KR100663865B1 - Glass scribing device for flat panel display and method thereof - Google Patents

Abstract

A glass scribing apparatus for flat panel display is provided to simultaneously form scribing lines on both faces of the glass at once and to correctly position scribing points of the glass in slit of a stage, thereby accomplishing correct and quick scribing work by fabricating a scribing device movable along the slit of the stage and both faces of the glass. The glass scribing apparatus comprises: a frame(10); a stage(12) that is extended from the frame and has slits(14) perpendicular to each other and structure of adsorbing glass(13) on top of the stage; a conveyor guide(18) that is installed to move along a conveyor bar(16) in length direction and along the slits to form scribe lines on the glass; and a pair of aligners(26) for moving the glass in a direction of forming the slits and transporting the glass on the stage. The frame has upper and lower ends which are positioned on top and bottom of surface of the stage. The aligner has a contact bar, a driving bar and a vacuum adsorption part to selectively adsorb and fix the glass.

Description

Glass scribing device for flat panel display and method

1 is a schematic perspective view showing a preferred embodiment of the glass scribing apparatus according to the present invention.

Figure 2 is a side cross-sectional view showing an aligner constituting an embodiment of the present invention.

3 is a plan view showing that the aligner constituting the embodiment of the present invention aligns the glass.

Figure 4 is a work flow chart showing sequentially the process of scribing the glass in the embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: frame 12: stage

13: Glass 14: Slit

16,16 ': Feeder 18,18': Feed guide

20,20 ': Wheel head 22,22': Scribing wheel

24: Image Acquisition Unit 26,26 ': Aligner

28: drive bar 30: contact bar

32: contact end 34: vacuum suction unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to flat panel displays, and more particularly, to a glass scribing apparatus used to cut all or part of the glass during the process of manufacturing the glass used to construct the flat panel display.

Flat panel displays include liquid crystal displays (LCDs), PDDPs, organic ELs, and the like. Such a flat panel display is generally formed between the upper and lower two pieces of flat glass.

Thus, in order to analyze the defects generated during the manufacturing process of flat panel display and to prevent the occurrence of defects later, the defects are separated by breaking and cracking the panel using the scribing wheel that is well processed. Do it. The separated defective parts are analyzed by performing various kinds of analysis. In general, an analytical room that performs panel analysis works using a diamond cutter to scribe and break manually.

However, when scribing by hand using a diamond cutter, there is a problem in that the scribing depth is not accurate and the straightness of the scribing is not accurate to break the desired point.

In addition, in severe cases, the defective parts of the glass are broken during the scribing and breaking process, so that the defective parts cannot be analyzed.

In order to solve this problem, the scribing is mechanically performed. In this case, when the glass is placed on the stage, the scribing is only performed on the upper surface of the glass, so the scribing is not performed properly. There is a problem. This is because the scribing wheel can only access the upper surface of the glass when the glass is placed on the stage.

In particular, in order to mechanically scribe two overlapped pieces of glass and analyze the defects, the scribing wheel must approach the surface of the glass on both sides of the glass. Since the other surface must be scribed upside down, there is a problem that the workability of the scribing operation is greatly degraded.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, and to be able to scribe both surfaces of the glass at the same time.

According to a feature of the invention for achieving the object as described above, the present invention comprises a frame; A stage which is formed to extend further from the frame as well as the inside of the frame, and has a slit elongated in a direction orthogonal to each other, and having a structure for adsorbing glass on the upper surface; A transfer guide having a scribing means installed in the longitudinal direction of the transfer table moving along the frame and scribing the glass while moving along the slit; A pair of aligners for moving the glass in the direction of formation of the slit by performing the movement of the glass on the stage; It is configured to include.

The frame is configured such that the upper end and the lower end are positioned above and below the upper surface of the stage.

The aligner is provided with a contact bar having a contact end in contact with the edge of the glass, a drive bar connected to the contact bar and driven by a separate drive source to move the contact bar, and installed at the bottom of the contact end of the contact bar. And a vacuum adsorption unit for selectively adsorbing the glass.

The transfer guide is further provided with an image acquisition means for observing the position and defect of the glass to be scribed.

The scribing means is a scribing wheel provided in the wheel head.

The scribing means is either an ultrasonic head for irradiating ultrasonic waves or a laser head for irradiating a laser.

