KR101970553B1

KR101970553B1 - Method of fabricating lightweight and thin liquid crystal display device

Info

Publication number: KR101970553B1
Application number: KR1020120055029A
Authority: KR
Inventors: 김병근; 이대훈; 이재원; 배은진
Original assignee: 엘지디스플레이 주식회사
Priority date: 2012-05-23
Filing date: 2012-05-23
Publication date: 2019-08-13
Also published as: KR20130131163A

Abstract

In the method of manufacturing a light weight thin liquid crystal display device according to the present invention, in the case of using an auxiliary substrate to process a thin glass substrate, a cell is formed by applying a drum pad of an elliptic cylinder shape having a predetermined curvature to be bonded. A method for easily separating an auxiliary substrate from a liquid crystal panel in a cell state, the method comprising: providing first and second auxiliary substrates and thin first and second mother substrates; Attaching the first and second auxiliary substrates to the thin first and second mother substrates, respectively; Performing an array process on the first mother substrate to which the first auxiliary substrate is attached; Performing a color filter process on a second mother substrate to which the second auxiliary substrate is attached; Bonding the first mother substrate subjected to the array process and the second mother substrate subjected to the color filter process; Providing a table provided with an integral drum pad having a plurality of suction means thereon; Loading the bonded first and second mother substrates onto the table; Lowering the front end of the drum pad and raising the rear end to adsorb the front end surface of the second auxiliary substrate through the adsorption means; Separating the second auxiliary substrate from the second mother substrate by gradually raising the front end of the drum pad and gradually lowering the rear end in the state where the second auxiliary substrate is adsorbed; Inverting the first and second mother substrates from which the second auxiliary substrate is separated up and down and loading them on the table again; Lowering the front end of the drum pad and raising the rear end to adsorb the front end surface of the first auxiliary substrate through the adsorption means; And separating the first auxiliary substrate from the first mother substrate by gradually raising the front end of the drum pad and gradually lowering the rear end in the state where the first auxiliary substrate is adsorbed.

Description

Lightweight thin liquid crystal display device manufacturing method {METHOD OF FABRICATING LIGHTWEIGHT AND THIN LIQUID CRYSTAL DISPLAY DEVICE}

The present invention relates to a manufacturing method of a liquid crystal display device, and more particularly, to a manufacturing method of a light weight thin liquid crystal display device.

In recent years, as the society enters a full-scale information age, the display field for processing and displaying a large amount of information has been rapidly developed, and recently, a thin film transistor (Thin) having excellent performance of light weight, thinness, and low power consumption has recently been developed. Film Transistor (TFT) Liquid Crystal Display (LCD) has been developed to replace the existing cathode ray tube (CRT).

The liquid crystal display device is largely composed of a color filter substrate and an array substrate, and a liquid crystal layer formed between the color filter substrate and the array substrate.

The color filter substrate distinguishes between a color filter composed of red (R), green (G), and blue (B) colors and the sub color filter and transmits the liquid crystal layer. It consists of a black matrix that blocks light and a transparent common electrode that applies a voltage to the liquid crystal layer.

The array substrate has gate lines and data lines arranged vertically and horizontally to define pixel regions. In this case, a thin film transistor as a switching element is formed in an intersection region of the gate line and the data line, and a pixel electrode is formed in each pixel region.

The color filter substrate and the array substrate configured as described above are joined to face each other by sealants formed on the outer side of the image display area to form a liquid crystal panel. The combination of the color filter substrate and the array substrate is the color filter substrate or the array substrate. It is made through a bonding key formed on the substrate.

Since the liquid crystal display is particularly used in portable electronic devices, it is possible to improve the portability of the electronic device only by reducing its size and weight. Moreover, in recent years, as the large-area liquid crystal display device is manufactured, the demand for such a light weight and a thin film becomes more intense.

There may be various ways to reduce the thickness or weight of the liquid crystal display, but there are limitations in reducing the essential components of the liquid crystal display in terms of its structure and current technology. Moreover, since these essential components are small in weight, it is very difficult to reduce the weight or weight of the entire liquid crystal display by reducing the weight of these essential components.

Therefore, the method of reducing the thickness and weight of the liquid crystal display device by reducing the thickness of the color filter substrate and the array substrate constituting the liquid crystal panel has been actively researched. The substrate is bent or broken during the process.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for manufacturing a lightweight thin liquid crystal display device which prevents breakage of a thin glass substrate by adhering an auxiliary substrate to the thin glass substrate.

Another object of the present invention is to provide a method for manufacturing a light weight thin liquid crystal display device which allows the auxiliary substrate to be easily separated from the liquid crystal panel in a cell state in which the process is completed.

Other objects and features of the present invention will be described in the configuration and claims of the invention described below.

In order to achieve the above object, a method for manufacturing a lightweight thin liquid crystal display device of the present invention comprises the steps of providing a first, a second auxiliary substrate and a thin first, second mother substrate; Attaching the first and second auxiliary substrates to the thin first and second mother substrates, respectively; Performing an array process on the first mother substrate to which the first auxiliary substrate is attached; Performing a color filter process on a second mother substrate to which the second auxiliary substrate is attached; Bonding the first mother substrate subjected to the array process and the second mother substrate subjected to the color filter process; Providing a table provided with an integral drum pad having a plurality of suction means thereon; Loading the bonded first and second mother substrates onto the table; Lowering the front end of the drum pad and raising the rear end to adsorb the front end surface of the second auxiliary substrate through the adsorption means; Separating the second auxiliary substrate from the second mother substrate by gradually raising the front end of the drum pad and gradually lowering the rear end in the state where the second auxiliary substrate is adsorbed; Inverting the first and second mother substrates from which the second auxiliary substrate is separated up and down and loading them on the table again; Lowering the front end of the drum pad and raising the rear end to adsorb the front end surface of the first auxiliary substrate through the adsorption means; And separating the first auxiliary substrate from the first mother substrate by gradually raising the front end of the drum pad and gradually lowering the rear end in the state where the first auxiliary substrate is adsorbed.

At this time, the drum pad is characterized in that the lower surface is formed to have an elliptic cylinder shape having a predetermined curvature.

In this case, a plurality of adsorption means having a vacuum adsorption function is formed on the curvature surface of the drum pad.

In this case, the plurality of adsorption means is characterized in that arranged in one row or staggered from one side to the other side of the drum pad.

At this time, the plurality of adsorption means is attached to the lower surface of the drum-type pad or characterized in that the mold is attached integrally to the lower surface of the drum-type pad.

And aligning the first and second mother substrates loaded on the table with the drum pads thereon.

At this time, by using the bar-shaped first and second push pins to push up the exposed push pin areas of both edges of the second auxiliary substrate to form a knife entry space between the second auxiliary substrate and the second mother substrate. It further comprises a step.

At this time, the first and second knives are entered into the knife entry space between the second auxiliary substrate and the second mother substrate, and the first and second knives are moved from one side of the table to the other side and the second auxiliary substrate And detaching the edges between the second mother substrates.

At this time, the front end of the drum pad is lowered and the rear end is raised to adsorb the front surface of the second auxiliary substrate through the adsorption means attached to the front end of the drum pad.

