KR100867167B1 - Liquid Crystal Display Device and Method for Fabricating the same - Google Patents

Abstract

In the present invention, the display area and the non-display area forming the periphery of the display area is defined, and the first and second substrates disposed to face each other; Outer and inner column spacers positioned at edges of the display area and the non-display area boundary area of the section between the first and second substrates and spaced apart from each other by a predetermined distance; A seal pattern formed in the separation section between the first and second column spacers; And a liquid crystal layer interposed in the inner column spacer between the first and second substrates, and the separation distance between the outer and inner column spacers has a value corresponding to the seal pattern width. By preventing contact between the liquid crystal materials, it is possible to prevent image degradation such as seal stains, and second, to improve cell gap uniformity, and third, to form a seal pattern by forming a dispenser printing method using a dispenser printing method having low material and equipment cost Since it can be stably implemented, it has the advantage of increasing the product competitiveness.

Description

Liquid crystal display device and method for manufacturing the same {Liquid Crystal Display Device and Method for Fabricating the same}             

1 is a schematic cross-sectional view of a conventional liquid crystal display device.

Figure 2a, 2b is a cross-sectional view showing a conventional seal pattern manufacturing process and the bonding process of the substrate using the seal pattern step by step.

3 is a plan view of a liquid crystal display device having a conventional seal pattern structure.

4 is a plan view of a liquid crystal display including a seal pattern using the column spacer according to the present invention as a partition structure.

5A to 5C and 6A to 6C are diagrams illustrating a manufacturing process for forming a sealant in the column spacer of FIG. 4, and FIGS. 6A to 6C are cut along the cutting line IV-IV of FIGS. 5A to 5C. Section showing the cross section.

Figure 7 is a cross-sectional view showing an embodiment of a transverse electric field type liquid crystal display device structure including a seal pattern structure using a column spacer as a partition wall according to the present invention.

<Description of the symbols for the main parts of the drawings>

 210: first substrate 230: second substrate                 

250: liquid crystal layer 270: seal pattern

272a: first column spacer 272b: second column spacer

272: column spacer 274: buffer pattern

276: liquid crystal injection hole dd: separation distance between the first and second column spacers

The present invention relates to a liquid crystal display device, and more particularly to a seal pattern structure for a liquid crystal display device.

In general, the driving principle of the liquid crystal display device uses the optical anisotropy and polarization of the liquid crystal. Since the liquid crystal is thin and long in structure, the liquid crystal has directivity in the arrangement of molecules, and the direction of the molecular arrangement can be controlled by artificially applying an electric field to the liquid crystal.

Accordingly, when the molecular arrangement of the liquid crystal is adjusted by the optical anisotropy of the liquid crystal, light may be refracted to express image information.

Currently, an active matrix type liquid crystal display device having a thin film transistor, which is a switching element capable of controlling voltage on / off for each pixel, has attracted the most attention due to its excellent resolution and ability to implement video.

In general, a liquid crystal display device is formed of an array substrate and a color filter substrate through an array process for forming a switching element and a pixel electrode connected to the switching element, and a color filter process for forming a color filter and a common electrode, respectively. It completes through the liquid crystal cell process through a liquid crystal between them.

The liquid crystal cell process may be characterized as having relatively few processes compared with the array process and the color filter layer process. The overall process can be roughly divided into an alignment layer forming process for forming liquid crystal molecules, a cell gap forming process, a bonding process, a cell cutting process, and a liquid crystal injection process. A liquid crystal panel is manufactured, which is a basic component.

1 is a schematic cross-sectional view of a conventional liquid crystal display device.

As illustrated, the first and second substrates 10 and 50 in which the display area and the non-display area forming the outer portion of the display area are defined are disposed to face each other, and the display of the first and second substrates 10 and 50 is displayed. In the structure in which the liquid crystal layer 70 is interposed in the region, the gate electrode 12 is formed on the inner surface of the first substrate 10, and the gate insulating film 14 is formed on the entire surface of the substrate covering the gate electrode 12. The semiconductor layer 16 is formed at a position covering the gate electrode 12 on the gate insulating layer 14, and the source electrode 18 and the drain electrode are spaced apart from each other by a predetermined interval on the semiconductor layer 16. 20 is formed.

