KR20180089609A - Silicon jig and method for laminating a window using the same - Google Patents

Abstract

The present invention is to provide a silicon jig and a window bonding method using the same. According to an embodiment of the present invention, the silicon jig is used in bonding a film to a window, by downwardly compressing the film as descending towards the window from the upper part of the film when manufacturing a touch screen display device. The silicon jig has the bottom surface which is composed of a first quadrant to a fourth quadrant. The first quadrant to the fourth quadrant are rectangles which respectively have a first vertex that is positioned at the center of the bottom surface thereof, a second vertex and a third vertex that are adjacent to the first vertex, and a fourth vertex that is not adjacent to the first vertex. The first vertex is higher than the second vertex and the third vertex in a lower direction while the second vertex and the third vertex are higher than the fourth vertex in the lower direction. Therefore, the silicon jig and the window bonding method using the same can prevent generation of trap bubbles when bonding a film to a window composed of four-side edge glass, and can prevent generation of creases at four corners thereof.

Description

TECHNICAL FIELD [0001] The present invention relates to a silicon jig,

The present invention relates to a manufacturing method of a touch screen display device, and more particularly, to a silicon jig for downwardly pressing a film down from a top of a film aligned to a window toward a window, .

Generally, a display device such as a smart phone or a tablet PC has a window, a touch screen panel (TSP), and a display panel sequentially stacked from the outside. The window is the cover glass of the display device. The touch screen panel (TSP) and the display panel form one module. Display panels include LCD display panels and active (AM) organic light emitting diode (OLED) panels. Deco films can be stacked between the window and the touch screen panel (TSP).

In the manufacturing process of the display device, a process of attaching a film laminated with a substrate (e.g., a deco film, a POL, an LCD, etc.) and a protective film to a window is performed.

Patent Document 1 (KR10-1588600 B1) discloses a window laminating apparatus for laminating a panel having a protective film adhered to a window having an edge perpendicular to both ends at 90 degrees, and a window laminating method using the same.

The method of attaching a window according to Patent Document 1 includes the steps of clamping both ends of a protective film through a clamper by supplying a protective film to which a panel is adhered, stretching the protective film by tilting up the protective film by first lifting the compression block, Bending both side ends of the panel together with the protective film through a second rise of the compression block and a lowering and movement of the clamper and a step of raising the compression block for the third time so that gradual adhesion is achieved in both directions of the window edge from the longitudinal center of the panel Thereby completing the cementation.

The pressing block of Patent Document 1 pushes up the protective film and maintains a length corresponding to the protective film at a predetermined height. On the upper surface, a contact surface contacting the bottom of the protective film is curved, So that the cementation is made in both directions from the longitudinal center of the panel to the edge.

At this time, the curved shape of the contact surface is formed at the highest position where the center portion in the longitudinal direction of the panel is placed, and is formed to have a curvature gradually decreasing toward the width direction of the panel, that is, toward both edges of the window.

Also, the compression block is made of silicon, which is a material capable of elastic deformation so that the combining force when the panel and the window are attached together can be gradually progressed from the center of the panel to both edges.

Such conventional pressing blocks progressively adhere the film to the edges of both ends of the window after the film is in contact with the center of the window. Thus, in the case where the two-sided edge glass formed at both ends of the edge is used as a window, there is no serious problem even if the film is stuck to such a conventional compression block.

However, when a four-sided edge glass formed on the edge of each of the four sides is used as a window, when the film is attached to the window with such a conventional compression block, trap bubbles are generated when the window and the film are in surface contact, There was a problem that wrinkles of the film occurred at the four corners.

Thus, the conventional compression block can be applied to a window made of a two-sided edge glass, but it is difficult to apply a film to a window made of a four-sided edge glass because it is difficult to apply.

KR 10-1588600 B1

The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a silicone jig capable of preventing the occurrence of trap bubbles and wrinkles at the corners when used as a compression block for adhering a film to a window made of a four- .

