KR100961829B1 - Tray for lcd conveyance and manufacturing method thereof - Google Patents

Abstract

The present invention provides a tray for manufacturing a tray using foamed resin to transport a liquid crystal panel, an array substrate, etc. in a liquid crystal display manufacturing process, thereby preventing damage to the liquid crystal cell or glass and reducing the occurrence of foreign substances. And a method of manufacturing the same. According to the present invention, a plurality of front protrusions having a step with the cell seating portion are formed in a matrix form on a tray plate on which a cell seating portion for transporting liquid crystal cells is formed, and on the tray plate being stacked on the back surface of the trayboard. Characterized in that the front projection and a plurality of rear projections for maintaining a constant gap is formed.

Here, the front protrusion is formed with one or more grooves in the central region for easy detachment of the liquid crystal cell seated in the cell seating portion, the material of the tray consisting of the tray plate, the front protrusion and the rear protrusion is foamable Resin, wherein the expandable resin is an EPE-based resin or an EPP-based resin.

Liquid Crystal Cell, Transport, Tray, Effervescent, EPP, Uneven

Description

Tray for transporting liquid crystal display and its manufacturing method {TRAY FOR LCD CONVEYANCE AND MANUFACTURING METHOD THEREOF}

1 is a view showing a structure of a tray for transporting a liquid crystal display according to the prior art.

2 is a view showing the structure of the cell seating portion in the tray of FIG.

Figure 3a is a front view of the tray for transporting the liquid crystal display according to the present invention.

Figure 3b is a rear view of the tray for transporting the liquid crystal display according to the present invention.

Figure 4 is a view showing the cell seating portion of the liquid crystal display transport tray according to the present invention.

5 is a view showing a stacked state of the tray for transporting the liquid crystal display according to the present invention.

Figure 6 shows the upper and lower gap structure of the trays stacked in accordance with the present invention.

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

100: tray 101: tray plate

110: seating portion 120: front projection

121: groove 150: rear projection

200: liquid crystal cell

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray for transporting a liquid crystal display device and a method for manufacturing the same. More specifically, by manufacturing a tray using a foamed resin, damage to a liquid crystal cell or glass when transporting a liquid crystal panel, a semifinished liquid crystal display device, or the like can be avoided. The present invention relates to a tray for transporting a liquid crystal display device and to a method of manufacturing the same, which can prevent the occurrence of foreign substances.

As the modern society changes into an information society, the importance of the liquid crystal display device, which is one of the information display devices, is gradually increasing. The CRT (Cathode Ray Tube), which is widely used so far, has many advantages in terms of performance and cost, but has many disadvantages in terms of miniaturization or portability.

On the other hand, the LCD is somewhat expensive in terms of price, but has been noted as an alternative means of overcoming the disadvantages of the CRT because it has advantages such as miniaturization, light weight, thinness, and low power consumption.

The 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 red, green, and blue color filter layers are formed are bonded to each other with a liquid crystal interposed therebetween.

The lower substrate and the upper substrate of the liquid crystal display device are manufactured by repeatedly depositing and applying a metal film, a semiconductor, an insulating film, or the like on a glass substrate, followed by several mask processes.                         

As described above, when the lower substrate and the upper substrate are completed, a liquid crystal cell (CELL) process of bonding two substrates with a liquid crystal layer interposed therebetween is performed. In the case of a liquid crystal display device for a monitor or a notebook, On the upper substrate, active regions of two, four, six, and the like liquid crystal panels are formed on one glass substrate.

In particular, recently, a window of a mobile phone is implemented as a liquid crystal display device. In the case of a liquid crystal display device used in a mobile phone, dozens or more liquid crystal cells are manufactured on one bonded substrate.

As described above, the cell process is performed by cutting the substrate according to the size of the liquid crystal panel, injecting the liquid crystal, and attaching the gate PCB and the data PCB to the pad region of the liquid crystal panel.

In the case of a liquid crystal display device for a mobile phone, dozens of liquid crystal cells are produced by cutting one liquid crystal cell bonded in a cell process, and a transport tray is used to transport a large number of liquid crystal cells to a next process without damage.

1 is a view showing the structure of a tray for transporting a liquid crystal display according to the prior art.

As shown in FIG. 1, when liquid crystal cells used in a mobile phone are manufactured, the liquid crystal cells are transported to a liquid crystal injection process or a PCB module process. In this case, a tray manufactured by vacuum forming is used to transport the liquid crystal cells.

