KR20060078537A - Roller pusher and vacuum plate having the same - Google Patents

Abstract

The present invention discloses a roller pusher capable of easily separating a dummy glass without damaging the liquid crystal panel in a liquid crystal display cell process and an adsorption plate having the same. The present invention discloses a plurality of adsorption pads for adsorbing and fixing a substrate according to the present invention; A fixed plate on which the plurality of suction pads are disposed; And a plurality of roller pushers disposed in the edge region of the fixed plate.

Therefore, the adsorption plate of the present invention has the effect of easily separating the dummy glass without damaging the liquid crystal panel.

Cell Process, Adsorption Plate, CPS, Roller, Dummy Glass

Description

ROLLER PUSHER AND VACUUM PLATE HAVING THE SAME}

1 is a view for explaining a process flow in general CPS (CPS) equipment.

Figure 2 shows the structure of the adsorption plate used in CS equipment according to the prior art.

3 is a view for explaining a process of removing the dummy glass from the suction plate according to the prior art.

Figures 4a and 4b is a view showing the appearance of glass breakage failure when removing the dummy glass from the suction plate according to the prior art.

5 is a plan view of the adsorption plate used in the CS equipment according to the present invention.

6 is a front view showing the structure of the adsorption plate according to the present invention.

7 is a view showing a structure of a roller pusher fastened to an adsorption plate according to the present invention.

8A and 8B are views illustrating a state in which the dummy glass is removed using a suction plate to which a roller pusher is fastened according to the present invention.                 

* Description of the symbols for the main parts of the drawings *

100: adsorption plate 105: shaft

108: fixed plate 111: adsorption pad

112: roller pusher

The present invention relates to a roller pusher capable of easily separating a dummy glass without damaging the liquid crystal panel in a liquid crystal display cell process, and an adsorption plate having the same.

In general, a liquid crystal display device has a structure in which a lower substrate on which thin film transistors are arranged and an upper substrate on which a color filter is formed are bonded to each other with a liquid crystal layer interposed therebetween.

As such, a process of manufacturing one liquid crystal panel by bonding the upper substrate and the lower substrate to each other is called a cell process.

Brief description of the cell process is as follows.

The cell process includes an alignment process for forming an alignment layer in order to align liquid crystals in one direction on a lower substrate on which a thin film transistor is arranged and an upper substrate on which a color filter is formed, and by bonding the two substrates together to maintain a constant cell gap. A bonding step, an encapsulation step of injecting liquid crystal between the upper and lower substrates subjected to the bonding step, and an inspection step (cell inspection step) for inspecting whether the liquid crystal panel in which the encapsulation step is performed is defective.                         

The alignment process forms an alignment film made of a polymer material on the upper substrate and the lower substrate. The alignment layer is formed to have a uniform thickness on the upper substrate and the lower substrate by a roll coating method using a PI (Polyimide) -based material.

As such, when the alignment layer is coated on the upper substrate and the lower substrate, the rubbing process is performed so that the polymer chains are aligned in a predetermined direction by rubbing the surface of the alignment layer with a rubbing cloth.

When the rubbing process is completed as described above, in order to bond the two substrates, seal pattern printing, silver (Ag) dotting, and spacer forming processes are performed on the upper substrate and the lower substrate.

The seal printing process is mainly performed on the upper substrate where the color filter is formed, and the silver dotting and the spacer forming process are performed on the lower substrate.

Then, a bonding process of bonding two substrates is performed, and then a cell cutting process of separating the bonded substrates into a liquid crystal panel unit using a CPS (Cutting Penetrable Scribe) device is performed.

Hereinafter, the cell cutting process will be described with reference to the drawings.

1 is a view for explaining a process flow in general CPS equipment.

In FIG. 1, a scribe process of cutting the upper and lower substrates bonded by a CPS device to a liquid crystal panel unit, a process of separating the liquid crystal panel unit into a liquid crystal unit, and a grinding process are sequentially performed. Shown.

First, when the two substrates are bonded together, the substrates loaded in the cassette are transferred to the CS equipment in order to proceed with the scribe process and the liquid crystal panel separation process.

When the substrate loaded in the cassette is loaded on the CPS equipment (glass loading: ①), the substrate is moved to a conveyor to proceed with a scribing operation (align / scribing: ③).

At this time, before proceeding with the scribing process, the bonded substrate is adjusted in the center direction, and then the number of the substrate is checked using OCR (centering / OCR reading: ②).

Then, the substrate is moved to a scribe process.

In the scribing process (②), grooves are formed on the substrate by a diamond cutter to separate the bonded substrates into liquid crystal panel units, and the substrates are aligned before scribing to form an accurate scribe line.

