JP2007212534A - Sealing structure and manufacturing method of liquid crystal display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a liquid crystal display device capable of widening an effective usage area of a glass substrate. <P>SOLUTION: Facing sides of first sealing parts 21 and second sealing parts 26 drawn in panel forming regions 16 on the surface of a large-sized glass substrate 12 of a large-sized array substrate 11 are coupled by coupling patterns 25. Liquid crystal injection ports can be formed in the first and the second sealing parts 21 and 26 by cutting the coupling patterns 25. There is no need to provide margin regions between the first sealing parts 21 and the second sealing parts 26. The panel forming regions 16 can be continuously provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seal structure in which a plurality of seal portions are provided on one main surface of a substrate, and a method for manufacturing a liquid crystal display device.

Conventionally, a liquid crystal panel as a liquid crystal display device having this type of seal structure is provided with a plurality of seal patterns on a large array substrate that becomes a plurality of array substrates after division. A part of these seal patterns is provided with an inlet pattern in which a cut is provided to inject a liquid crystal composition into a region surrounded by these seal patterns. Here, these inlet patterns are surrounded by a seal pattern between the large array substrate and the large counter substrate after a large counter substrate, which becomes a plurality of counter substrates after being divided, is bonded onto the large array substrate. For the purpose of efficiently injecting the liquid crystal composition into the region, a blank portion is provided on the side of the injection hole pattern (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2003-5201

  However, in the liquid crystal panel described above, a blank portion is provided on the side of the inlet pattern of each seal pattern. The blank portion is a portion that is removed when the large array substrate and the large counter substrate are cleaved corresponding to each seal pattern. Therefore, there is a problem that the effective use area of the large array substrate and the large counter substrate is reduced by forming the blank portion.

  The present invention has been made in view of these points, and an object of the present invention is to provide a seal structure and a method of manufacturing a liquid crystal display device that can widen the effective use area of a substrate.

  The present invention provides a substrate, a plurality of quadrangular seal portions that are provided on one main surface of the substrate and surround a partial region of the one main surface of the substrate, and adjacent sides of the plurality of seal portions. Are connected along the width direction of the plurality of seal portions and communicated between the adjacent regions, and provided on a side facing the connection portion of the seal portion located at the end in the width direction. And an opening for opening the side.

  And between adjacent sides of a plurality of quadrangular seal portions that are provided on one main surface of the substrate and surround a partial region of the one main surface of the substrate, at the connecting portion along the width direction of the plurality of seal portions Connect and communicate between adjacent areas. Furthermore, an opening is provided on the side facing the connecting portion of the seal portions located at the end portions in the width direction of the plurality of seal portions to be opened.

  According to the present invention, the adjacent sides of the plurality of seal portions on one main surface of the substrate are connected at the connecting portions along the width direction of the plurality of seal portions, and the adjacent regions are communicated with each other. By forming an opening on the side facing the connecting part of the seal part located at the end in the direction and opening it, an opening is formed on the opposing side of each of the plurality of seal parts by cutting the connecting part it can. Therefore, it is not necessary to provide a blank portion on the side of each of the plurality of seal portions, so that the effective use area of the substrate can be increased.

  Hereinafter, the configuration of the first embodiment of the liquid crystal display device of the present invention will be described with reference to FIG. 1, FIG. 6 and FIG.

  6 and 7, reference numeral 1 denotes a liquid crystal display panel as a liquid crystal display device. The liquid crystal display panel 1 includes an array substrate 2 having a substantially rectangular flat plate shape. The liquid crystal display panel 1 is a three-side free type liquid crystal display cell in which drive circuits (not shown) are not provided on the three sides of the array substrate 2. And this array substrate 2 has the glass substrate 3 as an insulating board which has a substantially transparent rectangular flat plate-shaped translucency.

  Further, an image display area 4 which is a rectangular image display area capable of displaying an image is provided in the central portion on the surface which is one main surface of the glass substrate 3. The image display area 4 of the glass substrate 3 includes a plurality of scanning lines (not shown) spaced in parallel at equal intervals along the width direction of the glass substrate 3 and the vertical direction of the glass substrate 3. A plurality of signal lines (not shown) spaced apart in parallel at equal intervals are provided.

