JP2000221512A - Liquid crystal display device and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shape of spacer which does not hinder the movement of a sealing material when the sealing material spreads pushingly in a sealing stage of two substrates, to achieve the shortening of the time for production, and to provide a liquid crystal display device which is uniform in inter-substrate distances. SOLUTION: This liquid crystal display device is constituted by holding a liquid crystal layer between a pair of substrates arranged to face each other via spacers and sealing a pair of the substrates by the sealing material 102 applied to a rectangular shape along the outer periphery of the substrates. At least one of a pair of the substrates includes the spacers 101 for maintaining the spacing between a pair of the substrates at a prescribed spacing in the region where the sealing material is formed. The spacers 101 are so installed that the length along the transverse direction of the region formed with the sealing material is longer than the length in the direction orthogonal with the transverse direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the shape of a column spacer for a liquid crystal display device or the like.

[0002]

2. Description of the Related Art In a typical liquid crystal display device, a pair of substrates of an array substrate and a counter substrate sandwich a liquid crystal layer, and a seal arranged in a substantially rectangular shape around the liquid crystal layer to prevent the liquid crystal layer from leaking out. It is constructed by sealing with a material.

In the step of sealing two substrates, a sealing material is applied onto one of an array substrate and a counter substrate,
The sealing material is cured in a state where the two substrates are pressed so that the distance between the substrates becomes a predetermined value, with the other substrate and the electrodes facing each other.

[0004] In the sealing method, a rigid pressure seal in which a plurality of cells are stacked and pressed between two plates, and one cell is set between a set of sheets and a tray, There is air pressure sealing in which the entire surface of the cell is pressurized by the atmospheric pressure by evacuating the air between the cell and the tray.

[0005]

When a columnar spacer fixed to one substrate is used as a spacer for holding a gap between two substrates, the columnar spacer disposed outside the sealing material application region in a sealing material application state is used. Among the spacers, there are spacers that are spread out by pressurization in the sealing process of the substrate and are placed in the seal material forming region after the seal material is cured, which will be described below with reference to FIG.

FIG. 2 shows a state of the seal member 202 and the column spacer 201 arranged near the seal member in the sealing step of the liquid crystal display device using the conventional column spacer. The columnar spacer 201 is in a state where the sealing material is applied.
It is installed outside the sealing material application area, and as shown in FIG.
After the sealing material is cured, it is installed in the sealing material forming region. At the time of sealing, the flow of the sealing material 202 is hindered by the columnar spacer 201, and as shown in FIG.
99 may occur or the shape of the sealing material 202 may deteriorate.

Further, it has been confirmed that when the sealing material is sealed by rigid pressure sealing in a structure in which a columnar spacer is provided in the vicinity of the sealing material, the generation of the bubbles is small.
However, in this method, the in-plane uniformity of the pressure distribution is poor, and the pressing force particularly near the center of the substrate becomes small, and the distance between the substrates becomes uneven. In addition, there is a problem that a lead time is required due to a slow heating at a heating rate of 1 ° C./min.

[0008] On the other hand, it has been found that when sealing is performed by air pressure sealing, although the sealing process can be automated and the lead time can be reduced, a rapid rise in temperature is required, and the generation of bubbles described above increases. .

As described above, since the flow of the sealing material is hindered by the columnar spacers during the sealing step, bubbles are generated in the sealing material and the shape of the sealing material is deteriorated. When bubbles occur, the width of the seal is reduced at that location, which may reduce the reliability of the environment resistance. Further, when a vacuum is applied in the vacuum annealing or injection step, the air in the bubbles expands, and there is a possibility that peeling may occur at the seal portion. Further, when the shape of the sealing material is deteriorated, it becomes impossible to cut the substrate straight in the thickness direction of the substrate at the time of scribing the substrate, and the production yield is reduced.

