WO2015072802A1

WO2015072802A1 - Panel protecting window, portable terminal comprising same, and method for manufacturing same

Info

Publication number: WO2015072802A1
Application number: PCT/KR2014/011037
Authority: WO
Inventors: 강용호
Original assignee: 주식회사 비엠솔루션
Priority date: 2013-11-18
Filing date: 2014-11-17
Publication date: 2015-05-21
Also published as: KR101461611B1

Abstract

The present invention relates to a panel protecting window and a portable terminal comprising the same. Furthermore, the present invention relates to a method for manufacturing a panel protecting window. According to an embodiment of the present invention, a method for manufacturing a panel protecting window may be provided, the method comprising: an application step for applying UV coating liquid which directly adheres to a window substrate; a UV pattern layer formation step for forming, using a mould having a pattern, a UV coating layer having the pattern in a first region of the window substrate, and for placing a UV blocking film in a second region of the window substrate which is distinguished from the first region; a curing step for curing the UV pattern layer in the first region by UV irradiation so that the UV pattern layer directly adheres to the window substrate; a separation step for separating the UV pattern layer adhered to the window substrate from the mould and the UV blocking film; and a cleaning step for cleaning the remaining UV coating liquid from the second region.

Description

Panel protection window, portable terminal including the same and manufacturing method thereof

The present invention relates to a panel protection window and a portable terminal including the same. In addition, the present invention relates to a method for manufacturing a window for panel protection.

Due to the development of wireless communication technology, various types of portable terminals have been provided. Recently, the display of the portable terminal tends to be larger, and on the contrary, the thickness of the portable terminal tends to be thinner. As a result, very high reliability is required not only for electrical characteristics but also for mechanical characteristics.

There are many examples in which the display of the portable terminal substantially forms the appearance of the portable terminal. Therefore, it is necessary to prevent breakage of the display due to dropping during use or impact with the outside.

Recently, displays have been applied to home appliances such as refrigerators as well as displays of PDAs, mobile communication terminals, navigation and cameras, and for the convenience of use, the use of displays with touch screens or touch panel switches rather than simple displays is gradually increasing. Doing.

A window can be used to protect this display. That is, a window may be used to protect the LCD or LED display panel. Of course, various types of windows may be used to protect the touch screen and the like provided on the LCD or LED display panel.

A panel protection window W of the related art will be described in detail with reference to FIG. 1.

First, the screen printing layer 1 may be formed, and the deposition layer 2 may be formed on the screen printing layer 1. In addition, a UV coating layer 3 may be formed on the deposition layer 2, and an optical base film 4 may be provided on the UV coating layer 3.

An adhesive layer 5 is provided on the optical earth film 4, and the optical earth film 4 is adhered to the tempered glass 6 through the adhesive layer 5.

Therefore, the window W for protecting the panel is sequentially formed of a window substrate 6 (for example, tempered glass), an adhesive layer 5, an optical earth film 4, a UV coating layer 3, a deposition layer 2 and a screen. It can be said that the printing layer 1 is laminated | stacked and formed. That is, the panel protection window W has at least six layers.

Since the panel protection window W has many layers, there is a problem that the manufacturing process is very complicated and not easy to manufacture. In addition, there is a limit in reducing the thickness of the overall display or the thickness of the portable terminal to which such a window is applied due to the problem of increasing the thickness of the window.

On the other hand, the UV coating layer 3 may be provided for the design of the window. A pattern may be formed on the UV coating 3 layer, and the UV coating layer on which the pattern is formed may be referred to as a UV pattern layer. Therefore, a beautiful display can be designed through various patterns. For example, it is possible to form a metallic blue color and to implement a UV pattern layer having a hairline-like design. Thus, a variety of colors and designs are possible, deviating from the front color and design of typical displays such as black or white in general.

In addition, characters, figures, and the like may be expressed through the screen printed layer 1. For example, it is possible to implement a company logo and button symbols through the screen printing layer (1).

However, as described above, various layers are provided between the UV coating layer 3 and the tempered glass 6. In addition, various layers are also provided between the screen printing layer 1 and the tempered glass 6. That is, a gap of considerable distance may be formed between the UV coating layer 3 or the screen printing layer 1 and the tempered glass 6.

Therefore, it may be difficult to recognize the UV coating layer 3, specifically, the UV pattern layer and the screen printing layer 1 from the outside. In some cases, the gap can be visually recognized from the outside, thereby degrading product reliability.

In addition, a problem may occur that the impact resistance is lowered due to the optical earth film (4). That is, the external force applied to the tempered glass 6 may not be absorbed through the optical earth film 4. This can be said that most of the external force is absorbed by the tempered glass 6 causes a decrease in impact resistance.

