KR101089174B1 - A scribing apparatus including chip pre-processing unit, and the scribing method - Google Patents

Abstract

The present invention relates to a scribing apparatus and a scribing method including a chip preprocessor, wherein a scribing head, a wheel holder in which vertical rotation (Z-axis rotation) is freely installed on the scribing head, the wheel holder A scribing wheel for horizontal rotation at the bottom of the scribing wheel to form a scribing line on the surface of the glass panel, and relative to the surface of the glass panel in the forward direction of the scribing wheel relative to the glass panel. A scribing apparatus comprising a chip preprocessor for supplying a chip pretreatment, and a scribing method for applying the chip pretreatment in front of the advancing direction of the scribing wheel.
According to the present invention having such a configuration, even if the chip generated during scribing is attached to the glass panel, it can be completely removed from the surface of the glass panel in a subsequent cleaning process, thereby advantageously lowering the defective rate of the glass panel.

Description

Scribing apparatus including chip pre-processing unit, and the scribing method

The present invention relates to a scribing apparatus and a scribing method including a chip preprocessor, and more particularly, a product defect occurs because chips scattered during scribing adhere to the surface of the glass panel and are not separated even after cleaning. A scribing apparatus and scribing method comprising a chip preprocessor for preventing the same.

Generally, LCDs, LEDs, organic EL panels, inorganic EL panels, transmissive projector substrates, and reflective projector substrates used as flat panel display panels are brittle mother glass panels (or “parent substrates”) such as glass. It is obtained by cutting the glass panel) to a predetermined size.

In the cutting process of the glass panel, a scribing line is formed to form a scribing line on the surface of the substrate by using a cutter made of diamond, which has a hardness higher than that of the glass panel, and to allow cracks to propagate along the scribing line. A) through the process.

In general, a scribing line is formed on the surface of the glass panel by a rotating cutter (hereinafter referred to as a `` scribing wheel ''), and fine chips are generated in the process of forming the scribing line. Scattered.

Some of the chips scattered in this way adhere to the scribing line on the surface of the glass panel due to static electricity between the glass panels, heat or high roughness of the glass panel, and subsequent cleaning. It might be stuck without removing even in the process. The cleaning may include water knife cleaning using water, aluminum brush cleaning, belt cleaning, or high pressure air jet cleaning according to a detailed process, and chips adhered to the glass panel may hardly be separated even after such cleaning process.

If the chip remains on the surface of the glass panel after the cleaning process, it is identified by the naked eye or a vision camera in the subsequent process of attaching the polaroid film and classified as a defective product.

 1 (a) to (d) show a configuration in which scattering chips are attached to the glass panel and confirmed to be defective.

First, FIG. 1A shows the glass panel 1 before scribing is performed.

Next, FIG. 1B schematically illustrates a configuration in which chip C is generated while scribing is performed by an actual scribing wheel.

1C shows a state in which the chip C scattered is attached to the surface of the glass panel 1.

Lastly, (d) of FIG. 1 illustrates a state in which a defective product is made by attaching a polarizing film pol while the chip C remains in the glass panel 1.

As a result, the chip (C) generated during scribing is attached to the surface of the glass panel (1), which leads to product defects, resulting in a large waste of materials and a high manufacturing cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to include a chip preprocessor which can be completely removed from the surface of the glass panel in a subsequent cleaning process even if the chip generated during scribing is attached to the glass panel. The present invention provides a scribing apparatus and a scribing method.

In order to achieve the above object, a scribing apparatus including a chip preprocessor according to the present invention,

A scribing head, a wheel holder rotatably installed on the scribing head, and a scribing wheel rotatably coupled to a lower end of the wheel holder to form a scribing line on the surface of the glass panel. In the scribing apparatus,

And a chip preprocessor for supplying a chip pretreatment agent to the surface of the glass panel in front of the advancing direction of the scribing wheel relative to the glass panel.

The chip preprocessor includes a nozzle and a pressure regulating unit for adjusting and applying a pressure to the chip pretreatment agent to inject the chip pretreatment agent through the nozzle.

The pressure regulating unit is characterized in that the regulator or a pressure controller disposed between the nozzle and the chip pretreatment source.

Alternatively, the pressure regulating unit may be a regulator or a pressure controller disposed between the nozzle and the chip pretreatment source and between the nozzle and the air supply, respectively.

The nozzle is characterized in that the virtual line extending from the axis of rotation of the wheel holder is installed to face the point where the glass panel meets.

Alternatively, the nozzle is characterized in that it is disposed to face the upper circumference of the scribing wheel.

Alternatively, four or more nozzles may be disposed along the circumference of the scribing head, and at least four nozzles may be installed before and after the transport direction of the glass panel, respectively, in a direction orthogonal to the transport direction.

The chip pretreatment is characterized in that the liquid surfactant.