According to another feature of the invention, in scribing by scribing means to align the glass seated on the stage with the aligner, moving the aligner and the scribing means to the initial position, and the glass Moving to a reference position using an aligner, specifying a glass size and a scribing point using an image acquisition unit, placing a scribing point of the glass in one side slit formed on a stage, and Scribing simultaneously on both surfaces of the glass by a pair of scribing means moving along the top of the stage and the slit, and moving along the slit in the direction perpendicular to the top of the stage and the slit Gold formed on both sides of the glass at the same time by a pair of scribing means Gyoha is formed by performing a scribing direction.

Positioning the scribing point of the glass in the slit of the stage is performed by the aligner.

In the step of designating the scribing point by the image acquisition unit, the aligner is in a retracted state from the glass.

According to the glass scribing apparatus for flat panel display according to the present invention having such a configuration, the scribing becomes more reliable since the scribing is performed mechanically, and the scribing operation on both surfaces of the glass in one operation. Since it is possible to perform the scribing operation more quickly, the setting of the reference position in setting the position of the glass has the advantage of scribing to a more accurate position because it is based on this.

Hereinafter, a preferred embodiment of a glass scribing apparatus for a flat panel display according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic perspective view of a preferred embodiment of a glass scribing apparatus for a flat panel display according to the present invention, FIG. 2 is a side view of the aligner constituting an embodiment of the present invention, and FIG. A plan view is shown showing that the aligner constituting the invention embodiment guides the glass.

As shown in these figures, the frame 10 forms the skeleton of a scribing apparatus. The frame 10 may be installed on a separate support. Two frames 10 are installed side by side on the support at predetermined intervals.

The stage 12 is a part where the glass 13 is seated. The top surface of the stage 12 is at a lower position than the top of the frame 10, and part of the frame 10 is at a position lower than the top surface of the stage 12. The upper surface of the stage 12 is provided with a structure capable of attracting the glass 13. For example, a vacuum pressure is applied to the upper surface of the stage 12 to adsorb the glass 13.

 The stage 12 is formed with slits 14 perpendicular to each other. The slit 14 is a path through which a scribing wheel 22 ′ for scribing the glass 13 in contact with the upper surface of the stage 12 is moved.

Then, the stage 12 extends longer in the extending direction of the slit 14 at the position where each of the slits 14 ends. More precisely, the slit 14 is formed between the portion of the further extended stage 12 and the portion of the stage 12 inside the frame 10.

For reference, a portion inside the frame 10 of the stage 12 is formed to be relatively thinner than other portions so as not to interfere with the transfer of the carriage 16 '. Of course, the configuration for supporting the stage 12 of the relatively thin portion should be configured so as not to disturb the conveyance of the carriage 16 '.

On the upper and lower portions of the stage 12 on which the glass 13 is seated, transfer trays 16 and 16 ′ which are moved along the frame 10 are respectively installed. Both ends of the carriages 16 and 16 'are movably supported by the frame 10 and are moved by separate driving sources.

Transfer guides 18 and 18 'are installed to be movable in the longitudinal direction of the transfer tables 16 and 16', respectively. The transfer guides 18 and 18 'are moved along the transfer trays 16 and 16'. Wheel guides 20 and 20 'are installed on the transfer guides 18 and 18', respectively. For reference, a direction in which the wheel heads 20 and 20 'move along the transfer guides 18 and 18' is referred to as an X direction, and a direction orthogonal to this on the stage 12 is referred to as a Y direction.

The wheel heads 20 and 20 'are installed to face each other with respect to the upper surface of the stage 12, respectively. The wheel heads 20 and 20 'are moved by the carriages 16 and 16' and the transfer guides 18 and 18 'by separate driving sources.

Scribing wheels 22 and 22 'are installed in the wheel heads 20 and 20', respectively. The scribing wheels 22 and 22 'are formed in a substantially disk shape, and their edges serve to draw a scribing line on the surface of the glass 13. To this end, the scribing wheels 22 and 22 'have sharp edges. The scribing wheels 22 and 22 ′ can be lifted up and down in the upper direction and the opposite direction of the stage 12 in the state of being installed in the wheel heads 20 and 20 ′.

The image acquisition unit 24 is provided to move integrally with the wheel head 20. The image acquisition unit 24 is a part for obtaining image data related to the glass 13. The image acquisition unit 24 may be a camera or a microscope. The image acquisition unit 24 may also designate a scribing position of the glass, and may also serve to observe the defect of the glass.

The aligner 26 allows the glass 13 to be correctly positioned on the top surface of the stage 12. The two aligners 26 are operated in a direction orthogonal to each other on the top surface of the stage 12. That is, the aligner 26 is moved in a two-dimensional plane, which is the top surface of the stage 12.