On the other hand, the UV coating layer 3 is generally formed on one surface of the tempered glass (6). In other words, it is common that the UV coating layer 3 is formed on both the edge portion of the tempered glass 6 and the inner portion of the edge.

The edge portion may be referred to as a bezel region, and the inner portion of the edge portion may be referred to as a display region. Thus, the UV coating layer 3 is generally formed in both the bezel area and the display area. In addition, the UV pattern layer is generally formed only in the bezel region. This is because, when the UV pattern layer is formed in the display area, the image quality may be degraded due to the pattern.

However, there is a problem in that the UV coating layer 3 itself provided in the display area deteriorates the image sharpness of the display. This is because the refraction or distortion of visible light may occur in such a coating layer.

The window W may be manufactured through the following process.

First, a very thin hard coating layer may be formed on the optical earth film 4 for preventing scattering. Then, the UV coating layer 3 having a pattern formed on the lower portion of the optical earth film 4 is adhered. In addition, a deposition layer 2 corresponding to an edge portion (bezel area) of the display is formed below the UV coating layer 3, and then a printing layer 1 is formed.

Such, the optical earth film 4, the UV coating layer (3), the deposition layer (2) and the printing layer (1) can be produced in one sheet form. After the adhesive such as OCA or PSA is adhered on the sheet, the sheet is adhered to the tempered glass 6. That is, through the lamination process, the sheet may be laminated with the tempered glass 6.

Therefore, it is not easy to manufacture a sheet which is very complicated in process and can be applied to various types of tempered glass. For example, since various types of through areas may be formed in the tempered glass, a problem may occur in that the part corresponding to the through areas in the sheet needs to be cut out again.

In addition, there is a problem that the defective rate is increased through the lamination process. This is because the through area requires a very precise lamination process.

In addition, since the UV coating layer 3 is inevitably formed in the display area, a problem of deterioration in image quality clarity of the display is inevitably generated.

It is no exaggeration to say that recent trends in portable terminals and the like are in thin thickness and clear image quality. Therefore, the need to solve the problem with the aforementioned conventional window and its manufacturing method will not be overemphasized.

The present invention basically aims to solve the aforementioned problem of the conventional panel protection window.

Through the embodiment of the present invention, the UV coating layer 30 or the screen printing layer 10 can be as close to the window substrate as possible to reduce the thickness, and thus a panel protection window that can effectively prevent the projection, diffusion and reflection of light To provide.

Through the embodiment of the present invention, to exclude the UV coating layer is formed in the display area, to provide a window for protecting the panel does not inhibit the vivid image quality of the display.

Through an embodiment of the present invention, to provide a panel for protecting the window easily improves the visibility of the UV pattern and print content, a portable terminal including the same and a method of manufacturing the window.

Through the embodiment of the present invention, to form a UV pattern layer in the bezel area and to exclude the formation of the UV coating layer in the display area, at the same time, to provide a panel protection window and a method of manufacturing the precisely divided both areas.

Through an embodiment of the present invention, to provide a panel protection window, a portable terminal including the same and a method for manufacturing the window can significantly reduce the manufacturing failure rate, and improve the reliability.

Through the embodiments of the present invention, to provide a panel protection window, a portable terminal including the same, and a method of manufacturing the window, which has improved impact resistance and improved reliability.

Through the embodiment of the present invention, it is possible to omit the optical earth film and to omit the lamination process to provide a panel protection window that can significantly reduce the manufacturing cost, a portable terminal including the same and a method of manufacturing the window do.

In order to achieve the above object, according to an embodiment of the present invention, the coating step of applying a UV coating liquid directly adhered to the window substrate; Forming a UV coating layer in which the pattern is formed in a first region of the window substrate through a mold having a pattern formed thereon, and forming a UV pattern layer in a second region of the window substrate separated from the first region; ; Curing the UV pattern layer of the first region through UV irradiation, so that the UV pattern layer is directly adhered to the window substrate; A separation step of separating the window substrate and the adhered UV pattern layer from the mold and the UV blocking film; And it may be provided a method for manufacturing a panel protection window comprising a washing step of washing the UV coating liquid remaining in the second region.

The first area may include a bezel area, and the second area may include a display area.

The UV coating solution may be a mixture of a UV curable resin and a thermosetting resin.

The pattern layer forming step may include a first pressing step of pressing the window substrate to which the UV resin is applied and the mold; And a second pressing step of pressing the mask film on which the UV blocking film is formed on the mold.

The UV blocking film is preferably formed on the surface of the mask film is pressed with the mold. That is, when the mold and the mask film are provided separately and pressed together, the UV blocking film is preferably positioned to be in direct contact with the mold.

