CN101441285A - A reflective sheet - Google Patents

A reflective sheet Download PDF

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CN101441285A
CN101441285A CNA2007101876997A CN200710187699A CN101441285A CN 101441285 A CN101441285 A CN 101441285A CN A2007101876997 A CNA2007101876997 A CN A2007101876997A CN 200710187699 A CN200710187699 A CN 200710187699A CN 101441285 A CN101441285 A CN 101441285A
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layer
reflective
substrate
reflector
metal layer
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王嘉庆
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Abstract

The reflecting sheet mainly comprises a base material, a metal layer, a multilayer reflector and a diffusion layer, wherein the multilayer reflector is provided with more than two reflecting layers with different refractive indexes, the multilayer reflector is arranged on the upper surface of the metal layer, or the base material can be arranged between the multilayer reflector and the metal layer, the diffusion layer can be arranged on the lower surface of the base material or the metal layer, the metal layer and the multilayer reflector can have better reflectivity (up to 95-98%) in a wide wavelength range (about 380-780 nm), and the diffusion layer can be used for simultaneously enabling the passing light to achieve the effect of light diffusion.

Description

反射片 A reflective sheet

技术领域 technical field

本发明有关一种反射片、反射体的制造方法及其应用,目的在提供较佳的反射率,以应用于灯反射器、导光板下反射体、背光装置及液晶显示装置时,可获得较高亮度的反射片。The present invention relates to a manufacturing method of a reflector, a reflector and its application. The purpose is to provide better reflectivity, so that when it is applied to a lamp reflector, a reflector under a light guide plate, a backlight device and a liquid crystal display device, a higher reflectivity can be obtained. High brightness reflector.

背景技术 Background technique

按,一般应用在信息装置的液晶显示器,可以依照实际设计的需求,而选择利用直下式或者是侧光式的背光装置架构;如图1A所示,即为一侧光式背光装置架构的基本结构示意图,其主要在一载具11中设置光源12,并且将一导光板13板端套设在载具11的开口处,而导光板13上方则依序设有数枚光学膜片14及液晶面板15,以让光源12光线自板端射入导光板13并且朝向导光板13预期的板面射出,以达到液晶面板15显示的效果;其中,各光学膜片14一般利用下扩散片141、增光片142以及上扩散片143依序设置于导光板13上方,以由各光学膜片14增加光源的扩散效果以达均光效果。Press, the liquid crystal display that is generally used in the information device can choose to use the direct type or the side-light backlight device structure according to the actual design requirements; as shown in Figure 1A, it is the basic structure of the side-light backlight device Schematic diagram of the structure, which mainly installs a light source 12 in a carrier 11, and sets the end of a light guide plate 13 on the opening of the carrier 11, and above the light guide plate 13, several optical films 14 and liquid crystals are arranged in sequence Panel 15, so that the light from the light source 12 enters the light guide plate 13 from the plate end and exits toward the expected plate surface of the light guide plate 13, so as to achieve the effect displayed by the liquid crystal panel 15; wherein, each optical film 14 generally utilizes a lower diffusion sheet 141, The light enhancing sheet 142 and the upper diffusing sheet 143 are disposed above the light guide plate 13 in sequence, so that each optical film 14 can increase the diffusion effect of the light source to achieve a uniform light effect.

另外,于导光板13下方设有一反射片16,在反射片16的作用下让光源12光线尽可能朝向光源射出面方向射出,以增加光源射出面的亮度表现效果;惟,单一反射片16的反射作用,虽可将部份光线朝向光源射出面方向射出,但却会遗漏少部分的光线,而无法达到光源最有效的利用。In addition, a reflective sheet 16 is provided below the light guide plate 13. Under the action of the reflective sheet 16, the light from the light source 12 can be emitted toward the light source exit surface as much as possible, so as to increase the brightness performance of the light source exit surface; however, the single reflective sheet 16 Reflection, although part of the light can be emitted toward the direction of the light emitting surface, but a small part of the light will be missed, and the most effective use of the light source cannot be achieved.

故即出现如中国台湾专利公告号第CN1791810号以及第CN1745317号,其皆是包含有金属层17、高折射率层18以及低折射率层19,如图1B所示,且由上而下的顺序为高折射率层18、低折射率层19以及金属层17,以形成一具有较高反射率的反射体,而该反射体应用于背光装置中时,其发光面所发出的光线为不均匀的光,例如残留有灯影的光,则会在液晶显示装置的画面上产生辉度差,损害画面品质。因此,在这种照明装置中,要求具有在发光面整体辉度分布均匀的良好发光品质。Therefore, there are such as China Taiwan Patent Announcement No. CN1791810 and No. CN1745317, which all include a metal layer 17, a high refractive index layer 18 and a low refractive index layer 19, as shown in Figure 1B, and from top to bottom The sequence is a high refractive index layer 18, a low refractive index layer 19 and a metal layer 17 to form a reflector with a higher reflectivity, and when the reflector is used in a backlight device, the light emitted by its light-emitting surface is not large. Uniform light, such as light with residual lamp shadows, will produce brightness differences on the screen of the liquid crystal display device, deteriorating the picture quality. Therefore, such lighting devices are required to have good light emission quality with uniform luminance distribution over the entire light emitting surface.