In this case, the front end of the drum pad is gradually raised and the rear end is gradually lowered while the second auxiliary substrate is adsorbed, and an air knife is formed into a space formed between the second auxiliary substrate and the second mother substrate. It is characterized in that for separating the second auxiliary substrate from the second mother substrate by injecting air.

At this time, the second auxiliary substrate is characterized in that the adsorption by the adsorption means of the drum pad in the front end to the rear end direction is characterized in that the separation of the second auxiliary substrate from the front end.

Pressing up the exposed push pin regions at both edges of the first sub-board using the first and second push pins to form a knife entry space between the first sub-substrate and the first mother substrate. Characterized in that.

At this time, the first and second knives are entered into the knife entry space between the first auxiliary substrate and the first mother substrate, and the first and second knives are moved from one side of the table to the other side and the first auxiliary substrate And detaching the edge portion between the first mother substrate.

At this time, the front end of the drum pad is lowered and the rear end is raised to adsorb the front surface of the first auxiliary substrate through the adsorption means attached to the front end of the drum pad.

At this time, the front end of the drum pad is gradually raised and the rear end is gradually lowered while the first auxiliary substrate is adsorbed, and an air knife is formed into a space formed between the first auxiliary substrate and the first mother substrate. It is characterized in that for separating the first auxiliary substrate from the first mother substrate by injecting air.

At this time, the first auxiliary substrate is characterized in that the adsorption by the adsorption means of the drum pad from the front end to the rear end direction is characterized in that the separation of the first auxiliary substrate from the front end.

And an auxiliary table installed at one end of the table at the point where the first and second auxiliary substrates are detached from the drum pad.

In this case, the auxiliary table has a height that is 1 to 2 times the height of the liquid crystal panel of the bonded cell state.

At this time, the auxiliary table is characterized in that the height can be adjusted.

As described above, the light weight thin liquid crystal display device manufacturing method according to the present invention can implement a light weight thin liquid crystal display device using a thin glass substrate to reduce the thickness or weight of a television or monitor model and a portable electronic device. It can be effective.

In addition, the method for manufacturing a lightweight thin liquid crystal display device according to the present invention is applied to the drum pad of the elliptic cylinder shape having a predetermined curvature, without damaging the auxiliary substrate from the liquid crystal panel in the cell state where the process is completed. It can be easily separated. As a result, the tact time is minimized and the process is stabilized, thereby improving the price competitiveness of the product.

1 is a flow chart schematically showing a method of manufacturing a lightweight thin liquid crystal display device according to the present invention.
2A to 2D are exemplary views schematically showing a part of a process of manufacturing a light weight thin liquid crystal display device according to the present invention.
3A and 3B are plan views schematically showing first and second auxiliary substrates and first and second mother substrates having corner cuts according to the present invention;
FIG. 4 is a plan view schematically illustrating first and second mother substrates in which a push pin region is formed by attaching first and second auxiliary substrates having edge cuts according to the present invention; FIG.
5A to 5L are cross-sectional views sequentially illustrating a separation process of an auxiliary substrate in the method of manufacturing a lightweight thin liquid crystal display device according to a first embodiment of the present invention.
FIG. 6 is a flowchart schematically illustrating a separation process of an auxiliary substrate in a method of manufacturing a lightweight thin liquid crystal display device according to a second embodiment of the present invention. FIG.
7A to 7N are cross-sectional views sequentially illustrating a separation process of an auxiliary substrate in a method of manufacturing a lightweight thin liquid crystal display device according to a second embodiment of the present invention.
FIG. 8 is a perspective view showing, for example, a drum pad used in a separation process of an auxiliary substrate in the method for manufacturing a lightweight thin liquid crystal display device according to a second embodiment of the present invention. FIG.
9A, 9B, and 9C are plan views showing, for example, a method of detaching the auxiliary substrate using the drum pad according to the present invention;
10 is a cross-sectional view showing a part of a separation process of an auxiliary substrate in the method for manufacturing a lightweight thin liquid crystal display device according to a third embodiment of the present invention.

Recently, as the use of liquid crystal display devices is diversified, interest in lightweight thin liquid crystal display devices is increasing, and interest in thinning substrates, which occupies the largest portion of the thickness of the liquid crystal panel, is also increasing. In addition, in a 3D or touch panel, a retarder or a touch function protective substrate is added to the liquid crystal panel, thereby increasing the demand for thinning. However, in the case of thin substrates, there is a limitation in the process progress due to weakening of physical properties such as bending and rigidity.

In order to solve this problem, a method of separating the auxiliary substrate from the thin glass substrate after the process is completed after attaching the auxiliary substrate to the thin glass substrate is completed, and in particular, in the present invention, electrostatic force, vacuum force or surface tension is used. Process by attaching an auxiliary substrate to a thin glass substrate, and reducing the bonding force by forming a plasma treatment such as fluorine or an uneven pattern on the auxiliary substrate, and having an elliptic cylinder having a predetermined curvature. By applying the drum-shaped pad of the process is completed, it is characterized in that the auxiliary substrate is easily separated from the liquid crystal panel of the bonded cell state.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of a method for manufacturing a lightweight thin liquid crystal display device according to the present invention.

1 is a flowchart schematically illustrating a method of manufacturing a lightweight thin liquid crystal display device according to the present invention.

1 illustrates an example of a method of manufacturing a liquid crystal display device in the case of forming a liquid crystal layer by a liquid crystal dropping method, but the present invention is not limited thereto, and the present invention forms a liquid crystal layer by a liquid crystal injection method. It is also applicable to the manufacturing method of a liquid crystal display device in this case.

The manufacturing process of the liquid crystal display device may be classified into a driving element array process of forming a driving element on a lower array substrate, a color filter process of forming a color filter on an upper color filter substrate, and a cell process.

As described above, there are various factors that determine the thickness and weight of the liquid crystal display device. Among them, the color filter substrate or the array substrate made of glass is the heaviest component among other components of the liquid crystal display device. Therefore, in order to reduce the thickness or weight of the liquid crystal display device, it is most efficient to reduce the thickness or weight of the glass substrate.

As a method of reducing the thickness or weight of the glass substrate, there is a method of etching the glass substrate to reduce its thickness or using a thin glass substrate. The first method is to reduce the thickness by further glass etching process after the completion of the cell, there are disadvantages of the defects and cost increase during the etching process.

In the present invention, a thin glass substrate having a thickness of about 0.1t to 0.4t is used to perform an array process, a color filter process, and a cell process. In this case, the thin glass substrate is attached to an auxiliary substrate to perform a thin process. Minimize the influence of the bending of the glass substrate and characterized in that the thin glass substrate is not damaged during the movement. In this case, t means mm, and 0.1t means a thickness of 0.1mm and 0.4t means a thickness of 0.4mm. In the following description, mm is expressed as t for convenience of explanation.

That is, a thin glass substrate having a thickness of about 0.1t to 0.4t causes a large warpage when the glass substrate is put into a general liquid crystal display manufacturing line, which causes severe deflection of the substrate. When loading and unloading the unit process equipment, there is a problem that warpage occurs suddenly even by a small impact, so that the positional error occurs frequently. .

