KR101165305B1 - Security filter and manufacturing method thereof - Google Patents

Abstract

The present invention relates to an information security device and a manufacturing method thereof, comprising: a first film layer; And
And a blind layer having a plurality of electrochromic parts arranged at a predetermined angle on one or both surfaces of the first film layer. According to the present invention, a computer monitor, an ATM, a navigation device, a mobile phone, a PD, etc., installed on the screen of the video device, or installed on the building glass, etc. other than the user of the video device, the image output on the screen to others If the image is not visible and security is required, it operates normally as a security device to prevent people from seeing the screen, and when security is not required, it becomes a normal mode without removing the security device so that the surrounding people can see the screen. Provides information security device and harmful electromagnetic wave shield (hereinafter referred to as 'security device') and its manufacturing method that prevents screen blur and glare caused by external light reflected on the device and glass, etc. do.

Description

Information security device and manufacturing method thereof

The present invention relates to an information security device in which an image displayed on a monitor or the like cannot be viewed except at the front or a predetermined angle.

In recent years, the active dissemination of personal computers and the establishment of computer networks through the network have made it easier to process the work of individuals and companies. That is, when a user inputs predetermined information through an input device such as a keyboard or a mouse, the result is output to the monitor. Therefore, it is becoming very convenient to prepare personal documents, read book materials in libraries, trade money at ATMs of banks and financial institutions, and perform various tasks with mobile phones, PDs, etc.

However, in the situation where people are passing by frequently, it processes various kinds of video devices such as mobile phones, ATMs, PDs, etc., or enters passwords to monitor money at ATMs. Printing or doing a variety of tasks with a mobile phone is very anxious to expose information by people around you.

In addition, as the window glass surface of buildings and the like grows for lighting and vision, it is urgently needed to protect privacy and the like while securing visibility and lighting.

Therefore, the image displayed on the screen can be easily seen by the user, but there is a need for an information security device that prevents users from viewing the image displayed on the screen from angles of people located near the screen.

In addition, the necessity may be equally applied to various display devices in which various screens are provided in addition to the aforementioned devices.

However, there is a problem that the security film for preventing the viewing of the image output on the screen from the angle of the people located around the conventional screen is not variable according to the situation. In other words, even though several people must see the screen together, the security film is installed so that the people around can not see the screen properly. As a result, the security film has to be removed and reattached, and frequent desorption causes problems in durability or adhesion. On the other hand, in some cases, even if the security film is not possible to remove at all.

Accordingly, an object of the present invention is to operate as a security device normally in a situation where security is required, so that the surrounding people can not see the screen, and when the security is not required, the user can see the screen in a normal mode without removing the security device. To provide security.

Security device according to the present invention to achieve the above object, the first film layer; And

And a blind layer having a plurality of electrochromic parts arranged at a predetermined angle on one or both surfaces of the first film layer.

The apparatus may further include an omnidirectional blind layer in which an omnidirectional security mode is provided to block an image emitted to the front, and the electrochromic part is formed entirely through local driving. Local security can be enabled.

The electrochromic part may be changed to a darker color when power is applied (On), or, on the contrary, the electrochromic part may be changed to a darker color when the power is turned off.

The electrochromic parts may be driven integrally with each other, and power on-off may be independently driven to enable local security.

The electrochromic part includes a lower electrode, an upper electrode, and an electrochromic material and an ion conductor positioned between the lower electrode and the upper electrode. The electrochromic material is characterized in that it comprises one or more of WO ₃ , NiO _x H _y , Nb ₂ O ₅ , V ₂ O ₅ , TiO ₂ , MoO ₃ and polyaniline.

The width of the electrochromic portion is 5-100㎛, the height is 10-250㎛, the interval between the electrochromic portion may be 20-185㎛. For example, when the width of the electrochromic portion is 10 μm, the distance between the electrochromic portions is 50 μm, and the height is 180 μm, the electrochromic portion may shield 100% of light, and thus may have a viewing angle of 16 °. However, the viewing angle may be wider if the electrochromic portion fails to shield 100% light.

On the other hand, it may further include a second film layer attached to the blind layer to reinforce the first film layer, attached to the opposite side of the blind layer forming of the first film layer to reinforce the first film layer It may further include a third film layer, it may further include a polarizing film which is directly laminated laminated on the image exit surface of the security device or spaced apart through the coupling means.

On the other hand, at least one layer constituting the security device is characterized in that it further comprises an image expression layer for implementing an image that is visible below a certain viewing angle of the user.

In addition, a part of the electrochromic part of the blind layer is formed on the first film layer, and the remaining part is formed on the second film layer, and then the divided and the electrochromic part formed so as to overlap each other. The film layer is bonded.

On the other hand, anti-reflection coating, anti-static coating, anti-static coating, anti-radiation coating, anti-radiation coating, line polarizer coating, anti-scratch coating, neutralization filter It characterized in that it further comprises one or more layers selected from the group consisting of a coating layer (neutral density filter coating), and a linear polarizer (Line polarizer).

In addition, one or more layers constituting the security device may be anti-reflection, anti-static, anti-static, anti-radiation, sun polarizer, scratch resistant, sharpness. It is characterized in that it is configured to include one or two or more of the components having a strengthening, or line polarizer function.

In addition, it may be a security device characterized in that it further comprises a coupling means for detachably coupling to the security object.

On the other hand, providing a first film layer; And forming an electrochromic part blocking an incident image according to a voltage applied (On) or off (Off) at predetermined intervals on one or both surfaces of the first film layer. Provide a method.

In addition, preparing a first film layer; Forming a part of the electrochromic part blocking the incident image according to a voltage applied (On) or off (Off) at predetermined intervals on one or both surfaces of the first film layer; Preparing a second film layer;

Forming the remaining components of the electrochromic part at predetermined intervals on one or both surfaces of the second film layer; And bonding and laminating the first film layer and the second film layer so that the electrochromic parts formed on the first film layer and the second film layer, respectively, overlap each other. do.

Part or all of the electrochromic portion is characterized in that formed by printing.

The printing of the electrochromic unit may include: manufacturing an original film for making a plate for printing the electrochromic unit; Manufacturing a plate for printing by applying the plate-making original film; And printing the electrochromic part on one side or both sides of the first film layer or the second film layer by using the printing plate. The manuscript manuscript film is characterized in that it is produced with a resolution of 20,000 dpi or more and 400 dots or more.