The movement of the scribing head and the nozzle in the vertical direction with respect to the surface of the glass panel is performed simultaneously.

Alternatively, the chip preprocessor and the scribing head may be separated and moved separately.

Meanwhile, the scribing method including the chip preprocessor according to the present invention,

A scribing head, a wheel holder rotatably installed on the scribing head, and a scribing wheel rotatably coupled to a lower end of the wheel holder to form a scribing line on the surface of the glass panel. When forming a scribing line using a scribing apparatus, a chip pretreatment agent is sprayed in advance on a portion where a scribing line is to be formed before the scribing line is formed, so that the chip placed on the glass panel is a chip. It is characterized by interposing a pretreatment agent.

In this case, the size of the applied width is adjusted by adjusting the injection pressure of the chip pretreatment agent.

The chip pretreatment agent is sprayed toward the point where the imaginary line extending from the rotation axis of the wheel holder meets the glass panel.

According to the present invention having the above-described configuration, the chip preprocessor is interposed between the glass panel and the generated chip by using the chip preprocessor, even if the chip generated at the time of scribing adheres to the glass panel. Since it can be removed from the surface of the product has an advantage that can significantly lower the defective rate of the product.

1 is a view sequentially showing a phenomenon in which a product defect occurs by a chip fixed to a glass panel in a conventional scribing process.
2 is a view showing a configuration of injecting a chip pretreatment agent before chip generation in accordance with the present invention.
3 is a perspective view illustrating a scribing apparatus including a chip preprocessor according to an embodiment of the present invention.
Figure 4 is a side view of Figure 3;
5 is a configuration diagram showing an example of a pressure regulating unit including the nozzle of FIG. 3.
6 is a configuration diagram showing another example of the pressure control unit including the nozzle of FIG.
FIG. 7 is a side view illustrating an example of a nozzle arrangement structure of FIG. 3. FIG.
8 is a perspective view illustrating a scribing apparatus including a chip preprocessor according to another embodiment of the present invention.
9 is a perspective view of a scribing apparatus including a chip preprocessor according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 to 9.

As shown in (a) and (b) of FIG. 2, the scribing apparatus S according to the present invention includes a scribing head 6 which is free to move up and down in the vertical direction (Z-axis direction). In the scribing head 6, the wheel holder 29 freely provided with Z-axis rotation, the scribing wheel 2 freely provided with horizontal rotation in the wheel holder 29, and the glass panel 1. And a chip preprocessor 10 for supplying or spraying the chip pretreatment in front of the advancing direction of the scribing wheel 2.

The forward direction of the scribing wheel 2 relative to the glass panel 1 does not mean the absolute direction of movement of the scribing wheel 2 but the relative direction of movement of the scribing wheel 2 relative to the glass panel 1. If the glass panel 1 stops and the scribing wheel 2 moves directly, it will be in front of the moving direction of the scribing wheel 2 and the scribing wheel 2 will stop and the glass panel ( If 1) is moved, it will be behind the moving direction of the glass panel.

The vertical direction is a direction perpendicular to the surface of the glass panel 1, and the horizontal direction is a direction parallel to the surface of the glass panel 1.

If the chip pretreatment agent (CPT) is applied to the portion where the scribing line is to be formed prior to the scribing, the chip is generated on the glass panel through the chip pretreatment agent (CPT). Will not stick to it.

In particular, when a solution containing a surfactant or a surfactant mixed with a solvent, such as water, is used as the chip pretreatment agent (CPT), the surface tension is reduced and uniform application is possible without forming droplets. It can be surely prevented from being attached directly to the. Examples of the surfactant that can be used include soapy water and synthetic detergents.

In addition to the surfactant, any liquid may be employed which reduces the surface tension to allow uniform application. However, components that damage the surface of the glass panel 1 should be avoided.

An example of the scribing apparatus S in which the chip preprocessor 10 is installed will be described in detail as follows. Prior to the description, the scribing wheel 2, the wheel holder 29, and the scribing head 6 in the drawings are essential components, but the mutual coupling structure and the coupling structure between the other components are It is known in advance that various decisions can be made.

As shown in FIG. 3 and FIG. 4, the scribing apparatus S which concerns on this invention consists of the base 3 in which the guide rail 8 was formed, and the slidably arrange | positioned at the said guide rail 8; 1 moving block 9 and a moving table 4 fixed to the first moving block 9 to move up and down along the guide rail 8 of the base 3 in the vertical direction (Z axis), and the movement It is provided with the scribing head 6 fixed to the base 4, and lifting up together in a Z-axis direction. At the lower end of the scribing head 6, a wheel holder 29 and a scribing wheel 2 are installed.

The base 3 is coupled to an XY table (not shown) or the like to perform scribing while moving relative horizontally along the surface of the glass panel.

