KR101243808B1 - Method For Fabricating Liquid Crystal Display Device - Google Patents

Abstract

The present invention relates to a method for manufacturing a liquid crystal display device which is intended to cut a liquid crystal panel of a double cell consisting of three substrates without defects, and in particular, preparing the first, second, and third substrates; Bonding the second substrate to each other, cutting the first and second substrates through a scribing process and a braking process to form a liquid crystal panel, and at least a liquid crystal panel including the first and second substrates. After aligning on at least two or more third substrates, bonding the second and third substrates of the liquid crystal panel, and cutting the third substrate by a scribing process and a braking process to align the first and second substrates. And forming a liquid crystal panel including a third substrate, forming a color filter layer on an inner surface of the first substrate, forming a black matrix on the color filter layer, and forming the color filter. Further comprising forming a first edge attached to each other in the key, the first key attached to each other of the first substrate is not formed is characterized in that formed at the same time as the black matrix.

Bonding key, liquid crystal inlet, double cell, scribe process, brake process

Description

Method for manufacturing liquid crystal display device {Method For Fabricating Liquid Crystal Display Device}

1 is a block diagram showing a procedure of a liquid crystal display device manufacturing method according to the prior art.

2 is a cross-sectional view of a liquid crystal display device according to the prior art.

3A to 3D are cross-sectional views illustrating a method of manufacturing a liquid crystal display device according to a first embodiment of the present invention.

4A to 4H are cross-sectional views illustrating a method of manufacturing a liquid crystal display device according to a second embodiment of the present invention.

5A to 5G are cross-sectional views illustrating a method of manufacturing a liquid crystal display device according to one of the second embodiments of the present invention.

6 is a plan view of a liquid crystal display device according to the present invention;

* Explanation of symbols on the main parts of the drawings

111, 112, 113: 1st, 2nd, 3rd board | substrate

120: scribe wheel

201 and 202: first and second transparent electrodes

211, 212: first and second seal system

230: black matrix

241, 242: first and second engagement key

261 and 262: first and second alignment films

270: first liquid crystal inlet

281, 282: first and second liquid crystal cells

The present invention relates to a method for manufacturing a liquid crystal display device, and more particularly, to a method for manufacturing a liquid crystal display device which is intended to cut a liquid crystal panel of a double cell composed of three substrates without defects.

Recently, with the development of new advanced imaging devices such as high definition TVs, liquid crystal displays (LCDs), electro luminescence displays (ELDs), vacuum fluorescence displays (VFDs), and PDPs are used instead of CRTs. Research on flat panel display devices such as plasma display panels is being actively conducted.

Among them, the liquid crystal display device is a representative technology of a flat panel display, and has characteristics such as thin, low cost, low power consumption, etc. Its use is also rapidly expanding.

In the liquid crystal display device having such characteristics, a color filter array substrate, which is a first substrate, and a TFT (Thin Film Transistor) array substrate, which is a second substrate, are disposed to face each other, and a liquid crystal having dielectric anisotropy therebetween. In this structure, the thin film transistor (TFT) added to hundreds of thousands of pixels is switched through a pixel selection address line to drive a voltage to the corresponding pixel.

In order to manufacture the above liquid crystal display device, the first substrate (color filter layer array substrate) forming process, the second substrate (thin film transistor array substrate) forming process, sealant forming process, spacer forming process, liquid crystal injection process, etc. It must be done.

Hereinafter, with reference to the drawings in detail as follows.

1 is a block diagram showing a procedure of a method for manufacturing a liquid crystal display device according to the prior art, and FIG. 2 is a cross-sectional view of the liquid crystal display device according to the prior art.

First, as shown in FIGS. 1 and 2, the first substrate forming process S1 forms a black matrix 111 on the first substrate 101 and arranges the black matrix 111 in a predetermined order thereon. After forming a color filter layer 112 of red, green, and blue to implement color, the common electrode 113 is formed on the entire surface including the color filter layer. In this case, an overcoat layer may be further formed on the entire surface including the color filter layer to compensate for the step of the color filter layer and to prevent the material of the color filter layer from being diffused into the liquid crystal cell.