The printing plate making is one-stop roll-to-roll plate making, printed electronic plate making, fine printing plate making, PCB screen plate making, offset printing plate making, gravure plate making, roller plate making, UV plate making, plate making plate, rotary screen plate making, gravure plate making or display It is a roll roll for metal, It is characterized by the above-mentioned.

The printing step is a fine precision UV printing process, one-stop roll-to-roll printing process, printed electronic process, fine printing process, flat screen printing process, roll screen printing process, PCB screen printing process, offset printing process, gravure printing process or roller Characterized in that the manufacturing method of the security device, characterized in that made through the printing process. The printing step may be carried out at a temperature of 10 ~ 35 ℃ and humidity of 15 ~ 65%.

The preparing of the first film layer or the second film layer may include a solvent consisting of 10 to 60 wt% of urethane or silica component resin and one or more components of bimethyl formamide (BMF), methyl ethyl ketone (MEK), and toluene. It is preferable to include an initial coating step of increasing the tension of the film fabric by coating an entire or a portion of the film fabric surface with Ahanka as the primary coating material composed of ˜90 wt%.

The initial coating step may be made through a flat silk screen coating process, a one-stop roll-to-roll coating process, a vaporized spray coating process, a gravure coating process, a UV coating process, or a roller coating process.

In addition, the step of laminating one or more layers of the third film layer, the polarizing film and the protective film; Drying and curing the laminated film layer; Cooling the dried and cured film layer; And it provides a method for producing a security device, characterized in that it further comprises the step of thomson and cutting the cooled film layer.

In the film layer lamination step, anti-reflection coating (anti-reflection coating), anti-static coating (anti-static coating), anti-radiation coating (anti-radiation coating), UV protective coating (Line Polarizer Coating), scratch It is preferable to further include one or more layers selected from the group consisting of an anti-coat layer, a neutral density filter coating layer, and a line polarizer.

In addition, manufacturing an original film for making a plate for printing the electrochromic portion blocking the incident image; Manufacturing a plate for printing by applying the plate-making original film; Coating a part of an electrochromic part on a fabric using the printing plate; And mating a partial configuration of the electrochromic portion formed on the fabric on one or both surfaces of the first film layer, followed by heat pressing and transferring to form a partial configuration of the electrochromic portion on one or both surfaces of the first film layer. It provides a method for manufacturing a security device comprising repeating the above steps to form an electrochromic portion.

The present invention also provides a display device having the security device. The display device may be a portable terminal, a monitor, a notebook computer, a DTV, or an IPTV.

The on-off function of a power source applying and blocking a voltage to an electrochromic part of the security device may be implemented by an external button, a specific key, or a shortcut key of the display device. Alternatively, the on-off function of a power source applying or blocking a voltage to an electrochromic part of the security device may be controlled by a software program or may be implemented in conjunction with a predetermined program or task.

Alternatively, you can have security mode work automatically when a specific menu is selected or when you open a specific folder.

Alternatively, the display device may automatically set a security mode when a predetermined time elapses or when an external person operates, and input a preset password to terminate the security mode.

Alternatively, the on-off function of the power supplying and blocking voltage to the electrochromic device may be automatically set according to a user's selection.

Or it may be provided to be selected in a secure mode or a normal mode for a specific menu including a text reception confirmation, a text transmission confirmation, a photo album, or a video album.

The present invention may also allow the omnidirectional security mode, which is not visible from the front, to be made in the entire screen or a certain area. The certain area may be an area where a corresponding job is displayed when a specific job is performed.

According to the present invention, the security mode can be variably implemented through the electrochromic unit, so if the security mode is rather inconvenient, the security mode can be released, and the security mode can be set if the security mode is required. In addition, the present invention provides various control methods of power supply of the electrochromic unit for setting and releasing the security mode. In addition, the security function that the image is not visible only in the left and right side of the existing product, the security device of the present invention, as well as the left, right, side, and added the function that the image is not visible in the up and down direction, and optionally from the front It also added a function to hide the image. In addition, by adding a polarizing film, the beneficial function of the polarizing film was additionally applied to the security function of the present invention, and the image expression layer was applied to express the publicity image on the upper, lower, left, and right sides, and added various useful values when using the security device. By coating and depositing to provide clearer images with improved optical quality, adopting pressurization and heating processes for cutting the security device and Thompson, realizing quality improvement, and applying the initial coating, polishing, cooling, drying, and curing processes as necessary The diversification of security devices is realized.

By applying a large-area fine pattern high speed printing and homogenization technology to the blind layer forming printing or transfer process of the security device of the present invention, it is possible to maximize the production cost reduction effect by reducing the manufacturing time by simplifying the process.

1 is a cross-sectional view of a security device according to an embodiment of the present invention.
2 is a cross-sectional view of a security device according to another embodiment of the present invention.
3 is a plan view showing the parallel or lattice arrangement of the permeable membrane.
4 is a schematic cross-sectional view of an electrochromic device of a security device according to an embodiment of the present invention.
5 is a cross-sectional view of a security device according to another embodiment of the present invention.

Hereinafter, each exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings, and like reference numerals refer to like elements.

As shown in FIG. 1A, the security device 1 according to an exemplary embodiment of the present invention includes a first film layer 10 and a blind layer 15 including a plurality of electrochromic parts 60.

Electrochromic changes the light transmission characteristics by changing the color of the electrochromic pattern by an electric redox reaction caused by the application of an electric field, and changes the transparent and opaque state according to the voltage applied to the upper electrode and the lower electrode. Optionally implement The electrochromic part may change to a darker color when the power is applied (On), or may change to a darker color when the power is turned off depending on the electrochromic material. The latter is advantageous primarily when the secure mode is activated, and sometimes the former is advantageous when the secure mode is activated.

In addition, the electrochromic unit may be implemented to enable local security by driving the power on-off independently. In other words, the local security may be required only for the partial screen, not the entire screen, so that power can be independently provided to the electrochromic unit.

The specific configuration of the electrochromic unit 60 will be described later in detail.

In the security device according to the present invention, the electrochromic portion 60 is configured to be perpendicular to the surface of the first film layer 10 as shown in FIG. 1A, or the electrochromic portion 60 is shown in FIG. 1B. By forming a predetermined angle α with the surface of the first film layer 10, the target screen can be viewed only at a predetermined angle set according to the front surface or the purpose of use, the use, and the characteristics of the application device. .

Each of the electrochromic parts 60 may be arranged in parallel with each other in a direction such as up, down, left, or diagonal with a predetermined spacing, or may be arranged in a grid shape having up, down, left, or right angles.

