WO2019235812A1

WO2019235812A1 - Lamination method for enabling four-sided edge-type window substrate having corners on all sides to display on corners and lamination apparatus therefor

Info

Publication number: WO2019235812A1
Application number: PCT/KR2019/006721
Authority: WO
Inventors: 한관영
Original assignee: 단국대학교 천안캠퍼스 산학협력단
Priority date: 2017-06-08
Filing date: 2019-06-04
Publication date: 2019-12-12
Also published as: KR102076285B1; KR20180134302A; CN111263699A

Abstract

The present invention relates to a lamination method and a lamination apparatus therefor, which enable even the corners on all sides of an edge-type display window substrate to be smoothly laminated such that display and touch functions may be implemented on the corners.

Description

Lamination method and lamination apparatus for enabling the display of the corners of the four-sided edge-type window substrate having corners on all sides

The present invention relates to a lamination technology of a window substrate, and in particular, a lamination method for enabling the display and touch functions of the corner portion by enabling the lamination smoothly to the edge portion including the edge portions located on all sides of the edge-type display window substrate, and the same It relates to a lamination device.

In general, in order to implement a flexible display, a lamination process of bonding a flexible display panel (backplane) to a window substrate is essentially performed.

1 is a view showing a lamination process according to the prior art, a method of pressing while pressing with a roller or squeeze while applying OCA between the window substrate and the backplane as shown.

However, this method is difficult to perform the lamination process when the end of the window substrate is bent inward to form an annular shape, especially in the case of the edge-type display window substrate as shown in Figures 2a and 2b Laminating to enable display and touch functionality in the system was an extremely difficult process with existing technologies.

If it can be laminated to corners and edges located on all sides of the window substrate, BM (Black Matrix) can be prevented from appearing on the window surface, and at the same time, a separate display and touch function can be implemented in the corresponding area. We will be able to develop more advanced products. Therefore, the development of technology to solve the above problems in the current process is urgently needed.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, and an object of the present invention is to enable the laminating of corners including edges located on all sides of the edge type display window substrate, and to display and touch corners. The present invention provides a lamination method and a lamination device for implementing the function.

In order to achieve the above object, the lamination method according to the technical idea of the present invention is a lamination method for laminating an edge-type window substrate and a backplane having edge portions and corner portions around a main body, and preparing a backplane. And a rectangular body portion adhered to the rear surface of the main body of the window substrate, and a plurality of wing portions formed to extend from the sides of the rectangular main body portion so as to be bonded to the edge portions and the corner portions of the window substrate. step; Applying an OCA to the entire backplane in the form of a development view to form an OCA layer; Forming a backplane having a shape corresponding to the window substrate by closely pressing the backplane in a developed view to the upper mounting portion of the lower pressing pad; It characterized in that the technical configuration comprising the step of main compression on the back surface of the window substrate press-fit the upper surface mounting portion of the lower pressing pad.

Here, the wing portion may be wired to implement an image output and a touch function like a rectangular body portion.

In addition, the pressing of the backplane to the upper surface mounting portion of the lower pressing pad is characterized in that it is carried out by pressing while sequentially moving the rollers in the X and Y directions perpendicular to each other while the OCA protective film is coated on the front surface of the OCA layer. Can be.

In addition, the upper pressing pad is made of an elastic material formed to have a shape corresponding to the front surface of the window substrate, pressurized by a roller during the pressing of the back plane to the upper surface mounting portion of the lower pressing pad, and then the back plane again with the upper pressing pad It may be characterized in that the backplane wing portion in the form of a development view is pressed against the upper mounting portion of the lower pressing pad in a shape corresponding to the edge portion and the corner portion of the window substrate.

In addition, the lower compression pad is provided with an air suction hole for suctioning air from the upper surface mounting portion is adsorbed backplane to the upper surface mounting portion of the lower pressing pad adsorbs the backplane to maintain a pressurized state Can be.

In addition, the lower compression pad is further formed with an air chamber for inflation by injecting air into the upper surface mounting portion is formed when the back plane to the window substrate by pressing the upper surface mounting portion of the lower compression pad when the main compression of the back plane to the window substrate It can be characterized by the close contact.

In addition, when the main plane of the backplane on the window substrate back compression may be characterized in that the ultraviolet irradiation to the OCA layer.