The second substrate forming process S2 is performed by repeating deposition, photolithography, and etching processes on the second substrate 102 to form the gate wirings and the data wirings 135. A thin film transistor (TFT) and a pixel electrode 122 are formed in each pixel region defined by.

After completing the first and second substrate forming processes, an alignment layer (not shown) for determining the initial alignment of the liquid crystal may be further formed on the entire surface including the first substrate or the second substrate provided with various patterns.

As described above, after performing the first and second substrate forming process, a plastic ball made of a size of 4 ~ 5㎛ on the front surface of the second substrate 102 to maintain the cell gap between the substrate (plastic) A spacer forming process (S3) of dispersing a ball spacer 115 such as a ball or a silica sphere is performed.

Subsequently, a sealing agent forming process (S4) of forming a sealing agent 116 in which micro pearls and the like are mixed at an edge of the first substrate 101 to form a cell gap and to prevent leakage of liquid crystals. Do this. The sealant is formed by a printing method in the remaining area except the liquid crystal inlet.

Subsequently, after the bonding key of the first substrate and the bonding key of the second substrate are automatically aligned, the second substrate 102 on which the ball spacer 115 is formed and the first substrate 101 on which the sealant 116 are formed are removed. To face oppositely.

Subsequently, the sealant is cured under a high temperature and a high pressure to perform a substrate bonding step (S5) of completely bonding the two substrates.

Subsequently, the scribe process (S6) of forming a scribe line on the surface of the substrate in order to cut the first and second substrates completely adhered to the required size, and the bonded substrate by applying an impact to the scribe line in the liquid crystal panel unit The brake process S7 for separating is further performed.

Finally, the liquid crystal is injected through the liquid crystal injection hole, and the liquid crystal injection process S5 is performed to form the liquid crystal cell 103 between the first and second substrates by sealing the liquid crystal injection hole. This completes the liquid crystal display element.

However, the manufacturing method of the liquid crystal display device according to the prior art as described above has the following problems.

That is, the conventional liquid crystal display device forms a common electrode and a pixel electrode on the first and second substrates, and initially arranges the liquid crystal directors, and then applies the voltage to the common electrodes and the pixel electrodes to switch the liquid crystal directors on the screen. Display the image.

Such liquid crystal display devices are in the spotlight for providing excellent contrast and color reproducibility, but suffer from the chronic problem of narrow viewing angles.

The present invention is to solve the above-described viewing angle problem, and proposes a liquid crystal display device constituting a double cell of the first and second liquid crystal cells with three substrates, the first liquid crystal cell is a liquid crystal of a general liquid crystal display device Like the cell, the switching is driven by external image data to display an image on the screen, and the second liquid crystal cell improves the viewing angle by adjusting the wide viewing angle and the narrow viewing angle.

In this case, the scribe process and the brake process are applied to cut the liquid crystal panel composed of three substrates to a desired size. The present invention provides a method of manufacturing a liquid crystal display device in which three substrates are to be separated cleanly without a defect in the cutting process. The purpose is to provide.

The method of manufacturing a liquid crystal display device of the present invention configured as described above comprises the steps of preparing a first, second, third substrate, opposing-bonding the first, second substrate, and the first, second Cutting the substrate by a scribing process and a breaking process to form a liquid crystal panel; and aligning at least two or more liquid crystal panels composed of the first and second substrates on a third substrate, and then Bonding the second substrate to the third substrate of the second substrate; and cutting the third substrate by a scribing process and a breaking process to complete a liquid crystal panel including first, second, and third substrates. Characterized in that made.

That is, after bonding the first and second substrates to form a first liquid crystal cell, the first and second substrates are cut to a desired size by applying a scribe process and a break process to the first and second substrates. After bonding the third substrate to the second substrate to form a second liquid crystal cell, a scribe process and a break process are applied to the third substrate to cut the first, second, and third substrates to a desired size without a bad cutting process. Characterized in that.

