KR100563382B1 - Method for hardening a sealant of LCD device and UV radiation apparatus used therefor - Google Patents

Abstract

In the method of curing the sealing agent for a liquid crystal display device according to the present invention, a method of curing the ultraviolet curable sealing agent 140 interposed between a pair of square transparent substrates to be positioned under the light shielding film 130 formed on the transparent substrate 110. Is; Irradiate ultraviolet rays to the entire surface of the transparent substrate in the upper space of the transparent substrate 110, but by inclining the transparent substrate 110 so that the ultraviolet light is obliquely incident on the surface of the transparent substrate 110, the sealing agent 140 is cured. It is done. In terms of complexity and stability of the lamp installation, it is much more advantageous to tilt the transparent substrate 110 as in the present invention than to tilt the UV lamp as in the prior art. In addition, since the ultraviolet irradiation unit for full-surface irradiation may be used as it is, the implementation is very simple. When the diagonal 110a is alternately inclined to both sides, the sealing agent 140 may be cured by only two inclinations, thereby shortening the curing time.

Light-shielding film, curing, sealing agent, ultraviolet ray, thermosetting, liquid crystal, tilt irradiation, scanning

Description

Method for hardening a sealing agent for a liquid crystal display device and an ultraviolet irradiation device used therefor {Method for hardening a sealant of LCD device and UV radiation apparatus used therefor}             

1 to 4 are views for explaining a conventional curing method for a sealing agent for a liquid crystal display device;

5A and 5B are views for explaining a method of curing a sealing agent for a liquid crystal display device according to a first embodiment of the present invention;

6A to 6C are views for explaining a method of curing a sealing agent for a liquid crystal display device according to a second embodiment of the present invention;

7A and 7B are views for explaining a curing agent curing method for a liquid crystal display device according to a third embodiment of the present invention;

8A to 8C are views for explaining a curing agent curing method for a liquid crystal display device according to a fourth embodiment of the present invention;

9 is a view for explaining a curing agent curing method for a liquid crystal display device according to a fifth embodiment of the present invention;

 10 is a view for explaining a curing agent curing method for a liquid crystal display device according to a sixth embodiment of the present invention;

11 is a view for explaining an example of an ultraviolet irradiation device used in the method for curing the sealant for a liquid crystal display device according to the present invention;

12 is a view for explaining another example of the ultraviolet irradiation device used in the method for curing the sealant for a liquid crystal display device according to the present invention.

<Description of reference numerals and reference numerals for the main parts of the drawings>

10, 110: transparent substrate 20: active cell

30, 130, 130 ': light shielding film 40, 140: sealing agent

140a: ultraviolet curing sealant 140b: thermosetting sealing agent

150: plate 160: motor

170: cylinder

180a, 180b, 180c, 180d, 185a, 185b: UV lamp

187: bar UV lamp 190: reflector

200: concentrated lens 220: concentrated reflector

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of curing a sealing agent for liquid crystal display devices, and more particularly, to a method of curing a sealing agent under a light shielding film (Black Matrix, BM). The present invention also relates to an ultraviolet irradiation device used to cure the sealing agent.

Currently, the LCD business is enjoying the best boom and the supply is falling compared to the demand so that the output will soon become a corporate profit. To improve productivity at this point, LCD manufacturers are trying to reduce production costs and improve production yields by printing sealants under the black matrix to improve substrate margins. However, when the sealant is printed under the light shielding film, various problems occur in the curing of the sealant.

1 to 4 are views for explaining a conventional curing method of a sealing agent for a liquid crystal display device.

As shown in FIG. 1, when the sealant 40 is printed on the outside of the cell 20, the margin of the substrate 10 is reduced. Therefore, producers print the sealing agent 40 under the black matrix 30 as shown in FIG. 2 to obtain the maximum margin.

