KR100777700B1 - A liquid crystal display and method manufacturing the same - Google Patents

Abstract

The liquid crystal display device includes a first substrate having an active region and a peripheral region, a second substrate facing the first substrate, a plurality of linear polymer pillars formed to maintain a gap between the first substrate, and the second substrate, and a first substrate. A ferroelectric liquid crystal material injected between the second substrate and the second substrate, a sealing pattern formed to enclose an edge between the first substrate and the second substrate to seal the ferroelectric liquid crystal material, and at least one between the active region and the sealing pattern. The region of includes a resistive protrusion formed with a different distribution density to uniformly inject the ferroelectric liquid crystal material. In this case, the sealing pattern includes one injection port sealing material and one exhaust port sealing material.

Injection port, exhaust port, liquid crystal material, resistance protrusion, polymer pillar

Description

Liquid crystal display and its manufacturing method {A LIQUID CRYSTAL DISPLAY AND METHOD MANUFACTURING THE SAME}

1A is a layout view of a substrate for a liquid crystal display device manufactured according to an embodiment of the present invention.

FIG. 1B is a cross-sectional view taken along line II-II 'of FIG. 1A,

2A to 2C are plan views of the liquid crystal display according to the first to third embodiments of the present invention, respectively.

3A and 3B illustrate a situation in which a liquid crystal material is injected depending on the width of the liquid crystal injection hole, respectively.

4A and 4B are plan views of the liquid crystal display according to the fourth and fifth embodiments of the present invention, respectively.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display (LCD) and a manufacturing method thereof, and more particularly, to a ferroelectric liquid crystal display and a manufacturing method thereof.

In general, a liquid crystal display device has a structure in which a liquid crystal material is injected between two substrates, and the amount of light transmitted is controlled by adjusting the intensity of an electric field applied thereto.

In order to display a moving image quality such as a cathode ray tube (CRT), the liquid crystal display should use a liquid crystal mode capable of optimizing fast response speed, wide viewing angle characteristics, high transmittance and contrast ratio.

TN mode using twisted-nematic (TN) liquid crystal method is the main liquid crystal mode widely used in the industry until now. In the TN liquid crystal mode, the switching response time of the liquid crystal alignment direction due to the dielectric anisotropy is slow from several tens of ms to several hundred ms, and due to the birefringence of the liquid crystal molecules, a change in contrast ratio and color transition depending on the position of the liquid crystal display (color shift), gray inversion (phenomena such as gray inversion) occurs, there is a problem that the viewing angle is narrow.

In order to solve this problem, a ferroelectric liquid crystal mode, which causes spontaneous polarization, has recently been used in liquid crystal displays. The ferroelectric liquid crystal mode is switched by the interaction between the spontaneous polarization moment of the liquid crystal and the electric field, so the response time is very fast, ranging from tens to hundreds of microseconds, which is suitable for high-speed moving images and switching in plane parallel to the substrate. It is a wide viewing angle mode with better viewing angle characteristics than the TN liquid crystal mode.

However, since the ferroelectric liquid crystal has a very high viscosity and cannot inject the liquid crystal at room temperature, the ferroelectric liquid crystal is injected by lowering the viscosity of the liquid crystal at a high temperature of 100 ° C or higher. In the ferroelectric liquid crystal mode, display is performed by using a birefringence effect. The transmittance is expressed by T (θ, λ) = Sin ² θ · Sin ² (π × Δn · d / λ), and thus Δn · d The transmittance becomes maximum when the / λ term is 0.5. Where θ is the angle at which the optical axis of the liquid crystal deviates from the direction of the layer normal, eigenvalue of the liquid crystal itself in a specific electric field, λ is the wavelength most sensitive to the human eye, 580 nm is commonly used, and Δn is 0.15 the refractive index anisotropy of the liquid crystal. And d represents a cell gap. Accordingly, when the cell gap d is obtained by applying this value, the cell gap is reduced as compared to the TN liquid crystal mode by about 2.0 μm, thereby making it difficult to inject the liquid crystal. The liquid crystal injection process is disadvantageous in terms of mass productivity since the liquid crystal injection time is increased by about 5-10 times compared to the TN liquid crystal mode. In addition, the ferroelectric liquid crystal mode has less fluidity than the TN liquid crystal mode and is a one-dimensional crystal structure having a layer structure, and thus the restoring force is weak. Therefore, when an orientation failure occurs due to an external impact such as a high temperature, the once broken orientation cannot be restored. Will cause a decrease.