The tray 10 for transporting the liquid crystal display device is considered by placing a synthetic resin sheet on a fully automatic vacuum molding machine in which a mold suitable for the size of a liquid crystal cell is set, and applying heat and pressure.

When the sheet placed on the mold is fluidized by heat, the prefabricated plug is pressed on the synthetic resin sheet.

When the plug is pressed, a vacuum is applied to complete a tray having the same shape as the mold shape.

In the structure of the tray 10 manufactured by the above process, the mounting parts 11 for storing the liquid crystal cells are first formed in a matrix form, and the center of the mounting part 11 on which the liquid crystal cells are mounted is a mold. It has a recessed structure.

In addition, grooves 13 are formed around the edges of the tray 10 so that the trays 10 do not slip when stacked or transported, and may be stacked with other trays.

FIG. 2 is a view illustrating a structure of a cell seating unit in the tray of FIG. 1.

As shown in FIG. 2, the plane and side surfaces of the seating portion formed in the tray are illustrated.

In the center of the seating portion 11, two recessed grooves 11a and 11b are formed, so that the liquid crystal cell can be safely placed. When the mounting portion 11 is cut based on a horizontal reference line A-A ', the outer periphery of the center groove of the mounting portion 11 has a structure having a constant step.

This prevents the liquid crystal cell lying on the seating portion 11 from being separated to the outside.

In addition, when B-B 'is formed by vertically cutting the center of the recessed grooves 11a and 11b, a jaw is formed at the center thereof, and the liquid crystal cell lying in the grooves 11a and 11b is separated from the adjacent liquid crystal cell region. prevent.

C-C 'which vertically cuts the recessed groove 11b has a structure having a step lower than a circumferential side so that the liquid crystal cell can be safely placed.

In addition, when loading the tray by the step between the seating portion 11 and the outer circumference, the upper tray surface does not directly contact the liquid crystal cell, thereby protecting the liquid crystal cell.

However, the tray for transporting a liquid crystal display device having the structure as described above has a disadvantage that the thickness of the tray is very thin because the synthetic resin in the form of a sheet is formed by vacuum forming.

As such, the thin tray does not adequately absorb external shocks during transportation, resulting in a problem that the liquid crystal cells mounted in the tray seating portion are damaged.

In addition, the irregularities formed on the surface of the tray is a structure in which the synthetic resin sheet is stamped out by heat and mold, so that the stepped wear is severe due to frequent loading and transportation, and wear of the tray and the liquid crystal cell occurs.

According to the present invention, when the semi-finished products such as liquid crystal panels, upper and lower substrates manufactured in the liquid crystal display device manufacturing process are transported by molding the foamed resin (EPP and EPE material) to form the uneven surface of the tray, the glass is damaged. It is an object of the present invention to provide a tray for transporting a liquid crystal display device and a method for manufacturing the same, which can prevent the increase, increase the productivity of the tray, and reduce the manufacturing cost.

In order to achieve the above object, the liquid crystal display device transport tray according to the present invention,

A plurality of front protrusions having a step with the cell seating portion is formed in a matrix form on a tray plate on which a cell seating portion for transporting liquid crystal cells is formed, and is consistent with the front protrusions on the tray plate being stacked on the back side of the tray plate. It is characterized in that a plurality of rear projections are formed for maintaining the gap.

Here, the front protrusion is formed with one or more grooves in the central region for easy detachment of the liquid crystal cell seated in the cell seating portion, the material of the tray consisting of the tray plate, the front protrusion and the rear protrusion is foamable Resin, wherein the expandable resin is an EPE-based resin or an EPP-based resin.

And the cell seating portion formed on the tray plate is formed at a position opposite to the rear protrusion portion formed on the rear surface, and the width of the front protrusion portion formed on the tray plate has a thickness of 0.2 mm or more. And, the front projection formed on the tray plate is characterized in that the structure can be fastened and laminated with the rear projection portion of the other tray.

The liquid crystal display device transportation tray manufacturing method of the present invention,

Setting a mold in which the dimensions of the semi-finished liquid crystal display device for transportation are molded in a vacuum molding machine;                     

Heating heat in the mold of the vacuum molding machine;

Injecting effervescent resin into the heated mold with air; And

And thermally bonding the injected expandable resin to complete a tray for transporting a liquid crystal display device.

The foamable resin is an EPE-based resin or an EPP-based resin, and when the foamable resin is injected into a mold, the foamable resin further includes a surfactant.