The light shielding film 30 exists around the boundary of each of the RGB (Red, Green, Blue) regions and around the active cell 20 to block the light, thereby contributing to improving the clarity of the image expression. Therefore, when the ultraviolet curable sealing agent is used as the sealing agent 40, as shown in FIG. 2, the ultraviolet light is blocked by the light shielding film 30, and thus the sealing agent 40 cannot be reached.

Therefore, inclination irradiation is performed as shown in FIG. However, in this case, since the ultraviolet light does not reach the opposite side with the ultraviolet lamp as shown, in order to cure the sealant 40, it is necessary to perform inclined irradiation on each corner of the substrate 10 as shown in FIG. There is a hassle.

In addition, since the UV lamp is inclined to the substrate 10 in a manner of irradiation, the amount of light itself is reduced, so that the curing time is long. In addition, since the substrate 10 is exposed to ultraviolet rays for a long time, there is a risk of substrate deformation due to liquid crystal deterioration and temperature rise. In addition, since the unit for the inclination irradiation is required separately in addition to the unit for the front irradiation is complicated installation.

Accordingly, the present invention is to provide a method for curing a sealing agent for a liquid crystal display device that can easily cure the sealing agent by a simple method when printing the sealing agent under the light shielding film in order to maximize the margin of the substrate. There is.

In addition, another technical problem to be achieved by the present invention is to provide an ultraviolet irradiation device capable of curing the sealing agent more efficiently.

In the method of curing the sealing agent for a liquid crystal display device according to the first example of the present invention for achieving the above technical problem, the ultraviolet curing type sealing agent interposed between a pair of square transparent substrate to be positioned below the light shielding film formed on the transparent substrate. How to do; Irradiating ultraviolet rays to the entire surface of the transparent substrate in the upper space of the transparent substrate while inclining the transparent substrate so that the oblique light incident on the surface of the transparent substrate while irradiating the ultraviolet light to cure the sealing agent.

In the method of curing the sealing agent for a liquid crystal display device according to the second embodiment of the present invention for achieving the above technical problem, the ultraviolet curable sealing agent interposed between a pair of square transparent substrate to be positioned under the light shielding film formed on the transparent substrate How to do; UV lamps are inclinedly irradiated in the -Y direction in the upper upper space of the transparent substrate, in the + Y direction in the lower upper space, in the + X direction in the upper left space, and in the -X direction in the upper right space, respectively. It is characterized in that the sealing agent is cured by ultraviolet rays irradiated from the ultraviolet lamp by scanning either one of the ultraviolet lamp or the transparent substrate four times in the ± X and ± Y direction, or two scans in the ± diagonal direction.

According to another aspect of the present invention, there is provided a method of curing a sealing agent for a liquid crystal display device, the inclination of which is inclined in the -Y direction to the upper or lower space of the transparent substrate and the inclination in the + Y direction. UV lamps to be irradiated are installed side by side up and down, and on the left or right side of the transparent substrate, UV lamps inclined in the + X direction and UV lamps inclined in the -X direction are installed side to side, and The UV lamp or the transparent substrate is irradiated from the UV lamp by scanning either once in either the ± X direction or the ± Y direction, either twice in either the ± X direction or the ± Y direction. It is characterized by curing the sealing agent with ultraviolet rays.

In the second and third examples, the ultraviolet lamps installed on the upper side and the lower side have a long rod shape left and right, and the ultraviolet lamps installed on the left and right sides have a long rod shape up and down.

In the method of curing the sealing agent for a liquid crystal display device according to the fourth embodiment of the present invention for achieving the above technical problem, the ultraviolet curing type sealing agent interposed between a pair of square transparent substrates to be positioned below the light shielding film formed on the transparent substrate. How to do; An ultraviolet lamp for obliquely irradiating diagonally in an upper space of any one of two vertices of the upper side of the transparent substrate is installed, and an ultraviolet lamp for obliquely irradiating diagonally in a + diagonal direction is installed in an upper space of the lower vertex located in the diagonal direction, Any one of the ultraviolet irradiation lamp or the transparent substrate is scanned twice in either the ± X direction or the ± Y direction once, or twice in the diagonal direction to the ultraviolet light emitted from the ultraviolet lamp. It is characterized by curing the sealing agent.

