KR20060076049A - Method and apparatus for fabricating liquid crystal display panel - Google Patents

Abstract

The present invention provides a polishing machine, a panel whose side is polished in contact with the polishing machine, a drive shaft for moving the panel to be polished in contact with the polishing machine, and the panel is seated and fastened to an upper portion of the drive shaft to be mounted according to the movement of the drive shaft. The present invention provides a manufacturing apparatus of a liquid crystal display panel having a plurality of support tables for supporting a panel while moving in contact with the polishing machine. To facilitate handling and storage.

Description

Apparatus and method for manufacturing a liquid crystal display panel {Method And Apparatus For Fabricating Liquid Crystal Display Panel}             

1 is a perspective view for explaining a general liquid crystal display element.

2A and 2B are diagrams for explaining a table of a general equipment for polishing a liquid crystal display panel.

3A to 3C are views for explaining an apparatus for manufacturing a liquid crystal display panel according to a first embodiment of the present invention.

4A to 4B are views for explaining an apparatus for manufacturing a liquid crystal display panel according to a second preferred embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

11, 17: polarizer 12: upper glass substrate

13 color filter 14 common electrode

15 liquid crystal layer 16 lower glass substrate

18: gate line 19: data line

20, TFT: thin film transistor 21: pixel electrode                 

22: color filter substrate 30, 300: table

40, 400: drive shaft 50, 500: panel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing apparatus and a method of manufacturing a liquid crystal display panel, and more particularly, to manufacturing a liquid crystal display panel which makes it easy for a worker to handle or store a polishing table for seating a panel when polishing a side surface of the liquid crystal display panel. An apparatus and a method thereof are provided.

In today's information society, display elements are more important than ever as visual information transfer media. Cathode ray tubes or cathode ray tubes, which are currently mainstream, have problems with weight and volume. Many kinds of flat panel displays have been developed to overcome the limitations of the cathode ray tube.

The flat panel display device includes a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP) and an electroluminescence (EL). Most of these are commercially available and commercially available.                         

Liquid crystal display devices are able to meet the trend of light and short and short of electronic products, and mass production is improving, and thus, cathode ray tubes are rapidly replaced in many applications.

In particular, an active matrix type liquid crystal display device that drives a liquid crystal cell using a thin film transistor (hereinafter referred to as "TFT") has the advantages of excellent image quality and low power consumption, and secures the latest mass production technology. As a result of research and development, it is rapidly developing into larger size and higher resolution.

1 is a perspective view illustrating a general liquid crystal display device.

Referring to FIG. 1, in a general active matrix type liquid crystal display device, a color filter substrate 22 and a TFT array substrate 23 are bonded to each other with a liquid crystal layer 15 interposed therebetween. 1 illustrates a portion of an effective screen of the liquid crystal display panel.

The color filter 13 and the common electrode 14 are formed on the rear surface of the upper glass substrate 12 on the color filter substrate 22. The polarizing plate 11 is attached on the front surface of the upper glass substrate 12. In the color filter 13, color filter layers of red (R), green (G), and blue (B) colors are disposed to transmit light of a specific wavelength band, thereby enabling color display. A black matrix (not shown) is formed between the color filters 13 of adjacent colors.

In the TFT array substrate 23, the data lines 19 and the gate lines 18 cross each other on the front surface of the lower glass substrate 16, and TFTs 20 are formed at the intersections thereof. In addition, a pixel electrode 21 is formed in a cell region between the data line 19 and the gate line 18 on the front surface of the lower glass substrate 16. The TFT 20 drives the pixel electrode 21 by switching the data transfer path between the data line 19 and the pixel electrode 21 in response to the scanning signal from the gate line 18. The polarizing plate 17 is attached to the rear surface of the TFT array substrate 23.

The liquid crystal layer 15 adjusts the amount of light transmitted through the TFT substrate 23 in response to the electric field applied thereto.