Accordingly, in the present invention, the auxiliary substrate is attached before the thin glass substrate of 0.1t to 0.4t is introduced into the manufacturing line, thereby generating the same or improved warpage as the glass substrate having a thickness of about 0.7t used for a general liquid crystal display device. It is characterized in that it is possible to prevent the occurrence of problems, such as the substrate sag during the movement or unit process by having a characteristic.

First, the auxiliary substrate of about 0.3t to 0.7t is attached to the thin glass substrate of 0.1t to 0.4t before inserting the thin glass substrate of 0.1t to 0.4t into the manufacturing line of the array process and the color filter process. (S101). However, the present invention is not limited to the thickness of the thin glass substrate and the auxiliary substrate.

The thin glass substrate and the auxiliary substrate may be bonded by contacting the two substrates in a vacuum state, and the bonding force between the two substrates may be estimated by electrostatic force, vacuum force, or surface tension.

At this time, the present invention can facilitate the desorption with the thin glass substrate by reducing the bonding force by forming a plasma treatment using the fluorine (fluorine) or the like pattern on the auxiliary substrate to reduce the bonding force. Explain.

2A to 2D are schematic views showing a part of a process of manufacturing a light-weight thin liquid crystal display device according to the present invention, and show an example of bonding and detaching a thin glass substrate and a plasma-treated auxiliary substrate. .

2A to 2D are characterized in that the adhesion between the auxiliary substrate and the thin glass substrate is eased by treating the plasma on the entire surface of the auxiliary substrate to facilitate detachment between the auxiliary substrate and the thin glass substrate.

As shown in FIG. 2A, for example, a thin glass substrate 100 having a thickness of about 0.1t to 0.4t and an auxiliary substrate 110 having a thickness of about 0.3t to 0.7t are prepared.

In this case, the thin glass substrate 100 may be a large area mother substrate on which a plurality of color filter substrates are arranged for a color filter process or a large area mother substrate on which a plurality of array substrates are arranged for an array process.

Next, as illustrated in FIG. 2B, a plasma using fluorine or the like is treated on the entire surface 111 of the auxiliary substrate 110 to facilitate the detachment of the auxiliary substrate 110.

When the fluorine is treated on the auxiliary substrate 110 as described above, the fluorine etches the surface 111 of the auxiliary substrate 110 to increase the surface roughness or to change the chemical properties of the surface. The adhesion by contact with 100) can be weakened.

Next, as shown in FIG. 2C, the plasma-treated auxiliary substrate 110 is attached to the thin glass substrate 100. In this case, the thin glass substrate 100 and the auxiliary substrate 110 may be bonded together when the glass substrate is used as the auxiliary substrate 110 by contacting the two substrates 100 and 110 in a vacuum state. The adhesion between 100 and 110 may be estimated by electrostatic force, vacuum force or surface tension.

The process panel in which the thin glass substrate 100 having a thickness of 0.1t to 0.4t and the auxiliary substrate 110 having a thickness of 0.3t to 0.7t are bonded to the thin glass substrate 100 constituting the same ) And the auxiliary substrate 110 are made of the same glass material, so that the expansion rate is the same according to the temperature change, there is no problem that warpage occurs due to the expansion rate difference during the unit process.

In addition, the thin glass substrate 100 itself has a thickness of 0.1t ~ 0.4t, but as the secondary substrate 110 is bonded to form a process panel, the occurrence of warpage is significantly reduced and the thickness of the general 0.7t The level of warpage of the glass substrate having a level of less than or equal to that of the glass substrate having a lower level does not cause any problem in proceeding the unit process for the liquid crystal display device.

Thereafter, the thin glass substrate 100 to which the auxiliary substrate 110 is attached is subjected to a color filter process or an array process to be described later to form a thin film transistor or a color filter layer as a driving element in each panel region.

After the completion of the predetermined process, as shown in FIG. 2D, the auxiliary substrate 110 should be separated from the thin glass substrate 100, wherein the plasma is formed on the entire surface 111 of the auxiliary substrate 110. Since the treatment is made, the auxiliary substrate 110 can be easily detached.

That is, when the bonding force between the thin glass substrate 100 and the auxiliary substrate 110 is strong, it is difficult to physically separate, so the bending phenomenon may occur in the thin glass substrate 100 when separating, but the auxiliary substrate 110 When the plasma treatment is performed on the entire surface 111, the bonding force is reduced between the thin glass substrate 100 and the auxiliary substrate 110, so that the auxiliary substrate 110 can be easily detached.

In addition, the auxiliary substrate 110 detached from the thin glass substrate 100 may be attached to a new glass substrate and recycled for a new process.

On the other hand, the method of processing the plasma on the auxiliary substrate may be a partial treatment method in addition to the above-described front surface treatment, for example, to perform a plasma treatment using fluorine or the like on a part surface of the center of the auxiliary substrate to facilitate the detachment of the auxiliary substrate. Can be. In this case, as the fluorine is treated only on a part of the surface of the auxiliary substrate, bonding is performed in a region where contact between the substrates is possible.

In addition, the above cases have been described with an example of facilitating desorption by performing a plasma treatment on the auxiliary substrate to relax the bonding force with the thin glass substrate, but the present invention is not limited thereto. The silver may form a concave-convex pattern on the auxiliary substrate to alleviate the bonding force with the thin glass substrate. As the method of forming the uneven pattern, an inorganic insulating layer patterning, an organic insulating layer patterning, a low temperature SiO ₂ etching, a laser patterning method and the like. As such, when the uneven pattern is formed on the auxiliary substrate, as the surface roughness increases, the bonding force due to contact with the thin glass substrate may be weakened.

In addition, as an example, when the auxiliary substrate is cleaned, the adhesion may be alleviated by reducing the -OH group between the auxiliary substrate and the thin glass substrate by performing a surfactant treatment.

However, the present invention is not limited to the above-described method of attaching the auxiliary substrate, and the present invention can be made in a vacuum state without adhesive or surface treatment for attaching the auxiliary substrate to the thin glass substrate, wherein the two substrates May be bonded by electrostatic force, vacuum force, van der Waals force or surface tension in a vacuum.

On the other hand, as will be described later, as a detachable method that can be applied to the above, there is a method of lifting the auxiliary substrate or the thin glass substrate by holding the upper portion of the auxiliary substrate or the thin glass substrate with a vacuum pad, and at this time, plasma treatment of the surface of the auxiliary substrate. B. The adhesion between the two substrates is not large due to the formation of the uneven pattern, so that the detachment can be easily performed. In this case, in order to further facilitate the detachment, an elliptic cylinder-type drum pad having a predetermined curvature may be applied.

After the auxiliary substrate is attached to the thin glass substrate as described above, the thin glass substrate for an array substrate (hereinafter referred to as an array substrate for convenience of description) to which the auxiliary substrate is attached is arranged on the array substrate by an array process. As a result, a plurality of gate lines and data lines defining pixel regions are formed, and thin film transistors, which are driving elements connected to the gate lines and data lines, are formed in each pixel region (S102). In addition, the pixel electrode is connected to the thin film transistor through the array process to drive the liquid crystal layer as a signal is applied through the thin film transistor.