According to a fifth aspect of the present invention, there is provided a method for curing a sealing agent for a liquid crystal display device, wherein the ultraviolet curable sealing agent interposed between a pair of square transparent substrates is positioned under a light shielding film formed on a transparent substrate. How to do; An ultraviolet lamp inclined in a diagonal direction and an ultraviolet lamp inclined in a + diagonal direction are installed side by side in a diagonal direction in an upper space of any one of the vertices of the transparent substrate, so that either the ultraviolet lamp or the transparent substrate is installed. Scan the sealing agent with ultraviolet rays irradiated from the ultraviolet lamp by scanning once in any of the ± X directions, scanning once in any of the ± Y directions, or scanning once in any of the diagonal directions. It is characterized by curing.

In the fourth and fifth examples, the ultraviolet lamp preferably has a long rod shape in a direction perpendicular to the diagonal direction.

In the method of curing the sealing agent for a liquid crystal display device according to the sixth embodiment of the present invention for achieving the above technical problem, the ultraviolet curable sealing agent interposed between a pair of square transparent substrates to be positioned below the light shielding film formed on the transparent substrate. How to do; UV light is installed in the upper space of the transparent substrate in parallel with the rod-shaped UV lamp at least equal to the width of the transparent substrate, and between the ultraviolet lamp and the transparent substrate is irradiated perpendicularly from the ultraviolet lamp to the transparent substrate Further, by changing the path of the optical path changing means for adjusting the angle of incidence to the transparent substrate, by selectively rotating either the ultraviolet lamp or the transparent substrate and the vertical irradiation and inclined irradiation selectively It is characterized by curing the sealing agent with ultraviolet rays irradiated from the ultraviolet lamp.

A sealing agent curing method for a liquid crystal display device according to a seventh example of the present invention for achieving the above technical problem is a method for curing the sealing agent interposed between a pair of square transparent substrate; UV curable sealant is printed on the outer side, and a pair of transparent substrates are printed and bonded around the inner cell area by thermosetting sealant, and then the UV curable sealant is first cured, and then the thermosetting sealant is cured. It is characterized by.

According to another aspect of the present invention, there is provided a method of curing a sealing agent for a liquid crystal display device, the method of curing an ultraviolet curable sealant positioned below a light shielding film formed on a transparent substrate; Forming a plurality of windows through which ultraviolet light can pass through the light shielding film is irradiated with ultraviolet light to the window on the light shielding film to cure the sealing agent.

An ultraviolet irradiating apparatus according to an embodiment of the present invention for achieving the above another technical problem, the device used to cure the ultraviolet curable sealing agent for a liquid crystal display device interposed between a pair of transparent substrate to be located under the light shielding film formed on the transparent substrate Is; Ultraviolet lamps that emit ultraviolet light; And a concentrated lens installed between the ultraviolet lamp and the transparent substrate to collect ultraviolet rays on the transparent substrate.

Here, the ultraviolet lamp is a rod-shaped lamp, the concentrated lens is preferably arranged in parallel with the ultraviolet lamp and a cylindrical lens convex toward the transparent substrate.

 The ultraviolet irradiation device according to another embodiment of the present invention for achieving the above another technical problem is used to cure the ultraviolet curable sealing agent for a liquid crystal display device interposed between a pair of transparent substrate to be positioned under the light shielding film formed on the transparent substrate. Device; Ultraviolet lamps that emit ultraviolet light; And a concentrated reflection plate positioned behind the ultraviolet lamp and reflecting out of the ultraviolet light emitted from the ultraviolet lamp in the opposite direction of the transparent substrate toward the transparent substrate to collect on the transparent substrate in the form of a line beam.

