KR100707858B1 - Aligning apparatus of glass substrate for electrodes cutting laser - Google Patents

Abstract

Disclosed is a glass substrate alignment apparatus of a laser electrode cutting device. The glass substrate aligning apparatus of the laser electrode cutting apparatus disclosed herein comprises: an arm on which a glass substrate is disposed, a y-axis driving motor for supporting the arm, a female support having a hollow structure, and driving the female support in the y-axis direction; And a y-axis linear guide slidably coupled with the arm support in the y-axis direction, and a pair of grips driven in a direction facing each other or away from each other simultaneously in the x-axis direction.

Description

Aligning apparatus of glass substrate for electrodes cutting laser

1 is a schematic perspective view showing an electrode formed on a glass substrate of a display panel.

Figure 2 is a perspective view of a glass substrate alignment device of the laser electrode cutting device according to the present invention.

3 is a perspective view of the glass substrate aligning means of FIG. 2.

4 is a schematic view for explaining the operation of the glass substrate alignment means 200 of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: glass substrate alignment device 110: arm

112: hole 120: arm support

122: pneumatic line 130: y-axis linear guide

140: y-axis drive motor 150: glass substrate alignment sensor

160: x-axis linear guide 200: glass substrate alignment means

210: connecting member 220: power transmission device

222: driving pulley 224: driven pulley

226: reversible motor 230: fixed member

240: grip part 242: grip

The present invention relates to a glass substrate aligning apparatus of a laser electrode cutting apparatus, and more particularly, to an apparatus for preliminarily aligning a glass substrate in a laser processing apparatus for cutting the electrodes formed on the glass substrate of the display panel.

In general, short circuits are connected to each cell during the manufacturing process in order to prevent damage to transistors due to static electricity during the production of display panels such as LCDs, or to simplify testing such as aging. After completion, they must be removed until the module is assembled.

1 is a schematic perspective view showing an electrode formed on a glass substrate of a display panel.

Referring to FIG. 1, the front substrate and the rear substrate used in the display panel are made of a glass substrate. The glass substrate 10 has a plurality of unit cells selectively emitting light. On the four edges of the glass substrate 10, a plurality of electrodes 13 for applying a voltage to selectively emit light of unit cells are disposed at predetermined intervals.

The manufacturing process of the glass substrate 10 includes an aging process for checking whether all the cells of the glass substrate 10 work properly for a long time. The aging process is performed by applying a voltage in a state in which all of the electrodes 13 of the glass substrate 10 are shorted in order to easily perform this. At this time, the short of the electrodes 13 is made by printing the aging electrode 15 on the electrodes 13 so as to be orthogonal to them.

After the aging process is completed, the shorted electrodes 13 should be made in a state before shorting, that is, each electrode 13 is disconnected from each other. For this purpose, conventionally, a method of removing the electrodes 15 for aging by an etching process and disconnecting each electrode 13 from each other or a mechanical method has been used. In the etching process, as it is known, the process is relatively complicated, which requires a lot of processing time, and because chemicals are used, there are disadvantages in terms of environment friendliness. When the short circuit line is removed by a mechanical grinder, there is a problem that the glass substrate is broken or causes static electricity due to mechanical vibration.

Recently, a method of cutting electrodes for applying a voltage to each cell using a laser device is mainly used.

The laser device for cutting electrodes includes a cassette having a plurality of glass substrates loaded thereon, a glass substrate extracting device for extracting one glass substrate from the cassette, and a laser processing operation of the glass substrates following the laser processing operation. And a transfer unit for transferring to a table, and a laser processing device for cutting an electrode formed on the glass substrate transferred to the work table.

On the other hand, after the conveying unit transfers the glass substrate located on the take-out device to the work table, when the glass substrate is not aligned from the work table when cutting the electrode with the laser processing device, the vision camera attached to the laser processing device is glass. In some cases, the alignment mark of the substrate may not be recognized, and thus laser processing may be interrupted. In particular, in the electrode cutting device to be fine laser processing is required because the high precision cutting operation is necessary for the alignment of the glass substrate.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide a glass substrate alignment apparatus required for the electrode cutting device of the display panel using a laser.