According to the present invention, by forming a foamed resin to form a concave-convex shape, the glass is prevented from being damaged when foreign materials such as liquid crystal cells, array substrates, etc. manufactured in a liquid crystal display device manufacturing process are transported. In addition, there is an advantage that can increase tray productivity and reduce manufacturing costs.

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

3A is a front view of a tray for transporting a liquid crystal display according to the present invention.

As shown in Fig. 3a, the tray for transporting the liquid crystal display device manufactured according to the present invention is molded using a foaming resin.

Therefore, the structure of the tray 100 according to the present invention in order to safely transport a plurality of liquid crystal cells, TFT array substrate completed in the manufacturing process of the liquid crystal display device and the liquid crystal cell on the tray plate 101 made of foamable resin material A plurality of cell seating portions 110 capable of mounting the same semi-finished product are formed.                     

After the liquid crystal cell is seated around the cell seating unit 110, a plurality of front protrusions 120 are formed in a matrix form to prevent the liquid crystal cell from being separated from the tray plate 101 in a transport process.

In addition, a plurality of rear protrusions (150 of FIG. 3B) are formed on a rear surface of the tray plate 101 in a matrix structure, and are formed at positions facing the front protrusion 120 and the tray plate 101. .

The plurality of rear protrusions 150 formed on the rear surface of the tray plate 101 may be combined with the front protrusions 120 of the other tray plate so that a plurality of trays 100 may be easily stacked.

The plurality of front protrusions 120 formed on the tray plate 101 may allow the semi-finished products such as liquid crystal cells to be detachably attached to the cell seating part 110. One or more grooves 121 were formed in between.

In addition, the width of the front protrusion 120 has a thickness of 0.2 mm or more, so that semi-finished products, such as a liquid crystal cell seated on the seating portion 110, may be safely stored and easily stacked with other trays. .

Therefore, the operator can easily detach the semi-finished products, such as the liquid crystal cell seated on the seating portion 110 of the tray plate 101 by the groove 121 formed between the front protrusions 120. .

The foamable resin, which is a material of the liquid crystal display transportation tray of the present invention, is molded using a polystyrene-based resin made of EPE or a polypropylene-based resin made of EPP.

3B is a rear view of a tray for transporting a liquid crystal display according to the present invention.

As shown in FIG. 3B, the rear structure of the tray for transporting the liquid crystal display according to the present invention has a structure that can face each other with the mounting portions (110 of FIG. 3A) formed on the tray plate 101. , The shape is a rectangular structure is formed with a back protrusion 150 having a constant step on the back of the tray plate 101.

When the trays 100 are stacked, the rear protrusion 150 of the tray plate 101 has a rear protrusion (120) formed on the rear surface of the tray plate 101 with a front protrusion 120 on the tray stacked below. It is fastened to the stepped area portion around the edge of 150 so that it can be safely stacked.

The manufacturing method of the liquid crystal display transport tray according to the present invention described above is as follows.

First, a mold suitable for the size of a semi-finished product, for example, a liquid crystal cell, a TFT array substrate, a color filter substrate, etc., produced during the liquid crystal display device manufacturing process is manufactured.

The mold thus prepared is set in a vacuum molding machine for manufacturing a tray, and then heat is applied to the mold part.

When heat is applied to the mold to reach a predetermined temperature or more, the expandable resin of the EPE resin or the EPP resin is injected together with air.

When the foamable resin is injected, the tray is bonded by using a plug to complete a transport tray.

When injecting the expandable resin, by injecting a surfactant together, it is possible to prevent the generation of static electricity on the tray made of finished products.

This is because products manufactured in liquid crystal displays have many thin layers and thin metal lines, which may cause damage to the device even with weak static electricity.

When injecting the expandable resin, the inlet for injecting air, fuel and milpin together is disposed at a position 0.1 mm or more lower than the inlet position of the vacuum molding machine according to the prior art in consideration of the thickness of the foam tray is thicker than conventional. .

Figure 4 is a view showing the cell seating portion of the liquid crystal display transport tray according to the present invention, as shown, the upper surface of the liquid crystal display transport tray plate made of a foamed resin is a semi-finished product such as a plurality of liquid crystal cells in the form of a matrix The seating portion 110 to be seated is formed.

In the periphery of the seating portion 110, a plurality of front protrusions 120 serving as jaws common to adjacent seating portions are formed in a cross structure.