故为了达到整体辉度分布均匀的发光品质,会进一步于该反射体上成形有波形或山形的结构体,以将光线进行扩散的作用;然而,在利用上述的反射体情况下,反射体的形状复杂,且难以设定使发光品质提高的最佳形状,另外还存在反射体需要加工、需要以高精度设定光源和反射体形状的位置关系的问题。Therefore, in order to achieve the luminous quality with uniform overall luminance distribution, a corrugated or mountain-shaped structure will be further formed on the reflector to diffuse the light; however, in the case of using the above-mentioned reflector, the reflector’s The shape is complex, and it is difficult to set an optimal shape for improving the light emission quality. There is also a problem that the reflector needs to be processed, and the positional relationship between the light source and the shape of the reflector needs to be set with high precision.

发明内容 Contents of the invention

本发明的主要目的即在提供一种反射片、反射体的制造方法及其应用,目的在于提供反射片一较佳的反射率,以应用于灯反射器、背光装置及液晶显示装置时,可获得较高亮度的反射片。The main purpose of the present invention is to provide a reflective sheet, a manufacturing method of a reflector and applications thereof. The purpose is to provide a reflective sheet with a better reflectivity, so that it can be applied to lamp reflectors, backlight devices and liquid crystal display devices. Obtain a reflective sheet with higher brightness.

为达上揭目的,本发明的反射片主要包含有基材、金属层、多层反射体以及扩散层,该多层反射体设有二层以上折射率相异的反射层,其中,该多层反射体设于金属层的上表面,或者该多层反射体与金属层间可设置基材,而该扩散层可设于基材或金属层的下表面,藉由金属层以及多层反射体可在宽广的波长范围(约380~780nm)内具有较佳的反射率(可达95~98%),且更可利用该扩散层同时使通过的光线达到光扩散的效果。To achieve the above disclosure purpose, the reflective sheet of the present invention mainly includes a base material, a metal layer, a multilayer reflector and a diffusion layer, and the multilayer reflector is provided with more than two reflective layers with different refractive indices, wherein the multilayer The multi-layer reflector is arranged on the upper surface of the metal layer, or a substrate can be arranged between the multilayer reflector and the metal layer, and the diffusion layer can be arranged on the lower surface of the substrate or the metal layer, through the metal layer and the multilayer reflection The body can have a better reflectivity (up to 95-98%) in a wide wavelength range (about 380-780nm), and the diffusion layer can be used to achieve the effect of light diffusion at the same time.

附图说明 Description of drawings

图1为习有侧光式背光模块的结构示意图;FIG. 1 is a schematic structural diagram of a conventional edge-lit backlight module;

图2为本发明中第一实施例反射片的结构示意图;Fig. 2 is a schematic structural view of the reflecting sheet of the first embodiment of the present invention;

图3为本发明中第一实施例反射片制造步骤的流程示意图;Fig. 3 is a schematic flow chart of the manufacturing steps of the reflective sheet in the first embodiment of the present invention;

图4为本发明中第二实施例反射片的结构示意图;Fig. 4 is a schematic structural view of the second embodiment of the reflection sheet in the present invention;

图5为本发明中第二实施例反射片制造步骤的流程示意图;Fig. 5 is a schematic flow chart of the manufacturing steps of the reflective sheet in the second embodiment of the present invention;

图6为本发明中第三实施例反射片的结构示意图;FIG. 6 is a schematic structural view of a reflection sheet according to a third embodiment of the present invention;

图7为本发明中第三实施例反射片制造步骤的流程示意图;7 is a schematic flow chart of the manufacturing steps of the reflective sheet in the third embodiment of the present invention;

图8A、B为本发明中第四、五实施例反射片的结构示意图;8A and B are structural schematic diagrams of reflective sheets of the fourth and fifth embodiments of the present invention;

图9A、B、C为本发明中第六、七、八实施例反射片结构示意图;9A, B, and C are structural schematic diagrams of reflectors in the sixth, seventh, and eighth embodiments of the present invention;

图10A、B为本发明中反射片应用于灯反射器的结构示意图;10A and B are structural schematic diagrams of reflective sheets applied to lamp reflectors in the present invention;

图11A、B为本发明中反射片应用于侧光式背光装置结构示意图;11A and B are structural schematic diagrams of reflective sheets applied to edge-lit backlight devices in the present invention;

图12A、B为本发明中反射片应用于直下式背光装置的结构示意图。FIGS. 12A and 12B are structural schematic diagrams of the reflective sheet applied to the direct-lit backlight device of the present invention.