Here, the ultraviolet lamp is a rod-shaped lamp, the concentrated reflector is preferably arranged in parallel with the ultraviolet lamp and the cylindrical reflector concave toward the ultraviolet lamp.

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

Example 1

5A and 5B are views for explaining a method of curing a sealing agent for a liquid crystal display device according to a first embodiment of the present invention.

5A and 5B, the present embodiment is characterized in that the transparent substrate 110, which is an object, is tilted, unlike the conventional case of tilting a light source. In detail, the transparent substrate 110 is placed on the plate 150 and irradiated with ultraviolet rays perpendicular to the entire surface of the transparent substrate 110 in the upper space of the transparent substrate 110 as an ultraviolet irradiation unit for the entire surface irradiation. In the meantime, the plate 150 is tilted in four directions of ± X and ± Y using the motor 160 or the cylinder 170.

Then, unlike the related art, ultraviolet rays may be obliquely incident on the transparent substrate 110 without separately providing an ultraviolet irradiation unit for inclined irradiation. Since the plate 150 is tilted once in the opposite direction to each other, there is virtually no difference in the amount of light at the position A and the position B.

In terms of complexity and stability of the lamp installation, it is much more advantageous to tilt the transparent substrate 110 as in the present invention than to tilt the UV lamp as in the prior art. In addition, since the ultraviolet irradiation unit for full-surface irradiation may be used as it is, the implementation is very simple.

On the other hand, the curing time is reduced in the present embodiment than the conventional method of providing a UV unit for scanning the inclination, but the time is not shortened because it still needs to tilt the substrate 110 in all directions.

In order to further improve this problem, as shown in FIG. 5B, when the diagonal 110a is alternately inclined to both sides, the sealing agent 140 may be cured by only two inclinations, thereby shortening the curing time. You can.

Example 2

6A to 6C are diagrams for describing a method of curing a sealing agent for a liquid crystal display device according to a second embodiment of the present invention.

Referring to FIG. 6A, an ultraviolet lamp 180a for obliquely irradiating in the -Y direction in the upper space of the upper side of the transparent substrate 110 and an ultraviolet lamp 180b for obliquely irradiating in the + Y direction in the lower space of the upper side of the transparent substrate 110, the upper left side The ultraviolet lamp 180c for obliquely irradiating in the + X direction is provided in the space, and the ultraviolet lamp 180d for obliquely irradiating in the -X direction is provided in the upper right space.

The UV lamp at this time is installed on the upper side and the lower side so as to cover the entire surface of the transparent substrate 110 during the scan (180a, 180b) has a long rod shape to the left and right, and to the left and right It is preferable that the installed ones 180c and 180d have a long rod shape.

As shown in FIG. 6B, the ultraviolet lamp 180d inclined in the −X direction hardens the right portion of the sealing agent 40 (FIG. 3), and the ultraviolet lamp 180c inclined in the + X direction is sealed. The left part of the agent (40 in FIG. 3) is cured.

In this state, if one of the ultraviolet lamps 180a, 180b, 180c, 180d or the transparent substrate 110 is scanned four times in the ± X and ± Y directions, the ultraviolet rays reach the four sides of the sealing agent (40 in FIG. 3). Because of this, smooth sealant curing takes place. The same effect can be obtained by selecting either the diagonal direction tilted to the upper right or the diagonal direction tilted to the upper left and scanning twice in the ± diagonal direction. The ultraviolet lamps 180a, 180b, 180c, and 180d do not move individually, but move together as a set.

On the other hand, as shown in Figure 6a, the UV lamps do not need to be installed on each of the upper, lower, left, and right sides of the transparent substrate 110, it may be provided as shown in Figure 6c.

That is, in the upper space or the lower space of the transparent substrate 110, the ultraviolet lamp 180a for inclined irradiation in the -Y direction and the ultraviolet lamp 180b for inclining irradiation in the + Y direction are installed side by side, and the transparent substrate ( An ultraviolet lamp 180c for obliquely irradiating in the + X direction and an ultraviolet lamp 180d for obliquely irradiating in the -X direction may be provided on the left or right upper side of the 110 side by side.