In the forming of the pattern layer, the window substrate coated with the UV coating solution and the mold having the pattern and the blocking film may be compressed. That is, when the mold and the UV blocking film are integrally formed, it is possible to form the UV pattern layer and position the UV blocking film in place through single pressing. In this case, the mold is preferably a mold film in which the pattern and the barrier film are integrated.

According to an embodiment of the present invention, a display panel, a touch screen pad provided on the panel, and a method of manufacturing a window provided on the pad to protect the panel and the pad. An application step of applying a UV coating liquid directly adhered to the window substrate; Forming a UV coating layer in which the pattern is formed in a first region of the window substrate through a mold having a pattern formed thereon, and forming a UV pattern layer in a second region of the window substrate separated from the first region; ; A curing step of curing the UV pattern layer of the first region through UV irradiation so that the UV pattern layer is directly adhered to the window substrate; A separation step of separating the window substrate and the adhered UV pattern layer from the mold and the UV blocking film; And by washing the UV coating liquid remaining in the second region, there can be provided a method for manufacturing a panel protection window comprising a washing step to exclude the formation of the UV coating layer in the second region.

In order to implement the above object, according to an embodiment of the present invention, it is possible to provide a panel for protecting the window manufactured through the above-described manufacturing method and a portable terminal including the same.

In order to achieve the above object, according to an embodiment of the present invention, a window substrate having a display area and a bezel area on one surface; UV coating layer applied to the bezel region of the UV coating liquid directly applied to the one surface is cured, the UV coating layer is directly adhered to the bezel region and the pattern is formed; The UV coating solution applied to the display area may be removed before curing, thereby providing a panel protection window including a UV coating exclusion layer formed on the display area corresponding to the thickness of the UV coating layer.

The panel protection window may include a deposition layer formed on the UV coating layer and a printing layer formed on the deposition layer.

Through the embodiment of the present invention, the UV coating layer 30 or the screen printing layer 10 can be as close to the window substrate as possible to reduce the thickness, and thus a panel protection window that can effectively prevent the projection, diffusion and reflection of light Can be provided.

Through the embodiment of the present invention, it is possible to exclude the formation of the UV coating layer in the display area, to provide a window for protecting the panel does not inhibit the vivid image quality of the display.

Through an embodiment of the present invention, it is possible to provide a panel protection window, a portable terminal including the same, and a manufacturing method of the window, which are easily manufactured to enhance visibility of UV patterns and print contents.

Through the embodiment of the present invention, it is possible to provide a panel protection window and a method of manufacturing the same, forming a UV pattern layer in the bezel area and eliminating the formation of a UV coating layer in the display area, and precisely distinguishing both areas.

Through the embodiment of the present invention, it is possible to significantly reduce the defective rate during manufacturing, to provide a panel protection window, a portable terminal including the same and a method of manufacturing the window to improve the reliability.

Through the embodiments of the present invention, it is possible to provide a panel protection window, a portable terminal including the same, and a method of manufacturing the window, which have improved impact resistance and improved reliability.

Through the embodiments of the present invention, it is possible to omit the optical earth film and to omit the lamination process, thereby providing a panel protection window, a portable terminal including the same, and a method of manufacturing the window, which can significantly reduce manufacturing costs. Can be.

1 is a cross-sectional view of a conventional panel protection window;

2 is a sectional view of a window for panel protection according to an embodiment of the present invention;

3 is a cross-sectional view showing a state before adhesion of a window substrate, a mold, and a mask film;

4 is a cross-sectional view showing a state after close contact in the state shown in FIG.

5 is a cross-sectional view showing a state before adhesion of a window substrate to a mold;

6 is a cross-sectional view showing a state after close contact in the state shown in FIG.

7 is a flowchart of a method for manufacturing a panel protection window according to an embodiment of the present invention; And

8 is a table showing the weight percentage of the components of the UV resin according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail preferred embodiments of the present invention.

First, a panel protection window according to an embodiment of the present invention will be described in detail with reference to FIG. 2.

The panel protection window 100 may include a window substrate 60. The window substrate 60 may include glass or PET film. In particular, the glass may include tempered glass having impact resistance or heat resistance per se. The glass may substantially form the outer surface of the display. In many cases, the display may form part of the outer surface of the mobile terminal or other devices. Therefore, since the panel protection window 100 forms the outer surface of the devices, it is necessary to provide a foolish design.

To this end, it is preferable that the UV coating layer 30 is directly formed on the window substrate 60. Specifically, it is preferable that the patterned UV coating layer, that is, the UV pattern layer is formed directly on the window substrate 60. In other words, it is preferable that the UV pattern layer is directly formed on the window substrate 60 through the self-curing of the UV coating solution, excluding the adhesive such as PSA or OCA.

