WO2011148759A1

WO2011148759A1 - Liquid crystal display device manufacturing method

Info

Publication number: WO2011148759A1
Application number: PCT/JP2011/060445
Authority: WO
Inventors: 康弘古澤
Original assignee: シャープ株式会社
Priority date: 2010-05-27
Filing date: 2011-04-28
Publication date: 2011-12-01
Also published as: JPWO2011148759A1; CN102934014A

Abstract

The disclosed liquid crystal display device manufacturing method involves a step for forming on a substrate (200) a seal material (500) for sealing liquid crystal (170), and a step for adding dropwise, in a display area (210) on the substrate (200) surrounded by the seal material (500), liquid crystal (170) on a drip position pattern configured from multiple points separated by a prescribed interval and positioned on multiple parallel lines segments from one end to the other end. Further, the liquid crystal display device manufacturing method involves a step for bonding in a vacuum the substrate (200) and an opposing substrate (290), and a step for curing the seal material (500). In the step for adding the liquid crystal (170) dropwise, although the liquid crystal (170) is dripped without changing the prescribed drip position pattern on the display region (210) on the whole, the amount of liquid crystal (170) dripped in the corners of the drip position pattern is greater than that dripped in the center area. By means of this configuration, it is possible to shorten the manufacturing cycle time while making the gap between substrates uniform.

Description

Manufacturing method of liquid crystal display device

The present invention relates to a method for manufacturing a liquid crystal display device, and more particularly to a method for manufacturing a liquid crystal display device in which liquid crystal is sealed between two substrates using a dropping injection method.

As prior literatures that disclose a method for manufacturing a liquid crystal display device that seals liquid crystal using a dropping injection method, Japanese Patent Application Laid-Open No. 2005-115155 (Patent Document 1), Japanese Patent Application Laid-Open No. 2001-281678 (Patent Document 2), and the like. Japanese Laid-Open Patent Publication No. 9-311340 (Patent Document 3) is available.

In the method of manufacturing a liquid crystal panel described in Japanese Patent Application Laid-Open No. 2005-115155 (Patent Document 1), first, a first sealing material that surrounds a display region and an outer side of the display region are provided on one of a pair of opposing substrates. And a second sealing material for forming a reduced pressure region. After dropping the liquid crystal in a reduced pressure state, the other substrate is bonded, and the sealing material is cured while pressing the substrate from both sides in the atmospheric state to seal the liquid crystal.

Further, in the method for manufacturing a liquid crystal panel described in Japanese Patent Application Laid-Open No. 2005-115155 (Patent Document 1), the distance between the inner edge portion of the first sealing material and the outer edge portion of the liquid crystal dropping region, and the outer edge of the first sealing material. The dropping region of the liquid crystal is defined so that the interval between the portion and the inner edge portion of the second sealing material satisfies a predetermined interval. In this way, the gap between the substrates is made uniform by antagonizing the pressing force at the periphery of the liquid crystal panel when the substrates are bonded together.

In the method of manufacturing a liquid crystal display device described in Japanese Patent Application Laid-Open No. 2001-281678 (Patent Document 2), an optimal drop amount of liquid crystal is predicted using a laser displacement type or the like, and the drop amount of liquid crystal is based on the predicted value. Is controlling. In this manner, it is possible to suppress the generation of bubbles due to insufficient amount of the sealed liquid crystal and the occurrence of display unevenness due to the large amount of the sealed liquid crystal.

In the method of manufacturing a liquid crystal display device described in Japanese Patent Laid-Open No. 9-31340 (Patent Document 3), the display area is divided into blocks, and a dropping pattern and a dropping amount of liquid crystal determined for each block are dropped. . In this way, the in-plane gap between the bonded substrates is made uniform.

JP 2005-115155 A JP 2001-281678 A Japanese Patent Laid-Open No. 9-311340

As described above, in order to obtain high-quality display quality, the liquid crystal dropping position and the liquid crystal dropping amount on the substrate are devised. When a liquid crystal is dropped onto a substrate, a device that pressurizes a dispenser or syringe with a pulse motor is used.

