KR101923503B1 - Security Film Using Coded Patterns and Detection Apparatus thereof - Google Patents

Abstract

More particularly, the present invention relates to a security film and a detection device thereof, and more particularly to a security film and a detection device thereof that are capable of detecting a one-dimensional bar code, a two-dimensional bar code, a QR code and the like less than the original detectable reference size, It is possible to prevent forgery and falsification by forming a coded pattern using a specific wavelength sensitive material, a polarizing material, or a magnetic material, prevent the risk of removal by applying it to various places of the security film, The distribution path, and the authenticity of the security film, and a detection device thereof.

Description

[0001] The present invention relates to a security film using a coded pattern and a security film using the coded pattern,

More particularly, the present invention relates to a security film and a detection device thereof, and more particularly to a security film and a detection device thereof that are capable of detecting a one-dimensional bar code, a two-dimensional bar code, a QR code and the like less than the original detectable reference size, It is possible to prevent forgery and falsification by forming a coded pattern using a specific wavelength sensitive material, a polarizing material, or a magnetic material, prevent the risk of removal by applying it to various places of the security film, The distribution path, and the authenticity of the security film, and a detection device thereof.

As a means of verifying authenticity of various products ranging from high-priced famous brands to household goods, stickers for activation that have a visual security effect are widely used. Among such sticker technologies, since the security members such as the hologram, the lenticular sheet and the three-dimensional film can be easily mass-produced, the security effect can be obtained at a relatively low price and it is provided in the form of a film. Therefore, Is advantageous.

However, with the development of digital devices and the development of the forgery and falsification technology, even the security members of the film type have such counterfeit products that they can hardly be distinguished by the naked eye. In addition, as the distribution channels of products such as parallel imports and Internet commerce have become complicated recently, social problems caused by illegal products are increasing. Accordingly, producers and consumers need to confirm the legitimacy of the distribution process as well as authenticity of the products. Is increasing.

Various methods have been devised and used to meet these problems and social needs. Of these technologies, bar codes, two-dimensional bar codes, QR codes and the like are methods that can easily and quickly identify information related to products at a low cost, but have a drawback in that security is very low because they are relatively easy to forge and modify. To overcome these drawbacks, advanced technologies such as RFID have been developed to identify information related to products more quickly, but these technologies have a disadvantage that they are relatively expensive to apply. In addition, a method of printing serial numbers on a sticker for activation such as a hologram can be confirmed as a genuine product through a sticker for activation, and it is possible to confirm that the product is a genuine product, You can find information about the product, such as the authenticity of the product and the date of production. However, this method is disadvantageous in that it is relatively easy to forge and falsify the serial number and the procedure for checking the serial number is very troublesome.

Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for preventing forgery and falsification, Dimensional barcode, a QR code, or the like is formed into a coded pattern using a fluorescent material, an infrared absorbing material, an infrared reflecting material, a polarizing material, or a magnetic material that can not be observed with the naked eye and enlarged upon detection And to detect and track various information related to a product such as a production history of a product, a distribution route, authenticity, and the like, and to provide a security film having the coded pattern and a detection device thereof.

First, a security film according to an aspect of the present invention includes at least one coded pattern formed on one or both sides of a base substrate, wherein the coded pattern is a reference (For example, 1/1 to 1/1000) smaller than the size of the coded pattern to be formed by a material which can not be observed with the naked eye and which is electrically or optically And outputting or decoding the image by detecting a signal so that the corresponding identification information is extracted.

The coded pattern may be a pattern including a one-dimensional bar code, a QR code, a two-dimensional bar code, a text, an image, or a computer generated hologram (CGH)

The coded pattern may be formed of a coating material containing a material that reacts to electromagnetic waves of a specific wavelength. For example, the coded pattern may be a material that absorbs or reflects infrared rays, a general fluorescent material, And emits an electromagnetic wave of the same wavelength band or a electromagnetic wave of a shorter or longer wavelength band.

In addition, the coded pattern may be formed of a coating material including a polarizing material capable of imparting polarizability to electromagnetic waves. For example, the coded pattern may be formed of liquid crystal.

In addition, the coded pattern may be formed of a coating material containing a magnetic material capable of reacting with a magnetic field. For example, the coded pattern may be a material exhibiting magnetism of paramagnetic, ferromagnetic, The material may be made of a material having a property of magnetizing when it is located.

And a shielding film formed thereon for durability after the coded pattern is formed.

And an adhesive layer for adhering to the product on a surface of the base substrate on which the coded pattern is not formed.

The adhesive layer may further comprise an adhesive layer formed thereon for attachment to the product after the coded pattern is formed, or a shielding film for durability formed sequentially thereon after the coded pattern is formed, and an adhesive layer for attachment to the product.

A coded pattern formed on one side of the base substrate and a coded pattern formed on the other side of the base substrate through the detection device may serve as one code indicating identification information for the product.

According to another aspect of the present invention, there is provided a security film comprising at least one coded pattern and an image information layer formed on one or both sides of a base substrate, wherein the coded pattern has a size smaller than a reference size detectable by a reader, Folded magnification and is formed by a substance which is not observed with the naked eye, and through the detection device, the identification information detected from the image information layer formed by the material to be visually observed and the coded pattern And the identification information for the product is obtained by a combination of identification information extracted and output as an image by detecting an electrical or optical signal from the image.

The coded pattern and the image information layer may be formed adjacent to each other or spaced apart by a certain distance.

The image information layers may be sequentially stacked on the coded pattern or the coded patterns may be sequentially stacked on the image information layer.

Wherein at least two coded patterns formed on one or both sides of the base substrate are made of a material that reacts with electromagnetic waves of a specific wavelength, a polarizing material that can impart polarization to electromagnetic waves, or a magnetic material that can react with a magnetic field ≪ / RTI >

According to still another aspect of the present invention, there is provided a security film comprising at least one coded pattern and a fine pattern layer formed on one or both sides of a base substrate, wherein the coded pattern has a reference size Identification information detected from the fine pattern layer patterned in an embossed pattern so as to be visually observed through a detection device, and identification information that is formed by a substance that is reduced to a magnification of 1 or less and is not observed with the naked eye, Characterized in that identification information on a product is obtained by a combination of identification information extracted by decoding or outputting an image by detecting an electrical or optical signal from a coded pattern.

The fine pattern layer may be formed on the coded pattern or the coded pattern may be formed on the fine pattern layer.

And a reflective layer formed of a metal material before or after the formation of the fine pattern layer.

When the coded pattern is formed of a material that absorbs infrared rays, the reflective layer may be formed of a material that transmits infrared rays.

When the reflective layer is formed of a material that reflects infrared rays, the coded pattern absorbs an infrared ray absorbing material or an electromagnetic wave of a specific wavelength band, and absorbs electromagnetic waves of the same wavelength band or electromagnetic waves of a shorter or longer wavelength band Or the like.

According to another aspect of the present invention, there is provided a security film comprising at least one coded pattern formed on one or both sides of a base substrate, and an image array layer, wherein each image of the one- or two- Wherein the coded pattern is formed by a material that is reduced in magnification by at least one magnitude below a reference size detectable by a reader without magnification and is not visible to the naked eye, Image identification information detected by each lens of the lens array layer focused on each image of the image array layer patterned in an embossed pattern so as to be observed with the naked eye from the coded pattern using an electromagnetic wave or a sensor, Or by extracting and decoding an image by detecting an optical signal, And acquiring identification information on the product by a combination of the unique information.

The image array layer may be formed on the coded pattern, or the coded pattern may be formed on the image array layer.