At this time, either the ultraviolet lamp (180a, 180b, 180c, 180d) or the transparent substrate 110 is moved and scanned twice in any one of the ± X direction and the ± Y direction once, Scan one time in either of the diagonal directions.

Example 3

7A and 7B are diagrams for describing a method of curing a sealing agent for a liquid crystal display device according to a third embodiment of the present invention.

Referring to FIG. 7A, an ultraviolet lamp 185a for obliquely irradiating diagonally in an upper space of one of the two vertices of the upper side of the transparent substrate 110 is disposed in the upper vertex of the lower vertex located in the diagonal direction. UV lamp 185b for oblique irradiation is installed.

In this case, the scanning method scans any one of the ultraviolet lamps 185a and 185b or the transparent substrate 110 twice in either the X-direction or the Y-direction one time, or in the ± diagonal direction. Just scan twice.

The ultraviolet lamps 185a and 185b may have a long rod shape in a direction perpendicular to the diagonal direction so as to cover the entire surface of the transparent substrate 110 at the time of scanning.

 On the other hand, as shown in Figure 7a, both of the ultraviolet lamps in the diagonal direction of the transparent substrate 110 need not be installed, it may be provided in the same manner as in Figure 7b.

That is, the ultraviolet lamp 185a for obliquely irradiating in the diagonal direction and the ultraviolet lamp 185b for irradiating obliquely in the + diagonal direction may be installed side by side in a diagonal direction in the upper space of any one of the vertices of the transparent substrate 110. .

At this time, either the ultraviolet lamps 185a, 185b or the transparent substrate 110 are scanned once in any of the ± X directions, or scanned once in any of the ± Y directions, or ± diagonal directions. This can be done once in either direction.

Example 4

8A to 8C are diagrams for describing a method of curing a sealing agent for a liquid crystal display device according to a fourth embodiment of the present invention.

8A to 8C, the bar-shaped ultraviolet lamp 187 is installed in parallel to the transparent substrate 110 in the upper space of the transparent substrate 110. The length of the bar ultraviolet lamp 187 should be at least greater than the width of the transparent substrate 110. In addition, an optical path changing means capable of adjusting an angle incident on the transparent substrate 110 by changing a path of ultraviolet rays irradiated vertically from the ultraviolet lamp 187 to the transparent substrate 110 includes an ultraviolet lamp 187 and a transparent substrate. It is further installed between the (110).

8B and 8C illustrate a case in which the reflector 190 is used as an example of the optical path changing means. As the light path changing means, a prism or a light split may be used in addition to the reflective plate 190.

When the UV lamp 817 or the transparent substrate 110 is rotated horizontally, the entire surface of the transparent substrate 110 is scanned. Since the vertical irradiation may be disturbed by the reflecting plate 190, when the reflecting plate 190 is installed to be rotatable so as to be vertically arranged with respect to the transparent substrate 110, the inclined irradiation and the vertical irradiation are caused by rotating the reflecting plate 190. You can do both.

Example 5

9 is a view for explaining a curing agent curing method for a liquid crystal display device according to a fifth embodiment of the present invention.

If the substrate bonding process is performed in a vacuum and the sealing agent is not cured in a short time, deformation or bursting of the sealing agent may occur due to the pressure difference between the inside and the outside surrounded by the sealing agent.

Therefore, the present embodiment solves this problem by using the thermosetting sealing agent 140b and the ultraviolet curing sealing agent 140a capable of completing curing in a short time, and further aims to maximize the margin of the substrate. .

Specifically, referring to FIG. 9, an ultraviolet curable sealing agent 140a is printed outside the transparent substrate 110, and a thermosetting sealing agent 140b is printed around the inner cell 120.