As a result of the inventor's sincere research, it has been found that the shape of the spacer, which has been conventionally implemented, causes the formation of bubbles and the deterioration of the shape of the seal portion. In view of the above, the present invention proposes a spacer shape that does not hinder the spread of the seal material when the width of the seal material is expanded by sealing, thereby preventing generation of bubbles in the seal material and deterioration of the shape of the seal material. It is an object of the present invention to provide a highly liquid crystal display device. Further, the present invention provides a liquid crystal display device which achieves a reduction in manufacturing time and has a uniform distance between substrates.

[0011]

According to the first aspect of the present invention,
A liquid crystal display device in which a liquid crystal layer is sandwiched between a pair of substrates opposed to each other via a spacer, and the pair of substrates is sealed with a sealing material applied in a rectangular shape along the outer periphery of the substrate. One of the pair of substrates includes the spacer for maintaining a predetermined interval between the pair of substrates in a sealing material forming region, and the spacer has a length along a width direction of the sealing material forming region, It is characterized in that it is longer than the length in the direction perpendicular to the width direction.

According to the present invention, when the width of the sealing material is expanded in the sealing step and the sealing material encounters the spacer, since the shape of the spacer does not hinder the flow of the sealing material, bubbles are less likely to be generated.

The invention according to claim 6 is characterized in that the sealing method is air pressure sealing for sealing the pair of substrates by an air pressure method. According to the sixth aspect of the present invention, the lead time required for the sealing step can be significantly reduced, and since the pressurizing method is an air pressurizing method, the entire surface of the substrate can be pressurized uniformly with high precision.

In particular, when the sealing material is applied, the spacer is disposed outside the sealing material application region, and when the sealing material is cured, the spacer is disposed in the sealing material forming region. By making the length along the direction longer than the length in the direction perpendicular to the width direction, the spreading speed of the sealing material in the sealing step is increased to, for example, 19.
When the temperature is increased to 6 ° C./min, the effect of preventing the generation of air bubbles appears remarkably.

According to an eleventh aspect of the present invention, there is provided a pair of substrates arranged to face each other, and a rectangular sealing region for bonding the pair of substrates via a sealing material disposed along a peripheral portion.
And a liquid crystal layer held between the pair of substrates, wherein at least one of the pair of substrates has the spacer for maintaining a predetermined interval between the pair of substrates in a sealing material forming region. The spacer, which is disposed on one of the pair of substrates, is fixedly installed in a sealing material forming area, and is uniformly installed in the entire sealing material forming area.

According to the eleventh aspect of the present invention, since the spacer fixed and disposed in the seal material forming region is uniformly disposed throughout the seal material forming region, the distance between the substrates in the seal material forming region is reduced. Maintained with high precision and uniformity.

According to a twelfth aspect of the invention, there is provided a method of forming an electrode pattern on at least one of two substrates.
Installing a spacer on one of the two substrates, applying a sealing material to one of the two substrates in a rectangular shape, and setting the two substrates so that the electrode pattern is inside. A method of manufacturing a liquid crystal display device, comprising: a step of superposing at a predetermined distance; a step of curing the sealing material to seal the two substrates; and a step of injecting a liquid crystal between the sealed substrates. When the sealing material is applied, the spacer is disposed outside the sealing material application region, and when the sealing material is cured, the spacer disposed in the sealing material forming region is formed by cutting the spacer in a plane parallel to the substrate. Has a streamlined shape, and the longitudinal direction of the cross section and one side of a rectangular sealing material located at the shortest distance from the spacer are installed in a substantially perpendicular relationship.

According to the twelfth aspect of the present invention, the cross section of the spacer near the seal member is streamlined and has a shape that does not hinder the flow of the seal member. Since one side of the shaped seal material is installed in a substantially vertical relationship, bubbles are generated even if the columnar spacer is installed at the position where the seal material expands in the sealing process and the seal material meets the spacer. It becomes difficult.