The polarizers 11 and 17 attached to the color filter substrate 22 and the TFT substrate 23 transmit light polarized in either direction, and their polarization directions when the liquid crystal 15 is in the 90 ° TN mode. Are orthogonal to each other.

An alignment film (not shown) is formed on the liquid crystal facing surfaces of the color filter substrate 22 and the array TFT substrate 23.

A manufacturing process for manufacturing a liquid crystal display panel is divided into a substrate cleaning, a substrate patterning process, an alignment film forming / rubbing process, a substrate bonding / liquid crystal injection process, a mounting process, an inspection process, a repair process, and the like.

The substrate cleaning process removes foreign substances contaminated on the surface of the substrate of the liquid crystal display with a cleaning liquid.

The substrate patterning process is divided into a patterning process of a color filter substrate and a patterning process of a TFT array substrate.

In the alignment film formation / rubbing process, an alignment film is applied to each of the color filter substrate and the TFT array substrate, and the alignment film is rubbed with a rubbing cloth or the like.

In the substrate bonding / liquid crystal injection process, a color filter substrate and a TFT array substrate are bonded together using a sealant, a liquid crystal and a spacer are injected through the liquid crystal injection hole, and then the liquid crystal injection hole is sealed.

In the mounting process, a tape carrier package (hereinafter referred to as "TCP") in which integrated circuits such as a gate drive integrated circuit and a data drive integrated circuit are mounted is connected to a pad portion on a substrate. Such a drive integrated circuit may be directly mounted on a substrate by a chip on glass (hereinafter referred to as "COG") method in addition to the tape automated bonding method using the aforementioned TCP.

The inspection process includes an electrical inspection performed after signal wiring such as data lines and gate lines and pixel electrodes are formed on the TFT array substrate, and an electrical inspection and a visual inspection performed after the substrate bonding / liquid crystal injection process. In particular, the electrical inspection process of the signal wiring and the pixel electrode of the TFT array substrate prior to the bonding of the substrate is of great importance in that the defect rate and disposal can be reduced, and the defective substrate in a relatively repairable state can be detected early. .

The repair process restores the substrate that is determined to be repairable by the inspection process. On the other hand, substrates that cannot be repaired in the inspection process are discarded.

The panel is cut to a predetermined size after the substrate bonding / liquid crystal injection process is completed in the manufacturing process of the liquid crystal display panel. In order to prevent breakage of the cut panel, after performing a polishing operation for polishing the side surface, a mounting process, which is a next process, is performed.                         

The polishing equipment used for the polishing operation includes a table for seating the panel, a drive shaft engaged with the table so that the side surface of the panel contacts the polished stone for polishing, and a main body for applying the driving force to the drive shaft to move the drive shaft.

2A and 2B are diagrams for explaining a table of a general liquid crystal display panel polishing equipment.

As shown in FIG. 2A, the table 30 on which the panel is seated and the drive shaft 40 for moving the table 30 are bolted to each other.

 The table supports the panel so that the panel can be ground by abrasive stone (not shown) and at the same time the panel is not broken by the pressure applied from the abrasive stone.

Then, the panel is mounted on the flat upper surface of the table 30 coupled to the drive shaft 40.

As shown in FIG. 2B, when the panel 50 is seated on the upper surface of the table 30, the panel is seated on the table in a state where the driving shaft and the table are coupled to each other.

At this time, the size of the table 30 is formed to be smaller than the size of the panel 50 by a predetermined size (about 6mm), so that the area where the panel 50 can be polished by the abrasive stone is formed.

The method of grinding the side surface of the panel 50 will be described for a while. The table 30 is coupled to the drive shaft 40, and the panel 50 is seated on the upper surface of the table 30. Then, power is applied to the main body to position the abrasive stone according to the area size of the panel.

The main body performs linear motion of the drive shaft in accordance with a predetermined program so that the panel 50 performs linear motion between the abrasive stones. Thus, the side surface of the panel 50 is polished in contact with the abrasive stone.