 As such, when the scribing process (②) of cutting the aligned substrates is completed, steam breaking for injecting steam between the cracks formed on the bonded substrates by the scribing process to facilitate separation. steam breaking process (⑤).

Then, in order to proceed with the steam breaking process, the substrate on which the scribe line is formed is raised to the steam breaking process stage (④).

When the steam breaking process is completed (⑤), the liquid crystal panel is separated from the bonded substrate (⑥), the separated liquid crystal panel is inverted (⑦), and the alignment and dummy glass removal of the substrate are confirmed. .

Then, the process of trimming the edge region of the substrate (centering / curette removal: ⑧) is performed, and then the liquid crystal panel separated out of the equipment is discharged (⑨).

At this time, when the steam braking process is completed, the substrate bonded by the adsorption plate attached to the trans hand robot arm is lifted up, and then the liquid crystal panel is separated and transported.

2 is a view showing the structure of the adsorption plate used in the CS equipment according to the prior art.

As shown in FIG. 2, the suction plate 10 attached to the trans hand robot arm includes a shaft 5 for fastening with the trans robot robot arm, a fixed plate 8 fixed to the shaft 5, and A plurality of suction pads 11 fastened to the fixing plate 8 at predetermined intervals, and separation pins 12 arranged to separate the dummy glass in the edge region of the fixing plate 8.

The fixing plate 8 may have various sizes according to the size of the liquid crystal panel, and the number of adsorption pads 11 fastened to the fixing plate 8 may also be fastened in various numbers according to the size of the liquid crystal panel.

3 is a view for explaining a process of removing the dummy glass from the adsorption plate according to the prior art, as shown, the adsorption plate 10 to separate the liquid crystal panel from the substrate subjected to the scribing process and the steam breaking process To adsorb the substrate.

Adsorption pads 11 fastened to the fixed plate 8 of the adsorption plate 10 are disposed at positions corresponding to the liquid crystal panel of the substrate, so as to adsorb the liquid crystal panel region when the substrate is adsorbed.

Thus, when the adsorption pad 11 adsorbs the substrate to separate the liquid crystal panel 15 from the substrate, the substrate is raised when the dummy glass 16 is completely separated or not completely separated.

In this case, in order to remove the dummy glass that is not completely removed, the separation pin 12 disposed in the edge region of the adsorption plate 10 is used.

That is, in the state where the liquid crystal panel 15 is fixed by the adsorption plate 10, the dummy glass 16 which is not completely separated is separated by the separating pin 12.

However, after fixing the substrate to which the adsorption pad of the adsorption plate is bonded, as in the conventional cell process, and then vertically lowering the separation pin 12 to remove the dummy glass, the liquid crystal is separated by the separation pin 12 moving up and down. There is a risk of damaging the panel.

This is because the position or arrangement of the substrate may be disturbed during the movement of the substrate, thereby preventing the adsorption pad 11 of the adsorption plate 10 from accurately adsorbing the liquid crystal panel region of the substrate.

Thus, the position of the separation pin 12 is located in the liquid crystal panel region, thereby damaging the liquid crystal panel region during the dummy glass removal process.

4A and 4B are views illustrating a state in which a glass breakage defect occurs when the dummy glass is removed from the suction plate according to the related art.

As shown in FIGS. 4A and 4B, the adsorption pad 11 disposed on the fixed plate 8 of the adsorption plate fixes a portion of the liquid crystal panel 15 of the bonded substrate, but the position of the separation pin 12 is It can be seen that it is located in the area of the liquid crystal panel 15 rather than in the area of the dummy glass 16.

Thus, when the separation pin 12 is lowered while the adsorption plate fixes the liquid crystal panel 15 in the liquid crystal panel separation / conveying process, the liquid crystal panel 15 is damaged.

In addition, after the dummy glass 16 is separated by the separating pin 12, the edge of the liquid crystal panel 15 may be damaged in the process of returning the separating pin 12 again.

As such, when the dummy glass 16 attached to the liquid crystal panel 15 is removed by the separating pin 12 which merely moves up and down, even if the force of the separating pin 12 is transmitted to the dummy glass 16, the force is applied. There is a great risk that the edge area of the liquid crystal panel 15 may be damaged due to the influence on the liquid crystal panel 15.

The present invention provides a roller pusher and an adsorption plate having the same, which can easily separate the dummy glass without damaging the liquid crystal panel by changing the structure of the separating pin separating the dummy glass in the cell process during the manufacturing process of the liquid crystal display device. The purpose is to provide.

Roller pusher according to the present invention for achieving the above object,

roller; A support for supporting the roller; A moving part coupled to the support part to move the roller; And a fixing part corresponding to the moving part.

