JP2010038983A - Liquid crystal display panel and method for manufacturing liquid crystal display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display panel which is excellent in display quality and in its manufacturing efficiency, and to provide a method for manufacturing the liquid crystal display panel. <P>SOLUTION: The liquid crystal display panel includes: an array substrate having a display region; a counter substrate 20 having the display region and placed opposite to the array substrate; a frame shaped sealing material 60 falling outside the display region, overlapping with the array substrate and the counter substrate, joining the array substrate and the counter substrate together, and having an exhaust port formed on a portion thereof so as to extend to the peripheries of the array substrate and the counter substrate; and a liquid crystal layer formed in a region surrounded by the array substrate, the counter substrate, and the sealing material with a dropping injection method. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a liquid crystal display panel and a method for manufacturing a liquid crystal display panel.

  In general, a liquid crystal display device is used as an image display device. The liquid crystal display device includes a liquid crystal display panel. The liquid crystal display panel includes an array substrate, a counter substrate disposed opposite to the array substrate with a predetermined gap, and a liquid crystal layer sandwiched between the two substrates.

  Since the liquid crystal display device has various features such as thinness, light weight, and low power consumption, it is applied to various fields such as OA (office automation) equipment, information terminals, watches, and television receivers. ing. In particular, a liquid crystal display device is used in a display unit of an electronic device that displays a large amount of information, such as a portable television or a computer, because it has a high-speed response by providing a TFT (thin film transistor) as a switching element.

  In recent years, with an increase in the amount of information, there is an increasing demand for higher definition of images and higher display speed. High definition of an image is realized, for example, by miniaturizing the array structure of the array substrate on which the above-described TFT is formed.

  On the other hand, regarding the increase in display speed, instead of the conventional display mode, OCB (Optically Compensated Birefringence) mode, VAN (Vertically Aligned Nematic) mode, HAN (Hybrid Aligned Nematic) mode, and π alignment mode are used. In addition, it has been studied to adopt a surface stabilized ferroelectric liquid crystal (Surface Stabilized Ferroelectric Liquid Crystal) mode and an antiferroelectric liquid crystal (AFLC) mode using a smectic liquid crystal.

In these display modes, in order to obtain excellent electro-optical characteristics (high contrast, wide viewing angle, high-speed response), strict liquid crystal layer thickness (hereinafter referred to as cell gap) uniformity management is required. The liquid crystal layer is formed by, for example, a vacuum injection method (see, for example, Patent Document 1 and Patent Document 2).
JP 2007-240576 A JP 2007-286576 A

  In recent years, a drop injection method suitable for mass production is frequently used as a liquid crystal injection method. In the dropping injection method, the utilization efficiency of the liquid crystal material is dramatically increased, and thus a great effect can be obtained in reducing the manufacturing cost.

However, in the dropping injection method, it is difficult to control the filling rate of the liquid crystal material compared to the vacuum injection method. That is, the filling rate of the liquid crystal material is too low and bubbles are generated in the display region, or the filling rate is too high and the cell gap due to excess liquid crystal is locally thickened. In this case, the electro-optical characteristics become locally abnormal and the visibility is deteriorated.
The present invention has been made in view of the above points, and an object thereof is to provide a liquid crystal display panel having excellent display quality and manufacturing efficiency and a method for manufacturing the liquid crystal display panel.

In order to solve the above-described problems, a liquid crystal display panel according to an aspect of the present invention includes:
An array substrate having a display area;
A counter substrate having the display area and disposed opposite to the array substrate;
A frame having a discharge port formed to extend from the display area and overlap the array substrate and the counter substrate, join the array substrate and the counter substrate, and partially extend to the periphery of the array substrate and the counter substrate Shaped sealing material,
And a liquid crystal layer formed in a region surrounded by the array substrate, the counter substrate, and the sealing material by a dropping injection method.