The data line 22 is connected to the source electrode 18, the data pad 24 is formed at the end of the data line 22, and the source electrode 18 and the drain electrode 20 are formed. The drain contact hole 26 and the data pad contact hole 28 positioned on the front surface of the substrate covering the data line 22 and the data pad 24 and partially expose the drain electrode 20 and the data pad 24. Protective layers 30 are formed on the protective layer 30, and pixel electrodes 32 connected to the drain electrodes 20 through the drain contact holes 26 are formed on the protective layer 30. A data pad electrode 34 is formed by being connected to the data pad 24 through a 28, and a first alignment layer 36 is formed on the entire surface of the substrate covering the pixel electrode 32 in the display area.

The gate electrode 12, the semiconductor layer 16, the source electrode 18, and the drain electrode 20 form a thin film transistor T.

The thin film transistor T and the data line 22 are located in the display area, and the data pad 24 is located in the non-display area. The thin film transistor T and the data line 22 are connected to the gate electrode 12 although not shown in the drawing. The gate wiring (not shown) is formed in the direction crossing the), and a gate pad is formed at the end of the gate wiring.

The black matrix 52 is formed inside the second substrate 50 to correspond to a non-pixel area other than the pixel area P, which is defined as a non-display area and an area for implementing a screen in the display area. A color filter 54 is connected to the black matrix 52 to transmit only light of a specific wavelength band corresponding to the pixel region P. An overcoat layer 56 is formed below the color filter 54. The common electrode 58 and the second alignment layer 60 in the display area under the overcoat layer 56 are formed in this order.

For example, in the structure in which the overcoat layer 56 is included, the material forming the black matrix 52 is selected from black resin, and in the case of the chromium-based metal material, the overcoat layer 56 is May be omitted.                         

In addition, a seal pattern which prevents the above-described leakage of the liquid crystal layer 70 and joins the first and second substrates 10 and 50 to the boundary between the display area and the non-display area of the first and second substrates 10 and 50. 72 is formed.

Although not shown in the drawing, the seal pattern 72 covers the boundary between the display area and the non-display area, and the liquid crystal injection for liquid crystal injection on one side when the liquid crystal layer 70 is interposed by the injection method using a capillary phenomenon. Contains wealth.

The ball spacer 74 is positioned in the display areas of the first and second substrates 10 and 50 to maintain a constant cell gap together with the seal pattern 72 described above.

In addition, a backlight, which is a separate light source for supplying light, is disposed on the rear surface of the first substrate 10.

2A and 2B are cross-sectional views illustrating a conventional seal pattern manufacturing process and a bonding process of a substrate using the seal pattern.

In FIG. 2A, a seal pattern is formed on a substrate by a dispenser printing method using the same principle as a syringe.

In this step, a liquid seal pattern 130 having viscosity is formed on the first substrate 110 by using a dispenser filled with a sealant, which is a seal pattern material.

The seal pattern 130 is positioned at a boundary between the display area and the non-display area of the first substrate 110, and although not shown in detail, the seal pattern 130 may be connected to the display area of the first substrate 110. It is formed around the border of the non-display area boundary area.                         

In FIG. 2B, forming the liquid crystal layer 170 in the area of the seal pattern 130 of the first substrate 110, and forming a second substrate on the first substrate 110 on which the liquid crystal layer 170 is formed. 150 is aligned, and the first and second substrates 110 and 150 are bonded to each other by curing the seal pattern 130 by a predetermined bonding process.

In this step, the second substrate 150 is aligned with the first substrate 110, and then the first and second substrates 110 and 150 are externally attached to bond the first and second substrates 110 and 150. ), The aforementioned seal pattern 130 is a thickness corresponding to the cell gap d defined by the thickness of the liquid crystal layer 170 by the bonding force before curing, and spreads to both sides.

In the drawing, region "I" corresponds to the formation region of the liquid seal pattern 130, and region "II" corresponds to the formation region of the seal pattern 130 cured after the bonding process.

That is, as the seal pattern 130 passes through the bonding process, the seal pattern 130 spreads to the display area in which the liquid crystal layer 170 is formed, and thus, chemically interacts with the liquid crystal molecules forming the liquid crystal layer 170. Impurities are generated, and these impurities cause a poor image quality called a seal stain.

FIG. 3 is a plan view of a liquid crystal display having a conventional seal pattern structure, and is shown centering on a seal spot generation region appearing around the seal pattern.