The UV coating layer 30 or the UV pattern layer is formed on one surface of the window substrate 60. That is, the UV coating layer 30 is formed on the surface facing the panel. 2 illustrates an example in which the one surface is a lower surface of the window substrate 60.

In addition, the deposition layer 20 and the print layer 10 may be formed under the UV coating layer 30.

The UV coating layer 30 may be formed by curing the UV coating liquid directly applied to the lower surface of the window substrate 60 to be directly adhered to the lower surface of the window substrate 60. However, as will be described later, it is preferable that the UV coating layer 30 is excluded in a portion of the window substrate 60.

Meanwhile, the UV coating solution may be directly applied to the mold having the pattern other than the window substrate 60. Specifically, the UV coating layer 30 may be directly adhered to one surface of the window substrate 60 after the one surface of the window substrate is in direct contact with the surface of the applied UV coating liquid is cured. . That is, the UV coating liquid may be applied directly to the window substrate 60 or to another object. In any case, however, the UV coating layer 30 is formed by directly adhering to one surface of the window substrate 60.

Here, a mold may be required to form the UV coating layer 30, specifically, a patterned UV coating layer (hereinafter referred to as “UV pattern layer” for convenience of description). That is, a predetermined pattern is formed on the mold, and the pattern may be transferred to the UV coating layer 30 to form a UV pattern layer.

As shown in FIG. 2, the window substrate 60 may include a first region 61 and a second region 62. The first region 61 and the second region 62 may be clearly distinguished through a UV coating layer and a UV coating exclusion layer formed on the window substrate 60 as described below.

As shown, the UV coating layer 30 is formed in the first region 61. More specifically, it is preferable that the UV pattern layer is formed in the first region 61. In addition, it is preferable that the UV coating layer 30 is excluded in the second region 62. That is, it is preferable that the UV coating exclusion layer 31 corresponding to the thickness of the UV coating layer 30 is formed. In other words, it is preferable that no UV coating layer is formed on the UV coating excluding layer 31. Therefore, the UV coating exclusion layer 31 may be an air gap in which an empty space is formed. The thickness of the UV coating exclusion layer 31 or the thickness of the air gap may be the same as the UV pattern layer.

In detail, the first region 61 may include a bezel region as an edge portion of the window substrate 60. The second area 62 may be a display area as a radially inner portion of the bezel area. That is, it may be a display area where a user can directly view an image or the like.

Therefore, as shown, it is desirable to form a UV pattern layer in the bezel area to implement a beautiful design of the window, and at the same time to exclude the formation of a UV coating layer in the display area. Through this, it is possible to implement a clearer picture quality outside the window. This is because refraction or distortion of visible light due to the UV coating layer can be prevented.

Hereinafter, an embodiment of the manufacturing process of the window protection panel described above with reference to FIGS. 3 and 4 will be described in detail.

3 shows the window substrate 60, the mold 200, and the mask film 300 before being in close contact with each other, and FIG. 4 shows the window substrate 6, the mold 200, and the mask film 300. It shows a close look. In the present embodiment, the mold 200 and the mask film 300 may be separately provided.

As shown in FIG. 4, the window substrate 60 may be in close contact with the mold 200. That is, the coated UV coating solution 33 may be interposed between the window substrate 60 and the mold 200. This UV coating solution is then cured to form a UV pattern layer. Therefore, as the window substrate 60 is in close contact with the mold 200, one surface of the UV coating liquid 33 is in close contact with the window substrate 60 and the other surface is in close contact with the mold 200.

The pattern 210 is engraved on one surface of the mold 200. Therefore, as the UV coating solution 33 before curing is brought into close contact with the pattern 210 of the mold 200, the pattern may be projected onto the UV coating solution as it is.

Here, the pattern 210 is preferably formed only on a portion of the mold 200. That is, it is preferable to be formed so as to correspond only to a region where the UV pattern layer is formed among the regions of the window substrate 60. This region may be a bezel region as described above. Therefore, as shown in FIG. 3, the pattern 210 may be formed only at an edge portion of the mold 200, that is, a portion corresponding to the bezel area of the window.

After the window substrate 60 is in close contact with the mold 200, the mask film 300 may be in close contact with each other. That is, as shown in FIG. 4, the window substrate 60, the mold 200, and the mask film 300 may be sequentially positioned to closely contact each other. Such close contact may be performed through rolling through the roller 400. That is, compression may be performed through rolling.

The pressing may be performed after the window substrate 60 is in close contact with the mold 200, and may be performed again after the mask film 300 is in close contact with the mold. Of course, the window substrate, the mold 200 and the mask film 300 may be performed after being in close contact with each other.