In order to achieve the above technical problem the glass substrate alignment device of the laser electrode cutting device of the present invention:

An arm on which a glass substrate is disposed;

An arm support part supporting the arm and having a hollow structure;

A y-axis driving motor for driving the arm support in the y-axis direction;

A y-axis linear guide slidably coupled with the arm support in the y-axis direction; And

Glass substrate alignment means for symmetrically aligning the glass substrate disposed on the arm in the x-axis direction with respect to the arm, having a pair of grips driven in a direction facing each other or away from each other simultaneously in the x-axis direction. It is characterized by including;

According to one aspect of the invention, the glass substrate alignment means is:

A connection member fixedly attached to the lower portion of the linear guide in the x-axis direction;

A drive pulley and a fixed pulley installed to be spaced apart from each other under the connection member;

A timing belt surrounding the outer circumference of the driving pulley and the fixed pulley;

Fixing member for fixing the end of each grip portion to the portion facing each other in the timing belt; And

Rotating the rotating shaft of the drive pulley, it is provided with a reversible motor rotates in both directions.

In addition, a grip made of engineering plastic is installed on a surface of the grip part contacting the glass substrate.

The grip is preferably made of polyether ether ketone (PEEK) plastic.

Teflon coating is preferably formed on the surface of the arm.

On the other hand, the glass substrate alignment device of the present invention:

An x-axis linear guide slidably coupled to the bottom of the y-axis linear guide in the x-axis direction; And

And an x-axis driving motor for driving the x-axis linear guide in the x-axis direction.

Hereinafter, the glass substrate alignment device of the laser electrode cutting device according to the present invention with reference to the accompanying drawings will be described in detail.

2 is a perspective view of the glass substrate aligning device of the laser electrode cutting device according to the present invention, Figure 3 is a perspective view of the glass substrate aligning means of FIG.

First, referring to FIG. 2, the glass substrate aligning apparatus 100 includes an arm 110 that enters a cassette (not shown) on which a glass substrate (not shown) is loaded and loads one glass substrate thereon, and the arm. And a y-axis driver for feeding 110 in the y-axis direction, and an x-axis driver for feeding the y-axis drive to the x-axis.

The y-axis driving unit includes an arm support 120 supporting the arm 110 thereon, a y-axis linear guide 130 extending in the y-axis direction so as to slidably support the arm support 120, and the arm support 120. It consists of a y-axis drive motor 140 for driving. A plurality of holes 112 are formed in the arm 110. Arm support portion 120 has a hollow structure and a plurality of pneumatic lines 122 are connected. This pneumatic line 122 is connected to a vacuum pump (not shown). The glass substrate is adsorbed on the arm 110 by the hole 112 through the pneumatic line 122.

The surface of the arm 110 is preferably in contact with the glass substrate is smooth, the Teflon coating is formed so that no scratches occur when the glass substrate is slid on it.

The x-axis driving unit slides and supports the arm support unit 120 of the y-axis driving unit, the x-axis linear guide 160 to guide the x-axis progression, and the x-axis driving the y-axis linear guide 130 to the x-axis. A drive motor (not shown) is provided.

Reference numeral 150 denotes a glass substrate alignment sensor in the y direction. The glass substrate is aligned in the y direction by detecting a corner of the glass substrate drawn out from the cassette and adjusting the moving distance of the y-axis driving unit. The glass substrate detection sensor is built into the arm. Therefore, the glass substrate alignment means 200 which will be described later is operated.

2 and 3 together, the upper portion of the connection member 210 is fixedly connected to the lower portion of the x-axis linear guide 130. The power transmission device 220 is installed below the connection member 210. The power transmission device 220 is rotatably connected to the outer periphery of the driven pulley 224 and the drive pulley 222. The axis of rotation (not shown) of the drive pulley 222 is rotated by a revirsible motor 226, so that the power transmission device 220 is rotatable in both directions.

Fixing members 230 are respectively provided on opposite sides of the power transmission device 220, and each of the fixing members 230 faces each other from above the connecting member 210 to move the fixing member 230. Accordingly, one end of the grip part 240 moving in the x-axis direction is installed to be fixed. According to the driving of the timing belt 220, the fixing member 230 and the grip part 240 move in a direction approaching or away from each other in the x-axis direction.

The grip part 240 includes a grip 242 in contact with the glass substrate. The grip 242 is formed of a plurality of grips spaced apart from each other on the surface of the grip portion 240 in contact with the glass substrate. The grip 242 is preferably not hardly worn, and also used is an engineering plastic such as PEEK (Poly Ether Ether Kethone), which is a harder material than a glass substrate.