As illustrated, the first and second substrates 110 and 150 in which the display area and the non-display area are defined are disposed to face each other, and a boundary between the display area and the non-display area of the first and second substrates 110 and 150. In the structure in which the seal pattern 130 is formed and the liquid crystal layer 170 is interposed in the display area with the seal pattern 130 as a boundary, the seal pattern 130 is cured as described above. As the seal pattern 130 spreads into the display area by the "II" shown in the process of completely bonding the first and second substrates 110 and 150, the "III" area is caused by contact between the material of the seal pattern 130 and the liquid crystal material. In the non-uniform seal stain area (III), there was a problem that appears as a line-shaped stain on the screen.

In order to solve the above problems, an object of the present invention is to provide a liquid crystal display device having a seal pattern structure that can solve the problem of seal stains generated around the seal pattern.

To this end, the present invention is to form a column spacer that can act as a barrier of the seal pattern on the outside and inside of the seal pattern.

However, some constraints are required to apply such column spacers.

First, both the common electrode and the pixel electrode are provided on one substrate, and the present invention is applied to a transverse electric field type liquid crystal display device which drives a liquid crystal by a horizontal electric field.

Second, the seal pattern material is scanned between the column spacers by a dispenser printing method.

The above-mentioned column spacer is omitted in the transverse electric field type liquid crystal display device by using an overcoat layer process or a material similar to an overcoat layer after the overcoat layer process is formed to improve the color characteristics of the color filter and the color filter. In the past, this column spacer was used as a spacer that can replace the ball spacer.

The material constituting the conventional ball spacer is selected from glass fibers or organic materials that are elastic against external pressure. Such ball spacers have the following problems as they are randomly distributed on a substrate.

First, an alignment film defect may occur as the ball spacer moves.

Second, light leakage occurs around the ball spacer due to the adsorption force between the ball spacer and the adjacent liquid crystal molecules.

Third, when applied to a large area liquid crystal display device, it is difficult to maintain a stable cell gap.

Fourth, since the ball spacer has an elastic force and the position is not fixed, a ripple phenomenon may occur when the screen is touched.

In conclusion, there is a problem that it is difficult to secure high quality characteristics in the liquid crystal display device which maintains the cell gap using the ball spacer.

On the other hand, according to the above-described column spacer, the cell gap can be easily maintained and can be fixedly formed on the non-pixel region, so that light leakage caused by the spacer can be prevented, the contrast ratio can be increased, and a small cell gap is required. Even when applied to the model, the cell gap can be precisely controlled, and the rigidity of the product can be increased by fixing the position of the spacer, and for the same reason, it is possible to prevent the ripple phenomenon when the screen is touched.                         

In particular, in the present invention, the thickness and width of the seal pattern can be kept constant, and in particular, the barrier structure column spacers formed at the outside and the inside of the seal pattern forming part to prevent contact between the seal pattern and the liquid crystal material are simultaneously formed. Characterized in that.

In order to achieve the above object, in the first aspect of the present invention, a display area and a non-display area constituting a periphery of the display area are defined, and the first and second substrates are disposed to face each other; First and second column spacers positioned at edge portions of the display area and the non-display area boundary area of the section between the first and second substrates and spaced apart from each other by a predetermined distance; A seal pattern formed in the separation section between the first and second column spacers; A plurality of trapezoidal shapes including a liquid crystal layer interposed in the second column spacer between the first and second substrates and spaced apart from each other by a predetermined interval and having a space in which the seal pattern material can be introduced. A liquid crystal display device comprising two buffer patterns is provided.
The separation distance between the first and second column spacers has a value corresponding to the seal pattern width, and the liquid crystal display includes a common electrode and a pixel electrode on one substrate, and is formed in a section between the common electrode and the pixel electrode. A transverse electric field type liquid crystal display device for driving a liquid crystal by a horizontal electric field, wherein the first and second column spacers are formed on a substrate in which separate electrodes are omitted.
In addition, the material forming the first and second column spacers is selected from organic insulating materials.
In addition, according to the second aspect of the present invention, the first substrate on which the display area and the non-display area forming the periphery of the display area are defined may be spaced apart from each other in a direction corresponding to each other by the border area of the display area and the non-display area. Forming first and second column spacers; Filling a sealant in a section between the first and second column spacers; Bonding a second substrate on the sealant-filled first substrate; And interposing a liquid crystal layer in the second column spacer region between the first and second substrates, and a plurality of trapezoidal buffer patterns spaced apart from each other by a predetermined interval are connected to the outside of the first column spacer. The height of one column spacer and the buffer pattern is lower than the filling height of the sealant provides a method of manufacturing a liquid crystal display device.
In this case, the separation distance of the first and second column spacers has a value corresponding to the width of the seal pattern, and the formation height of the first and second column spacers has a value corresponding to the cell gap defined by the thickness of the liquid crystal layer. The seal pattern is filled by the dispenser printing method of the scanning method.
In addition, a liquid crystal injection hole is formed at one side of the seal pattern, and the liquid crystal layer is interposed by the injection method through the liquid crystal injection hole, and in the forming of the first and second column spacers, the screen in the display area is formed. The method may further include forming a plurality of third column spacers for uniformly distributing the cell gaps in subpixel units, which is a minimum unit.