The guide rail 8 and the first moving block 9 constitute a first linear motion guide, and the movable table 4 moves in the Z-axis direction perpendicular to the base 3. To guide.

The first moving block 9 is connected to a Z axis moving mechanism composed of a Z axis motor 13 and a ball screw mechanism (not shown) to move in the Z axis direction.

The base 3 is slidably provided with a scribing head 6 which moves up and down in the Z-axis direction together with the movable table 4. The second moving block 7 is slidably arranged on the guide rail 8. The scribing head 6 is mounted on the second moving block 7. The guide rail 8 and the second moving block 7 have a second linear motion guide and guide the movement of the scribing head 6 in the Z-axis direction with respect to the base 3.

The movable cylinder 4 is provided with a pressure cylinder 41, the rod (rod) is directed in the Z-axis direction. The scribing head 6 is connected to the rod end of the pressurizing cylinder 41.

When scribing is performed according to the above-described configuration, first, the feed screw shaft 14 is rotated by the driving of the Z-axis motor 13, and the first movement is performed according to the rotation of the feed screw shaft 14. The block 9 is lowered so that the scribing wheel 2 contacts the glass panel. When the scribing wheel 2 contacts the glass panel 1, a change in the magnitude of the current flowing through the Z-axis motor 13 is detected and the driving of the Z-axis motor 13 is stopped.

Subsequently, the pressure cylinder 41 is operated to apply pressure to the glass panel 1 while the scribing wheel 2 is in contact with the glass panel.

As a result, the scribing is performed while the external force due to the pressure and the drag force of the glass panel are balanced.

On the other hand, the scribing head 6 is provided with a chip preprocessor 10.

The chip preprocessor 10 includes a nozzle 11 and a pressure regulating unit 12 for adjusting and applying a pressure to the chip pretreatment agent to inject the chip pretreatment agent through the nozzle 11. Both the nozzle 11 and the pressure regulating unit 12 may be installed in the scribing head 6 or only the nozzle 11 may be installed in the scribing head 6.

As shown in FIG. 5, the pressure regulating unit 12 may include a regulator or a pressure controller 12a disposed between the nozzle 11 and the chip pretreatment source 21. This is a seal nozzle type in which the chip pretreatment agent is directly supplied from the chip pretreatment source 21 to the nozzle 11 by the pressure difference.

Alternatively, as shown in FIG. 6, the pressure regulating unit 12 is disposed between the nozzle 11 and the chip pretreatment source 21, and between the nozzle 11 and the air supply 22, respectively. It may be comprised of the regulator 12b or the pressure controller 12c. This is a spray nozzle method in which the chip pretreatment is supplied from the chip pretreatment source 21 by forming low pressure as the air passes, as in the general sprayer.

However, the method of spraying or spraying is not limited to the illustrated example and various known methods may be adopted.

As illustrated in FIG. 7, the nozzle 11 may be installed to face a point where an imaginary line extending from the rotation axis 29a of the wheel holder 29 meets the glass panel 1. This utilizes the structural characteristics of the scribing wheel 2 and the wheel holder 29. When configured in this way, the nozzle 11 always precedes the scribing of the scribing wheel 2. Can spray

As another embodiment, as shown in FIG. 8, four nozzles 11 are arranged along the Z axis of the scribing wheel 2, each of which is arranged before and after the feeding direction of the glass panel 1. It may be installed on the left and right in a direction orthogonal to the conveying direction. If the scribing head 6 is scribed while moving back and forth along the conveying direction of the glass panel 1 or moving in a direction orthogonal to the conveying direction, The chip pretreatment agent may be sprayed prior to the movement of the scribe wheel 2. This is made possible by controlling the chip pretreatment agent to be sprayed from one of the four nozzles facing the moving direction of the scribing wheel 2.

In another embodiment, the nozzle 11 may be disposed to face the upper circumference of the scribing wheel 2. In this configuration, since the chip pretreatment sprayed on the outer circumferential upper end of the scribing wheel 2 by the centrifugal force of the scribing wheel 2 is sprayed in the conveying direction, prior to the movement of the scribing wheel 2. Chip pretreatment may be sprayed.

As another embodiment, as shown in FIG. 9, the nozzle 10 may be installed to be rotatable about the scribing head 6. With this arrangement, whenever the scribing direction of the scribing wheel 2 is changed, the spraying direction of the nozzle 10 can be placed at a position preceding the conveying direction of the scribing wheel 2. To this end, the scribing head 6 may be provided with a rotor 6b driven by a motor (not shown) via a bearing 6a, and a nozzle 11 may be installed in the rotor 6b. The motor receives a signal regarding the rotation angle of the wheel holder 29 or the like by a separate controller (not shown) so that the nozzle 11 is directed toward the forward direction of the scribing wheel 2. The angle of rotation can be adjusted.