On the other hand, the lamination device according to the present invention is a lamination device for laminating an edge-type window substrate and the backplane having an edge portion and a corner portion around the main body around the main body, having a top surface mounting portion to which the backplane is pressed and the rear surface of the window substrate A lower compression pad made of an elastic material for main compression of the backplane with the OCA layer formed on the front surface thereof; A lower jig supporting the lower compression pad from the lower side; A wired backplane in the form of a flat pattern consisting of a rectangular body portion bonded to correspond to the rear surface of the window substrate and a plurality of wings extending from the sides of the rectangular body portion to be bonded to the edge portions and corner portions of the window substrate. It characterized in that it comprises a; a pressing member for pressing and pressing by pressing the upper surface mounting portion of the lower pressing pad.

Here, the pressing member may be a roller for pressing the backplane by the rubbing while moving in the X and Y directions perpendicular to each other.

In addition, the lower pressing pad may be provided with an air suction hole for sucking air from the upper surface mounting portion to adsorb the backplane pressed against the upper surface mounting portion to maintain the pressed state.

The lower pressing pad may further include an air chamber configured to inflate and expand air by injecting air into the upper mounting portion, so that the backplane is pressed by the upper mounting portion of the lower pressing pad when the backplane is pressed against the window substrate. It may be characterized in that it can be in close contact with the back.

The apparatus may further include an upper pressing pad of an elastic material supporting the front surface of the window substrate and an upper jig supporting the upper pressing pad from the upper side when the back plane is main pressed against the rear surface of the window substrate.

In addition, the upper compression pad and the upper jig, when pressing the backplane against the upper surface mounting portion of the lower pressing pad again presses the backplane pressed by the rollers so that the backplane wing portion corresponds to the edge portion and the corner portion of the window substrate It may be characterized in that it is pressed to the upper pressing pad in the shape.

In addition, the lower compression pad and the lower jig, the upper compression pad and the upper jig is made of a transparent material is installed in the vacuum pump, the lower compression in the vacuum pump when the main material of the backplane to the back of the window substrate The pad and the lower jig, the upper pressing pad and the upper jig can be characterized in that it further comprises an ultraviolet irradiation member for irradiating the ultraviolet ray to the OCA layer.

Lamination method according to the present invention and lamination apparatus for the same is possible to implement the display and touch functions of the corner portion by enabling the lamination smoothly to the edge portion, including the edge portion located on all sides of the edge-type display window substrate.

1 is a reference diagram for explaining a lamination process according to the prior art.

2A and 2B are a perspective view and a plan view of a four-sided edge window substrate

Figure 3 is a plan view for explaining a backplane of the development form used in the lamination method according to an embodiment of the present invention

4 is a block diagram showing the overall configuration of the lamination apparatus used in the lamination method according to an embodiment of the present invention

5 and 6 are cross-sectional views for explaining the configuration of the lower pressing pad in the lamination apparatus according to an embodiment of the present invention.

7 to 15 are a series of reference diagrams for explaining the lamination method according to an embodiment of the present invention.

110: lower compression pad 120: lower jig

130: upper jig 140: upper compression pad

With reference to the accompanying drawings will be described in detail a lamination method and a lamination apparatus for the same according to embodiments of the present invention. As the inventive concept allows for various changes and numerous modifications, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific form disclosed, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements. In the accompanying drawings, the dimensions of the structure is shown to be larger than the actual size for clarity of the invention, or to reduce the actual size to understand the schematic configuration.

In addition, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

FIG. 3 is a plan view illustrating a backplane of an exploded view shape used in a lamination method according to an embodiment of the present invention, and FIG. 4 is a block diagram showing an overall configuration of a lamination device used in a lamination method according to an embodiment of the present invention. 5 and 6 are cross-sectional views for explaining the configuration of the lower pressing pad in the lamination apparatus according to an embodiment of the present invention, Figures 7 to 15 are a series for explaining the lamination method according to an embodiment of the present invention. See also.