In addition, a thin glass substrate for a color filter substrate (hereinafter, referred to as a color filter substrate for convenience of description) to which the auxiliary substrate is attached has a red, green, and blue sub-color filter that implements color by a color filter process. A color filter layer and a common electrode are formed (S103). In this case, when a liquid crystal display device having an in-plane switching (IPS) method is manufactured, the common electrode is formed on an array substrate on which the pixel electrode is formed through the array process.

Subsequently, after the alignment film is printed on the color filter substrate and the array substrate, the alignment control force or the surface fixing force (that is, the pretilt angle and orientation) is applied to the liquid crystal molecules of the liquid crystal layer formed between the color filter substrate and the array substrate. Direction) to rub the alignment film (S104, S105).

A sealing material is applied to the rubbed color filter substrate as described above to form a predetermined failure turn, and a liquid crystal is dropped on the array substrate to form a liquid crystal layer (S106 and S107).

On the other hand, the color filter substrate and the array substrate are each formed on a large area mother substrate. In other words, a plurality of panel regions are formed in each of the large mother substrates, and a thin film transistor or a color filter layer serving as a driving element is formed in each of the panel regions.

In this case, the dropping method uses a dispenser to drop and dispense liquid crystals in an image display area of a first mother substrate having a large area in which a plurality of array substrates are arranged or a second mother substrate in which a plurality of color filter substrates are disposed. The liquid crystal layer is formed by uniformly distributing the liquid crystals to the entire image display region by the pressure for bonding the first and second mother substrates together.

Therefore, when the liquid crystal layer is formed on the liquid crystal panel by a dropping method, a failure turn should be formed in a closed pattern surrounding the outer portion of the pixel region so as to prevent the liquid crystal from leaking out of the image display region.

The dropping method can drop the liquid crystal in a short time compared to the vacuum injection method, and can form the liquid crystal layer very quickly even when the liquid crystal panel is enlarged. In addition, since only the required amount of liquid crystal is dropped on the substrate, the price competitiveness of the liquid crystal panel due to the disposal of the expensive liquid crystal is prevented, such as vacuum injection, thereby strengthening the product's price competitiveness.

Thereafter, the first mother substrate and the second mother substrate are bonded together by the sealing material by applying pressure while the liquid crystal is dropped and the first mother substrate and the second mother substrate coated with the sealing material are aligned as described above. The liquid crystal dropped by the application of pressure is spread evenly over the entire liquid crystal panel (S108). By such a process, a plurality of liquid crystal panels in which a liquid crystal layer is formed are formed in the first and second mother substrates having a large area, and the first and second mother substrates are formed from the first and second mother substrates in which the plurality of liquid crystal panels are formed. 2 After separating the auxiliary substrate, the substrate is processed, cut into a plurality of liquid crystal panels, and each liquid crystal panel is inspected to produce a liquid crystal display device (S109 and S110).

In this case, as described above, the present invention is characterized in that the auxiliary substrate is separated from the liquid crystal panel by applying an elliptic cylinder-shaped pad having a predetermined curvature, wherein the push pin region is formed by using the edge cut of the substrate. This facilitates the separation of the auxiliary substrate, which will be described in detail with reference to the accompanying drawings.

3A and 3B are plan views schematically illustrating first and second auxiliary substrates and first and second mother substrates having corner cuts according to the present invention.

FIG. 4 is a plan view schematically illustrating first and second mother substrates in which a first and second auxiliary substrates having corner cuts are attached and a push pin region is formed according to the present invention.

Referring to the drawings, as described above, in the present invention, a thin glass substrate of 0.1t to 0.4t, that is, 0.3t to 0.7t before the first and second mother substrates 101 and 102 are introduced into the manufacturing line. By attaching the first and second auxiliary substrates 110a and 110b having a thickness, the movement or unit process is performed to have the same or improved warpage generation characteristics as the glass substrate having a thickness of about 0.7t used in a general liquid crystal display device. It is characterized by being able to prevent the occurrence of problems such as substrate sag during the process.

In this case, corners of the first and second mother substrates 101 and 102 and the first and second auxiliary substrates 110a and 110b in the bonded state, to which the plurality of liquid crystal panels 103 are allocated, may be at predetermined angles. This is called cutting, which is called edge cutting.

In particular, at least two edges of the thin first and second mother substrates 101 and 102 are cut inwardly in comparison with the first and second auxiliary substrates 110a and 110b for direction discrimination and post-processing. As a result, the corner portions of the first and second sub-boards 110a and 110b are exposed, and this area is formed by the push pins to start the separation process of the first and second sub-boards 110a and 110b. Push pins may be used as push pin areas A and B to which the push pins are applied.

Hereinafter, a method of separating the auxiliary substrate from the liquid crystal panel in a cell state in which the process is completed will be described in detail with reference to the accompanying drawings.

5A to 5L are cross-sectional views sequentially illustrating a separation process of an auxiliary substrate in the method of manufacturing a lightweight thin liquid crystal display device according to a first embodiment of the present invention. However, the present invention is not limited to the order of the separation process of the auxiliary substrate shown in Figure 5a to 5l.

As shown in FIG. 5A, the first and second mother substrates 101 and 102 bonded to each other after completion of the process may include the first and second auxiliary substrates 110a and 110b attached to each other to proceed with the process. The first and second mother substrates 101 and 102 should be separated from the first and second mother substrates 101 and 102, respectively. For this purpose, the first and second mother substrates 101 and 102 are first loaded onto the table 190 of the detachment apparatus.

In this case, the first mother substrate 101 on which the thin film transistor array substrates are formed and the second mother substrate 102 on which the color filter substrates are formed may be formed of a thin glass substrate having a thickness of about 0.1t to about 0.4t. In order to proceed, the first and second auxiliary substrates 110a and 110b of about 0.3t to 0.7t having a predetermined plasma treatment or uneven pattern are attached to each of the first and second mother substrates 101 and 102. Can be. However, the present invention is not limited to the thicknesses of the thin first and second mother substrates 101 and 102 and the first and second auxiliary substrates 110a and 110b.

For reference, the liquid crystal panel includes a liquid crystal layer (not shown) formed between the color filter substrate and the array substrate and the color filter substrate and the array substrate, and the bonding of the color filter substrate and the array substrate is formed outside the image display area. It is made by the yarn pattern 105.

The thin first and second mother substrates 101 and 102 and the first and second auxiliary substrates 110a and 110b may be bonded to each other by contacting the two substrates 101, 110a, 102 and 110b in a vacuum state. The bonding force between the two substrates 101, 110a, 102, 110b may be estimated by electrostatic force, vacuum force, or surface tension.

At this time, for example, the first and second mother substrates 101 and 102 are loaded on the table 190 so that the second auxiliary substrate 110b to be separated is upward. 2, a vacuum pad unit including a plurality of vacuum pads 140 and a vacuum pad plate 145 supporting them is provided on the mother substrates 101 and 102.

At this time, although not shown, the desorption equipment including the vacuum pad unit may be disposed at the front and rear ends of the table 190 to separate the first and second auxiliary substrates 110a and 110b. And first and second air knives.

