KR101536651B1 - Method of transparent window and the transparent window - Google Patents

Abstract

A method of manufacturing a transparent window disposed on top of a display, including window decorations, includes a release film, a release agent coating formed on the release film, a soft primer layer provided on the release agent coating, and window decorations provided on the primer layer Providing a laminated film to the transparent substrate via an optical adhesive layer; and removing the release film to transfer the window decoration to the transparent substrate.

Description

METHOD OF TRANSPARENT WINDOW AND THE TRANSPARENT WINDOW

The present invention relates to a method of manufacturing a transparent window and to a transparent window, and more particularly to a transparent window disposed above the display.

1 is a perspective view illustrating a conventional capacitive touch panel sensor.

1, in a conventional touch panel sensor, a lower insulating sheet 10 and an upper insulating sheet 20 are bonded at a predetermined interval. The lower ITO electrode 30 and the upper ITO electrode 40 are vertically arranged on the opposing surfaces of the lower insulating sheet 10 and the upper insulating sheet 20. Specifically, The upper ITO electrode 40 is oriented from the upper side to the lower side on the bottom surface of the upper insulating sheet 20.

In the above-described touch panel sensor, there is a predetermined capacitance, that is, a capacitance value corresponding to the area of each intersection point at each intersection of the lower ITO electrode 10 and the upper ITO electrode 20 disposed so as to cross each other. The area of the upper ITO electrode 20 disposed on the upper part is added to the area of the body part, and the capacitance value can be changed.

A connection line 48 made of a metal is connected from the end of the upper ITO electrode 40 to the upper insulating sheet 20 to electrically connect the upper ITO electrode 40 and the electrode 52 of the external circuit board 50 And the lower ITO electrode 20 is connected to the circuit board 50 by a separate connection line.

At this time, the connecting line 48, which is generally made of metal, is shiny with metallic luster and can not be seen through the transparent upper insulating sheet 20 because the light does not pass through. Conventionally, a separate non-transmissive film for the window decoration 65 is formed on the bottom surface of the reinforced substrate 60 such as a separate glass or translucent reinforced plastic so that the connecting line 48 and the circuit board 50 can not be visually recognized , And the reinforcing substrate (60) is disposed on the upper insulating sheet (20).

The present invention provides a transparent window manufacturing method and transparent window capable of directly transferring window decorations for visually intercepting opaque components onto a transparent substrate.

The present invention provides a transparent window fabrication method and transparent window that can prevent light from leaking through the side of the display.

According to an exemplary embodiment of the present invention, a method of manufacturing a transparent window disposed on top of a display including window decorations includes: a release film; a release agent coating formed on the release film; a soft primer layer provided on the release agent coating; And a window decoration provided on the primer layer, adhering the laminated film to the transparent substrate through the optical adhesive layer, and removing the release film to transfer the window decoration to the transparent substrate .

Further, the laminated film may include a margin portion extending outside the boundary of the transparent substrate. After the laminated film is brought into close contact with the transparent substrate, the margin portion may be refracted to cover the side surface of the transparent substrate. The side finishing process of the display is comparatively easy using the margin portion, and it is possible to prevent the light of the display from leaking to the side of the transparent substrate.

Window decorations in the laminated film adhered to the transparent substrate and removing the release film or release agent coating on the transparent substrate except for the primer layer can cover the side of the transparent substrate and can be window decorations and primer layers, Window decorations that block light can effectively prevent lateral glare from the display.

In some cases, the primer layer and the window decoration are formed to extend outside the boundary of the transparent substrate, but the primer layer can be formed to extend further outward than the boundary of the window decoration. Therefore, when the side of the transparent substrate is folded, a relatively soft primer layer can cover the side surface of the transparent substrate. In this case, the optical adhesive layer may be exposed to the outside of the boundary of the transparent substrate in the process of adhering the laminated film to the transparent substrate, and the range may be disposed inside the boundary of the window decoration.

The primer layer may be provided for facilitating the formation of window decorations and for facilitating the transfer of window decorations to the transparent substrate than forming the window decorations directly on the release agent coating.

The primer layer may be formed corresponding to the window decoration or may be formed corresponding to the release film. Such a primer layer can be provided by applying or printing a liquid curing agent on a release film, and then curing the liquid curing agent. It is also possible to use a film having a film thickness of 10 to 30 mu m so that a separate thermal curing treatment or ultraviolet curing treatment is not necessary. However, urethane-based synthetic resin can be used as the material thereof. If the primer layer is too hard, it may feel gritty when covering the side surface of the transparent substrate, Choose a soft material such as urethane for a smooth finish.

