44, wherein the antistatic anti-adhesion layer is formed by electrostatic spraying.49.如权利要求44所述的用于背光模组的光散射膜片的制法，其特征在于：该光路径调整单元是以印刷方式形成。49. The method for manufacturing a light-scattering film used in a backlight module as claimed in claim 44, wherein the light path adjustment unit is formed by printing.50.如权利要求44所述的用于背光模组的光散射膜片的制法，其特征在于：该光路径调整单元是以涂布、真空蒸镀或离子溅镀方式来形成。50. The method for manufacturing a light-scattering film for a backlight module as claimed in claim 44, wherein the light path adjustment unit is formed by coating, vacuum evaporation or ion sputtering.51.一种背光模组，其特征在于：该背光模组设有至少一个光源及光散射膜片，该光散射膜片包含有：51. A backlight module, characterized in that: the backlight module is provided with at least one light source and a light-scattering film, and the light-scattering film includes:一基材层，具有二相对面；a substrate layer having two opposite surfaces;一扩散层，其是形成于该基材层的一面上；以及a diffusion layer formed on one side of the substrate layer; and一抗静电防粘着层，其具有第一表面与第二表面，该第一表面是形成于该基材层的另一相对面上，第二表面具有至少一个光路径调整单元，该光路径调整单元的设置是相关于该至少一个光源的设置，An antistatic anti-adhesion layer, which has a first surface and a second surface, the first surface is formed on the other opposite surface of the substrate layer, the second surface has at least one light path adjustment unit, the light path adjustment the setting of the unit is related to the setting of the at least one light source,藉此，该至少一个光源的光线直接进入该抗静电防粘着层或经由该至少一个光路径调整单元调整路径后再进入该抗静电防粘着层，之后再经由该基材层及扩散层向外射出。In this way, the light of the at least one light source directly enters the antistatic anti-adhesion layer or enters the antistatic anti-adhesion layer after being adjusted by the at least one light path adjustment unit, and then passes through the base material layer and the diffusion layer to the outside shoot out.52.如权利要求51所述的背光模组，其特征在于：该背光模组为一直下式背光模组。52. The backlight module according to claim 51, wherein the backlight module is a direct type backlight module.53.如权利要求51所述的背光模组，其特征在于：该背光模组为一嵌入式背光模组。53. The backlight module as claimed in claim 51, wherein the backlight module is an embedded backlight module.54.一种显示装置，其设有一背光模组，其特征在于：该背光模组设有至少一个光源及光散射膜片，该光散射膜片包含有：54. A display device, which is provided with a backlight module, characterized in that: the backlight module is provided with at least one light source and a light-scattering film, and the light-scattering film includes:一基材层，具有二相对面；a substrate layer having two opposite surfaces;一扩散层，其是形成于该基材层的一面上：以及a diffusion layer formed on one side of the substrate layer: and一抗静电防粘着层，其具有第一表面与第二表面，该第一表面是形成于该基材层的另一相对面上，第二表面具有至少一个光路径调整单元，该光路径调整单元的设置是相关于该至少一个光源的设置，An antistatic anti-adhesion layer, which has a first surface and a second surface, the first surface is formed on the other opposite surface of the substrate layer, the second surface has at least one light path adjustment unit, the light path adjustment the setting of the unit is related to the setting of the at least one light source,藉此，该至少一个光源的光线直接进入该抗静电防粘着层或经由该至少一个光路径调整单元调整路径后再进入该抗静电防粘着层，之后再经由该基材层及扩散层向外射出。In this way, the light of the at least one light source directly enters the antistatic anti-adhesion layer or enters the antistatic anti-adhesion layer after being adjusted by the at least one light path adjustment unit, and then passes through the base material layer and the diffusion layer to the outside shoot out.55.如权利要求54所述的显示装置，其特征在于：该背光模组为一直下式背光模组。55. The display device according to claim 54, wherein the backlight module is a direct-type backlight module.56.如权利要求54所述的显示装置，其特征在于：该背光模组为一嵌入式背光模组。