  Further, a pixel is provided in each of the regions partitioned and surrounded by these scanning lines and signal lines. These pixels are provided in a matrix in the image display area 4 of the glass substrate 3. Each of these pixels is provided with a thin film transistor (TFT) as a switching element and a pixel electrode. These pixel electrodes are electrically connected to a thin film transistor in the same pixel, and are controlled by this thin film transistor.

  Here, as shown in FIG. 1, the array substrate 2 cuts a large array substrate 11 which is a mother substrate through a predetermined interval along the longitudinal direction and the width direction according to the size of each array substrate 2. It is divided and formed. Specifically, the large-sized array substrate 11 includes a plurality of array substrates 2 along the longitudinal direction and the width direction, for example, 5 in the longitudinal direction and 3 in the width direction. It is the board | substrate of the connected large plate state.

  The large array substrate 11 includes a large glass substrate 12 as a rectangular flat plate-like first substrate. The large glass substrate 12 is provided with a grid-like divided reference line 13 along the longitudinal direction and the width direction of the large glass substrate 12 in accordance with the size of the glass substrate 3 of each array substrate 2. . These divided reference lines 13 are spaced apart at equal intervals in the longitudinal direction of the large glass substrate 12, and are provided with a plurality of, for example, six vertical reference lines 14 along the width direction of the large glass substrate 12. Further, the divided reference lines 13 are spaced at equal intervals in the width direction of the large glass substrate 12, and include a plurality of, for example, four horizontal reference lines 15 along the longitudinal direction of the large glass substrate 12. Yes.

  Further, on the surface of the large glass substrate 12, a panel forming region 16 is provided as a total of 15 chip arrangement regions having a quadrangular shape divided by a dividing reference line 13 on the surface of the large glass substrate 12. . Further, a blank area 17 is provided on the surface of the large glass substrate 12 outside the panel forming areas 16 so as to surround the panel forming areas 16. The margin area 17 is a margin portion of the large glass substrate 12 in which the vertical direction and the horizontal direction are not separated by the vertical reference line 14 and the horizontal reference line 15 of the division reference line 13, respectively. Therefore, the blank area 17 is provided outside the panel forming areas 16 and is formed in a rectangular frame shape surrounding the outer periphery of each panel forming area 16.

  In each panel forming region 16 on the surface of the large glass substrate 12, a seal pattern 18 as a seal structure is formed. The seal pattern 18 is made of a thermosetting resin that is cured by heating or cooling, that is, by changing the temperature. Further, the seal pattern 18 is provided by applying and drawing a sealant continuously so as to surround each panel forming region 16 on the surface of the large glass substrate 12.

  Further, the seal pattern 18 is formed in a substantially rectangular frame shape when viewed from above so that the inner periphery of the panel forming region 16 of the large glass substrate 12 is slightly inside. Specifically, the seal pattern 18 is provided near one side in the vertical direction of each panel forming region 16 and is provided in the center in the horizontal direction of each panel forming region 16. The seal pattern 18 in each panel forming region 16 located near one end in the lateral direction of the surface of the large glass substrate 12 is opened at the center of the sides 19 facing each other and is provided with a cut 20 as an opening. The first seal portion 21 is formed as a seal portion. The first seal portion 21 is an end pattern provided at the end portion of the seal pattern 18 and surrounds the panel forming region 16 closest to one end, which is a part of the surface of the large glass substrate 12.