In the third and twelfth aspects of the present invention, the phrase that the spacer is disposed outside the seal material application region when the seal material is applied means that the two substrates are overlapped and the seal is viewed from a direction perpendicular to the substrates. In addition to the state in which the spacer and the spacer are arranged so as not to contact with each other, the state includes the state in which the spacer partially overlaps with the sealing material. In addition, the present invention is applicable not only to the spacer for maintaining the distance between the substrates but also to the transfer provided at several places made of silver paste or the like for conduction between the electrodes formed on each of the two substrates. Indicates a spacer or a transfer for maintaining a distance between substrates. Hereinafter, a detailed description will be given based on specific examples.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.
A liquid crystal display device will be described as an example with reference to the drawings. FIG. 1 is a cross-sectional view of the liquid crystal display device, and FIG. 3 is a partial plan view of the liquid crystal display device showing the positional relationship between the sealing material and the columnar spacer at the time of applying and curing the sealing material, respectively. FIG. FIG. 7 is a schematic plan view of the liquid crystal display device showing the formation region of the sealing material.

The liquid crystal display device 100 of this embodiment has a structure shown in FIG.
As shown in FIG.
4 facing each other, sandwiching a liquid crystal layer 105 between its substrates,
The distance between the substrates is held by spacers 101 and 141. As shown in FIG. 7, the two substrates are sealed by a seal material 102 arranged in a substantially rectangular shape along the outer periphery of the substrates. Here, the outer periphery of the substrate refers to the outer periphery of one liquid crystal cell, and can be applied to a case where a plurality of liquid crystal cells are mounted on one set of large substrates. FIG. 1 shows a longitudinal sectional view of the display area A and a longitudinal sectional view of the sealing material forming area B, and the longitudinal sectional view of the sealing material forming area B of FIG. This corresponds to a cross-sectional view taken along the line -B.

The array substrate 103 is composed of a signal line 137 disposed substantially in parallel on the substrate 131 at regular intervals, and a scanning line substantially orthogonal to the signal line 137 and electrically insulated from the signal line 137 via the insulating film 136. Line (not shown), a TFT disposed at each intersection thereof, and a pixel electrode 1 connected thereto.
40. The detailed structure will be described below in detail with reference to FIG. 1. A channel layer 111 disposed on a transparent substrate 131, a conductive region 112 serving as a source / drain region, and a gate oxide film formed so as to cover them 133 and a gate electrode 113 disposed on the gate oxide film 133, a coplanar polysilicon TFT is formed.
Is configured. Then, a scanning line (not shown) and gate oxide film 1 formed in the same process as gate electrode 113 are formed.
Each of the signal lines 137 arranged on 33 is connected to a conductive region via a contact hole. Signal line 13
, R, R,
G and B colored layers 115 are formed, and I
Pixel electrode 140 made of TO (Indium Tin Oxide)
Are arranged, and the pixel electrode 140 is electrically connected to the signal line 137. A columnar spacer 141 is formed in the non-pixel electrode formation region on the coloring layer 115, and an alignment film 142 is provided on the entire surface of the substrate so as to cover the columnar spacer 141, the pixel electrode 140, and the coloring layer 115.

On the other hand, an opposing substrate 104 arranged opposite to the array substrate 103 is configured by arranging an opposing electrode 144 and an alignment film 143 on a glass substrate 145. Next, the structure near the sealing material will be described. As shown in FIG.
A columnar spacer 101 is provided in the sealing material forming region, and the columnar spacer is arranged along a rectangular seal shape. As shown in FIG. 3B, the columnar spacers 101 are arranged across the dividing line L <b> ₁ of the seal material forming region, and are fixedly arranged on the array substrate 103. The positional relationship between the columnar spacer 101 near the seal material and the seal material will be described. As shown in FIG. 3A, at the time of application, spacers 101a are provided on both sides along the seal material 302 outside the seal material application region. A columnar spacer 101b is provided in the sealing material application region. Spacer 1
01a has a length in the seal width direction longer than the length in the direction orthogonal to the width direction, and has a streamline-shaped cross section when cut along a plane parallel to the substrate.
It is a 0 μm elliptical column with a height of 5.2 μm, and the spacer 101 b is a column with a diameter of 50 μm and a height of 5.2 μm.

After the sealing material is hardened due to the spread of the sealing material in the substrate sealing step, as shown in FIG. 3B, the columnar spacers 101a are present in the region where the sealing material 102 is formed.