In the display area on the substrate where the liquid crystal is dripped, when the liquid crystal dripping position pattern changes irregularly for each place, the time required for dripping the liquid crystal becomes long. Specifically, the time required for positioning the dispenser or syringe when the liquid crystal is dropped is increased. In this case, the manufacturing tact time of the liquid crystal display device becomes long, which increases the manufacturing cost of the liquid crystal display device.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a method for manufacturing a liquid crystal display device capable of reducing the manufacturing tact time while making the gap between the substrates uniform. To do.

In the liquid crystal display device manufacturing method according to the present invention, liquid crystal is injected by dropping liquid crystal onto a substrate, bringing the liquid crystal dropping surface side of the substrate into opposition to the opposite substrate and bonding them in a vacuum, and then returning to atmospheric pressure. It is a manufacturing method of a liquid crystal display device. A manufacturing method of a liquid crystal display device includes a step of forming a sealing material on a substrate for sealing liquid crystal, and one end of each of a plurality of line segments parallel to each other in a display region on the substrate surrounded by the sealing material And dropping the liquid crystal on a dropping position pattern composed of a plurality of points positioned at a predetermined interval from the other end to the other end. In addition, the method for manufacturing a liquid crystal display device includes a step of bonding the substrate and the counter substrate in a vacuum, and a step of curing the sealing material. In the step of dripping the liquid crystal, the liquid crystal is dripped without changing the predetermined dripping position pattern as a whole of the display area, and the dripping amount of the liquid crystal is increased from the central portion at the corner of the dripping position pattern.

Preferably, in the step of dropping the liquid crystal, the amount of liquid crystal dropped is increased by increasing the number of liquid crystal drops.

In one embodiment of the present invention, in the step of dripping liquid crystal, the amount of liquid crystal dripped is increased as it approaches the corner.

According to the present invention, it is possible to shorten the manufacturing tact time while making the gap between the substrates uniform.

It is a side view which shows a part of liquid crystal dropping apparatus used for the manufacturing method of the liquid crystal display device which concerns on Embodiment 1 of this invention. It is the figure which looked at the liquid crystal dropping apparatus of FIG. 1 from arrow II. It is a top view explaining the movement of the gantry at the time of dripping a liquid crystal with the dripping position pattern of the embodiment. It is a top view which shows the state by which the liquid crystal was dripped on the board | substrate in a reference example. It is a top view which expands and shows display field 210 in a reference example. It is a top view which shows the state which bonded together the board | substrate and the counter substrate in the reference example. It is a top view which shows the dripping position pattern of the liquid crystal in a comparative example. It is a figure explaining the movement of the gantry 110 for dripping a liquid crystal to the dripping position pattern of a comparative example. It is a top view which shows the state by which the liquid crystal was dripped on the board | substrate in the same embodiment. It is a top view which shows the state by which the liquid crystal was dripped on the board | substrate in Embodiment 2 of this invention.

Hereinafter, Embodiment 1 of the method for manufacturing a liquid crystal display device according to the present invention will be described with reference to the drawings. In the following description of the embodiments, the same or corresponding parts in the drawings are denoted by the same reference numerals, and the description thereof will not be repeated.

(Embodiment 1)
FIG. 1 is a side view showing a part of a liquid crystal dropping device used in a method for manufacturing a liquid crystal display device according to Embodiment 1 of the present invention. FIG. 2 is a view of the liquid crystal dropping device of FIG. 1 as viewed from an arrow II.

As shown in FIG. 1, in a liquid crystal dropping device 100 used in the method for manufacturing a liquid crystal display device according to Embodiment 1 of the present invention, a rectangular parallelepiped gantry 110 is supported by a transfer device (not shown) and is movable. Yes.

A syringe 130 and a liquid crystal holding tank 140 are disposed on the top of the gantry 110. The syringe 130 and the liquid crystal holding tank 140 are connected by a tube 160. The tube 160 is piped into the gantry 110 via the valve 150.