Semi-finished products, such as the liquid crystal cell 200, are seated in the seating part 110, and grooves 121 are formed along a reference line that separates the seating part 110 adjacent to the front protrusions 120 formed on the circumference thereof. It is.

Such grooves 121 are intended to allow a worker to easily detach a semi-finished product such as a liquid crystal cell 200 from the seating part 110.

Basically the role of the front protrusion 120 is to prevent the semi-finished products such as the liquid crystal cell 200 seated on the seating portion 110 is separated from the tray by vibration or shock.

FIG. 5 is a view illustrating a stacked state of a tray for transporting a liquid crystal display according to the present invention. As shown in FIG. 5, trays 100 made of a foamable resin are stacked, and the tray of the tray 100 is stacked. The front protrusions 120 formed on the plate 101 are combined with the rear protrusions formed on the back surface of the tray plate 101 of the tray 100 stacked on the upper portion of the tray 101 and stacked without movement.

The plurality of front protrusions 120 formed on the tray plate 101 are fastened to the plurality of rear protrusions of the tray plate 101 stacked on the tray plates 101, respectively. It does not deviate or separate.

FIG. 6 is a view illustrating upper and lower gap structures of stacked trays according to the present invention. As illustrated, the stacked trays have a rear protrusion 150 of the tray plate 101 and a seating portion of the tray plate 101. A predetermined distance is inserted into the front projection 120 formed around the seating portion 110 is coupled to the circumference of the rear projection 150 is stacked trays.

At this time, the semi-finished product such as the liquid crystal cell 200 seated on the seating portion of the tray plate 101 and the rear protrusion 150 of the tray plate 101 should not touch each other, as shown in the drawing. Keep it.

Therefore, the tray for transporting the liquid crystal display device of the present invention is manufactured by using a foam resin so that the thickness thereof is thicker than that of the conventional tray so that semi-finished liquid crystal display devices can be safely removed or transported.

In addition, since the trays are all made of a foamable resin, even when shocks or vibrations are transmitted from the outside, the semi-finished liquid crystal display devices such as the liquid crystal cells are not damaged.

In addition, the dimensions of the mold for manufacturing the tray can be increased to improve the production efficiency.

As described in detail above, the present invention by forming a foamed resin to form a concave-convex shape, the glass damage when transporting semi-finished products, such as liquid crystal cells, array substrates, etc. manufactured in the liquid crystal display manufacturing process There is an effect that can prevent.

In addition, since the liquid crystal cell and the array substrate are mounted and transferred to the uneven structure of the tray, foreign substances generated in semi-finished products for transportation can be reduced, and productivity of the tray can be increased and manufacturing cost can be reduced.

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 (10)

A plurality of front protrusions having a step with the cell seating portion is formed in a matrix form on a tray plate on which a cell seating portion for transporting liquid crystal cells is formed, and is consistent with the front protrusions on the tray plate being stacked on the back side of the tray plate. A tray for transporting a liquid crystal display device, characterized in that a plurality of rear projections are formed to maintain a gap. The method of claim 1, And the front protrusion has one or more grooves formed in a central area for easy detachment of the liquid crystal cell seated on the cell seating portion. The method of claim 1, A tray for transporting a liquid crystal display device, characterized in that the material of the tray including the tray plate, the front protrusion and the rear protrusion is made of a foamed resin. The method of claim 3, wherein The foamable resin is an EPE-based resin or EPP-based resin characterized in that the tray for transporting a liquid crystal display device. The method of claim 1, And a cell seating part formed on the tray plate, the cell seating part being formed at a position opposite to the back protrusion part formed on the back side. The method of claim 1, A tray for transporting a liquid crystal display device, wherein a width of the front protrusion formed on the tray plate has a thickness of 0.2 mm or more. The method of claim 1, And a front protrusion formed on the tray plate and configured to be fastened and stacked with a rear protrusion of another tray. Setting a mold in which the dimensions of the semi-finished liquid crystal display device for transportation are molded in a vacuum molding machine; Heating heat in the mold of the vacuum molding machine; Injecting effervescent resin into the heated mold with air; And And heat-bonding the injected foamed resin to complete a liquid crystal display transport tray for manufacturing a liquid crystal display transport tray. The method of claim 8, The foamable resin is an EPE-based resin or EPP-based resin characterized in that the tray for transporting a liquid crystal display device. The method of claim 8, And injecting a surfactant together when injecting the effervescent resin into the mold, the method of manufacturing a tray for transporting a liquid crystal display device.

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