When the sealing material is applied, the shape of the columnar spacer 101a placed outside the sealing material application area is a streamline such as an elliptical cross section when cut along a plane parallel to the substrate.
02 is not obstructed, and the longitudinal direction of the cross-section and one side of the rectangular sealing material 302 located at the shortest distance from the spacer are installed in a substantially perpendicular relationship. The size of the cross-sectional shape when the columnar spacer 101a is cut along a plane parallel to the substrate may not be constant. The distance c from the sealing material 302 at the time of application is 40 to 50.
A columnar spacer 101a is installed at a distance of μm,
The columnar spacer 101a is installed such that the longitudinal direction of the cross-section is perpendicular to one side of the rectangular shape of the sealing material 302, in other words, the longitudinal direction of the spacer cross-section is substantially the same as the width direction of the sealing material. . Further, the distance between the columnar spacer 101a and the adjacent columnar spacer 101a 'is desirably 6 mm or less. This is because a distance of 6 mm or more may cause unevenness in the distance between the substrates. Since the columnar spacer 101a plays an important role in maintaining the distance between the substrates at the seal portion, after the seal material is hardened, both of the two regions when the seal material formation region is divided into two regions by a dividing line that divides the seal material formation region into two equal parts. It is installed on both sides of the sealing material application area at the time of application so that it is installed in the area. Since the columnar spacers are provided on both sides along the sealing material application region and further in a staggered manner, the distance between the substrates near the sealing material forming region is uniformly maintained in the cell state.

In this embodiment, since the spacers are fixedly provided on the dividing line of the seal material forming area and on both sides thereof, the spacers are uniformly installed in the seal material forming area, and the distance between the substrates of the seal material is maintained uniformly. You.

Here, a dividing line for bisecting the above-mentioned sealing material forming region will be described with reference to FIG. FIG.
The state of the sealing material applied and cured on the substrate is shown. At the both ends in the width direction of the sealing material, minute irregularities are generated, and the middle point of the line connecting the opposite points of the ends in the width direction, that is, the set of substantially the center in the width direction is L _1, and L ₁ is referred to as a dividing line that bisects the seal formation region.

After the sealing material is cured, the columnar spacers are installed on both sides of the sealing material forming region with the above dividing line therebetween.
As shown in FIG. 9A, the columnar spacer 101a is divided by the dividing line L _1.
May be installed with a predetermined distance from, also as shown in FIG. 9 (b), the end portion of the columnar spacers 101a may be disposed so as to overlap with the dividing line L _1. That positioned on both sides in the longitudinal direction of the bisecting boundary dividing line L ₁ of the segment La respectively sealant formation region of each columnar spacer 101a, a state in which the line segments La does not match the dividing line L _1, It is said that the columnar spacers are installed on both sides of the dividing line of the sealing material forming region.

Next, a method of manufacturing the liquid crystal display device 100 of this embodiment will be described. First, a counter substrate 104 and an array substrate 103 are prepared. The array substrate 103 is manufactured as follows.

On a glass substrate 131, a two-layer film made of a silicon oxide film and a silicon nitride film was deposited as an insulating film 132 by atmospheric pressure CVD or plasma CVD, and an amosphasic silicon layer was deposited thereon to a thickness of 100 nm. rear,
The amorphous silicon layer is annealed with an excimer laser to crystallize the amorphous silicon layer into a polysilicon layer.

Further, the polysilicon layer is patterned to form a desired shape, and silicon oxide SiOx is formed on the entire surface covering the polysilicon layer by a CVD method, thereby forming a gate oxide film 133. A gate metal film is deposited on the gate oxide film 133, and a pattern of the gate electrode 113 is formed by using a photolithography technique.

Thereafter, for example, phosphorus ions (P ⁺ ) are doped from above the gate electrode 113 to form a source region 114 and a drain region 112 which are conductive regions 112 in the polysilicon layer, and are connected to the channel layer 111. It becomes two conductive regions.