In this case, the width, thickness, and spacing of the electrochromic unit 60 may be set and adjusted as necessary in connection with each other. In addition to the above angles, various colors and grid shapes according to the angles may be formed in various directions. .

The electrochromic part 60 may be formed on the surface of the first film layer 10 by a method of printing or transferring part or all of the components. The electrochromic part 60 may be printed or transferred onto one or both sides of the first film layer 10, and the electrochromic part 60 may be printed or transferred on both sides of the first film layer 10. As shown in 1c, the electrochromic parts 60 formed on both surfaces of the first film layer 10 may be formed at the same position to overlap each other to extend the thickness. When forming the electrochromic portion on both sides as shown in Figure 1c can reduce the printing height of the shielding layer can be solved the problem that the shielding layer is collapsed while maintaining the function of the security device when forming the electrochromic portion by printing or transfer method There is an advantage.

It may include a second film layer 20, a third film layer 30 or a polarizing film 40 provided in a layered form by thermal lamination on the blind layer forming surface and the other surface of the first film layer 10, As shown in FIG. 2A, the security device according to the present invention may further include a second film layer 20 attached to the blind layer 15 to reinforce the first film layer 10, and the second film layer. An adhesive layer may be further added between the blind layer 15 and the second film layer 20 for the attachment of the 20.

According to an embodiment of the present invention, part of the electrochromic part of the blind layer is formed on the first film layer, the remaining part is formed on the second film layer, and then divided so that the electrochromic parts formed separately The first film layer and the second film layer may be bonded. The blind layer formed of a plurality of electrochromic parts may be formed on one side or both sides of each layer of each of the first film layer 10 and the second film layer 20, and when formed on each side of both layers, the first film layer ( The electrochromic part 60a formed on the second layer 10 and the electrochromic part 60b formed on the second film layer 20 overlap each other to facilitate printing. At this time, the blind layer 15 on the first film layer and the blind layer 25 on the second film layer should be repeatedly printed or transferred in the same pattern (see FIG. 2B).

In addition, the security device according to the present invention may further include a third film layer 30 attached to the opposite surface of the blind layer 15 formed of the first film layer 10 to reinforce the first film layer 10, An adhesive layer may be further added between the first film layer 10 and the third film layer 30 to attach the third film layer 30 (see FIG. 2C).

In the security device according to the present invention, the first film layer 10, the second film layer 20, or the third film layer 30 is directly laminated on the image emitting surface or spaced apart through the coupling means 45. The polarizing film 40 may be further included (see FIGS. 2D and 2E), and the polarizing film 40 further diffuses and transmits the image transmitted through the blind layer, and is not shielded from the electrochromic portion. Polarization function to more clearly block the image or less shielded image, and if necessary, another polarization function may be added to the security device, and the reflection of the light of the polarizing film if necessary depending on the use purpose and purpose And refraction, linearity of light, law of reflection, total reflection and dispersion of light, polarization of light, prevention of surface reflection, and conversion of non-polarized light into linearly polarized light.

In the process of forming the image expression layer 50 visible only on the left, right, top, bottom side around the user of the security device, the first image in the same manner as the printing process for forming the blind layer with a desired color pigment When the image layer is formed on one or both sides of the film layer or the second and third film layers and the polarizing film layer, the image expressing layer 50 is difficult to see when the security device is viewed from the front. It is also possible to create an image representation layer 50 that is visible from the side (FIG. 2F).

In addition, in forming the image expression layer 50, after generating the image expression layer 50 in the same manner as the transfer process of the colored ink on the surface of the fabric (for example, paper fabric), the first film layer ( 10) or one of the second and third film layers 20 and 30 and the polarizing film layer 40 intersects with the surface of the image expression layer generated on the fabric, and then uses a thermal transfer machine on the back of the fabric to obtain a proper temperature and After applying pressure, the image expression layer formed on the fabric is transferred to one or both sides of the first film layer, the second and third film layers, and the polarizing film layer, and then the paper fabric is removed to form the image expression layer 50. Can be configured.

In addition, the blind layer (15 or 25) of the security device according to the present invention is that the electrochromic portion blocking the incident image is repeatedly arranged in a grid form of a parallel or predetermined angle at a predetermined interval, left and right in the form as shown in Figure 3a In the case of forming the electrochromic portion 60a or 60b in parallel, the screen is not visible in the vertical direction of the screen, as shown in Figure 3b when the electrochromic portion 60a or 60b is formed in parallel up and down You can set the screen to be invisible in the left and right directions. In addition, parallel electrochromic parts 60a or 60b may be configured to have a predetermined angle suitable for a purpose to prevent access at a particular angle, such as 45 degrees, 60 degrees, 75 degrees, and the like.

In addition, the electrochromic part 60a or 60b may be configured to be arranged in a lattice shape at a predetermined angle. As shown in FIG. 3D, the grid may be configured in the form of a grid formed at an angle of 90 degrees up, down, left, and right, and may be configured to have a grid shape described at a predetermined angle, such as 3e.

If the electrochromic parts are printed or transferred such that the electrochromic parts are arranged in parallel, as shown in FIGS. 3A, 3B, and 3C, the image of the monitor may not be easily seen within a predetermined angle except the front side. In addition, as shown in FIGS. 3D and 3E, when the electrochromic portions have a lattice shape, the image may not be easily viewed from an angle other than the front surface.

As such, when the image of the monitor is viewed from the front due to the blind layer formed on the first film layer or the first and second film layers, a clear screen can be seen without blurring or distortion of the image. When the image of the monitor is viewed at an oblique angle from the left and the right, the image of the monitor is blocked by the electrochromic part, so that the screen of the monitor is not visible.

The configuration of the present invention described above will be described in more detail below.

First, the first, second, third film layer and the polarizing film fabric required for manufacturing the security device of the present invention is prepared by adopting a material having a material, a standard, and a component required for manufacturing the security device. At this time, the thickness of the film is different depending on the purpose and use of the security device is usually in the range of 10 ~ 2,000㎛, may be various thickness as needed.

In addition, the material of the film fabric is polypropylene oxide, polyisocyanate, hydroxyethyl, polyvinyl chloride (PVC) having the appropriate resistance values for temperature, deformation, pressure, humidity, discoloration, etc. required in the manufacture of the security device. [polyvinylchloride], polyethylene terephthalate (PET), monoacrylate, polyacrylate, polymethyl methacrylate, polyurethane [{pu} polyurethane], polycarbonate [{pc} polycarbonate], polyethylene, methacrylate, poly Propylene [polypropylene], cellulose acetate butyrate (CAB), ethylene vinyl acetate (EVA), polyvinyl alcohol (PVA), acrylate, hydroxyethyl, propylene oxide and glass, acrylic or a copolymer thereof It is desirable to choose one of the properties.

