KR102436260B1 - Lamination device of display device - Google Patents

Abstract

The present invention relates to a lamination device for a display device capable of preventing damage to a display film wound on a winding portion, comprising: a display film unwinding unit for unwinding a display film including a display material; a buffer film unwinding unit for unwinding the buffer film; and a winding part which winds up the display film and the buffer film so that the display film from the display film unwinding part and the buffer film from the buffer film unwinding part overlap each other.

Description

LAMINATION DEVICE OF DISPLAY DEVICE

The present invention relates to a lamination device, and more particularly, to a lamination device for a display device capable of preventing damage to a display film wound on a winding portion.

The display device includes a touch screen panel and a window. The touch screen and the window are joined by an adhesive.

A lamination device for a display device bonds a window and a touch screen panel provided in the form of a film.

The material for a display device such as the above-described touch screen panel and window is wound on a winding part or a winding part in the form of a film. At this time, adjacent portions of the wound film come into contact with each other, thereby causing damage to the film.

An object of the present invention is to solve the above problems, and an object of the present invention is to provide a lamination device for a display device capable of preventing damage to a display film.

A lamination apparatus for a display device according to the present invention for achieving the above object includes: a display film unwinding unit for unwinding a display film including a display material; a buffer film unwinding unit for unwinding the buffer film; and a winding part which winds up the display film and the buffer film so that the display film from the display film unwinding part and the buffer film from the buffer film unwinding part overlap each other.

The display film has an area different from that of the buffer film.

The buffer film overlaps the edges of the display film.

The buffer film overlaps the central portion of the display panel.

The buffer film overlaps both edges and the center of the display panel.

The buffer film may include: a first buffer overlapping one edge of the display film; a second buffer unit overlapping the other edge of the display film to face the first buffer unit; and a third buffer unit overlapping the central portion of the display film positioned between the first buffer unit and the second buffer unit.

The display film further includes a circuit board connected to the display material of the display film.

The buffer film does not overlap the circuit board.

The buffer film is made of any one of rubber, resin and paper.

an unwinding unit for unwinding a display film including a display material; a projection forming unit that receives the display film from the unwinding unit and forms a buffer projection on the display film; and a winding unit for winding the display film from the projection forming unit.

The buffer projection does not overlap the display material.

The buffer projections are located on both edges of the display film.

The display film further includes a circuit board connected to the display material of the display film.

The buffer projection does not overlap the circuit board.

The lamination apparatus for a display device according to the present invention provides the following effects.

The lamination apparatus for a display device according to the present invention includes a winding part on which a buffer film is wound or a winding part on which a display film having a winding or a buffer projection is wound. The buffer film and the buffer protrusion may minimize a contact area between adjacent display film portions to prevent damage to the display film.

1 is a block diagram of a lamination apparatus for a display device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line II′ of FIG. 1 .
FIG. 3 is a view as viewed from the arrow direction of FIG. 1 of the second winding unit of FIG. 1 .
FIG. 4 is another view as viewed from the arrow direction of FIG. 1 of the second winding unit of FIG. 1 .
FIG. 5 is another view as viewed from the arrow direction of FIG. 1 of the second winding unit of FIG. 1 .
FIG. 6 is another view as viewed from the arrow direction of FIG. 1 of the second winding part of FIG. 1 .
FIG. 7 is another view viewed from the arrow direction of FIG. 1 of the second winding unit of FIG. 1 .
8 is a cross-sectional view illustrating a laminated state of the third display film and the buffer film of FIG. 7 .
FIG. 9 is another view as viewed from the arrow direction of FIG. 1 of the second winding unit of FIG. 1 .
10 is a plan view of a third display film including a buffer protrusion.
11 is a cross-sectional view of a third display film wound on a second winding portion of FIG. 10 .
12 is another plan view of a third display film including a buffer protrusion.
13 is a view for explaining a method of forming a buffer protrusion on a third display film.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Accordingly, in some embodiments, well-known process steps, well-known device structures, and well-known techniques have not been specifically described in order to avoid obscuring the present invention. Like reference numerals refer to like elements throughout.

