JP2009109625A - Reflection film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reflection film which is prevented from being stuck to other passing member such as a FRP (flexible print circuit) in a back light device for a liquid crystal display apparatus and which can give light emitted therefrom high directivity. <P>SOLUTION: The reflection film used in the back light device for the liquid crystal display apparatus is constituted by laminating a sticking prevention layer formed by applying a coating material containing a filler of 0.001 to 10 μm mean grain size calculated by an arithmetic mean diameter onto a reflection film surface opposite to a light transmission plate side or on both reflection film surfaces of the light transmission plate side and opposite side thereof. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a reflective film used for efficiently reflecting light rays from a light source, and specifically to a reflective film for the purpose of efficient use of light rays in a liquid crystal display device or the like.

  A liquid crystal display device is used as an image display device for a mobile phone, a computer, a television, etc., but this can be made much thinner than a conventionally used cathode ray tube display device and can be easily reduced in size. This is because there is an advantage of. In particular, it can be said that the demand for the use of this liquid crystal display device is rapidly increasing with the increasing demand for lightness, thinness and miniaturization, which has been noticeable recently.

  Now, in such a liquid crystal display device, a backlight device is usually provided so that the liquid crystal display portion can be clearly seen, but the light emitted from the light source in this backlight device is ultimately efficient. In addition, a mechanism for reaching the liquid crystal display element is required. This is because in the liquid crystal display device, the liquid crystal display portion becomes clearer by illuminating the display portion more strongly from the back.

  For example, in order to allow light rays emitted from a light source in a backlight device using a cold cathode tube as a light source to efficiently reach the liquid crystal display device, the backlight device has a light source for directing all the light rays emitted from the light source to the liquid crystal display device. A light source reflector is installed in a substantially semi-enclosed state. By this light source reflector, the light emitted from the light source is directed in one direction. In addition, when an LED (light emitting diode) that has been widely used recently is used as a light source, light can be emitted toward the light guide plate without using such a light source reflector. A light guide plate is installed at the destination of the light beam, and the light beam incident on the light guide plate is emitted toward the liquid crystal plate. However, even in this case, not all light rays are emitted in the same direction, and light rays are emitted in unnecessary directions. That is, the light beam emitted from the light source may be directed directly to the liquid crystal display device, but it is necessary to return the light beam that has been spilled from the light guide plate, that is, directed toward the unnecessary direction, to the light guide plate again. For this purpose, a configuration is provided in which a reflection film that reflects the light beam is installed in a position corresponding to an unnecessary direction in which the light beam is emitted, and the light beam that has been emitted in an unnecessary direction is returned to the light guide plate again. The provided backlight device is employed in a liquid crystal display device.

  In order to further improve the luminance of the liquid crystal display device, it is common to use a prism sheet in the backlight device. This prism sheet is a member for collectively emitting the light that passes through the light guide plate and the light that passes through the light guide plate through the reflection film and emits it toward the liquid crystal plate. Light can change its direction to the front. Thus, the luminance in the liquid crystal display device is improved by changing the direction of the light to the front direction.

  As for the prism sheet, there are cases where an upward prism sheet is used and a downward prism sheet is used in the configuration of a conventional backlight device. When the upward prism sheet is used, two sheets are used, whereas when the downward prism sheet is used, only one sheet is used.

  As described above, in order to effectively use the light reflected from the reflective film in the current liquid crystal display device, the light that reaches the liquid crystal display device through the prism sheet must be used effectively. In this case, the light reflected from the reflection film must correctly reach the prism sheet through the light guide plate. For this purpose, a reflection film as described in Patent Document 1, for example, has been proposed.

JP 2001-266629 A

  In the reflection film described in Patent Document 1, the surface of the reflection film is embossed so that the light guide plate and the surface of the reflection film are not attached. This is because if they are affixed carelessly, the film will sag and uneven brightness will occur, and it is provided to avoid such a phenomenon.

  However, when this reflective film is actually used, the side opposite to the light guide plate side is smooth, so the reflective film and the chassis may partially stick together. Also, actually install this in the backlight device. , The shrinkage and elongation due to the heat and humidity generated by the material will vary depending on the material, so there will be a part that is attached and a part that is not attached, resulting in sagging in the reflective film and good quality reflection. The problem was that light could not be emitted.