And a coloring layer formed of a colored material before or after the formation of the image array layer.

And a reflective layer formed of a metal material on the lens array layer.

When the coded pattern is formed of a material that absorbs infrared rays, the reflective layer may be formed of a material that transmits infrared rays.

When the reflective layer is formed of a material that reflects infrared rays, the coded pattern absorbs an infrared ray absorbing material or an electromagnetic wave of a specific wavelength band, and absorbs electromagnetic waves of the same wavelength band or electromagnetic waves of a shorter or longer wavelength band Or the like.

In all of the above security film structures, a coded pattern formed on one side of the base substrate and a coded pattern formed on the other side of the base substrate through a detection device are combined as one code indicating identification information on the product . In addition, in all of the security film structures described above, two or more coded patterns formed on one or both sides of the base substrate may be formed of a material that reacts with electromagnetic waves of a specific wavelength, a polarizing material that can impart polarizability to electromagnetic waves, And may be made of different materials among the magnetic materials capable of reacting.

Further, in all of the security film structures as described above, the coded pattern may be formed of a coating material containing a material which reacts with electromagnetic waves of a specific wavelength. In addition, in the above-mentioned security film structure, the coded pattern absorbs electromagnetic waves of a specific wavelength band, absorbs or reflects infrared rays, and emits electromagnetic waves of such a wavelength band or electromagnetic waves of a shorter or longer wavelength band Or < / RTI > In addition, in all of the security film structures as described above, the coded pattern may be formed of a coating material including a polarizing material capable of imparting polarizability to electromagnetic waves. Also, in all of the above security film structures, the coded pattern may be formed of a coating material containing a magnetic material capable of reacting with a magnetic field.

All of the above security film structures can be attached to one side of the product through an adhesive layer, or injection-molded into the case of the product case and integrated into the product case.

In addition, a detection device for extracting identification information from a coded pattern formed on a security film according to another aspect of the present invention, the detection device comprising: at least one light source for irradiating an electromagnetic wave with a coded pattern of the security film; A bandpass filter for reflecting or transmitting electromagnetic waves of a specific wavelength band emitted from the coded pattern, a polarizing filter for absorbing, reflecting, or transmitting polarized electromagnetic waves emitted from the coded pattern, An optical system including at least one of a magnetic sensor for detecting a magnetic field from a pattern and outputting the bandpass filter or an image from the polarizing filter to an image magnified at least one time; And an image sensor for detecting an image imaged by the optical system, wherein the security film comprises one or more coded patterns formed on one or both sides of a base substrate, wherein the coded pattern is applied to a reader A fluorescent substance capable of reacting with an electromagnetic wave of a specific wavelength which is reduced to a magnification of not more than 1 time smaller than a reference size that can be detected by a visible light, a polarizing substance capable of imparting polarization to electromagnetic waves or a magnetic substance capable of reacting to a magnetic field Detecting a signal for an image formed by the optical system through the image sensor with respect to the coded pattern or detecting an electrical signal through the magnetic sensor to output an enlarged image of the coded pattern as an image Or extracts the corresponding identification information.

According to the security film having a coded pattern according to the present invention, at least one coded pattern is formed on one side or both sides of the polymer base film smaller than the original detectable reference size, and the upper surface of the coded pattern or the base film On the other side, means for activation, which may consist of text, images, holograms, etc., are formed, and the coded pattern is only responsive to electromagnetic waves of a certain wavelength, such as infrared absorption or reflective material, The coded pattern is not visible to the naked eye and is not exposed to the outside, so that people other than the person concerned can not know whether the coded pattern exists or not, so that the coded pattern has a very high security effect.

The coded pattern may be a pattern including a bar code, a two-dimensional bar code, a QR code, etc., and may be formed of any type of patterns that can be coded, such as text information including numbers, images, etc., Various information related to the product such as production history, distribution route, authenticity, and the like can be grasped through the product.

Also, in the process of detecting the coded pattern, an electromagnetic wave of a specific wavelength is irradiated so that the material constituting the coded pattern can be reacted, and an electromagnetic wave emitted again from the electromagnetic wave is detected. (A magnetic substance is detected through a magnetic sensor in the case of a magnetic substance) through a detector composed of a combination of a sensor, such as a CMOS or an imaging sensor such as a CCD, and the coded pattern, which can not be observed with the naked eye, It is possible to confirm the image in the form of an image larger than a reference size that can be detected through the display means of the detector. At the same time, information encoded in the pattern can be confirmed through software implementing the decoding algorithm of the coded pattern.

Since the security film having the coded pattern according to the present invention can be applied by a conventional screen printing method or the like, it is inexpensive, can not be observed with the naked eye, and can access the code only under special conditions. And when the security film of the present invention is applied to various products including high quality brand products, the producers can maximize the profit due to the high anti-counterfeiting effect, and consumers can purchase high quality genuine products It is possible to identify and purchase directly, and the distribution of goods will be sound, which can contribute to the realization of a fair society.

1 is a conceptual diagram of a security film and a detection device using a coded pattern according to the present invention.
2 is a view for explaining a structure of various security films having a coded pattern according to an embodiment of the present invention.
3 is a view for explaining the structure of various security films having a coded pattern according to another embodiment of the present invention.
4 is a view for explaining the structure of various security films having a coded pattern according to another embodiment of the present invention.
5 is a view for explaining the structure of various security films having a coded pattern according to another embodiment of the present invention.
6 is a conceptual diagram of a detection device for detecting a coded pattern of a security film according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

1 is a conceptual diagram of a security film 600 and a detection device 700 using a coded pattern according to the present invention. The security film 600 having the pattern 202 coded in various forms according to the present invention described in FIGS. 2 to 5 can be applied to various logistics products 100 including advanced brand products, It is possible to manufacture and use the security film 600 applied with the coded pattern 202 smaller than the original detectable reference size so that the coded pattern 202 is disposed in various places of the product 100. In addition, A coded pattern 202 formed in the form of a material, an infrared reflective material, a polarizing material, or a magnetic material in the form of a one-dimensional bar code, a two-dimensional bar code (including a quick response) code, (E. G., Amplification of a sensing signal of a magnetic material) amplified by the detection device 700 of the invention (e. G., Amplification of a fluorescent material, infrared absorbing or reflective material, And is displayed or decoded on the display device 607 which is the same display means so that various information related to the product 100 such as the production history of the product 100, the distribution route, and authenticity can be easily and quickly confirmed or tracked.

The security film 600 according to the present invention can be applied to the product 100 or its packaging or the like to be protected on its one side or can be applied to the product 100 or its packaging by a method such as in- . ≪ / RTI > The security film 600 may include a one-dimensional barcode, a two-dimensional barcode (including a QR code) on one or both sides, and may further include various text information including numbers, an image, a hologram One or more coded patterns 202 that can be implemented in all types of patterns are formed, and the coded patterns 202 are not observed under general visible light illumination, and can be detected by fluorescence having characteristics that are expressed by electromagnetic waves of a specific wavelength Material, or a polarizing material capable of imparting polarization to electromagnetic waves, or a magnetic material capable of reacting to a magnetic field. Therefore, since a general observer can not know whether such a coded pattern 202 exists or not, and the existence of the coded pattern 202 can be known only through the detection apparatus 700 designed to detect such a specific material The security film 600 has considerable security.