In addition, a method for manufacturing a liquid crystal display panel according to another aspect of the present invention includes:
An array substrate having a display area, a counter substrate having the display area and arranged to face the array substrate with a gap, a sealing material, and an area surrounded by the array substrate, the opposing substrate and the sealing material In a method for manufacturing a liquid crystal display panel comprising a liquid crystal layer formed on
A first mother glass having the array substrate whose peripheral edge overlaps the first parting line and the first parting line; and the counter substrate having a peripheral part overlapping the second parting line and the second parting line. And having a second mother glass having
The sealing material is applied in a frame shape on the array substrate or the counter substrate that is out of the display area, and the sealing material is partially projected so as to straddle the first scheduled dividing line or the second scheduled dividing line. Forming a frame-shaped sealing material having a convex pattern in which a part of the closed region that is formed and surrounded by the sealing material protrudes,
Dropping liquid crystal on the array substrate or counter substrate surrounded by the sealing material,
The first mother glass and the second mother glass are joined through the sealing material, and the liquid crystal is filled in the region surrounded by the array substrate, the counter substrate, and the sealing material by the dropped liquid crystal,
The bonded first mother glass and second mother glass are divided along the first dividing line and the second dividing line, and overlapped with the first dividing line and the second dividing line. Cut the pattern,
Taking out the liquid crystal cell filled with the liquid crystal from the divided first mother glass and second mother glass, and forming a discharge port in the cut convex pattern,
Pressurizing the liquid crystal cell, and discharging excess liquid crystal from the discharge port to the outside of the liquid crystal cell;
After discharging the excess liquid crystal, a sealing material is applied to the discharge port,
The sealing material is cured.

  According to the present invention, it is possible to provide a liquid crystal display panel having excellent display quality and excellent manufacturing efficiency, and a method for manufacturing the liquid crystal display panel.

  Hereinafter, a liquid crystal display panel and a method of manufacturing the liquid crystal display panel according to embodiments of the present invention will be described in detail with reference to the drawings. Here, a liquid crystal display device including a liquid crystal display panel and a method for manufacturing the liquid crystal display device will be described.

  As shown in FIGS. 1 to 3, the liquid crystal display device includes a liquid crystal display panel 1, a backlight unit 2, and a bezel 3. The liquid crystal display panel 1 includes an array substrate 10, a counter substrate 20, a color filter 40, a plurality of spacers 50, a sealing material 60, a liquid crystal layer 70, a first polarizing plate 80 and a second polarizing plate 90.

  The array substrate 10 and the counter substrate 20 are formed in a rectangular shape. The array substrate 10 and the counter substrate 20 are arranged so that the three sides of each of the array substrate 10 and the counter substrate 20 substantially overlap. On the remaining side of the array substrate 10, the array substrate 10 extends outward from the counter substrate 20. The array substrate 10 and the counter substrate 20 are a rectangular display region R1 where both substrates overlap and a region outside the display region R1, and a rectangular frame overlapping region where the array substrate 10 and the counter substrate 20 overlap. R2.

  The array substrate 10 has a glass substrate 11 as a transparent insulating substrate. A gate insulating film 12 is formed on the glass substrate 11. In the display region R1, a plurality of scanning lines 13 and a plurality of signal lines 14 are provided in a grid pattern on the gate insulating film 12 with an insulating film (not shown) interposed therebetween. Two adjacent scanning lines 13 and two adjacent signal lines 14 partition a pixel. An interlayer insulating film 15 is formed on the gate insulating film 12, the scanning line 13, and the signal line 14. The interlayer insulating film 15 is also formed in the overlapping region R2.

  For example, TFTs (thin film transistors) 16 are provided as switching elements near the intersections of the scanning lines 13 and the signal lines 14. The TFT 16 includes a gate electrode 16a extending a part of the scanning line 13, a channel layer 16b facing the gate electrode 16a through the gate insulating film 12, a source electrode 16c connected to one region of the channel layer 16b, and It has a drain electrode 16d connected to the other region. In this embodiment, the channel layer 16b is formed of polysilicon (p-Si). The source electrode 16 c is connected to the signal line 14. The drain electrode 16d is connected to a pixel electrode 17 described later.

  A plurality of pixel electrodes 17 are formed in a matrix on the interlayer insulating film 15. The pixel electrode 17 is formed of a transparent conductive film such as ITO (Indium Tin Oxide). The pixel electrode 17 is connected to the drain electrode 16 d through a contact hole formed in the interlayer insulating film 15. The pixel electrode 17 forms a pixel.