On the other hand, it is preferable that the nozzle 10 is connected to the scribing head 6, the moving table 4 or the like so that the Z-axis movement of the chip nozzle 10 and the scribing head 6 are simultaneously performed. . In this configuration, the nozzle 11 can be maintained at the optimum height, thereby avoiding the inconvenience of separately operating.

Although not shown, the nozzle 10 may be installed separately from the scribing head 6 or the moving table 4. In this case, a chip preprocessor support (not shown) having a function similar to a scribing head support (not shown) may be provided to allow the nozzle 10 to move while following the scribing head 6. . However, in this case, the installation cost is high and the structure is somewhat complicated.

Hereinafter, a method of scribing while spraying the chip pretreatment agent will be described.

First, the scribing wheel 2, the wheel holder 29 to which the scribing wheel 2 is rotatably coupled in a horizontal direction, and the wheel holder 29 are vertically rotated (Z-axis rotation). When the scribing line is formed using a scribing apparatus including a scribing head 6 which is freely installed, the chip pretreatment in advance in the portion where the scribing line is to be formed before the scribing line is formed. The injection of the agent causes the chip C placed on the glass panel 1 to interpose the chip pretreatment agent.

In this case, the pressure control unit 12 is used to adjust the injection pressure of the chip pretreatment agent so as to appropriately adjust the size of the coating width of the chip pretreatment agent.

Although the coating width of the said chip pretreatment agent is 1 mm-3 mm, it does not give a big trouble even if it is out of the range. However, it may be desirable to determine the width so that all scattered chips are included.

In this way, when the chip pretreatment agent is interposed between the surface of the chip C and the glass panel 1, the chip C does not adhere to the glass panel. Therefore, the chip C is completely removed from the glass panel in the subsequent cleaning process. Can be.

As mentioned above, although the preferred embodiment of the present invention has been described in detail, it should be considered that the technical scope of the present invention is not limited to the above-described embodiment, and various modifications and variations may be made within the following claims.

1: glass panel 2: scribing wheel
6: scribing head 29: wheel head
10 chip preprocessor 11: nozzle
12 pressure control unit 21 chip pretreatment source
22: air source C: chip
CPT: Chip Pretreatment

Claims (14)

A scribing head, a wheel holder rotatably installed on the scribing head, and a scribing wheel rotatably coupled to a lower end of the wheel holder to form a scribing line on the surface of the glass panel. In the scribing apparatus,
And a chip preprocessor for supplying a chip pretreatment agent to the surface of the glass panel in front of the advancing direction of the scribing wheel relative to the glass panel.
The method of claim 1,
And the chip preprocessor comprises a nozzle and a pressure regulating unit for adjusting and applying a pressure to the chip pretreatment agent to inject the chip pretreatment agent through the nozzle.
The method of claim 2,
And the pressure regulating unit is a regulator or a pressure controller disposed between the nozzle and the chip pretreatment source.
The method of claim 2,
And the pressure regulating unit is a regulator or a pressure controller disposed between the nozzle and the chip pretreatment source and between the nozzle and the air supply, respectively.
The method according to any one of claims 2 to 4,
And the nozzle is installed so that a virtual line extending from the axis of rotation of the wheel holder faces a point where the glass panel meets the glass panel.
The method according to any one of claims 2 to 4,
The scribing apparatus, characterized in that the nozzle is disposed so as to face the upper peripheral edge of the scribing wheel.
The method according to any one of claims 2 to 4,
And the nozzle is rotatably installed along the circumference of the scribing head.
The method according to any one of claims 2 to 4,
Four or more nozzles are arranged along the circumference of the scribing head, and at least four of the nozzles are provided on the left and right sides in the direction orthogonal to the conveying direction of the glass panel. Device.
The method according to any one of claims 1 to 4,
The scribing apparatus, characterized in that the chip pretreatment agent is a liquid surfactant.
The method according to any one of claims 2 to 4,
A scribing apparatus, characterized in that the vertical movement of the scribing head and the nozzle with respect to the surface of the glass panel is performed simultaneously.
The method according to any one of claims 2 to 4,
And the nozzle and the scribing head are separated and moved separately.
A scribing head, a wheel holder rotatably installed on the scribing head, and a scribing wheel rotatably coupled to a lower end of the wheel holder to form a scribing line on the surface of the glass panel. When forming a scribing line using a scribing apparatus, a chip pretreatment agent is sprayed in advance on a portion where a scribing line is to be formed before the scribing line is formed, so that the chip placed on the glass panel is a chip. A scribing method characterized by interposing a pretreatment agent.
The method of claim 12,
Scribing method, characterized in that for controlling the size of the applied width by adjusting the injection pressure of the chip pretreatment.
The method according to claim 12 or 13,
And the chip pretreatment agent is sprayed toward a point where an imaginary line extending from the axis of rotation of the wheel holder meets the glass panel.

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