Further, the above-mentioned laminated film can be adhered to the transparent substrate through the optical adhesive layer, and the optical adhesive layer can use an ultraviolet curing agent or an optical adhesive film. At this time, the window decoration can be refracted to cover the optical adhesive layer and the side surface of the display, so that the light leakage can be prevented.

For reference, the above-mentioned transparent substrate can correspond to an upper glass substrate directly touching the body placed at the top of the touch panel sensor, and can detect the position of the body approaching below the upper glass substrate on which the window decoration is transferred A touch panel sensor having sheets having electrode patterns may be disposed, and in some cases, an electrode pattern for a touch panel sensor may be disposed directly on a primer layer exposed by removing the release film.

On the other hand, the sheets can be bonded to each other through a separate optical adhesive layer from the primer layer. If the window decoration is directly placed on the upper glass substrate without the primer layer, the window decoration can only form a step with the upper glass substrate surface by its thickness. In order to attenuate the step, the optical adhesive layer is provided with a considerable thickness .

However, in the present invention, since the primer layer is provided over the window decoration to provide a generally flat surface, there is less possibility of refraction of the sheet due to the step of window decoration, and the thickness of the optical adhesive layer can be made thin. This can improve the touch sensitivity by reducing the thickness of the touch panel sensor.

In addition, a multi-coating layer may be further provided on the cured layer and the cured layer covering the window decoration and the primer layer, and may be transferred to the transparent substrate together with the window decoration.

The multi-coating layer may comprise fine lines formed on the cured layer corresponding to the window decorating area. The fine lines can be formed by a mold having irregularities corresponding to the fine lines, which can be formed directly on the surface of the cured layer. The cured layer may contain an ultraviolet curing agent or a thermosetting agent. In this case, the curing agent before curing of the liquid phase may be applied and printed so as to cover the window decoration and the primer layer, and the mold may be placed on the top and cured to provide a fine line.

In addition, the multi-coating layer may be provided as a separate layer including silicon dioxide or titanium dioxide if it is a transparent material, and may be formed by appropriately mixing silicon dioxide, titanium dioxide or the like with a synthetic resin . These materials are translucent and bluish to give the touch panel sensor a more luxurious appearance.

According to another exemplary embodiment of the present invention, a transparent window disposed above the display including window decoration is interposed between a transparent substrate, a primer layer transferred onto a transparent substrate, a primer layer, and a transparent substrate, The primer layer and the window decorations may comprise a release film, a release agent coating formed on the release film, a primer layer provided on the release agent coating, and a primer layer provided on the primer layer The laminated film including the window decoration may be adhered to the transparent substrate, and the release film may be removed and transferred to the transparent substrate.

According to the transparent window manufacturing method and the transparent window of the present invention, the window decoration can be directly transferred onto the transparent substrate.

The transparent window manufacturing method and the laminated film used in the transparent window of the present invention may include a margin portion extending outside the boundary of the transparent substrate to refract the margin portion to cover the side surface of the transparent substrate. Therefore, the side finishing treatment of the display is relatively easy, and the light of the display can be prevented from leaking to the side of the transparent substrate.

Also, when using the transparent window manufacturing method of the present invention and the optical adhesive layer for bonding window decoration and transparent substrate in the transparent window, the window decoration can be refracted to cover the optical adhesive layer and the side surface of the display, .

Further, in the transparent window manufacturing method and the transparent window of the present invention, it is easy to refract using the urethane-based synthetic resin as the material of the primer layer, and the primer layer which covers the side of the transparent substrate at the outermost side does not have a gritty feeling, Processing is possible.

In addition, the transparent window fabrication method of the present invention and the window decoration of the transparent window provide a primer layer over the primer layer, the refraction of the sheets on which the electrode pattern of the touch panel sensor provided on the primer layer is formed is minimized, It is possible to reduce the thickness of the optical adhesive layer for bonding.

1 is a perspective view illustrating a conventional touch panel sensor.
2 is a cross-sectional view of a laminated film for transferring window decoration to an upper glass substrate of a touch panel sensor according to an embodiment of the present invention.
3 is a cross-sectional view of a laminated film bonded to an upper glass substrate in a touch panel sensor according to an embodiment of the present invention.
4 is a cross-sectional view illustrating a process of bonding the laminated film shown in FIG. 3 to the upper glass substrate and removing the release film.
FIG. 5 is a cross-sectional view illustrating a process of covering the side surface of the upper glass substrate by refracting part of the window decoration and the primer layer transferred to the upper glass substrate.
6 is a cross-sectional view illustrating a process of covering a side surface of an upper glass substrate by deflecting a part of a window decoration and a primer layer transferred to an upper glass substrate in a touch panel sensor according to another embodiment of the present invention.
7 is a cross-sectional view illustrating a laminated film according to another embodiment of the present invention and a process of bonding the laminated film to the transparent substrate.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments. For reference, the same numbers in this description refer to substantially the same elements and can be described with reference to the contents described in the other drawings under these rules, and the contents which are judged to be obvious to the person skilled in the art or repeated can be omitted.

