KR102418606B1 - Window reworking system and method of reworking window - Google Patents

Abstract

How to rework the window stuck to the display part is as follows. A cutout pattern is formed on the display part adhered to the window by an adhesive layer. After that, a cleaning solution is provided to the adhesive layer through the incision pattern to inflate the adhesive layer. After that, the inflated adhesive layer is removed to separate the display component from the window.

Description

Window rework system and method to rework windows

The present invention relates to a method for reworking a window and a system for reworking a window, and more particularly, to a method for reworking a window for a display and a system for reworking a window for a display.

Display devices having various shapes and functions applied to portable devices such as smart phones and tablet computers have been developed. In particular, unlike conventional display devices, display devices of various shapes have recently been developed, for example, a curved display device, a bent display device, and a bendable display device. , display devices such as a foldable display, a stretchable display, and a rollable display are being developed.

Each of these display devices may include a display panel and a window, and the display panel may include pixels implemented on a flexible substrate to have flexible characteristics. The window covers the display panel to protect the display panel from external impact and stress. The window is processed to have a shape corresponding to various shapes of the display panel, and accordingly, the window among unit parts of the display device may be a relatively expensive part. Accordingly, when the display device is defective during the manufacturing process of the display device, it may be necessary to rework the window in the display device.

An object of the present invention is to provide a window rework method that is easier and can improve the window rework efficiency.

Another object of the present invention is to provide a window rework system that is easier and has improved window rework efficiency.

A method of reworking a window adhered to a display component in order to achieve one object of the present invention is as follows.

A cutout pattern is formed on the display part adhered to the window by an adhesive layer. After that, a cleaning solution is provided to the adhesive layer through the incision pattern to inflate the adhesive layer. After that, the inflated adhesive layer is removed to separate the display component from the window.

In order to achieve another object of the present invention, a system for reworking a window adhered to a display component includes a scribing unit and a cleaning unit. The scribing unit forms a cutout pattern on the display part adhered to the window by an adhesive layer. The cleaning unit cleans the display part on which the cutout pattern is formed with a cleaning solution.

According to an embodiment of the present invention, even if the display device to be reworked has a bent shape, it is possible to easily reproduce display parts from the display device.

In addition, according to an embodiment of the present invention, before cleaning the display device to be reworked, a path through which the cleaning solution penetrates may be defined by forming an incision pattern on the display device. Accordingly, when the rework is performed on the display device, a target to be removed by the cleaning solution can be easily set.

1 is a block diagram schematically showing a window rework system 500 according to an embodiment of the present invention.
2A, 2B, and 2C are diagrams schematically illustrating processes in which a window is reproduced from a display device according to an embodiment of the present invention.
3 is a schematic exploded perspective view of the rework object 80B shown in FIG. 2B .
4A, 4B, 5 and 6 are views illustrating methods of forming a cutout pattern on a rework object using a scribing unit of a rework system.
7 is a plan view of a rework object on which incision patterns are formed according to another embodiment of the present invention.
FIG. 8 is a view illustrating a method of cleaning a rework object using the cleaning unit, the heating unit, and the ultrasonic wave generating unit shown in FIG. 1 .
9A, 9B, and 9C are views illustrating a process in which a window is regenerated from a rework object immersed in a cleaning solution.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Objects, features, and effects of the present invention described above will be easily understood through the embodiments associated with the drawings. However, the present invention is not limited to the embodiments described herein, and may be applied and modified in various forms. Rather, the embodiments of the present invention to be described later clarify the technical idea disclosed by the present invention, and furthermore, it is provided so that the technical idea of the present invention can be sufficiently conveyed to those skilled in the art with average knowledge in the field to which the present invention belongs. Accordingly, the scope of the present invention should not be construed as being limited by the embodiments to be described later. On the other hand, the same reference numbers in the following examples and drawings indicate the same components.

1 is a block diagram schematically showing a window rework system 500 according to an embodiment of the present invention.

Referring to FIG. 1 , the window rework system 500 is used to reproduce the window by removing the remaining display parts except for the window from the display device. In this embodiment, in the rework object (100B in FIG. 3B) including the touch panel assembly (TA in FIG. 3B) adhered to the window (WD in FIG. 3B) with the adhesive layer (35 in FIG. 3B) interposed therebetween , the window rework system 500 may be used to reproduce the window by removing the touch panel assembly from the rework object.