The mold 200 may be positioned to correspond to the window substrate 60 through a transfer means (not shown) such as a picker. Of course, the window substrate 60 may be positioned to correspond to the mold 200 through the transfer means. Similarly, the mask film 300 may be positioned to correspond to the mold 200 through the transfer means.

Therefore, as shown in FIG. 4, the window substrate 60, the mold 200, and the mask film 300 may be pressed through the rolling means and then rolled.

Here, the mask film 300 preferably includes a substrate 310 and a UV coating blocking film 320. The substrate 310 may be a PET film, and the UV coating barrier layer 320 may be formed in a portion of the substrate 310.

Specifically, the UV coating blocking film 320 may be referred to as a film to block the transmission of UV. Therefore, the UV coating barrier layer 320 is preferably formed at a position corresponding to the above-described UV coating exclusion layer 31.

As shown in FIG. 3, the UV coating liquid 33 may be applied to the entire area of one surface of the window substrate 60. That is, the UV coating liquid 33 may be applied to both the bezel area and the display area. Thereafter, when the above-described mold 200 and the mask film 300 are in close contact with each other as shown in FIG. 4, the bezel area and the display area may be projected to be distinguished from each other in the vertical direction. In other words, an area in which the UV coating barrier layer 320 is projected in the vertical direction and an area in which the pattern 210 is projected may be clearly distinguished from each other.

As shown in FIG. 4, UV may be irradiated from the upper portion of the mask film 300. The UV may be irradiated in the vertical direction. UV may transmit the pattern 210 in the vertical direction. However, UV transmission of the UV coating barrier 320 is blocked. In other words, through the UV coating barrier layer 320, a portion of the UV coating liquid 33 is irradiated with UV and a portion of the UV coating is blocked.

The UV coating solution 33 may include a UV resin having UV curing properties. Therefore, it has a property of curing when UV is irradiated. Thus, the area irradiated with UV is cured and the area not otherwise cured. That is, the UV coating liquid 33 is cured in the bezel area of the window substrate 60 to form a UV coating layer, specifically, a UV pattern layer. However, liquid UV coating liquid still remains in the display area.

When the curing through UV irradiation in the state shown in Figure 4 is completed, the mask film 300 and the mold 200 is separated. Of course, even after separation, the liquid UV coating liquid still remains in the display area.

Since the UV coating liquid is before curing, it can be easily removed from the window substrate 60. For example, the UV coating solution can be removed by washing. That is, the UV coating solution may be washed and removed from the window substrate 60 through the cleaning solution. Of course, the UV pattern layer is not removed at this time. Therefore, the UV coating layer may be excluded from the window substrate 60 except for the region where the UV pattern layer is formed.

Specifically, it may be excluded that the UV coating layer is formed in the display area. This may be referred to as a UV coating exclusion layer, the thickness of the UV coating exclusion layer 31 will be formed corresponding to the thickness of the UV pattern layer.

As described above, the portion where the UV coating solution is cured and the portion that does not cure through the UV blocking layer 320 are separated. That is, the hardened portion and the uncured portion may be partitioned. The uncured portion is removed by washing as described above.

Here, it is preferable that the hardened portion and the uncured portion are precisely partitioned. It is desirable that the interface of both be formed precisely.

To this end, the UV blocking film is preferably formed on the surface of the mask film 300 is pressed with the mold 200. As shown in FIGS. 3 and 4, the UV blocking layer may be formed on the bottom surface of the mask film 300. Thus, despite the thickness of the mask film 300 or the thickness of the substrate 310, the UV blocking film can be as close to the UV coating solution 33 as possible. In addition, it is preferable to reduce the thickness of the mold 200 together with the position of the UV blocking film. This is because, as the vertical distance between the UV blocking film and the UV coating solution increases, the interface between the hardened portion and the uncured portion may not be precise due to UV refraction. Therefore, by forming the UV blocking film on the surface pressed on the mold, the interface between the hardened portion and the uncured portion can be formed very precisely.

Meanwhile, the window 100 may be used for a portable terminal. The mobile terminal may include a display panel and a touch screen panel or pad provided on the panel. In addition, the window 100 may be provided on the touch screen panel or the pad to protect the display panel or the touch screen panel. Thus, the window 100 substantially forms the outer surface of the portable terminal.

A portable terminal such as a smart phone may be formed with the entire window 100. Therefore, the probability that an external shock is transmitted to the window 100 is very high. However, as described above, since the UV pattern layer 30 is formed by directly adhering to the window substrate 60, the impact resistance is very excellent.

In addition, it is possible to secure thermal stability, acid resistance, solvent resistance and hot water resistance through the omission of adhesion means such as PSA or OCA, omission of PET film, and the like. That is, the UV pattern layer 30 may be firmly adhered to the glass 60 even in a harsh use environment.