In addition, the desorption apparatus is an alignment unit for aligning the vacuum pad unit with the first and second mother substrates 101 and 102 loaded on the table 190, the plurality of vacuum pads 140 A plurality of transfer units for moving each up and down and a vacuum chuck for fixing the aligned first and second mother substrates 101 and 102 may be further provided.

The first and second mother substrates 101 and 102 loaded on the table 190 of the detachable device configured as described above are aligned with the vacuum pad unit at the upper portion thereof through the aforementioned alignment unit.

Subsequently, as shown in FIG. 5B, predetermined pressure is applied to the exposed push pin regions at both edges of the second auxiliary substrate 110b by using the bar-shaped first and second push pins 130a and 130b. By pressing upward, the knife entry space is formed between the second auxiliary substrate 110b and the thin glass substrate, that is, the second mother substrate 102.

The first and second knives (not shown) are introduced into the corner space between the second auxiliary substrate 110b and the second mother substrate 102, that is, the knife entry space, and the first and second knives are moved. By moving from one direction of the table 190 to the other direction to remove the edge portion between the second auxiliary substrate 110b and the second mother substrate 102 to secure the entry space of the air knife.

Thereafter, as shown in FIG. 5C, the second auxiliary substrate 110b is raised by using the vacuum pad 140 of the first row and the last row, that is, the ninth row, of the vacuum pad unit. First and second air knives 162a and 162b are introduced between the entry spaces and air is injected into the air knife entry spaces. At this time, the vacuum pads 140 of the first row and the ninth row are lowered to the surface of the second auxiliary substrate 110b, and then the vacuum of the vacuum pad 140 is turned on to raise by a predetermined height. Accordingly, the second auxiliary substrate 110b is raised to a certain height.

As shown in FIG. 5D, after the vacuum pads 140 of the first row and the ninth row are moved to their original state, the second auxiliary substrate ( While raising 110b, air is injected into the first and second air knives 162a and 162b into a space formed between the second auxiliary substrate 110b and the second mother substrate 102.

Thereafter, as shown in FIGS. 5E and 5F, the vacuum pad 140 at the front end, that is, the vacuum pad 140 at the second row, is lowered, while the vacuum pad 140 at the rear end, that is, the vacuum of the eighth row, is lowered. While raising the pad 140, the second air knife 162b enters the space formed between the second auxiliary substrate 110b and the second mother substrate 102, and sprays air to blow the air into the second auxiliary substrate 110b. Complete the removal of the.

As shown in FIG. 5G, the first and second mother substrates 101 and 102 in which the second auxiliary substrate is separated are vertically inverted and then loaded on the table 190 of the detachable device. .

That is, the first and second mother substrates 101 and 102 are loaded on the table 190 such that the first auxiliary substrate 110a to be separated is upward, and the loaded first and second mother substrates are loaded. The above-mentioned vacuum pad unit is provided in the upper part of 101 and 102.

The first and second mother substrates 101 and 102 loaded on the table 190 of the detachment apparatus are aligned with the vacuum pad unit on the upper portion thereof through the above-described alignment unit.

Then, as shown in Figure 5h, using the bar-shaped first and second push pins (130a, 130b) by pressing the exposed push pin area of the both sides of the first auxiliary substrate (110a) at a constant pressure up. A knife entry space is formed between the first auxiliary substrate 110a and the thin glass substrate, that is, the first mother substrate 101.

In addition, the first and second knives (not shown) are introduced into the corner space between the first auxiliary substrate 110a and the first mother substrate 101, that is, the knife entry space, and the first and second knives are moved. By moving from one direction of the table 190 to the other direction to remove the edge portion between the first auxiliary substrate 110a and the first mother substrate 101 to secure the entry space of the air knife.

Thereafter, as shown in FIG. 5I, the first auxiliary substrate 110a is raised by using the vacuum pad 140 of the first row and the last row, that is, the ninth row, of the vacuum pad unit. First and second air knives 162a and 162b are introduced between the entry spaces and air is injected into the air knife entry spaces. At this time, the vacuum pad 140 of the first row and the ninth row is lowered to the surface of the first auxiliary substrate 110a, and then the vacuum of the vacuum pad 140 is turned on to increase by a predetermined height. The first auxiliary substrate 110a is raised to a certain height.

And, as shown in Figure 5j, after moving the vacuum pad 140 of the first row and the ninth row to the original state, the first auxiliary substrate (using the vacuum pad 140 of the second row and eighth row ( While raising 110a, air is injected into the first and second air knives 162a and 162b into a space formed between the first auxiliary substrate 110a and the first mother substrate 101.

Thereafter, as shown in FIGS. 5K and 5L, the vacuum pad 140 at the front end, that is, the vacuum pad 140 at the second row is lowered, while the vacuum pad 140 at the rear end, that is, the vacuum of the eighth row, is lowered. While raising the pad 140, the second air knife 162b enters the space formed between the first auxiliary substrate 110a and the first mother substrate 101 and sprays air to blow the first auxiliary substrate 110a. Complete the removal of the.

As described above, the method for manufacturing a lightweight thin liquid crystal display device according to the present invention is performed by removing an edge portion between the first and second mother substrates and the first and second auxiliary substrates with a knife and injecting air therebetween through the air knife. The first and second auxiliary substrates can be easily separated from the liquid crystal panel in which the cell state is completed and joined.

However, there is a possibility that failure of the first and second auxiliary substrates may occur during the detachment process of the individual driving method of individually driving the plurality of vacuum pads according to the heat. That is, when desorption after vacuum pad adsorption, a non-removable portion may occur due to sagging in the middle of the first and second sub-boards, or due to uneven detachment force on the left and right sides of the vacuum pad and uneven discharge pressure of the first and second air knives. There is a possibility that a defect occurs in which the central portion of the first and second auxiliary substrates is broken.

Accordingly, the present invention can be easily separated without damage to the auxiliary substrate from the liquid crystal panel of the bonded cell state by applying the drum pad of the elliptic cylinder shape having a predetermined curvature, the following invention It will be described in detail through the second embodiment of the.

FIG. 6 is a flowchart schematically illustrating a separation process of an auxiliary substrate in the method of manufacturing a lightweight thin liquid crystal display device according to a second embodiment of the present invention.

7A to 7N are cross-sectional views sequentially illustrating a separation process of an auxiliary substrate in the method for manufacturing a lightweight thin liquid crystal display device according to a second embodiment of the present invention. However, the present invention is not limited to the order of the separation process of the auxiliary substrate shown in FIGS. 7A to 7N.

8 is a perspective view illustrating a drum pad used in a separation process of an auxiliary substrate in the method for manufacturing a lightweight thin liquid crystal display device according to a second embodiment of the present invention.

As shown in FIG. 7A, the first and second mother substrates 101 and 102 bonded to each other after completion of the process may include the first and second auxiliary substrates 110a and 110b attached to each other to proceed with the process. The first and second mother substrates 101 and 102 must be separated from the first and second mother substrates 101 and 102, respectively. For this purpose, the first and second mother substrates 101 and 102 are first loaded onto the table 190 of the detachment apparatus (S201). .