Further, a SiOx film serving as a gate oxide film 133 is formed so as to cover all of these upper surfaces by a CVD method or the like.
Is formed, and the gate insulating film 134 and the gate oxide film 13 are formed.
After forming a contact hole reaching the source region 114 through the hole 3, a metal film is formed and patterned to form a source electrode 137. At the same time, a drain bus wiring 138 which also serves as a contact hole and a drain electrode is formed in the drain region 112.

Further, after forming an insulating layer 139 having a two-layer structure of silicon oxide SiOx and silicon nitride SiNx on the entire surface of the substrate, a green colored layer is formed by exposing, developing, and firing in a predetermined pattern, and similarly formed. Blue and red colored layers are sequentially formed.

Further, a black resist is applied on the colored layer using a spinner, dried at 80 ° C. for 2 minutes, and then, using a predetermined photomask, at a wavelength of 365 nm and an exposure of 250 mJ / c.
Exposure at m ² . After this, TMAH (tri
methyl ammonium hydride) aqueous solution for 60 seconds,
By baking at 220 ° C. for 60 minutes, columnar spacers 141 and 101 near the 5.2 μm-thick display region and the sealing material were formed.

Next, after forming a pixel electrode 140 connected to the source electrode 137 through an opening formed in the coloring layer 115 and the insulating layer 139, the columnar spacer 141, the pixel electrode 140, and the coloring layer 115 are covered. An alignment film is provided, and an array substrate 103 is formed.

On the other hand, the counter substrate 104 is formed by sequentially forming a counter electrode 144 and an alignment film 143 on a transparent insulating substrate 145 such as glass. Thereafter, as shown in FIG. 7, a sealing material 102 to be cured by ultraviolet rays is applied onto the array substrate 103 using a dispenser or a mask pattern. At this time, the width after application of the sealing material 302 is about 350 to 400 μm,
An opening portion serving as a liquid crystal injection port 700 is provided in one place in a later step, and is applied in a frame shape, here a rectangular shape, along the outer periphery of the display area.

Next, the array substrate 103 and the counter substrate 104
Are overlapped so that the electrode forming surfaces face each other, and then are adhered and sealed via a sealing material applied along the outer periphery of the liquid crystal layer 105 region.

The distance between the array substrate 103 and the counter substrate 104 is 5.2 μm, and the height of the columnar spacer 101a embedded in the sealing material by sealing is 5.2 μm.
Sealing of the sealing material 102 is performed by air pressure sealing.
As shown in FIG. 4, the array substrate 103 and the counter substrate 104 prepared as described above are overlapped so that the electrodes face each other, placed on the lower tray 421, and covered with the pressure sheet 423. I do. Next, the vacuum suction device is driven to suck air between the pressure sheet 423 and the lower tray 421 from the vacuum suction port 424. The array substrate and the opposing substrate are uniformly sucked over the entire surface of the cell 420 formed by laminating the sealing member through the sealing material, and thus the cell 420 is uniformly pressed.

In such a state, the upper IR heater 4
25, the temperature is raised by the lower IR heater 426 at a speed of 19.6 ° C./min for 23 minutes, and the sealing material is uniformly cured. FIG. 5 shows a pressure distribution on the cross section of the cell 420 sealed by air pressure. This indicates that the entire surface of the substrate is uniformly and accurately pressed.

Thereafter, a liquid crystal is injected, and the liquid crystal injection port 700 is sealed with a sealing agent to complete a liquid crystal cell. No bubbles were observed near the spacer in the sealing material forming region of the liquid crystal display device thus formed.

The shape of the columnar spacer is not limited to the above-mentioned shape, but may be any shape that does not hinder the movement of the columnar spacer when it is pushed and spread by sealing the sealing material. However, the present invention is not limited to the above embodiment.

For example, FIG. 6 shows a cross-sectional shape of a columnar spacer that can be used in the present invention. FIG. 6C shows an elliptical shape according to the present embodiment. As examples of other cross-sectional shapes, the elliptical shape in FIG. 6C is transformed into a streamline shape as in FIGS. 6A and 6B, a square in FIG. 6D, a hexagon in FIG. And other polygons. Also, a streamline shape in which a part of the curvature circle is opposed via a rectangular parallelepiped as shown in FIG. In any case, the length of the cross section along the width direction of the seal is longer than the length in the direction orthogonal to the width direction, and when the seal material is pushed and spread by sealing, the spread direction with respect to the seal material. Is not obstructed. The spreading direction, that is, the width direction of the sealing material substantially matches the longitudinal direction of the cross section of the spacer.