In addition, the coded pattern 202 of such a specific material is formed in a reduced size with a magnification of less than 1 times the original detectable reference size, The security film 600 is manufactured and used so that a plurality of the security films 202 are disposed. For example, in the case of a one-dimensional bar code, the original detectable reference size is 3.73 cm in width and 2.7 cm in height as standard, and can be detected without enlargement through a reader to a degree slightly smaller or larger than the standard size. In the case of a bar code (including a QR code), the original detectable reference size is such that each cell is formed so as to include 4 dots or more within 1 cell (0.28 mm * 0.28 mm), and can be detected without enlargement through a reader. The coded pattern 202 of the present invention is reduced in size to a magnification of 1x or less (for example, 1/1 to 1/1000) smaller than the original detectable reference size, thereby preventing visual observation The coded patterns 202 are prevented from being damaged and at least one of the plurality of coded patterns 202 arranged at a plurality of locations is left unremoved even if one is damaged, thereby enhancing the security.

2 is a diagram for explaining the structure of various security films 200 having a coded pattern 202 according to an embodiment of the present invention. 2 (a), 2 (b), and 2 (c) show a cross-sectional view of a polycarbonate (PC), a polyethylene terephthalate (PET), a polyvinyl chloride (PVC), polymethylmethacrylate (PMMA) (D) and 2 (e) show a case in which one or more coded patterns 202 are formed on one side of a colored or transparent base substrate 201 of a polymer material And has a coded pattern 202.

2 (a) according to an embodiment of the present invention includes a coded pattern 202 formed on one surface of a base substrate 201 and a shielding film 203 formed on the entire surface of the coded pattern 202, And an adhesive layer 204 is formed on the opposite surface of the base substrate 201. [

2 (b) according to an embodiment of the present invention includes a pattern 202, a shielding film 203, and an adhesive layer 204 coded on one surface of a base substrate 201, ≪ / RTI >

2 (c) according to an embodiment of the present invention shows a structure in which a coded pattern 202 and an adhesive layer 204 are sequentially formed on one surface of a base substrate 201 .

2 (d) according to an embodiment of the present invention includes a coded pattern 202 formed on one surface of a base substrate 201 and a shielding film 203 formed thereon And a coded pattern 202, a shielding film 203, and an adhesive layer 204 are sequentially formed on the opposite surface of the base substrate 201. [

2 (e) according to an embodiment of the present invention includes a coded pattern 202 formed on one side of a base substrate 201 and a shielding film 203 formed thereon And a coded pattern 202 and an adhesive layer 204 are sequentially formed on the opposite surface of the base substrate 201. [

As described above, the security film according to an embodiment of the present invention includes at least one coded pattern 202 formed on one side or both sides of a base substrate 201, (Not shown) on which an adhesive layer 204 for attachment to the product 100 is formed (see FIGS. 2A, 2 D, and 2 E) The adhesive layer 204 may be formed after the shielding film 203 is formed on the coded pattern 202 on the corresponding side of the shielding film 201 (see FIGS. 2B and 2D) The adhesive layer 204 may be formed directly on the coded pattern 202 (see (c) and (e) of FIG. 2). The adhesive layer 204 may also be omitted in some cases. In some cases, the shielding film 203 may be formed between the base substrate 201 and the coded pattern 202 as well.

The shielding film 203 shields the coded pattern 202 from being exposed to the outside and enhances the durability. In addition, the shielding film 203 shields the visibility from the coded pattern 202, . The shielding film 203 can be formed by a surface treatment method such as a hard coating or a transparent or colored primer using a material such as a resin or a plastic, which is commonly used in the film industry. Such a surface treatment technique is used in the film production and processing industry Since it is a commonly used technique, the detailed description is omitted here.

The coded pattern 202 may be formed of a general paint that can be observed with the naked eye, but it may be formed of a specific wavelength reacting material that reacts with an electromagnetic wave of a specific wavelength, a polarizing material capable of imparting polarization to the electromagnetic wave, A magnetic material, and the like. Here, the specific wavelength reactant may be, for example, a material that absorbs or reflects infrared light, a fluorescent material that absorbs electromagnetic waves of relatively short wavelengths and emits electromagnetic waves of longer wavelengths, and absorbs electromagnetic waves of relatively long wavelengths And absorbs electromagnetic waves of a specific wavelength band (range of a predetermined band) as an anti-stokes material that emits electromagnetic waves of a shorter wavelength than the electromagnetic waves of the same wavelength band, Of all electromagnetic waves emitted by the electromagnetic wave. A polarizing material capable of imparting polarizability to an electromagnetic wave means a material capable of emitting a polarized electromagnetic wave by imparting polarizing property to an arbitrary electromagnetic wave, such as a liquid crystal. The magnetic material capable of reacting with the magnetic field means a material exhibiting magnetism such as paramagnetic, ferromagnetic, semi-magnetic, and antiferromagnetic, and means any material having a property of magnetizing when it is placed in a magnetic field. The coded pattern 202 may be formed in various colors so that it can be observed with the naked eye. Particularly, it can be observed with naked eyes under a specific lighting condition, which is not observed with the naked eye, As shown in FIG.

In the case where one or more coded patterns 202 are formed on both sides of the base substrate 201 and the coded patterns 202 formed on each side of the base substrate 201 as shown in Figure 2 (d) or 2 (e) Code such as one-dimensional / two-dimensional barcode, text, image, and hologram (CGH, Computer Generated Hologram) for identifying and tracking information related to the product 100, ). Accordingly, even if the coded pattern 202 is lost or damaged to some extent, the information can be confirmed with a pattern remaining on either side of the two sides, so that the security can be further improved.

In addition, in order to prevent forgery and falsification and to enhance security, the one code may be divided into two or more parts so as to be formed into the coded patterns 202 on both sides of the base substrate 201. For example, the information detected in the coded pattern 202 formed on one side of the base substrate 201 through the detection device 700 is combined with the information detected in the coded pattern 202 formed on the opposite side thereof, You can let it serve as a code. The coded pattern 202 on the base substrate 201 located on the opposite side of the surface to be attached to the product 100 can be colored and can be visually confirmed, The coded pattern 202 on the side of the base substrate 201 which is placed on the side of the base substrate 201 is processed in a non-visible color such as a fluorescent material, a polarizing material, and a magnetic material, Can be improved.

3 is a view for explaining the structure of various security films 300 having a coded pattern according to another embodiment of the present invention.

3 (a), (b), (c), (d), (e), (g) and (h) 3 (a), 3 (b), 3 (c), 3 (g) and 3 (h) illustrate the case where the image information layer 301 is a coded pattern 202, 3 (d) and 3 (e) show a case in which the image information layer 301 is formed on the coded pattern 202 and the other surface of the base substrate 201 . Fig. 3 (f) shows a case in which one or more coded patterns 202 and image information layers 301 are provided on both sides of the base substrate 201, respectively. 3 (i) is to explain that the security film 300 can be manufactured in the form of a hot stamping foil and adhered to the surface of a product such as the product 100.