In order to solve the above problems, a silicon jig according to an embodiment of the present invention is used for lowering the film down from the upper portion of the film to the window during manufacture of the touch screen display device, will be. The silicon jig has a bottom surface formed from a first quadrant to a fourth quadrant. The first to fourth quadrants are squares having a first vertex located at the center of the lower surface, a second vertex and a third vertex adjacent to the first vertex, and a fourth vertex not adjacent to the first vertex . The first vertex is higher in the lower direction than the second vertex and the third vertex, and the second vertex and the third vertex are higher in the lower direction than the fourth vertex.

Preferably, the first to fourth quadrants are inclined planes of 5 to 10 degrees.

Preferably, the outer edge of the lower surface has a radius of curvature of 5R or less.

According to an aspect of the present invention, there is provided a method for attaching a window according to an embodiment of the present invention, comprising: clamping both ends of a film; The silicon jig according to an embodiment of the present invention downwardly urges the film downward toward the window to make the center of the film point-contact with the center of the window; And extending the surface contact area of the film and the window gradually toward the outside of the point-contacted portion by downwardly pressing the film while the silicon jig descends toward the window.

According to the present invention, the silicon jig can gradually adhere to the film in all directions after point-contact with the center of the window. Accordingly, it is possible to prevent trap bubbles from being generated when the film is adhered to the window made of the four-sided edge glass, and to prevent wrinkles of the film from occurring at the four corners.

In addition, since the silicon jig according to the present invention is applicable not only to a case where a film is adhered to a window made of a four-sided edge glass but also when a film is adhered to a window made of a two-sided edge glass, ) Cost can be saved.

1 is a perspective view of a silicon jig according to an embodiment of the present invention, which is viewed from below.
2 is a bottom view of the silicon jig of Fig.
3 is a front view of the silicon jig of Fig.
Figure 4 is a side view of the silicon jig of Figure 1;
5 is an embodiment of a window to which the silicon jig of FIG. 1 is applied.
6 is a cross-sectional view taken along the line I-I 'in Fig.
7 is a cross-sectional view of II-II 'of FIG.
8 is a configuration diagram of a window sticking apparatus using the silicon jig of FIG.
FIG. 9 is a flow chart of a window bonding method according to an embodiment of the present invention.
FIG. 10 shows a state in which the silicon jig descends in FIG. 8 and the lower tip of the silicon jig contacts the film.
Fig. 11 shows a point-contacted portion of the film in the window when the silicon jig descends and the center portion of the film is point-contacted with the center portion of the window in Fig.
Fig. 12 shows a state in which the point contact of Fig. 11 is extended to the surface contact.
Fig. 13 shows a state in which the surface contact of Fig. 12 is extended to a part of the edge region.
Fig. 14 shows a state in which the surface contact of Fig. 13 is extended to the four corners of the edge region.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to be illustrative of the present invention and not to limit the scope of the invention. Should be interpreted to include modifications or variations that do not depart from the spirit of the invention.

Although the terms used in the present invention have been selected in consideration of the functions of the present invention, they are generally used in general terms. However, the present invention is not limited to the intention of the person skilled in the art to which the present invention belongs . However, if a specific term is defined as an arbitrary meaning, the meaning of the term will be described separately. Accordingly, the terms used herein should be interpreted based on the actual meaning of the term rather than on the name of the term, and on the content throughout the description.

The drawings attached hereto are intended to illustrate the present invention easily, and the shapes shown in the drawings may be exaggerated and displayed as necessary in order to facilitate understanding of the present invention, and thus the present invention is not limited to the drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of known configurations or functions related to the present invention will be omitted when it is determined that the gist of the present invention may be obscured.

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

1 is a perspective view of a silicon jig 130 according to an embodiment of the present invention. Referring to FIG. 1, the silicon jig 130 is used for manufacturing a touch screen display device, for lowering the film down from the upper portion of the film aligned to the window toward the window, and attaching the film to the window.

The silicon jig 130 is formed of silicon and is elastically deformable. The silicon jig 130 has a lower surface made up of first to fourth quadrants 131 to 134.

2 is a bottom view of the silicon jig 130 of FIG. Referring to FIG. 2, the first to fourth quadrants 131 to 134 each have a first vertex located at the center of the lower surface of the silicon jig 130, a second vertex and a third vertex adjacent to the first vertex, 1 is a rectangle with a vertex and a fourth vertex that is not adjacent.

