JP2008084847A - Exhaust hole processing device for display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an exhaust hole processing device for a plasma display panel capable of improving processing efficiency of exhaust hole processing, and of improving a work environment by executing non-contact type processing using a laser, allowing efficient transfer design of a substrate and minimization of a friction coefficient thereof, and providing facilitation of substrate alignment. <P>SOLUTION: This exhaust hole processing device for a plasma display panel is used for processing an exhaust hole on a substrate for a display panel, and includes: a substrate transfer unit for executing a transfer process to the substrate by dividing it into three stages by torque by magnetism; a processing stage unit minimizing a substrate friction coefficient in aligning the substrate, and allowing stable substrate processing by tight fixation of the substrate; a substrate alignment unit aligning the substrate at the center of a traveling direction on the processing stage unit for responding to a dimensional error of the substrate; and an exhaust hole processing unit executing non-contact type drilling by a laser to the substrate for processing the exhaust hole while adjusting the processing position and the height of the laser. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an exhaust hole processing apparatus for a display panel. More specifically, non-contact processing using a laser is performed to improve the processing efficiency of the exhaust hole, improve the working environment, and efficiently transfer the substrate. Further, the present invention relates to an exhaust hole processing apparatus for a display panel that enables a minimum coefficient of friction and provides ease of substrate alignment.

  Generally, a PDP (Plasma Display Panel) which is a flat display element is a panel which is a display part of a plasma display device, and a gas such as neon is sealed in a narrow gap between two thin glass substrates, and the inner surface of the glass substrate. Are provided with transparent electrodes arranged in a horizontal direction and a vertical direction.

  In the manufacturing process of the PDP, when two glass substrates are joined, the PDP includes a step of processing an exhaust hole in one of the glass substrates in advance in order to discharge the air remaining inside.

  In the processing of such an exhaust hole, mechanical drilling using diamond has been carried out conventionally, but this is a direct contact method with a glass substrate, so the processing is not precise and the glass is vibrated by vibration. There is a problem that the substrate is damaged, and a burr is formed in the processing portion of the exhaust hole, and the formation of such a burr acts as a factor of cracks and damage during the heat treatment performed in the manufacturing process of the PDP. There was a problem to do.

  In addition, since mechanical drilling is performed when the exhaust hole is formed, not only is glass dust generated and harmful to the work environment, there is a problem that the cleaning process must be performed. There was a problem that it was not easy to cope with the increase in size and the introduction of the multi-chamfer method.

  Therefore, the present invention has been made in view of the above-described problems, and the object of the present invention is to perform non-contact processing using a laser to improve the processing efficiency of exhaust hole processing and to improve the working environment. It is an object of the present invention to provide an exhaust hole processing apparatus for a display panel, which is improved, enables efficient transfer design of a substrate and minimization of a friction coefficient, and provides ease of substrate alignment.

  Another object of the present invention is to prevent damage to the substrate by non-contact type substrate processing, enable precision processing, and prevent the formation of burrs at the exhaust hole processing site. Another problem is to overcome the conventional problems that cause cracks or breakage.

  In order to achieve the above object, the present invention provides a substrate transfer unit for processing an exhaust hole in a display panel substrate in three stages by a rotational force of magnetism in an apparatus for processing an exhaust hole. A processing stage unit that minimizes the coefficient of substrate friction when aligning the substrate and enables stable substrate processing by tightly fixing the substrate; aligning the substrate on the processing stage unit in the center of the traveling direction; A configuration including a substrate alignment unit for dealing with a dimensional error; and an exhaust hole processing unit for processing the exhaust hole while performing non-contact drilling with a laser on the substrate and adjusting a laser processing position and height. This is a basic feature of the technical structure.

  As described above, according to the exhaust hole processing apparatus for a display panel according to the present invention, since non-contact processing using a laser is performed, the processing efficiency by exhaust hole processing can be greatly improved, and the friction coefficient of the substrate With the transfer design and alignment structure for minimizing the substrate, it is possible to exhibit ease and improved workability when transferring and aligning the substrate. Removal improves the working environment, enables precise machining, and prevents the occurrence of burrs at the exhaust hole machining site compared to existing mechanical contact drilling. In this case, there is a usefulness capable of blocking in advance a problem that a crack occurs or breaks.