Here, the coded pattern 202 may be a non-visible material (such as a one-dimensional bar code, a QR code, a two-dimensional bar code, a text, an image, or a hologram Separately from the coded pattern 202, the image information layer 301 may be attached to a security film such that the text (including numbers) or images associated with the product 100 to be protected As a piece of information, information for publicity of the product 100 or a security element for activation may be patterned in a predetermined area by a printing or imprinting method using a paint containing a predetermined visible coloring material . The image information layer 301 may include a one-dimensional / two-dimensional barcode. The image information layer 301 may be formed in an original detectable reference size (e.g., a recognizable standard size, or a predetermined area) so that it can be detected (or magnified) without enlargement through a reader (Including numbers), images, and the like may be formed as the size and number of the required dots), and the identification information for the product 100 may be represented by a combination with the coded pattern 202. In some cases, each element of the image information layer 301 may have a reduction magnification of less than or equal to 1 times the reference magnitude detectable by the reader (or detection device 700) / 1000). ≪ / RTI >

3 (a) according to another embodiment of the present invention includes a coded pattern 202 formed on one side of a base substrate 201 so as to be spaced apart (adjacent) from each other, A structure including a layer 301 including a shielding film 203 formed thereon and an adhesive layer 204 formed on an opposite surface of the base substrate 201. [

3 (b) according to another embodiment of the present invention includes a coded pattern 202 and an image information layer 301 sequentially formed on one surface of a base substrate 201 And includes a shielding film 203 formed thereon, and an adhesive layer 204 is formed on the opposite surface of the base substrate 201.

3 (c) according to another embodiment of the present invention is a method for forming an image information layer 301 on one side of a base substrate 201 and forming a coded pattern And a shielding film 203 formed on the front surface of the base substrate 201 and having an adhesive layer 204 formed on the opposite surface of the base substrate 201. [

3 (d) according to another embodiment of the present invention includes an image information layer 301 formed on one surface of a base substrate 201 and a shielding film 203 formed thereon, And a coded pattern 202 formed on the opposite side of the base substrate 201 and including a shielding film 203 and an adhesive layer 204 sequentially formed thereon.

3 (e) according to another embodiment of the present invention is formed by forming a coded pattern 202 on one surface of a base substrate 201 and forming a shielding film 203 formed thereon, And a structure including an image information layer 301 formed on the opposite side of the base substrate 201 and a shielding film 203 sequentially formed thereon and an adhesive layer 204.

3 (f) according to another embodiment of the present invention includes an image information layer 301 formed adjacent to (separated from) one surface of a base substrate 201, A coded pattern 202 and an image information layer 301 formed adjacent to each other (apart from each other) on the opposite side of the base substrate 201, A shielding film 203 sequentially formed thereon and an adhesive layer 204 are shown. Here, the coded pattern 202 and the image information layer 301 are formed to be staggered on one side of the base substrate 201 and on the opposite side, but the present invention is not limited thereto, and the coded patterns 202 and the image information layer 301 may overlap each other when viewed from above.

3 (g) according to another embodiment of the present invention includes an image information layer 301 formed sequentially on one surface of a base substrate 201 and a coded pattern 202 And a structure including the shielding film 203 and the adhesive layer 204 sequentially formed thereon.

3 (h) according to another embodiment of the present invention includes a coded pattern 202 and an image information layer 301 sequentially formed on one surface of a base substrate 201 And a structure including the shielding film 203 and the adhesive layer 204 sequentially formed thereon.

3 (a) to 3 (h), the one or more coded patterns 202 and the image information layer 301 are adjacent to each other or on both sides of the base substrate 201, Or a pattern 202 in which one or more coded patterns 202 and an image information layer 301 are sequentially layered or coded with the image information layer 301 are formed on one or both sides of the base substrate 201 Are stacked in order.

At this time, a shielding film 203 is formed on the coded pattern 202 or the image information layer 301 on the surface of the base substrate 201 without the adhesive layer 204 (see FIGS. 3A to 3F) The shielding film 203 is formed on the coded pattern 202 or the image information layer 301 on the side of the base substrate 201 on which the adhesive layer 204 for attachment to the product 100 is formed, (Not shown in the drawings), it is possible to directly form the coded pattern 202 or the image information layer 301 without the shielding film 203 (see FIG. 3 (d) The adhesive layer 204 may be formed (see (c) and (e) of FIG. 2). The adhesive layer 204 may also be omitted in some cases. In some cases, the shielding film 203 may be formed on the base substrate 201, and then the coded pattern 202 or the image information layer 301 may be formed thereon.

3 (f), a coded pattern 202 formed on each side of the base substrate 201 in the case where at least one coded pattern 202 and an image information layer 301 are formed on both sides of the base substrate 201 It is possible to display one piece of code information as product identification information for allowing at least one of the image information layers 301 to confirm or track information related to the product 100 such as a production history, Accordingly, even if any part of the coded pattern 202 or the image information layer 301 is lost or damaged, the information can be confirmed by a pattern remaining on either side of the two sides, thereby further enhancing security can do.

In order to prevent forgery and tampering and to enhance security, in the security film 300 of the structure (f) of FIG. 3, for example, one code for confirming or tracking information related to the product 100 is not less than 2 And may be formed as a patterned pattern 202 or an image information layer 301 on both sides of the base substrate 201, respectively. For example, the coded pattern 202 formed on one side of the base substrate 201 through the detection device 700 or the coded pattern 202 formed on the opposite side of the information detected in the image information layer 301 The information detected in the image information layer 301 may be combined to serve as a single code. In addition, the image information layer 301 may be colored to be visible and visually confirmed, and the coded pattern 202 may be processed in a non-visible color, such as the above-described fluorescent material, polarizing material, magnetic material, By making it impossible to know existence, security can be further improved.

3 (f), the coded pattern 202 formed on one side of the base substrate 201 and the coded pattern 202 formed on the other side are formed of different invisible materials, Can be provided. When two or more coded patterns 202 are formed on either side of the base substrate 201, they may be formed of different invisible materials. For example, the coded pattern 202 may be formed of a general paint that can be observed with the naked eye. In particular, the pattern 202 may be formed of a paint made of a fluorescent material that reacts with an electromagnetic wave (infrared light, etc.) One of them may be formed of a polarizing material capable of imparting a polarizing property to electromagnetic waves or a coating material made of a magnetic material capable of reacting to a magnetic field. Accordingly, the coded pattern 202 located on the left or right side can be selectively detected according to the illumination condition, thereby providing a high security effect.

3 (a) to 3 (h), the security film 300 of the present invention is manufactured in the form of a hot stamping foil as shown in FIG. 3 (i) It can be attached to the surface of the same adherend. It can be similarly applied to the attachment of the security film of the structure of Fig. 4 or Fig. 5 described in Figs. For example, when a security film (for example, 300) manufactured by the method of the present invention is placed on the surface of an object such as the product 100 and heat and pressure are applied using the stamping die 302, Only the core portion 300 'is permanently attached to the product or adherend 100, and once attached it is difficult to remove.

FIG. 4 is a view for explaining the structure of various security films 400 having a coded pattern according to another embodiment of the present invention.

4 (a), 4 (b) and 4 (c) show a case where one or more coded patterns 202 are provided on one surface of a colored or transparent base substrate 201 made of the above-described material, (A) shows a case where the fine pattern layer 402 and the reflective layer 401 are formed on the other side of the coded pattern 202, and FIGS. 4 (b) and 4 And the reflective layer 401 are formed on the same side of the coded pattern 202 and the base substrate 201. [ 4D shows a case where the base substrate 201 has at least one coded pattern 202 on both sides thereof and a fine pattern layer 402 and a reflective layer 401 on the side where the adhesive layer 204 is present to be. 4 (e) and 4 (f), a security film (for example, FIGS. 4 (c) and 4 (b)) having the above structure is manufactured in the form of a hot stamping foil, ) ≪ / RTI > on the surface of the substrate.