Here, it characterized in that it further comprises a support shaft for supporting the fixing portion.

In addition, the bonding plate according to the present invention, a plurality of adsorption pad for adsorbing and fixing the substrate;

A fixed plate on which the plurality of suction pads are disposed; And

And a plurality of roller pushers disposed in the edge region of the fixed plate.

Here, the roller pusher is characterized by consisting of a roller, a support portion for supporting the roller, a moving portion fastened to the support portion to move the roller, and a fixing portion corresponding to the moving portion.

According to the present invention, the separation pin for separating the dummy glass in the cell process during the manufacturing process of the liquid crystal display device can be changed in the form of a roller pusher to easily separate the dummy glass without damaging the liquid crystal panel.

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

5 is a plan view of the adsorption plate used in the CS equipment according to the present invention.                     

FIG. 5 illustrates a state in which an adsorption plate adsorbs and fixes a substrate on which a scribing process and a steam breaking process are completed.

A part is a some adsorption pad arrange | positioned at an adsorption plate, and shows the position which adsorbed and fixed the liquid crystal panel 115. FIG.

That is, as shown in the figure, the plurality of adsorption pads disposed on the adsorption plate serve to fix the substrate by adsorbing the liquid crystal panel 115 at a predetermined interval in the bonded substrate.

In addition, the substrate has a dummy glass 116 attached to an outer circumference of the liquid crystal panel 115, and the dummy glass 116 is exactly a substrate region other than the liquid crystal panel 115 separated from the substrate bonded in the cell cutting process. Is referred to as a dummy glass 116 region.

In order to separate the liquid crystal panel 115 from the dummy glass 116, a roller pusher 112 is disposed at an edge region of the adsorption plate, that is, an area corresponding to an outer region of the corner of the liquid crystal panel 115.

Accordingly, the suction plate disposed on the trans-hand robot arm fixes the substrate on which the scribing process and the steam breaking process are completed, and then lifts the substrate to a predetermined distance using a roller pusher 112 disposed on the suction plate. The liquid crystal panel 115 is separated by removing the portion 116.

In the present invention, since the roller pusher 112 is used to separate the liquid crystal panel 115, the dummy glass 116 may be damaged without damaging the liquid crystal panel 115 even if the substrate is moved due to the movement of the substrate. ) Can be easily removed.

6 is a front view showing the structure of the adsorption plate according to the present invention.

As shown in FIG. 6, a plurality of adsorption pads 111 for adsorbing and fixing a substrate in a liquid crystal display cell process are disposed on a fixed plate 108, and a central region of the fixed plate 108 is a trans-hand robot. The shaft 105 which is fastened to the arm is fastened.

In addition, a plurality of roller pushers 112 are disposed in the edge region of the fixing plate 108.

Since the adsorption pads 111 adsorb and fix the liquid crystal panel to be separated from the bonded substrate, when the adsorption pads 111 are disposed on the fixed plate 108 of the adsorption plate 100, It is disposed at a position corresponding to the liquid crystal panel region.

And since the roller pushers 112 are disposed to remove the dummy glass formed in the outer region of the liquid crystal panel, when the roller pushers 112 are disposed on the fixed plate of the adsorption plate 100, the pile of the bonded substrate It is disposed at a position corresponding to the glass.

The roller pusher 112 is in direct contact with the bonded substrate to remove the dummy glass portion, a support for supporting the roller, a moving part engaged with the support to move the roller, and corresponding to the moving part. It consists of a fixed part (refer FIG. 7).

Since the roller pusher 112 uses the fixing plate 108 of the suction plate 100 as a support shaft, the roller pusher 112 can move up and down in a state where the fixing part of the roller pusher 112 is fixed to the fixing plate 108. have.

7 is a view showing the structure of the roller pusher fastened to the adsorption plate according to the present invention.

As shown in FIG. 7, the roller pusher 112 includes a roller 112d capable of moving along a bonded substrate while rotating, a support part 112c supporting the roller 112d, and the support part 112c. ) And a moving part 112b which rotates and moves the roller 112d, and a fixing part 112a corresponding to the moving part 112b.

In particular, the fixing portion 112a of the roller pusher 112 is fixed to the fixing plate 108 of the adsorption plate, and the roller 112d of the roller pusher 112 moves up and down with the fixing plate 108 as a support shaft. It can move in the direction.

The moving part 112b and the fixing part 112a of the roller pusher 112 are disposed to be in contact with each other so that the moving part 112b can move in an up and down direction along an inclined surface formed in the fixing part 112a. It is.