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

  1 is a front view showing a display panel exhaust hole processing apparatus according to the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a left side view of FIG. 1, and FIG. 5 is a block diagram showing a machining stage unit according to the present invention, FIG. 6 is a block diagram showing a machining stage unit according to the present invention, and FIG. 7 is a diagram showing a basic configuration of an aligner and a stopper according to the present invention. 8 is a block diagram showing an exhaust hole machining unit in the present invention, and FIG. 9 is a block diagram showing a laser beam control relationship of the exhaust hole machining unit in the present invention.

  As shown in FIGS. 1 to 9, a display panel exhaust hole processing apparatus according to the present invention is a substrate transfer unit 100 for transferring and processing a substrate G, which is a material for a display panel, in three stages by the rotational force of magnetism. When aligning the substrate G, the processing stage unit 200 that minimizes the coefficient of friction of the substrate and enables stable substrate processing by tightly fixing the substrate, and the traveling direction of the substrate G on the processing stage unit 200 The substrate alignment unit 300 for aligning with the center of the substrate G and dealing with the dimensional error of the substrate G, and non-contact drilling with the laser to the substrate G, and processing the exhaust hole while adjusting the laser processing position and height And an exhaust hole machining unit 400.

  The substrate transfer unit 100 includes frames formed separately in a loading unit 111, a processing unit 112, and a discharge unit 113, and is arranged horizontally in a row, and the processing unit 112 linearly moves vertically up and down. 110, a plurality of shafts 120 connected to each frame forming the conveyor main body 110 in multiple rows at regular intervals and coupled with first magnetic bodies 121 for rotational power, and each shaft 120 rotates. A plurality of conveyor rollers 130 that are connected and spaced apart from each other, and a pulley 143 that has a second magnetic body 141 disposed below the first magnetic body 121 and is connected to the motor 142 via a belt. A power providing means 140 coupled to a motor connecting shaft 144 connected to the shaft 120 and providing magnetic power to the shaft 120; Including.

  The processing section 112 of the conveyor body 110 is configured to move up and down linearly by the operation of the cylinder C.

  The first magnetic body 121 and the second magnetic body 141 are arranged such that the magnetic poles are arranged obliquely, and the same magnetic pole is arranged at the upper and lower positions so as to be rotated by the repulsive force due to the action of pushing out each other.

  The processing stage unit 200 is fastened and fixed on a base, and is disposed on the processing portion 112 of the conveyor body 110. A plurality of roller insertion holes 211, vacuum suction holes 212, and alignment guide holes 213 are formed. A flat plate stage 210; a substrate suction portion 220 for tightly fixing the substrate G onto the flat plate stage 210 by vacuum suction through the vacuum suction hole 212; and a surface exposed on the upper surface of the flat plate stage 210. Processing of a large number of blow pads 230, which are main bodies having fine air holes for air blow, an air pressure supply unit 240 for supplying air pressure to the blow pads 230, and an exhaust hole of the substrate G located on the flat plate stage 210 And a suction part 250 for removing dust generated at times.

  At this time, the blow pad 230 is manufactured by injection molding of polyethylene (PE), and fine ventilation holes that cannot be visually confirmed are formed.

  The suction part 250 is connected to the upper and lower sides of the flat plate stage 210, sucks dust when the substrate is processed, and the upper side is connected to the exhaust hole processing unit 400.

  The substrate alignment unit 300 is disposed behind the flat plate stage 210, is coupled to a cylinder 312 so as to be vertically movable, and moves in the X-axis direction by operation control of a servo motor 311; A second aligner 320 disposed on both sides of the flat plate stage 210 and moved in the Y-axis direction by operation control of the servo motor 321 and a cylinder 331 disposed in front of the flat plate stage 210 and vertically movable. And a stopper 330 that regulates position movement of the substrate G to be transferred and moved in the traveling direction.