A nozzle 120 serving as a liquid crystal discharge port is disposed below the gantry 110. The nozzle 120 is connected to a tube 160 piped in the gantry 110. As shown in FIG. 2, a discharge port 121 is formed in the nozzle 120. The syringe 130, the liquid crystal holding tank 140, the valve 150, and the nozzle 120 are combined to form a liquid crystal discharge unit.

A stepping motor is connected to the syringe 130, and the liquid crystal 170 in the liquid crystal holding tank 140 is discharged from the nozzle 120 by pressurizing the syringe 130 with the stepping motor. By using the stepping motor, the applied pressure of the syringe 130 can be made substantially uniform, so that the discharge amount of one liquid crystal can be made uniform to a predetermined amount.

In this embodiment, as shown in FIG. 2, 16 columns of liquid crystal discharge portions of 1A to 1D, 2A to 2D, 3A to 3D, and 4A to 4D are provided in the longitudinal direction of the gantry 110. The interval between the columns and the interval between the liquid crystal ejection portions in each column are adjusted in accordance with a later-described dropping position pattern.

FIG. 3 is a plan view for explaining the movement of the gantry when the liquid crystal is dropped according to the dropping position pattern of this embodiment. In the present embodiment, as shown in FIG. 3, a sealing material 500 for sealing liquid crystal is formed on the substrate 200, and eight

display areas

210, 220, 230, 240, 250, 260, 270, and 280 are formed. In the present embodiment, a color filter is formed on the substrate 200.

All the display areas are surrounded by the sealing material 500. The sealing material 500 is formed of a material that is cured when irradiated with ultraviolet rays, and has adhesiveness until irradiated with ultraviolet rays. As the sealing material 500, an ultraviolet curable acrylic resin was used.

In the longitudinal direction of the substrate 200, a display area 210, a display area 230, a display area 250, and a display area 270 are arranged at predetermined intervals. Further, the display area 220, the display area 240, the display area 260, and the display area 280 are arranged at predetermined intervals in parallel to the short direction of the substrate 200 with respect to the

display areas

210, 230, 250, and 270, respectively. Has been.

Dropping of the liquid crystal in the display area 210 and the display area 220 is performed by the liquid crystal ejection units in the 1A to 1D rows. The dropping of the liquid crystal in the display area 230 and the display area 240 is performed by the liquid crystal ejection units in the 2A to 2D columns. The dropping of the liquid crystal in the display area 250 and the display area 260 is performed by the liquid crystal ejection units in the 3A to 3D columns. The dropping of the liquid crystal in the display area 270 and the display area 280 is performed by the liquid crystal ejection units in the 4A to 4D columns.

Specifically, first, while the gantry 110 is moving in the direction indicated by the arrow 300, the liquid crystal is discharged from each nozzle 120 at a predetermined interval. After 16 rows of liquid crystals are dropped in the short direction of the substrate 200, the gantry 110 moves in the direction indicated by the arrow 310. Next, while the gantry 110 is moving in the direction indicated by the arrow 320, the liquid crystal is discharged from each nozzle 120 at a predetermined interval. As described above, liquid crystal is dropped from the nozzle 120 while the gantry 110 is moved, so that liquid crystal is dropped in eight rows in each display region.

FIG. 4 is a plan view showing a state in which the liquid crystal is dropped on the substrate in the reference example. As shown in FIG. 4, in each display region, eight rows extending in the longitudinal direction of the substrate 200, and 16 liquid crystal droplets 400 are formed in each row. In the present embodiment, the interval between the columns in which the liquid crystal droplets 400 are arranged and the interval between the liquid crystal droplets 400 on each column are made uniform.

Specifically, the liquid crystal is dropped from the nozzles 120 on the 1A row at equal intervals, and the liquid crystal droplets 400 are formed on the

rows

10A and 11A. Liquid crystals are dropped at equal intervals from the nozzles 120 on the 1B row, and liquid crystal droplets 400 are formed on the

rows

10B and 11B. Liquid crystals are dropped from the nozzles 120 on the 1C row at equal intervals, and liquid crystal droplets 400 are formed on the

rows

10C and 11C. Liquid crystals are dropped at equal intervals from the nozzles 120 on the 1D rows, and liquid crystal droplets 400 are formed on the

rows

10D and 11D.