Lamination method according to an embodiment of the present invention is a rectangular body portion (B1) bonded to correspond to the back surface of the main body (W1) of the window substrate without preparing a back plane (back plane) as shown in Figure 3, It is prepared in the form of a developed view consisting of a plurality of wing portions (B2) formed to extend from the sides of the rectangular body portion (B1) to be bonded to correspond to the edge portion (W2) and the corner portion (W3) of the window substrate. In the backplane of the developed view, not only the rectangular main body portion B1 but also the wing portion B2 is prepared by wiring. However, the wing portion (B2) may be formed on all sides of the rectangular body portion (B1) as shown in the drawing may be selectively formed only on some sides. Through such a core configuration, the edge portion W2 and the corner portion W3 are completely omitted with respect to the rectangular edge-type window substrate having the edge portion W2 and the corner portion W3 around the main body W1. The backplane can be bonded, and the image output and the touch function can be realized up to the edge portion and the corner portion W3 of the window substrate.

Of course, the use of only the wired flat pattern backplane does not automatically join the backplane to the edge portion W2 and the corner portion W3 of the window substrate, which have been considered difficult in the past, and require detailed configurations. do.

Hereinafter, a lamination method lamination apparatus according to an embodiment of the present invention will be described in detail.

First, a lamination apparatus for sequentially performing a lamination method according to an exemplary embodiment of the present invention will be described with reference to FIG. 4. The vacuum chamber, the lower compression pad 110 installed in the vacuum chamber, the lower jig 120, and the upper compression pad. 140, the upper jig 130, a pressing member, and an ultraviolet irradiation member. Hereinafter, each of the above components will be described.

The vacuum chamber serves to provide an enclosed space therein so that other components can be installed.

The lower compression pad 110 is one of the most important components in the lamination apparatus according to an embodiment of the present invention, and has an upper surface mounting portion to which the backplane of the exploded view form is pressed and the OCA layer is formed on the front surface of the window substrate back surface. It also serves to compress the backplane in a state. Since the lower compression pad 110 directly faces the backplane, it is preferable that the lower compression pad 110 is made of silicon or similar material having elasticity. Here, the lower compression pad 110 has an air suction hole 111 to suck air from the upper surface mounting portion as shown in FIG. 5. As a result, the backplane pressurized by the upper mounting portion can be adsorbed to stably maintain the pressed state. In addition, the lower compression pad 110 further includes an air chamber 113 for inflation by injecting air into the upper mounting portion. As a result, as shown in FIG. 13, the backplane may be closely adhered to the rear surface of the window substrate without generating bubbles by squeezing the upper surface mounting portion of the lower pressing pad 110 when the main plane is pressed against the window substrate.

The lower jig 120 serves to support the lower compression pad 110 from the lower side. Here, the lower jig 120 has an air suction hole 111 formed in communication with the lower compression pad 110 as shown in FIG. 5, and the air of the lower compression pad 110 is shown in FIG. 6. An air injection hole 112 connected to the chamber 113 is formed. Meanwhile, a separate vacuum pump (not shown) is provided to suck and inject air and is connected to the air suction hole 111 and the air injection hole 112.

The pressing member serves to press the backplane in the form of an exploded view in the form of rubbing against the upper mounting portion of the lower pressing pad 110. The pressing member is composed of an X-direction roller and a Y-direction roller, and basically serves to press-fit the rectangular body portion B1 of the backplane to the lower pressing pad 110 as shown in FIGS. 7 to 9. The roller and the Y-direction roller can also be press-bonded to the wing portion B2 of the backplane through a configuration in which the roller is raised and lowered along the curved surface of the upper mounting portion of the lower compression pad 110.

The upper compression pad 140 basically serves to support the front surface of the window substrate from the upper side during the main compression of the backplane to the rear surface of the window substrate as shown in FIGS. 12 and 13. Further, in the present invention, the upper pressing pad 140 serves to pressurize the backplane again in the first pressurized state by the roller during the pressing of the backplane to the upper mounting portion of the lower pressing pad 110 as shown in FIG. 10. It is composed. As such, when the upper pressing pad 140 is used for pressure bonding of the backplane, it is possible to closely compress the upper mounting portion of the lower pressing pad 110 while gathering the backplane wing portion B2 in the form of a developed view, so that the edge portion of the window substrate is It can be noted that it can be formed in a perfect shape corresponding to the and corner portions. To this end, the upper compression pad 140 is formed in a shape corresponding to the front shape of the window substrate and is made of a material having an elastic material such as silicon.

Although not shown in detail in the drawing, it is preferable to form the air suction hole 111 in the upper compression pad 140 as well as the lower compression pad 110. According to the configuration in which the air suction hole 111 is formed in the upper compression pad 140 as described above, the window substrate can be lifted in an adsorbed state, and thus main compression of the backplane can be performed smoothly.