As described above, in the present invention, the longitudinal direction of the cross section of the spacer and the one side of the rectangular sealing material at the time of application which is the shortest distance from the spacer have a substantially perpendicular relationship. By making the spreading direction of the material substantially coincide with the longitudinal direction of the streamlined spacer, a liquid crystal display device having a sealing material without bubbles can be obtained.

Further, by arranging the spacers in the regions on both sides of the dividing line when the width of the sealing material forming region is bisected in a state after the sealing material is cured, that is, the spacer is formed along the dividing line. In this case, the distance between the substrates can be kept uniform with high accuracy.

Further, in the liquid crystal display device using polysilicon for the TFT as in this embodiment, the driving circuit can be formed simultaneously on the same substrate as the substrate on which the TFT is formed. Such a drive circuit integrated LCD (liquid crysta
In l display), a sealing material and a driving circuit may be overlapped in order to increase the effective display area of the substrate. Usually, the sealing material contains a fiber in order to maintain the distance between the two substrates, but in the case of a structure in which the sealing material and the driving circuit are overlapped, the fiber destroys the driving circuit. There is fear.

For this reason, it is desirable to use a sealing material containing no fiber, and when such a sealing material is used, it is necessary to install a spacer near the sealing material. It is effective to apply the present invention to the shape of.

In the above embodiment, the columnar spacer is fixedly arranged on the array substrate and the sealing material is applied. However, the columnar spacer and the sealing material are respectively provided on either the array substrate or the opposing substrate. It may be arranged or applied. For example, a columnar spacer may be arranged on one of the two substrates and a sealing material may be applied on the other.

Also, when the columnar spacer is installed outside the sealing material application region as in the above embodiment before the pressurization, or when the columnar spacer is partially installed in the sealing material formation region. Also in this case, generation of bubbles can be prevented by making the major axis direction of the cross section of the columnar spacer 101a substantially parallel to the seal width direction.

In this embodiment, a liquid crystal display device in which a counter electrode and a pixel electrode are formed as display patterns on two transparent insulating substrates, respectively, is used.
The present invention can also be applied to a liquid crystal display device in which a counter electrode and a pixel electrode are arranged as a display electrode pattern on one substrate as in the case of a (neSwitch) mode.

[0051]

According to the present invention, by providing a spacer in which the length along the width direction of the seal material forming region is longer than the length in the direction orthogonal to the width direction, the sealing material can be formed at the time of sealing. A columnar spacer that does not hinder the flow of the sealing material is realized, and bubbles and a deterioration in shape that cause a reduction in reliability are reduced. Furthermore, by performing sealing by air pressure sealing,
A lead time can be reduced, and a liquid crystal display device having a highly accurate and uniform distance between substrates can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a liquid crystal display device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between a columnar spacer and a sealing material when a conventional columnar spacer is used.

3A and 3B show a positional relationship between a sealing material and a columnar spacer. FIG. 3A is a diagram showing a state when the sealing material is applied, and FIG. 3B is a diagram showing a state after curing.

FIG. 4 is a schematic sectional view of an air pressure sealing device using an air pressure method.

FIG. 5 is a diagram showing a distribution of pressure applied to a substrate by an air pressure method.

FIG. 6 is a view showing another embodiment of the sectional shape of the columnar spacer.

FIG. 7 is a plan view of a substrate on which a sealing material is applied.

FIG. 8 is an enlarged plan view of a sealing material applied to a substrate.

FIG. 9 is a diagram illustrating an arrangement relationship between a dividing line of a sealing material and a columnar spacer.