When the ultraviolet curable sealing agent 140a is first cured using ultraviolet rays immediately after the substrate bonding process, the inside of the UV curable sealing agent 140a is kept in vacuum even after bonding, thereby deforming and bursting the thermosetting sealing agent 140b. Can be prevented. Therefore, the thermosetting sealing agent 140b may be made slow after curing the ultraviolet curing sealing agent 140a.

According to the present embodiment, since the ultraviolet curing sealant 140a is first cured to support the substrate 110, the substrate 110 can be prevented from twisting during the post-process, and the substrate bonding portion can be prevented from being contaminated. have.

In addition, since the thermosetting sealing agent 140b is cured by heat, the thermosetting sealing agent 140b is not interrupted by the light blocking film 130 or other films during curing. Therefore, since the sealing agent can be formed under the light shielding film 130, the substrate margin can be increased.

Example 6

10 is a view for explaining a curing agent curing method for a liquid crystal display device according to a sixth embodiment of the present invention.

Referring to FIG. 10, unlike the conventional light blocking film, the light blocking film 130 ′ according to the present invention has a plurality of windows W through which ultraviolet rays can be transmitted. Therefore, when ultraviolet light is irradiated onto the window W on the light blocking film 130 ', the sealing agent located under the light blocking film 130' is cured by the ultraviolet light. The sealing agent underneath the window W as well as the sealing agent adjacent thereto are cured by diffraction so that the sealing agent is cured as a whole.

It is desirable to make small windows W so that diffraction occurs easily. However, if the number of the windows (W) is too large, there is a concern that the light shielding film 130 'may not properly serve as a light blocking function, and thus, the window W should be formed in consideration of this.

11 is a view for explaining an example of the ultraviolet irradiation device used in the method for curing the sealant for a liquid crystal display device according to the present invention.

Referring to FIG. 11, the ultraviolet irradiation device includes an ultraviolet lamp 180 and a concentrated lens 200. The concentrated lens 200 is installed between the ultraviolet lamp 180 and the transparent substrate 110 to collect ultraviolet rays emitted from the ultraviolet lamp 180 on the transparent substrate 110.

According to various embodiments of the hardening method according to the present invention described above, a rod type is suitable as the ultraviolet lamp 180, in which case the concentrated lens 200 is arranged in parallel with the ultraviolet lamp 180 and the transparent substrate 110 It is preferable that it is a cylindrical lens convex toward the side.

The curing method according to the present invention described above may use the diffused ultraviolet light as it is, but it is better to collect and use ultraviolet light. When collecting ultraviolet rays, the ultraviolet irradiation device according to the present invention may be used.

Ultraviolet light shielding masks are generally used in order to prevent undesired problems caused by irradiating ultraviolet rays to other regions where the sealing agent is not formed. By the way, by installing an electric shutter (not shown) to control to selectively irradiate ultraviolet rays only to a specific region, it is not necessary to use such an ultraviolet light shielding mask. The electronic switch may be installed between the ultraviolet lamp 180 and the focusing lens 200 or between the focusing lens 200 and the transparent substrate 110.

12 is a view for explaining another example of the ultraviolet irradiation device used in the method for curing the sealant for a liquid crystal display device according to the present invention.

Referring to FIG. 12, the ultraviolet irradiation device includes an ultraviolet lamp 180 and a concentrated reflector 220. The concentrated reflector 220 is installed to be located behind the ultraviolet lamp 180 to reflect the light emitted from the ultraviolet lamp 180 in the opposite direction of the transparent substrate 110 toward the transparent substrate 110 so as to be transparent substrate 110. Plays a role in collecting.

The ultraviolet lamp 180 is preferably a rod-shaped, the concentrated reflector 220 is preferably arranged parallel to the ultraviolet lamp 180 and a cylindrical reflector (Cylindrical) reflecting toward the ultraviolet lamp 180. This will collect the UV light in the form of a line beam.