  In addition, an inlet pattern 22 is integrally provided in the cut 20 at the center of the side 19 located on one side in the horizontal direction of the first seal portion 21. The injection hole pattern 22 includes an extension 23 serving as a liquid crystal injection hole protruding a predetermined distance along the lateral direction of the large glass substrate 12 from both side edges of the cut 20 of the first seal portion 21. The extending portion 23 extends beyond the vertical reference line 14 located on one side of the first seal portion 21 to the margin area 17 located on one side of the horizontal direction from the vertical reference line 14. Are provided. Further, an extended portion 24 is provided at the tip of the extended portion 23 so as to protrude and expand in a direction opposite to each other along the longitudinal direction of the large glass substrate 12. The expanded portion 24 is provided in a blank area 17 whose vertical direction is partitioned by each vertical reference line 14 that partitions the panel forming area 16 in which the first seal portion 21 is provided. That is, the expanded portion 24 has a longitudinal dimension slightly smaller than the longitudinal dimension along the longitudinal direction of the first seal portion 21.

  Further, a connection pattern 25 as a connection part is integrally provided at the cut 20 located at the center of the side 19 on the other side in the horizontal direction of the first seal part 21. The connection pattern 25 protrudes from the both side edges of the cut 20 of the first seal portion 21 by a predetermined distance along the horizontal direction of the large glass substrate 12, and after the large glass substrate 12 is cut along the vertical reference line 14. This is a pattern that becomes the liquid crystal injection port 33. Further, the connection pattern 25 is formed on one side in the lateral direction of the second seal portion 26 as a seal portion provided in the panel forming region 16 located on the other side in the lateral direction of the first seal portion 21. It is integrally connected to and connected to a cut 27 located at the center of 19. The second seal portion 26 is an intermediate pattern provided between the first seal portions 21 of the seal pattern 18. The first seal portion 21 and the second seal portion 26 are connected by a connection pattern 25 between adjacent sides between the first seal portion 21 and the second seal portion 26. The panel forming region 16 which is the internal space of each of the first first seal portion 21 and the second seal portion 26 is connected and connected.

  Here, the second seal portion 26 surrounds the inside of the panel formation region 16 adjacent to the panel formation region 16 where the first seal portion 21 is provided. That is, the second seal portion 26 is provided with a cut 27 at a position opposite to the second seal portion 26, that is, at the center of both side sides 28 in the lateral direction. The cut 27 located at the center of the side 28 on the other side in the horizontal direction of the second seal portion 26 has a panel forming area 16 located on the other side in the horizontal direction of the second seal portion 26. The second seal portion 26 is provided so as to be integrally connected via a connection pattern 25 to and connected to a cut 27 located at the center of one side 28 in the lateral direction.

  A plurality, for example, three of the second seal portions 26 are continuously provided in the width direction of the large glass substrate 12 of the large array substrate 11. In other words, a plurality of the second seal portions 26 are continuously provided toward the side opposite to the side facing the first seal portion 21 on the large glass substrate 12, and the cuts 27 facing each other are formed. The connecting pattern 25 is integrally connected and connected. Further, the cut 27 on the other side of the second seal portion 26 located on the other side of the second seal portion 26 is located on the other side of the second seal portion 26 in the lateral direction. The first seal portion 21 provided in the positioned panel forming region 16 is integrally connected to a cut 20 on one side in the horizontal direction via a connection pattern 25. Further, the inlet pattern 22 is integrally provided in the cut 20 on the other side in the width direction of the first seal portion 21.

  Accordingly, each of the first seal portion 21 and the second seal portion 26 is integrally connected by the connection pattern 25 with the cuts 20 and 27 facing each other along the lateral direction of the large glass substrate 12. . And the 1st seal | sticker part 21 is provided in the both ends of the horizontal direction of these 1st seal | sticker parts 21 and the 2nd seal | sticker part 26 which were connected. Further, the cuts 20 on the opposite sides of the first seal portion 21 are opened at the injection port pattern 22. Further, the first seal portion 21 and the second seal portion 26 connected to each other are arranged in parallel in the vertical direction of the large-sized glass substrate 12, for example, in three rows. Therefore, the first seal portion 21 and the second seal portion 26 connected to each other are provided for each panel formation region 16 along the horizontal direction on the large glass substrate 12.