In order to clearly express various layers and regions in the drawings, the thicknesses are enlarged. Throughout the specification, like reference numerals are assigned to similar parts. When a part of a layer, film, region, plate, etc. is said to be “on” another part, it includes not only cases where it is “directly on” another part, but also cases where there is another part in between. Conversely, when we say that a part is "just above" another part, we mean that there is no other part in the middle. Also, when a part of a layer, film, region, plate, etc. is said to be “under” another part, it includes not only the case where the other part is “directly under” but also the case where there is another part in the middle. Conversely, when we say that a part is "just below" another part, it means that there is no other part in the middle.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe a correlation between an element or components and other elements or components. The spatially relative terms should be understood as terms including different orientations of the device during use or operation in addition to the orientation shown in the drawings. For example, when an element shown in the figures is turned over, an element described as "beneath" or "beneath" another element may be placed "above" the other element. Accordingly, the exemplary term “below” may include both directions below and above. The device may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

In the present specification, when a part is said to be connected to another part, it includes not only a case in which it is directly connected, but also a case in which it is electrically connected with another element interposed therebetween. In addition, when it is said that a part includes a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise stated.

In this specification, terms such as first, second, third, etc. may be used to describe various components, but these components are not limited by the terms. The above terms are used for the purpose of distinguishing one component from other components. For example, without departing from the scope of the present invention, a first component may be referred to as a second or third component, and similarly, the second or third component may be alternately named.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

1 is a block diagram of a lamination apparatus for a display device according to an embodiment of the present invention.

1 , a lamination apparatus for a display device according to an embodiment of the present invention includes a first unwinding unit 101 , a peeling roller 537 , a first guide roller 301 , and a second guide roller 302 . ), the first winding part 111 , the second winding part 201 , the third guide roller 303 , the fourth guide roller 304 , the joint part 511 , the fifth guide roller 305 , the third volume It includes an outlet 301 and a second winding unit 211 .

The first unwinding unit 101 unwinds the first display film 11 . The first display film 11 is wound around the first unwinding unit 101 in the form of a roll. For example, the first unwinding unit 101 has a cylindrical shape, and the first display film 11 is wound along the outer peripheral surface of the first unwinding unit 101 . The first display film 11 includes a first protective film 11a, a first adhesive 11b on the first protective film 11a, a polarizing plate 11c on the first adhesive 11b, and a first adhesive on the polarizing plate 11c. The second pressure-sensitive adhesive 11d may include a second protective film 11e on the second pressure-sensitive adhesive 11d. Here, a plurality of polarizing plates 11c may be provided, and in this case, the plurality of polarizing plates 11c have a separate sheet shape. Similarly, each of the first adhesive 11b and the second adhesive 11d may be provided in plurality and may have a sheet shape. The first unwinding unit 111 may rotate by itself by receiving a driving force from the outside.

The peeling roller 537 is located on the downstream side of the first unwinding portion 101 . The peeling roller 537 changes the conveyance direction of the 1st protective film 11a with respect to the conveyance direction of the 1st display film 11. As shown in FIG. The peeling roller 537 separates the first protective film 11a from the first display film 11 by winding the first protective film 11a at an acute angle. The first display film 11 from which the first protective film 11a has been removed by passing through the peeling roller 537 is provided to the first guide roller 302 . In addition, the first protective film 11a is provided as the second guide roller 302 .

The first guide roller 301 is located downstream of the peeling roller 537 . The first guide roller 301 changes the conveying direction of the first display film 11 from which the first protective film 11a is removed, provided from the peeling roller 537 , and provides it to the bonding portion 511 . The first guide roller 301 is a rotatable roller, but is a non-driven roller to which power that can rotate by itself is not applied. The first guide roller 301 may have a soft material such as rubber or a hard material such as metal.

The second guide roller 302 is located on the other downstream side of the peeling roller 537 . The second guide roller 302 changes the conveying direction of the first protective film 11a provided from the peeling roller 537 and provides it to the first winding portion 111 . The second guide roller 302 is a non-driven roller. The second guide roller 302 may have a soft material such as rubber or a hard material such as metal.

The first winding portion 111 is located downstream of the second guide roller 302 . The first winding unit 111 passes through the second guide roller 302 to rewind the first protective film 11a separated from the first display film 11 . The first winding portion 111 has a cylindrical shape, and the first protective film 11a is wound along the outer circumferential surface of the first winding portion 111 . The first winding unit 111 may rotate by itself by receiving a driving force from the outside.