  Although not all shown, a plurality of spacers 50 are formed at a predetermined density on the glass substrate 11 on which the pixel electrodes 17 are formed. The spacer 50 is a columnar spacer. On the glass substrate 11 on which the spacer 50 is formed, the alignment film 18 is formed so as to overlap the pixel electrode 17.

  As described above, the upper structure 5 is formed on the glass substrate 11. The upper structure 5 includes the gate insulating film 12, the scanning line 13, the signal line 14, the interlayer insulating film 15, the TFT 16, the pixel electrode 17, the alignment film 18, and the like.

  The counter substrate 20 has a glass substrate 21 as a transparent insulating substrate. In the display region R <b> 1, a light shielding layer 31 that overlaps the scanning lines 13 and the signal lines 14 is formed on the glass substrate 21. The light shielding layer 31 has a plurality of openings 32 in a matrix shape.

  In the overlapping region R2 outside the display region R1, a rectangular frame-shaped peripheral light shielding layer 33 is formed on the glass substrate 21 as a light shielding layer. The peripheral light shielding layer 33 is formed over the entire circumference of the overlapping region R2, and contributes to shielding light leaking from between the outside of the display region R1 and the inside of the bezel 3.

  On the glass substrate 21, the light shielding layer 31, and the peripheral light shielding layer 33, a plurality of red colored layers 40R, a plurality of green colored layers 40G, and a plurality of blue colored layers 40B are disposed. These colored layers 40R, 40G, and 40B are adjacent to each other and are arranged alternately to form the color filter 40. The peripheral portions of the colored layers 40R, 40G, and 40B overlap the light shielding layer 31.

  On the colored layers 40R, 40G, and 40B, the counter electrode 22 is formed of a transparent conductive material such as ITO. An alignment film 23 is formed on the counter electrode 22. The counter substrate 20 has a display surface S <b> 1 on the opposite side to the array substrate 10.

  The array substrate 10 and the counter substrate 20 are arranged to face each other with a predetermined gap by a spacer 50. The array substrate 10 and the counter substrate 20 are joined to each other by a frame-shaped sealing material 60 formed over the entire circumference in the overlapping region R2. The sealing material 60 has a discharge port 62 formed so as to extend to the peripheral edges of the array substrate 10 and the counter substrate 20 in part. The discharge port 62 is sealed with the sealing material 6.

  The liquid crystal layer 70 is formed in a region surrounded by the array substrate 10, the counter substrate 20, and the sealing material 60 by a dropping injection method. The array substrate 10 and the counter substrate 20 sandwich the liquid crystal layer 70. The first polarizing plate 80 is disposed on the outer surface of the array substrate 10. The second polarizing plate 90 is disposed on the outer surface of the counter substrate 20. For this reason, in this embodiment, the second polarizing plate 90 includes the display surface S1.

  The backlight unit 2 is disposed on the outer surface side of the array substrate 10. The backlight unit 2 includes a light guide plate 2a disposed opposite to the first polarizing plate 80, and a light source 2b and a reflection plate 2c disposed opposite to one side edge of the light guide plate. The light guide plate 2 a has a light emission surface S <b> 2 facing the first polarizing plate 80.

  The bezel 3 is formed in a frame shape, and is disposed on the display surface S1 side and outside the display region R1. The bezel 3 is positioned such that the inner periphery passes through a region facing the peripheral light shielding layer 33.

Next, a more detailed configuration of the liquid crystal display device will be described together with its manufacturing method.
As shown in FIGS. 1 to 3 and 4, first, a mother glass 111 as a first mother substrate having a size larger than that of the array substrate 10 is prepared as a transparent insulating substrate. According to this embodiment, the mother glass 111 has six rectangular array substrate formation regions R6 and an ineffective region R7 that is out of the array substrate formation region R6 in order to form the array substrate 10. . The mother glass 111 has a first planned dividing line e1 that overlaps the periphery of the array substrate formation region R6.

  On the prepared mother glass 111, a gate insulating film 12, a scanning line 13, a signal line 14, an interlayer insulating film 15, a TFT 16, a pixel electrode 17, and the like are formed by a normal manufacturing process such as repeated film formation and patterning. .