Even when the concentrated reflector 220 is used, the ultraviolet irradiation may be controlled by the above-described electronic switch. In this case, the electronic switch may be installed between the central reflector 220 and the ultraviolet lamp 180 or between the ultraviolet lamp 180 and the transparent substrate 110.

As described above, according to the present invention, by using various ultraviolet irradiation methods or light blocking films formed with windows, the entire ultraviolet curable sealant printed on the bottom of the light shielding film can be easily cured. As a result, substrate margins are improved, resulting in an improvement in production yield and cost reduction.

In addition, an ultraviolet curing sealing agent 140a is printed on the outer side of the transparent substrate 110, and a thermosetting sealing agent 140b is printed around the inner cell 120 to first cure the ultraviolet curing sealing agent 140a. Due to the pressure difference between the inside and the outside surrounded by the sealing agent 140b, the thermosetting sealing agent 140b may be prevented from being deformed or burst. On the other hand, by increasing the ultraviolet irradiation efficiency using the focusing lens 200 or the focusing reflector 220 can be more efficiently implemented curing the sealing agent.

The present invention is not limited to the above embodiments, and it is apparent that many modifications are possible by those skilled in the art within the technical spirit of the present invention.

Claims (22)

In the method of curing a sealant for a liquid crystal display device to cure an ultraviolet curable sealant interposed between a pair of square transparent substrate to be positioned below a light shielding film formed on a transparent substrate, And irradiating ultraviolet rays to the entire surface of the transparent substrate in the upper space of the transparent substrate, while curing the sealing agent by irradiating the ultraviolet rays while tilting the transparent substrate so that the ultraviolet rays obliquely enter the transparent substrate surface. Method for curing the sealing agent for the device. The method of claim 1, wherein the inclination direction of the transparent substrate is four directions of ± X and ± Y. The method of claim 1, wherein the transparent substrate is inclined alternately to both sides with a diagonal as a central axis. In the method of curing a sealant for a liquid crystal display device to cure an ultraviolet curable sealant interposed between a pair of square transparent substrate to be positioned below a light shielding film formed on a transparent substrate, UV lamps are inclinedly irradiated in the -Y direction in the upper upper space of the transparent substrate, in the + Y direction in the lower upper space, in the + X direction in the upper left space, and in the -X direction in the upper right space, respectively. Characterized in that the sealing agent is cured with ultraviolet rays irradiated from the ultraviolet lamp by scanning either the ultraviolet lamp or the transparent substrate four times in the ± X and ± Y directions or twice in the ± diagonal direction. Sealing agent curing method for liquid crystal display elements. In the method of curing a sealant for a liquid crystal display device to cure an ultraviolet curable sealant interposed between a pair of square transparent substrate to be positioned below a light shielding film formed on a transparent substrate, Ultraviolet lamps inclined in the -Y direction and ultraviolet lamps inclined in the + Y direction are installed in the upper or lower upper space of the transparent substrate in parallel with each other, and in the + X direction on the upper left or right side of the transparent substrate. A UV irradiation lamp for inclined irradiation and an UV lamp for inclining in the -X direction are installed side by side, so that either the UV lamp or the transparent substrate is placed in any one of the ± X direction and the ± Y direction. 2. The method of curing a sealing agent for a liquid crystal display device, wherein the sealing agent is cured by ultraviolet rays irradiated from the ultraviolet lamp by scanning twice all at once or once in any one of the diagonal directions. The liquid crystal according to claim 4 or 5, wherein the ultraviolet lamps installed on the upper side and the lower side have a long rod shape left and right, and the ultraviolet lamps installed on the left and right side have a long rod shape up and down. Sealing agent curing method for display elements. In the method of curing a sealant for a liquid crystal display device to cure an ultraviolet curable sealant interposed between a pair of square transparent substrate to be positioned below a light shielding film formed on a transparent substrate, An ultraviolet lamp for obliquely irradiating diagonally in an upper space of any one of two vertices of