The first winding unit 101 and the first winding unit 111 are driven in synchronization with each other. Accordingly, when the first unwinding unit 101 unwinds the first display film 11 , the first winding unit 111 separates the first protective film 11a from the first display film 11 through a peeling roller. ) is wound. The first unwinding unit 101 may rotate by itself by receiving a driving force from the outside.

The second unwinding unit 201 unwinds the second display film 12 . The second display film 12 is wound around the second unwinding unit 201 in the form of a roll. For example, the second unwinding unit 201 has a cylindrical shape, and the second display film 12 is wound along the outer peripheral surface of the second unwinding unit 201 . The second display film 12 includes a carrier 12a and a touch screen panel 12b positioned on the carrier 12a. Here, a plurality of touch screen panels 12b may be provided, and in this case, the plurality of touch screen panels 12b are positioned on one carrier 12a in the form of separate sheets, respectively. The touch screen panel 12b may be attached to the carrier 12a. The second unwinding unit 201 may rotate itself by receiving a driving force from the outside.

The third guide roller 303 is located on the downstream side of the second unwinding part 201 . The third guide roller 303 changes the conveying direction of the second display film 12 provided from the second unwinding unit 201 to provide it to the fourth guide roller 304 . The third guide roller 303 is a non-driven roller. The third guide roller 303 may have a soft material such as rubber or a hard material such as metal.

The fourth guide roller 304 is located downstream of the third guide roller 303 . The fourth guide roller 304 changes the conveying direction of the second display film 12 provided from the third guide roller 303 to provide it to the bonding portion 511 . The fourth guide roller 304 is a non-driven roller. The fourth guide roller 304 may be made of a soft material such as rubber or a hard material such as metal.

The abutment portion 511 is located on the downstream side of the first guide roller 301 and the fourth guide roller 304 . The bonding part 511 bonds the first display film 11 provided through the first guide roller 301 and the second display film 12 provided through the fourth guide roller 304 . The second adhesive 11d of the first display film 11 and the touch screen panel 12b of the second display film 12 are bonded to each other by the bonding portion 511 . The bonding portion 511 includes a first bonding roller 51a and a second bonding roller 51b positioned to face each other. The central axis of the 1st bonding roller 51a and the central axis of the 2nd bonding roller 51b are parallel. The 1st bonding roller 51a and the 2nd bonding roller 51b rotate in mutually opposite directions. At least one of the first bonding roller 51a and the second bonding roller 51b is a driving roller that can rotate itself by receiving a driving force from the outside. The first bonding roller 51a and the second bonding roller 51b may have a soft material such as rubber or a hard material such as metal. The first bonding roller 51a and the second bonding roller 51b may each include a heater therein. Meanwhile, the heater may be located outside the first bonding roller 51a and the second bonding roller 51b. The first bonding roller 51a and the second bonding roller 51b may be nip rollers.

The first display film 11 and the second display film 12 bonded by the bonding part 511 are provided as a fifth guide roller 305 . Here, the bonded first display film 11 and the second display film 12 are defined as a third display film 13 .

The fifth guide roller 305 is located on the downstream side of the abutment 511 . The fifth guide roller 305 changes the conveying direction of the third display film 13 provided from the bonding unit 511 to provide it to the second winding unit 211 . The fifth guide roller 305 is a non-driven roller. The fifth guide roller 305 may have a soft material such as rubber or a hard material such as metal.

The third unwinding unit 301 unwinds the buffer film 14 . The buffer film 14 is wound around the third unwinding unit 301 in the form of a roll. For example, the third unwinding portion 301 has a cylindrical shape, and the buffer film 14 is wound along the outer peripheral surface of the third unwinding portion 301 . The buffer film 14 may be made of any one of rubber, resin, and paper. The third unwinding unit 301 may rotate by itself by receiving a driving force from the outside.