【图号说明】【Description of figure number】

载具11             光源12              导光板13Vehicle 11 Light source 12 Light guide plate 13

光学膜片14         下扩散片141         增光片142Optical film 14 Lower diffusion sheet 141 Brightening sheet 142

上扩散片143        液晶面板15          反射片16Upper diffuser 143 LCD panel 15 Reflector 16

金属层17           高折射率层18        低折射率层19Metal layer 17 High refractive index layer 18 Low refractive index layer 19

反射片2            基材21              金属层22Reflector 2 Substrate 21 Metal layer 22

多层反射体23       第一反射层231        第二反射层232Multi-layer reflector 23 First reflective layer 231 Second reflective layer 232

第三反射层233      第N反射层N          扩散层24The third reflection layer 233 Nth reflection layer N diffusion layer 24

高分子树脂241      扩散粒子242         硬涂层25Polymer resin 241 Diffusion particles 242 Hard coating 25

透光粒子251        保护层26            黏着层27Light-transmitting particles 251 Protective layer 26 Adhesive layer 27

金属基材28         灯反射器3           光源31Metal substrate 28 Lamp reflector 3 Light source 31

载具41             光源装置42          导光板43Vehicle 41 Light source device 42 Light guide plate 43

扩散板44Diffusion plate 44

具体实施方式 Detailed ways

本发明的特点,可参阅本案图式及实施例的详细说明而获得清楚地了解。The features of the present invention can be clearly understood by referring to the drawings and the detailed description of the embodiments.

本发明反射片,该反射片2的结构如图2所示,至少包含有:The reflection sheet of the present invention, the structure of the reflection sheet 2 as shown in Figure 2, at least includes:

一基材21,该基材21可以为透明的树脂材质。A base material 21, the base material 21 can be a transparent resin material.

一金属层22,该金属层22设于该基材21的一侧表面,如图所示的实施例中,该金属层22设于基材21的上表面,该金属层22可以为铝或银等金属材质。A metal layer 22, the metal layer 22 is arranged on one side surface of the substrate 21, in the embodiment shown in the figure, the metal layer 22 is arranged on the upper surface of the substrate 21, the metal layer 22 can be aluminum or Silver and other metal materials.

一多层反射体23,该多层反射体23设于金属层22相对于基材21的另侧表面,该多层反射体23可设于金属层22的上表面,该多层反射体23设有二层以上折射率相异的反射层,该多层反射体23由金属层22上方依序包含有第一反射层231、第二反射层232、第三反射层233~第N反射层N,其中N小于或等于50,该第一反射层231的折射率小于第二反射层232,而上、下相邻的反射层间折射率差值大于0.4,亦即第一、第二反射层231、232间,以及第二、第三反射层233、233间的折射率差值均大于0.4,而该第三反射层233的折射率可小于或大于第二反射层232。A multilayer reflector 23, the multilayer reflector 23 is arranged on the other side surface of the metal layer 22 relative to the substrate 21, the multilayer reflector 23 can be arranged on the upper surface of the metal layer 22, the multilayer reflector 23 There are more than two reflective layers with different refractive indices, and the multilayer reflector 23 includes a first reflective layer 231, a second reflective layer 232, a third reflective layer 233 to an Nth reflective layer in order from above the metal layer 22. N, where N is less than or equal to 50, the refractive index of the first reflective layer 231 is smaller than that of the second reflective layer 232, and the difference in refractive index between the upper and lower adjacent reflective layers is greater than 0.4, that is, the first and second reflection The refractive index differences between the layers 231 and 232 and between the second and third reflective layers 233 and 233 are both larger than 0.4, and the refractive index of the third reflective layer 233 may be smaller or larger than that of the second reflective layer 232 .

一扩散层24,该扩散层24设于基材21相对于金属层22的另侧表面,该实施例中,该扩散层24设于基材21的下表面,该扩散层24中包含有高分子树脂241以及复数扩散粒子242,该扩散粒子242可以为二氧化钛、硫酸钡、碳酸钙的白色物质或其混合物;当然,该扩散层亦可以为白色或不透光高分子树脂。A diffusion layer 24, the diffusion layer 24 is arranged on the other side surface of the substrate 21 relative to the metal layer 22, in this embodiment, the diffusion layer 24 is arranged on the lower surface of the substrate 21, the diffusion layer 24 contains high Molecular resin 241 and a plurality of diffusion particles 242, the diffusion particles 242 may be white substances such as titanium dioxide, barium sulfate, calcium carbonate or a mixture thereof; of course, the diffusion layer may also be white or opaque polymer resin.

再者,上述实施例中反射片的制造方法,如图3所示,包含有下列步骤:Furthermore, the manufacturing method of the reflection sheet in the above-mentioned embodiment, as shown in FIG. 3 , includes the following steps:

A、提供一基材,该基材可以为透明的树脂材质,例如聚对苯二甲酸乙二酯(PET)、三乙酸纤维素(TAC)、聚奈二甲酸乙二醇酯(PEN)、聚丙二酯、聚醯亚胺、聚醚、聚碳酸酯、聚胺、聚乙烯、聚丙烯或聚乙烯醇、聚苯乙烯、聚甲基丙烯酸甲酯、聚氯乙烯、环氧树脂、酚醛树脂等或其等效物。A. Provide a substrate, which can be a transparent resin material, such as polyethylene terephthalate (PET), cellulose triacetate (TAC), polyethylene naphthalate (PEN), Polypropylene diester, polyimide, polyether, polycarbonate, polyamine, polyethylene, polypropylene or polyvinyl alcohol, polystyrene, polymethyl methacrylate, polyvinyl chloride, epoxy resin, phenolic resin etc. or its equivalent.