The transparent window of the present embodiment includes window decorations disposed on the upper portion of the display to finish the edges thereof. Hereinafter, a method of manufacturing a transparent window according to the present invention will be described in detail with reference to FIGS.

The transparent window referred to in this embodiment can be included in the components of the touch panel sensor. The window decoration is transferred to the upper glass substrate. In the present embodiment, other components of the touch panel sensor placed under the upper glass substrate, for example, the ITO electrodes and the circuit substrate shown in FIG. 1 are not described. Further, the structure of the electrode pattern for sensing the body approach can be applied to the structure already disclosed in the touch panel sensors such as the open No. 10-2011-0092814, 10-2010-0134849, and 10-2011-0095684, A touch panel sensor provided by bonding electrode patterns to two insulating films and bonding them, or a touch panel sensor for arranging electrode patterns on the upper and lower surfaces of one insulating film, The electrode pattern structure of the touch panel sensor providing the electrode pattern on one side of the insulating film can be applied. The film or the substrate on which the electrode pattern is provided can be formed on the upper glass substrate on which the window decoration is transferred via the optical adhesive layer As shown in Fig.

In addition, the display referred to in the present specification may include all flat panel display modules such as an organic light emitting diode (OLED), a liquid crystal display device (LCD), a plasma display panel (PDP) It can be used to mean all over. Thus, a transparent substrate, i. E., A transparent substrate, referred to in this embodiment as an upper glass substrate, may comprise a substrate disposed on top of the listed display modules.

In addition, the transparent window of the present invention is not necessarily placed on the touch panel sensor, but may be placed directly on the display module.

FIG. 2 is a cross-sectional view of a laminated film for transferring window decoration to an upper glass substrate of a touch panel sensor according to an embodiment of the present invention. FIG. 3 is a sectional view of a touch panel sensor according to an embodiment of the present invention, FIG. 4 is a cross-sectional view showing a process of bonding the laminated film shown in FIG. 3 to the upper glass substrate and removing the release film, FIG. 5 is a cross-sectional view showing the window decorations transferred onto the upper glass substrate, Sectional view illustrating a process of refracting a part of the primer layer to cover the side surface of the upper glass substrate.

First, FIG. 2 shows a laminated film 100 for transferring window decorations 140 onto an upper glass substrate.

2, the release film 110, the release agent coating 120, the primer layer 130, and the window decoration 140 are laminated in this order from the bottom.

The primer layer 130 facilitates the formation of the window decorations 140 and forms the window decorations 140 on the upper glass substrate 200 rather than directly forming the window decorations 140 on the sticky release agent coating 120. [ As shown in FIG.

Accordingly, the primer layer may be formed as a frame-like shape of the window decoration in conformity with the boundary of the window decoration at most basically, or may be formed to coincide with the boundary of the release film 110 like the primer layer 140 of this embodiment It is possible.

The primer layer can be provided by applying or printing a liquid curing agent on a release film, curing the liquid curing agent, and applying a synthetic resin film having a thickness of 10 to 30 mu m so as not to require a separate thermal curing treatment or ultraviolet curing treatment It is also possible to use.

3, the laminated film 100 can be brought into close contact with the upper glass substrate 200 via the optical adhesive layer 150. [ As can be seen here, the window decorations 140 are provided directly on the upper glass substrate.

On the other hand, when the ultraviolet curing agent is used as the optical adhesive layer, the ultraviolet curing agent may be applied on the upper glass substrate, the laminate film may be placed on the curing agent, and then the curing agent may be exposed to ultraviolet rays to adhere the laminated film to the upper glass substrate. On the other hand, when an optical adhesive film is used, the laminated film can be directly attached on the upper glass substrate without any additional curing treatment.

4, the release film 110 and the release agent coating 120 are peeled off from the laminated film 100 at one time to form a primer layer 100. After the release film 100 is adhered to the upper glass substrate 200, (130) can be exposed.

On the other hand, the laminated film 100 includes a margin portion 105 extending outward from the boundary of the upper glass substrate 200.