Next, using a spinner, for example, a photosensitive acrylic transparent resin (NN600 manufactured by JSR Corporation) is applied to the entire surface of the mother glass 111. Subsequently, the transparent resin is dried at 90 ° C. for 10 minutes. Next, patterning is exposed to the transparent resin using a predetermined photomask. At the time of exposure, the transparent resin is irradiated with ultraviolet rays with a wavelength of 365 nm and an exposure amount of 80 mJ / cm ² .

  Next, the exposed transparent resin is developed with an alkaline aqueous solution having pH = 11.5, and then baked and cured at 200 ° C. for 60 minutes. Thereby, a columnar spacer 50 having a height of 4.5 μm is formed.

Thereafter, an alignment film 18 having a thickness of 800 mm is formed by applying AL-3046 (manufactured by JSR Corporation) as an alignment film material over the entire surface of the mother glass 111 including the display region R1. The alignment film 18 is subjected to a predetermined alignment process (rubbing) as necessary.
As a result, six upper structures 5 are formed on the mother glass 111, and six array substrates 10 are completed.

  As shown in FIG. 1 to FIG. 3 and FIG. 5, on the other hand, in the manufacturing method of the counter substrate 20, first, a mother glass 121 as a second mother substrate having a size larger than that of the counter substrate 20 is used as a transparent insulating substrate. prepare. According to this embodiment, the mother glass 121 has six rectangular counter substrate forming regions R8 and an ineffective region R9 that is out of the counter substrate forming region R8 in order to form the counter substrate 20. . The mother glass 121 has a second dividing line e2 that overlaps the periphery of the counter substrate formation region R8.

  The light shielding layer 31 and the peripheral light shielding layer 33 are formed on the prepared mother glass 121. Subsequently, the colored layer 40R is formed on the glass substrate 21, the light shielding layer 31, and the peripheral light shielding layer 33 by using, for example, a photoetching method. Thereafter, similarly to the colored layer 40R, the colored layer 40G and the colored layer 40B are formed using, for example, a photoetching method.

Subsequently, an ITO film having a thickness of 500 mm is formed on the colored layers 40R, 40G, and 40B by sputtering, and patterned to form the counter electrode 22. Next, an alignment film 23 having a thickness of 800 mm is formed by applying AL-3046 (manufactured by JSR Corporation) as an alignment film material over the entire surface of the mother glass 121 including the display region R1. The alignment film 23 is subjected to a predetermined alignment process (rubbing) as necessary.
Thus, six counter substrates 20 are completed using the mother glass 121.

  Next, as illustrated in FIG. 6, for example, an ultraviolet curable resin is applied to the overlapping region R <b> 2 of the counter substrate 20 as a material for forming the sealing material 60 by a printing method over the entire circumference. More specifically, the resin is applied in a frame shape on the counter substrate 20 outside the display region R1, and the resin is applied in a partially protruding manner. Thereby, the frame-shaped sealing material 60 which has the convex pattern 61 which crossed the 2nd division | segmentation planned line e2 and protruded partially the closed area | region enclosed with the said resin is formed. Further, when forming the sealing material 60, an electrode transition material for applying a voltage from the array substrate 10 to the counter substrate 20 was formed on an electrode transition electrode (not shown) around the sealing material 60.

  Subsequently, the mother glass 111 and the mother glass 121 are carried into a vacuum chamber (not shown). Then, a liquid crystal is dropped on the counter substrate 20 (mother glass 121) surrounded by the sealing material 60 in a vacuum. The amount of liquid crystal dropped was about 2% larger than the optimum target value of the internal volume.

  As shown in FIGS. 5 to 7, thereafter, the mother glass 111 and the mother glass 121 are arranged to face each other so that the alignment film 18 and the alignment film 23 face each other, and the array substrate 10 and the counter substrate 20 are predetermined by a plurality of spacers 50. The peripheral portions of the array substrate and the counter substrate are bonded to each other by the sealing material 60 while maintaining the gap.

Thereafter, the bonded array substrate 10 and counter substrate 20 are carried out of the vacuum chamber. Next, the sealing material 60 was cured by irradiating with ultraviolet rays from the outside with an exposure amount of 3000 mJ / cm ² , and further subjected to thermosetting treatment at 130 ° C. for 1 hour for main curing. Thereby, the mother glass 111 and the mother glass 121 are joined through the sealing material 60. Then, the liquid crystal is filled in the region surrounded by the array substrate 10, the counter substrate 20, and the sealing material 60 by the dropped liquid crystal.