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

4 is a plan view of a liquid crystal display including a seal pattern using the column spacer according to the present invention as a partition structure.

As shown, a non-display area that defines the display area and the periphery of the display area is defined, and the first and second substrates 210 and 230 are disposed to face each other, and the first and second substrates 210 and 230 are disposed. In the structure in which the liquid crystal layer 250 is interposed in the display area of the display area, the first and second substrates 210 and 230 are bonded to the display area and the non-display area boundary of the first and second substrates 210 and 230. The seal pattern 270 is formed.

One side of the seal pattern 270 includes a liquid crystal inlet 276. When the liquid crystal layer is interposed by a dropping method as an example, a separate liquid crystal inlet is omitted.

Although not shown in the drawing, the display area of the first substrate 210 includes a switching element and a pixel electrode connected to the switching element, and a signal voltage from an external circuit is applied to a non-display area of the first substrate 210. A pad portion is applied and supplied to the above-mentioned switching element.

In the present invention, at the boundary between the display area and the non-display area, the inner and outer edges of the seal pattern 270 are positioned around the seal pattern 270, and the thickness and width of the seal pattern 270 are provided. To maintain a constant, and the first and second column spacers (272a, 272b) positioned in the inner edge portion and the outer edge portion in order to prevent contact with the liquid crystal layer 250 described above is formed do.

In addition, a sealant is formed on the outside of the second column spacer 272b positioned at the outer edge of the second column spacer 272b to be thickly formed with a margin when the seal pattern 270 is formed. It characterized in that it comprises a buffer pattern 274 formed for the purpose of preventing penetration into the display area. The buffer pattern 274 is formed of a plurality of spaced apart from each other by a predetermined interval, for example, has a trapezoidal shape of the ordinary light narrowing (上 廣 下) structure on the basis of the pattern of the second column spacer 272b, the trapezoidal interior is redundant Characterized in that it has a space that can be filled with the sealant material.

The separation distance dd between the first and second column spacers 272a and 272b has a value corresponding to the thickness of the seal pattern 270.

Also, in general, when the first substrate 210 is configured as an array substrate, the non-display area of the first substrate 210 is wider than the non-display area of the second substrate 230 so as to expose the pad part described above. In this case, it is important that the buffer pattern 274 of the second column spacer 272b is located in a common non-display area of the first and second substrates 210 and 230.

Although not shown in detail in the drawings, the liquid crystal display according to the present invention is a transverse electric field type liquid crystal display device in which both a pixel electrode and a common electrode are formed on one substrate to drive a liquid crystal by a horizontal electric field. The two column spacers 272a and 272b are formed on an inner surface of a substrate in which separate transparent electrodes such as a pixel electrode and a common electrode are omitted, and the seal pattern 270 may include first and second column spacers ( It is preferable to form by the scanning printing dispense method in the section between 272a and 272b).

5A to 5C and 6A to 6C are diagrams illustrating a manufacturing process for forming a sealant in the column spacer of FIG. 4, and FIGS. 6A to 6C are cut along the cutting line IV-IV of FIGS. 5A to 5C. As a cross-sectional view showing the cross section, the first substrate is referred to as a substrate in which a separate transparent electrode is omitted, and may correspond to a substrate having a different function from that of the first substrate of FIG. 4.

In FIG. 5A, first and second column spacers 272a and 272b are formed on the first substrate 210 to be spaced apart from each other by a predetermined distance, and a buffer formed to be spaced apart from each other outside the second column spacer 272b. The pattern 274 is connected.

For example, the buffer pattern 274 may be formed in a trapezoidal shape of the upper and lower narrows with respect to the second column spacer 272b, and an extra sealant may be filled in the section between the first and second column spacers 272a and 272b. Have a space.