The first quadrant 131 has a first vertex P ₀ located at the center of the lower surface of the silicon jig 130, a second vertex P ₁ adjacent to the first vertex P ₀ and a third vertex P ₃ ), A first vertex P ₀ and a fourth vertex P ₂ that are not adjacent to each other.

The second quadrant 132 includes a first vertex P ₀ located at the center of the lower surface of the silicon jig 130, a second vertex P ₃ adjacent to the first vertex P ₀ and a third vertex P ₅ ), A first vertex P ₀ and a fourth vertex P ₄ that are not adjacent to each other.

The third quadrant 133 has a first vertex P ₀ located at the center of the lower surface of the silicon jig 130, a second vertex P ₅ adjacent to the first vertex P ₀ and a third vertex P ₇ ), A first vertex P ₀ and a fourth vertex P ₆ that are not adjacent to each other.

The fourth quadrant 134 has a first vertex P ₀ located at the center of the lower surface of the silicon jig 130, a second vertex P ₇ adjacent to the first vertex P ₀ and a third vertex P ₁ ), A first vertex P ₀ and a fourth vertex P ₈ that are not adjacent to each other.

The outer edge of the lower face of the silicon jig _{(130) (P 2, P} 3, P 4, P 5, P 6, P 7, section coming back to P ₁ through P ₈ in order from P ₁₎ has a radius of curvature Lt; / RTI > Preferably, the radius of curvature is 5R or less. If the radius of curvature is larger than 5R, there is a higher probability that trap bubble defect occurs in the edge region of the window when the film is attached to the window.

FIG. 3 is a front view of the silicon jig 130 of FIG. 1, and FIG. 4 is a side view of the silicon jig 130 of FIG. 3 and 4, the lower direction, the height of the first corner downwards height _{(P 0) (h 0)} , the second vertex and the third vertex _{(P 1, P 3, P} 5, P 7) ( h _1,3,5,7), the fourth corner point _{(P 2, P 4, P} 6, P 8 downward direction height (h _2,4,6,8) of a) is h _0> h _{1,3,5 ,} to satisfy the condition of _7> h _2,4,6,8.

That is, the first corner point (P ₀₎ of the second corner and the third corner point _{(P 1, P 3, P} 5, P 7) higher and in the downward direction, the second corner and the third corner point (P _1, P _3, P ₅ and P ₇ are lower in the lower direction than the fourth vertexes P ₂ , P ₄ , P ₆ and P ₈ .

Accordingly, the first to fourth quadrants 131 to 134 are formed of inclined surfaces having inclination angles of the same magnitude in different directions with respect to the horizontal plane. Preferably, the inclination angles of the first to fourth quadrants 131 to 134 are 5 to 10 degrees. If the inclination angle is smaller than 5 ° or larger than 10 °, there is a higher probability that trap bubble defects will occur in the edge region of the window when the film is attached to the window.

5 is an embodiment of a window 210 to which the silicon jig 130 of FIG. 1 is applied, FIG. 6 is a cross-sectional view taken along the line I-I 'of FIG. 5, and FIG. 7 is a cross-sectional view taken along a line II- to be. 5 to 7, the window 210 is mounted on a display device such as a smart phone, a tablet PC, or the like as a cover glass.

The window 210 is composed of edge areas 211, 212, 213, and 214 of a curved surface and the middle of the remaining edge areas. That is, the window 210 is composed of a four-sided edge glass.

The window 210 made up of the four-sided edge glass has edge regions 211 and 213 at both ends of the left and right edges as well as edge regions 212 and 214 ). That is, the window 210 composed of the four-sided edge glass has edge areas 211, 212, 213, and 214, which are curved in the entire outer edge.

8 is a configuration diagram of a window bonding apparatus using the silicon jig 130 of FIG. Referring to FIG. 8, a window lacquering apparatus includes a stage 110, a clamp 120, a silicon jig 130, and a vision 150.