In this case, as described above, the first mother substrate 101 on which the thin film transistor array substrates are formed and the second mother substrate 102 on which the color filter substrates are formed may be formed of a thin glass substrate of about 0.1t to 0.4t. In this case, the first and second auxiliary substrates 110a and about 0.3t to 0.7t having a predetermined plasma treatment or uneven pattern formed on each of the first and second mother substrates 101 and 102 for process progress. 110b) may be attached. However, the present invention is not limited to the thicknesses of the thin first and second mother substrates 101 and 102 and the first and second auxiliary substrates 110a and 110b.

At this time, for example, the first and second mother substrates 101 and 102 are loaded on the table 190 so that the second auxiliary substrate 110b to be separated is upward. 2 An integrated drum pad 180 having a plurality of adsorption means 185 is provided above the mother substrates 101 and 102.

In this case, referring to FIG. 8, the drum pad 180 has an elliptic cylinder shape having a predetermined curvature, and a plurality of adsorption means 185 having a vacuum adsorption function on the curved surface thereof. It is provided. The adsorption means 185 may be arranged in a row or staggered from left to right of the drum pad 180, or may be randomly arranged regardless of the row. The plurality of adsorption means 185 may be separately attached to the bottom surface of the drum pad 180 or may be integrally attached to the bottom surface of the drum pad 180 in a mold form.

However, the present invention is not limited to the adsorption means 185 having the vacuum adsorption function, and in addition to the vacuum method, an adhesive rubber method having its own adhesive properties is also applicable.

As described above, the drum pad 180 according to the second embodiment of the present invention is integrally formed so that the plurality of adsorption means 185 uniformly cover the first and second auxiliary substrates 110a and 110b over heat. As a result of the adsorption, failure of the first and second auxiliary substrates 110a and 110b as described above can be prevented.

At this time, although not shown, the desorption equipment including the vacuum pad unit may be disposed at the front and rear ends of the table 190 to separate the first and second auxiliary substrates 110a and 110b. And an air knife.

In addition, the desorption apparatus is an alignment unit for the alignment between the drum pad (180) and the first and second mother substrate (101, 102) loaded on the table 190, the drum pad ( A plurality of driving units for driving 180 up and down and a vacuum chuck for fixing the aligned first and second mother substrates 101 and 102 may be further provided.

The first and second mother substrates 101 and 102 loaded on the table 190 of the detachable device configured as described above are aligned with the drum pad 180 thereon through the above-described alignment unit ( S202).

Next, as shown in Figure 7b, using the bar-shaped first and second push pins (130a, 130b) to the exposed push pin area of the both sides of the second auxiliary substrate (110b) at a constant pressure up By pressing, a knife entry space is formed between the second auxiliary substrate 110b and the thin glass substrate, that is, the second mother substrate 102 (S203-1).

The first and second knives (not shown) are introduced into the corner space between the second auxiliary substrate 110b and the second mother substrate 102, that is, the knife entry space, and the first and second knives are moved. By moving from one direction of the table 190 to the other direction to remove the edge portion between the second auxiliary substrate 110b and the second mother substrate 102 to secure the entry space of the air knife (S203-2, S203-). 3).

Subsequently, as shown in FIG. 7C, the second auxiliary portion is supported by the suction means 185 attached to the front end of the drum pad 180 by lowering the front end of the drum pad 180 and raising the rear end thereof. The front end surface of the substrate 110b is adsorbed. However, the present invention is not limited thereto, and the second end is provided through the suction means 185 attached to the rear end of the drum-type pad 180 by lowering the rear end of the drum-type pad 180 and raising the front end thereof. The rear end surface of the auxiliary substrate 110b may be adsorbed.

7D, 7E, and 7F, the front end of the drum pad 180 is gradually raised while the second auxiliary substrate 110b is adsorbed, and the rear end is gradually lowered. Meanwhile, the air knife 162 enters the space formed between the second auxiliary substrate 110b and the second mother substrate 102 to inject air to complete the removal of the second auxiliary substrate 110b (S203-). 4). At this time, the second auxiliary substrate 110b is adsorbed by the adsorption means 185 of the drum pad 180 from the front end to the rear end direction, so that the second auxiliary substrate 110b is separated from the front end.

Thereafter, as illustrated in FIG. 7G, the first and second mother substrates 101 and 102 in which the second auxiliary substrate is separated are vertically inverted and then loaded on the table 190 of the detachable device. (S204).

That is, the first and second mother substrates 101 and 102 are loaded on the table 190 such that the first auxiliary substrate 110a to be separated is upward, and the loaded first and second mother substrates are loaded. The drum pads 180 described above are provided on the upper portions 101 and 102.

As shown in FIG. 7H, the first and second mother substrates 101 and 102 loaded on the table 190 of the detachable device are drum pads 180 disposed thereon through the alignment unit described above. ) Is aligned with (S205).

Subsequently, as shown in FIG. 7I, using the bar-shaped first and second push pins 130a and 130b, the exposed push pin regions of both edges of the first auxiliary substrate 110a are pressed upward at a constant pressure. A knife entry space is formed between the first auxiliary substrate 110a and the thin glass substrate, that is, the first mother substrate 101 (S206-1).

In addition, the first and second knives (not shown) are introduced into the corner space between the first auxiliary substrate 110a and the first mother substrate 101, that is, the knife entry space, and the first and second knives are moved. Moving from one direction of the table 190 to the other direction to remove the edge portion between the first auxiliary substrate 110a and the first mother substrate 101 to secure the entry space of the air knife (S206-2, S206-). 3).

Subsequently, as shown in FIG. 7J, the first auxiliary portion is provided through the suction means 185 attached to the front end of the drum pad 180 by lowering the front end of the drum pad 180 and raising the rear end thereof. The front end surface of the substrate 110a is adsorbed. However, the present invention is not limited thereto, and the first end of the drum-type pad 180 may be lowered and the front of the drum-type pad 180 may be lifted to increase the front end. The rear end surface of the auxiliary substrate 110a may be adsorbed.

7K, 7L, 7M, and 7N, the front end of the drum pad 180 is gradually raised while the first auxiliary substrate 110a is adsorbed, and the rear end is gradually increased. While descending, the air knife 162 enters the space formed between the first auxiliary substrate 110a and the first mother substrate 101, and sprays air to complete the detachment of the first auxiliary substrate 110a. (S206-4). At this time, the first auxiliary substrate 110a is adsorbed by the adsorption means 185 of the drum pad 180 from the front end to the rear end direction, thereby separating the first auxiliary substrate 110a from the front end.

As described above, the method for manufacturing a lightweight thin liquid crystal display device according to the present invention detaches the edge portion between the thin glass substrate and the auxiliary substrate with a knife, and the process is completed by applying a drum pad of an elliptic cylinder shape having a predetermined curvature. The auxiliary substrate can be easily separated from the liquid crystal panel in the cell state without damage. As a result, the tact time is minimized and the process is stabilized to improve the price competitiveness of the product.

9A, 9B, and 9C are plan views illustrating, for example, a method of detaching the auxiliary substrate using the drum pad according to the present invention.