The second winding part 211 is located downstream of the fifth guide roller 305 and the third winding part 301 . The second winding unit 211 receives the third display film 13 through the second guide roller 302 and receives the buffer film 14 from the third winding unit 301 . The second winding unit 211 winds up the third display film 13 and the buffer film 14 so that the third display film 13 and the buffer film 14 overlap each other. For example, the third display film 13 and the buffer film 14 are wound around the second winding unit 211 in an overlapping state. The second winding unit 211 may rotate by itself by receiving a driving force from the outside.

FIG. 2 is a cross-sectional view taken along line I-I` of FIG. 1 .

Looking at the cross-sections of the third display film 13 and the buffer film 14 wound around the second winding unit 211 , as shown in FIG. 2 , the buffer film 14 is disposed between adjacent third display films 13 . ) is located. Accordingly, when the third display film 13 is wound around the second winding unit 211 , the contact area between the third display films 13 positioned adjacent to each other in the upper and lower directions is minimized, thereby preventing damage to the third display film 13 . can be

FIG. 3 is a view of the second winding unit 211 of FIG. 1 as viewed from the arrow direction of FIG. 1 .

3 , the third display film 13 may have a different area from the buffer film 14 . For example, the buffer film 14 may have a smaller area than the third display film 13 . Although not shown, the buffer film 14 and the third display film 13 may have the same area. When the buffer film 14 and the third display film 13 have the same area, the buffer film 14 may completely overlap the third display film 13 .

FIG. 4 is another view as viewed from the arrow direction of FIG. 1 of the second winding unit 211 of FIG. 1 .

4 , the buffer film 14 may overlap the edge of the third display film 13 . For example, the buffer film 14 may include a first buffer part 14a overlapping one edge of the third display film 13 and a second buffer part 14a overlapping the other edge of the third display film 13 . 14b).

FIG. 5 is another view of the second winding unit 211 of FIG. 1 as viewed from the arrow direction of FIG. 1 .

5 , the buffer film 14 may overlap both edges and the center of the third display film 13 . For example, the buffer film 14 includes the first buffer part 14a overlapping one edge of the third display film 13 and the other side of the third display film 13 to face the first buffer part 14a. A second buffer portion 14b overlaps the edges, and a third buffer portion 14c overlaps the central portion of the third display film 13 positioned between the first buffer portion 14a and the second buffer portion 14b. may include

FIG. 6 is another view as viewed from the arrow direction of FIG. 1 of the second winding unit 211 of FIG. 1 .

As shown in FIG. 6 , when the third display film 13 further includes a circuit board 145 connected to the touch screen panel 12b , the buffer film 14 does not overlap the circuit board 145 . does not For example, when the circuit board 145 is connected to the edge of the touch screen panel 12b corresponding to the edge of the third display film 13 , the buffer film 14 is the third display film 13 . Do not overlap edges.

FIG. 7 is another view of the second winding unit 211 of FIG. 1 as viewed from the arrow direction of FIG. 1 , and FIG. 8 shows the stacked state of the third display film 13 and the buffer film 14 of FIG. 7 . A cross-sectional view is shown.

As shown in FIG. 7 , when the third display film 13 further includes a circuit board 145 connected to the touch screen panel 12b , the buffer film 14 does not overlap the circuit board 145 . does not To this end, the buffer film 14 may have a concave-convex shape in a portion corresponding to the circuit board 145 . At this time, as shown in FIG. 8 , the circuit board 145 is located in the main portion of the buffer film 14 .

FIG. 9 is another view of the second winding unit 211 of FIG. 1 as viewed from the arrow direction of FIG. 1 .

As shown in FIG. 9 , when the third display film 13 further includes a circuit board 145 connected to the touch screen panel 12b , the buffer film 14 does not overlap the circuit board 145 . does not To this end, the first buffer portion 14a and the second buffer portion 14b of the buffer film 14 do not overlap the circuit board 145 .

Meanwhile, damage to the third display film 13 may be prevented by using the buffer projection instead of the buffer film 14 . This will be described with reference to FIG. 10 .

10 is a plan view of the third display film 13 including a buffer protrusion, and FIG. 11 is a cross-sectional view of the third display film 13 wound around the second winding unit 211 of FIG. 10 .

10 and 11 , the buffer protrusion 900 is positioned on the edge of the third display film 13 . The buffer protrusion 900 protrudes from the third display film 13 to a predetermined height. Accordingly, when the third display film 13 is wound around the second winding unit 211 , the contact area between the third display films 13 positioned adjacent to the top and bottom is reduced to prevent damage to the third display film 13 . can

12 is another plan view of the third display film 13 including the buffer protrusion 900 .