  Furthermore, if the reflective film described in Patent Document 1 is used in the liquid crystal display device using the downward prism sheet described above, sufficient luminance cannot be obtained, which is a problem. This is because, when using a downward prism sheet, if the light guide plate side surface of the reflective film is not smooth, the light incident on the downward prism sheet through the light guide plate must be a light beam with high directivity in a specific direction. This is because the light guide plate side surface of the reflective film described in Patent Document 1 is not smooth, and therefore, it is impossible to obtain a light beam having high directivity in a specific direction even if this is used.

  Also, if so, it seems to be sufficient to use the reflective film described in Patent Document 1 so that the surface of the light guide plate is smooth by simply turning it upside down. It is a well-known fact for those skilled in the art that the use surface of the reflection film is predetermined, and if it is used in reverse, the luminance reduction phenomenon, luminance unevenness, etc. due to the difference in the path with the light guide plate, etc. It can be easily imagined that this problem will occur, and since such a problem actually occurs, it is unrealistic to use the reflective film described in Patent Document 1 in reverse. I must.

  Further, it is theoretically possible to simply emboss the opposite surface side of the reflective film described in Patent Document 1, but in any case, the reflective film described in Patent Document 1 is embossed. Because this means that the reflective film itself is physically deformed directly, it is considered that processing problems such as damaging the reflective film when manufacturing the reflective film may also occur. It is not necessarily preferable.

  Furthermore, in actual liquid crystal display devices, there are cases where members other than the members constituting the backlight device exist that pass through the interior of the backlight device due to the demand for lightness, thinness, and small size. Patented when the FPC (flexible printed circuit) constituting the display device is configured to pass through the back surface inside the backlight device opposite to the light guide plate side of the reflective film, in other words, viewed from the light guide plate side. If the reflective film described in Document 1 is used, no treatment is applied to the back side of the reflective film described in Patent Document 1, so that the reflective film and the FPC that passes through the back side are partially attached. Since the shrinkage and elongation due to heat and humidity generated by the reflective film and the FPC differ from material to material, the reflective film and the FP May stick partially, resulting in sticking and non-sticking points, resulting in sagging of the reflective film and inability to emit high quality reflected light. It was a problem.

  Eventually, the problem of uneven brightness has occurred as in the prior art. Further, when this case is observed in a plan view, the area of the reflective film surface and the area of the FPC are completely different, that is, even if they are overlapped, the overlapping portion is only a part of the reflective film surface. In terms of surface, the FPC overlaps only part of the surface of the reflective film, and further, the elongation rate of the FPC and the reflective film due to heat and humidity may be different, resulting in sagging of the reflective film. This causes a problem because of uneven brightness and uneven brightness.

  In short, in the case of the reflective film described in Patent Document 1, since no treatment is applied to the side surface opposite to the light guide plate side, this part is another member such as an FPC, or even a backlight device. As a result, a phenomenon of partially sticking to the chassis (or case) that constitutes the film occurs, and the function as a reflective film may be impaired.

  Therefore, the present invention has been made in view of such problems, and an object of the present invention is a backlight device used in a liquid crystal display device so that it does not stick to other members such as an FPC passing through the backlight device. It is another object of the present invention to provide a reflective film that can give high directivity to light emitted from the reflective film at the same time.

  In order to solve the above-mentioned problems, an invention relating to a reflective film according to claim 1 of the present invention is a reflective film used for a backlight device for a liquid crystal display device, on the side opposite to the light guide plate side of the reflective film. Alternatively, an anti-adhesion layer formed by applying a paint containing a filler having an average particle diameter calculated by an arithmetic average diameter of 0.001 μm or more and 10 μm or less to both surfaces of the light guide plate side and the light guide plate side opposite to each other. It is characterized by being laminated.

  The invention relating to the reflective film according to claim 2 of the present invention is the reflective film according to claim 1, wherein the filler is calcium carbonate, talc, mica, silicon oxide, barium sulfate, titanium oxide, polyethylene resin, acrylic resin. It is characterized by being based on one or more of a resin based on epoxy or epoxy resin.

  The invention related to the reflective film according to claim 3 of the present invention is the reflective film according to claim 1 or 2, wherein the paint is a polyester resin, a siloxane resin, an acrylic resin, a urethane resin, an epoxy. It is characterized by being a paint made of a resin based on resin or melamine.

  The invention related to the reflective film according to claim 4 of the present invention is the reflective film according to any one of claims 1 to 3, wherein the reflective film is a base plastic film, an undercoat layer, a metal vapor deposition. It is characterized by being laminated in the order of a layer and a topcoat layer, and its use surface is the base plastic film side.