The technical problem to be achieved by the present invention is to manufacture a liquid crystal display device having an impact resistant structure on the substrate itself so that the orientation of the liquid crystal molecules is not affected by an external impact.

Another technical problem to be achieved by the present invention is to shorten the injection process time of the ferroelectric liquid crystal material to improve the mass productivity of the manufacturing process of the liquid crystal display device.

In order to solve this problem, the present invention forms the polymer pillar as a plurality of linear stripes as the substrate spacer. In order to inject the liquid crystal material, the injection hole is formed in the front surface and the exhaust port is formed to have at least one or the protrusions for resistance are formed by varying the distribution density between the injection hole portion or the active region and the sealing pattern of the injection hole portion.

According to the present invention, a liquid crystal display includes a first substrate having an active region and a peripheral region, a second substrate facing the first substrate, a plurality of linear polymer pillars maintaining a distance between the first substrate and the second substrate, A ferroelectric liquid crystal material injected between the first substrate and the second substrate, and a sealing pattern formed to surround the edge between the first substrate and the second substrate to seal the ferroelectric liquid crystal material. In the liquid crystal display, the sealing pattern includes an injection hole sealing material and an exhaust hole sealing material for injecting the ferroelectric liquid crystal material, and the injection hole sealing material is formed on one of four sides of the edges of the first substrate and the second substrate. At least one secondary sealant is formed on the opposite surface of the injection port sealant.

At this time, the linear polymer column is formed to have a length longer than its width, and the length thereof is preferably equal to or less than the length of the active region.

In the liquid crystal display, resistive protrusions are formed with different distribution densities so as to uniformly inject ferroelectric liquid crystal materials into at least one region between the active region and the sealing pattern.

In this case, the sealing pattern includes one injection hole sealing material and one exhaust hole sealing material for injecting the ferroelectric liquid crystal material.                     

In this case, the resistance protrusion may be formed between the injection hole portion or the active region and the sealing pattern of the injection hole portion and the exhaust opening portion.

At this time, it is preferable that the product of the distribution density of the resistance protrusion in the injection hole and the distance from the injection hole to the resistance protrusion is constant.

In this case, the resistance protrusion may be formed of the same material as the sealing pattern.

Then, the liquid crystal display according to an exemplary embodiment of the present invention and a manufacturing method thereof will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

First, a schematic structure of a liquid crystal display substrate according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1A and 1B.

FIG. 1A is a layout view of a portion of an active matrix liquid crystal display device using a thin film transistor as a switching element, as viewed from the color filter substrate side, and FIG. 1B is a partial cross-sectional view taken along the line FF ′ of FIG. 1A.

On the array substrate 12 side of the liquid crystal display device 10, a plurality of pixel regions 26 arranged in a matrix are formed, and the plurality of pixel regions 26 form a display region 24 of an image. Although not shown in detail, thin film transistors (not shown) are formed in each pixel region 26. In this case, the gate electrode of the thin film transistor is connected to a gate line (not shown), and the drain electrode is connected to a data line (not shown). The source electrode of the thin film transistor is connected to a pixel electrode (not shown) formed in the pixel region 26. A gate pad (not shown) connected to the left end of the gate line (not shown) is formed outside the display area 24, and a data pad (not shown) connected to an upper end of the data line (not shown) is formed. Formed. Each of the gate pads and the data pads is grouped into groups to form a plurality of gate pads (not shown) and data pads. It is also connected to a driving circuit (not shown) through the terminal portion 14 formed on the outer periphery of the array substrate 12.

The color filter substrate 16 is formed to be smaller than the array substrate 12 by the area of the terminal portion 14, and is disposed to face the array substrate 12 with a predetermined cell gap to form the ferroelectric liquid crystal material 28. It is sealed. A color filter (not shown) of R (red), G (green), and B (blue) is formed on the color filter substrate 16 together with a common electrode (not shown). In addition, black matrixes 20 and 22 having a light shielding function are formed in the color filter substrate 16. The display unit black matrix 20 divides the plurality of pixel regions 26 in the display region 24 to prevent light leakage at the boundary of the pixel region 26, and shields the thin film transistors (not shown). It is used to prevent the light leakage current from occurring. In addition, the edge part black matrix 22 is provided to block unnecessary light outside the display area 24.