Here, the coded pattern 202 may include a one-dimensional bar code, a QR code, a two-dimensional bar code, a text, an image, or a CGH (Computer Generated Hologram) And the fine pattern layer 402 may be formed of a text (including numerals), an image, and the like related to the product 100 to which the security film is to be attached, And a security element for activating the product 100, such as a hologram, and the like. The fine pattern layer 402 may include a one-dimensional / two-dimensional bar code. The embossing method for indicating the identification information of the fine pattern layer 402 may be performed by applying heat and pressure to a radiation curing resin using a convex mold to form a concave micropattern or using a concave mold And may be formed into a convex micropattern in a radiation curing resin. Any function and advantage of the security film according to the present invention can be obtained by using any method. The fine pattern layer 402 may be formed in an original detectable reference size (e.g., a recognizable standard size, or a predetermined area) so as to be able to detect (or expand) without enlargement through a reader An image, a hologram, and the like may be formed in the form of text (including a number) and the identification information of the product 100 in combination with the coded pattern 202 may be displayed. In some cases, each embossed shape of the fine patterned layer 402 may have a reduction magnification of less than or equal to 1 times the reference size detectable by the reader (or detection device 700), similar to the encoded pattern 202, 1/1000).

The reflective layer 401 serves to more clearly show the optical phenomenon occurring in the fine pattern layer 402 and is usually formed of a metal such as aluminum (Al), gold (Au), silver (Ag), copper (Cu) (ZnS), or the like, and reflects light. The reflective layer 401 and the fine pattern layer 402 may be formed by changing the order in which the layers are formed in some cases during the manufacturing process of the film, and the drawings shown in the present specification are exemplary only, And the process used in the industrial field of the present invention.

4 (a) according to another embodiment of the present invention includes a coded pattern 202 formed on one surface of a base substrate 201 and a shielding film 203 formed thereon A reflective layer 401 and a fine pattern layer 402 are formed on the opposite side of the base substrate 201 and an adhesive layer 204 is formed thereon. The reflective layer 401 and the fine pattern layer 402 may be formed between the base substrate 201 and the coded pattern 202 although not shown in the figure.

4 (b) according to another embodiment of the present invention includes a coded pattern 202 formed on one surface of a base substrate 201, a reflective layer 401 formed thereon, Layer 402, and an adhesive layer 204 is formed thereon.

4 (c) according to another embodiment of the present invention, a reflective layer 401 and a fine pattern layer 402 are first formed on one surface of a base substrate 201, The structure in which the adhesive layer 204 is formed thereon after forming the coded pattern 202 is shown.

4 (d) according to another embodiment of the present invention includes a shielding film 203 formed thereon after a coded pattern 202 is formed on one surface of a base substrate 201 A structure in which a reflective layer 401 and a fine pattern layer 402 are formed on the other side of the base substrate 201 on the opposite side and another coded pattern 202 is formed thereon and then an adhesive layer 204 is formed thereon . The reflective layer 401 and the fine pattern layer 402 are formed between the base substrate 201 and the coded pattern 202 on the one side of the base substrate 201 on which only the coded pattern 202 is formed .

In the security film 400 having the structures (a) to (d) as described above, one or more coded patterns 202 and the reflective layer 401 / the fine pattern layer 402 ) Are formed irrespective of the stacking order. At this time, a shielding film 203 is formed on the coded pattern 202 and the reflective layer 401 / the fine patterned layer 402 on the surface of the base substrate 201 without the adhesive layer 204 (FIG. 4A) the coded pattern 202 or the reflective layer 401 / the fine pattern layer 402 is formed on the surface of the base substrate 201 on which the adhesive layer 204 for attachment to the product 100 is formed. The adhesive layer 204 may be directly formed on the pattern 202 or the reflective layer 401 / the fine pattern layer 402 coded immediately without the shielding film 203 (FIG. 4 (b), (c) the adhesive layer 204 may be formed after the shielding film 203 is formed on the reflective layer 401 / the fine pattern layer 402, though not shown in the drawing. The adhesive layer 204 may also be omitted in some cases. In some cases, the shielding film 203 may be formed on the base substrate 201, and the coded patterns 202 and the reflective layer 401 / the fine patterned layer 402 may be formed thereon.

4 (a) to 4 (d), the security film 400 of the present invention is manufactured in the form of a hot stamping foil as shown in FIGS. 4 (e) and 4 (f) Such as the product 100, to the surface of the adherend. As described in the description of FIG. 3, for example, a security film (e.g., 400) manufactured by the method of the present invention is placed on the surface of an object, such as product 100, When pressure is applied, only the core portion 400 'except for the base substrate 201 is permanently attached to the product or the adherend 100, and it is difficult to remove the core portion 400' once it is attached.

4 (a) to 4 (f), a coded pattern 202 is formed under the reflective layer 401 / the fine pattern layer 402 and the coded pattern 202 is formed of a material that absorbs infrared rays It is preferable that the reflective layer 401 is formed of a medium such as zinc sulfide (ZnS) having an excellent transmittance in the infrared region. When the reflective layer 401 is formed of a metal material such as aluminum (Al), gold (Au), silver (Ag) or copper (Cu), most of the infrared rays are reflected from the reflective layer 401 And it becomes difficult to detect the coded pattern 202 located thereunder.

4 (a) and 4 (b), when the coded pattern 202 is positioned above the reflective layer 401 (when attached to the product) and the reflective layer 401 is made of aluminum The coded pattern 202 may be formed of a material that absorbs infrared rays or a specific wavelength sensitive material such as infrared light absorbing material such as infrared light absorbing material And a reflective material, a material that absorbs electromagnetic waves in a specific wavelength band and emits electromagnetic waves in the same wavelength band or electromagnetic waves in a shorter or longer wavelength band). In this case, it is possible to visually observe that the coded pattern 202, which has not been seen before illumination, is emitted with a relatively long wavelength, such as a visible light, by illuminating light having a relatively high energy such as ultraviolet rays and a short wavelength, The fluorescently coded pattern 202 can then be detected by a device such as a conventional camera. Otherwise, if the coded pattern 202 is formed of an infrared absorbing material, even if the coded pattern 202 absorbs infrared rays and is observed in black in an infrared detector (e.g., 700), the infrared rays reflected from the reflective layer 401 are gray It is difficult to detect and decode the coded pattern 202 because the relative contrast ratio is low. However, it is also possible to utilize a method capable of facilitating the detection of the coded pattern 202 by processing with an efficient image processing algorithm or the like in the detection process.

4D, when at least one coded pattern 202 is formed on both sides of the base substrate 201 (the reflective layer 401 / the fine pattern layer 402) One or more of the coded patterns 202 formed on each surface and the fine pattern layer 402 may form information on the product 100 such as a production history, a distribution route, and authenticity It is possible to display one piece of code information as product identification information so as to be able to identify or track the pattern 202 or any part of the patterned pattern 202 or the fine pattern layer 402 thus lost or damaged, So that the security can be further improved.

In order to prevent forgery and tampering and to enhance security, in the security film 400 of FIG. 4 (d), for example, one code for confirming or tracking information related to the product 100 may include two or more parts And may be formed as a coded pattern 202 or a fine pattern layer 402 on both sides of the base substrate 201. For example, the information detected in the coded pattern 202 or the fine pattern layer 402 formed on one side of the base substrate 201 through the detection device 700 and the coded pattern 202 formed on the opposite side thereof The information detected in the fine pattern layer 402 may be combined to serve as a single code.

5 is a view for explaining the structure of various security films 500 having a coded pattern according to another embodiment of the present invention.