However, since the area size of the panel 50 is gradually becoming larger today, the size of the table 30 on which the panel 50 is seated in the polishing equipment must also be gradually increased.

Therefore, as the area of the panel 50 increases in size, the size of the table 30 increases in size, resulting in a problem in that the table 30 is not easily handled or managed.

That is, the side of the panel 50 should be polished while the table 30 is mounted / detached according to the area of the panel 50 and replaced with the table 30 corresponding to the area of the panel 50. As the size increases, the weight also increases, making it difficult for an operator to handle / store the table 30.

Accordingly, it is an object of the present invention to provide an apparatus and method for manufacturing a liquid crystal display panel that allow an operator to easily handle or store a table of polishing equipment for polishing the side surface of the panel among equipment for manufacturing the liquid crystal display panel.

In order to achieve the above object, an apparatus for manufacturing a liquid crystal display panel according to an aspect of the present invention includes a polishing machine, a panel whose side is polished in contact with the polishing machine, and a drive shaft that moves the panel to be polished in contact with the polishing machine. And a plurality of support tables for seating the panel and fastening the upper portion of the driving shaft to support the panel while moving the panel in contact with the polishing machine according to the movement of the driving shaft.

Each support table of the apparatus for manufacturing a liquid crystal display panel according to the present invention includes a first plate bolted to a driving shaft and provided with a hole corresponding to a bolt protruding from the driving shaft, the first plate being bolted together, and a panel to be seated. A 2nd plate is provided. The manufacturing apparatus of the liquid crystal display panel shown.

Each support table according to the present invention is characterized in that the first plate and the second plate are coupled in a step shape, and at least one plate area of the first plate and the second plate is changed according to the area of the panel to be seated. .

On the other hand, each support table according to the present invention, a plurality of X-axis support table fastened to the drive shaft opposite to one axis direction of the panel to be seated, and fastened to the drive shaft opposite to the other axis direction in the direction perpendicular to the one axis direction of the panel And a plurality of Y-axis support tables.

In addition, the apparatus for manufacturing a liquid crystal display panel according to the present invention further includes a main body that provides driving force to the drive shaft in accordance with a predetermined program.

In addition, the drive shaft according to the invention is characterized in that the linear or rotational motion corresponding to the driving force provided from the main body.

According to another aspect of the present invention, there is provided a method of manufacturing a liquid crystal display panel, the method comprising: fastening a plurality of support tables corresponding to an area size of a panel whose side is polished by abrasive stones on an upper portion of a drive shaft; Seating, positioning the abrasive stone on the side of the panel, and polishing the side of the panel by reciprocating the panel in a uniaxial direction.

In addition, the manufacturing method of the liquid crystal display panel according to the present invention includes the steps of reciprocating the drive shaft in one axis direction, separating the abrasive stone from the panel, rotating each support table in a right angle direction, and rotating each support table Positioning the abrasive stone on the panel seated on, and polishing the other side of the panel by reciprocating the panel in the other axis direction.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, with reference to Figures 3 and 4 attached to a preferred embodiment of the present invention will be described in detail.

3A to 3C are diagrams for describing an apparatus for manufacturing a liquid crystal display panel according to a first exemplary embodiment of the present invention.

Referring to FIG. 3A, in the polishing apparatus according to the present invention, a plurality of support tables 300 are coupled to an upper portion of the driving shaft 400. At this time, the plurality of support tables 300 are bolted to the upper surface of the drive shaft 400, respectively.

In addition, each of the support tables 300 is provided with a plurality of holes 310 to which a plurality of plates are coupled in a step shape and to insert the bolt 410 of the drive shaft on one side of the lower plate.

Each of the support tables 300 penetrates the bolts 410 protruding from the upper portion of the drive shaft 400 through the holes 310, and the worker couples the nuts to the bolts penetrated through the support tables 300. Each support table 300 is fixedly coupled to the drive shaft 400.