  At this time, as shown in FIG. 7, the first aligner 310, the second aligner 320, and the stopper 330 are commonly positioned above the vertical support S, and the bearing B is rotatably coupled to the substrate. An alignment roller R is provided to minimize the contact friction force and protect the substrate during alignment.

  Also, as shown in FIG. 3, a tension structure by fastening a spring 322 is applied to one side of the second aligner 320 to easily cope with dimensional errors of the substrate provided in various dimensions. Although not shown, it is preferable to apply a tension structure by spring fastening to the first aligner.

  The exhaust hole processing unit 400 is disposed on the flat plate stage 210 and adjusts the focus of the laser generated from the laser source 410 to generate a laser for exhaust hole processing on the substrate. A focus adjuster 420 for changing the height of the direction, X and Y mirrors 431 and 432 for reflecting the laser whose height is adjusted by the focus adjuster 420 to the substrate G side, and adjusting the position of the X and Y mirrors X and Y galvanometers 441 and 442, a focus lens 450 for focusing the laser beam reflected by the X and Y mirrors on the substrate side, a driver 460 for precisely driving the X and Y galvanometers, and the driver A control unit 470 for controlling When the exhaust hole machining by chromatography, including an air supply portion 480 for preventing the coagulation of the substrate G in cooling effect.

  At this time, the exhaust hole machining unit 400 may be provided with a large number of units or a single unit, and moved in the X-axis, Y-axis, and Z-axis directions by a servo motor (not shown). Can be configured to be precisely controlled.

  As the laser source 410, it is desirable to use an ultraviolet laser that improves spatial resolution by a short wavelength that enables high energy photons and a sharp focus that have been removed of materials that do not cause thermal damage, especially a very fast maximum. The use of a Q-switching group UV laser with high power and high pulse energy up to 10 W at 355 nm improves the efficiency of exhaust hole processing and enables precise processing.

  The ultraviolet laser is the most desirable example of a laser source, and is not particularly limited to this. Any laser source that allows easy exhaust hole processing and precise processing is applicable. I will.

  The focus adjuster (BET; Beam Extender) 420 is a variable adjustment method (Variable BET) device that adjusts the focus of the laser beam in the Z-axis direction (high and low), and has an advantage that a fast focusing movement is possible.

  Furthermore, in the present invention, the focus adjuster 420 may be eliminated, and the focus lens 450 may be moved up and down in the Z-axis direction by driving a motor (not shown) to adjust the laser focus height. it can.

  The substrate G applied to the processing apparatus of the present invention is mainly made of glass.

  The operation and operation of the exhaust hole processing apparatus for a display panel according to the present invention having such a configuration will be described as follows.

  The loading unit 111, the processing unit 112, and the discharge unit 113 of the conveyor main body 110 are in a horizontal state, and the power supply unit 140 is operated to rotate the conveyor roller 130.

  At this time, the processing unit 112 rises from the lowered state and is positioned on the same plane as the loading unit 111 and the discharge unit 113, and is applied to the shaft 120 by the rotational force of the second magnetic body 141 coupled on the motor connection shaft 144. The combined first magnetic body 121 is rotated by forming the corresponding magnetism, and the shaft 120 and the conveyor roller 130 are rotated.

  The first aligner 310 located behind the flat plate stage 210 performs an initial lowering operation so that the substrate G is not loaded in order to load and transfer the substrate G to the conveyor body 110 side. The stopper 330 located at the position protrudes upward and moves upward so as to restrict the progress of the transferred substrate.

  Due to the rotational force of the conveyor roller 130, the substrate G in contact therewith is transferred to the processing unit 112 through the loading unit 111, enters the flat plate stage 210, and is stopped by the stopper 330 that has moved up.

  If the progress of the substrate G is regulated by the stopper 330, the processing unit 112 in the ascending operation state is lowered to place the substrate on the flat plate stage 210, and at the same time, air is supplied from the air pressure supply unit 240 to the blow pad 230, The substrate located on the flat plate stage 210 is levitated by the air pressure supplied onto the pad 230.