[Explanation of symbols]

101a: a spacer located outside the display area and provided outside the seal application area at the time of applying the seal 102: a cured sealing material 105: liquid crystal layer 131: substrate 141: spacer provided in the display area 145: substrate 302: Sealing material for application

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroshi Otaguro 1-9-2, Hara-cho, Fukaya-shi, Saitama F-term in Toshiba Fukaya Electronics Factory (reference) 2H089 LA09 LA12 NA39 NA42 NA48 PA01 QA12 QA14 SA01 TA09

Claims (13)

[Claims] 1. A liquid crystal in which a liquid crystal layer is sandwiched between a pair of substrates opposed to each other via a spacer, and the pair of substrates is sealed with a sealing material applied in a rectangular shape along the outer periphery of the substrate. In the display device, at least one of the pair of substrates includes the spacer for maintaining a predetermined interval between the pair of substrates in a seal material forming region, and the spacer extends along a width direction of the seal material forming region. A liquid crystal display device, wherein a length is longer than a length in a direction orthogonal to the width direction. 2. The liquid crystal display device according to claim 1, wherein the spacers are arranged with a dividing line substantially along the center in the width direction of the sealing material forming region. 3. The spacer is disposed on one of the pair of substrates, is disposed outside a seal material application region when the seal material is applied, and is disposed in a seal material formation region when the seal material is cured. 2. The liquid crystal display device according to claim 1, wherein 4. The liquid crystal display device according to claim 1, wherein the spacers are provided on both sides along a dividing line substantially along the center in the width direction of the sealing material forming region. 5. The liquid crystal display device according to claim 1, wherein the spacer has a streamlined cross section when the spacer is cut along a plane parallel to the substrate. 6. The liquid crystal display device according to claim 1, wherein the sealing method is air pressure sealing for sealing the pair of substrates by an air pressure method. 7. A driving circuit for driving the liquid crystal display device is disposed on one of the pair of substrates, and the driving circuit is disposed in the sealing material forming region. Liquid crystal display device. 8. A liquid crystal in which a liquid crystal layer is sandwiched between a pair of substrates opposed to each other via a spacer, and the pair of substrates is sealed with a sealing material applied in a rectangular shape along the outer periphery of the substrate. In the display device, the spacer disposed on one of the pair of substrates is provided in a sealing material forming region,
A liquid crystal display device is provided in both of the two seal material forming regions divided by a dividing line that bisects the width of the seal material. 9. The liquid crystal display device according to claim 8, wherein the spacers are arranged in a staggered manner with the dividing line as a boundary. 10. The spacer has a streamlined cross-sectional shape when the spacer is cut along a plane parallel to the substrate, and the longitudinal direction of the cross-section substantially coincides with the width direction of the sealing material. 9. The liquid crystal display device according to claim 8, wherein: 11. A pair of substrates disposed to face each other, a rectangular sealing region where the pair of substrates are bonded via a sealing material disposed along a peripheral portion, and held between the pair of substrates. And a liquid crystal display device including a liquid crystal layer, at least one of the pair of substrates includes the spacer for maintaining a predetermined interval between the pair of substrates in a sealing material forming region, and includes one of the pair of substrates. The liquid crystal display device, wherein the disposed spacer is fixedly installed in a sealing material forming area and is uniformly installed in the entire sealing material forming area. 12. A step of forming an electrode pattern on at least one of the two substrates, a step of installing a spacer on one of the two substrates, and a sealing material on one of the two substrates. A step of applying a rectangular shape, a step of overlapping the two substrates at a predetermined distance so that the electrode pattern is inside, and a step of curing the sealing material and sealing the two substrates, A step of injecting liquid crystal between the sealed substrates, wherein the sealing material is disposed outside a sealing material application region when the sealing material is applied, and the sealing material is hardened when the sealing material is cured. The spacer arranged in the formation region has a streamlined cross-sectional shape when the spacer is cut along a plane parallel to the substrate, and has a rectangular seal located in the longitudinal direction of the cross-section and the shortest distance from the spacer. Lumber A method for manufacturing a liquid crystal display device, wherein the liquid crystal display device is installed so that one side is substantially perpendicular to the other. 13. The method for manufacturing a liquid crystal display device according to claim 12, wherein said sealing step is air pressure sealing.