The liquid crystal is dropped from the nozzles 120 on the 2A row at equal intervals, and the liquid crystal droplets 400 are formed on the

rows

20A and 21A. Liquid crystals are dropped from the nozzles 120 on the 2B rows at equal intervals, and liquid crystal droplets 400 are formed on the rows 20B and 21B. Liquid crystals are dropped at equal intervals from the nozzles 120 on the 2C row, and liquid crystal droplets 400 are formed on the rows 20C and 21C. Liquid crystals are dropped from the nozzles 120 on the 2D rows at equal intervals, and liquid crystal droplets 400 are formed on the

rows

20D and 21D.

The liquid crystal is dropped from the nozzles 120 on the 3A row at equal intervals, and the liquid crystal droplets 400 are formed on the

rows

30A and 31A. Liquid crystals are dropped from the nozzles 120 on the 3B rows at equal intervals, and liquid crystal droplets 400 are formed on the

rows

30B and 31B. Liquid crystals are dropped from nozzles 120 on the 3C row at equal intervals, and liquid crystal droplets 400 are formed on the

rows

30C and 31C. Liquid crystals are dropped from the nozzles 120 on the 3D rows at equal intervals, and liquid crystal droplets 400 are formed on the rows 30D and 31D.

The liquid crystal is dropped from the nozzles 120 on the 4A row at equal intervals, and the liquid crystal droplets 400 are formed on the

rows

40A and 41A. Liquid crystals are dropped at equal intervals from the nozzles 120 on the 4B row, and liquid crystal droplets 400 are formed on the

rows

40B and 41B. Liquid crystals are dropped from nozzles 120 on the 4C row at equal intervals, and liquid crystal droplets 400 are formed on the

rows

40C and 41C. Liquid crystals are dropped from the nozzles 120 on the 4D rows at equal intervals, and liquid crystal droplets 400 are formed on the

rows

40D and 41D.

As described above, in the display area on the substrate 200 surrounded by the sealing material 500, from a plurality of points positioned at predetermined intervals between one end and the other end of each of a plurality of parallel line segments. The liquid crystal is dropped on the constituted dropping position pattern. Here, the plurality of line segments correspond to the respective columns, and the plurality of points correspond to positions where the liquid crystal droplets 400 are formed.

FIG. 5 is an enlarged plan view showing the display area 210 in the reference example. As shown in FIG. 5, in the display area 210, a drop position pattern is composed of a plurality of position points of the liquid crystal drops 400 formed at predetermined intervals on the rows 10A to 11D.

The distance between the outer edge of the dropping position pattern and the sealing material 500 is maintained at a predetermined distance. Specifically, the distance L ₁ between the outer edge of the dropping position pattern and the sealing material 500 is kept constant in the longitudinal direction of the substrate 200. In the lateral direction of the substrate 200, the distance L ₂ between the outer edge and the sealing material 500 of the dropping position pattern is kept constant.

In this manner, after the liquid crystal droplet 400 is formed, the sealing material 500 chemically reacts with the liquid crystal droplet 400 until the sealing material 500 is cured by bonding the substrate 200 and the counter substrate. It can suppress that hardening becomes inadequate.

Specifically, when the liquid crystal is dropped in the vicinity of the sealing material 500 and the liquid crystal droplet 400 and the sealing material 500 come into contact immediately after the dropping, the sealing material 500 is liquid crystal after about 20 minutes from the point of contact. And start a chemical reaction. The sealing material 500 that has caused a chemical reaction is not preferable because it hardly causes a curing reaction even when irradiated with ultraviolet rays.

Therefore, the liquid crystal droplet 400 is preferably dropped at a position where it does not come into contact with the sealing material 500 until the substrate 200 and the counter substrate are bonded together. By doing so, before the liquid crystal and the sealing material 500 cause a chemical reaction, the sealing material 500 can be cured by being irradiated with ultraviolet rays. Further, as described in the prior art, in order to make the gap between the substrates uniform, it is preferable to drop the liquid crystal at a predetermined distance from the sealing material 500.