  Subsequently, the mother glass 111 is divided along the first planned dividing line e1, and the mother glass 121 is divided along the second planned dividing line e2. When dividing, for example, a scribe line is drawn along the first planned dividing line e1 and the second planned divided line e2. Thereby, the array substrate 10 is cut out from the mother glass 111, and the counter substrate 20 is cut out from the mother glass 121. At this time, the convex pattern 61 is cut so as to overlap with the first parting planned line e1 and the second parting planned line e2.

  As a result, as shown in FIGS. 8 and 9, six sets of liquid crystal cells filled with liquid crystal are taken out from the divided mother glass 111 and mother glass 121, and discharge ports 62 are formed in the cut convex pattern 61. Is done.

Next, as shown in FIGS. 10 and 11, the pressurizing mechanism 100 pressurizes the liquid crystal cell from the outside of both substrates at 5 kgf / mm ² , pressurizes the liquid crystal cell, and discharges excess liquid crystal from the discharge port 62 to the liquid crystal cell. Discharge outside.

Thereafter, as shown in FIG. 12, the pressurized state is maintained, and the ultraviolet curable sealing material 6 is applied to the discharge port 62. After applying the sealing material, the pressure applied to the liquid crystal cell is reduced and the sealing material 6 is sucked into the discharge port 62 (FIG. 2). Here, the pressure was reduced to ² kgf / mm ² . Subsequently, the sealing material 6 is cured by irradiating the sealing material 6 with ultraviolet rays from the outside with an exposure amount of 1000 mJ / cm ² . As a result, the liquid crystal layer 70 is formed in a region surrounded by the array substrate 10, the counter substrate 20, and the sealing material 60.
Thereafter, the liquid crystal display panel 1 is completed by washing out the liquid crystal outside the liquid crystal cell.

  Next, the first polarizing plate 80 is disposed on the outer surface of the array substrate 10, and the second polarizing plate 90 is disposed on the outer surface of the counter substrate 20. Thereby, each liquid crystal display panel 1 is completed. Then, the backlight unit 2 and the bezel 3 are attached to the liquid crystal display panel 1. Although not shown, a drive circuit is mounted on the array substrate 10 that is removed from the counter substrate 20. As a result, it is assembled into a module. Thereby, each liquid crystal display device is completed.

  Here, when the inventors of the present application evaluated lighting of the liquid crystal display device formed as described above, it was confirmed that the cell gap was very uniform as a whole, and excellent display quality was obtained. It was.

  According to the liquid crystal display device and the method of manufacturing the liquid crystal display device configured as described above, the sealing material 60 is applied so as to be connected over the entire circumference to form a closed region. When injecting the liquid crystal, the region surrounded by the sealant 60 can be filled by a dropping injection method. For this reason, it can be adapted to mass production. In addition, since the use efficiency of the liquid crystal is drastically improved, the manufacturing cost can be reduced.

The sealing material 60 has a convex pattern 61 that is partially protruded. For this reason, when dividing the mother glass 111 and the mother glass 121, the convex pattern 61 can be cut to form the discharge port 62. Since excess liquid crystal can be discharged from the discharge port 62, the cell gap can be made uniform as a whole. Thereby, favorable visibility can be obtained.
From the above, it is possible to obtain a liquid crystal display panel having excellent display quality and manufacturing efficiency and a method for manufacturing the liquid crystal display panel.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments. For example, some components may be deleted from all the components shown in the embodiment.

  For example, the sealing material 60 may be applied not only on the counter substrate 20 (mother glass 121) but also on the array substrate 10 (mother glass 111). The shape of the convex pattern 61 is not limited and can be variously modified.