The aligner 26 includes a driving bar 28 connected to a separate driving source and driven, and a contact bar 30 directly contacting the glass 13 at the tip of the driving bar 28. . As shown in FIG. 2, the contact bar 30 has a predetermined length, and the contact end 32 is stepped at a position facing the top surface of the stage 12. One end edge of the glass 13 is in contact with one surface of the contact end 32. A vacuum suction part 34 is installed on a surface of the contact end 32 facing the upper surface of the stage 12. The vacuum adsorption portion 34 is adsorbed onto the glass 13 using a vacuum. Thus, the aligners 26 and 26 'can advance the glass 13 back and forth, respectively.

Hereinafter, the operation of the glass scribing apparatus for flat panel display according to the present invention having the configuration as described above will be described in detail.

Figure 4 shows in sequence the operation of the scribing apparatus of the embodiment of the present invention.

First, in FIG. 4A, the initial state of the scribing apparatus is shown. Operation preparation is completed. At this time, the aligners 26 and 26 'move backward and move to the initial position, and both the wheel heads 20 and 20' also move to the initial position. The initial positions of the wheel heads 20 and 20 'are at the upper left of the figure as shown in FIG. 4A. For reference, FIG. 4A illustrates a state in which the stage 12 is partially removed from the slit 14.

Next, the glass 13 is loaded into the stage 12. At this time, the edge of the glass 13 is in contact with the contact end 32 of the aligner (26, 26 '), respectively. As such, the edges of the glass 13 are brought into contact with the aligners 26 and 26 '. This state is shown in FIG. 4B.

With the glass 13 in close contact with the aligners 26 and 26 'as described above, the aligners 26 and 26' are advanced so that the glass 13 is in the reference position on the stage 12. . The reference position is set in advance, and can be set by moving the aligners 26 and 26 'to a specific position. After the glass 13 is moved to the reference position, the upper surface of the stage 12 is provided with a vacuum pressure to be adsorbed. This state is shown in FIG. 4C.

Now, the aligners 26, 26 'are retracted with the current position stored so that they are no longer in contact with the glass 13. This state is shown in FIG. 4D.

Next, in the state in which the aligners 26 and 26 'are reversed, the image acquisition unit 24 moves along the conveyance table 16 as shown in FIG. Specify a bing point.

Once a scribing point is specified, one of the aligners 26, 26 'is operated to transport the glass 13 so that the scribing point is in a position corresponding to the slit 14. For this purpose, the stage 12 no longer vacuum-adsorbs the glass 13. In this embodiment, scribing is first performed in the X direction.

To this end, as shown in FIG. 4F, the aligner 26 ′ pushes the glass 13 in the Y direction. The aligner 26 ′ transfers the glass 13 such that the scribing point of the glass 13 is in a position corresponding to the X-direction slit 14.

Once the scribing point is moved to the position corresponding to the slit 14, the stage 12 sucks the glass 13 in a vacuum. In this state, the wheel heads 20 and 20 'are transported in the X-axis direction along the conveyers 16 and 16'. Of course, when the scribing wheels 22 and 22 'come to the scribing point, the scribing wheels 22 come into contact with the glass 13 to draw gold. This state is illustrated in FIG. 4G.

Next, the glass 13 is moved again using the aligner 26 'to draw the X-axis gold parallel to the gold drawn in FIG. 4G. That is, the aligner 26 'is used to move the glass 13 in the Y-axis direction so that another scribing point is located in the slit 14 formed in the X-axis direction. This state is shown in FIG. 4H.

When the scribing point of the glass 13 is located in the slit 14, the stage 12 adsorbs the glass 13. Then, the wheel heads 20 and 20 'are moved along the conveyers 16 and 16' in the X-axis direction to draw gold between scribing points. This state is shown in FIG. 4I.

Now that you have drawn all the gold in the X-axis, draw the gold in the Y-axis. To this end, the glass 13 is moved back to the reference position. This is performed in a state where the aligner 26 'adsorbs the vacuum adsorption portion 34 to the edge of the glass 13. Of course, at this time, the stage 12 no longer adsorbs the glass 13. This state is shown in FIG. 4J.

Next, the aligner 26 is used to move the glass 13 in the X-axis direction. That is, the aligner 26 pushes the glass 13 so that the scribing point is positioned in the slit 14 formed in the Y-axis direction. This state is shown in FIG. 4K.