12 , when the third display film 13 further includes a circuit board 145 connected to the touch screen panel 12b , the buffer projection 900 does not overlap the circuit board 145 . does not For example, the buffer protrusion 900 may be positioned on a portion of the third display film 13 between adjacent circuit boards 145 .

13 is a view for explaining a method of forming the buffer protrusion 900 on the third display film 13 .

As shown in FIG. 13 , the lamination apparatus for a display device according to the present invention may further include a protrusion forming part 133 , wherein the protrusion forming part 133 includes the fifth guide roller 305 and the second protrusion forming part 133 . It may be located between the two windings 211 . Meanwhile, when the protrusion forming part 133 as shown in FIG. 13 is further included in the structure of FIG. 1 , the third unwinding part 301 may be removed from the structure.

The protrusion forming part 133 receives the third display film 13 through the fifth guide roller 305 to form the buffer protrusion 900 on the third display film 13 . The protrusion forming part 133 includes a first processing roller 133a and a second processing roller 133b positioned to face each other. The central axis of the first processing roller 133a and the central axis of the second processing roller 133b are parallel. The first processing roller 133a and the second processing roller 133b rotate in opposite directions. In this case, a portion of the second processing roller may have an uneven shape. As another example, a vacuum suction hole may be located in the second processing roller. The vacuum suction hole may be connected to a vacuum pump provided inside the second processing roller. The above-described buffer protrusion 900 may be formed on a portion of the third display film 13 in contact with the vacuum suction hole. At least one of the first processing roller 133a and the second processing roller 133b is a driving roller that can rotate by itself by receiving a driving force from the outside.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the technical field to which the present invention pertains that various substitutions, modifications, and changes are possible without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of

13: 3rd display film 14: buffer film
12a: carrier 12b: touch screen panel
11b: first adhesive 11c: polarizing plate
11d: second adhesive 11e: second protective film

Claims (17)

a display film unwinding unit for unwinding a display film including a display material;
a buffer film unwinding unit for unwinding the buffer film; and
and a winding part for winding the display film and the buffer film so that the display film from the display film unwinding part and the buffer film from the buffer film unwinding part overlap each other,
The size of the buffer film in the axial direction of the winding portion is smaller than the size of the display film lamination device for a display device. delete The method of claim 1,
The buffer film is a lamination device for a display device overlapping edges of the display film. The method of claim 1,
The buffer film is a lamination device for a display device overlapping a central portion of the display film. The method of claim 1,
The buffer film is a lamination device for a display device overlapping both edges and the center of the display film. 6. The method of claim 5,
The buffer film,
a first buffer overlapping one edge of the display film;
a second buffer part overlapping the other edge of the display film to face the first buffer part; and
and a third buffer overlapping a central portion of the display film positioned between the first buffering part and the second buffering part. The method of claim 1,
and the display film further includes a circuit board connected to a display material of the display film. 8. The method of claim 7,
The buffer film is a lamination device for a display device that does not overlap the circuit board. The method of claim 1,
The buffer film is a lamination device for a display device made of any one of rubber, resin, and paper. an unwinding unit for unwinding a display film including a display material;
a protrusion forming unit receiving the display film from the unwinding unit and forming buffer protrusions only on both edges of the display film; and
and a winding part for winding the display film from the protrusion forming part. 11. The method of claim 10,
The buffer projection does not overlap the display material lamination device for a display device. delete 11. The method of claim 10,
and the display film further includes a circuit board connected to a display material of the display film. 14. The method of claim 13,
The buffer projection does not overlap the circuit board lamination device for a display device. delete The method of claim 1,
A width of the buffer film is smaller than a width of the display film,
The width of the buffer film is the size of the buffer film in a direction perpendicular to the direction in which the buffer film is unwound from the buffer film unwinding unit,
A width of the display film is a size of the display film in a direction perpendicular to a direction in which the display film is unwound from the display film unwinding unit. 11. The method of claim 10,
and the protrusion forming part includes a vacuum suction hole for forming the protrusion.

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