  If such floating of the substrate G is used, the substrate position can be easily adjusted when the substrates are aligned, and the scratch can be prevented by minimizing the coefficient of friction of the substrate due to the substrate position adjustment. Since air is supplied through the blow pad 230 having fine ventilation holes, not only noise generation is eliminated, but air pressure adjustment is facilitated, and excessive air consumption can be prevented. Provides benefits.

  While the substrate G is floating, the first aligner 310 moves up and moves in the X-axis direction by the operation of the servo motor 311 to push the substrate in the direction of the stopper 330 while cooperating with the stopper in the X-axis direction. The positions are aligned, and the second aligner 320 moves in the Y-axis direction on both sides to push the substrate to the center in the traveling direction and align it in the center.

  At this time, one of the first aligner 310 and the second aligner 320 has a tension structure, and aligns the substrate in the center while corresponding to the dimensional error of the substrate.

  When the center alignment of the substrate G is completed, the air supplied to the blow pad 230 side is shut off, the substrate is placed on the upper surface of the flat plate stage 210, and the substrate is vacuum-sucked by the operation of the substrate suction unit 220. A substrate is adhered and fixed to the upper surface of 210. At this time, the suction part 250 is operated.

  The exhaust hole processing unit 400 processes the exhaust hole on the plane of the substrate G while adjusting the processing position and height of the laser.

  At this time, the laser processing position adjustment is performed by the X and Y galvanometers 441 and 442 connected to the X and Y mirrors 431 and 432, and is precisely controlled by the driver 460 and the control unit 470, and the laser height adjustment is variable. This is performed quickly by the BET type focus adjuster 420, and corresponds to the processing depth of the substrate G in exhaust hole processing.

  Here, on the two-dimensional plane of the substrate that contacts the laser, the contact portion is opened while the molecular structure is destroyed and the exhaust hole is processed, and the suction part 250 absorbs fine dust generated during processing on the upper and lower sides of the substrate. Will be removed.

  When the exhaust hole processing for the substrate G is completed, the first aligner 310 and the second aligner 320 used for substrate alignment are returned to their original positions, the substrate suction unit 220 and the suction unit 250 are turned off, and the stopper 330 is lowered and the lowered processing portion 112 of the conveyor main body 110 is raised, and the substrate with the exhaust holes processed is discharged through the discharge portion 113 of the conveyor main body 110.

  Here, when the processing unit 112 constituting the conveyor body 110 is in the lowered state, the power providing unit 140 is turned off, and when the processing unit 112 is in the raised state, the power providing unit 140 is turned on.

  Meanwhile, the exhaust hole processing apparatus for a display panel according to the present invention has been described based on the above-described specific embodiments and the accompanying drawings. However, the present invention is not particularly limited thereto, and the claimed invention of the present invention. Various changes and modifications in the technical field made within the similar category of the technical idea belong to the present invention.

  The present invention performs non-contact processing using a laser to improve the processing efficiency of the exhaust hole and improve the working environment, enable an efficient transfer design of the substrate and a minimum coefficient of friction. The present invention can be applied to an exhaust hole processing apparatus for a display panel that provides ease.

It is a front view which shows the exhaust hole processing apparatus for display panels of this invention. It is a top view of FIG. It is a left view of FIG. It is a block diagram which shows a board | substrate transfer unit in this invention. It is a block diagram which shows the processing stage unit in this invention. It is a block block diagram which shows the processing stage unit of this invention. It is a figure shown in order to demonstrate the basic composition of an aligner and a stopper in this invention. It is a block diagram which shows an exhaust hole processing unit in this invention. It is a block block diagram which shows the laser beam control relationship of an exhaust hole processing unit in this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Substrate transfer unit 110 Conveyor body 111 Loading part 112 Processing part 113 Discharge part 120 Shaft 121 1st magnetic body 130 Conveyor roller 140 Power supply means 141 2nd magnetic body 200 Processing stage unit 210 Flat plate stage 220 Substrate adsorption part 230 Blow pad 240 Air pressure supply unit 250 Suction unit 300 Substrate alignment unit 310 First alignment unit 320 Second alignment unit 330 Stopper 400 Exhaust hole processing unit 410 Laser source 420 Focus adjuster 431 X mirror 432 Y mirror 441 X galvanometer 442 Y galvanometer 450 Focus lens