In this embodiment, the window rework system 500 includes a scribing unit 100 , a cleaning unit 200 , a heating unit 300 , and an ultrasonic wave generating unit 400 . A schematic structure and function of the window rework system 500 will be described with reference to FIG. 1 , and a more detailed structure and function of the window rework system 500 will be described with reference to FIGS. 4 to 7 .

The scribing unit 100 includes a plurality of cutting edges (BD of FIG. 4B ) to form a plurality of cutout patterns (PF of FIG. 5 ) on the display part of the display device. In this embodiment, the display device may be an organic light emitting display device, and the display component may be the touch panel attached to the window. In this case, the plurality of cutting edges of the scribing unit 100 may press the touch panel to form the plurality of cutout patterns on the touch panel.

The cleaning unit 200 includes a container (CN in FIG. 8) and a cleaning solution (SL in FIG. 8) accommodated in the container, and the display device on which the plurality of incision patterns are formed is immersed in the cleaning solution, and the plurality of The cleaning solution may easily penetrate into the display device through the incision patterns. In addition, by controlling the depth of each of the incision patterns, a path through which the cleaning solution penetrates into the interior of the display device can be easily set, and accordingly, the target to which the cleaning solution is provided from the display device can be easily set can be set.

The heating unit 300 heats the cleaning liquid. In this embodiment, the heating unit 300 may be a hot plate in contact with the container of the cleaning unit 200, and the heating unit 300 includes a built-in coil and is provided to the outside. The power source can generate heat.

The ultrasonic wave generating unit 400 generates ultrasonic waves in the cleaning solution. In this embodiment, the ultrasonic wave generating unit 400 may be coupled to the container of the cleaning unit 200, and the ultrasonic wave generating unit 400 generates ultrasonic waves in a frequency range of about several kHz to about several hundreds of kHz. can do it

2A, 2B, and 2C are diagrams schematically illustrating processes in which the window WD is reproduced from the display device 80A according to an embodiment of the present invention. In addition, FIG. 3 is a schematic exploded perspective view of the rework object 80B shown in FIG. 2B .

2A and 3 , in this embodiment, the display device 80A may be an organic light emitting display device 80A, and the organic light emitting display device 80A includes a window WD and a touch panel assembly TA. and a display panel assembly DP.

In this embodiment, both ends of the window WD are bent, so that the window WD has a flat cover part FP, a first bending part BP-1, and a second bending part BP-2. can be defined. The flat cover part FP has a flat shape, and the flat cover part FP covers a flat portion of the display panel assembly DP. Also, the first and second bending portions BP-1 and BP-2 cover bent portions of the display panel assembly DP.

In this embodiment, the window WD includes glass GS, a coating layer 60 , an adhesive layer 55 , a base film 50 , and a printing layer 40 .

The glass GS has a property of transmitting light to form the body of the window WD. The glass GS has a bent shape to correspond to the shapes of the first and second bending parts BP-1 and BP-2 defined in the window WD.

The coating layer 60 coats the glass GS to improve the hardness of the glass GS. In this embodiment, the coating layer 60 may include an organic material, an inorganic material, or a hybrid material in which an organic material and an inorganic material are mixed. For example, the organic material may include an acrylic compound and an epoxy compound, and the inorganic material may include silica and alumina. In another embodiment, the coating layer 60 is alternately repeated with a first layer including any one of the above-described materials and a second layer laminated on the first layer and including another one of the above-described materials. It may have a multi-layered structure implemented.

The base film 50 is adhered to the glass GS by the adhesive layer 55 , and a printing layer 40 is printed on the base film 50 . In this embodiment, the printed layer 40 may overlap the edge of the window WD, and the printed layer 40 includes a light-blocking material to light output from the display panel assembly DP. to block Accordingly, a light blocking area of the window WD is defined corresponding to a position where the printed layer 40 is disposed, and a light transmitting area of the window WD is defined corresponding to an area where the printed layer 40 is not disposed. can be defined.

In this embodiment, the display panel assembly DP may include a display panel 10 , a polarizing plate 20 , and an adhesive layer 25 .