The upper plate of each support table 300 is a support surface for supporting the panel to be seated, the upper plate is preferably formed to be flat in order to contact with the panel to provide maximum support.

At this time, it is preferable that the area of the upper plate of each support table 300 is set so that the panel can provide a support force that does not break when the panel is polished by abrasive stone (not shown).

3B is a view illustrating a panel seated on an apparatus for manufacturing a liquid crystal display panel according to a first embodiment of the present invention, wherein each support table 300 is bolted to an upper portion of the drive shaft 400 so that the support table 300 faces in one axial direction. The panel 500 is seated on the upper plate of each support table 300.

In addition, the drive shaft 400 reciprocates each support table in one axial direction according to a driving force provided from a main body (not shown) of the polishing equipment, and works the panel 500 mounted on each support table 300. The side is polished by the abrasive stone while reciprocating in axial direction.

Such, each support table 300 is preferably used according to the size of the panel 500.

FIG. 3C illustrates each support table according to the present invention. After fastening each support table 300 having a different size of the upper plate according to the size of the panel 500 to the drive shaft 400, It is desirable to polish both sides. In addition, according to the size of the panel 500, each of the support tables 300 having the same size of the upper plate and different sizes of the lower plate may be used by fastening with the driving shaft 400.

As shown in FIG. 3C, when the size of the panel 500 is increased by a predetermined size (a), the support table 300 having the size of the upper plate as large as the predetermined size (a) is fastened to the driving shaft 400. It is preferable to connect both side surfaces of the panel 500 to abrasive stone for polishing.

On the other hand, when the size of the panel 500 becomes a predetermined size (a), the size of the upper plate is the same, the lower side of the panel is fastened to the drive shaft 400 by a support table that is as large as the predetermined size (a) to the panel Both sides of the 500 may be connected to the abrasive stone for polishing.

The polishing of the panel 500 in the polishing equipment is performed after the fastening of the plurality of support tables 300 corresponding to the size of the panel 500 seated on the drive shaft 400. The panel 500 is seated on the upper side.

Then, the abrasive stone is located on both sides of the panel 500, the main body provides a driving force to the drive shaft 400 in accordance with a predetermined program, the drive shaft 400 in one axis direction in accordance with the provided driving force 300 ) Reciprocate.

Therefore, both side surfaces of the panel 500 mounted on the support table 300 are polished in contact with the abrasive stone. At this time, the upper surface of each support table 300 provides a support force to the panel 500 so that the panel 500 can be polished in contact with the abrasive stone.

4A to 4B are diagrams for describing an apparatus for manufacturing a liquid crystal display panel according to a second exemplary embodiment of the present invention.

As shown in FIG. 4, in the polishing apparatus according to the second embodiment of the present invention, a plurality of support tables 301 are fastened to an upper portion of the driving shaft 400. At this time, the plurality of support tables 301 are bolted to the upper surface of the drive shaft 400, respectively.

Each of the support tables 301 has a plurality of holes coupled to each other in a stair shape, and includes a plurality of holes for inserting bolts of the drive shaft on one side of the lower plate, and the drive shafts through the holes of the respective support tables 301. Penetration of the bolt of 400, and fastening the nut to the bolt, and fixed to each support table 300 on the drive shaft (400).

The upper plate of each support table 300 is a support surface for supporting the panel to be seated, the upper plate is preferably formed to be flat in order to contact with the panel to provide maximum support.

At this time, it is preferable that the area of the upper plate of each support table 300 is set so that the panel can provide a support force that does not break when the panel is polished by abrasive stone (not shown).

That is, the plurality of support tables 301-1 and 301-2 are fastened to face each other in the X axis direction, and the plurality of support tables 301-3 and 301-4 are fastened to face the Y axis in both directions.