Now, the stage 12 adsorbs the glass 13 by vacuum and fixes it. In this state, the wheel heads 20 and 20 'are transferred. At this time, the carriages 16 and 16 'on which the wheel heads 20 and 20' are installed move along the frame 10 in the Y-axis direction. In this case, when the scribing wheels 22 and 22 'come to the scribing point, the scribing wheels 22 and 22' are brought into close contact with the glass 13 to draw gold in the Y-axis direction. This state is shown in FIG. 4L.

Once one gold is drawn in the Y-axis direction, the glass 13 is further moved using the aligner 26. That is, the next scribing point is to be located in the slit 14 formed in the Y-axis direction, as shown in Fig. 4N.

Next, in the state where the stage 12 sucks the glass 13 in a vacuum, the wheel heads 20 and 20 'are moved in the Y-axis direction to draw gold between scribing points. This state is shown in FIG. 4m.

After the gold is drawn to connect all of the scribing points, the aligner 26 moves the glass 13 to a reference position by moving the glass 13 in an adsorbed state. The state in which the glass 13 is moved to the reference position is shown in FIG. 4O.

Finally, the glass 13 is removed from the stage 12 to break and separate the scribed portion. This state is shown in FIG. 4P.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

For example, in the present invention, the scribing wheels 22 and 22 'need not be used to scribe the glass 13. That is, scribing may be performed using a laser head irradiating a laser instead of the scribing wheels 22 and 22 '. Alternatively, an ultrasonic head for performing scribing with ultrasonic waves may be used.

In the glass scribing apparatus of the flat panel display according to the present invention as described in detail above, the following effects can be obtained.

In the present invention, the scribing means is installed so as to move simultaneously along both surfaces of the glass, and gold is simultaneously drawn on both surfaces of the glass. Therefore, scribing is performed on both surfaces of the glass at the same time, in particular, two-piece glass breaking is more reliably performed, and scribing on both surfaces of the glass in one operation can be performed more quickly. There is also the effect that the scribing operation is completed.

Further, in the present invention, when the scribing point of the glass is positioned in the slit of the stage, the movement of the glass starts from the reference position of the stage, so that the scribing point can be accurately positioned on the slit relatively. Cruising can be done more accurately.

Claims (9)

A frame; A stage which is formed to extend further from the frame as well as the inside of the frame, and has a slit elongated in a direction orthogonal to each other, and having a structure for adsorbing glass on the upper surface; A transfer guide provided with scribing means installed in the longitudinal direction of the transfer table moving along the frame and scribing the glass while moving along the slit; A pair of aligners for moving the glass in the direction of formation of the slit by performing the movement of the glass on the stage; The scribing apparatus of the glass for flat panel display comprising a. The scribing apparatus of the glass for flat panel display according to claim 1, wherein the frame is configured such that an upper end and a lower end of the frame are positioned above and below an upper surface of the stage. The method of claim 1, wherein the aligner is A contact bar having a contact end in contact with an edge of the glass, A driving bar connected to the contact bar and driven by a separate driving source to move the contact bar; Scribing apparatus for a flat panel display glass, characterized in that it comprises a vacuum adsorption unit is installed on the bottom of the contact end of the contact bar to selectively attract the glass. The scribing apparatus of claim 1, wherein the transfer guide further includes an image acquisition unit for observing the position and defects of the scribed glass. The scribing apparatus according to any one of claims 1 to 4, wherein the scribing means is a scribing wheel provided in the wheel head. The scribing apparatus according to any one of claims 1 to 4, wherein the scribing means is either an ultrasonic head for irradiating ultrasonic waves or a laser head for irradiating a laser. In aligning the glass seated on the stage with the aligner and scribing by scribing means, Moving the aligner and scribing means to an initial position; Moving the glass to a reference position using an aligner; Specifying a glass size and a scribing point using an image acquisition unit, Positioning a scribing point of the glass on one side slit formed on a stage; Scribing simultaneously on both surfaces of the glass by a pair of scribing means moved along the top of the stage and the slit, And scribing in a direction orthogonal to the gold formed on both sides of the glass at the same time by a pair of scribing means moved along the top of the stage and the slit orthogonal to the slit. A scribing method of glass for flat panel display, characterized in that. 8. The scribing method according to claim 7, wherein the scribing point of the glass is placed in the slit of the stage by an aligner. The scribing method of claim 8, wherein the aligner is in a retracted state from the glass when the image acquisition unit designates a scribing point.

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