5A and 5F show a case in which one or more coded patterns 202 are formed on one surface of a colored or transparent base substrate 201 made of a material as described above. 5F shows a case where the image array layer 502 and the coloring layer 503 are formed on different surfaces of the lens array layer 501 and the base substrate 201, / Coloring layer 503 is formed on the same side of the lens array layer 501 and the base substrate 201 as shown in Fig. 5 (b), 5 (c), 5 (d) and 5 (e) show a case in which one or more coded patterns 202 are provided on both sides of the base substrate 201, (c) shows a case where the image array layer 502 / colored layer 503 is formed on the other surface of the lens array layer 501 and the base substrate 201, and (d) and (e) Is a case in which the image array layer 502 / coloring layer 503 is formed on the same side of the lens array layer 501 and the base substrate 201.

Here, the coded pattern 202 may be an invisible material (possibly visible material) such as a one-dimensional bar code, a QR code, a two-dimensional bar code, a text, an image, The image array layer 502 may be a one-dimensional array of any text (including numbers), images, etc., or a square array of images or the like to represent identification information for the product 100 A Bravais lattice array such as a rectangular array, a hexagonal array, and a parallelogramar array, and is formed into a concave or convex embossed shape corresponding to the focusing position by each lens of the lens array layer 501 (It can be formed in a similar form to the fine pattern layer 402 in Fig. 4). The size of the text (including numbers), image, etc. of the image array layer 502 is formed to be the same or similar size as the size of each lens of the lens array layer 501. The detection device 700 can recognize the corresponding identification information from the images synthesized by the respective lenses of the lens array layer 501 focused on each image of the image array layer 502. [ This image array layer 502 may be formed to an original detectable reference size (e.g., a recognizable standard size, or a defined area) so that it can be detected (or magnified) without magnification through a reader (Including numbers), an image, or another coded pattern different from the coded pattern 202 may be formed in combination with the coded pattern 202. In this case, The identification information for the product 100 can be displayed. In some cases, each image in the image array layer 502 may have a reduction magnification of less than or equal to 1 times the reference magnitude detectable by the reader (or detection device 700), such as 1 to 1 / 1000). ≪ / RTI >

The lens array layer 501 also comprises a two-dimensional Bravais lattice arrangement, such as a one-dimensional arrangement of a plurality of microlenses, or a square arrangement, a rectangular arrangement, a hexagonal arrangement, and a parallelogram arrangement, A symmetrical lens, a lens having a polygonal base, or any type of lens having an optical focusing function, such as a cylindrical lens. The lens may be a refracting lens having a predetermined thickness as shown in Fig. 5, A diffractive lens which functions as a focusing lens by diffraction, or a GRIN lens which is made to have a gradient index refractive index.

The colored layer 503 may be formed adjacent to the image array layer 502 as the imaging means for the image array layer 502 to make each image more visible and may be formed at the top or bottom of the image array layer 502 And can be formed by a printing method or the like using a special color ink such as an infrared ink, a fluorescent ink, a magnetic ink, a specific wavelength sensitive ink, or an anti-Stock's ink. Alternatively, it may be formed by applying a coloring material or a metal coating by vacuum evaporation or the like so as to realize various colors.

5 (a) according to another embodiment of the present invention includes a lens array layer 501 formed on one side of a base substrate 201, and the opposite side of the base substrate 201 A structure in which an image array layer 502 and a colored layer 503 are formed on a surface of the substrate 501 and a coded pattern 202, a shielding film 203 and an adhesive layer 204 are sequentially formed thereon.

5 (b) according to another embodiment of the present invention includes a coded pattern 202 formed on one surface of a base substrate 201 and a lens array layer 501 formed thereon , A structure including a coded pattern 202 formed on the opposite side of the base substrate 201 and an image array layer 502 / coloring layer 503 formed thereon and an adhesive layer 204 formed on the image array layer 502 / .

5 (c) according to another embodiment of the present invention includes a pattern 202, a lens array layer 501, a reflective layer 401, and a reflective layer 402 coded on one surface of a base substrate 201, (See FIG. 4), and an adhesive layer 204 are sequentially formed on the base substrate 201. An image array layer 502 / coloring layer 503 is formed on the opposite side of the base substrate 201, (203) are formed.

5 (d) according to another embodiment of the present invention is formed by forming an image array layer 502 / coloring layer 503 on one surface of a base substrate 201, The array layer 501 is formed and a coded pattern 202 is formed on the opposite side of the base substrate 201 and then a shielding film 203 and an adhesive layer 204 formed thereon are formed.

5 (e) according to another embodiment of the present invention is formed by forming an image array layer 502 / coloring layer 503 on one side of a base substrate 201, A pattern 202 formed on the opposite side of the base substrate 201 and then a shielding film 203 and an adhesive layer 204 formed thereon are formed on the opposite side of the base substrate 201 .

5 (f) according to another embodiment of the present invention is formed by forming an image array layer 502 / coloring layer 503 on one side of a base substrate 201, The shield layer 203 formed on the pattern layer 202 is formed on the opposite side of the base substrate 201. The pattern layer 202 is formed on the opposite side of the base layer 201, Lt; / RTI >

5 (a) to 5 (f), the one or more coded patterns 202 and the image array layer 502 / coloring layer 503 ) Is formed (irrespective of the stacking order), and the lens array layer 501 can be formed on either side. At this time, a shielding film 203 is formed after the image array layer 502 / coloring layer 503 and the coded pattern 202 are formed on the surface of the base substrate 201 without the adhesive layer 204 coded patterns 202 and an image array layer 502 and coloring layers 202 are formed on the surface of the base substrate 201 on which the adhesive layer 204 for attachment to the product 100 is formed. The adhesive layer 204 may be directly formed on the pattern 202 or the image array layer 502 / coloring layer 503 directly coded without the shielding film 203 on the light blocking layer 503 (refer to FIG. 5B) The adhesive layer 204 may be formed after the shielding film 203 is formed on the coded pattern 202 or the image array layer 502 or the coloring layer 503 , (e)). The adhesive layer 204 may also be omitted in some cases. In some cases, the shielding film 203 may be formed on the base substrate 201, and then the patterned image 202, the image array layer 502, and the colored layer 503 may be formed thereon. The lens array layer 501 may be formed on the coded pattern 202 or the image array layer 502 / coloring layer 503 of the base substrate 201 and a reflective layer 401 may be formed thereon .

5 (c) and 5 (f), the reflecting layer 401 is formed of a metal reflecting infrared rays such as aluminum (Al), gold (Au), silver (Ag) The coded pattern 202 may be formed of a material that absorbs infrared rays or a specific wavelength sensitive material (infrared absorption and reflection material, electromagnetic wave of such wavelength band that absorbs electromagnetic waves of a specific wavelength band, A substance that emits an electromagnetic wave of a shorter or longer wavelength band). In this case, when the light having a relatively high energy such as ultraviolet light and a short wavelength is illuminated, it is possible to visually observe that the coded pattern 202, which has not been seen before illumination, emits light with a relatively long wavelength such as visible light , The fluorescently coded pattern 202 can be detected by a device such as a general camera. Otherwise, if the coded pattern 202 is formed of an infrared absorbing material, even if the coded pattern 202 absorbs infrared rays and is observed in black in an infrared detector (e.g., 700), the infrared rays reflected from the reflective layer 401 Since the relative contrast ratio is low because it can be observed in gray, it may be difficult to detect and decode the coded pattern 202. [ However, it is also possible to utilize a method capable of facilitating the detection of the coded pattern 202 by processing with an efficient image processing algorithm or the like in the detection process.

When the coded pattern 202 is formed of a material that absorbs infrared rays, it is preferable that the reflective layer 401 is formed of a medium having excellent transmittance in the infrared region, such as zinc sulfide (ZnS). If the reflective layer 402 is formed of a metal material such as aluminum (Al), gold (Au), silver (Ag) or copper (Cu), most of the infrared rays are reflected from the reflective layer 401 And it becomes difficult to detect the coded pattern 202 located thereunder.