  On the other hand, after the large glass substrate 12 of the large array substrate 11 is divided so as to correspond to the glass substrate 3 of each array substrate 2, a counter substrate 31 is attached to face the glass substrate 3. That is, the array substrate 2 and the counter substrate 31 are bonded together via the seal pattern 18. As shown in FIGS. 6 and 7, the counter substrate 31 has a horizontal dimension equal to the horizontal dimension of the glass substrate 3 of the array substrate 2 and a vertical dimension slightly smaller than the vertical dimension of the glass substrate 3. A rectangular flat glass substrate 32 is provided. The glass substrate 32 is bonded onto the glass substrate 3 in a state where one side of the glass substrate 32 is aligned with one side of the glass substrate 3 of the array substrate 2. Further, the glass substrate 32 is bonded onto the glass substrate 3 in a state where the vertical direction of the glass substrate 32 is aligned with the vertical direction of the glass substrate 3 of the array substrate 2.

  A counter electrode (not shown) is stacked on the surface that is one main surface of the glass substrate 32, and an alignment film is stacked on the counter electrode. The cuts 20 and 27 of the seal pattern 18 between the counter substrate 31 and the array substrate 2 serve as a liquid crystal injection port 33 for liquid crystal injection. Each of the liquid crystal injection ports 33 is sealed with a sealing material 34 and closed. That is, a region in the seal pattern 18 between the array substrate 2 and the counter substrate 31 closed by the sealing material 34 becomes a liquid crystal sealing region F. In the liquid crystal sealing region F, the liquid crystal composition L is injected from either one of the liquid crystal injection ports 33 in a state where one of the liquid crystal injection ports 33 is closed by the sealing material 34, and light is emitted. A liquid crystal layer 35 as a modulation layer is formed. The liquid crystal layer 35 is formed by injecting the liquid crystal composition L into the liquid crystal sealing region F between the array substrate 2 and the counter substrate 31. In other words, the liquid crystal layer 35 is interposed and filled between the array substrate 2 and the counter substrate 31.

  Here, each counter substrate 31 is also formed by dividing a large counter substrate 41, which is a mother substrate, by cutting at predetermined intervals along the longitudinal direction and the width direction in accordance with the size of each counter substrate 31. Has been. Specifically, the large counter substrate 41 is composed of a plurality of counter substrates 31 that are connected in a longitudinal direction and a width direction, for example, five in the longitudinal direction, three in the width direction, and 15 in total. It is a board | substrate of a plate state.

  The large counter substrate 41 includes a large glass substrate 42 as a rectangular flat plate-like second substrate. In the large glass substrate 41, division reference lines 43 are provided in a lattice shape along the longitudinal direction and the width direction of the large glass substrate 42 in accordance with the size of the glass substrate 32 of each counter substrate 31. The division reference line 43 includes a vertical reference line 44 along the vertical reference line 14 provided on the large glass substrate 12 of the large array substrate 11. Further, the division reference line 43 is positioned along one side in the width direction of each panel forming region 16 on the large glass substrate 12 of the large array substrate 11 and from the other side in the width direction of each panel forming region 16. A horizontal reference line 45 is provided at each of the positions along the inner side. Therefore, a total of 15 panel forming regions 16 are provided on the surface of the large glass substrate 42 of the large counter substrate 41 in the same manner as the large glass substrate 12 of the large array substrate 11, and each of these panel forming regions 16 is provided. A margin area 17 is provided around the periphery.

  Next, a method for manufacturing the liquid crystal display device according to the first embodiment will be described.

  First, as shown in FIG. 1, as a pattern forming process as a sealing process, each panel forming area 16 on the surface of the large glass substrate 12 of the large array substrate 11 is provided with a first seal in each panel forming area 16. Cut portions 18 and the second seal portion 26 facing each other are connected by a connection pattern 25, and a seal pattern 18 in which an injection port pattern 22 is formed in a cut 20 on the opposite side of each first seal portion 21 is provided. Draw and form.

  Next, as a bonding process, the surface of the large glass substrate 42 of the large counter substrate 41 is opposed to the surface of the large glass substrate 12, and the large glass substrates 12, 42 are bonded together with the seal pattern 18.