Referring to the drawings, the first and second mother substrates 101 and 102 bonded to each other after the process is completed are attached to the first and second auxiliary substrates 110a and 110b attached to the process. Each of the second mother substrates 101 and 102 should be separated from each other. For this purpose, the second mother substrates 101 and 102 may be vertically loaded (see FIG. 9A) or horizontally loaded (see FIG. 9B). Alternatively, the table may be loaded diagonally on the table (see FIG. 9C).

In this case, as described above, the first mother substrate 101 on which the thin film transistor array substrates are formed and the second mother substrate 102 on which the color filter substrates are formed may be formed of a thin glass substrate of about 0.1t to 0.4t. In this case, the first and second auxiliary substrates 110a and about 0.3t to 0.7t having a predetermined plasma treatment or uneven pattern formed on each of the first and second mother substrates 101 and 102 for process progress. 110b) may be attached.

In this case, the drum pads 180a, 180b, and 180c according to the present invention may have the first and second mosquitoes thereunder regardless of the direction in which the bonded first and second mother substrates 101 and 102 are loaded on the table. The plates 101 and 102 must have a sufficient size to cover all of them, and are driven in a longitudinal direction, a horizontal direction, and a diagonal direction (arrow direction shown respectively) according to the loading direction, so that desorption proceeds.

On the other hand, when the first and second auxiliary substrates are attached and detached according to the second embodiment of the present invention described above, the seal pattern outer region of the liquid crystal panel is excited, which is pressed by the drum pad of the present invention. 2 There is a fear that the ends of the auxiliary substrate or the first and second mother substrates are damaged.

In order to improve this, an auxiliary table may be installed at one end of the drum-type pad, which will be described through the following third embodiment of the present invention.

10 is a cross-sectional view showing a part of a separation process of an auxiliary substrate in the method of manufacturing a lightweight thin liquid crystal display device according to a third embodiment of the present invention.

At this time, the manufacturing method of the light weight thin liquid crystal display device according to the third embodiment of the present invention is constructed in substantially the same manner as the second embodiment of the present invention except that an auxiliary table is installed at one end of the drum pad. It is.

In addition, the manufacturing method of the light weight thin liquid crystal display device according to the third embodiment of the present invention has been described with an example in which an auxiliary table is installed at one end of the table at which the detachment is terminated, but the present invention is limited thereto. It is not.

Hereinafter, the separation process of the auxiliary substrate will be described in detail with reference to FIGS. 6 and 10.

The first and second mother substrates 101 and 102 bonded to each other after completion of the process may include the first and second mother substrates 101a and 110b attached to each other to proceed with the process. , 102, respectively, and for this purpose, first, the bonded first and second mother substrates 101 and 102 are loaded onto the table 190 of the detachment apparatus (S201).

In this case, as described above, the liquid crystal panel includes a liquid crystal layer formed between the color filter substrate, the array substrate, and the color filter substrate and the array substrate, and the bonding of the color filter substrate and the array substrate is formed on the outside of the image display area. It is made by the pattern 105.

At this time, as described above, the drum pad 180 has an elliptic cylinder shape having a predetermined curvature, and a plurality of adsorption means 185 having a vacuum adsorption function is provided on the curved surface. The adsorption means 185 may be arranged in a row or staggered from left to right of the drum pad 180, or may be randomly arranged regardless of the row. The plurality of adsorption means 185 may be separately attached to the bottom surface of the drum pad 180 or may be integrally attached to the bottom surface of the drum pad 180 in a mold form.

At this time, although not shown, the desorption equipment including the drum pad 180 is located at the front and rear ends of the table 190 to separate the first and second auxiliary substrates 110a and 110b. A second knife and an air knife can be provided.

In particular, the desorption apparatus according to the third embodiment of the present invention is characterized in that a predetermined auxiliary table 195 is installed at one end of the table 190, wherein the auxiliary table 195 is the drum pad ( 180 may be installed at one end of the point where the detachment of the first and second auxiliary substrates 110a and 110b by 180 ends.

The auxiliary table 195 may have a height h that is about 1 to 2 times the height of the liquid crystal panel in the bonded cell state, and its height may be adjusted.

The first and second mother substrates 101 and 102 loaded on the table 190 of the detachable device configured as described above are aligned with the drum pad 180 thereon through the above-described alignment unit. (S202).

Next, using the first and second push pins described above, pressing the exposed push pin regions at both edges of the second auxiliary substrate 110b at a predetermined pressure upwards to form a thin glass with the second auxiliary substrate 110b. A knife entry space is formed between the substrate, that is, the second mother substrate 102 (S203-1).

The first and second knives are inserted into the corner space between the second auxiliary substrate 110b and the second mother substrate 102, that is, the knife entry space, and the first and second knives are placed on the table 190. The edge portion between the second auxiliary substrate 110b and the second mother substrate 102 is removed by moving from one direction to the other direction to secure an entry space of the air knife (S203-2, S203-3).

Thereafter, the front end of the drum pad 180 is lowered and the rear end thereof is raised so that the front surface of the second auxiliary substrate 110b is formed through the adsorption means 185 attached to the front end of the drum pad 180. Adsorb. However, the present invention is not limited thereto, and the second end is provided through the suction means 185 attached to the rear end of the drum-type pad 180 by lowering the rear end of the drum-type pad 180 and raising the front end thereof. The rear end surface of the auxiliary substrate 110b may be adsorbed.

In this case, as described above, the adsorption means 185 may adsorb the surface of the second auxiliary substrate 110b by a vacuum method or an adhesive rubber method.

Next, in the state where the second auxiliary substrate 110b is adsorbed, the front end of the drum pad 180 is gradually raised and the rear end is gradually lowered, while the second auxiliary substrate 110b and the second auxiliary substrate 110b are gradually lowered. The air knife 162 enters the space formed between the mother substrates 102 and the air is injected to complete the detachment of the second auxiliary substrate 110b (S203-4). At this time, the second auxiliary substrate 110b is adsorbed by the adsorption means 185 of the drum pad 180 from the front end to the rear end direction, so that the second auxiliary substrate 110b is separated from the front end.

At this time, in the case of the third embodiment of the present invention, since the above-described auxiliary table 195 is installed at one end of the point where the detachment of the second auxiliary substrate 110b is terminated, the first pad is pressed by the drum pad 180. The ends of the second auxiliary substrates 110a and 110b and the first and second mother substrates 101 and 102 are not feared to be damaged.

Thereafter, the first and second mother substrates 101 and 102 in which the second auxiliary substrate is separated are inverted up and down, and then loaded again on the table 190 of the detachment apparatus (S204).

In addition, the first and second mother substrates 101 and 102 loaded on the table 190 of the detachable device are aligned with the drum pad 180 thereon through the above-described alignment unit ( S205).

Subsequently, the first push substrate 110a and the thin glass are pressed by pressing the exposed push pin regions of both sides of the first auxiliary substrate 110a at a predetermined pressure by using the bar-shaped first and second push pins. A knife entry space is formed between the substrate, that is, the first mother substrate 101 (S206-1).