FIG. 6A illustrates a cross-sectional structure between the first and second column spacers 272a and 272b and the buffer pattern 274 described above with reference to FIG. 5A, and the first and second column spacers 272a and 272b and the buffer pattern 274. Height h is formed to be lower than the sealant filling height, so that the sealant is completely filled in the section between the first and second column spacers 272a and 272b, and the extra sealant material is a buffer pattern. And flows into the area 274 to safely block contact between the seal pattern and the liquid crystal layer.

That is, in the drawing, the region "V" corresponds to the seal pattern forming region, and the region "VI" corresponds to the buffer region into which the excess sealant is introduced.                     

In FIG. 5B, the liquid seal pattern 270 is formed in a section between the first and second column spacers 272a and 272b, and as shown in FIG. 6B, the filling height of the sealant constituting the seal pattern 270 is set to the first. The height of the first and second column spacers 272a and 272b and the buffer pattern 274 is higher than the height h so that the sealant is completely filled in the first and second column spacers 272a and 272b in the bonding process. To do that.

In FIG. 5C, as described above with reference to FIG. 6B, as the sealant is filled to a certain height, excess sealant material flows into the buffer region VI, thereby preventing the sealant from flowing into the display region. Can be.

In FIG. 6C, the second substrate 230 is aligned with the first substrate 210 on which the liquid seal pattern 270 is formed, and the first and second substrates 210 and 230 are subjected to a predetermined pressure and temperature conditions. Through the bonding step, the liquid seal pattern 270 described above is completely filled in the separation interval between the first and second column spacers 272a and 272b, and the extra sealant is filled in the buffer pattern 274, The sealant is cured to complete the seal pattern 270, and after the seal pattern 270 is completed, injecting the liquid crystal layer 250 into the display area inside the seal pattern 270. In this case, the liquid crystal layer 250 may be in contact with the first column spacer 272a.

The material forming the first and second column spacers 272a and 272b is selected from organic insulating materials.

As described above, in the present invention, the column spacer prevents contact between the seal pattern and the liquid crystal by the barrier rib structure, thereby effectively preventing the seal stain due to the chemical interaction between the liquid crystal material and the seal pattern. Since the width and height of the seal pattern may be adjusted by adjusting the thickness and the separation distance, the cell gap uniformity of the outer portion of the liquid crystal panel may be improved.

7 is a cross-sectional view showing an embodiment of a transverse electric field type liquid crystal display device structure including a seal pattern structure using a column spacer as a partition wall according to the present invention.

As illustrated, the display area and the non-display area are defined, and the first and second substrates 310 and 350 are disposed to face each other, and the liquid crystal layer 370 is disposed inside the first and second substrates 310 and 350. ), The gate electrode 312 and the common electrode 314 made of the first metal material are formed on the inner surface of the transparent substrate 300 of the first substrate 310 so as to be spaced apart from each other by a predetermined distance. The gate insulating layer 316 is formed on the entire surface of the substrate covering the gate electrode 312 and the common electrode 314, and the semiconductor layer 318 is formed at a position covering the gate electrode 312 on the gate insulating layer 316. The source electrode 320 and the drain electrode 322 are formed on the semiconductor layer 318 so as to be spaced apart from each other by a predetermined distance, and are connected to the source electrode 320 to form the data wire 324 and the data wire 324. The data pad 326 is formed at the end.

The gate electrode 312, the semiconductor layer 318, the source electrode 320, and the drain electrode 322 form a thin film transistor (T).

A protective layer 332 is disposed on the front surface of the substrate covering the thin film transistor T and has a drain contact hole 328 and a data contact hole 330 that partially expose the drain electrode 322 and the data pad 326, respectively. And a pixel electrode 334 connected to the drain electrode 322 through the drain contact hole 328 and a data pad 326 through the data contact hole 330 on the passivation layer 332. The data pad electrode 336 is formed, and the first alignment layer 338 is formed at the position covering the pixel electrode 334 in the display area.

Although not shown in the drawing, a gate wiring is formed by being connected to the gate electrode 312, a gate pad is positioned at one end of the gate wiring, and the gate wiring and the data wiring 324 cross each other so that the pixel region P is formed. In the pixel region P, the pixel electrode 334 and the common electrode 314 connected to the thin film transistor T are alternately disposed to intersect the interval between the pixel electrode 334 and the common electrode 314. In the voltage application, a horizontal electric field is formed, whereby the liquid crystal molecules 372 are arranged in a direction parallel to the substrate.