B、于该基材一侧表面,利用物理气相沉积制程成型一金属层,而该物理气相沉积制程可以为溅镀或蒸镀技术,该金属层可由金属元素或金属衍生物或金属氧化物所组成,例如可以为铝或银。B. On one side of the substrate, a metal layer is formed by a physical vapor deposition process, and the physical vapor deposition process can be sputtering or evaporation technology, and the metal layer can be made of metal elements or metal derivatives or metal oxides Composition, for example, may be aluminum or silver.

C、于该金属层相对于基材的另侧表面,利用物理气相沉积制程或涂布方式成型一多层反射体。C. On the surface of the metal layer opposite to the substrate, a multi-layer reflector is formed by physical vapor deposition process or coating method.

D、于该基材相对于金属层的另侧表面,利用涂布方式(可以为湿涂布)成型一扩散层,以完成如图2中第一实施例所示的反射片2结构。D. Form a diffusion layer on the surface of the base material opposite to the metal layer by means of coating (may be wet coating) to complete the reflective sheet 2 structure as shown in the first embodiment in FIG. 2 .

如图4所示的第二实施例中,该反射片2同样包含有:基材21、金属层22、多层反射体23以及扩散层24,该扩散层24设于基材21的一侧表面(可为上表面),该金属层22设于该扩散层24相对于基材21的另侧表面(可为上表面),而该多层反射体23设于金属层22相对于扩散层24的另侧表面(可为上表面),使该反射片2由上而下依序为:多层反射体23、金属层22、扩散层24以及基材21,而该多层反射体23由金属层22上方同样依序包含有第一反射层231、第二反射层232、第三反射层233~第N反射层N,其中N小于或等于50,该第一反射层231的折射率小于第二反射层232,而上、下相邻的反射层间折射率差值大于0.4。In the second embodiment shown in FIG. 4 , the reflection sheet 2 also includes: a substrate 21, a metal layer 22, a multilayer reflector 23 and a diffusion layer 24, and the diffusion layer 24 is arranged on one side of the substrate 21 surface (can be the upper surface), the metal layer 22 is arranged on the other side surface (can be the upper surface) of the diffusion layer 24 relative to the substrate 21, and the multilayer reflector 23 is arranged on the metal layer 22 relative to the diffusion layer 24 on the other side surface (can be the upper surface), so that the reflection sheet 2 is sequentially from top to bottom: multilayer reflector 23, metal layer 22, diffusion layer 24 and substrate 21, and the multilayer reflector 23 The first reflective layer 231, the second reflective layer 232, the third reflective layer 233 to the Nth reflective layer N are also sequentially included above the metal layer 22, wherein N is less than or equal to 50, and the refractive index of the first reflective layer 231 is smaller than the second reflective layer 232, and the refractive index difference between the upper and lower adjacent reflective layers is greater than 0.4.

再者,上述第二实施例中反射片的制造方法,如图5所示,包含有下列步骤:Furthermore, the manufacturing method of the reflecting sheet in the second embodiment above, as shown in FIG. 5 , includes the following steps:

A、提供一基材,该基材可以为透明的树脂材质,例如聚对苯二甲酸乙二酯(PET)、三乙酸纤维素(TAC)、聚奈二甲酸乙二醇酯(PEN)、聚丙二酯、聚醯亚胺、聚醚、聚碳酸酯、聚胺、聚乙烯、聚丙烯或聚乙烯醇、聚苯乙烯、聚甲基丙烯酸甲酯、聚氯乙烯、环氧树脂、酚醛树脂等或其等效物。A. Provide a substrate, which can be a transparent resin material, such as polyethylene terephthalate (PET), cellulose triacetate (TAC), polyethylene naphthalate (PEN), Polypropylene diester, polyimide, polyether, polycarbonate, polyamine, polyethylene, polypropylene or polyvinyl alcohol, polystyrene, polymethyl methacrylate, polyvinyl chloride, epoxy resin, phenolic resin etc. or its equivalent.

B、于该基材一侧表面,利用涂布方式成型一扩散层。B. On the surface of one side of the substrate, a diffusion layer is formed by coating.

C、于该扩散层相对于基材的另侧表面,利用物理气相沉积制程成型一金属层,而该物理气相沉积制程可以为溅镀或蒸镀技术,该金属层可由金属元素或金属衍生物或金属氧化物所组成,例如可以为铝或银。C. On the other side surface of the diffusion layer relative to the substrate, a metal layer is formed by a physical vapor deposition process, and the physical vapor deposition process can be sputtering or evaporation technology, and the metal layer can be made of metal elements or metal derivatives Or composed of metal oxides, such as aluminum or silver.

D、于该金属层相对于扩散层的另侧表面,利用物理气相沉积制程或涂布方式成型一多层反射体,而该物理气相沉积制程可以为溅镀或蒸镀技术,以完成如图4中第二实施例所示的反射片2结构。D. On the surface of the metal layer on the other side of the diffusion layer, use a physical vapor deposition process or coating method to form a multi-layer reflector, and the physical vapor deposition process can be sputtering or evaporation technology to complete as shown in the figure The reflective sheet 2 structure shown in the second embodiment in 4.