  Thereafter, as a crushing process, the large glass substrate 12 of the large array substrate 11 and the large glass substrate 42 of the large counter substrate 41 bonded together by the seal pattern 18 are heated while being vacuum-pressed, so that these large glass substrates The seal pattern 18 between 12 and 42 is crushed to a predetermined thickness. In this state, the seal pattern 18 is thermally cured to bond and fix the large glass substrates 12 and 42 to each other.

  At this time, the air in each of the first seal portion 21 and the second seal portion 26 surrounded by the seal pattern 18 between the large glass substrates 12 and 42 is transferred to the first seal portion 21 and the second seal portion 26. Each connection pattern 25 of the seal portion 26 becomes an escape route and is ejected from the inlet pattern 22 of each first seal portion 21 to be exhausted.

  Thereafter, as a cutting process as a cutting process, the large glass substrate 12 of the large array substrate 11 and the large glass substrate 42 of the large counter substrate 41 are respectively connected to the vertical reference lines 14 and 44 of the divided reference lines 13 and 43. The array substrate 2 and the counter substrate 31 are cut along the vertical direction and connected along the vertical direction and the cut lines 20 and 27 are opened as the liquid crystal injection holes 33.

  Next, as a first sealing step, as shown in FIG. 2, the seal pattern 18 between the glass substrate 3 of the array substrate 2 and the glass substrate 32 of the counter substrate 31 connected along the vertical direction is arranged. Each of the liquid crystal injection ports 33 located on one side in the direction is hermetically sealed with a sealing material 34. At this time, it is not necessary to pressurize each of the glass substrate 3 of the array substrate 2 and the glass substrate 32 of the counter substrate 31.

  Further, the liquid crystal sealing region F between the glass substrate 3 of each array substrate 2 and the glass substrate 32 of the counter substrate 31 in which one of these liquid crystal injection ports 33 is hermetically sealed with a sealing material 34 is in a vacuum state. To.

  Thereafter, as shown in FIG. 3, in the liquid crystal injection step, the liquid crystal composition L is filled in the other liquid crystal injection port 33 between the glass substrate 3 of the array substrate 2 and the glass substrate 32 of the counter substrate 31. In a state where the liquid crystal composition L stored in the bottomed cylindrical liquid crystal board 51 is in contact with the liquid crystal composition L, each of the array substrate 2 and the counter substrate 31 is returned to a normal pressure which is an atmospheric pressure equal to the atmospheric pressure. The liquid crystal composition L is vacuum-injected into the liquid crystal sealing region F by the pressure difference between the atmospheric pressure in the liquid crystal sealing region F and the external pressure between the array substrate 2 and the counter substrate 31.

  Next, as shown in FIG. 4, as the second sealing step, the other liquid crystal between the array substrate 2 and the counter substrate 31 in a state where each of the array substrate 2 and the counter substrate 31 is pressurized. After each of the inlets 33 is hermetically sealed with a sealing material 34, the pressure applied to the array substrate 2 and the counter substrate 31 is released, and the liquid crystal between the array substrate 2 and the counter substrate 31 is released. A sealing material 34 is inserted between the array substrate 2 and the counter substrate 31 by a differential pressure between the pressure in the sealing region F and the external pressure.

  After that, as shown in FIG. 5, the glass substrate 3 of the array substrate 2 and the glass substrate 32 of the counter substrate 31 are cut along the horizontal reference lines 15 and 45, respectively, and shown in FIGS. In this way, the array substrate 2 and the counter substrate 31 are each divided into a plurality of liquid crystal display panels 1.

  As described above, according to the first embodiment, the first seal portion 21 and the second seal portion 26 drawn on each panel forming region 16 on the surface of the large glass substrate 12 of the large array substrate 11 are provided. Cuts 20 and 27 are provided at opposite positions in the lateral direction, and the cuts 20 and 27 facing each other of the first seal part 21 and the second seal part 26 are integrally connected by a connection pattern 25 and both sides The seal pattern 18 is formed by forming the inlet pattern 22 to be the liquid crystal inlet 33 in the cut 20 of the first seal portion 21 located at the position.