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

3A to 3D are cross-sectional views illustrating a method of manufacturing a liquid crystal display device according to a first embodiment of the present invention, and FIGS. 4A to 4H illustrate a method of manufacturing a liquid crystal display device according to a second embodiment of the present invention. Process cross section.

The liquid crystal display device according to the present invention is characterized by constituting a double cell of the first and second liquid crystal cells with three substrates. In order to form a liquid crystal panel having a desired size, a mother substrate stacked with three sheets is used. The scribe process and the brake process should be applied. 3A to 3D are cross-sectional views illustrating a cutting process of the liquid crystal display device according to the first embodiment of the present invention.

First, as shown in FIG. 3A, the first, second, and third substrates 11, 12, and 13 are bonded to each other in sequence. In this case, the first substrate is a color filter layer array substrate, the second substrate is a thin film transistor array substrate, and the third substrate is a substrate for adjusting the viewing angle, and a first liquid crystal cell is provided between the second substrates 11 and 12. The second liquid crystal cell is provided between the second and third substrates 12 and 13.

As shown in FIG. 3B, the first and third substrates 11 and 13 may be cut using a scribe wheel 20 in order to cut the three stacked mother substrates into a desired liquid crystal panel. A scribe line S is formed on the outer side of the.

Next, as shown in FIG. 3C, the scribe line S is impacted to cut the first, second, and third substrates 11, 12, and 13 to obtain a liquid crystal panel having a desired size.

However, as shown in FIG. 3D, a process defect occurs in which the second substrate 12 is not cut. That is, since the scribing process cannot be performed on the second substrate 12 provided between the first and third substrates during the scribing process of the first and third substrates, the second substrate may be subjected to an impact during the brake process. It is not cut. Thereafter, the second substrate protruding without cutting may be cut in a separate process, but in this case, in the process for obtaining two liquid crystal panels, only one liquid crystal panel 1P can be obtained. This happens.

The second embodiment of the present invention has been devised to solve the problems of the first embodiment as described above, and the technical details to be proposed in the present invention are limited to the second embodiment to be described below.

First, as shown in FIG. 4A, the first and second substrates 111 and 112 are opposed to each other. In this case, a black matrix, red, green, and blue color filter layers and a common electrode are provided on the inner surface of the first substrate 111, and the second substrate 112 is provided. ), A gate wiring, a data wiring, a thin film transistor (TFT), and a pixel electrode are provided on the inner side of the substrate. In addition, a first spacer is provided between the first and second substrates to uniformly space the two substrates, and a first seal agent for completely bonding the two substrates is further provided at edges of the first and second substrates. . Thereafter, liquid crystal is sealed in the space between the first and second substrates to form the first liquid crystal cell.

In this case, in order to face the first and second substrates to each other, a bonding key is required, and the first and second substrates are accurately aligned through the bonding key. Meanwhile, another region of the first substrate may further include a first bonding key, which is then used when bonding with the third substrate. The first bonding key may be simultaneously formed when the black matrix is patterned.

In addition, the second bonding key of the third substrate may be seen through the portion where the bonding key of the first substrate is formed so that an opaque pattern such as a wiring is not formed on the second substrate portion corresponding to the first bonding key. Make sure

Next, as shown in FIG. 4B, a scribe line S is formed on the outer surfaces of the first and second substrates 111 and 112 using the scribe wheel 120.

Subsequently, as illustrated in FIG. 4C, the first and second substrates 111 and 112 are cut to a desired size of the liquid crystal panel by performing a brake process that impacts the scribe line.

As a result, as shown in FIG. 4D, two or more liquid crystal panels 1P and 2P are obtained. In this case, a first liquid crystal cell is formed by injecting a liquid crystal between the first and second substrates of each of the liquid crystal panels 1P and 2P through the first liquid crystal injection hole where the first sealant is not formed. At this time, the first liquid crystal cell between the first and second substrates determines the degree of switching of the liquid crystal molecules by external image data to display an image.

Subsequently, as shown in FIG. 4E, each of the liquid crystal panels 1P and 2P composed of the first and second substrates 111 and 112 is bonded to the third substrate 113. When bonding, the first bonding key of the first substrate and the second bonding key of the third substrate are aligned so as to coincide in the direction of the arrow.