如图6所示的第三实施例中,该反射片2同样包含有:基材21、金属层22、多层反射体23以及扩散层24,该金属层22设于该基材21的一侧表面(可为下表面),该多层反射体23设于基材21相对于金属层22的另侧表面(可为上表面),该扩散层24设于金属层22相对于基材21的另侧表面(可为下表面),使该反射片2由上而下依序为:多层反射体23、基材21、金属层22以及扩散层24,而该多层反射体23由基材21上方同样依序包含有第一反射层231、第二反射层232、第三反射层233~第N反射层N,其中N小于或等于50,该第一反射层231的折射率小于第二反射层232,而上、下相邻的反射层间折射率差值大于0.4。In the third embodiment shown in Figure 6, the reflection sheet 2 also includes: a base material 21, a metal layer 22, a multi-layer reflector 23 and a diffusion layer 24, and the metal layer 22 is arranged on one side of the base material 21. Side surface (can be the lower surface), the multilayer reflector 23 is arranged on the other side surface (can be the upper surface) of the substrate 21 relative to the metal layer 22, and the diffusion layer 24 is arranged on the metal layer 22 relative to the substrate 21 The other side surface (can be the lower surface), so that the reflective sheet 2 from top to bottom is: multilayer reflector 23, base material 21, metal layer 22 and diffusion layer 24, and the multilayer reflector 23 consists of The substrate 21 also includes a first reflective layer 231, a second reflective layer 232, a third reflective layer 233 to an Nth reflective layer N in sequence, wherein N is less than or equal to 50, and the refractive index of the first reflective layer 231 is less than For the second reflective layer 232, the difference in refractive index between the upper and lower adjacent reflective layers is greater than 0.4.

再者,上述第三实施例中反射片的制造方法,如图7所示,包含有下列步骤:Furthermore, the manufacturing method of the reflection sheet in the third embodiment above, as shown in FIG. 7 , includes the following steps:

A、提供一基材,该基材可以为透明的树脂材质,例如聚对苯二甲酸乙二酯(PET)、三乙酸纤维素(TAC)、聚奈二甲酸乙二醇酯(PEN)、聚丙二酯、聚醯亚胺、聚醚、聚碳酸酯、聚胺、聚乙烯、聚丙烯或聚乙烯醇、聚苯乙烯、聚甲基丙烯酸甲酯、聚氯乙烯、环氧树脂、酚醛树脂等或其等效物。A. Provide a substrate, which can be a transparent resin material, such as polyethylene terephthalate (PET), cellulose triacetate (TAC), polyethylene naphthalate (PEN), Polypropylene diester, polyimide, polyether, polycarbonate, polyamine, polyethylene, polypropylene or polyvinyl alcohol, polystyrene, polymethyl methacrylate, polyvinyl chloride, epoxy resin, phenolic resin etc. or its equivalent.

B、于该基材一侧表面,利用物理气相沉积制程成型一金属层,而该物理气相沉积制程可以为溅镀或蒸镀技术,该金属层可由金属元素或金属衍生物或金属氧化物所组成,例如可以为铝或银。B. On one side of the substrate, a metal layer is formed by a physical vapor deposition process, and the physical vapor deposition process can be sputtering or evaporation technology, and the metal layer can be made of metal elements or metal derivatives or metal oxides Composition, for example, may be aluminum or silver.

C、于该基材相对于金属层的另侧表面,利用物理气相沉积制程或涂布方式成型一多层反射体,而该物理气相沉积制程可以为溅镀或蒸镀技术。C. On the surface of the substrate opposite to the metal layer, a multi-layer reflector is formed by physical vapor deposition process or coating method, and the physical vapor deposition process can be sputtering or evaporation technology.

D、于该金属层相对于基材的另侧表面,利用涂布方式成型一扩散层,以完成如图6中第三实施例所示的反射片2结构。D. Form a diffusion layer on the surface of the metal layer opposite to the base material by means of coating, so as to complete the reflective sheet 2 structure as shown in the third embodiment in FIG. 6 .

而上述各实施例反射片的多层反射体23上表面进一步设有硬涂层25,如图8A的第四实施例所示,该硬涂层25中亦可设有复数透光粒子251(particle),使该硬涂层25除了可保护下方的多层反射体23外,亦可利用复数透光粒子251而具有扩散的功用,亦可于该硬涂层25上表面可进一步设有保护层26,如图8B的第五实施例所示,该保护层26为可分离式设置于该硬涂层25上,例如可以利用离型方式设置于该硬涂层上,使该反射片弯折加工成不同形状时,可藉由该保护层26防止应力产生而使反射片变形,而整体反射片成型后则可将该保护层撕除。And the upper surface of the multilayer reflector 23 of the reflective sheet of the above-mentioned embodiments is further provided with a hard coating 25, as shown in the fourth embodiment of FIG. 8A, a plurality of light-transmitting particles 251 ( particle), so that the hard coating 25 can not only protect the multi-layer reflector 23 below, but also use a plurality of light-transmitting particles 251 to have a diffusion function, and the upper surface of the hard coating 25 can be further protected Layer 26, as shown in the fifth embodiment of FIG. 8B, the protective layer 26 is detachably disposed on the hard coating 25, for example, it can be disposed on the hard coating by using a release method, so that the reflective sheet is bent. When being folded into different shapes, the protective layer 26 can be used to prevent deformation of the reflective sheet due to stress, and the protective layer can be torn off after the integral reflective sheet is formed.