The display panel 10 displays an image. In this embodiment, the display panel 10 may have a flexible characteristic. For example, the display panel 10 may be an organic light emitting display panel, and the display panel 10 includes a base substrate having flexible characteristics and pixels disposed on the base substrate, each including an organic light emitting diode. may include

In this embodiment, the display panel 10 has a bent shape to correspond to the bent shape of the window WD. In more detail, the display panel 10 includes a flat display unit FD, a first curved display unit CDP11 and a second curved display unit CDP12.

Accordingly, when the display panel 10 is coupled to the window WD, the first curved display part CDP11 is covered by the first bending part BP-1, and the second curved display part CDP12 is covered by the first bending part BP-1. is covered by the second bending part BP-2, and the flat display part FD is covered by the flat cover part FP.

The polarizing plate 20 includes a polarizing film to polarize the light output from the display panel 10 . In this embodiment, the polarizing plate 20 may include an adhesive layer adhered to the display panel 10 , and the polarizing plate 20 is connected to the display panel 10 by the adhesive layer of the polarizing plate 20 . ) can be adhered to.

The adhesive layer 25 includes an adhesive resin having light transmittance. For example, the adhesive layer 25 may be an optical clear adhesive (OCA). The adhesive layer 25 is disposed between the touch panel TSP and the polarizing plate 20 to adhere the touch panel assembly TA to the display panel assembly DP.

The touch panel assembly TA is disposed between the window WD and the display panel assembly DP, and the touch panel assembly TA includes a touch panel TSP and an adhesive layer 35 .

The touch panel TSP receives a touch signal generated on the window WD. The touch signal is generated when a user applies pressure to the window WD, and the touch panel TSP converts the touch signal into an electrical signal and provides it to the display panel assembly DP.

The adhesive layer 35 includes an adhesive resin having light transmittance, and for example, the adhesive layer 35 may be an optical clear adhesive (OCA). The adhesive layer 35 is disposed between the touch panel TSP and the window WD to adhere the touch panel assembly TA to the window WD.

Referring to FIG. 2B , the display panel assembly DP is removed from the display device ( 80A of FIG. 3A ) described with reference to FIG. 3A . In this embodiment, the display panel assembly DP may be removed from the display device in various ways. For example, by immersing the display device in liquid nitrogen at a temperature of about -60°C to about -90°C, the volume of the adhesive layer 25 interposed between the touch panel TSP and the polarizing plate 20 may be reduced. . As a result, the adhesive force of the adhesive layer 25 to each of the touch panel TSP and the polarizing plate 20 is weakened, so that the display panel assembly DP can be removed from the display device 80A.

As described above, when the display panel assembly DP is removed from the display device 80A, the rework object 80B that can be applied to the window rework system (500 of FIG. 1 ) described with reference to FIG. 1 . This is implemented.

2B and 2C, when the rework object 80B is put into the window rework system (500 in FIG. 1), the touch panel assembly TA from the rework object 80B by the window rework system ) is removed, and as a result, the rework object 80B is reproduced as the window WD by the window rework system. Accordingly, the window WD may be assembled with another touch panel assembly and another display panel assembly to be reused as a display component of another display device.

Hereinafter, a method of reworking the rework object 80B with the window WD using the window rework system will be described as follows.

4A, 4B, 5 and 6 are views illustrating methods of forming a cutout pattern on a rework object by using the scribing unit 100 of the rework system. In more detail, each of FIGS. 4A and 4B is a cross-sectional view of a rework object 80B scribed by the scribing unit 100, and FIG. 5 is a cutout pattern ( PF)) is a cross-sectional view of the rework object 80B formed, and FIG. 6 is a plan view of the rework object 80B on which the cutout pattern PF is formed.

4A, 4B and 5 , the rework object 80B is scribed using the scribing unit 100 of the window rework system (500 in FIG. 1 ).

In this embodiment, the scribing unit 100 may include a rotation driving unit RD, a rotation shaft RA, a linear driving unit SD, and a plurality of cutting edges BD.

The rotation driving unit RD receives power from the outside like a motor to generate rotational force. The rotation shaft RA is coupled to the rotation driving unit RD and the plurality of cutting edges BD, and accordingly, the rotational force generated from the rotation driving unit RD is applied to the plurality of cutting edges through the rotation shaft RA. It can be delivered to the blades BD side.

The linear driving unit SD is coupled to the rotation driving unit RD to move the rotation driving unit RD in a first direction D1, a direction opposite to the first direction D1, and perpendicular to the first direction D1. moving in the second direction D2 and in a direction opposite to the second direction D2. In this embodiment, the linear driving unit SD may be driven by various linear driving methods such as a piston and cylinder method, a chain method, and a belt method.