the upper side of the transparent substrate is installed, and an ultraviolet lamp for obliquely irradiating diagonally in a + diagonal direction is installed in an upper space of the lower vertex located in the diagonal direction, Any one of the ultraviolet irradiation lamp or the transparent substrate is scanned twice in either the ± X direction or the ± Y direction once, or twice in the diagonal direction to the ultraviolet light emitted from the ultraviolet lamp. A curing agent curing method for a liquid crystal display device, characterized in that the sealing agent is cured. In the method of curing a sealant for a liquid crystal display device to cure an ultraviolet curable sealant interposed between a pair of square transparent substrate to be positioned below a light shielding film formed on a transparent substrate, An ultraviolet lamp inclined in a diagonal direction and an ultraviolet lamp inclined in a + diagonal direction are installed side by side in a diagonal direction in an upper space of any one of the vertices of the transparent substrate, so that either the ultraviolet lamp or the transparent substrate is installed. Scan the sealing agent with ultraviolet rays irradiated from the ultraviolet lamp by scanning once in any of the ± X directions, scanning once in any of the ± Y directions, or scanning once in any of the diagonal directions. Curing agent sealing method for liquid crystal display elements characterized by hardening. 10. The method of claim 7 or 8, wherein the ultraviolet lamp has a long rod shape in a direction perpendicular to the diagonal direction. In the method of curing a sealant for a liquid crystal display device to cure an ultraviolet curable sealant interposed between a pair of square transparent substrate to be positioned below a light shielding film formed on a transparent substrate, UV light is installed in the upper space of the transparent substrate in parallel with the rod-shaped UV lamp at least equal to the width of the transparent substrate, and between the ultraviolet lamp and the transparent substrate is irradiated perpendicularly from the ultraviolet lamp to the transparent substrate Further, by changing the path of the optical path changing means for adjusting the angle of incidence to the transparent substrate, by selectively rotating either the ultraviolet lamp or the transparent substrate and the vertical irradiation and inclined irradiation selectively And curing the sealing agent with ultraviolet rays irradiated from the ultraviolet lamp. 12. The method of claim 10, wherein the optical path changing means is a reflecting plate, a prism, or an optical split. delete delete In the ultraviolet irradiation device used to cure the ultraviolet curable sealing agent for liquid crystal display device interposed between a pair of transparent substrate to be positioned under the light shielding film formed on the transparent substrate, Rod-type ultraviolet lamps emitting ultraviolet rays; And And a cylindrical concentrated lens installed between the ultraviolet lamp and the transparent substrate in parallel with the ultraviolet lamp and convex toward the transparent substrate to collect ultraviolet rays on the transparent substrate in the form of a line beam. delete 15. The ultraviolet irradiating apparatus according to claim 14, further comprising an electronic switch for determining whether the ultraviolet rays irradiated toward the transparent substrate are blocked. The ultraviolet irradiation apparatus according to claim 16, wherein the electronic switch is provided between the ultraviolet lamp and the focusing lens or between the focusing lens and the transparent substrate. In the ultraviolet irradiation device used to cure the ultraviolet curable sealing agent for liquid crystal display device interposed between a pair of transparent substrate to be positioned under the light shielding film formed on the transparent substrate, Rod-type ultraviolet lamps emitting ultraviolet rays; And Concave toward the ultraviolet lamp and positioned behind the ultraviolet lamp in parallel with the ultraviolet lamp and reflecting out of the ultraviolet light emitted from the ultraviolet lamp in the opposite direction to the transparent substrate toward the transparent substrate to collect on the transparent substrate in the form of a line beam. Ultraviolet irradiation apparatus comprising a; cylindrical concentrated reflector. delete 19. The ultraviolet irradiating apparatus according to claim 18, further comprising an electronic switch for determining whether the ultraviolet rays irradiated toward the transparent substrate are blocked. 21. The ultraviolet irradiating apparatus according to claim 20, wherein the electronic switch is provided between the concentrated reflector and the ultraviolet lamp or between the ultraviolet lamp and the transparent substrate. delete

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