The black matrix 352 is formed in a region other than the pixel region P of the inner surface of the transparent substrate 300 of the second substrate 350, and is connected to the black matrix 352 to form the pixel region P. FIG. The color filter 354 is formed at a position corresponding to the color filter 354. An overcoat layer 356 is formed under the color filter 354, and a cell gap d is maintained under the overcoat layer 356. The column spacers 358 are formed to be spaced apart from each other at regular intervals. In particular, the present invention includes first and second column spacers 358a and 358b which are positioned at a boundary between the display area and the non-display area and are spaced apart from each other by a predetermined interval with the seal pattern 360 interposed therebetween. It is done.

Preferably, the material forming the black matrix 352 is selected from black resin, and the first and second column spacers 358a and 358b not only maintain a constant cell gap but also seal patterns 380. And prevents contact between the liquid crystal layer 370 and keeps the thickness and width of the seal pattern 380 constant.

A second alignment layer 360 is formed on the entire surface of the substrate covering the third column spacer 358c defined by the column spacer 358 positioned in the display area.

The third column spacer 358c may be positioned in a subpixel unit, which is a minimum unit for implementing a screen, or may be uniformly formed in a plurality of pixels.

In addition, the pattern spacer 358 is formed in the process of the second substrate 350 in which a separate transparent electrode is omitted. For example, the same material or a similar material as that of the overcoat layer 356 described above may be used. It may be formed by a photolithography process including an exposure, development process.

Although not shown in the drawings, the liquid crystal display further includes a backlight, which is a separate light source for supplying light.

However, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

As described above, the liquid crystal display device including the seal pattern structure using the column spacer according to the present invention as a partition wall has the following effects.

First, it prevents contact between the sealant and the liquid crystal material, and prevents deterioration of image quality such as seal stain.

Second, cell gap uniformity can be increased.

Third, while forming the seal pattern by the dispenser printing method of low material and equipment cost, it is possible to stably implement the pattern structure, it is possible to increase the product competitiveness.

Claims (9)

First and second substrates defined in a display area and a non-display area forming a periphery of the display area and disposed to face each other; First and second column spacers positioned at edge portions of the display area and the non-display area boundary area of the section between the first and second substrates and spaced apart from each other by a predetermined distance; A seal pattern formed in the separation section between the first and second column spacers; Liquid crystal layer interposed in the second column spacer between the first and second substrates And a plurality of buffer patterns having a trapezoidal shape spaced apart from each other by a predetermined interval and having a space in which the seal pattern material may be introduced. The method of claim 1, The separation distance between the first and second column spacers has a value corresponding to the seal pattern width. The method of claim 1, The liquid crystal display device is a transverse electric field type liquid crystal display device in which both a common electrode and a pixel electrode are formed on one substrate to drive a liquid crystal by a horizontal electric field formed in a section between the common electrode and the pixel electrode. The column spacer is formed on a substrate in which a separate electrode is omitted. The method of claim 1, The material constituting the first and second column spacers is selected from organic insulating materials. Forming a first and second column spacers such that the first substrate having the display area and the non-display area forming the periphery of the display area is spaced apart at regular intervals in a direction corresponding to each other in the boundary area of the display area and the non-display area; Steps; Filling a sealant in a section between the first and second column spacers; Bonding a second substrate on the sealant-filled first substrate; Interposing a liquid crystal layer in the second column spacer region between the first and second substrates And a plurality of buffer patterns having a trapezoid shape spaced apart from each other by a predetermined distance to the outside of the first column spacer, and a height of the first column spacer and the buffer pattern is lower than a filling height of the sealant. Method for manufacturing a display device. The method of claim 5, wherein The separation distance of the first and second column spacers has a value corresponding to the width of the seal pattern, and the formation height of the first and second column spacers has a value corresponding to a cell gap defined by the thickness of the liquid crystal layer. Method of manufacturing a liquid crystal display device. The method of claim 5, wherein And the seal pattern is filled by a scanning dispenser printing method. The method of claim 5, wherein A liquid crystal injection hole is formed at one side of the seal pattern, and the liquid crystal layer is interposed by an injection method through the liquid crystal injection hole. The method of claim 5, wherein The forming of the first and second column spacers may further include forming third column spacers for maintaining a plurality of cell gaps uniformly distributed in subpixel units, which are the smallest units for implementing the screen in the display area. Method for manufacturing a display device.

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