The UV pattern layer may be formed by directly adhering to one surface of the window substrate 60. Therefore, the improvement of adhesive force becomes very important.

As mentioned above, UV coating liquids generally contain only UV curable resins having UV curable properties. Of course, an initiator may be further included. This is because it is possible to form a UV coating layer by simply curing the UV coating liquid only through UV irradiation. On the other hand, it is also because the UV coating liquid adheres to a plastic material which is highly likely to be deformed or damaged by heat. As an example, it may be considered to form a UV pattern layer directly on an adhesive film such as an optical mount film or OCA. In this case, an optical mount film, an OCA film, or the like is very vulnerable to heat. For this reason, it is conceivable that UV resins use only UV curable resins having UV curing properties.

However, as described above, in the embodiments of the present invention, it is preferable to adhere to the surface of the window substrate 60 as the UV coating liquid in the molten state is cured. That is, it can be said that the UV resin is cured to form the UV pattern layer 30 and adheres to the surface of the window substrate 60. For this reason, the UV coating liquid that can be used in the present embodiments is preferably formed to adhere to the surface of the window substrate 60 more reliably.

First, the UV coating liquid according to the present embodiment is preferably a resin having UV curing properties. That is, the resin is preferably cured through UV irradiation. For example, a urethane and acrylic UV resin may be used. The UV coating solution may be mixed with at least two different UV curable resins. For example, the urethane acrylate oligomer and the acrylate monomer may be included. Therefore, the resin of different tissues can be cured with a slight difference by UV irradiation. That is, by mixing different materials with each other it is possible to further enhance the adhesive force through the curing. Of course, the UV coating liquid may include an initiator for initiating the polymerization reaction of the UV curable resin.

However, in this embodiment, in order to ensure more reliable adhesive force, the UV resin is more preferably a mixture of a plurality of resins having different curing properties as well as different materials. That is, it is more preferable to mix resin of UV curing property and resin of thermosetting property. In one example, the thermosetting resin may be an epoxy resin. Therefore, it is possible to vary the curing time from each other due to the difference in curing properties.

For example, after curing the UV curable resin through UV irradiation, it is possible to cure the thermosetting resin through heating. Therefore, due to the difference in the microstructure due to the difference in the material itself, due to the difference in curing time, both of them exert a synergistic effect to increase the adhesive force to each other.

In addition, in the present embodiment, the UV pattern layer may be directly formed on the window substrate such as glass or tempered glass. Such glass and tempered glass have much higher heat resistance than general plastic materials. Thus, there is a very low risk of damage due to heating to the adhered thermosetting resin. However, on the contrary, the adhesive force due to heating can be further increased.

On the other hand, excessive increase in heating temperature and increase in heating time for thermal curing may cause problems such as increase in manufacturing cost and deformation of the window substrate. Therefore, the weight percent of the UV curable resin and the thermosetting resin needs to be properly considered. In addition, when the window substrate is a plastic material such as PET film, it will be possible to vary the ratio of the heating temperature and the thermosetting resin.

As shown in FIG. 8, the inventors have found that the weight percent of the UV curable resin in the UV coating solution is 80 or more and the weight percent of the thermosetting resin has a proper value of about 5 to 10. That is, in consideration of the deformation prevention of the window substrate, such as tempered glass, and the increase in the adhesive force, it was found that the weight% of the thermosetting resin was 10 or less. It has also been found that the UV curable resins also preferably include at least two resins.

When two UV curable resins are included, it is preferable that any one weight% is greater than the other weight%. For example, the first UV curable resin is a urethane resin and the second UV curable resin is an acrylic resin. Here, it is preferable that the weight% of urethane series resin is larger than the weight% of acrylic resin.

The present inventors obtain at least two synergistic effects of preventing deformation of the glass and increasing the adhesive force through heat curing through heating of the UV resin in the range of about 30 to about 60 minutes in addition to the components and the component ratio of the UV resin. Could figure out that it could.

Therefore, the UV pattern layer can be formed directly on the glass more effectively and stably by using a UV resin mixed with a UV curable resin and a thermal curable resin, rather than a general UV resin. In addition, through the increase in the adhesive strength through the difference in curing properties and the surface processing of the glass described above, it is possible to further increase the adhesive strength.

Hereinafter, another embodiment of the manufacturing process of the window protection panel described above with reference to FIGS. 5 and 6 will be described in detail. Basically, in this embodiment, unlike the above-described embodiment, the mold 200 and the mask film 300 may be integrally formed. Therefore, description overlapping with the above-described embodiment will be omitted and will be described mainly on the difference.