FIG. 6 is a plan view showing a state in which the substrate and the counter substrate are bonded together in the reference example. As shown in FIG. 6, the substrate 200 onto which the liquid crystal is dropped and the counter substrate 290 are bonded together in a vacuum. In the present embodiment, a TFT (thin film transistor) is formed on the counter substrate 290.

When the substrate 200 and the counter substrate 290 are bonded to each other, the liquid crystal droplet 400 is crushed into a liquid crystal film 410. When the amount of liquid crystal to be sealed is large, display unevenness of the liquid crystal display device occurs. Conversely, when the amount of liquid crystal to be sealed is small, as shown in FIG. 6, the liquid crystal does not reach the corner portion 600 of the display area, and bubbles are generated.

FIG. 7 is a plan view showing a liquid crystal dropping position pattern in a comparative example. As shown in FIG. 7, in the comparative example, in order to spread the liquid crystal on the corner portion 600, the liquid crystal is dropped at the four corners of the display area in addition to the dropping position pattern shown in FIG.

Specifically, the liquid crystal droplets 420 are arranged at a distance of L ₃ from the sealing material 500 in the longitudinal direction of the substrate 200 and at a distance of L ₄ from the sealing material 500 in the short direction of the substrate 200. L ₁ > L ₃ and L ₂ > L ₄ are satisfied. The liquid crystal dropping amount of all the liquid crystal droplets 400 and the liquid crystal droplets 420 is made uniform.

When the liquid crystal droplets are arranged as in the comparative example, the gap between the substrates can be made uniform while suppressing the generation of bubbles by spreading the liquid crystal around the corner portion 600. However, there are the following problems.

FIG. 8 is a diagram for explaining the movement of the gantry 110 for dropping liquid crystal on the dropping position pattern of the comparative example. As shown in FIG. 8, in order to drop the liquid crystal on the dropping position pattern of the comparative example, first, the liquid crystal is dropped by the nozzle 120 on the 1A row to form two liquid crystal drops 420 at the right end of the figure. Is done. At this time, the gantry 110 moves in the direction indicated by the arrow 700, but during this time, the nozzles 120 other than the nozzles 120 on the 1A row do not drop liquid crystal.

Next, the gantry 110 moves in the direction indicated by the arrow 710. Thereafter, while the gantry 110 is moving in the direction indicated by the arrow 720, the liquid crystal is discharged from each nozzle 120 at a predetermined interval. In the display area 210, after the liquid crystal is dropped in four rows extending in the short direction of the substrate 200, the gantry 110 moves in the direction indicated by the arrow 730. Next, while the gantry 110 is moving in the direction indicated by the arrow 740, the liquid crystal is discharged from each nozzle 120 at a predetermined interval. Thereafter, the gantry 110 moves in the direction indicated by the arrow 780. Finally, while the gantry 110 moves in the direction indicated by the arrow 790, the liquid crystal is dropped by the nozzle 120 on the 1D row to form two liquid crystal drops 420 at the left end of the figure. During this time, the nozzles 120 other than the nozzles 120 on the 1D row do not drop the liquid crystal.

As in the above comparative example, in order to spread the liquid crystal in the corner portion 600, when changing the dropping position pattern to add the position point of the liquid crystal droplet 420 to the liquid crystal dropping position pattern of the reference example shown in FIG. The moving path of the gantry 110 for adjusting the discharge position of the nozzle 120 to the liquid crystal dropping position becomes long. Therefore, in the comparative example, the time required for dropping the liquid crystal is increased by about 1 minute as the time for the gantry 110 to move in the direction indicated by the arrow 700 and the direction indicated by the arrow 790. As described above, when the dropping position pattern is irregularly changed for each place in the display region, the time required for dropping the liquid crystal is increased, which is not preferable because the manufacturing tact time of the liquid crystal display device becomes long.

FIG. 9 is a plan view showing a state in which the liquid crystal is dropped on the substrate in the present embodiment. As shown in FIG. 9, in the liquid crystal dropping position pattern according to the present embodiment, the liquid crystal dropping amount at the corners of the dropping position pattern is changed without changing the dropping position pattern of the reference example shown in FIG. More than the amount of liquid crystal dripped at the center of the pattern.