5, the margin portion 105 is bent so that the side surface of the upper glass substrate 200 is partially adhered to the optical adhesive layer 150. As a result, And the window decoration 140 and the primer layer 130 may cover the window decoration 140. It is relatively easy to perform the side finishing process of the display using the margin portion 105 to prevent the light of the display from leaking to the side of the upper glass substrate 200. [

If the thickness of the upper glass substrate used in this embodiment is about 0.5 to 2 mm, it is preferable that the margin portion protrudes outward from the boundary of about 0.1 to 0.3 mm.

When a film or substrate having the same size as that of the upper glass substrate is used, it is necessary to fabricate the same size so as to align with the upper glass substrate. If the boundaries do not match each other during the bonding process, defects may occur. However, if only the window decoration is transferred and bonded, the size of the upper glass substrate can be increased, so that the upper glass substrate can be refracted even if the boundary does not fit, and the light blocking effect can be obtained.

On the other hand, the sheets on which the electrode pattern for sensing the body approach of the touch panel sensor is formed can be bonded through a separate optical adhesive layer. If the window decoration is directly placed on the upper surface of the upper glass substrate without the primer layer, the window decoration can only form a step with the surface of the upper glass substrate at that thickness. To attenuate this step, the optical adhesive layer has a considerable thickness Should be provided.

However, in the present invention, since the primer layer 130 is provided over the window decoration 140 to provide a generally flat surface, there is less concern that the sheet will be refracted by the step of the window decoration 140, It is possible to reduce the thickness. Specifically, conventionally, the thickness of the optical adhesive layer having a thickness of about 100 占 퐉 can be reduced to 25 占 퐉.

The upper glass substrate may be produced by stamping an original plate having a size corresponding to a plurality of upper glass substrates, wherein the laminated film may be stuck to the original plate and then punched out together with the original plate, It may be attached to the upper glass substrate. In this case, the laminated film is provided corresponding to at least one upper glass substrate, and can be cut and used corresponding to one upper glass substrate before being adhered to the upper glass substrate.

For example, the laminated film may be provided at a size corresponding to at least one upper glass substrate, and laminated films of 5 * 5, 6 * 6, 3 * 4, etc. may be formed at once according to the manufacturer's intention.

6 is a cross-sectional view illustrating a process of covering a side surface of an upper glass substrate by deflecting a part of a window decoration and a primer layer transferred to an upper glass substrate in a touch panel sensor according to another embodiment of the present invention.

6, the laminated film has a release film 1110, a release agent coating 1120, a primer layer 1130, and a window decoration 1140 stacked in this order.

When the laminated film is bonded to the upper glass substrate 1200 via the optical adhesive layer 150, the optical adhesive layer 150 is initially pressed in the bonding process even if it is provided substantially coincident with the boundary of the upper glass substrate 1200, The upper glass substrate 1200 may be exposed to the outside of the boundary. However, the boundary of the optical adhesive layer 1150 exposed outside the boundary of the upper glass substrate 1200 is disposed inside the boundary of the window decoration 1140.

The margin 1105 of the laminated film extending outside the boundary of the upper glass substrate 1200 is folded so that the side surface of the upper glass substrate 1200 is partially surrounded by the window decoration 1140 and the primer layer 1130) can cover it. It is relatively easy to perform the side finishing process of the display using the margin portion 1105, thereby preventing the light of the display from leaking to the side of the upper glass substrate 1200.

In this embodiment, the primer layer 1130 and the window decoration 1140 are formed so as to extend outside the boundary of the upper glass substrate 1200, but the primer layer 1130 is located outside the border of the window decoration 1140 .

7, a release layer 2120, a primer layer 2130, a window decoration 2140, a cured layer 2130 covering a primer layer 2130 and a window decoration 2140 are formed on a release film 2110 The release film 2110 and the release agent coating 2120 are separated from the transparent substrate 2200 by bonding the laminated film provided with the multi-coating layer 2170 on the cured layer 2160 to the transparent substrate 2200, I will.

The cured layer 2160 is formed by sequentially laminating a release agent coating 2120, a primer layer 2130 and a window decoration 2140 on a release film 2110 and then a primer layer 2130 and window decorations 2140 And then forming a hair line to be formed on the surface thereof or a mold having a concave-convex portion corresponding to the fine line. In addition, the mold can be brought into close contact with the solution for the cured layer and the solution can be cured to provide the cured layer 2160, wherein the curing agent contained in the solution for the cured layer can be a thermosetting agent, a UV curing agent, Depending on the kind of the curing agent, the solution can be cured through an appropriate curing process such as applying heat or irradiating ultraviolet rays.