另外,更可于上述各实施例反射片的最底层进一步设有金属基材而形成反射体的结构,如图9A的第六实施例所示,该反射片2由上而下依序为:多层反射体23、金属层22、基材21以及扩散层24,该扩散层24下表面可藉由黏着层27结合金属基材28,或者如图9B的第七实施例所示,该反射片2由上而下依序为:多层反射体23、金属层22、扩散层24以及基材21,该基材21下表面可藉由黏着层27结合金属基材28,而该多层反射体23上表面亦可设有硬涂层25,亦或者如图9C的第八实施例所示,该反射片2由上而下依序为:多层反射体23、基材21、金属层22以及扩散层24,该扩散层24下表面可藉由黏着层27结合金属基材28,其中上述各实施例中,该反射片的最底层(基材或扩散层)与金属基材间的结合应力大于0.1kN/m2In addition, a metal substrate can be further provided on the bottom layer of the reflective sheets of the above-mentioned embodiments to form a reflector structure, as shown in the sixth embodiment of FIG. 9A , the reflective sheet 2 is as follows from top to bottom: Multi-layer reflector 23, metal layer 22, substrate 21 and diffusion layer 24, the lower surface of the diffusion layer 24 can be combined with the metal substrate 28 through the adhesive layer 27, or as shown in the seventh embodiment of Figure 9B, the reflector Sheet 2 is sequentially from top to bottom: a multilayer reflector 23, a metal layer 22, a diffusion layer 24, and a substrate 21. The lower surface of the substrate 21 can be bonded to a metal substrate 28 through an adhesive layer 27, and the multilayer The upper surface of the reflector 23 can also be provided with a hard coating 25, or as shown in the eighth embodiment of FIG. Layer 22 and diffusion layer 24, the lower surface of the diffusion layer 24 can be bonded to the metal substrate 28 through the adhesive layer 27, wherein in the above-mentioned embodiments, the bottom layer (substrate or diffusion layer) of the reflection sheet and the metal substrate The bonding stress is greater than 0.1kN/m 2 .

整体反射片因设有金属层及多层反射体,该多层反射体设有二层以上(最多可至50层)折射率相异的反射层,使光线通过时可将光线进行多次的反射,且与上述先前技术所提及的二篇专利案比较,该专利案仅具有两层折射率不同的反射层,其反射率增加的范围有限,而本发明利用二层以上(最多可至50层)多层反射层相互堆栈的作用,不仅使该光线可在宽广的波长范围(约380~780nm)内具有较佳的反射率(可达95~98%)外,同时容易使反射的光线形成布鲁斯特角(Brewster’s angle),可增加光线偏振光源以提高光线辉度,且更可进一步利用该扩散层或硬涂层中所具有的透光粒子(particle),再进一步将光线形成反射,亦可同时使通过的光线达到光扩散的效果。The overall reflection sheet is provided with a metal layer and a multi-layer reflector, and the multi-layer reflector is provided with more than two layers (up to 50 layers) of reflective layers with different refractive indices, so that the light can be refracted multiple times when the light passes through. Reflection, and compared with the two patents mentioned in the above-mentioned prior art, this patent only has two reflective layers with different refractive indices, and the range of increase in reflectivity is limited, while the present invention utilizes more than two layers (up to 50 layers) The role of multi-layer reflective layers stacking each other not only makes the light have better reflectivity (up to 95-98%) in a wide wavelength range (about 380-780nm), but also makes it easy to reflect The light forms a Brewster's angle, which can increase the light source of polarization to increase the luminance of the light, and can further use the light-transmitting particles in the diffusion layer or hard coating to further reflect the light , and at the same time make the passing light achieve the effect of light diffusion.

另外,本发明的反射片可应用于液晶显示装置的较佳者,且为可适用于液晶电视的面光源装置(也称为背光装置)与笔记型计算机等的侧光型面光源装置的较佳者。更具体而言,可作为灯反射器或导光板下反射体使用。如图10A所示为本发明反射片应用于的灯反射器实施例。该灯反射器3,以片状的本发明的反射片2成形为将萤光灯等的光源31覆盖的形状者,当然该反射片2可以形成如图所示的弧形状,亦可以为ㄈ形状,如图10B所示,或者加工成其它所需的外型。In addition, the reflective sheet of the present invention can be applied to liquid crystal display devices, and is suitable for surface light source devices (also called backlight devices) of liquid crystal televisions and side-light type surface light source devices for notebook computers. the best. More specifically, it can be used as a lamp reflector or a light guide plate lower reflector. FIG. 10A shows an embodiment of a lamp reflector to which the reflective sheet of the present invention is applied. The lamp reflector 3 is shaped to cover a light source 31 such as a fluorescent lamp with a sheet-shaped reflecting sheet 2 of the present invention. Of course, the reflecting sheet 2 may be formed in an arc shape as shown in the figure, or may be ㄈ Shape, as shown in Figure 10B, or processed into other desired appearance.