Sectional drawing which shows the liquid crystal display device provided with the liquid crystal display panel which concerns on embodiment of this invention. FIG. 2 is a schematic plan view showing the liquid crystal display panel shown in FIG. 1. FIG. 3 is a schematic plan view showing a wiring structure of the array substrate shown in FIGS. 1 and 2. The top view which shows the state which formed six array substrates on the mother glass in the manufacturing process of the said liquid crystal display device. The top view which shows the state which formed six counter substrates on the mother glass in the manufacturing process of the said liquid crystal display device. The top view which shows the state which applied the sealing material to the mother glass following FIG. The top view which shows the state which bonded together the two mother glasses shown in FIG.4 and FIG.6 through the sealing material. The side view which shows the liquid crystal cell taken out from the said 2 mother glass. FIG. 9 is a plan view showing the liquid crystal cell shown in FIG. 8. The side view which shows the liquid crystal cell of the state which pressurized the liquid crystal cell shown in FIG.8 and FIG.9, and discharged the excess liquid crystal. FIG. 11 is a plan view showing the liquid crystal cell shown in FIG. 10. The top view which shows the liquid crystal cell of the state which applied the sealing material to the discharge port following FIG.10 and FIG.11.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Liquid crystal display panel, 2 ... Back light unit, 3 ... Bezel, 6 ... Sealing material, 10 ... Array substrate, 11 ... Glass substrate, 13 ... Scan line, 14 ... Signal line, 16 ... TFT, 17 ... Pixel electrode 20 ... counter substrate, 21 ... glass substrate, 22 ... counter electrode, 40 ... color filter, 40R, 40G, 40B ... colored layer, 50 ... spacer, 60 ... sealing material, 61 ... convex pattern, 62 ... discharge port, 70 DESCRIPTION OF SYMBOLS ... Liquid crystal layer, 111 ... Mother glass, 121 ... Mother glass, R1 ... Display area, R2 ... Overlapping area, e1 ... First division planned line, e2 ... Second division planned line.

Claims (5)

An array substrate having a display area;
A counter substrate having the display area and disposed opposite to the array substrate;
A frame having a discharge port formed to extend from the display area and overlap the array substrate and the counter substrate, join the array substrate and the counter substrate, and partially extend to the periphery of the array substrate and the counter substrate Shaped sealing material,
A liquid crystal display panel comprising: a liquid crystal layer formed in a region surrounded by the array substrate, the counter substrate, and the sealing material by a dropping injection method.   The liquid crystal display panel according to claim 1, wherein the sealing material is formed of an ultraviolet curable resin. An array substrate having a display area, a counter substrate having the display area and arranged to face the array substrate with a gap, a sealing material, and an area surrounded by the array substrate, the opposing substrate and the sealing material In a method for manufacturing a liquid crystal display panel comprising a liquid crystal layer formed on
A first mother substrate having the array substrate having a peripheral edge overlapping the first dividing line and the first dividing line; and the counter substrate having a peripheral edge overlapping the second dividing line and the second dividing line. A second mother board having
The sealing material is applied in a frame shape on the array substrate or the counter substrate that is out of the display area, and the sealing material is partially projected so as to straddle the first scheduled dividing line or the second scheduled dividing line. Forming a frame-shaped sealing material having a convex pattern in which a part of the closed region that is formed and surrounded by the sealing material protrudes,
Dropping liquid crystal on the array substrate or counter substrate surrounded by the sealing material,
The first mother substrate and the second mother substrate are joined through the sealing material, and the liquid crystal is filled in the region surrounded by the array substrate, the counter substrate, and the sealing material by the dropped liquid crystal,
The bonded first mother substrate and second mother substrate are divided along the first planned dividing line and the second planned divided line, and overlapped with the first divided planned line and the second divided planned line. Cut the pattern,
Taking out the liquid crystal cell filled with the liquid crystal from the divided first mother substrate and second mother substrate, and forming a discharge port in the cut convex pattern,
Pressurizing the liquid crystal cell, and discharging excess liquid crystal from the discharge port to the outside of the liquid crystal cell;
After discharging the excess liquid crystal, a sealing material is applied to the discharge port,
A method for producing a liquid crystal display panel, wherein the sealing material is cured.   The method of manufacturing a liquid crystal display panel according to claim 3, wherein the sealing material is formed of an ultraviolet curable resin. When applying the sealing material, maintain pressure on the liquid crystal cell,
After applying the sealing material, the pressure applied to the liquid crystal cell is reduced and the sealing material is sucked into the discharge port,
The method for manufacturing a liquid crystal display panel according to claim 3, wherein the sealing material is cured after the sealing material is sucked into the discharge port.

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