Figure 4 is a schematic diagram for explaining the operation of the glass substrate alignment means 200 of the present invention, it was schematic in a plan view.

Referring to FIG. 4, the power transmission device 220 is wound around the outer periphery of the driven pulley 224 and the driving pulley 222, and the rotation shaft 222a of the driving pulley 222 is rotated by the reversible motor 226. . When the reversible motor 226 is rotated in one direction, for example, an arrow A direction, the power transmission device 220 is rotated so that the fixing member 230 and the grip part 240 are linearly moved toward each other.

Subsequently, when the reversible motor 226 is rotated in the direction opposite to the arrow A direction, the fixing member 230 and the grip portion 240 is linearly moved in a direction away from each other. Therefore, the grip part 240 may move in the x direction according to the rotation of the reversible motor 226.

Therefore, in the state where the grip portion 240 is opened, the arm 110 is driven to take out the glass substrate from the cassette. While pulling out the glass substrate, the glass substrate is fixed to the arm 110 by sucking air from the hole 112 formed in the arm 110 through the pneumatic line 122.

Subsequently, when the glass substrate sensor detects the glass substrate on the arm 110, the pneumatic line 122 is released to release the glass substrate on the arm 110. In this case, the glass substrate may be twisted or biased to one side on the arm 110.

Subsequently, the reversible motor 226 is rotated in the A direction so that the grip part 240 contacts both sides of the glass substrate. At this time, the reversible motor 226 is rotated by the length of the glass substrate in the x-axis direction (determined according to the size of the glass substrate used). In this case, when the glass substrate is biased or distorted to one side, the grip part 240 is continuously moved in a direction approaching each other, and eventually the grip 242 is supported while simultaneously contacting both sides of the glass substrate. At this time, the glass substrate is in a state in which the positions are symmetrically aligned with respect to the y-axis direction of the arm 110 on the arm 110.

Subsequently, the reversible motor 226 is rotated in the direction opposite to the A direction to transfer the glass substrate while the glass substrate is released, and the glass substrate is placed on a work table (not shown). At this time, since the glass substrate hardly moves in the process of transferring the glass substrate, the alignment state of the glass substrate is primarily maintained in the work table by the alignment device of the present invention.

As described above, according to the glass substrate aligning apparatus of the present invention, since the glass substrate can be moved to the working table in the state in which the glass substrate for the display panel is aligned, the recognition mark of the glass substrate is changed by the laser processing apparatus. It is easy to detect and automatically cut the electrodes formed on the edge of the glass substrate accurately and quickly.

Although the present invention has been described with reference to the embodiments with reference to the drawings, this is merely exemplary, it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined only by the appended claims.

Claims (6)

An arm on which a glass substrate is disposed; An arm support part supporting the arm and having a hollow structure; A y-axis driving motor for driving the arm support in the y-axis direction; a y axis linear guide slidably coupled with the arm support in a y axis direction; And Glass substrate alignment means for symmetrically aligning the glass substrate disposed on the arm in the x-axis direction with respect to the arm, having a pair of grips driven in a direction facing each other or away from each other simultaneously in the x-axis direction. Glass substrate alignment device of the laser electrode cutting device characterized in that it comprises; The method of claim 1, The glass substrate alignment means is: A connection member fixedly attached to the lower portion of the linear guide in the x-axis direction; A drive pulley and a fixed pulley installed to be spaced apart from each other under the connection member; A timing belt surrounding the outer circumference of the driving pulley and the fixed pulley; Fixing member for fixing the end of each grip portion to the portion facing each other in the timing belt; And The glass substrate aligning device of the laser electrode cutting device, characterized in that for rotating the rotating shaft of the drive pulley, and comprises a reversible motor: rotated in both directions. The method of claim 2, The glass substrate alignment device of the laser electrode cutting device, characterized in that the grip is made of a surface made of PEEK plastic on the surface in contact with the glass substrate. delete The method of claim 1, Glass substrate alignment device of the laser electrode cutting device, characterized in that the surface of the arm is formed with a Teflon coating. The method of claim 1, An x-axis linear guide slidably coupled to the bottom of the y-axis linear guide in the x-axis direction; And And an x-axis driving motor for driving the x-axis linear guide in the x-axis direction.

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