Each of the support tables 301 is preferably polished on both sides of the panel 500 after fastening each support table 300 having a different size of the upper plate according to the size of the panel 500 to the drive shaft 400. Do. In addition, according to the size of the panel 500, each of the support tables 300 having the same size of the upper plate and different sizes of the lower plate may be used by fastening with the driving shaft 400.

Meanwhile, as illustrated, the lengths of the upper plates of the plurality of support tables 301 facing each other in the axial direction of the X axis or the Y axis are different from the lengths of the upper plates of the plurality of support tables 301 facing the other axis direction. It is desirable to.

That is, since the horizontal length and the vertical length of the panel 500 seated on each support table 301 are different from each other, the lengths of the upper plates of the plurality of support tables 301 facing each other in the axial direction and in the other axis direction are different. By varying the length of the upper plate of the support table 301, the upper surface of each support table 301 is brought into contact with the four sides of the panel 500 so that the supporting force is provided on the four sides of the panel 500. .

The polishing of the panel 500 in the polishing equipment includes fastening four support tables 300 corresponding to the size of the panel 500 seated on the drive shaft 400 to face the X and Y axes. Thereafter, the panel 500 is seated on the upper surface of each support table 400.

Then, the abrasive stone is located on both sides of the panel 500, the main body provides a driving force to the drive shaft 400 in accordance with a predetermined program, the drive shaft 400 in one axis direction in accordance with the provided driving force 300 After reciprocating), the abrasive stone is spaced apart on the panel 500.

Subsequently, the main body rotates the driving shaft 400 about 90 degrees and then positions the abrasive stone on the panel 500. The main body provides a driving force to the drive shaft 400, and the drive shaft 400 reciprocates the support table in the direction of the other axis so that the four sides of the panel 500 are in contact with the abrasive stone and polished.

As described above, the apparatus for manufacturing a liquid crystal display panel according to the present invention divides the table on which the panel is seated when polishing the side surface of the panel, and replaces the table according to the size of the panel, thereby allowing the operator to replace the polishing table. It is easy to handle and store.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (11)

Grinding machine, A panel whose side is polished in contact with the polishing machine, A drive shaft configured to move the panel in contact with the polishing machine to be polished; And a plurality of support tables on which the panel is seated and fastened to an upper portion of the driving shaft to support the panel while moving the panel in contact with the polishing machine according to the movement of the driving shaft. The method of claim 1, The respective support table, And a bolt fastened to the driving shaft. The method of claim 1, The respective support table, A first plate bolted to a hole having a hole corresponding to the bolt protruding from the drive shaft; And a second plate supporting the seated panel. The method of claim 3, wherein The respective support table, And the first plate and the second plate are joined in a staircase shape. The method of claim 3, wherein The respective support table, And an area of at least one of the first and second plates varies according to the area of the panel to be seated. The method of claim 1, The respective support table, A plurality of X-axis support tables fastened to the drive shaft so as to face one axis direction of the seated panel; And a plurality of Y-axis support tables fastened to the drive shaft so as to face the other axis direction in a direction perpendicular to the one axis direction of the panel. The method of claim 1, And a main body for providing a driving force to the driving shaft in accordance with a predetermined program. The method of claim 7, wherein The drive shaft, And a linear or rotary motion corresponding to the driving force provided from the main body. The method of claim 1, The grinder, And an abrasive stone for polishing the panel contacted by the rotational motion. Fastening a plurality of support tables corresponding to the area size of the panel whose side is polished by the abrasive stone on the upper part of the drive shaft; Mounting a panel on each support table; Positioning the abrasive stone on the side of the panel; And polishing the side surface of the panel by reciprocating the panel in a uniaxial direction. The method of claim 10, Reciprocating the drive shaft in one axis direction, and separating the abrasive stone from the panel; Rotating the support tables in a right angle direction; Positioning the abrasive stone on a panel seated on the rotated respective support tables; And polishing the other side of the panel by reciprocating the panel in another axis direction.

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