Of course, in addition to the formation of fine lines through the mold, it is also possible to provide fine lines by etching the surface of the hardened layer with a laser.

Thereafter, the multi-coating layer 2170 may be provided again on the cured layer 2160 where the fine lines are formed on the surface.

The laminated film formed through the above-described process can be adhered to the transparent substrate 2200 via the optical adhesive layer 2150 as shown in Fig.

At this time, the optical adhesive layer 2150, which was initially provided in conformity with the outer boundary of the transparent substrate 2200, partially protruded, but the primer layer 2130 and the window decoration 2140 protruded from the outer boundary of the transparent substrate 2200 It is possible to fold the margin portion including the transparent substrate edge.

Although the present invention has been described with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that

100: laminated film 105: margin portion
110: release film 120: release agent coating
130: primer layer 140: window decoration
150: optical adhesive layer 200: upper glass substrate

Claims (21)

A method of manufacturing a transparent window disposed above a display including window decorations,
Providing a laminated film comprising a release film, a release agent coating formed on the release film, a soft primer layer provided on the release agent coating, and window decorations provided on the primer layer;
Adhering the laminated film to a transparent substrate through an optical adhesive layer; And
Removing the release film to transfer the window decoration to the transparent substrate;
Wherein the laminated film includes a margin portion extending outside a boundary of the transparent substrate, the laminated film is brought into close contact with the transparent substrate, and then the margin portion is refracted to cover the side surface of the transparent substrate, Layer and the window decoration are formed so as to extend outside the boundary of the transparent substrate, wherein the primer layer is formed so as to extend further outward than the boundary of the window decoration,
Wherein the optical adhesive layer is exposed to the outside of the boundary of the transparent substrate in the process of closely adhering the laminated film to the transparent substrate and is disposed inside the boundary of the window decoration, Wherein the window decoration is attached to the side surface of the transparent substrate by an adhesive layer, and the window decoration directly covers the side surface of the transparent substrate to prevent the side light leakage. delete delete delete delete delete The method according to claim 1,
The primer layer is formed by applying a liquid curing agent on the release film,
Wherein the liquid curing agent is provided by curing the liquid curing agent. The method according to claim 1,
Wherein the primer layer comprises a urethane-based synthetic resin. The method according to claim 1,
Wherein the optical adhesive layer comprises an ultraviolet curing agent. The method according to claim 1,
Wherein the optical adhesive layer comprises an optical adhesive film. The method according to claim 1,
Wherein the laminated film is provided corresponding to at least one of the transparent substrates and is cut to correspond to the transparent substrate before being adhered to the transparent substrate. The method according to claim 1,
And forming an electrode for a touch panel sensor on the transferred primer layer. The method according to claim 1,
And providing a touch panel sensor below the transferred primer layer. ≪ Desc / Clms Page number 22 > The method according to claim 1,
A multi-coating layer is provided on the cured layer covering the window decoration and the primer layer, and on the cured layer,
Wherein the transparent window is transferred to the transparent substrate together with the window decoration. 15. The method of claim 14,
Wherein the multi-coating layer comprises fine lines formed on the cured layer in correspondence with the window decorating area. 15. The method of claim 14,
Wherein the multi-coating layer comprises silicon dioxide or titanium dioxide. ≪ RTI ID = 0.0 > 11. < / RTI > A transparent window disposed over a display including window decorations,
A transparent substrate;
A soft primer layer transferred to the transparent substrate;
A window decoration interposed between the primer layer and the transparent substrate and transferred to the transparent substrate together with the primer layer;
Wherein the primer layer and the window decorations comprise a release film, a release agent coating formed on the release film, a primer layer provided on the release agent coating, and a laminated film comprising the window decoration provided on the primer layer, Wherein the transparent film is transferred onto the transparent substrate through an optical adhesive layer, the release film is removed, and the laminated film includes a margin portion extending outside the boundary of the transparent substrate, Wherein the primer layer and the window decoration are formed to extend outward from the boundary of the transparent substrate, wherein the primer layer is formed so as to be closer to the boundary of the window decoration than the boundary of the window decoration And is formed to extend outwardly,
Wherein the optical adhesive layer is exposed to the outside of the boundary of the transparent substrate in the process of closely adhering the laminated film to the transparent substrate and is disposed inside the boundary of the window decoration, Wherein the window decoration is attached to the side of the transparent substrate by an adhesive layer, and the window decoration directly covers the side of the transparent substrate to prevent the side light leakage. delete delete delete 18. The method of claim 17,
Wherein the multi-coating layer is provided on the cured layer covering the window decoration and the primer layer, and a multi-coating layer on the cured layer.

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