That is, as shown in the figure, the cross-sectional structure of the moving part 112b has a triangular shape with three sides, and the cross-sectional structure of the fixing portion 112a also has a triangular shape with three sides so as to correspond thereto. It is.

Therefore, the inclined surface of the moving part 112b and the inclined surface of the fixing part 112a are able to move upward and downward along the inclined surface of the fixing part 112a.                     

However, in the present invention, since the moving part 112b moves along the inclined surface of the fixing part 112a, the roller 112d coupled to the moving part 112b moves upward and downward when the moving part 112b moves upward and downward. As it is formed, it moves in the horizontal direction.

That is, when the roller 112d of the roller pusher 112 moves in the vertical direction, the roller pusher 112 is accurately positioned in the dummy glass region because the roller pusher 112 moves in the horizontal direction corresponding to the inclined surface of the fixing part 112a. If not, the process margin for removing the dummy glass is improved.

Therefore, even if the position of the adsorption plate is misaligned or changed in the cell cutting process, there is an effect that the dummy glass portion can be removed without damaging the liquid crystal panel.

8A and 8B are views illustrating a state in which the dummy glass is removed using a suction plate to which a roller pusher is fastened according to the present invention.

As shown in FIGS. 8A and 8B, even if the position of the roller pusher 112 disposed on the bonding plate is located above the liquid crystal panel 115 due to the positional shift or misalignment of the adsorption plate, the dummy does not damage the liquid crystal panel 115. It can be seen that the glass 116 is removed.

The fixing part 112a of the roller pusher 112 is fixed to the fixing plate 108 of the suction plate, and the moving part 112b of the roller pusher 112 moves up and down along the inclined surface of the fixing part 112a. Go to.

At this time, since the roller 112d connected by the moving part 112b and the support part 112c moves in the vertical direction, and moves in the left and right direction, the roller 112d can move along the substrate while rotating. .

Therefore, in the present invention, even when the position of the roller 112d of the roller pusher 112 is located above the liquid crystal panel 115, when the roller 112d moves in the vertical direction, the roller 112d moves in a horizontal direction by a predetermined distance. Therefore, the portion of the dummy glass 116 can be removed.

Since cracks are formed on the bonded substrate while the scribe process and the steam breaking process are performed on the bonded substrate in the cell cutting process, the roller 112d of the roller pusher 112 exerts downward force, When the panel 115 and the dummy glass 116 are moved, the dummy glass 116 can be easily removed.

In particular, since the adsorption pads of the adsorption plate fix the area of the liquid crystal panel 115 of the substrate to which the adsorption pads are bonded, the dummy glass 116 may be removed without damaging the liquid crystal panel 115.

As described in detail above, the present invention has an effect that can be separated from the dummy glass easily without damage to the liquid crystal panel by changing the structure of the separation pin separating the dummy glass in the cell process during the manufacturing process of the liquid crystal display device in the form of a roller pusher There is.

In addition, when the bonded substrate is moved by the conveyor, there is an advantage that the dummy glass can be separated without damaging the liquid crystal panel even if the positional change of the substrate and the position with the substrate are distorted.                     

The present invention is not limited to the above-described embodiments, and various changes can be made by those skilled in the art without departing from the gist of the present invention as claimed in the following claims.

Claims (9)

roller; A support for supporting the roller; A moving part coupled to the support part to move the roller; And And a fixing part corresponding to the moving part. The method of claim 1, The roller pusher further comprises a support shaft for supporting the fixing portion. The method of claim 1, Roller moving pusher, characterized in that formed in a triangular shape so that the movable portion and the fixed portion is in contact with each other, the movable portion can move along the fixed portion. The method of claim 1, The moving part is a roller pusher, characterized in that it moves up and down along the inclined surface formed on the fixed portion. The method of claim 4, wherein The roller is a roller pusher, characterized in that for moving the moving portion along the inclined surface of the fixed portion. A plurality of adsorption pads for adsorbing and fixing the substrate; A fixed plate on which the plurality of suction pads are disposed; And And a plurality of roller pushers disposed in the edge region of the fixed plate. The method of claim 6, The roller pusher is composed of a roller, a support part for supporting the roller, a moving part engaged with the support part to move the roller, and a fixing part corresponding to the moving part. The method of claim 6, And the roller pusher is disposed to remove the dummy glass formed on the outside of the liquid crystal panel in a cell cutting process of the liquid crystal display device. The method of claim 6, Adsorption pads disposed on the fixed plate are disposed at positions corresponding to the liquid crystal panel of the bonded substrate, and roller pushers disposed on the fixed plate are disposed at positions corresponding to the dummy glass of the bonded substrate.

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