In this case, a first transparent electrode is provided on an inner surface of the third substrate 113, and a second transparent electrode is provided on a rear surface of the second substrate 112 facing the third substrate, and between the second and third substrates. The second spacer is further provided to uniformly space the two substrates, and a second sealant for completely bonding the two substrates is further provided at the edges of the second and third substrates. Thereafter, the liquid crystal is sealed in the space between the second and third substrates to form the second liquid crystal cell. The second liquid crystal cell adjusts the degree of switching according to the user's condition setting to implement a wide viewing angle or a narrow viewing angle.

The first and second transparent electrodes are formed of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO). The first transparent electrode and the second transparent electrode are formed on a driving circuit provided at an edge of a substrate. Connected to receive a voltage. In this case, the second liquid crystal cell is driven by an electric field formed between the first and second transparent electrodes.

Here, a voltage injection line may be further provided between the first transparent electrode and the third substrate or between the second transparent electrode and the second substrate in order to apply a voltage to the first and second transparent electrodes more quickly. The voltage injection wiring is generally formed of a metal having a low resistance, but the metal is opaque so that the voltage injection wiring is formed in a range that does not lower the aperture ratio of the device. That is, it may be formed so as to overlap the portion where the gate wiring and the data wiring are formed on the second substrate.

On the other hand, a second bonding key for aligning with the first bonding key of the first substrate is further provided at the edge of the third substrate. When the voltage injection wiring is not provided, the second bonding key is used as a separate photo etching process. The second bonding key is formed simultaneously with the voltage injection wiring when the voltage injection wiring is provided.

The first and second transparent electrodes may be formed on the second and third substrates as described above, but may be collectively formed on one of the second and third substrates in an electrically separated pattern. It's okay. The first and second transparent electrodes may be formed in a cylindrical shape on the entire surface, or may be divided into a plurality and formed in a matrix arrangement.

In addition, an alignment layer may be provided on at least one of the rear surface of the second substrate facing the third substrate and the inner surface of the third substrate to determine the initial alignment of the second liquid crystal cell. In this case, the alignment layer may or may not be rubbed with the alignment layer.

When the alignment film is formed on the rear surface of the second substrate, the high temperature step and the pressing step are avoided in order not to damage the first liquid crystal cell. That is, the alignment film may be baked at low temperature, the alignment film may be formed by a printing method, or a rubbing process may be performed.

Next, as shown in FIG. 4F, a scribe line S is formed on the outer surface of the third substrate 113 using the scribe wheel 120. The scribe line is formed at the same or similar position as the scribe line of the first and second substrates.

Subsequently, as illustrated in FIG. 4G, the third substrate 113 is cut to a desired size of the liquid crystal panel by performing a brake process that impacts the scribe line.

Thereby, as shown in FIG. 4H, the liquid crystal panels 1P and 2P which consist of three board | substrates of the 1st, 2nd, 3rd board | substrates 111, 112, and 113 can be obtained without a bad cutting process.

Thereafter, a second liquid crystal cell is formed by injecting a liquid crystal between the second and third substrates of each of the liquid crystal panels 1P and 2P through the second liquid crystal injection hole where the second sealant is not formed. At this time, the second liquid crystal cell between the second and third substrates determines the degree of switching of the liquid crystal molecules according to the user's setting conditions, thereby controlling the viewing angle. The liquid crystal of the second liquid crystal cell may be the same material as the liquid crystal of the first liquid crystal cell, or may be a different material.

In the above-described embodiment, after cutting the first and second substrates, a liquid crystal is encapsulated between the first and second substrates to form a first liquid crystal cell, and after the third substrate is cut, between the second and third substrates. However, the present invention has been limited to forming a second liquid crystal cell by encapsulating a liquid crystal in the liquid crystal. However, the first and second liquid crystal cells may be simultaneously formed after cutting the third substrate without being limited thereto.