As shown in FIG. 5, the window substrate 60 may be in close contact with the mold 200. That is, the coated UV coating solution 33 may be interposed between the window substrate 60 and the mold 200. This UV coating solution is then cured to form a UV pattern layer. Therefore, as the window substrate 60 is in close contact with the mold 200, one surface of the UV coating liquid 33 is in close contact with the window substrate 60 and the other surface is in close contact with the mold 200.

Specifically, the pattern 210 is engraved on one surface of the mold 200. Therefore, as the UV coating solution 33 before curing is brought into close contact with the pattern 210 of the mold 200, the pattern may be projected onto the UV coating solution as it is.

Here, the pattern 210 is preferably formed only on a portion of the mold 200. In addition, the UV blocking film 220 may be formed in a portion where the pattern 210 is not formed. That is, the pattern 210 is formed in the region where the UV pattern layer is formed among the regions of the window substrate 60, and the UV blocking layer 220 is formed to correspond to the region where the UV pattern layer is excluded. These regions may be a bezel region and a display region as described above. Accordingly, as shown in FIG. 5, the pattern 210 is formed at an edge portion of the mold 200, that is, a portion corresponding to the bezel area of the window, and the UV blocking film 220 is formed at an inner portion of the mold 200. That is, it is preferably formed in a portion corresponding to the display area of the window.

As shown in FIG. 6, the mold 200 may be in close contact with the window substrate 60. Such close contact may be performed through rolling through the roller 400. That is, compression may be performed through rolling. The pressing is preferably performed after the window substrate 60 is in close contact with the mold 200.

Here, the mold 200 may be a mold film in which the pattern 210 and the UV blocking film 220 are integrally formed. That is, the pattern 210 and the UV blocking film 220 may be formed on one surface of the substrate 230 by partitioning each other. The substrate 230 may be a PET film.

The pattern 210 may be formed by transferring a pattern onto a mold film through an original mold (a mold used repeatedly and semi-permanently). In addition, the UV blocking film 220 may be attached to a portion other than the pattern 210 through an adhesive or the like. Therefore, it is possible to implement a mold in the form of a film. In addition, the mold barrier film may be integrally formed with the UV blocking film 220. The mold film may be for several or one use.

On the other hand, in the present embodiment, unlike the embodiment described above, it is possible to omit any one of the mold or the mask film. Therefore, the gap between the UV blocking film 220 and the UV coating solution 33 can be greatly reduced. In particular, the UV blocking film 220 can be in direct contact with the UV coating solution 33 through the present embodiment.

Thus, according to this embodiment, it becomes possible to realize a very precise interface between the hardened portion and the uncured portion.

In addition, according to the present embodiment, the adhesion between the mold and the mask film may be omitted. In other words, there is no need to align both. Thus, the work process is very simple and it is possible to minimize the defects. Of course, this means that the window manufacturing apparatus can be manufactured more easily.

Hereinafter, referring to FIG. 7, the method of manufacturing the above-described window 100 will be described in more detail.

First, the step (S1) of applying the UV coating liquid is performed. That is, the step of applying the UV coating liquid which is directly adhered to the window substrate is performed. The configuration of the UV coating liquid has been described above, and the coating is preferably performed directly on the window substrate 60.

After the coating step (S1), the UV pattern layer forming step (S2) may be performed. In the UV pattern layer forming step, it is preferable to form a UV coating layer in which the pattern is formed in the first region 61 of the window substrate 60 through a mold having a pattern formed. In addition, in the UV pattern layer forming step, it is preferable to position the UV blocking film in the second region 62 of the window substrate 60 which is separated from the first region. Therefore, the UV pattern layer forming step (S3) may be referred to as a step of forming the UV pattern layer and the UV blocking film in place.

Specifically, the pattern layer forming step (S2) may include a first pressing step of pressing the window substrate 60 and the mold to be in close contact with each other. Through this first compression step, the pattern engraved in the mold can be inscribed in the UV coating liquid.

In addition, the pattern layer forming step S2 may include a second pressing step of pressing the mold 200 and the mask film 300 to be in close contact with each other. Through the second pressing step, the UV blocking layer 320 may be in close contact with the coating solution 33 as much as possible.

Here, the first pressing step and the second pressing step may be performed in an embodiment in which the mold 200 and the mask film 300 are separated.

Meanwhile, in the pattern layer forming step (S2), the window substrate 60 coated with the UV coating solution and the mold 200 or the mold film on which the pattern 210 and the UV blocking film 220 are formed may be pressed. . That is, when using a mold in which the pattern and the blocking film are integrated, the pattern layer forming step S2 may be performed through a single pressing step.

After the pattern layer forming step (S2) it is preferable that the curing step (S3) of irradiating UV to cure the UV coating solution to adhere to the window substrate. The UV does not penetrate the UV barrier. Thus, the UV pattern layer is cured and adhered to the window substrate. In the portion corresponding to the UV blocking film, the UV coating solution is uncured to remain in the liquid phase. Therefore, the curing step (S3) may be referred to a step of curing the UV coating solution selectively for each region.