The upper jig 130 serves to lift and support the upper pressing pad 140 from above. At this time, the lifting operation of the upper jig 130 is performed by installing an actuator 150 such as a cylinder. However, whether to raise or lower the upper jig 130 or lower jig 120 to the actuator 150 for the main compression of the backplane can be selectively configured.

The ultraviolet irradiation member is the lower pressing pad 110 and the lower jig 120, the upper pressing pad 140 and the upper jig 130 which is a transparent material when the main plane of the backplane to the rear surface of the window substrate in the vacuum pump. ) And transmits ultraviolet rays to the OCA layer. Irradiating ultraviolet rays during the main compression of the backplane using the ultraviolet irradiation member can adjust the curing rate for the OCA layer and help block the generation of bubbles. In order to irradiate ultraviolet rays together with the main compression in the vacuum chamber, the lower compression pad 110 and the lower jig 120, the upper compression pad 140 and the upper jig 130 should be made of a transparent material.

Subsequently, the lamination method performed using the lamination apparatus described above will be described.

First, a step of preparing a backplane is performed. In the present invention, as shown in FIG. 3, the backplane is extended from each side of the rectangular body portion B1 and the sides of the rectangular body portion B1 that are bonded to correspond to the rear surface of the body of the window substrate. It is prepared in the form of a developed view consisting of a plurality of wings (B2) formed to be bonded to correspond to the edge portion and the corner portion of the window substrate. At this time, the wing portion B2 of the backplane is wired to implement an image output and a touch function like the rectangular body portion B1. However, the wing portion (B2) may be formed on all sides of the rectangular body portion (B1) as shown in the drawing may be selectively formed only on some sides.

Thereafter, the step of forming the OCA layer by applying the OCA on the entire backplane in the form of a development view. At this time, the front surface of the OCA layer is coated with an OCA protective film (OCA P / f) to prepare for subsequent rubbing work.

Thereafter, a step of forming a backplane having a shape corresponding to the window substrate by closely pressing the backplane in a developed view to the upper mounting portion of the lower pressing pad 110 is performed. To this end, as shown in FIG. 7, the backplane in which the OCA protective film is coated on the entire surface of the OCA layer by the roller is pressed while rubbing the upper mounting portion of the lower pressing pad 110. In this case, it is convenient for the roller to sequentially use the X-direction roller and the Y-direction roller which move in the orthogonal direction to each other as shown in FIGS. 8 and 9.

In the state in which the backplane is rubbed by a roller and is primarily pressed, the upper press pad 140 is lowered to the lower press pad 110 as shown in FIG. 10 to pressurize the backplane again. When the upper pressing pad 140 made of an elastic material formed to have a shape corresponding to the front surface of the window substrate is used for pressing bonding of the backplane, the lower pressing pad (B2) collects the ends of the backplane wing part B2 in the form of a developed view at the corners. The upper surface mounting portion 110 may be closely pressed to form a perfect shape corresponding to the edge portion and the corner portion of the window substrate.

Thereafter, as shown in FIG. 11, the air suction hole 111 provided in the lower pressing pad 110 sucks air from the upper surface mounting portion to adsorb the compressed backplane to stably maintain the pressed state. . The adsorption by vacuum pressure is carried out continuously until the main compression of the backplane to the window substrate.

Thereafter, as shown in FIGS. 12 and 13, the upper jig 130 and the upper compression pad 140 are lowered to perform the main pressing operation of the backplane on the window substrate. In this case, when the air chamber 113 is expanded through the air injection hole 112 of the lower pressing pad 110, the backplane is tightly adhered to the rear surface of the window substrate by squeezing the upper mounting portion of the lower pressing pad 110. You can do it.

Subsequently, during the main compression as shown in FIG. 14, the step of irradiating ultraviolet rays to the OCA layer by the ultraviolet irradiation member is performed. This can control the curing rate for the OCA layer and can block the generation of bubbles.

When the lamination process is completed through the above steps, the product is separated from the lower compression pad 110 by lifting the upper compression pad 140 and the upper jig 130 as shown in FIG. 15.

Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

Claims

A lamination method for laminating an edge-type window substrate having an edge portion and a corner portion along a periphery around a main body and a backplane,

A plan view of a backplane comprising a rectangular body portion bonded to correspond to a rear surface of a window substrate, and a plurality of wings extending from a side of the rectangular body portion to be bonded to correspond to edge portions and corner portions of the window substrate. Preparing to;

Applying an OCA to the entire backplane in the form of a development view to form an OCA layer;

Forming a backplane having a shape corresponding to the window substrate by closely pressing the backplane in a developed view to the upper mounting portion of the lower pressing pad;

And pressing the backplane pressed against the back surface mounting portion of the lower pressing pad to the rear surface of the window substrate.
The method of claim 1,

Lamination method, characterized in that the wiring to the wing portion to implement the image output and the touch function, like the rectangular body portion.
The method of claim 1,

Pressing of the backplane to the upper surface mounting portion of the lower pressing pad is carried out by pressing while sequentially moving the rollers in the X and Y directions perpendicular to each other while the OCA protective film is coated on the front surface of the OCA layer. .
The method of claim 3,

An upper compression pad made of an elastic material formed to have a shape corresponding to the entire surface of the window substrate,

When pressing the backplane against the upper surface mounting portion of the lower pressing pad by pressing the backplane by pressing the backplane with the upper pressing pad again to develop the backplane wing portion in the shape of a plan view corresponding to the edge portion and the corner portion of the window substrate Lamination method characterized in that the pressing on the upper surface mounting portion of the pad.
The method of claim 2,

The lower compression pad is formed with an air suction hole for sucking air from the upper surface mounting portion, the lamination method characterized in that to maintain the pressing state by adsorbing the backplane when pressing the backplane to the upper surface mounting portion of the lower pressing pad .
The method of claim 5,

The lower compression pad is further formed with an air chamber for inflation by injecting air into the upper surface mounting portion to closely contact the backplane to the rear surface of the window substrate by squeezing the upper surface mounting portion of the lower compression pad when the main surface of the back plane is pressed against the window substrate. Lamination method characterized in that.
The method of claim 1,

Lamination method, characterized in that to irradiate the ultraviolet light to the OCA layer during the main compression of the backplane to the window substrate.
Lamination apparatus for laminating an edge-type window substrate having a corner portion and a corner portion around the main body and the backplane,

A lower pressing pad made of an elastic material having an upper surface mounting portion to which the backplane is pressed, and main compression of the backplane with the OCA layer formed on the front surface with respect to the rear surface of the window substrate;

A lower jig supporting the lower compression pad from the lower side;

A wired backplane in the form of a flat pattern consisting of a rectangular body portion bonded to correspond to the rear surface of the window substrate and a plurality of wings extending from the sides of the rectangular body portion to be bonded to the edge portions and corner portions of the window substrate. A pressing member for pressing the upper pressing portion to the upper mounting portion of the lower pressing pad;

Lamination apparatus comprising a.
The method of claim 8,

The pressing member is a lamination apparatus, characterized in that the roller for pressing the backplane by the rubbing while moving in the X and Y direction perpendicular to each other.
The method of claim 8,

The lower pressing pad has an air suction hole for sucking air from the upper surface mounting portion, and the backplane pressed onto the upper surface mounting portion to adsorb the backplane to maintain the pressed state.
The method of claim 10,

The lower compression pad further includes an air chamber for inflation and inflation of air into the upper mounting portion, and the backplane is pressed against the rear surface of the window substrate by squeezing the upper mounting portion of the lower pressing pad when the backplane is pressed against the window substrate. Lamination device characterized in that the close contact
The method of claim 8,

And an upper pressing pad made of an elastic material supporting the front surface of the window substrate and an upper jig supporting the upper pressing pad from an upper side when the back plane is main pressed against the rear surface of the window substrate.
The method of claim 12,

The upper pressing pad and the upper jig have a shape in which the backplane wing portion corresponds to an edge portion and a corner portion of the window substrate by pressing the backplane pressed again by the roller when pressing the backplane against the upper surface mounting portion of the lower pressing pad. Lamination apparatus characterized in that to be pressed to the upper pressing pad.
The method of claim 12,

The lower pressing pad and the lower jig, the upper pressing pad and the upper jig are made of a transparent material and installed in a vacuum pump.

The vacuum pump further includes an ultraviolet irradiation member for irradiating ultraviolet rays to the OCA layer through the lower pressing pad and the lower jig, the upper pressing pad and the upper jig, which are transparent materials when the back plane is pressed against the back surface of the window substrate. Lamination apparatus characterized in that.