In addition, among the fabrics of the first, second, and third film layers and the polarizing film, fabrics having elasticity such as urethane are vulnerable to shocks such as computer monitors, cell phones, LCD screens, glass of buildings, and the like, and are exposed to damage. It has the characteristic of protecting the screen such as liquid crystal from external impact and scratches of the core structures.

In the present invention, the electrochromic portion 60 is a lower electrode 65, the upper electrode 61, and the electrochromic positioned between the lower electrode 65 and the upper electrode 61 as shown in FIG. It may include a material 62, an ion conductor 63, and an ion storage layer 64. The ion storage layer may be omitted, and other layers may be further added. The electrochromic material is preferably a material with high contrast, and it is preferable to use a material that changes from a transparent material state to a dark state. Sometimes two or more materials can be used together. An electrochromic device (ECD) is an electrochromic device (ECD) that changes light transmission characteristics by changing a color of an electrochromic pattern by an electric redox reaction caused by application of an electric field, and is applied to a first transparent electrode and a second transparent electrode. Optionally implements transparent and opaque states based on voltage.

The lower electrode and the upper electrode may use a transparent electrode. The electrochromic material may include one or more of WO ₃ , NiO _x H _y , Nb ₂ O ₅ , V ₂ O ₅ , TiO ₂ , MoO _3, and polyaniline. The ion storage layer 64 may be replaced with an electrochromic material having a polarity opposite to that of the electrochromic material 60 and may be omitted in some cases, and the ion conductor 63 may be a liquid electrolyte, a gel electrolyte, a solid electrolyte, or a polymer. An electrolyte, an ionic liquid, and the like are used.

In order to prevent damage to each film layer constituting the security device according to the present invention may further include a protective film (Liner), the first film layer and the second film layer, the third film layer, or any one surface or In the bonding process of superimposing a double-sided adhesive layer or a surface protective protective film for protecting the film surface damage, the protective film to be used is selected from PP, PET, OPP, and PVC to a thickness of 2 to 30 μm on the film surface. It is preferable that the surface release treatment by PE coating.

Material of the general material at the time of coating the main coating material, such as printing the material for forming a part of the electrochromic part of the security device according to the present invention, printing image pigments for the image layer, adhesive coating for film lamination, adhesive for preparing the bonding means In the case of using a component, there is no need for the initial coating, but in the case of using a special purpose and purpose or a material and component of the material, depending on the chemical composition and characteristics of each material, The main coating material may be coated to prevent it from falling off and to separate the coating material from the film and the coating material raw material, type, chemical composition, and material so that each coating material is deposited on the film surface. A preliminary coating (primer coating) process may be performed before the process.

It is possible to increase the tension of the surface to be coated by Ahnka coating with a primary coating material mainly composed of a liquid urethane resin or silica, or to improve the surface tension of the coating by performing surface modification on the surface of the fabric by plasma treatment. .

Such a primary coating material is generally used for a film formed of a material which does not (settle) the main coating material on the film to be coated by the material, component, and surface condition when the main coating material is coated on the film to be coated. Film fabrics, such as PVC, are manufactured using resins, stabilizers, plasticizers, non-offset plasticizers, etc., during processing and manufacturing. Phenomenon, that is, white flower like pollen or oily liquid, pushes away the components of the main coating material coated on the surface, or the surface of the fabric of the material may be settled. Long-term function of coated main coating material prevents falling of coated material on material with low surface tension Function to keep the

The initial coating material is 10 to 60% by weight of the main component of the urethane and silica component resin depending on the film material to be coated and the surface tension conditions of the surface to be coated, the solvent used, non-methyl formamide (BMF), After interlocking 90% to 40% by weight of methyl ethyl ketone (MEK) or toluene, perform a dissolution process, set the temperature of the reactor in the range of 10 to 30 ° C, and connect the pump, motor and cooler to the reactor. Then, the stirring process is carried out at a pressure according to the requirements, and then aged through a aging process for 3 to 5 hours to produce the primary coating material as a low viscosity liquid phase.

On the other hand, in providing the adhesive resin, the adhesive and the pressure-sensitive adhesive used in the present invention, the adhesive layer 20 used for laminating the first, the second, the third, the film and the polarizing film is a hot melt copolymer, a hot melt air Ethylene vinyl acetate copolymer (EVA), polyamide, polyester, polyurethane, rubber and resin are rosin, ester feeling, terpene resin, paraffin wax of coumarone resin, microcrystalline wax as plasticizer DBP, diphenyl chloride, paraffin chloride, fillers are calcium carbonate, varistor, talc, kaolin, and antioxidants are paraalkyl phenols. And resin, wax and solvent were interlinked and mixed at a weight in the range of 5 to 95%, respectively, followed by a dissolution process, and a reactor temperature was set in the range of 15 to 105 ° C. Emitter, is connected after the condenser to the reactor, performing the stirring process at a pressure corresponding to the requirements, do the following, the aging step in the range 12-15 hours to manufacture.

The adhesives and adhesives are emulsion with Hot Melt Adhesive or Acrylic Adhesive with Conformability (curable, anti-curling) / Curling conditions for the film to be coated. It is preferable to adopt Type (emulsion type).

The adhesive 100 used when attaching the security device to the installation target screen is an acryl-based copolymer, which is an acryl-based main component, ethylhexyl acrylate monoma, butylacylate monoma, ethyl acrylate monoma, ethylacetate, methyl metacylate, acrylic The acid is interlinked and mixed with raw materials and solvents at 10 to 90% by weight, depending on the adhesion and adhesive strength required for the use of the product and the viscosity conditions required for the manufacture, and then the dissolution process is performed and the reactor temperature is 25 to 125 degrees Celsius. After setting the temperature range, the pump, the motor and the cooler are connected to the reactor, the stirring process is carried out at a pressure according to the requirements, and then the acrylic adhesive material is generated after the aging process in the range of 8 to 12 hours. By coating on the security device, it can be easily detached and attached to the screen to be attached when using the security device.

Security devices include anti-reflection coatings, anti-static coatings, anti-static coatings, anti-radiation coatings, line polarizer coatings, anti-scratch coatings, neutralization filters It may further comprise one or more layers selected from the group consisting of a coating layer (neutral density filter coating), and a linear polarizer (Line polarizer).