After the curing step S3, the step S4 of separating the window substrate 60 from the mold 200 may be performed. Of course, by separating the mold 200, the UV blocking film may also be separated, and the mold 200 and the UV blocking film may be separated separately.

The separated window substrate 60 may be said to have a UV coating layer in which the cured and adhered UV pattern layer and the liquid UV coating liquid remain. Therefore, the washing step (S5) of removing the liquid UV coating liquid to form a UV coating exclusion layer may be performed.

That is, the washing step may be referred to as forming a UV coating exclusion layer while removing the liquid UV coating solution.

As described above, it is preferable that the UV pattern layer according to the present embodiment is not manufactured in the form of a sheet. That is, it is preferable that the UV pattern layers are directly adhered to each of the window substrates. Therefore, even if the shape of the glass is changed, it becomes possible to easily form the UV pattern layer. In addition, it becomes possible to abbreviate | omit the process etc. which cut a sheet | seat.

After the washing step S5 is finished, a drying step S6 may be performed. The drying step may be performed to effectively remove the washing liquid used in the washing step (S5). In addition, it may be performed for thermal curing as described above. That is, when the thermosetting resin is included in the UV coating liquid, it is possible to further harden the UV pattern layer through heating in the drying step (S5).

Meanwhile, in order to further increase the adhesive force, the step S0 of processing the surface of the window substrate 60 may be performed. That is, the surface processing of the window substrate may be performed first before forming the UV pattern.

The print layer 10 and the deposition layer 20 may be formed on the window substrate 60 having the UV pattern layer formed thereon.

In the above, preferred embodiments of the present invention have been described in detail. The present invention is not limited to the described embodiments, but will include modifications to other forms in which the technical matters are the same.

Claims

An application step of applying a UV coating liquid directly adhered to the window substrate;

Forming a UV coating layer in which the pattern is formed in a first region of the window substrate through a mold having a pattern formed thereon, and forming a UV pattern layer in a second region of the window substrate separated from the first region; ;

Curing the UV pattern layer of the first region through UV irradiation, so that the UV pattern layer is directly adhered to the window substrate;

A separation step of separating the window substrate and the adhered UV pattern layer from the mold and the UV blocking film; And

A method for manufacturing a panel protection window comprising a washing step of washing the UV coating liquid remaining in the second region.
The method of claim 1,

And the first area includes a bezel area and the second area includes a display area.
The method of claim 1,

The UV coating solution is a panel protective window manufacturing method, characterized in that the UV curable resin and thermosetting resin is mixed.
The method according to any one of claims 1 to 3,

The pattern layer forming step,

A first compression step of pressing the window substrate coated with the UV resin and the mold; And

And a second pressing step of pressing the mask film on which the UV blocking film is formed on the mold.
The method of claim 4, wherein

The UV blocking film is a panel protection window manufacturing method, characterized in that the mask film is formed on the surface pressed with the mold.
The method according to any one of claims 1 to 3,

In the pattern layer forming step,

And a window substrate coated with the UV coating solution and a mold having the pattern and the barrier layer formed thereon.
The method of claim 6,

The mold is a window manufacturing method for the panel protection, characterized in that the mold film is a pattern and the barrier film is integrated.
The method according to any one of claims 1 to 3,

Panel protection window manufactured through the manufacturing method and a portable terminal comprising the same.
In the display panel, the touch screen pad provided on the panel and the method of manufacturing a window provided on the pad to protect the panel and the pad,

An application step of applying a UV coating liquid directly adhered to the window substrate;

Forming a UV coating layer in which the pattern is formed in a first region of the window substrate through a mold having a pattern formed thereon, and forming a UV pattern layer in a second region of the window substrate separated from the first region; ;

A curing step of curing the UV pattern layer of the first region through UV irradiation so that the UV pattern layer is directly adhered to the window substrate;

A separation step of separating the window substrate and the adhered UV pattern layer from the mold and the UV blocking film; And

And washing the UV coating liquid remaining in the second region to exclude the formation of the UV coating layer in the second region.
A window substrate having a display area and a bezel area on one surface thereof;

UV coating layer applied to the bezel region of the UV coating liquid directly applied to the one surface is cured, the UV coating layer is directly adhered to the bezel region and the pattern is formed;

A UV coating exclusion layer which is removed before the UV coating liquid applied to the display area is cured and formed to correspond to the thickness of the UV coating layer on the display area;

A deposition layer formed on the UV coating layer; And

A panel protection window comprising a printed layer formed on the deposition layer.