The stage 110 fixes the window 210 to the top. The stage 110 fixes the window 210 so that the window 210 does not move during the adherence of the film 220 while being placed on the top of the stage 110. [

In this embodiment, the stage 110 has a groove corresponding to the shape of the outer surface of the window 210 at the upper end, and the window 210 is fixed to the groove with the outer surface thereof facing downward. However, it is also possible for the stage 110 to secure the window 210 to the top in a different manner.

The clamp 120 can secure both ends of the film 220. [ The clamp 120 grasps and fixes both ends of the film 220 aligned to oppose the window, releases the grip, and releases the both ends of the film 220.

In this embodiment, the clamp 120 is used as the fixing means at both ends of the film 220, but other fixing means capable of fixing and releasing the both ends of the film 220 may be used.

The film 220 consists of an upper carrier film 222 and a lower substrate 224. For example, the substrate 224 is a decolor film, POL, LCD, or the like. The substrate 224 has an area corresponding to the window 210. Alignment of the film 220 with respect to the window 210 is accomplished by aligning the substrate 224 against the window 210. The carrier film 222 has opposite ends that exit the substrate 224. The clamp 120 fixes both ends of the film 220 by gripping both ends of the carrier film 222. The film 220 has elasticity.

Alignment means (not shown) may be formed on the clamp 120 and the film 220 so that the clamp 220 is positioned on the film (not shown) with the alignment means formed on the film 220 aligned with the alignment means formed on the clamp. 220 are fixed, both ends of the film 220 are fixed while the film 220 is aligned with the window 210. As shown in FIG.

The silicon jig 130 can move up and down on the axis connecting the center of the silicon jig 130 and the center of the window 210. [ The window bonding apparatus has driving means (not shown) for such upward and downward movement of the silicon jig 130.

The silicon jig 130 waits while the lower edge P ₀ is positioned at the standby position L _{0 in} the adhesion preparing step in which the film 220 is aligned and fixed to the window 210. When the film 220 is aligned with the window 210 and the both ends of the film 220 are fixed and the bonding process is started, the silicon jig 130 descends toward the window 210, The lower tip P ₀ reaches the adhesion start position L _S and comes into contact with the film 220.

The silicon jig 130 continuously descends toward the window 210 and presses the film 220 downward so that the lower apex P ₀ of the silicon jig 130 passes the first position L ₁ , The center portion of the film 220 is brought into point contact with the center portion of the window 210 by the second position L ₂ .

The lower cutting edge of the silicon jig 130 (P ₀₎ to the second position after the early to (L ₂₎ is continuously subjected to a downward pressure, the silicon jig 130, resulting in a silicon fixture 130 includes a lower cutting edge (P ₀ The film 220 is pressed downward gradually toward the second position P ₂ in all directions about the center of the film 220 and gradually progresses toward all directions around the point contact portion between the film 220 and the window 210 The surface contact area of the film 220 and the window 210 is expanded.

When the surface contact between the film 220 and the window 210 is completed to the edge areas 211, 212, 213 and 214 of the window 210 and the adhesion of the window 210 and the film 220 is completed, And the lower edge P ₀ of the silicon jig 130 is again located at the standby position L ₀ .

The vision 150 is for confirming the alignment state of the film 220 and the window 210. The film 220 can be aligned with the window 210 while confirming whether the film 220 is aligned with the window 210 through the vision 150 and when the film 220 is aligned with the window 210, (120) fixes both ends of the film (220).

FIG. 9 is a flow chart of a window bonding method according to an embodiment of the present invention. Referring to FIG. 9, in the step of preparing the cohesion as shown in FIG. 8, the clamp 120 grips both ends of the film 220 and fixes them (S910). At this time, the silicon jig 130 waits with the lower apex P ₀ positioned at the standby position L ₀ .

The film 220 is fixed in alignment with the window 210 fixed to the upper end of the stage 110. Specifically, the film 220 is fixed in a state in which the lower substrate 224 is aligned so as to face the window 210. The alignment can be checked via vision 150.

The silicon jig 130 is lowered toward the window 210 and the lower tip P ₀ of the silicon jig 130 is lowered toward the lower side of the silicon jig 130, Is contacted with the film 220 (S920). 10 shows a state in contact with the lower cutting edge (P _0), a film 220 of a silicon jig 130 by a silicon jig 130 is lowered in FIG.