The array substrate 12 and the color filter substrate 16 are bonded to each other with a sealing material 18, and a plurality of linear polymer pillars 30 are formed side by side between the two substrates 12 and 16 to form stripes. The sealing material 18 serves as an adhesive for fixing the two substrates 12 and 16 and for the ferroelectric liquid crystal material 28 to be preserved between the two substrates 12 and 16. In this case, although not illustrated, the sealing material 18 includes an injection hole sealing material and an exhaust hole sealing material for injecting the ferroelectric liquid crystal material 28 between the two substrates 12 and 16. The linear polymer column 30 maintains a constant gap between the two substrates 12 and 16 to minimize the change of the cell gap due to external impact.

In the structure according to the embodiment of the present invention, a plurality of linear polymer pillars 30 are formed between the two substrates 12 and 16, thereby minimizing the variation in the gap between the two substrates. Therefore, it is possible to prevent orientation breakage of the ferroelectric liquid crystal material 28 caused by external impact.

Next, a structure of the liquid crystal display according to the first to third embodiments of the present invention will be described with reference to FIGS. 2A to 2C.

As shown in FIGS. 2A to 2C, a plurality of linear polymer pillars 30 for space keeping the two substrates 12 and 16 in parallel are formed between the two substrates 12 and 16 to form stripes. The edges of the two substrates 12 and 16 have a sealing pattern 18 formed thereon. The polymer pillar 30 is formed in a linear shape longer than its width, and the length thereof is equal to or less than the size of the display area 24. The sealing pattern 18 is formed to surround the edges of the substrates 12 and 16 except for the injection holes 32 and the exhaust holes 34 for injecting the ferroelectric liquid crystal material 28 between the two substrates 12 and 16. have. The injection holes 32 and the exhaust holes 34 are formed to face each other at both ends of the linear polymer column 30 so as to smoothly inject the ferroelectric liquid crystal material 28.

In the first to third embodiments of the present invention, the arrangement of the inlet 32 and the outlet 34 of the liquid crystal material 28 is different.

Next, an arrangement of the injection holes 32 and the exhaust holes 34 for injecting the ferroelectric liquid crystal material 28 according to the first to third embodiments of the present invention will be described with reference to FIGS. 2A to 2C.

2A illustrates a first embodiment of the present invention, in which an injection hole 32 is formed at a front surface thereof, and an exhaust hole 34 is formed at each corner portion of a pad part (not shown).

2B is a second embodiment of the present invention, in which the inlet 32 is formed in the front of the pad portion (not shown), and one exhaust port 34 is formed in each corner portion opposite the pad portion.

FIG. 2C shows a third embodiment of the present invention in which an injection hole 32 is formed on the front surface of the substrate and one exhaust port 34 is formed in the center portion of the pad portion (not shown).

The injection hole 32 formed on the front surface allows the injected ferroelectric liquid crystal material 28 to be injected at the same speed between all of the linear polymer pillars 30, and the exhaust hole 34 is formed at the same time as the injection of the ferroelectric liquid crystal material 28. The air is discharged through 34 to reduce the degree of vacuum of the portion into which the ferroelectric liquid crystal material 28 is not injected, thereby creating a pressure difference in and out of the substrate, and allowing the ferroelectric liquid crystal material 28 to be injected by the pressure difference.

In the structure of the liquid crystal display device, in the liquid crystal display device in which the polymer pillar 30 for maintaining the substrate gap is formed in a stripe shape, the injection hole 32 is formed on the entire surface and one or two exhaust ports 34 are formed to form a ferroelectric liquid crystal material ( The injection time of the liquid crystal material 28 can be shortened by injecting 28.

Next, a method of manufacturing the liquid crystal display device according to the first to third embodiments of the present invention will be described.

Wiring patterns, switching elements (in the case of an active matrix type), and the like are formed on the array substrate 12, and color filters, black matrices, and the like are formed on the color filter substrate 16 to complete the two substrates 12. 16. .

The viscous polymer material is coated and patterned on the array substrate 12 to form a plurality of linear polymer pillars 30. Here, when the polymer pillar 30 is formed by using a photosensitive polymer material, the polymer pillar 30 may be coated, then exposed and developed using a mask to obtain the polymer pillar 30. If not, after coating the polymer material, a layer of photoresist is applied, exposed and developed, and the polymer material is etched to form the polymer pillar 30.

