KR101277727B1 - Deco-film for touch window and method thereof - Google Patents

Abstract

PURPOSE: A deco-film for a touch window and a method thereof are provided to transparently implement a window part by forming a UV glue layer, and to facilitate a design realization without limiting the thickness of printing by filling a printing stepped difference by forming the UV glue layer. CONSTITUTION: A deco-film for a touch window comprises a tempered glass(100), an adhesion layer(200), a UV pattern layer(300), an evaporation layer(400), a printing layer(500), and a UV glue layer(600). The pattern is formed about a whole area including a window part at the UV pattern layer. The evaporation layer is formed at a part of a lower surface of the UV pattern layer. The printing layer is formed at a lower surface of the evaporation layer. The UV glue layer is formed in order to fill up a stepped difference due to a thickness of the evaporation layer and the printing layer.

Description

DECO-FILM FOR TOUCH WINDOW AND METHOD THEREOF}

The present invention relates to a decor window for a touch window and a method for manufacturing the same, and more specifically, to realize a UV pattern without a conventional decor film can be reduced in thickness, to implement a transparent window portion through the UV glue layer The present invention relates to a decorative film for a touch window and a method of manufacturing the same.

In general, with the development of wireless communication technology, mobile phones have been miniaturized and complicated, and thus high reliability is required for not only electrical characteristics but also mechanical characteristics. In particular, mobile phone failures caused by mistakes such as dropping or stepping on during use are recognized as a measure of evaluating the performance of mobile phones.In this society's view, LCD module manufacturers used as mobile phone windows protect LCD panels. For this purpose, a method of increasing the strength of the mold frame or providing a window panel on the front of the LCD panel is being devised.

Recently, a PDA, a mobile communication terminal or a navigation for a vehicle forms a large market, and these electronic devices are mainly installed with a touch screen or a touch panel switch in an input operation unit.

The input operation part of the touch screen is usually made of a transparent conductive plastic film, for example, tempered glass for protecting the liquid crystal display module on which an image is formed, a decoration film printed with a company logo or a button, and ITO (Indium Tin Oxide) The conductive glass having a conductive layer such as the above has a structure in which the conductive glass is bonded through OCA (Optical Clear Adhesive).

1 is an exemplary view for examining a cross-sectional structure of a protective film of a conventional LCD module for a window, a screen printing layer 10, a deposition layer 20 stacked on the upper end of the screen printing layer 10, The UV pattern layer 30 formed over the entire upper end portion of the deposition layer 20, the optical base film 40 stacked on the UV pattern layer 30, and the optical earth film 40 is made of tempered glass 60 adhered to the upper end through the adhesive layer 50.

For reference, the non-tempered glass type touch pad type (not shown) may include a screen printing layer, a deposition layer laminated on an upper end of the screen printing layer, a UV pattern layer formed over the entire upper end of the lamination layer, The optical base film (PET base film) laminated on the top of the UV pattern layer, and a hard coating layer is formed on the upper end of the optical earth film.

Looking at their structure, the UV pattern layer 30 is provided with a predetermined pattern on the lower portion of the earth film 40 for the projection and diffusion and reflection of light. That is, the design was implemented through the UV pattern layer as described above, and the OCA and PET films were integrally applied, and the thickness thereof was about 0.125t.

However, there is a problem in that the process is complicated and the thickness is thick when applied through the integrated film structure as described above, and finally there is a problem in that the visibility of the pattern or the visibility of the display window display unit is compromised.

The present invention is to solve the problems described above, an object of the present invention to provide a touch window decor film and a method for manufacturing the same can be formed by forming a UV pattern layer directly on the OCA layer.

Still another object of the present invention is to provide a decor window for a touch window and a method of manufacturing the same, which can fill a printing step by forming a UV glue layer, thereby facilitating the design implementation without limiting the printing thickness.

Still another object of the present invention is to provide a decor window for a touch window and a method of manufacturing the same, which can implement a window unit by forming a UV glue layer.

According to a feature of the present invention for achieving the object as described above, the present invention is tempered glass; An adhesive layer formed on the lower surface of the tempered glass; UV pattern layer formed on the lower surface of the adhesive layer at all times; A deposition layer formed on a portion of a lower surface of the UV pattern layer; And a printing layer formed on a lower surface of the deposition layer, wherein the UV pattern layer includes a window portion and a pattern is formed for the entire area, and is formed by the thickness of the deposition layer and the printing layer. It provides a decor window for the touch window, characterized in that it further comprises a UV glue (glue) layer formed to fill the step.