In this embodiment, the plurality of cutting edges BD may include a first cutting edge BD1 and a second cutting edge BD2 . Each of the first and second cutting edges BD1 and BD2 may be connected to the rotation shaft RA to receive the rotational force from the rotation driving unit RD.

The first and second cutting edges BD1 and BD2 are spaced apart from each other and arranged in a third direction D3 perpendicular to a vertical direction defined by the first and second directions D1 and D2. In this embodiment, the first cutting edge BD1 is positioned to overlap the flat cover part FP of the window WD, and the second cutting edge BD2 is a first bending part of the window WD. It can be positioned to overlap with (BP1).

In a state in which the plurality of cutting edges BD are rotated by the rotation driving unit RD, the plurality of cutting edges BD are moved in the first direction D1 by the driving of the linear driving unit SD. On the other hand, the plurality of cutting edges BD selectively press the touch panel TSP and the adhesive layer 35 among the components of the rework object 80B. After that, when the plurality of cutting edges BD are moved in the second direction D2 by the driving of the linear driving unit SD, the rework object 80B moves in the second direction D2. A cutout pattern PF is formed.

In more detail, the first cutting edge BD1 presses a portion of each of the touch panel TSP and the adhesive layer 35 corresponding to the position of the flat cover part FP to form a first cutting pattern. (PF1) is formed. In addition, the second cutting edge BD2 is a different portion of each of the touch panel TSP and the adhesive layer 35 corresponding to the positions of the first and second bending parts BP-1 and BP-2. The second cut-out pattern PF2 may be formed by pressing , and the second cut-out pattern PF2 may be formed simultaneously with the first cut-out pattern PF1.

In this embodiment, each of the first and second cut-out patterns PF1 and PF2 is formed through the touch panel TSP, and is formed by each of the first and second cut-out patterns PF1 and PF2. A portion of the adhesive layer 35 may be cut. That is, the depth of each of the first and second cutout patterns PF1 and PF2 may be defined in a direction from the surface exposed to the outside of the touch panel TSP toward the adhesive layer 35 , A depth of each of the first and second cutout patterns PF1 and PF2 may be formed to be greater than a thickness of the touch panel TSP. In more detail, when the depth DT of the first cutout pattern PF1 , the first thickness T1 of the touch panel TSP, and the second thickness T2 of the adhesive layer 35 are defined , the depth DT is greater than the first thickness T1 , and the depth DT is less than the sum of the first and second thicknesses T1 and T2 .

As described above, when the first and second cut-out patterns PF1 and PF2 are formed, a portion of the adhesive layer 35 may be exposed to the outside. Accordingly, a cleaning solution (SL of FIG. 8 ), which will be described later, may easily penetrate toward the adhesive layer 35 through the first and second cutout patterns PF1 and PF2 .

In this embodiment, the edge portions of the first and second cutting edges BD1 and BD2 may have different shapes. More specifically, the first cutting edge BD1 has a first edge portion BS1 , the second cutting edge BD2 has a second edge portion BS2 , and the second edge portion in cross section BS2 may be inclined along a direction in which the first bending part BP1 is bent to be inclined with respect to the second edge part BS2.

Accordingly, the first bottom surface PS1 of the first cut-out pattern PF1 has a flat shape corresponding to the shape of the first edge part BS1, and the second bottom surface of the second cut-out pattern PF2 has a flat shape. The surface PS2 has a shape inclined with respect to the first bottom surface PS1 to correspond to the shape of the second edge part BS2 . Unlike the embodiment of the present invention, when the second bottom surface PS2 has a flat shape like the first bottom surface PS1, the bent shape of the first bending part BP-1 is Accordingly, the second cut-out pattern PF2 may penetrate the adhesive layer 35 . However, in this embodiment, since the second bottom surface PS2 has an inclined shape along the bent shape of the first bending part BP-1, the second cut-out pattern PF2 Penetration of the adhesive layer 35 may be prevented.

Referring to FIG. 6 , in this embodiment, each of the plurality of cut-out patterns PF has a linear shape in the second direction D2 on the plane, and the plurality of cut-out patterns PF have a shape in the third direction D3. ) can be arranged at intervals.