That is, after cutting to the third substrate to complete each liquid crystal panel consisting of three substrates, in the last step, the same liquid crystal material is injected simultaneously through the first and second liquid crystal inlets to form the first and second liquid crystal cells. Can be. In this case, forming the first liquid crystal injection hole of the first liquid crystal cell and the second liquid crystal injection hole of the second liquid crystal cell may facilitate the liquid crystal injection process.

However, when the first and second liquid crystal cells are simultaneously formed in the last step, and the liquid crystal material of the first liquid crystal cell and the second liquid crystal cell is to be formed differently, the first liquid crystal inlet and the second liquid crystal inlet are located at the same time. That is, the liquid crystal materials are formed at different corners of the substrate so that the liquid crystal materials do not mix with each other when the liquid crystal is injected.

One embodiment of the second embodiments described above will be described below in more detail.

5A through 5G are cross-sectional views illustrating a method of manufacturing a liquid crystal display device according to one of the second embodiments of the present invention, and FIG. 6 is a plan view of the liquid crystal display device according to the present invention.

First, the first substrate on which the black matrix, the color filter layer, the common electrode and the first bonding key are formed, the second substrate on which the gate wiring, the data wiring, the thin film transistor and the pixel electrode are formed, the transparent electrode and the second bonding A third substrate on which a key is formed is prepared. The first, second, and third substrates are mother substrates, and patterns forming a plurality of liquid crystal panels are formed.

In this case, as illustrated in FIG. 5A, a first transparent electrode 201 for driving the second liquid crystal cell is formed on the front surface of the second substrate 112.

Thereafter, a first sealant 211 is formed on the second substrate 112. The first sealant 211 is formed at the edge of each liquid crystal panel, but the first liquid crystal injection hole 270 is formed. It is not formed at a predetermined portion of one edge. (See Figure 6)

Next, as shown in FIG. 5B, the first substrate 111 is opposed to the second substrate 112. At this time, as described above, the first substrate is provided with a first bonding key. The first bonding key 241 may be formed at the same time when the black matrix 230 is patterned, and a portion from which the black matrix is removed in a predetermined form becomes the first bonding key (see FIG. 6).

Next, a scribe line (S of FIG. 6) is formed on the outer surfaces of the first and second substrates 111 and 112 using the scribe wheel 120 having a constant pressure and speed. If the substrate is a glass substrate, a scribe line is formed on the surface of the glass substrate by using a scribe wheel made of diamond or tungsten, which is harder than glass.

Subsequently, as illustrated in FIG. 5C, the first second substrates 111 and 112 are cut to a desired size of the liquid crystal panel by applying a direct impact using a break bar along the scribe line. At this time, be careful not to apply intensive force to the local place.

After the scribing / breaking process, a physical process using strong air wind is performed to remove debris generated during the process.

In this way, the mother substrate is cut to obtain a plurality of liquid crystal panels 1P and 2P. In this case, a liquid crystal is injected between the first and second substrates 111 and 112 of each of the liquid crystal panels 1P and 2P through the first liquid crystal injection hole where the first sealant 211 is not formed, and then the first liquid crystal injection hole is opened. Encapsulation is performed to form the first liquid crystal cell 281. In this case, the first liquid crystal cell between the first and second substrates is driven by an electric field formed between the common electrode and the pixel electrode.

Subsequently, as illustrated in FIG. 5D, the second substrate 112 forms a first alignment layer 261 on the first transparent electrode 201. When the first alignment layer is formed on the rear surface of the second substrate, a high temperature step and a pressing step are avoided in order not to damage the first liquid crystal cell. That is, the first alignment layer is coated and then baked at a low temperature, the first alignment layer is formed by a printing method, or a rubbing process in which pressure is applied is not performed.

Subsequently, as shown in FIG. 5E, a second sealant 212 is formed at the edge of the third substrate, and the second sealant 212 is formed at the edge of each liquid crystal panel, but the second liquid crystal injection hole is formed. In order to form the second sealant is not formed at a predetermined portion of the edge.