In addition, first and second knives are introduced into a corner space between the first auxiliary substrate 110a and the first mother substrate 101, that is, a knife entry space, and the first and second knives are placed on the table 190. The edge portion between the first auxiliary substrate 110a and the first mother substrate 101 is removed by moving from one direction to the other direction to secure an entry space of the air knife (S206-2, S206-3).

Thereafter, the front end of the drum pad 180 is lowered, and the rear end is raised, and the front end surface of the first auxiliary substrate 110a is formed through the adsorption means 185 attached to the front end of the drum pad 180. Adsorb. However, the present invention is not limited thereto, and the first end of the drum-type pad 180 may be lowered and the front of the drum-type pad 180 may be lifted to increase the front end. The rear end surface of the auxiliary substrate 110a may be adsorbed.

Next, while the first auxiliary substrate 110a is adsorbed, the front end of the drum pad 180 is gradually raised and the rear end is gradually lowered, while the first auxiliary substrate 110a and the first auxiliary substrate 110a are gradually lowered. The air knife 162 enters the space formed between the mother substrate 101 and the air is injected to complete the detachment of the first auxiliary substrate 110a (S206-4). At this time, the first auxiliary substrate 110a is adsorbed by the adsorption means 185 of the drum pad 180 from the front end to the rear end direction, thereby separating the first auxiliary substrate 110a from the front end.

At this time, as described above, in the third embodiment of the present invention, since the aforementioned auxiliary table 195 is installed at one end of the point where the detachment of the first auxiliary substrate 110a is terminated, the drum pad 180 is disposed. There is no fear that the ends of the first auxiliary substrate 110a or the first and second mother substrates 101 and 102 are damaged by being pressed by.

Many details are set forth in the foregoing description but should be construed as illustrative of preferred embodiments rather than to limit the scope of the invention. Therefore, the invention should not be defined by the described embodiments, but should be defined by the claims and their equivalents.

100: thin glass substrate 101: first mother substrate
102: second mother substrate 110, 110a, 110b: auxiliary substrate
162: air knife 180,180a, 180b, 180c: drum pad
185: adsorption means 190: table
195: auxiliary table

Claims

Providing first and second auxiliary substrates and thin first and second mother substrates;
Attaching the first and second auxiliary substrates to the thin first and second mother substrates, respectively;
Performing an array process on the first mother substrate to which the first auxiliary substrate is attached;
Performing a color filter process on a second mother substrate to which the second auxiliary substrate is attached;
Bonding the first mother substrate subjected to the array process and the second mother substrate subjected to the color filter process;
Providing a table provided with an integral drum pad having a plurality of suction means thereon;
Loading the bonded first and second mother substrates onto the table;
Lowering the front end of the drum pad and raising the rear end to adsorb the front end surface of the second auxiliary substrate through the adsorption means;
Separating the second auxiliary substrate from the second mother substrate by gradually raising the front end of the drum pad and gradually lowering the rear end in the state where the second auxiliary substrate is adsorbed;
Inverting the first and second mother substrates from which the second auxiliary substrate is separated up and down and loading them on the table again;
Lowering the front end of the drum pad and raising the rear end to adsorb the front end surface of the first auxiliary substrate through the adsorption means; And
The first auxiliary substrate is separated from the first mother substrate by gradually raising the front end of the drum pad while gradually lowering the rear end while the first auxiliary substrate is adsorbed.
A method of manufacturing a light weight thin liquid crystal display device, characterized in that an auxiliary table is provided at one end of the table at the point where the first and second auxiliary substrates are detached from the drum pad.

The method of claim 1, wherein the drum pad has a lower surface having an elliptic cylinder having a predetermined curvature.

The method of manufacturing a light weight thin liquid crystal display device according to claim 2, wherein a plurality of adsorption means having a vacuum adsorption function is formed on the curvature surface of the drum pad.

4. The method of claim 3, wherein the plurality of adsorption means is arranged in a row or staggered from one side to the other of the drum pad.

The method according to claim 4, wherein the plurality of adsorption means are individually attached to the bottom surface of the drum pad or are integrally attached to the bottom surface of the drum pad in a mold form.

The method of claim 1, further comprising: aligning the first and second mother substrates loaded on the table with the drum pad on the upper portion thereof.

The method of claim 6, wherein the first and second push pins in the form of bars press up the exposed push pin regions at both edges of the second sub-board to enter the knife between the second sub-board and the second mother board. A method for manufacturing a lightweight thin liquid crystal display device, further comprising the step of forming a space.

The method of claim 7, wherein the first and second knives are inserted into a knife entry space between the second auxiliary substrate and the second mother substrate, and the first and second knives are moved from one side of the table to the other side. 2. A method of manufacturing a light weight thin liquid crystal display device further comprising the step of detaching an edge portion between the auxiliary substrate and the second mother substrate.

10. The light weight thin film according to claim 8, wherein the front end of the drum pad is lowered and the rear end is raised to adsorb the front surface of the second auxiliary substrate through the suction means attached to the front end of the drum pad. Method of manufacturing a liquid crystal display device.

The space formed between the second auxiliary substrate and the second mother substrate, wherein the front end of the drum pad is gradually raised and the rear end is gradually lowered while the second auxiliary substrate is adsorbed. A method of manufacturing a lightweight thin liquid crystal display device, characterized in that the second auxiliary substrate is separated from the second mother substrate by injecting an air knife into the air knife.

11. The liquid crystal display of claim 10, wherein the second auxiliary substrate is adsorbed by the adsorption means of the drum pad from the front end to the rear end so that the second auxiliary substrate is separated from the front end. Device manufacturing method.

The method of claim 6, wherein the first and second push pins are pressed upward to expose the exposed push pin regions of both edges of the first auxiliary substrate to form a knife entry space between the first auxiliary substrate and the first mother substrate. Light-weight thin liquid crystal display device manufacturing method comprising the step of further comprising.

The method of claim 12, wherein the first and second knives are inserted into a knife entry space between the first auxiliary substrate and the first mother substrate, and the first and second knives are moved from one side of the table to the other side. 1. The method of manufacturing a light weight thin liquid crystal display device further comprising the step of detaching an edge portion between the auxiliary substrate and the first mother substrate.

14. The light weight and thin film according to claim 13, wherein the front end of the drum pad is lowered and the rear end thereof is raised to adsorb the front end surface of the first auxiliary substrate through adsorption means attached to the front end of the drum pad. Method of manufacturing a liquid crystal display device.

The space formed between the first auxiliary substrate and the first mother substrate, wherein the front end of the drum pad is gradually raised and the rear end is gradually lowered while the first auxiliary substrate is adsorbed. A method of manufacturing a lightweight thin liquid crystal display device, characterized in that the first auxiliary substrate is separated from the first mother substrate by injecting an air knife into the air knife.

16. The liquid crystal display according to claim 15, wherein the first auxiliary substrate is adsorbed by the adsorption means of the drum pad from the front end to the rear end, and the first auxiliary substrate is separated from the front end. Device manufacturing method.

delete

The method of claim 1, wherein the auxiliary table has a height that is 1 to 2 times the height of the liquid crystal panel in the bonded cell state.

19. The method of claim 18, wherein the height of the auxiliary table is adjustable.