In addition, the first cutout pattern PF1 of the plurality of cutout patterns PF is positioned to correspond to the position of the flat cover part FP of the rework object 80B, and the first cutout pattern PF1 of the plurality of cutout patterns PF is The second cutout pattern PF2 is positioned to correspond to the positions of the first bending part BP-1 and the second bending part BP-2 of the rework object 80B.

As described above, in this embodiment, each of the plurality of cut-out patterns PF may be formed to have a continuous shape in one direction, but the plurality of cut-out patterns PF may have other shapes. This will be described with reference to FIG. 7 as follows.

7 is a plan view of a rework object 80B-1 on which cutout patterns PF-1 are formed according to another embodiment of the present invention.

Referring to FIG. 7 , in this embodiment, the cutout patterns PF-1 on a plane may have a linear shape defined in two directions. In more detail, the cutout patterns PF-1 include first cutout patterns PF11 and second cutout patterns PF12 crossing the first cutout patterns PF11 on a plane, Each of the first cut-out patterns PF11 extends in a second direction D2 , and each of the second cut-out patterns PF12 extends in a third direction D3 . In addition, the first cut-out patterns PF11 are spaced apart in the third direction D3 , and the second cut-out patterns PF12 are spaced apart in the second direction D2 .

Comparing the embodiments shown in FIGS. 6 and 7 , in the embodiment shown in FIG. 6 , each of the cutout patterns (PF of FIG. 6 ) is defined in one direction, but in the embodiment shown in FIG. 7 , the cutout The patterns PF - 1 are defined in two directions. Accordingly, when the number of the cutout patterns PF-1 is the same as the number of the cutout patterns PF of FIG. 6 , the pitch of the cutout patterns PF-1 is greater than the pitch of the cutout patterns. can

Also, in this embodiment, each of the cutout patterns PF-1 may have a discontinuous shape. As in the embodiment described above with reference to FIG. 6 , in this embodiment, the cleaning liquid (SL in FIG. 9A ) can easily flow into the inside of the rework object 80B-1 through the cutout patterns PF-1. can penetrate.

FIG. 8 is a diagram illustrating a method of cleaning the rework object 80B using the cleaning unit 200 , the heating unit 300 , and the ultrasonic wave generating unit 400 shown in FIG. 1 .

Referring to FIG. 8 , the cleaning unit 200 includes a container CN and a cleaning solution SL accommodated in the container CN. In this embodiment, the cleaning solution SL may include limonene, and more specifically, the cleaning solution SL includes limonene, isopropyl alcohol (IPA), alkyl lactate ( alkyl lactate), alkyl siloxane and glycol ether.

The heating unit 300 heats the cleaning liquid SL. In this embodiment, the heating unit 300 may be a hot plate in contact with the bottom of the cleaning unit 200, and the heating unit 300 is provided to the outside including a built-in coil. The power source can generate heat. In this embodiment, when the cleaning unit 200 cleans the rework object 80B, the heating unit 300 heats and maintains the temperature of the cleaning liquid at about 50° C. to about 70° C. have.

The ultrasonic wave generating unit 400 generates ultrasonic waves in the cleaning liquid SL. In this embodiment, the ultrasonic generating unit 400 is spaced apart from the heating unit 300 is coupled to the vessel (CN). In this embodiment, when the cleaning unit 200 cleans the rework object 80B, the ultrasonic wave generating unit 400 may generate ultrasonic waves in a frequency range of about 20 kHz to about 50 kHz.

9A, 9B and 9C are views illustrating a process in which the window WD is regenerated from the rework object 80B immersed in the cleaning solution SL.

9A and 9B, when the rework object 80B on which the first and second incision patterns PF1 and PF2 are formed is immersed in the cleaning solution SL and exposed to the cleaning solution SL, the cleaning solution ( SL) to the first and second cut-out patterns PF1 and PF2. As a result, the cleaning solution SL may contact the adhesive layer 35 through the first and second cutout patterns PF1 and PF2 .

Thereafter, the molecules of the cleaning solution SL flow into the adhesive layer 35 through the first and second incision patterns PF1 and PF2 , and the adhesive layer 35 swells. In more detail, a permeation path FR may be defined at a portion in which the molecules of the cleaning solution SL and the adhesive layer 35 come into contact, and the molecules of the cleaning solution SL are separated by the permeation path FR. ) may penetrate into the adhesive layer 35 along the

As a result, the cleaning solution SL permeates into the polymer network of the adhesive layer 35 , and the volume of the adhesive layer 35 increases. Accordingly, the adhesive force of the adhesive layer 35 to each of the touch panel TSP and the window WD is weakened.