Anti-glare coating layer prevents glare by reducing external light or light reflected by indoor lighting. As the antistatic coating layer, any one of the first, second, third film or the polarizing film layer may be coated with a synthetic resin containing a conductive polymer and a metal component, or by depositing an antistatic thin film to prevent static electricity and cling to dust. Dust collection can be prevented.

Scratch-resistant reinforcement coating on the inner or outer side of the security device prevents scratching and damage of the security device, and can be cleaned without scratching by mop, etc., and prevents damage to the security device from external chemical damage. .

On the other hand, it is possible to complete a security device to prevent diffuse reflection caused by external light, including a low gloss coating layer by the scratch-resistant strengthening coating,

Ultraviolet ray-blocking coating blocks ultraviolet rays harmful to the human body, and the electromagnetic wave blocking coating blocks electromagnetic waves harmful to the human body, and mixes with the mixing ratio of ultrafine metal particles and fine carbon paste in a range that does not impair the optical properties of the security device. A security device that blocks harmful electromagnetic waves by uniformly coating and depositing a thin film uniformly on one surface of the first, second, and third film layers or the polarizing film by matching a solvent and a coating or deposition thickness with each material component, characteristic, and specification of the security device. Can be completed.

The neutralization filter coating layer [clarity / neutral density filter coating] to increase the sharpness, the line polarizer (Line polarizer) coating to increase the intensity of the film, can block various harmful rays emitted from the screen, by controlling the visible and infrared It can provide a clear and smooth screen.

The manufacturing process of the security device of the present invention will be described in more detail.

In producing the drawings for generating the electrochromic part, first, according to the purpose and purpose of use of the security device, by applying the present invention security pattern fine pattern design and its manufacturing technology, the size of the image electrochromic part is set to the line width (line thickness) of the electrochromic part 5. The line width (thickness) of the electrochromic part is set to 10 to 250 μm, and the line spacing (gap between the lines) of the electrochromic part is made to be in the range of 20 to 185 μm. , The standard of the line spacing is interlocked with each other to adjust the numerical value to design the pattern which is characterized by the optical characteristics of the security device, and then to produce a drawing with a spaced interval at a predetermined angle for generating the electrochromic part left and right Or it may include a plurality or a plurality of image electrochromic parts arranged in the left, right, up, down.

In outputting the original film for electrochromic plate making, the drawing content is set to 20,000 dpi or more using a high-performance printer based on the drawing, and the dot-curve is formed to be 400 lines or more to form a high density original film ( posi film) (original film for realizing the electrochromic part design drawing) can be output.

In the process of manufacturing plate making for electrochromic part printing, using the document film, the electrochromic part line width (line thickness), which is the image electrochromic part standard in the drawing, is in the range of 5 to 100 µm, and the electrochromic part line The height (thickness) ranges from 10 to 250 μm, and the electrochromic part line spacing (line to line spacing) is in the range of 20 to 185 μm. Can make a plate of security equipment. Rotary screen plate making, roll plate making, flat plate making, display roll making, fine precision printing making, UV printing making, “one-stop roll to roll” making, printing reflecting the standard pattern according to the drawing It is a process to select and manufacture one of electronic process plate making, fine precision printing process plate making, flat screen making plate, roll screen making plate, PCB screen making plate, offset plate making and gravure plate making. Plate making with can be used.

In the electrochromic part forming printing process for forming the blind layer, the micro pattern may be coated by applying a large-area fine pattern high speed coating and coating homogenization technique (printing process) of the security device of the present invention.

A plate for forming the electrochromic part in a high-precision printing machine in coating a colored ink for producing the image electrochromic part and adhesiveness on one or both surfaces of the first film layer or the first film layer and the second film layer. After installing it, and putting the colored ink, fine precision printing process, UV printing process, “one-stop roll-to-roll” printing process, printed electronics process, fine precision printing process, flat screen screen process, roll screen process, PCB screen By selecting one of a process, an offset process, a gravure process, and performing a printing process by a fine printing process, an image electrochromic part may be generated in a color suitable for use conditions of the first film layer or the second film layer.

In addition, when performing the electrochromic portion forming printing process, it is generally not necessary, but it is generally necessary to maintain the printing work environment at a normal temperature of 10 to 35 ° C. and a humidity of 15 to 65% if necessary due to the characteristics of the material used. Preferably, the relative humidity is preferably in the working environment in the range of 20 to 70 Rh%.

On the other hand, in the printing process, by coating the pigment directly on the film using a printing nozzle machine (inkjet printer), to enhance the adhesion of the pigment to the film, the pigment sprayed from the nozzle does not contact the film surface and spread It can be bonded as it is to realize the ultra-precision pattern and maximize the production cost reduction effect by simplifying the process.

In another method, the electrochromic part is printed on a fabric (for example, paper fabric) to complete the electrochromic part, and then on one or both sides of the first film layer or the first film layer and the second film layer. After interlocking the electrochromic portion generated on the paper fabric, the electrochromic portion coated on the paper fabric by applying a proper temperature and pressure using a heat transfer machine on the back surface of the paper fabric, the first film layer or the first film layer and the first After transferring to one or both sides of the two film layer, the paper fabric is removed, the electrochromic portion can be completed.

In superimposing the additional functions for improving functions such as blocking various harmful waves and enhancing the sharpness of the present invention, the additional functions are applied to the colored ink for forming the electrochromic part printed on the first film layer or the first and second film layers. Pigments and pastes, suspensions, sol types and the like can be mixed and simultaneously with the above blind layer forming printing.

In another method, the first, second, and third films may be manufactured by synthesizing the pigment and paste for the above-described additional functions in manufacturing the fabric film.

As another method, a process of superimposing and printing the pigments and pastes for the above-described additional functions in accordance with the conditions of use required on one side of the first, second and third films and the polarizing film may be performed.

As another method, a process of superimposing and depositing pigments and pastes for the above-described additional functions in accordance with the conditions of use required on one side of the first, second and third films and the polarizing film may be performed.

The process including the additional functional component is preferably printed by the same method as the printing method used when forming the blind layer, or using a chemical or thin film deposition method.