56. The display device as claimed in claim 54, wherein the backlight module is an embedded backlight module.57.如权利要求1所述的光散射膜片，其特征在于：该至少一个光路径调整单元是设置为相关于该至少一个光源的设置所形成的辉度空间分布。57. The light-scattering film as claimed in claim 1, wherein the at least one light path adjustment unit is configured to be related to the luminance spatial distribution formed by the configuration of the at least one light source.58.如权利要求1所述的光散射膜片，其特征在于：该至少一个光路径调整单元是设置为对应于该至少一个光源的设置。58. The light-scattering film of claim 1, wherein the at least one light path adjustment unit is configured to correspond to the at least one light source.59.如权利要求58所述的光散射膜片，其特征在于：该至少一个光路径调整单元是设置为对应于该至少一个光源的设置所形成的辉度空间分布。59. The light-scattering film according to claim 58, wherein the at least one light path adjustment unit is configured to correspond to the spatial distribution of luminance formed by the configuration of the at least one light source.60.如权利要求44所述的用于背光模组的光散射膜片的制法，其特征在于：该至少一个光路径调整单元是设置为相关于该至少一个光源的设置所形成的辉度空间分布。60. The method for manufacturing a light-scattering film for a backlight module as claimed in claim 44, wherein the at least one light path adjustment unit is set to correspond to the luminance formed by the setting of the at least one light source spatial distribution.61.如权利要求44所述的用于背光模组的光散射膜片的制法，其特征在于：该至少一个光路径调整单元是设置为对应于该至少一个光源的设置。61. The method for manufacturing a light-scattering film used in a backlight module as claimed in claim 44, wherein the at least one light path adjustment unit is configured to correspond to the at least one light source.62.如权利要求61所述的用于背光模组的光散射膜片的制法，其特征在于：该至少一个光路径调整单元是设置为对应于该至少一个光源的设置所形成的辉度空间分布。62. The method of manufacturing a light-scattering film for a backlight module as claimed in claim 61, wherein the at least one light path adjustment unit is set to correspond to the luminance formed by the setting of the at least one light source spatial distribution.63.如权利要求1所述的光散射膜片，其特征在于：该至少一个光路径调整单元调整路径是使得该至少一个光源的光线产生散射、反射或折射作用。63. The light-scattering film according to claim 1, wherein the at least one light path adjustment unit adjusts the path so that the light of the at least one light source produces scattering, reflection or refraction.64.如权利要求35所述的光散射膜片，其特征在于：该抗紫外线油墨是不透明。64. The light-scattering film of claim 35, wherein the UV-resistant ink is opaque.65.如权利要求35所述的光散射膜片，其特征在于：该抗紫外线油墨是部分透明。65. The light-scattering film of claim 35, wherein the UV-resistant ink is partially transparent.66.如权利要求1所述的光散射膜片，其特征在于：该光路径调整单元是由不透明及半透明材料形成。66. The light-scattering film as claimed in claim 1, wherein the light path adjusting unit is formed of opaque and translucent materials.67.如权利要求1所述的光散射膜片，其特征在于：该光路径调整单元是由部分透明及半透明材料形成。67. The light-scattering film as claimed in claim 1, wherein the light path adjustment unit is formed of partially transparent and translucent materials.68.如权利要求66所述的光散射膜片，其特征在于：该不透明材料为抗紫外线油墨，半透明材料为聚碳酸酯。68. The light-scattering film as claimed in claim 66, wherein the opaque material is UV-resistant ink, and the translucent material is polycarbonate.69.如权利要求67所述的光散射膜片，其特征在于：部分透明材料为抗紫外线油墨，半透明材料为聚碳酸酯。69. The light-scattering film as claimed in claim 67, wherein the partially transparent material is UV-resistant ink, and the translucent material is polycarbonate.70.如权利要求7所述的光散射膜片，其特征在于：抗静电防粘着层的扩散粒子是凸出于粘着物的表面。70. The light-scattering film of claim 7, wherein the diffusion particles of the antistatic anti-adhesion layer protrude from the surface of the adhesive.

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