  The invention relating to the reflective film according to claim 5 of the present invention is the reflective film according to any one of claims 1 to 3, wherein the reflective film is a base plastic film, an undercoat layer, a metal vapor deposition. The layers are laminated in the order of a layer and a top coat layer, and the use surface is the top coat layer side.

  The invention related to the reflective film according to claim 6 of the present invention is characterized in that in the reflective film according to claim 4 or 5, a plastic film is further laminated on the surface opposite to the use surface. And

  The invention relating to the reflective film according to claim 7 of the present invention is the reflective film according to any one of claims 4 to 6, wherein the anti-sticking layer is opposite to the reflective film use surface. It is provided only on the surface.

  As described above, since the reflection film according to the present invention is provided with the anti-adhesion layer, if this is used as a member constituting the backlight device of the liquid crystal display device, the chassis is a member for housing the backlight device. Therefore, the reflected light emitted from the reflective film is of good quality, and it is possible to suppress the occurrence of uneven brightness that has occurred with conventional products. At the same time, if such an anti-adhesion layer is provided only on the chassis side and not on the conductive light plate side, the surface on the light guide plate side becomes smooth. The light emitted toward the optical plate has a very large number of specular reflection components. Therefore, when the backlight device employs a downward prism, it is possible to easily improve the luminance.

Embodiments of the present invention will be described below. The embodiment shown here is merely an example, and is not necessarily limited to this embodiment.
(Embodiment 1)
A reflective film according to the present invention will be described as a first embodiment.

  The reflective film according to the present embodiment is a reflective film used in a backlight device for a liquid crystal display device, and the reflective film is on the side opposite to the light guide plate side, or on the side opposite to the light guide plate side and the light guide plate side. And an anti-adhesion layer formed by applying a paint containing a filler having an average particle diameter calculated from the arithmetic average diameter of 0.001 μm to 10 μm.

Here, an example of a backlight device used in a liquid crystal display device using the reflective film according to this embodiment will be briefly described.
An example of the configuration of the backlight device is as follows. That is, a light source, a light source reflecting plate that surrounds the light source in a semicircular shape when viewed from the side, a light guide plate on which light from the light source and light reflected by the light source reflecting plate are incident, and a direction from the light guide plate to the liquid crystal display device Reflecting the light spilled on the opposite side to the light guide plate side again and making it incident on the light guide plate, the chassis for supporting the reflection film, and the light emitted from the light guide plate on the liquid crystal display device A prism sheet for collecting light in the front direction and improving the luminance of the liquid crystal display device by doing so.

  The light source is, for example, a light emitting diode (LED) or the like, and the light source reflector is, for example, a metal vapor-deposited sheet whose surface is vapor-deposited with metal or a white PET film. The light guide plate is a plate for emitting light incident from a light source or the like in a direction different from the incident direction and in the same direction, for example, a reflection dot printed on an acrylic plate, The light guide plate has irregularities on the acrylic surface, but in any case, if any other member is stuck to the light guide plate, the stuck member will sag and cause uneven brightness. Therefore, the backlight device is configured so that the other members do not sag so that the other members do not stick to the light guide plate. It is devised so that each member is installed. Note that these members may naturally be known in the backlight device using the reflective sheet according to the present embodiment.

  In addition, a prism sheet is sometimes used to efficiently collect and guide all the light emitted from the light guide plate to the liquid crystal display device installed ahead of the light guide plate. There are two types, a sheet and a downward prism sheet. In the case of the upward prism sheet, the light is refracted by the prism to guide the light in the direction of the liquid crystal display device (hereinafter also referred to as the front direction). In the case of the downward prism sheet, the light is totally reflected by the slope of the prism and is directed in the front direction. Guide the light. In the case of an upward prism sheet, there is no problem even if the incident light has many diffuse reflection components. However, in the case of a downward prism sheet, since the incident light is not a light having a regular reflection component, an effect such as improvement in luminance cannot be obtained. In the case of a downward-facing prism sheet, it is effective and indispensable to use it in combination with a light guide plate that emits light having high directivity in a specific direction.

  The reflective sheet according to the present embodiment is used as a member constituting the backlight device as described above, for example. Each of the components will be described in order below.

  First of all, it is a base plastic film, which may be a commonly used plastic film, such as a transparent film such as a polyethylene terephthalate (PET) film, or a white film for improving the reflectance. A white film such as a PET film may be used. Further, an olefin-based film, a polycarbonate (PC) film, a polyethersulfone (PES) film, and the like may be used. In this embodiment, a conventionally known PET is used. A film will be used.