Characterized in that it further comprises an ITO deposition layer formed on the bottom surface of the UV glue (glue) layer, the adhesive layer may be formed of OCA or adhesive resin.

On the other hand, the present invention (a) step of forming a tack on the lower surface of the tempered glass; Applying a UV resin to the lower surface of the adhesive layer, and curing the UV resin through a UV lamp under a condition of 10 to 40 ° C. to form a UV pattern layer; (C) forming a deposition layer on a portion of the lower surface of the UV pattern layer; (D) forming a printed layer on a lower surface of the deposition layer; And (e) forming a UV glue (glue) to fill the step due to the thickness of the deposition layer and the print layer provides a method of manufacturing a decorative film for a touch window.

(F) forming an ITO deposition layer on the bottom surface of the UV glue layer formed in step (e), wherein in step (b) the UV lamp uses metal and gallium lamps, and The temperature condition of ˜40 ° C. is maintained by using a base plate of a mold used in film production or cooling water installed in the mold.

As described above, the present invention provides a decor window for a touch window that can realize a thin thickness by forming a UV pattern layer directly on the OCA layer and a manufacturing method thereof.

Accordingly, the UV pattern layer can be formed regardless of the window portion, and the thickness can be reduced.

In addition, it is possible to fill the printing step by forming a UV glue layer, it is possible to facilitate the design implementation without limiting the printing thickness, there is an effect that can implement the window transparent.

1 is an exemplary view for examining the cross-sectional structure of a protective film of a conventional LCD module for windows
2 is a cross-sectional view showing a state in which a UV pattern layer is formed according to an embodiment of the present invention.
3 is a cross-sectional view showing a state in which a UV glue layer is formed according to an embodiment of the present invention.
4 is a cross-sectional view illustrating a state in which an ITO deposition layer is formed according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment for a decor window for a touch window and a method for manufacturing the same according to the present invention will be described in detail.

Prior to this, terms and words used in the present specification and claims should not be construed as being limited to ordinary or dictionary terms, and the inventor should appropriately define the concept of the term to describe its invention in the best way The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

2 is a cross-sectional view showing a structure of a decor film formed with a UV pattern layer according to an embodiment of the present invention, Figure 3 is a cross-sectional view showing the structure of a decor film formed with a UV glue layer as a next step. 4 is a cross-sectional view illustrating a structure of a decor film on which an ITO deposition layer according to an embodiment of the present invention is formed.

With reference to FIG. 2 thru | or FIG. 4, the structure is demonstrated below.

Deco film for a touch window according to the present invention is tempered glass (100); An adhesive layer 200 formed on a lower surface of the tempered glass 100; UV pattern layer 300 is formed on the lower surface of the adhesive layer 200 at all times; A deposition layer 400 formed on a portion of a lower surface of the UV pattern layer 300; And a print layer 500 formed on a lower surface of the deposition layer 400.

The tempered glass 100 is to protect the liquid crystal display module in the conductive plastic film of the touch screen, and heated the molded glass to 500 ~ 600 ℃ close to the softening temperature, and quenched by compressed cooling air to cool the glass surface portion It is a glass strengthened by compressive deformation after tensile deformation, and is an ordinary touch screen tempered glass having excellent characteristics in impact resistance, heat resistance, and safety. The adhesive layer 200 is laminated on the entire lower surface of the tempered glass 100.

The adhesive layer 200 may be formed using an optically clear adhesive tape (hereinafter referred to as “OCA”) or an adhesive resin. The OCA tape may be commercially available from 3M (3M), and the adhesive resin may be stably reinforced without lowering the light transmittance of the touch screen, such as an acrylate resin, a UV curable resin, a silicone resin, or a urethane resin. Any kind of glass or conductive glass can be used, and a urethane reactive acrylic resin can be preferably used.

In addition, although the adhesive layer 200 may use an OCA tape, when the adhesive resin is used, the adhesive layer 200 may be applied by a roll-to-roll method so that the operation may be performed more simply. Sophisticated work such as adhering a tape such as OCA without bubble generation can be omitted, thereby simplifying the work process and improving productivity. However, hereinafter, the present invention will be limited to forming the OCA tape using the adhesive layer 200.

Next, the UV pattern layer 300 is formed on the entire lower surface of the adhesive layer 200. The characteristic part is that the UV pattern layer 300 is formed directly on the pressure-sensitive adhesive layer 200 composed of OCA, UV pattern layer 300, the UV pattern layer 300 is a side that forms the pattern regardless of the window portion Is different from the existing film.