  As a result, by cutting along the longitudinal direction of the large glass substrates 12 and 42 between the cuts 20 and 27 connected by the connection patterns 25 of the first seal portion 21 and the second seal portion 26, respectively. The liquid crystal injection port 33 can be formed in each of the opposing cuts 20 and 27 of the connected first seal portion 21 and second seal portion 26.

  Further, when the large glass substrates 12 and 42 bonded with the seal pattern 18 are pressed and crushed, the connection pattern 25 between the first seal portion 21 and the second seal portion 26 of the seal pattern 18 is used. The air in the region surrounded by the first seal portion 21 and the second seal portion 26 moves, and the air moved through the connection pattern 25 is provided in the first seal portion 21. The exhaust pattern can be exhausted.

  Here, when the seal pattern 18 is formed independently for each panel formation region 16, an injection port pattern 22 to be the liquid crystal injection port 33 of the seal pattern 18 must be provided for each panel formation region 16. Since this seal pattern must be made longer, a blank area must be provided for each panel forming area 16. On the other hand, the first seal portion 21 and the second seal portion are formed by connecting the first seal portion 21 and the second seal portion 26 with the connection pattern 25 as described above. There is no need to provide an unnecessary blank area to be removed by cleaving between the 26. For this reason, it is not necessary to provide a blank area between the panel forming regions 16 of the large glass substrates 12 and 42, so that these panel forming regions 16 can be continuously provided on the large glass substrates 12 and 42.

  Therefore, the effective use area of the large glass substrates 12, 42 on which the first seal portion 21 and the second seal portion 26 are drawn can be increased. Therefore, particularly in the case of the liquid crystal display panel 1 for a mobile phone, since the number of impositions from one large glass substrate 12, 42 is large, the imposition efficiency of the large glass substrate 12, 42 is improved more efficiently. it can.

  Further, after the large glass substrates 12 and 42 are cut along the vertical reference lines 14 and 44 and before the liquid crystal composition L is injected, one liquid crystal injection port between the array substrate 2 and the counter substrate 31 For sealing with the sealing material 34 of 33, the apparatus used when sealing the other liquid crystal injection port 33 between the array substrate 2 and the counter substrate 31 with the sealing material 34 can be diverted. Further, the sealing of the one liquid crystal injection port 33 between the array substrate 2 and the counter substrate 31 before the liquid crystal composition L is injected with the sealing material 34 is performed between the array substrate 2 and the counter substrate 31. Since there is no need to evacuate the liquid crystal injection region F or pressurize the array substrate 2 and the counter substrate 31, sealing of the liquid crystal injection port 33 with the sealing material 34 is easy in the manufacturing process.

  Therefore, only a simple process for sealing one liquid crystal injection port 33 between the array substrate 2 and the counter substrate 31 is increased, and the number of apparatuses necessary for manufacturing the liquid crystal display panel 1 is not increased. For this reason, since it is not necessary to change the manufacturing process of this liquid crystal display panel 1 largely, there is little change of a manufacturing process balance. In addition, it is only necessary to install a simple sealing device that does not have a vacuum device or a pressurizing device. Therefore, the manufacturing process of the liquid crystal display panel 1 can be simplified as a whole.

  In the first embodiment, three second seal portions 26 are linearly connected via the connection pattern 25 between the two first seal portions 21 along the horizontal direction of the large glass substrates 12 and 42. However, as in the second embodiment shown in FIG. 8, it is necessary to connect the first seal portion 21 and the second seal portion 26 via the connection pattern 25 as in the second embodiment. Accordingly, the division unit 61 may be divided. Further, the cuts 20 and 27 facing each other located in the dividing portion 61 can form the injection port pattern 22 as necessary. As a result, the margin area between the panel forming areas 16 can be eliminated to some extent.