亦可将本发明的反射片装设于直下式或者是侧光式的背光装置中,如图11A所示,即为本发明的反射片装设于侧光式背光装置的基本结构示意图,其主要在一载具41中设置光源装置42以及复数光学膜片,该复数光学膜片可至少由反射片2以及导光板43所构成,而该导光板43的板端套设在载具41的开口处,其光源装置42并设置于载具41的侧边,于导光板43下方设置反射片2,以让光源装置42的光线自板端射入导光板43并且朝向导光板43预期的板面射出,以达到光源显示的效果;当然,导光板亦可设置于光源装置上方,并将反射片设于载具与光源装置之间,以形成直下式背光模块;且该反射片2亦可一体弯折成载具的外型,如图11B所示。The reflection sheet of the present invention can also be installed in a direct-type or side-light backlight device, as shown in FIG. A light source device 42 and a plurality of optical films are mainly arranged in a carrier 41. The plurality of optical films can be at least composed of a reflective sheet 2 and a light guide plate 43, and the plate end of the light guide plate 43 is sleeved on the carrier 41. At the opening, the light source device 42 is also arranged on the side of the carrier 41, and the reflective sheet 2 is arranged under the light guide plate 43, so that the light from the light source device 42 enters the light guide plate 43 from the end of the plate and is directed toward the expected plate of the light guide plate 43. to achieve the effect of light source display; of course, the light guide plate can also be arranged above the light source device, and the reflective sheet can be arranged between the carrier and the light source device to form a direct-type backlight module; and the reflective sheet 2 can also be One body is bent into the shape of the carrier, as shown in FIG. 11B .

如图12A所示,即为本发明的反射片装设于直下式背光装置的基本结构示意图,其主要在一载具41上方设置光源装置42以及光学膜片,该光学膜片可由反射片2以及扩散板44所构成,而该扩散板44设置于光源装置42上方,其反射片2则设于载具41与光源装置42的间,以让光源装置42的光线射入扩散板44并且朝向扩散板44预期的板面射出,以达到光源显示的效果;且该反射片2亦可一体弯折成载具的外型,如图12B所示。As shown in FIG. 12A, it is a schematic diagram of the basic structure of the reflective sheet of the present invention installed in a direct-type backlight device. It mainly arranges a light source device 42 and an optical film above a carrier 41. The optical film can be formed by the reflective sheet 2. and a diffuser plate 44, and the diffuser plate 44 is arranged above the light source device 42, and its reflection sheet 2 is arranged between the carrier 41 and the light source device 42, so that the light from the light source device 42 enters the diffuser plate 44 and goes toward The expected surface of the diffusion plate 44 projects out to achieve the effect of light source display; and the reflective sheet 2 can also be integrally bent into the shape of the carrier, as shown in FIG. 12B .

此外,亦可适用于LED背光、投影电视、前灯、以及PDA或行动电话等的正下方型显示装置的灯反射器。又,由于反射率高,故可作为太阳电池的聚光体材料利用。此外,亦可使用于要求注重质轻,耐冲击性的频闪器(strobe)、讯号显示器、汽车灯、萤光灯、手电筒、与要求高品级的美术照明用反射器、以及曲面镜、照后镜。In addition, it can also be applied to lamp reflectors of direct display devices such as LED backlights, projection TVs, front lights, and PDAs and mobile phones. Moreover, since the reflectance is high, it can be utilized as a light collector material of a solar cell. In addition, it can also be used in strobes, signal displays, car lights, fluorescent lights, flashlights, and reflectors for art lighting that require high-grade light weight and impact resistance, as well as curved mirrors and lighting. rear mirror.

本发明的技术内容及技术特点巳揭示如上,然而熟悉本项技术的人士仍可能基于本发明的揭示而作各种不背离本案发明精神的替换及修饰。因此,本发明的保护范围应不限于实施例所揭示者,而应包括各种不背离本发明的替换及修饰,并为以下的申请专利范围所涵盖。The technical content and technical characteristics of the present invention have been disclosed above, but those skilled in the art may still make various replacements and modifications based on the disclosure of the present invention without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should not be limited to those disclosed in the embodiments, but should include various replacements and modifications that do not depart from the present invention, and are covered by the scope of the following patent applications.

Claims (13)