  The thickness of the base plastic film is not particularly limited. For example, the thickness is preferably 20 μm or more and 200 μm or less, but if it is 200 μm or more, the thickness of the entire reflective film according to the present embodiment is required. It is because it becomes impossible to make it thin enough, and when it is 20 μm or less, the base film itself is damaged when the reflective film according to the present embodiment is obtained, or the obtained reflective film is easily damaged. This is because the necessary “strain” for the reflection film itself cannot be obtained, so that problems such as being too soft to be practically used in actual use tend to occur.

Next, the anchor coat layer provided on the surface of the base plastic film will be described.
This anchor coat layer is provided so that the above-mentioned base film and the metal vapor deposition layer described later are not easily peeled off, and the material thereof is not particularly limited. A resin, a siloxane resin, an acrylic resin, a urethane resin, an epoxy resin, a melamine resin, or the like is used. In this embodiment, an acrylic resin is used.

  A method of laminating this layer may be a group of conventionally known methods called so-called wet coating such as gravure coating. The thickness of the anchor coat layer laminated in this embodiment by this method is not particularly limited, but is preferably, for example, 0.001 μm or more and 10 μm or less.

  When the anchor coat layer is laminated in this way, the metal vapor deposition layer is laminated on the surface next, but in the reflective film according to the present embodiment, the light incident mainly on the surface of the metal vapor deposition layer is reflected. It is necessary that the surface of the metal deposition layer has a so-called metallic luster. In order to obtain the desired reflection, in this embodiment, the metal deposition layer is formed of silver. However, even in other cases, the desired reflection is obtained as in the case of using silver. For example, the metal vapor deposition layer may be formed of aluminum or the like, or silver or aluminum alloy.

  This metal vapor deposition layer may be laminated | stacked by a conventionally well-known method, for example, techniques, such as a vacuum evaporation method and sputtering method, may be sufficient. Moreover, it can be said that the thickness of the metal vapor-deposited layer obtained is preferably 500 mm or more and 1500 mm or less, but if this is less than 500 mm, sufficient light reflection cannot be obtained, and if it exceeds 1500 mm, the present embodiment There is a limit to reducing the thickness of the entire reflection film obtained in the form, and it becomes impossible to suppress the manufacturing cost above all, and if it is too thick, the layer is likely to break due to the generation of internal stress. Because.

  When a metal vapor deposition layer is laminated in this manner, a top coat layer is then provided on the surface. This top coat layer may also be laminated using a conventionally known material, for example, polyester resin, siloxane resin, acrylic resin, etc. It is conceivable to use as a material any one or more of resins such as resin, urethane resin, epoxy resin, or melamine resin, or silicon oxide, magnesium fluoride, aluminum fluoride, calcium fluoride, In this embodiment, an acrylic paint is used. Incidentally, the lamination method of these materials may be a conventionally known method, for example, a so-called dry coating method such as a sputtering method or a vacuum evaporation method, a so-called wet coating method such as a gravure coating method or a bar coating method, etc. That's fine. Furthermore, the thickness of this layer is preferably 0.001 μm or more and 10 μm or less.

  Further, since the top coat layer is laminated on the outermost surface, the metal vapor deposition layer hardly comes into direct contact with the outside air, and therefore the metal vapor deposition layer corrodes due to the contact between the metal vapor deposition layer and air. Therefore, the function of preventing corrosion of the metal vapor deposition layer is also exhibited, such as preventing the light reflection function of the metal vapor deposition layer from being lowered, and consequently the reflection performance of the reflective film from being lowered.

  As described above, the reflective film according to the present embodiment has a configuration in which the sticking prevention layer is further laminated on the surface in which the respective members described above are sequentially laminated. In other words, a laminate film in which an undercoat layer, a metal vapor deposition layer, and a topcoat layer are laminated in this order on the surface of a PET film as a base plastic film is further laminated with an anti-adhesion layer on this embodiment. It becomes the reflective film which concerns on this form. The normal reflection film is intended for the light incident side, that is, it is usually designed and laminated on the assumption that the light is incident from which side of the laminate as the use surface. In addition, in general, the base plastic film side is generally used as a use surface in general. However, in the present embodiment, the description will be further continued assuming that the top coat layer side is used. However, even if the base plastic film is a PET film or other plastic film, if a film that is transparent to some extent and can transmit visible light is used as the base plastic film, the base plastic film It should be noted that the film side can be the working surface or can be used, i.e., in practice, any surface can be used as the working surface, depending on the design.