In addition, the color filter substrate 16 is formed with a sealing pattern 18 to surround the edges of the substrates 12 and 16 except for the injection holes 32 and the exhaust holes 34 for injecting the ferroelectric liquid crystal material 28. .

At this time, the injection hole 32 is formed by opening the entire one side of the four edges of the substrate (12, 16) and the exhaust port 34 is formed at each corner of the opposite side of the injection hole 32, or one at the center portion Form.

Next, the substrate 12 on which the polymer pillars 30 are formed is hard baked to harden the polymer pillars 30 to have a certain strength.                     

Next, the two substrates 12 and 16 are aligned and heat-compressed so that the two substrates 12 and 16 are bonded by the polymer pillar 30 and the sealing pattern 18 of the softened array substrate 12. In this case, since the interval between the substrates 12 and 16 is uniformly maintained by the polymer pillars 30, the cell spacing is hardly changed even when an impact is applied from the outside.

Next, the injection holes 32 formed between the two substrates 12 and 16 are immersed in a container filled with the ferroelectric liquid crystal material 28, and the air is discharged through the exhaust holes 34, and the two substrates 12 and 16 are separated from each other. The air pressure in the space surrounded by the sealing pattern 18 is dropped to form a pressure difference between the inside and the outside of the substrates 12 and 16. Then, the ferroelectric liquid crystal material 28 is sucked into the substrate due to the pressure difference in and out of the substrate.

When the injection process is completed, the injection hole 32 and the exhaust hole 34 are sealed so that the injected ferroelectric liquid crystal material 28 does not flow out.

In the method of manufacturing the liquid crystal display, the ferroelectric liquid crystal material 28 may be smoothly injected by forming the injection holes 32 and the at least one exhaust port 34 formed on the entire surface around the substrates 12 and 16. In addition, the polymer pillars 30 may be formed in a stripe shape between the two substrates 12 and 16, thereby minimizing the variation in the gap between the two substrates.

However, in the process of sealing the injection hole 32 and the exhaust port 34 so that the injected ferroelectric liquid crystal material 28 does not flow out, the sealing material 18 invades the inside of the sealing line to contaminate the ferroelectric liquid crystal material 28 or Cause other problems. This is a problem that occurs because the injection hole 32 is too wide. In order to solve this problem, the injection hole 32 should be narrowly formed, but if the injection hole 32 is narrowly formed, a portion that is not filled with the liquid crystal material 28 inside the sealing pattern 18 may occur. The reason for this will be described with reference to FIGS. 3A and 3B.

3A and 3B illustrate an injection situation of the liquid crystal material according to the width of the injection hole.

As shown in FIG. 3A, when the injection holes 32 are formed on the entire surface of the substrate for injecting the liquid crystal material and one exhaust port 34 is formed on each corner portion thereof, the injection holes 32 are formed on the front surface of the substrate. The liquid crystal material introduced through the injection hole 32 is horizontally injected at the same speed from the beginning by the pressure difference between the substrate and the substrate formed through the exhaust. Therefore, the liquid crystal material is evenly filled in the entire area inside the sealing pattern 18.

However, as illustrated in FIG. 3B, when one injection hole 32 for injecting a liquid crystal material is formed in the center portion of the substrate and one exhaust hole 34 is formed in each corner portion, the injection hole ( The liquid crystal material introduced through the 32 flows in a semicircular shape around the injection hole 32 due to the difference in air pressure inside and outside the substrate formed through the exhaust to fill the inside of the sealing pattern 18. However, if the liquid crystal material that reaches the exhaust port 34 before the inside of the sealing pattern 18 is filled with the liquid crystal material blocks the exhaust port 34, no further exhaustion is possible. Left as space. The fourth and fifth embodiments present a means to solve this problem.                     

Next, the liquid crystal display according to the fourth and fifth embodiments of the present invention in consideration of the above-described injection situation of the liquid crystal material will be described with reference to FIGS. 4A and 4B.

In the fourth and fifth embodiments, the resistive protrusion 36 is formed in the injection hole 32 or both the injection hole 32 and the exhaust hole 34 so that the liquid crystal material is horizontally injected.

4A is a fourth embodiment of the present invention, in which a resistive projection 36 is formed between the display region 24 and the sealing pattern 18 of a portion of the injection hole 32 with different distribution densities.