5A, 5B, 5C, 5D and 5E, when at least one coded pattern 202 is formed on both sides of the base substrate 201 The array layer 502 and the coloring layer 503 may be formed on one or both surfaces), and at least one of a combination of the coded pattern 202 formed on each surface and the image array layer 502 may be a production history, The code image 202 can be displayed as product identification information for identifying or tracking the information related to the product 100 such as the authenticity or the authenticity of the image 202. Thus, Even if a part is lost or damaged, the information can be confirmed by a pattern remaining on either side of the two sides, so that the security can be further improved.

5 (b), 5 (c), 5 (d), and 5 (e), in order to prevent forgery and falsification and enhance security, information May be divided into two or more portions so as to be formed as a patterned pattern 202 or an image array layer 502 on both sides of the base substrate 201, respectively. For example, the coded pattern 202 formed on one side of the base substrate 201 through the detection device 700 or the coded pattern 202 formed on the opposite side of the information detected in the image array layer 502 Information detected in the fine pattern layer 401 may be combined to serve as a single code.

The security film 200/300/400/500 using the coded pattern 202 according to the present invention as described above is attached to one side of the adherend, that is, the side of the product 100 (outer side) using the adhesive layer 204 However, in order to enhance the appearance of the product (100) and maximize the security through integration, a special injection molding method such as an inmold injection molding method is used to manufacture a security film It may be integrated. Using in-mold injection has several advantages over other methods. These benefits include design flexibility, multi-color, stereoscopic effect and texturing in a single operation, manufacturing productivity and long-lasting graphics, and reduced system cost. In-mold injection is performed in the order of product case transfer, substrate fixing, material injection, and product removal. When the security film using the coded pattern 202 is placed inside the mold and the mold is closed, injection resin is injected and the product is made by heat and pressure. At this time, since the security film and the injection product using the coded pattern 202 are integrally formed, it is possible to maximize the security effect because it is very difficult to falsify and modulate. Any type of film can be applied to the security film using the coded pattern for integrating and integrating the articles in the above-described manner, irrespective of the construction described in the embodiment shown in Figs. 2 to 5.

6 is a conceptual diagram of a detection device 700 for detecting a coded pattern 202 of a security film 200/300/400/500 (or 600) according to the present invention.

6, a detection apparatus 700 according to an exemplary embodiment of the present invention includes at least one light source 601, a bandpass filter 603, a polarization filter 604, a magnetic sensor 605, an optical system 602, An image sensor 606 and a display device 607 and may further include a processor for processing and decoding the electrical signal output from the image sensor 606 or the magnetic sensor 605. [

The detection device 700 is for extracting the identification information from the coded pattern 202 formed on the security film as described in the description of Fig. 2. The detection device 700 mainly describes the detection of the coded pattern 202 in this case. 3, 4, and 5, the image information layer 301, the fine pattern layer 402, the image array layer 502 through the lens array layer 501, and the like are detected by a predetermined reader And the detection device 700 may be further provided with an image information layer 301, an image sensor 606, a display device 607, and a processor or the like, (402), and the image or pattern of the lens array layer (501). As described above, the identification information detected from the image or pattern of the image information layer 301, the fine pattern layer 402, and the image array layer 502 is combined with the identification information detected from the coded pattern 202, Of the identification code.

6, one or more light sources 601 may be provided, and electromagnetic waves (e.g., light of a specific wavelength band such as visible light, infrared light, and ultraviolet light) may be transmitted through the coded pattern 202 of the security film 600 It is a means to investigate. As described above, in the case where the coded pattern 202 includes a specific wavelength sensitive material which reacts with electromagnetic waves of a specific wavelength not visually observed, a polarizing material capable of imparting polarization to electromagnetic waves, and the like, the light source 601 ) May be used to irradiate the coded pattern 202 with suitable electromagnetic waves to cause absorption, reflection, or electromagnetic or polarized electromagnetic waves of the same or different wavelength band as described above to be emitted from such materials.

The bandpass filter 603 is a means for reflecting or transmitting the electromagnetic wave of a specific wavelength band emitted from the coded pattern 20. When the coded pattern 202 includes a substance or the like which reacts to an electromagnetic wave of a specific wavelength which is not observed with the naked eye, the band pass filter 603 may reflect or transmit a specific wavelength band of the electromagnetic wave emitted therefrom .

The polarizing filter 604 is a means for absorbing, reflecting, or transmitting polarized electromagnetic waves emitted from the coded pattern 202. The polarizing filter 604 can transmit only the electromagnetic waves of a specific polarized state among the electromagnetic waves emitted from the coded pattern 202 when the coded pattern 202 includes a polarizing material or the like capable of imparting polarization to electromagnetic waves that are not observed with the naked eye Or absorption or reflection.

The magnetic sensor 605 is a means for detecting a magnetic signal from the coded pattern 202. [ The magnetic sensor 605 detects a magnetic signal emitted from the coded pattern 202 in the case where the coded pattern 202 includes a magnetic material capable of responding to a magnetic field that is not observed with the naked eye, and generates an electrical signal corresponding to the code And amplified and output.

The optical system 602 may include one or two or more lenses as means for outputting an image (image) output from the bandpass filter 603 or the polarization filter 604 in an enlarged image at least 1 times (for example, 1 to 1000 times) .

The image sensor 606 is a means for detecting an image formed by the optical system 602. [ The image sensor 606 can be used to detect the position of the coded pattern 202 when the coded pattern 202 includes a specific wavelength sensitive material that responds to electromagnetic waves of a specific wavelength not visible to the naked eye, a polarizing material that can impart polarizability to electromagnetic waves, (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) image sensor as means for detecting an image formed through the CCD 602 and generating or amplifying an electrical signal corresponding to the code.

When the electric signal is detected through the image sensor 606 or the electromagnetic signal is detected through the magnetic sensor 605 with respect to the coded pattern 202, the display device 607 processes the electrical signal and codes The enlarged image of the pattern 202 can be displayed on a display means such as an LCD. Alternatively, the predetermined processor may output a predetermined digital value as corresponding identification information (identification information for the product) corresponding to the coded pattern 202 according to a decoding algorithm. In some cases, the enlarged image displayed on the display device 607 may be read using a general reader, and may include a one-dimensional bar code, a two-dimensional bar code (including a QR code), various text information including numbers, And output a digital value of the identification information.

As described above, the security film (200/300/400/500) according to the present invention is reduced to a size smaller than the original detectable reference size, and is made of a specific wavelength sensitive material, a polarizing material, It is possible to prevent forgery and falsification and increase security. Such a coded pattern 202 may be applied to a plurality of locations of the security film 200/300/400/500 so as to be located and attached to various locations of the product 100 to prevent the risk of removal . By using not only the coded pattern 202 but also the image information layer 301, the fine pattern layer 402, the image array layer 502 and the like as one code (identification information) You will be able to increase your sex. Such a security film 200/300/400/500 may be used integrally with the product 100 such as a high-grade brand product, a genuine product, or other logistics product by injection molding or the like, and may be enlarged through the detection device 700 It can be used to check or track various information related to products such as production history, distribution route, authenticity, etc. by decoding.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. It is possible. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the equivalents of the appended claims, as well as the appended claims.