Next, the sticking prevention layer will be described.
In the reflective film according to the present embodiment, a sticking prevention layer is further laminated on the PET film side surface of the laminated film having the configuration of PET film / undercoat layer / metal vapor deposition layer / topcoat layer. This sticking prevention layer is basically formed by applying a paint containing a filler, and the reflective film according to the present embodiment is specifically applied to other members constituting the backlight device. It is a layer that is stacked to prevent it from sticking to the chassis.

  This anti-sticking layer is laminated by applying a paint containing a filler having an average particle diameter calculated by arithmetic mean diameter of 0.001 μm or more and 10 μm or less. As the filler, calcium carbonate, talc , Mica, silicon oxide, barium sulfate, titanium oxide, polyethylene resin such as polyester, polyolefin and polyamide, acrylic resin, or epoxy resin, or as paint, polyester resin, siloxane It may be a resin, acrylic resin, urethane resin, epoxy resin, or melamine resin paint, but in this embodiment, silicon oxide is used as a filler, and this is added to a polyester paint. Will be used.

  The proportion of the filler contained in the acrylic paint is 10% of the solid content, but in the present embodiment, it may be 0.1% or more and 50% or less. Further, the method for applying the filler-containing paint, that is, the method for forming the anti-sticking layer may be a conventionally known wet coating method, for example, a bar coating method, a gravure coating method, or the like. Then, it should be noted that the method is not particularly limited.

  The reflective film according to the present embodiment is composed of the above-described members, that is, has a structure of anti-sticking layer / PET film / undercoat layer / metal vapor deposition layer / topcoat layer, and The surface used is a topcoat layer.

  Moreover, as a reflective film which concerns on this Embodiment, it is also considered with respect to the structure mentioned above that it is set as the reflective film which interposes a plastic film between an adhesion prevention layer and PET film. This is commonly referred to as “two-sheet sticking”, and is used to attach a metal vapor-deposited film on which a metal such as aluminum is vapor-deposited or a plastic film such as a white PET film. In order to use light incident from the top coat layer on the surface more effectively, that is, in order to reflect the incident light as completely as possible, the light that spills from the PET film to the side opposite to the use surface is further reflected. In order to do this, it is attached to the side opposite to the use surface side of the PET film, but in this embodiment, the two layers are pasted to prevent the sticking layer on the side opposite to the use surface side. It is also possible to adopt a configuration of stacking layers. By the way, when the PET film side is used as the use surface in the configuration of PET film / undercoat layer / metal vapor deposition layer / topcoat layer, the anti-sticking layer will be provided on the topcoat layer side. It is also conceivable to design the top coat layer also as an anti-sticking layer. Moreover, when it is set as the structure which adheres a plastic film further to the topcoat layer side similarly to the above, the effect similar to having mentioned above can be acquired by providing an adhesion prevention layer on the surface of this plastic film further. According to the above, further detailed explanation is omitted for these cases.

  The reflective film is installed in the backlight device so that the use surface is located on the light guide plate side. That is, the sticking prevention layer is positioned at the lowermost portion, that is, the side facing the chassis in a substantially sectional view. By positioning the sticking prevention layer at this place, in the backlight device for a liquid crystal display device using the reflective film according to the present embodiment, the reflective film is not inadvertently stuck to the chassis. Luminance unevenness on the liquid crystal display surface, which has been caused by sticking of this portion, does not occur.

  Further, as described above, the sticking prevention layer is only located on the chassis side, and is not located on the light guide plate side, so that the backlight device using the reflective sheet according to the present embodiment is reflected from the reflective film. Since the light beam sufficiently includes a regular reflection component with respect to the light guide plate, considering the case of installing a prism sheet to guide the light emitted from the light guide plate further in the front direction, the back using the downward prism sheet is used. It can also be used in a light device. As a result, even if it is a component that is required to be as thin as possible in small and ultra-compact liquid crystal display devices such as mobile phones, the use of the prism sheet is also required when designing the entire device on the premise that a downward prism sheet is used. Since the number of sheets can be kept to the minimum necessary, it greatly contributes to thinning.