On the other hand, in the printing method, the "one-stop roll-to-roll" machine, which has been developed in a form that improves and improves the performance of a roller machine that performs a process of coating only one end surface of a conventional printing object, is used. In the "one-stop roll-to-roll" process, the "one-stop roll-to-roll" machine configuration and the in-process machine configuration are provided with the upper and lower rollers at the introduction of the "one-stop roll-to-roll" machine. A liquid storage tank is installed on the side or inside of the roller, and a plate making machine is formed on the outside of the roller to realize the required coating shape and thickness. The duct type conveyor connected to the heat drying and UV curing irradiation and the ventilator is installed. Is installed, and the drop box is installed at the bottom of the point where the conveyor ends and the flat coating is automatically loaded. At the top of the roll printing coating rewind it is equipped with a reverse roller.

The “one-stop roll-to-roll” process involves injecting one of paste, pigment, adhesive, or adhesive into a liquid storage tank on the side or inside of the upper and lower rollers, and then printing the object through the upper and lower rollers on which the plate is placed. As the printing process is carried out, the printing width and thickness may be adjusted by plate making, or by adjusting the distance between two rollers and pressure, and adjusting the distance between rollers and knife cutters installed on one side of the upper and lower rollers.

After the printing object is passed through the cone bearing with duct type thermal drying, UV irradiation, and ventilation function connected to the roller, the drying and curing process is carried out, and then the coating object falls automatically to the printing object loading box connected to the bottom of the final part of the conveyor. The printing object is recovered through a flat printing method or a roll printing method in which the printing object is automatically rewound to the printing object rewinding roller connected to the upper end of the cone bear portion.

The “one stop roll to roll” process using the “one stop roll to roll” machine is applied to the blind layer forming coating, the image layer coating, the adhesive layer coating, the adhesive layer coating, and the additional functional layer coating in the same manner to improve the production efficiency. Can be maximized.

The advantage of using the "one-stop roll-to-roll" facility with the "one-stop roll-to-roll" process is that it is a conventional one-sided coating or two-coating process in one operation than when performing each process step. Can be carried out at the same time, and various coatings such as blind layer formation, priming, adhesion, adhesion, image layer, and additional function layer formation coating are possible, coating quality improvement and uniformity can be realized, and drying and curing processes can be performed simultaneously. It can carry out the rewinding and loading work of the finished product at the same time, reduce the working time with automated equipment and process, reduce the working time to about 1/50, and the manufacturing cost is about A one-tenth reduction in production can be achieved.

In laminating the first film layer 10 and the second film layer 20 or the third film layer 30, the polarizing film 40, and the protective film, an electrochromic part (10) is formed on the first film layer 10. After forming the blind layer 15 including 60, the first film layer 10 having the blind layer 15 formed on the plate surface can be used alone (see FIG. 1), and the purpose and use of the security device. Accordingly, after the electrochromic parts 60 and 25-1 of the first and second films 10 and 20 are occluded, the first and second film layers 10 and 20 are coated using a heat compression bonding machine. It is also possible to heat press compression lamination at an appropriate temperature and pressure suitable for the component and material of the pigment (Fig. 2b). In addition, by using a heat press-bonding machine having a heating and pressing function together with the third film layer 30 or the polarizing film 40 on the other surface of the first film layer 10 for the flat plate lamination method, the roller lamination method and the small amount production It can be carried out by selecting one of a variety of methods, such as a manual pressing using a press, hot pressing bonding process.

Alternatively, the adhesive may be applied to one surface of the first film layer 10 or one surface of the second film layer 20, and then the second film layer 20 alone may be laminated with a pressure bonding machine (FIG. 2a) and, if necessary, a third film layer (FIG. 2C) or a polarizing film may be provided on the adhesive layer provided on the other surface of the first film layer 10.

That is, the second and third film layers 20 and 30 or the polarizing film 40 may be provided on both surfaces of the first film layer 10 in pairs.

On the other hand, the release member for protecting the pressure-sensitive adhesive layer coated on the first, second, third film layer or the polarizing film image incident surface with the coupling member of the security device, and the protective film for laminating the surface of the image exit surface A protective film can be provided.

The lamination process may be performed by selecting one of a variety of processes, such as a plate lamination method, a roller lamination method and a manual lamination using a press for a small amount of production using a pressure bonding machine having a pressure bonding lamination function.

In addition, if necessary, the third film layer or the polarizing film may be laminated on the adhesive layer provided on the other surface of the first film layer by hot press bonding.

On the other hand, in order to perform the hot pressing bonding process, the first, second, and third film layer and the components, such as polarizing film, adhesive, pressure-sensitive adhesive, resin, material properties and the appropriate temperature and time corresponding to the respective standard characteristics After setting, the temperature is in the range of 35 to 280 ℃, the pressure is in the range of 22 to 110MPa, while performing compression for 1 second to 5 minutes in parallel to prevent the generation of bubbles by the vacuum process, the components, material properties, specifications Artificial or natural cooling processes can be carried out.

In addition, the adhesive resin of the colored ink is partially transferred to the counterpart film during the hot pressing bonding process to serve as a bonding member, and the pigment component of the colored ink may be partially transferred to the counterpart film.

In addition, the temperature, pressure, running time and corresponding relationship between the first, second, and third film layers, the polarizing film and the pigments used, the adhesives, and the adhesives set according to the respective components, the material properties, and the respective standard properties. Due to the change in physical properties, the screen distortion phenomenon of the security device is eliminated, and a clearer screen can be provided.

In the drying and curing treatment process after electrochromic part, image layer, adhesive, adhesive coating and lamination, no special drying process is generally required, but precision drying process is required to maintain the perfect quality of the security device according to the material used. This drying process may be necessary and can be done by Digital-PID-Auto Tuning thermostating, which ensures high temperature distribution to prevent deformation and damage to the film and maintain high quality.

In the drying process, the appropriate temperature and time corresponding to the electrochromic part and the image layer forming pigment, the adhesive for lamination, the pressure-sensitive adhesive which is a means for bonding the security group, and the materials and components of the first, second and third film layers or the polarizing film, respectively In order to prevent the flow, spreading, and flying of printed pigments, UV is irradiated with a dryer having a quick drying and curing function, a duct cone bare drying method, a hot air and a hot wire drying method, a thermal drying method, etc. Various drying methods can be performed in parallel to perform curing or drying processes.

The drying step may be performed for 1 second to 5 minutes at room temperature or 35 ℃ to 300 ℃ temperature depending on the component ratio and conditions such as ambient temperature and humidity.

In addition, after dissolving and coating each raw material component and a corresponding solvent, the solvent may be evaporated to dryness in a drying process to allow the respective raw material components to settle.

On the other hand, it is also possible to use a film of a difficult material, or UV curing agent may be used to form a coating film thickness, and to stabilize the pigment and improve the optical security of the pigment.