1、一种反射片,该反射片至少包含有:1. A reflective sheet, the reflective sheet at least includes: 一基材,该基材为透明的树酯材质;A substrate, the substrate is a transparent resin material; 一金属层;a metal layer; 一多层反射体,该多层反射体由金属层上方依序包含有:第一反射层、第二反射层~第N反射层,其中N小于或等于50,而该第一反射层的折射率小于第二反射层,且上、下相邻的反射层间折射率差值大于0.4;A multi-layer reflector, the multi-layer reflector sequentially includes from above the metal layer: the first reflective layer, the second reflective layer to the Nth reflective layer, wherein N is less than or equal to 50, and the refraction of the first reflective layer The refractive index is lower than that of the second reflective layer, and the difference in refractive index between the upper and lower adjacent reflective layers is greater than 0.4; 一扩散层。a diffusion layer. 2、如权利要求1所述反射片,其中,该金属层设于基材的上表面,该多层反射体则设于金属层的上表面,而扩散层设于基材的下表面。2. The reflection sheet according to claim 1, wherein the metal layer is disposed on the upper surface of the substrate, the multi-layer reflector is disposed on the upper surface of the metal layer, and the diffusion layer is disposed on the lower surface of the substrate. 3、如权利要求1所述反射片,其中,该多层反射体设于基材的上表面,该金属层则设于基材的下表面,而该扩散层则设于金属层的下表面。3. The reflection sheet according to claim 1, wherein the multi-layer reflector is disposed on the upper surface of the substrate, the metal layer is disposed on the lower surface of the substrate, and the diffusion layer is disposed on the lower surface of the metal layer . 4、如权利要求1所述反射片,其中,该扩散层设于基材的上表面,该金属层则设于扩散层的上表面,而该多层反射体则设于金属层的上表面。4. The reflection sheet according to claim 1, wherein the diffusion layer is disposed on the upper surface of the substrate, the metal layer is disposed on the upper surface of the diffusion layer, and the multilayer reflector is disposed on the upper surface of the metal layer . 5、如权利要求2或3或4所述反射片,其中于反射片下方进一步结合有一金属基材。5. The reflection sheet according to claim 2, 3 or 4, wherein a metal substrate is further combined under the reflection sheet. 6、如权利要求5所述反射片,其中该反射片与金属基材间,进一步设有黏着层。6. The reflective sheet according to claim 5, wherein an adhesive layer is further provided between the reflective sheet and the metal substrate. 7、如权利要求5所述反射片,其中该多层反射体上表面进一步设有硬涂层。7. The reflection sheet according to claim 5, wherein the upper surface of the multi-layer reflector is further provided with a hard coating. 8、如权利要求7所述反射片,其中该硬涂层中设有复数透光粒子。8. The reflective sheet as claimed in claim 7, wherein a plurality of light-transmitting particles are disposed in the hard coat layer. 9、如权利要求5所述反射片,其中该反射片与金属基材间的结合应力大于0.1kN/m29. The reflective sheet according to claim 5, wherein the bonding stress between the reflective sheet and the metal substrate is greater than 0.1kN/m 2 . 10、如权利要求1、2、3或4所述反射片,其中该扩散层包含有高分子树脂与扩散粒子,或者可以为白色或不透光高分子树脂。10. The reflection sheet as claimed in claim 1, 2, 3 or 4, wherein the diffusion layer comprises polymer resin and diffusion particles, or may be white or opaque polymer resin. 11、如权利要求10所述反射片,其中该扩散粒子可以为二氧化钛、硫酸钡、碳酸钙的白色物质或其混合物。11. The reflective sheet as claimed in claim 10, wherein the diffusing particles are white substances of titanium dioxide, barium sulfate, calcium carbonate or a mixture thereof. 12、如权利要求1、2、3或4所述反射片,其中该金属层或多层反射体可利用物理气相沉积制程成型,其中该物理气相沉积制程可以为溅镀或蒸镀技术。12. The reflective sheet as claimed in claim 1, 2, 3 or 4, wherein the metal layer or multi-layer reflector can be formed by physical vapor deposition process, wherein the physical vapor deposition process can be sputtering or evaporation technology. 13、如权利要求1、2、3或4所述反射片,其中该多层反射体或扩散层可利用涂布方式成型。13. The reflective sheet according to claim 1, 2, 3 or 4, wherein the multi-layer reflector or diffusion layer can be formed by coating.
CNA2007101876997A 2007-11-22 2007-11-22 A reflective sheet Pending CN101441285A (en)

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CN102477250A (en) * 2010-11-26 2012-05-30 力科有限公司 Reflective coating composition and reflective sheet using the same
CN103943643A (en) * 2014-04-25 2014-07-23 武汉新芯集成电路制造有限公司 Multi-layer piled metal shading thin film and preparation method thereof
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CN108954053A (en) * 2017-05-22 2018-12-07 南昌欧菲显示科技有限公司 Backlight module, display device and terminal

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CN102477250A (en) * 2010-11-26 2012-05-30 力科有限公司 Reflective coating composition and reflective sheet using the same
CN104169749A (en) * 2012-02-13 2014-11-26 东丽株式会社 Reflective film
CN104169749B (en) * 2012-02-13 2017-04-12 东丽株式会社 Reflective film
CN103943643A (en) * 2014-04-25 2014-07-23 武汉新芯集成电路制造有限公司 Multi-layer piled metal shading thin film and preparation method thereof
CN103943643B (en) * 2014-04-25 2017-03-15 武汉新芯集成电路制造有限公司 Metal shading film that a kind of multilamellar is piled up and preparation method thereof
CN108954053A (en) * 2017-05-22 2018-12-07 南昌欧菲显示科技有限公司 Backlight module, display device and terminal
CN107132600A (en) * 2017-06-27 2017-09-05 宁波长阳科技股份有限公司 A kind of extrusion type diffusion barrier and preparation method thereof

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