100: product or article to which security film is attached
200, 300, 400, 500, 600: Security film
202: coded pattern
301: Image information layer
402: fine pattern layer
502: Image array layer
700: Detector
601: Light source
602: Optical system
603: Bandpass filter
604: polarizing filter
605: magnetic sensor
606: Image sensor
607: Display device

Claims (32)

And at least one coded pattern formed on one or both sides of the base substrate,
Wherein the coded pattern is formed by a material having a small magnification with a reduction magnification of at least 1 times smaller than a reference size detectable by a reader without magnification and by a material not visible to the naked eye under visible light illumination,
The coded pattern is a pattern representing identification information for a product,
A security film for outputting or decoding a signal by detecting a signal from the coded pattern through a detection device so that the identification information is extracted. The method according to claim 1,
Wherein the coded pattern comprises a one-dimensional bar code, a QR code, a two-dimensional bar code, a text, an image, or a hologram form. The method according to claim 1,
Wherein the reduction magnification is 1/1 to 1/1000. The method according to claim 1,
And a shielding film formed on the coded pattern after the coded pattern is formed. The method according to claim 1,
Further comprising an adhesive layer on a surface of the base substrate on which the coded pattern is not formed. The method according to claim 1,
Further comprising an adhesive layer formed thereon for attachment to the article after the coded pattern is formed or a shielding film and an adhesive layer sequentially formed thereon after the coded pattern is formed. At least one coded pattern and an image information layer formed on one or both sides of the base substrate,
Wherein the image information layer is formed by a material that is observed with the naked eye,
The coded pattern is a pattern representing identification information for a product,
Wherein the coded pattern is formed in a small size with a reduction magnification of at least 1 times smaller than a reference size detectable by a reader without enlargement and formed by a material not visible to the naked eye under visible light illumination. 8. The method of claim 7,
Characterized in that identification information for a product is obtained by a combination of identification information detected from the image information layer through a detection device and identification information extracted by decoding or outputting an image by detecting a signal from the coded pattern film. 8. The method of claim 7,
Wherein the coded pattern and the image information layer are formed adjacent to each other or spaced apart from each other by a predetermined distance. 8. The method of claim 7,
Wherein the image information layers are sequentially stacked on the coded pattern or the coded patterns are sequentially stacked on the image information layer. And at least one coded pattern and a fine pattern layer formed on one or both sides of the base substrate,
The fine pattern layer is formed in an embossed pattern so as to be observed with the naked eye,
The coded pattern is a pattern representing identification information for a product,
Wherein the coded pattern is formed in a small size with a reduction magnification of at least 1 times smaller than a reference size detectable by a reader without enlargement and formed by a material not visible to the naked eye under visible light illumination. 12. The method of claim 11,
Characterized in that identification information for a product is obtained by a combination of identification information detected from the fine pattern layer through a detection device and identification information extracted by decoding or outputting an image by detecting a signal from the coded pattern film. 12. The method of claim 11,
Wherein the fine pattern layer is formed on the coded pattern or the coded pattern is formed on the fine pattern layer. 14. The method of claim 13,
And a reflective layer formed of a metal material before or after the formation of the fine pattern layer. 15. The method of claim 14,
Wherein when the coded pattern is formed of a material that absorbs infrared rays, the reflective layer is formed of a material that transmits infrared rays. 15. The method of claim 14,
When the reflective layer is formed of a material that reflects infrared rays, the coded pattern absorbs infrared rays or electromagnetic waves of a specific wavelength band, and absorbs electromagnetic waves of the same wavelength band or electromagnetic waves of a shorter or longer wavelength band Wherein the protective film is formed of a material that emits light. Includes a lens array layer having one or more coded patterns and an image array layer formed on one or both sides of a base substrate and having respective lenses at positions corresponding to respective images of a one- or two-dimensional array of the image array layers In addition,
The coded pattern is a pattern representing identification information for a product,
Wherein the coded pattern is formed in a small size with a reduction magnification of at least 1 times smaller than a reference size detectable by a reader without enlargement and formed by a material not visible to the naked eye under visible light illumination. 18. The method of claim 17,
A combination of image identification information detected by each lens of the lens array layer focused on each image of the image array layer through a detection device and identification information extracted or output as an image by detecting a signal from the coded pattern To obtain identification information about the product. 18. The method of claim 17,
Wherein the image array layer or the lens array layer is formed on the coded pattern or the coded pattern is formed on the image array layer or the lens array layer. 18. The method of claim 17,
Further comprising a colored layer formed of a colored or metallic material before or after the formation of the image array layer. 18. The method of claim 17,
And a reflective layer formed of a metal material on the lens array layer. 22. The method of claim 21,
Wherein when the coded pattern is formed of a material that absorbs infrared rays, the reflective layer is formed of a material that transmits infrared rays. 22. The method of claim 21,
When the reflective layer is formed of a material that reflects infrared rays, the coded pattern absorbs infrared rays or electromagnetic waves of a specific wavelength band, and absorbs electromagnetic waves of the same wavelength band or electromagnetic waves of a shorter or longer wavelength band Wherein the protective film is formed of a material that emits light. 18. The method according to any one of claims 1, 7, 11, and 17,
And a coded pattern formed on one side of the base substrate through a detection device and a coded pattern formed on the other side of the base substrate to serve as a code indicating identification information on the product. . 18. The method according to any one of claims 1, 7, 11, and 17,
Wherein at least two coded patterns formed on one or both sides of the base substrate are made of a material that reacts with electromagnetic waves of a specific wavelength, a polarizing material that can impart polarization to electromagnetic waves, or a magnetic material that can react with a magnetic field ≪ / RTI > 18. The method according to any one of claims 1, 7, 11, and 17,
Wherein the coded pattern is formed of a coating comprising a material responsive to electromagnetic waves of a particular wavelength. 18. The method according to any one of claims 1, 7, 11, and 17,
Wherein the coded pattern is made of any one of a material that absorbs or reflects infrared rays, a material that absorbs electromagnetic waves of a specific wavelength band, and emits electromagnetic waves of the same wavelength band or electromagnetic waves of a shorter or longer wavelength band Security film. 18. The method according to any one of claims 1, 7, 11, and 17,
Wherein the coded pattern is formed of a coating material comprising a polarizing material capable of imparting polarizability to electromagnetic waves. 18. The method according to any one of claims 1, 7, 11, and 17,
Wherein the coded pattern is formed of a coating comprising a magnetic material capable of reacting to a magnetic field. A product in which the security film of any one of claims 1, 11, 15, and 21 is attached to one surface or injection molded into an integrated product. A detection device for extracting identification information from a coded pattern formed on a security film,
At least one light source for irradiating an electromagnetic wave with a coded pattern of the security film; And a polarizing filter for absorbing, reflecting, or transmitting the polarized electromagnetic wave emitted from the coded pattern, and a polarizing filter for transmitting or reflecting the polarized electromagnetic wave emitted from the coded pattern, / RTI >
An optical system for outputting the bandpass filter or the image output from the polarizing filter to an image magnified by one or more times; And an image sensor for detecting an image formed by the optical system,
Wherein the security film comprises at least one coded pattern formed on one or both sides of the base substrate and the coded pattern is formed in a small size with a reduction magnification of at least one times smaller than a reference size detectable by a reader without magnification, Lt; RTI ID = 0.0 >
Detecting a signal through the image sensor with respect to the coded pattern, and outputting or decoding an enlarged image of the coded pattern as an image and extracting corresponding identification information. 32. The method of claim 31,
Further comprising a magnetic sensor for detecting a magnetic signal from the coded pattern and detecting a signal through the magnetic sensor and outputting or decoding the magnified image of the coded pattern as an image to extract the corresponding identification information And the detection device.

Images