At this time, the amount of the UV curing agent is slightly different depending on the film fabric and the required physical properties, but can be generally added in the range of 1 to 8% by weight of the pigment used.

There is no need for polishing in general security devices, but after the cooling process if necessary according to the components and materials and optical properties of the films and pigments for special purposes and purposes, the film and pigment components and materials, coating components and specifications The grinding process can be carried out to the required specifications using ultra-precision grinders or ultra-precision knives at the appropriate pressures and specifications.

After the drying and curing process, if necessary, set the appropriate temperature and time according to the materials and components of the 1st, 2nd, 3rd film layer or polarizing film and the colored ink and the conditions of the workplace (temperature, humidity, etc.). The cooling process may be performed or a cooling process may be performed by a process such as natural cooling.

In addition, by using a high-performance heating and pressing function thomson and a cutting machine applied to the appropriate temperature, pressure and time, depending on the materials and ingredients such as film, pigment, adhesive, adhesive, etc. Thomson and cutting processes can be carried out to the required shape and specification without being damaged by bending, breakage or warpage.

On the other hand, when each material and component used in the manufacture of the security device as a general material can be used to perform a thomson and cutting process using a general universal thomson machine or a cutting machine.

In the process of providing a security device for the installation of the security device, by using a pressure-sensitive adhesive applied to one surface of the security device as a coupling means for installing the security device, the security device can be conveniently attached to the installation target screen repeatedly for a long time without a separate attachment or detachment medium. I can put on and take off just by removing it.

It is possible to directly attach the security device (1) to the screen of the monitor (M) by coating and applying a pressure-sensitive adhesive on one side of the security device, in this case it may be advantageous to attach to the monitor (M), mobile phones, etc. of the notebook, notebooks and mobile phones When opening and closing the screen of the monitor (M), mobile phone, etc. for use, there is no need to repeat the act of removing the security device 1, and there is an advantage that a separate detachable medium is not required.

At this time, an oily or aqueous solvent can be employ | adopted as the solvent component of the said adhesive.

In addition, the acrylic and urethane-based adhesives are coated on the surface of the security device, followed by a drying process to evaporate the solvent in the adhesive component, followed by a cooling process, and then laminating a protective film on the adhesive coating surface to protect the adhesive material from foreign substances. Can be carried out.

Meanwhile, embossing may be performed on the first, second, and third film layers, the polarizing film surface, or the adhesive coating surface in order to facilitate detachment and attachment to the surface to which the security device is attached, and to prevent bubbles from being attached.

On the other hand, in order to maintain the adhesiveness for a long time without the adhesive material is not transferred or dropped to the adherend, it is also possible to provide a pressure-sensitive adhesive bonding means of the security group by performing a prime coating on the adhesive coating portion before the adhesive coating.

In addition, the security device 1 according to the present invention can provide the effect of Easy Clean, which can be cleaned only with water and a cloth, without the need for specialized cleaning solvents.

5 is a further embodiment of the present invention, which includes an omnidirectional blind layer 70 in which an omnidirectional security mode is provided to block an image emitted from the front side by being provided with an electrochromic portion on the whole surface. It features. The omnidirectional blind layer 70 may be located on an upper surface or a lower surface of the first film layer 10, or may be located on any one surface of the second film layer 20 or the third film layer 30 described above. In addition, the polarizer may be further included in a functional layer such as the polarizing film 40. The electrochromic part of the omnidirectional blind layer 70 uses the above-described bar and will not be described. In particular, the omnidirectional blind layer may be formed by combining a plurality of electrochromic parts to enable local driving. This local operation can block only a certain area in all directions, which is useful when security is selectively needed. For example, only a video exposure area, a specific folder exposure area, and a specific message or email exposure area may be selectively blocked.

The present invention also provides a display device having the security device. The display device is not limited, but may be a portable terminal, a monitor, a notebook computer, a DTV, or an IPTV. The security device may be located inside or outside the display device. When located outside the display device may be removable. Preferably, the security device is located inside the display device, and the on-off control of the security device is preferably performed in the display device.

Implementation of the on-off function of the power supply to apply a voltage to the electrochromic portion of the security device may vary. Preferred examples are as follows. That is, it may be implemented as an external button, a specific key or a shortcut key of the display device. Alternatively, it may be controlled by a software program or linked to be implemented when a predetermined specific task is executed. Alternatively, the security mode is automatically set when a certain time elapses or when an outsider operates, and a user may input a preset password to cancel the security mode. Alternatively, you can have security mode automatically activated when a menu is selected, a folder is opened, or a program is run. Or it can be preset automatically according to the user's choice. For example, it may be provided to be selected as a security mode or a normal mode for a specific menu including a text reception confirmation, a text transmission confirmation, a photo album, or a video album.

The on-off function of a power source applying and blocking voltage to the electrochromic part of the security device may be equally applied to the electrochromic part of the omnidirectional blind layer. Since the electrochromic part of the omnidirectional blind layer can be driven locally, it can be implemented to block an image only for a certain area requiring security.

More detailed description is as follows.

On-Off function of the power to apply and cut the voltage to the electrochromic device of the security device is preferably implemented by a button outside the display device. For example, as shown in FIG. 6, the on-off switch unit is located in the AD board inside the display device, and the on-off control may be implemented as a button outside the display device. In particular, the external button on the display device may be an OSD operation button. In this way, by providing an external button on the display device, the security mode can be easily turned on and off.

On the other hand, the on-off function of the power to apply and cut the voltage to the electrochromic device of the security device may be implemented by a software program. The control by the software program may be parallel to the control by the external button of the display device.

Meanwhile, the on-off function of a power source applying and blocking a voltage to the electrochromic device may be implemented by a specific key or a shortcut key provided on a display device such as a notebook or a portable terminal.

On the other hand, in the portable terminal, the security mode is required more. Accordingly, by setting the security mode for a specific menu in advance, it may be set to automatically change to the security mode when the menu is selected. For example, when the electrochromic device is changed to a dark color is called a security mode, and when the color is changed to a light color as a normal mode, a specific message including a confirmation message, a text transmission confirmation, a photo album, or a video album is included. The menu may be selected to be selected as the security mode or the normal mode. The normal mode may be expressed as a release of the security mode. If the security mode is set in advance, the security mode is automatically activated when a specific menu is selected.

The scope of the present invention should not be construed and used as being limited only to the matters, techniques, processes, machines, materials, etc. of the present invention, and the protection scope of the present invention, as well as the matters described in the claims, Applications, improvements and modifications from the teachings of the present invention will be apparent to those skilled in the art and will also fall within the protection scope of the present invention.