The silicon jig 130 continues to lower toward the window 210 while pressing the film 220 downward. The central portion of the film 220 is pushed by the lower apex P ₀ of the silicon jig 130 and the center of the window 220 is positioned at the center of the window 210, (S930).

The silicon jig 130 pushes the film 220 downward while the lower tip P ₀ contacts the film 220 and then descends toward the window 210 to lower the silicon jig 130, The point P ₀ of the film 220 reaches the second position L ₂ after passing the first position L ₁ so that the center portion of the film 220 is in point contact with the center portion of the window 210.

11 shows a state in which the center of the film 220 is point-contacted with the central portion of the window 210 in the descending direction of the silicon jig 130 in FIG. FIG.

Since silicon jig 130 to fall on the center of the axis connecting the center of the window 210 of having a high (P ₀₎ in the center silicon jig 130, a state-of-the-art (P ₀₎ of the silicon jig 130 is the The central portion of the film 220 comes into point contact (A) with the central portion of the window 210 as it is lowered to the second position L ₂ .

The silicon jig 130 continuously descends toward the window 210 and presses the film 220 downward so that the film 220 and the window 210 are gradually moved toward all directions around the point- The surface contact area of the window 220 and the window 210 is expanded (S940).

Specifically, even after the lower edge (P ₀ ) of the silicon jig 130 reaches the second position (L ₂ ), the downward pressure is continuously applied to the silicon jig 130, The film 220 is gradually lowered toward the second position L ₂ gradually in all directions with respect to the center P ₀ of the film 220, The area of the surface contact area of the substrate 210 is expanded.

Fig. 12 shows a state (B) in which the point contact in Fig. 11 is extended to the surface contact, and Fig. 13 shows a state in which the surface contact in Fig. 12 extends to a part of the edge areas 211, 212, 213 and 214 14 shows a state (D) in which the surface contact of Fig. 13 extends to the four corner portions 215, 216, 217, 218 of the edge regions 211, 212, 213, 214 will be.

Since the silicon jig 130 has the lower surface made up of the first to fourth quadrants 131 to 134, even when the window to which the film 220 is to be adhered is a window 210 composed of four-sided edge glass, It is possible to prevent trap bubbles from being generated in the surface contact portions B, C and D of the film 210 and the film 220 and to prevent trap bubbles from occurring at the four corners 215, 216, 217 and 218 of the window 210, It is possible to prevent wrinkles from being generated.

When the film 220 contacts the four corners 215, 216, 217 and 218 of the edge regions 211, 212, 213 and 214 of the window 210, the adhesion of the window 210 and the film 220 is completed do.

When cementation of the window 210 and the film 220 is complete, a silicon fixture 130 is then raised so as to be positioned on the lower cutting edge (P _0), the standby position (L ₀₎ waits for the next laminating operation, and then attached to each other in In operation, the window fastener repeats the above steps.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments of the present invention described above can be implemented separately or in combination.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

110: stage 120: clamp
130: Silicone Jig 150: Vision
210: Window 220: Film
222: carrier film 224: substrate

Claims (4)

A silicon jig for lowering the film downward from the upper portion of the film in the manufacturing of the touch screen display device and fixing the film down to the window,
Wherein each of the first to fourth quadrants includes a first vertex located at the center of the lower surface, a second vertex and a third vertex adjacent to the first vertex, Wherein the first vertex and the third vertex are lower than the second vertex and the third vertex, and the second vertex and the third vertex are lower than the fourth vertex, Wherein the silicon jig is high in strength.
The silicon jig according to claim 1, wherein the first to fourth quadrants are inclined at 5 to 10 degrees.
The silicone jig of claim 1, wherein an outer edge of the lower surface has a radius of curvature of 5R or less.
Clamping the clamps at both ends of the film;
4. The method of claim 1, wherein the silicon jig as set forth in any one of claims 1 to 3 downwardly urges the film downward toward the window to make the center of the film point-contact with the center of the window; And
And gradually expanding the surface contact region of the film and the window toward the outside of the point-contacted portion by downwardly pressing the film while the silicon jig descends toward the window. .

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