That is, in the existing film, after attaching a PET film, which is a decor film, to the lower surface of the adhesive layer, the UV pattern was molded, but in the present invention, the UV pattern layer 300 is directly attached to the OCA layer which is the adhesive layer 200 without the decor film. Can be molded. In addition, in the conventional part corresponding to the window portion, the UV pattern layer was formed to be transparent, but in the present invention, the UV pattern layer 300 may be formed on the whole irrespective of the window portion. There is a big effect that the thickness is not thin because the decor film is not used.

The UV pattern layer 300 may be designed in an arbitrary pattern, and the incident light passes through the UV pattern layer 300, causing diffuse reflection to allow light having an arbitrary frequency to enter the user's eyes. You can have color. Accordingly, it is possible to give a metallic feeling to the button part of the mobile phone as well as a simple change in color.

It is not possible to form the UV pattern layer 300 directly on the adhesive layer 200 under general working conditions. In particular, since the OCA forming the adhesive layer 200 is sensitive to temperature, the viscosity of the OCA is increased when the temperature rises. And it is difficult to maintain the adhesive force, the problem occurs in deformation to overcome the problem in the present invention by applying a lamp and a mold using a cooling device to form a UV pattern layer (300).

Hereinafter, the working conditions required for forming the UV pattern layer 300 will be described.

First of all, the temperature is preferably maintained at 10 to 40 ° C., and preferably, management is required so that work can proceed at 40 ° C. or lower. Such management may be performed by separately installing an ultraviolet lamp cooling apparatus, or cooling water may be used in the base plate or the roll mold for fixing the mold. In addition, it is preferable to use metal and gallium ram as the lamp used at the time of UV curing, and it is preferable to use gallium lamp especially when instant molding is needed. In addition, the mold structure and the UV resin (resin) may be the same as the conventional one, and in particular, the UV resin does not cause a problem in the viscosity and adhesion of the OCA constituting the adhesive layer to use the urethane and acrylic series desirable. Such UV curing conditions are preferably managed in the 400 ~ 600 mj / ㎠ range.

The patterned light-transmitting tool is used to shape the UV pattern layer using the resin, followed by irradiating the lamp (L) and curing. The pattern T1 of the light-transmitting tool T may be a pattern that can be distinguished by human touch, but may also be a micro pattern such as a hologram visually distinguishable for a more beautiful design. The micro pattern can be produced using a conventional publicly known method (such as electric pole production method).

The deposition layer 400 is formed on the partial surface of the lower surface of the UV pattern layer 300 formed as described above except for the window portion. That is, the deposition layer 400 is formed to maintain the pattern formed on the UV pattern layer 300, and the print layer 500 is formed on the lower surface of the deposition layer 400.

The print layer 500 is a portion of the company logo or product model name or the overall shape of the film and the button or pattern to be displayed on the touch screen is printed, the beautiful appearance of the touch screen electronic device, as well as to enhance the convenience It serves, and can be formed by a conventional printing method for printing a predetermined shape of the plastic film.

In this case, the print layer 500 may be formed of a single decoration film through a process such as cutting after a plurality of print layers having the same shape are formed on one base film and all processes described later are completed. . In addition, the printing step (A) generated due to the printed layer may be filled by the UV glue layer 600 to be described later, the printed layer 500 can be implemented without limitation in thickness to be.

The decor window for the touch window according to the present invention further includes a UV glue layer 600 formed to fill the step A due to the thickness of the deposition layer 400 and the print layer 500.

As shown in FIG. 3, a step A occurs between the UV pattern layer 300, the print layer 500, and the deposition layer 400, and the UV glue layer 600 may be formed to overcome this. That is, in the past, an OCA layer was formed below the printed layer, and then an ITO deposition layer was used. In this case, the printing thickness and the stepped portion of the window should be minimized so that there is no problem when laminating with the ITO deposition layer. There was a limit in forming the thickness.

Thus, the present invention solves this problem by forming the UV glue layer 600 as shown in FIG. 3 without using the OCA layer used when the ITO deposition layer and the print layer are combined.

In addition, by forming the UV glue layer 600, the UV pattern layer 300 can overcome the disadvantage that the window portion is not transparent due to the diffuse reflection generated in the irregular curved surface is not constant, transparent The window unit can be implemented. That is, since the UV glue layer 600 has no air layer between the window and the liquid crystal panel, the image quality of the liquid crystal panel may be clearly transmitted to the user as it is.