4B is a fifth embodiment of the present invention formed between the display region 24 and the sealing pattern 18 of both the inlet 32 and the exhaust port 34 by varying the distribution density of the resistive projections 36. It is. The resistance projection 36 is made of the same material as the sealing pattern 18.

The resistance projections 36 are formed between the display region 24 and the sealing pattern 18 in order not to affect the aperture ratio. The distribution density of the resistance projections 36 is higher in the vicinity of the injection hole 32, and the distribution density of the resistance projections 36 is relatively lower in the distance away from the injection hole 32 than in the vicinity. The ferroelectric liquid crystal material 28 introduced through the injection hole 32 collides with the resistance protrusion 36 to reduce the injection speed. At this time, since the distribution density of the resistance protrusion 36 is lower than that near from the injection hole 32, the decrease in the injection speed is smaller as the distance from the injection hole 32 decreases. Therefore, by appropriately adjusting the distribution density of the resistance projection 36, the injection speed of the liquid crystal material 28 can be uniformly injected throughout the substrate. That is, the line in which the liquid crystal material 28 is filled may initially form a semicircular shape and gradually become perpendicular to the polymer pillar 30 to be a straight line.                     

In this way, even if the injection hole 32 is formed narrowly, the same effect as the formation of the injection hole 32 in the whole one surface can be acquired. In other words, in the structure in which the linear polymer pillars 30 are formed as spacers, ferroelectric liquid crystals are formed by varying the distribution density of the resistance projections 36 in the injection hole 32 or the injection hole 32 and the exhaust hole 34. Since the injection speed of the material 28 can be equalized, the ferroelectric liquid crystal material 28 can be injected to the ends of all the polymer pillars 30.

Next, a method of determining the distribution density of the resistive protrusion in the liquid crystal display according to the second exemplary embodiment of the present invention will be described with reference to FIG. 4B.

As shown in FIG. 4B, first, the vertical distance between the center line of the resistance projection 36 from the center line of the injection hole 32 is d [cm] and the end of the linear polymer column 30 farthest from the injection hole 32. The distance is referred to as L [cm], and the density D [cm- ² ] of the resistance projection 36 is defined by the following principle.

The injected liquid crystal material proceeds to an isotropic state if there are no obstacles inside the injection hole, and proceeds to anisotropic state if there is an obstacle therein. The amount of liquid crystal material injected in this state changes depending on the density of obstacles. By this principle, in the case of one injection hole, the density of obstacles can be increased at a short injection distance to reduce the amount of passage of liquid crystal material, and at a long injection distance, the density of obstacles can be reduced to allow passage of liquid crystal material. The amount can be increased. According to this principle, the density (D) of the resistance protrusion is a ratio between the distance (r) between the centerline of the resistance protrusion and the volume (V) through which the liquid crystal material passes between the resistance protrusions. That is, it is defined as r / V [cm ^-2 ]. At this time, it can be seen that the density (D) of the resistance projections changes depending on L and d.

Then, the injection time reaching the resistance projection 36 from the injection hole 32 is t [s], the injection speed is v [m / s], and the density of the resistance projection at the closest position to the injection hole 32 is D1. [Cm ^-2 ], the density of the resistance sealing point farthest from the injection port is called D2 [cm ^-2 ], and the range of the liquid crystal amount F [cm ^-3 ] passing through the resistance protrusion 36 is as follows. Obtain

First, since the injection time t [s] is in the range of L >> d, it is represented by Equation 1 below.

The liquid crystal amount F passing through the resistance protrusion 36 is proportional to the injection time t and the injection speed v and is inversely proportional to the density D of the resistance protrusion. The range of the amount (F) is shown in equation (2).

At this time, since the amount of liquid crystal passing through the resistance protrusion 36 must be constant at all positions, the following Equation 3 is established.                     

As can be seen from Equation 3, it can be seen that the product of the density of the resistance protrusion and the distance from the injection hole to the resistance protrusion is constant. That is, d, L can be measured, D1 (D2) can be calculated, and then D2 (D1) can be calculated.

Then, the method of forming a resistance protrusion is demonstrated. As a method of forming the resistive projection, there are a method of forming through a photographic process and a method of forming using a dispenser.

First, the method of forming a resistive protrusion using a mask is demonstrated.