Claims (8)

In an apparatus for processing an exhaust hole in a display panel substrate,
A substrate transfer unit for transferring and processing the substrate in three stages by the rotational force of magnetism;
A processing stage unit that minimizes the coefficient of friction of the substrate when aligning the substrates and enables stable substrate processing by tightly fixing the substrate;
A substrate alignment unit for aligning the substrate on the processing stage unit in the center in the direction of travel, and for accommodating a dimensional error of the substrate;
An exhaust hole processing unit for performing non-contact drilling with a laser on the substrate and processing an exhaust hole while adjusting a laser processing position and height;
An exhaust hole processing apparatus for a display panel, comprising: The substrate transfer unit includes:
A conveyor body having frames defined in a loading section, a processing section, and a discharge section, arranged horizontally in a row, and the processing section linearly moves vertically up and down;
A plurality of shafts arranged in multiple rows at regular intervals and connected to each frame constituting the conveyor body, and coupled with a first magnetic body for rotational power;
A conveyor roller rotatably coupled to each of the shafts, provided in a number, and spaced apart;
The second magnetic body is disposed below the first magnetic body, and is coupled to a motor coupling shaft coupled to a pulley coupled to the motor via a belt, and provides power for rotating the shaft by magnetism. Providing means;
The exhaust hole processing apparatus for a display panel according to claim 1, comprising: The processing stage unit is
A flat plate stage fixedly arranged at the upper center of the substrate transfer unit and having a large number of roller insertion holes, vacuum suction holes and alignment guide holes;
A substrate suction portion for tightly fixing the substrate onto the flat plate stage by vacuum suction through the vacuum suction hole;
A number of blow pads which are provided on the upper surface of the flat plate stage so that the surface thereof is exposed and which have a fine air hole for air blowing;
An air pressure supply unit for supplying air pressure to the blow pad;
A suction part for removing dust generated during exhaust hole processing of the substrate located on the flat plate stage;
The exhaust hole processing apparatus for a display panel according to claim 1, comprising: The substrate alignment unit includes:
A first aligner which is disposed behind the processing stage unit, has a cylinder coupling so as to be vertically movable, and moves in the X-axis direction by operation control of a servo motor;
A second aligner disposed on both sides of the processing stage unit and moved in the Y-axis direction by operation control of a servo motor;
A stopper which is disposed in front of the processing stage unit and which is coupled to a cylinder so as to be vertically movable, and restricts the movement of the substrate to be transferred relative to the traveling direction;
The exhaust hole processing apparatus for a display panel according to claim 1, comprising: The exhaust hole processing unit is
A laser source for generating a laser for exhaust hole processing on the substrate;
A first focus lens for primarily adjusting the focus of the laser generated from the laser source;
X and Y mirrors that reflect the laser primarily focused by the first focus lens to the substrate side;
An X and Y galvanometer for adjusting the position of the X and Y mirrors;
A second focus lens for secondarily adjusting the focus of the laser reflected by the X and Y mirrors;
A driver for precisely driving the X and Y galvanometers;
A control unit for controlling the driver;
An air supply unit for preventing solidification of the substrate by a cooling action during substrate processing by the laser;
The exhaust hole processing apparatus for a display panel according to claim 1, comprising:   The first aligner, the second aligner, and the stopper are respectively positioned on the vertical support, and are rotatably coupled to a bearing to minimize a contact friction force and protect the substrate when the substrates are aligned. The exhaust hole processing apparatus for a display panel according to claim 4, further comprising an alignment roller.   5. The display according to claim 4, wherein the first and second aligners are configured to have a tension structure by spring fastening, and correspond to dimensional errors of a substrate provided in various sizes. Exhaust hole processing equipment for panels.   6. The display panel exhaust hole processing apparatus according to claim 5, wherein the laser source uses an ultraviolet laser.

Images