The UV glue layer 600 is naturally formed by discharging the UV glue solution 600 by discharging the UV glue solution 600 due to the stepped portion A of the UV pattern layer 300 and the print layer 500. Can be. In other words, the amount of the glue solution may be adjusted to fill the step A portion and then form a UV glue layer to the lower surface of the printing layer. Thereafter, the UV glue layer 600 is formed by curing the glue layer through ultraviolet irradiation.

Meanwhile, as shown in FIG. 4, the ITO deposition layer 700 may be additionally formed on the bottom surface of the UV glue layer 600 formed as described above.

The ITO deposition layer 700 has a transparent property while conducting electricity, and an indium tin oxide (ITO) glass or a film that is commonly used in a touch screen may be used.

As described above, it can be utilized in the "GFF" or "G1F" type touch panel of a laptop or tablet PC which is used a lot through the decorating film for touch windows described in the present invention. It can also be used for the ON CELL & IN CELL method.

On the other hand, the method of manufacturing a decor window for a touch window according to the present invention comprises the steps of (a) forming a stickiness (200) on the lower surface of the tempered glass (100); (B) forming a UV pattern layer 300 by applying UV resin to the lower surface of the adhesive layer 200 and curing the UV resin through a UV lamp under a condition of 10 to 40 ° C .; (C) forming a deposition layer 400 on a portion of the lower surface of the UV pattern layer 300; (D) forming a printed layer 500 on a lower surface of the deposition layer 400; And (e) forming the UV glue layer 600 to fill the step due to the thickness of the deposition layer and the print layer 400, 500.

In particular, further comprising the step (f) of forming an ITO deposition layer 700 on the bottom surface of the UV glue layer 600 formed in step (e), in the step (b), temperature conditions of 10 ~ 40 ℃ The silver film can be maintained using a base plate of a mold used in the production of a film or cooling water provided inside the mold, but the method is not particularly limited. In addition, the UV lamp is preferably a metal and gallium lamp, it is preferable to use a gallium lamp when the instantaneous molding is required.

The mold structure used in manufacturing the decor film according to the present invention may be used a mold structure generally used, it is preferable to use a mold structure equipped with a cooling device to maintain the temperature conditions as described above , UV resin bonded to the OCA is the adhesive layer is preferably used a resin having no problem in viscosity and adhesion.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

The present invention is applied to the field of electronic devices, such as a notebook or tablet PC having a touch window.

100: tempered glass 200: adhesive layer
300: UV pattern layer 400: deposition layer
500: printed layer 600: UV glue layer
700: ITO deposition layer

Claims (5)

Tempered glass 100; An adhesive layer 200 formed on a lower surface of the tempered glass 100; UV pattern layer 300 is formed on the lower surface of the adhesive layer 200 at all times; A deposition layer 400 formed on a portion of a lower surface of the UV pattern layer 300; And a print layer 500 formed on the lower surface of the deposition layer 400,
The UV pattern layer 300 includes a window portion, and a pattern is formed for the entire area, and a UV glue layer is formed to fill the step due to the thickness of the deposition layer 400 and the printing layer 500 ( Deco film for a touch window, characterized in that it further comprises 600).
The method of claim 1,
Deco film for the touch window, characterized in that it further comprises an ITO deposition layer 700 formed on the bottom surface of the UV glue (600).
The method of claim 1,
The adhesive layer 200 is a decor window for a touch window, characterized in that formed of OCA or adhesive resin.
(A) forming a stickiness 200 on a lower surface of the tempered glass 100;
(B) forming a UV pattern layer 300 by applying UV resin to the lower surface of the adhesive layer 200 and curing the UV resin through a UV lamp under a condition of 10 to 40 ° C .;
(C) forming a deposition layer 400 on a portion of a lower surface of the UV pattern layer 300;
(D) forming a printed layer 500 on a lower surface of the deposition layer 400; And
Method of manufacturing a decor film for a touch window comprising the step (e) of forming a UV glue layer (600) to fill the step due to the thickness of the deposition layer (400) and the print layer (500).
The method of claim 4, wherein
(F) forming an ITO deposition layer 700 on the bottom surface of the UV glue layer 600 formed in step (e), wherein the UV lamp in step (b) is metal and gallium Using a lamp, the temperature of 10 ~ 40 ℃ temperature method of manufacturing a decor window for a touch window, characterized in that it is maintained using the base plate of the mold used in the film production or the cooling water installed in the mold.

Images