  Specifically, one second seal portion 26 is connected to the first seal portion 21 located on one side of the large glass substrate 12 in the horizontal direction. A cut 27 is not provided on the other side of the second seal portion 26 in the lateral direction. The first seal portion 21 located on the other side of the large glass substrate 12 has a second seal portion 26 and a first seal portion 21 along the horizontal direction of the large glass substrate 12. They are connected one by one. An inlet pattern 22 is provided in each of the opposing cuts 20 of the first seal portion 21.

  As a result, when the large glass substrates 12 and 42 are pressed and crushed in a state where the large glass substrates 12 and 42 are bonded to each other through the seal pattern 18, the large glass substrates 12 and 42 are Air in each of the first seal portion 21 and the second seal portion 26 surrounded by the seal pattern 18 passes through the connection pattern 25 between the first seal portion 21 and the second seal portion 26. Since the exhaust gas is exhausted from the inlet pattern 22 of the first seal portion 21, the same effects as those of the first embodiment can be obtained.

  In each of the above-described embodiments, the three-side free type liquid crystal display panel 1 in which the drive circuit is provided only on one side of the array substrate 2 has been described. However, the drive circuit is provided on at least two opposite sides of the array substrate 2. If not provided, even the two-side free type liquid crystal display panel 1 in which drive circuits are provided on two opposite sides of the array substrate 2 can be used correspondingly.

It is explanatory drawing which shows 1st Embodiment of the seal structure of this invention. It is explanatory drawing which shows the state which sealed the liquid crystal injection port after dividing | segmenting a sealing structure same as the above along the vertical direction. It is explanatory drawing which shows the state which inject | pours a liquid-crystal composition from the other liquid-crystal injection port of a seal structure same as the above. It is explanatory drawing which shows the state which sealed the other liquid crystal injection port of the sealing structure same as the above. It is explanatory drawing which shows the state which divides | segments a seal structure same as the above along a horizontal direction, and is set as a liquid crystal display device. It is a description top view which shows a liquid crystal display device same as the above. It is explanatory sectional drawing which shows a liquid crystal display device same as the above. It is explanatory drawing which shows 2nd Embodiment of the seal structure of this invention.

Explanation of symbols

1 Liquid crystal display panel as a liquid crystal display device
12 Large glass substrate as the first substrate
Panel formation area as 16 area
18 Seal pattern as seal structure
19 sides
20 Cuts as openings
21 First seal part as seal part
25 Connection pattern as connection part
26 Second seal part as seal part
28 sides
42 Large glass substrate as second substrate L Liquid crystal composition as liquid crystal

Claims (3)

A substrate,
A plurality of seal portions provided on one main surface of the substrate and surrounding a partial region of the one main surface of the substrate;
A connecting portion that connects adjacent sides of the plurality of seal portions along a width direction of the plurality of seal portions and communicates between the adjacent regions; and
A seal structure, comprising: an opening provided on a side of the seal portion that is positioned at an end in the width direction and facing the coupling portion, and that opens the side. 2. The seal structure according to claim 1, wherein at least two of the plurality of seal portions are coupled via the coupling portion in a width direction of the plurality of seal portions. The plurality of seal portions surrounding a partial region of one main surface of the first substrate, and the adjacent regions connected by connecting the adjacent sides of the plurality of seal portions along the width direction of the plurality of seal portions. A sealing step of providing, on the one main surface of the first substrate, a connecting portion that communicates with each other and an opening that opens the side of the seal portion facing the connecting portion;
A bonding step in which one main surface of the second substrate is opposed to one main surface on the first substrate and the first substrate and the second substrate are bonded together at the plurality of seal portions;
A cutting step of cutting each of the first substrate and the second substrate in correspondence with the plurality of seal portions to cut and open the connecting portion to form an opening;
A first sealing step for sealing one opening connected to the plurality of seal portions;
An injection step of injecting liquid crystal between the first substrate and the second substrate bonded to each other through the plurality of seal portions from the other opening connected to the plurality of seal portions;
And a second sealing step of sealing the other opening of the plurality of seal portions. A method of manufacturing a liquid crystal display device, comprising:

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