  Furthermore, due to the recent demand for lightness and thinness, members other than liquid crystal display devices and backlight devices, and members that can no longer be placed in locations that could conventionally be placed due to the lightness and thinness of the entire device, For example, it is conceivable that an FPC (flexible printed circuit) will be transmitted through the backlight device, specifically, between the reflective film and the chassis. By providing an anti-adhesion layer as described above, it is possible to prevent the FPC and the reflective film according to this embodiment from being inadvertently attached even through the FPC, so that these are attached. Thus, it is possible to prevent the occurrence of phenomena such as luminance unevenness and luminance reduction caused by the occurrence of such a phenomenon.

  Although not described in detail here, when the PET film side of the film, which is a PET film / anchor coat layer / metal vapor deposition layer / top coat layer, is used as the use surface, the light guide plate is naturally used. Since it will be used so that the PET film is located on the facing side, it should be noted that in this case, the above-described sticking prevention layer is laminated on the surface of the topcoat layer.

(Embodiment 2)
In the first embodiment described above, the structure of the anti-adhesion layer / PET film / anchor coat layer / metal vapor deposition layer / top coat layer has been described, but it is also applied to the surface of the top coat layer. It is conceivable to form an anti-sticking layer. This configuration will be described as a second embodiment.

  In the reflective film according to the above-described embodiment, the anti-sticking layer is formed on the surface opposite to the light guide plate, so that the chassis and the reflective film constituting the backlight device are not stuck. However, even in such a case, it is conceivable that the light guide plate or the reflection film is stuck when the light guide plate or the reflection film is installed.

  Therefore, not only a sticking prevention layer is formed on the surface opposite to the light guide plate side, but also the same sticking to the surface on the top coat layer side which is located on the light guide plate side at the same time, that is, the use surface side. By forming the prevention layer, that is, by providing the adhesion prevention layer on both sides, it is possible to prevent the reflective film according to the present embodiment from being inadvertently attached to other members. In addition, although it may be designed so that this sticking prevention layer can be used also as a topcoat layer, the further detailed description is abbreviate | omitted regarding this.

  Thus, it is assumed that it is difficult to use the backlight device using the downward prism sheet described above when the reflective film is provided with the anti-adhesion layer on both sides, but upwards. If the prism sheet is used, this time, as described above, the upward prism sheet requires a light diffusing component, and therefore the backlight device using the upward prism sheet uses the reflective sheet according to the present embodiment. Since the anti-adhesion layer is formed on the surface opposite to the light guide plate side, the reflection sheet and the chassis can be prevented from adhering to each other, and the anti-adhesion layer is also formed on the light guide plate side. The diffusion component of the light beam introduced into the light guide plate is emphasized, and as a result, the quality of the light beam introduced into the upward prism sheet through the light guide plate is improved. , It is say that.

  Since the reflective film according to the embodiment described above is used for a backlight device in a liquid crystal display device, it is prevented that the reflective film is abruptly stuck to other members. It is possible to suppress the occurrence of luminance unevenness caused by the bending of the liquid crystal display, and as a result, the luminance of the entire liquid crystal display device can be easily improved.

Claims (7)

A reflective film used in a backlight device for a liquid crystal display device,
Filler having an average particle diameter calculated from the arithmetic average diameter of 0.001 μm or more and 10 μm or less on the opposite surface side of the reflective film to the light guide plate side or on both surfaces of the light guide plate side and the opposite surface of the light guide plate Laminating an anti-adhesion layer formed by applying a paint containing
Reflective film characterized by In the reflective film according to claim 1,
The filler is made of any one or more of calcium carbonate, talc, mica, silicon oxide, barium sulfate, titanium oxide, polyethylene resin, acrylic resin, or epoxy resin,
Reflective film characterized by In the reflective film according to claim 1 or 2,
The paint is a paint made of polyester resin, siloxane resin, acrylic resin, urethane resin, epoxy resin, or melamine resin,
Reflective film characterized by In the reflective film according to any one of claims 1 to 3,
The reflective film is laminated in the order of a base plastic film, an undercoat layer, a metal vapor deposition layer, and a topcoat layer, and the use surface is the equipment plastic film side,
Reflective film characterized by In the reflective film according to any one of claims 1 to 3,
The reflective film is laminated in the order of a base plastic film, an undercoat layer, a metal vapor deposition layer, and a topcoat layer, and the use surface is the topcoat layer side,
Reflective film characterized by In the reflective film according to claim 4 or 5,
Further laminating a plastic film on the surface opposite to the use surface;
Reflective film characterized by In the reflective film according to any one of claims 4 to 6,
The sticking prevention layer is provided only on the surface opposite to the reflective film use surface,
Reflective film characterized by