In addition, in a state in which the rework object 80B is immersed in the cleaning liquid SL, the cleaning liquid SL is heated by a heating unit (300 in FIG. 8 ), and the ultrasonic wave generating unit ( 400 in FIG. 8 ) When ultrasonic waves are generated in the cleaning liquid SL by the Accordingly, the speed at which the adhesive layer 35 is swelled by the cleaning solution SL may be reduced.

As described above, when the adhesive force of the adhesive layer 35 to each of the touch panel TSP and the window WD is weakened, the touch panel TSP and the window ( WD) can be easily separated. After that, the window WD may be completely regenerated by removing the adhesive layer 35 remaining from the window WD.

Although described with reference to the above embodiments, those skilled in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention described in the scope of the following claims you will understand

Claims (19)

A method of reworking a window adhered to a display component, the method comprising:
forming a cutout pattern on the display part adhered to the window by an adhesive layer;
providing a cleaning solution to the adhesive layer through the incision pattern to swell the adhesive layer; and
removing the inflated adhesive layer to separate the display component from the window;
The step of forming the cutout pattern includes forming by pressing a cutting edge on the display part,
A plurality of the cutting edges are provided to be spaced apart from each other so that a plurality of the cut-out patterns are formed to be spaced apart from each other on the display part, and the plurality of cut-out patterns are simultaneously formed on the display part,
A flat portion and a bending portion bent from the flat portion are defined in the display component, and an edge portion of one cutting edge for cutting the bending portion among the plurality of cutting edges is inclined with respect to an edge portion of another cutting edge for cutting the flat portion Rework method of the window, characterized in that. The method of claim 1 , wherein the cut-out pattern is formed through the display part. The method of claim 2, wherein the depth of the cutout pattern is defined in a direction from one surface of the display part exposed to the cleaning solution toward the adhesive layer. The window of claim 3 , wherein the depth of the cut-out pattern is greater than a thickness of the display component, and the depth of the cut-out pattern is smaller than the sum of the thickness of the component of the display and the thickness of the adhesive layer. of the rework method. The method of claim 1, wherein the step of inflating the adhesive layer by providing the cleaning solution to the adhesive layer comprises:
heating the cleaning solution; and
Rework method of the window, characterized in that it further comprises the step of generating ultrasonic waves in the cleaning solution. delete The method of claim 1, wherein the cut-out pattern is linearly formed. delete delete The method of claim 1, wherein the display component is a touch panel. The method of claim 1, wherein the adhesive layer includes a resin, and the cleaning solution includes limonene. A system for reworking a window adhered to a display component, the system comprising:
a scribing unit for forming a cutout pattern on the display part adhered to the window by an adhesive layer; and
and a cleaning unit for cleaning the display part on which the cutout pattern is formed with a cleaning solution,
The scribing unit,
Forming the cutout pattern by pressing the display component, including a plurality of cutting edges arranged spaced apart from each other,
The cutting edges are
a first cutting edge for cutting a flat part of the display part; and
and a second cutting edge for cutting the bent portion of the display part,
The window rework system, characterized in that the edge portion of the second cutting edge is inclined with respect to the edge portion of the first cutting edge. 13. The method of claim 12, wherein the cleaning unit,
A container for accommodating the cleaning solution,
The window rework system, characterized in that the display part on which the cutout pattern is formed is immersed in the cleaning solution and cleaned 13. The method of claim 12,
Window rework system, characterized in that it further comprises an ultrasonic wave generating unit for generating ultrasonic waves in the cleaning solution. 13. The method of claim 12,
Window rework system, characterized in that it further comprises a heating unit for heating the cleaning liquid accommodated in the cleaning unit. delete The method of claim 12, wherein the scribing unit,
a rotation driving unit coupled to the plurality of cutting edges to rotate the plurality of cutting edges; and
Rework system of the window, characterized in that it further comprises a linear driving unit connected to the plurality of cutting edges to linearly move the plurality of cutting edges. delete 13. The system of claim 12, wherein the cleaning liquid comprises limonene.

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