The resistive projection pattern film is applied to the region where the resistive projection is formed, and then the resistive projection film is exposed and developed by using a mask in which the resistive projection is formed at the distribution density interval of the resistive projection described above. Form.

Next, a method of forming the resistive protrusion using the dispenser will be described.

The resistive protrusion is formed by dropping the resistive protrusion from the dispenser nozzle on the portion formed at the distribution density interval of the resistive protrusion described above.

The resistance protrusion may be formed of the same material as the sealing pattern, and the resistance protrusion may be simultaneously formed when the sealing pattern is formed, thereby increasing process efficiency.

As described above, according to the present invention, in the liquid crystal display device in which a plurality of linear polymer pillars are arranged side by side as a spacer, the time required for injecting the ferroelectric liquid crystal material may be shortened by forming the injection hole at the front and the at least one exhaust hole. . In addition, in the liquid crystal display having one injection hole and one exhaust hole, a ferroelectric liquid crystal material may be smoothly injected by forming resistance protrusions having different distribution densities under the edge black matrix of the injection hole or the injection hole and the discharge hole. By minimizing the inlet and the outlet, defects of the liquid crystal material due to penetration of the sealant during the liquid crystal injection process can be minimized.

Claims (16)

A first substrate having an active region and a peripheral region, A second substrate facing the first substrate, Maintaining a gap between the first substrate and the second substrate, a plurality of linear polymer pillars having a length longer than the width thereof; A ferroelectric liquid crystal material injected between the first substrate and the second substrate, In the liquid crystal display device including a sealing pattern formed to surround the edge between the first substrate and the second substrate to seal the ferroelectric liquid crystal material, The sealing pattern includes an injection port sealing material and an exhaust port sealing material for injecting the ferroelectric liquid crystal material, The injection hole sealing material is formed on the entire surface of one of the four sides of the edge of the first substrate and the second substrate, and at least one exhaust port sealing material is formed on the opposite surface of the injection hole sealing material. delete In claim 1, The length of the linear polymer pillar is less than the length of the active region. A first substrate having an active region and a peripheral region, A second substrate facing the substrate, A plurality of linear polymer pillars formed to maintain a gap between the first substrate and the second substrate, A ferroelectric liquid crystal material injected between the first substrate and the second substrate, A sealing pattern formed to enclose an edge between the first substrate and the second substrate to seal the ferroelectric liquid crystal material; Resistance protrusions having different distribution densities so as to uniformly inject the ferroelectric liquid crystal material into at least one region between the active region and the sealing pattern. Liquid crystal display comprising a. In claim 4, The sealing pattern may include one injection hole sealing material and one discharge hole sealing material for injecting the ferroelectric liquid crystal material. In claim 4, And a product of a distribution density of the resistance protrusion and a distance from the injection hole to the resistance protrusion. In claim 4, And the resistance protrusion is formed in the injection hole portion or both the exhaust hole portion and the injection hole portion. In claim 4, And the resistance protrusion is made of the same material as the sealing pattern. Forming a plurality of linear polymer columns made of a polymer material on the first substrate, Forming a sealing pattern except an inlet and an exhaust port for injecting the ferroelectric liquid crystal material around the active region of the second substrate; Forming a resistive protrusion by varying a distribution density between the active region and the sealing pattern; Hard baking the first substrate to thermally harden the polymer pillar; Thermally compressing the first substrate and the second substrate to form a cell gap; Method of manufacturing a liquid crystal display comprising a. In claim 9, And one injection hole and one exhaust hole, respectively. In claim 9, And forming the resistance protrusion so that the product of the density of the resistance protrusion and the distance from the injection hole to the resistance protrusion is constant. In claim 9, The said polymeric material is a manufacturing method of the liquid crystal display device which uses a photosensitive material. In claim 12, Forming the polymer pillar, Coating the polymer material on the first substrate, And exposing the first substrate using a mask having the polymer pillar pattern formed thereon and developing the polymer material. The method of claim 9 or 11, The resistance projection forming step, Applying a resistive projection pattern film to a region where the resistive projection is formed, Exposing and developing the resistive projection pattern film using the mask on which the resistive projection is formed. The method of claim 9 or 11, The resistance projection forming step, And dropping the resistive protrusion from the dispenser nozzle in a distribution density region of the resistive protrusion. The method of claim 15, And the resistive protrusion is formed simultaneously with the sealing pattern.

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