* Explanation of symbols for the main parts of the drawings
1: Security device 10: First film layer
20: second film layer 30: third film layer
40: polarizing film 50: image expression layer
15, 25: blind layer 60: electrochromic part
61: upper electrode 62: electrochromic material
63 ion conductor 64 ion storage layer
65: lower electrode 70: omnidirectional blind layer

Claims (38)

delete In the security device comprising a blind layer having a first film layer and a plurality of electrochromic parts arranged at a predetermined angle on one surface or both surfaces of the first film layer,
Security device characterized in that it further comprises an omnidirectional blind layer that is provided with a full-color electrochromic portion is implemented omnidirectional security mode that also blocks the image emitted to the front. The method of claim 2,
The entire color formed electrochromic portion security device, characterized in that local security through local drive. delete delete delete In the security device comprising a blind layer having a first film layer and a plurality of electrochromic parts arranged at a predetermined angle on one surface or both surfaces of the first film layer,
The electrochromic part includes a lower electrode, an upper electrode, and an electrochromic material and an ion conductor positioned between the lower electrode and the upper electrode. The method of claim 7, wherein
The electrochromic material is WO ₃ , NiO _x H _y , Nb ₂ O ₅ , V ₂ O ₅ , TiO ₂ , MoO ₃ and polyaniline security group, characterized in that consisting of one or more. In the security device comprising a blind layer having a first film layer and a plurality of electrochromic parts arranged at a predetermined angle on one surface or both surfaces of the first film layer,
The width of the electrochromic portion is 5-100, the height is 10-250, the interval between the electrochromic portion security device, characterized in that 20-185. delete delete In the security device comprising a blind layer having a first film layer and a plurality of electrochromic parts arranged at a predetermined angle on one surface or both surfaces of the first film layer,
And a polarizing film that is directly laminated on the image emitting surface of the security device, or is spaced apart through a coupling means. In the security device comprising a blind layer having a first film layer and a plurality of electrochromic parts arranged at a predetermined angle on one surface or both surfaces of the first film layer,
An image viewed from below a certain viewing angle of the user in at least one layer constituting the security device A blind layer having a first film layer and a plurality of electrochromic parts arranged at a predetermined angle on one or both surfaces of the first film layer, and attached to the blind layer to attach the first film layer. In the security device further comprises a reinforcing second film layer,
Some of the electrochromic parts of the blind layer are formed on the first film layer, and the remaining parts are formed on the second film layer, and then the first film layer and the second film layer are formed so that the divided electrochromic parts overlap each other. The security device characterized in that the junction. delete delete Preparing a first film layer;
Forming a part of the electrochromic part blocking the incident image according to a voltage applied (On) or off (Off) at predetermined intervals on one or both surfaces of the first film layer;
Preparing a second film layer;
Forming the remaining components of the electrochromic part at predetermined intervals on one or both surfaces of the second film layer; And
And bonding and laminating the first film layer and the second film layer so that the electrochromic parts formed on the first film layer and the second film layer respectively overlap each other. 18. The method of claim 17,
Part or all of the electrochromic portion is a security device manufacturing method characterized in that formed by printing. 19. The method of claim 18,
The printing step of the electrochromic unit,
Manufacturing an original film for plate making for printing the electrochromic part;
Manufacturing a plate for printing by applying the plate-making original film;
And printing the electrochromic part on one side or both sides of the first film layer or the second film layer by using the printing plate. 20. The method of claim 19,
The platemaking original film is a security device manufacturing method characterized in that it is produced with a resolution of 20,000 dpi or more and 400 dots or more. 20. The method of claim 19,
The printing plate making is one-stop roll-to-roll plate making, printed electronic plate making, fine printing plate making, PCB screen plate making, offset printing plate making, gravure plate making, roller plate making, UV plate making, plate making plate, rotary screen plate making, gravure plate making or display A method for manufacturing a security device, characterized in that the roll for forming. 20. The method of claim 19,
The printing step is a fine precision UV printing process, one-stop roll-to-roll printing process, printed electronic process, fine printing process, flat screen printing process, roll screen printing process, PCB screen printing process, offset printing process, gravure printing process or roller Security device manufacturing method characterized in that through a printing process. 20. The method of claim 19,
The printing step is a security device manufacturing method, characterized in that carried out at a temperature of 10 ~ 35 ℃ and 15 ~ 65% humidity. 20. The method of claim 19,
Preparing the first film layer or the second film layer,
Primary coating material consisting of 10 ~ 60wt% of urethane or silica component resin and 40 ~ 90wt% of solvent consisting of one or more components of bimethyl formamide (BMF), methylethylketone (MEK) and toluene. Aka (Ahanka) coating method for manufacturing a security device comprising the first coating step to increase the tension of the film fabric 25. The method of claim 24,
The first coating step is a method of manufacturing a security device, characterized in that through the flat silk screen coating process, one-stop roll-to-roll coating process, vaporized spray coating process, gravure coating process, UV coating process, or roller coating process. 20. The method of claim 19,
Laminating one or more layers of the third film layer, the polarizing film, and the protective film;
Drying and curing the laminated film layer;
Cooling the dried and cured film layer; And
And thomson and cutting the cooled film layer. The method of claim 26,
In the film layer lamination step, anti-reflection coating (anti-reflection coating), anti-static coating (anti-static coating), anti-radiation coating (anti-radiation coating), UV protective coating (Line Polarizer Coating), scratch A method for manufacturing a security device, characterized in that further comprising one or more layers selected from the group consisting of an anti-coat layer, a neutral density filter coating layer, and a line polarizer. Preparing an engraving film for printing an electrochromic portion blocking the incident image;
Manufacturing a plate for printing by applying the plate-making original film;
Coating a part of an electrochromic part on a fabric using the printing plate; And
Interposing a partial configuration of the electrochromic portion formed on the fabric on one or both surfaces of the first film layer, and then performing heat and pressure transfer to form a partial configuration of the electrochromic portion on one or both surfaces of the first film layer,
And repeating the above steps to form the electrochromic part. delete delete delete delete delete delete delete delete A display apparatus comprising the security device of any one of claims 2 to 3, 7 to 9, and 12 to 14,
Display device, characterized in that the omnidirectional security mode is not visible from the front of the entire screen or a certain area. 39. The method of claim 37,
And the predetermined area is an area where a corresponding job is displayed when a specific job is performed.

Images