In this case, on the third substrate 113, the second transparent electrode 202 facing the first transparent electrode 201 of the second substrate and the second alignment layer 262 facing the first alignment layer 261 of the second substrate 262. ) And a second bonding key 242 corresponding to the first bonding key 241 of the first substrate. The second engagement key should be formed of an opaque material and visible between the first engagement keys.

When only the second transparent electrode is formed on the third substrate, a second bonding key is formed by a separate photoetch process using an opaque material, and the voltage injection wiring and the second transparent electrode are formed on the third substrate. In the case of forming a, it is formed simultaneously with the voltage injection wiring.

Next, after the separated liquid crystal panels 1P and 2P composed of the first and second substrates are aligned with the third substrate 113, the second sealing agent 212 is used as an adhesive to form the second liquid crystal panel. The substrate and the third substrate are opposed to each other. When the liquid crystal panels 1P and 2P are aligned with the third substrate 113, the first bonding key 241 of the first substrate 111 and the second bonding key 242 of the third substrate 113 are aligned. Make sure it is aligned correctly.

Next, as shown in Figure 5f, using the scribe wheel 120 having a constant pressure and speed to form a scribe line (S) on the outer surface of the third substrate 113, the brake bar along the scribe line An impact is applied to cut the third substrate 113 to the size of the desired liquid crystal panel.

After the scribing / breaking process, a physical process using strong air wind is performed to remove substrate debris generated during the process.

As a result, as shown in FIG. 5G, a plurality of liquid crystal panels 1P and 2P composed of three substrates are obtained. At this time, the liquid crystal is injected between the second and third substrates 112 and 113 of each of the liquid crystal panels 1P and 2P through the second liquid crystal injection hole where the second sealant 212 is not formed and the second liquid crystal injection hole is opened. Encapsulation is performed to form a second liquid crystal cell 282. In this case, the second liquid crystal cell between the second and third substrates is driven by an electric field formed between the first and second transparent electrodes.

Although not shown, after forming the second liquid crystal cell, the cutting surface and the edge of the liquid crystal panel are ground by using a grinding wheel having a predetermined mesh.

On the other hand, the present invention described above is not limited to the above-described embodiment and the accompanying drawings, it is possible that various substitutions, modifications and changes within the scope without departing from the technical spirit of the present invention. It will be apparent to those of ordinary skill in Esau.

That is, in the above, the first and second liquid crystal cells are bonded to each other by joining the two substrates, and vacuuming the space between the two substrates, and then capillary phenomenon to inject the liquid crystal between the two substrates limited to the liquid crystal injection method As described above, the present invention is not limited thereto, and the liquid crystal dropping method in which the liquid crystal is dropped and spreads evenly on one of the substrates and then bonded to the substrates may be applied.

In addition, although the first liquid crystal cell has been described as being limited to the TN mode driven by the vertical electric field formed between the common electrode of the first substrate and the pixel electrode of the second substrate, the present invention is not limited thereto. In-plane switching (IPS) mode It may also be applicable to FFS (Fringe Field Switching) mode. Unlike the TN mode, the IPS mode forms a pixel electrode and a common electrode in parallel on the second substrate and drives the liquid crystal cell in a transverse electric field formed therebetween, and has a much better viewing angle than the TN mode.

In addition, although only one liquid crystal panel is formed on one mother substrate, the liquid crystal panel may be formed on one mother substrate, which is well known in the art.

The manufacturing method of the liquid crystal display device of the present invention as described above has the following effects.

First, the first and second substrates are bonded to form a first liquid crystal cell, and then the first and second substrates are cut to a desired size by applying a scribe process and a break process to the first and second substrates. After the third substrate is bonded to the second substrate to form a second liquid crystal cell, a scribe process and a brake process are applied to the third substrate, so that the first, second and third mother substrates can be cut without defects. I can cut it cleanly in size.

Second, when the first and second liquid crystal cells are formed using the same liquid crystal material, the process of forming the first liquid crystal cell and the second liquid crystal cell can be performed at the same time, thereby making the liquid crystal injection process easier.

Third, after cutting the first and second substrates to the size of each liquid crystal panel, it is important to align them accurately in the process of bonding the cut liquid crystal panel to the third substrate. Accurate alignment is possible by accurately aligning the bonding key and the second bonding key additionally formed on the second substrate.

Claims (24)

Preparing a first, second, and third substrate, Opposing the first and second substrates; Cutting the first and second substrates through a scribing process and a breaking process to form a liquid crystal panel; Aligning at least two or more liquid crystal panels comprising the first and second substrates on a third substrate, and then bonding the second and third substrates of the liquid crystal panel to each other; Cutting the third substrate by a scribing process and a breaking process to complete a liquid crystal panel including first, second, and third substrates; Forming a color filter layer on an inner surface of the first substrate; Forming a black matrix on the color filter layer; The method may further include forming a first bonding key on an edge of the first substrate on which the color filter layer is not formed. And the first bonding key is formed simultaneously with the black matrix. The method of claim 1, The first and second substrates are bonded by a first sealant formed at the edge of the substrate in the remaining region except for the first liquid crystal injection hole, And the second and third substrates are bonded by a second sealant formed at the edge of the substrate in the remaining region except for the second liquid crystal injection hole. The method of claim 1, Wherein the first and second liquid crystal injection holes are formed at the same position or at different positions. The method of claim 1, After cutting the first and second substrates, a first liquid crystal cell is formed between the first and second substrates, And after the cutting of the third substrate, forming a second liquid crystal cell between the second and third substrates. 5. The method of claim 4, After forming the first liquid crystal cell, And forming an alignment layer on a rear surface of the second substrate which is not in contact with the first liquid crystal cell. 6. The method of claim 5, Wherein the alignment layer is not baked at low temperature, formed by a printing method, or not rubbed. The method of claim 2, After cutting the third substrate, And forming a first liquid crystal cell between the first and second substrates and simultaneously forming a second liquid crystal cell between the second and third substrates. The method of claim 7, wherein When the first and second liquid crystal cells are formed of the same material, The first and second liquid crystal inlet is formed in the same position manufacturing method of the liquid crystal display device. The method of claim 7, wherein When the first and second liquid crystal cells are formed of different materials, Wherein the first and second liquid crystal injection holes are formed at different corners of the substrate. delete delete The method of claim 1, Forming a transparent electrode on an inner surface of the third substrate; And forming a second bonding key at the same position as the first bonding key on the edge of the third substrate. 13. The method of claim 12, And forming a voltage injection line in contact with the transparent electrode under the transparent electrode. The method of claim 13, And in the forming of the voltage injection wiring, simultaneously forming the second bonding key. 13. The method of claim 12, And aligning the first bonding key of the first substrate and the second bonding key of the third substrate when the liquid crystal panel is aligned on the third substrate. The method of claim 1, On an inner side surface of the second substrate facing the first substrate, Gate wiring and data wiring crossing to define sub-pixels, A thin film transistor provided at the intersection of the two wires; And forming a pixel electrode connected to the thin film transistor. 17. The method of claim 16, And an opaque pattern is not formed on a portion of the second substrate corresponding to the first bonding key. The method of claim 1, And forming an alignment layer on at least one of a rear surface of the second substrate facing the third substrate and an inner surface of the third substrate. The method of claim 18, When the alignment layer is formed on the rear surface of the second substrate facing the third substrate, the alignment layer is formed before the bonding of the liquid crystal panel to the third substrate. The method of claim 1, And a first transparent electrode and a second transparent electrode formed on a rear surface of the second substrate facing the third substrate and an inner surface of the third substrate, respectively. 21. The method of claim 20, The first transparent electrode or the second transparent electrode is formed in a cylindrical shape on the front surface or divided into a plurality of manufacturing method of the liquid crystal display device, characterized in that formed in a matrix arrangement. 21. The method of claim 20, In preparing the second substrate, And forming a first transparent electrode on a rear surface of the second substrate facing the third substrate. The method of claim 1, And forming both first and second transparent electrodes electrically separated from each other on an inner surface of the third substrate. The method of claim 1, And after cutting the first and second substrates or cutting the third substrate, removing the cutting fragments of the substrate using strong air wind. .

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