Specifically, when forming the liquid crystal droplets 430 positioned at the corners of the liquid crystal dropping pattern, the syringe 130 was pressurized multiple times by a stepping motor, and the liquid crystal was dropped multiple times. The other liquid crystal droplets 400 positioned at the center of the liquid crystal dropping pattern were formed by pressing the syringe once with a stepping motor and dropping the liquid crystal once.

When the liquid crystal is dropped in this way, the liquid crystal can be spread to the corner of the display area 210 because the liquid amount of the liquid crystal droplet 430 located at the corner of the liquid crystal dropping pattern is large. Further, since the path through which the gantry 110 moves to drop the liquid crystal is not different from the path of the reference example shown in FIG. 3, the time required to drop the liquid crystal hardly increases. Therefore, the manufacturing tact time of the liquid crystal display device can be shortened as compared with the comparative example.

As a result, it is possible to reduce the manufacturing tact time while uniformly sealing the liquid crystal between the substrates to make the gap between the substrates uniform. Accordingly, it is possible to reduce the manufacturing cost of the liquid crystal display device while improving the display quality of the liquid crystal display device.

In the present embodiment, when the liquid crystal is dropped, the amount of liquid crystal dropped is increased by increasing the number of times the liquid crystal is dropped, so that the configuration of the liquid crystal discharge unit can be simplified. For example, there is no need to provide a plurality of syringes with different liquid crystal dropping amounts, and the apparatus cost can be reduced.

As described above, after the liquid crystal is dropped, the substrate 200 and the counter substrate 290 are bonded together, and then the liquid crystal is injected by returning to atmospheric pressure. Thereafter, the sealing material 500 is irradiated with ultraviolet rays, whereby the sealing material 500 is cured and the liquid crystal is sealed. The liquid crystal display device of this embodiment is manufactured through the above steps.

Hereinafter, Embodiment 2 of the manufacturing method of the liquid crystal display device according to the present invention will be described with reference to the drawings.

(Embodiment 2)
FIG. 10 is a plan view showing a state where liquid crystal is dropped on the substrate in the second embodiment of the present invention. As shown in FIG. 10, the drop position pattern of the liquid crystal according to the present embodiment increases the drop amount of liquid crystal as it approaches the corner of the drop position pattern without changing the drop position pattern of the reference example shown in FIG. is doing. Since other configurations are the same as those in the first embodiment, description thereof will not be repeated.

Specifically, when forming the liquid crystal droplets 440 located at the corners of the liquid crystal dropping pattern, the syringe 130 was pressurized three times by the stepping motor, and the liquid crystal was dropped three times. When forming the liquid crystal droplet 450 adjacent to the liquid crystal droplet 440, the syringe 130 was pressurized twice by the stepping motor, and the liquid crystal was dropped twice. The other liquid crystal droplets 400 positioned at the center of the liquid crystal dropping pattern were formed by pressing the syringe once with a stepping motor and dropping the liquid crystal once.

As described above, when the liquid crystal is dropped, the liquid crystal droplets 440 located at the corners of the dropping position pattern and the liquid crystal droplets 450 adjacent thereto are large in volume, so that the liquid crystals can be spread to the corners of the display area 210. . Further, since the path through which the gantry 110 moves to drop the liquid crystal is not different from the path of the reference example shown in FIG. 3, the time required to drop the liquid crystal hardly increases. Therefore, the manufacturing tact time of the liquid crystal display device can be shortened as compared with the comparative example.

This embodiment is used when the liquid crystal cannot be sufficiently distributed to the corners of the display area 210 just by increasing the liquid amount of only the liquid crystal droplets 430 positioned at the corners of the dropping position pattern as in the first embodiment. It is valid. In addition, in the first embodiment, when the liquid amount of the liquid crystal droplets 430 is excessively large, the adjacent liquid crystal droplets 400 and the liquid crystal droplets 430 may be combined to disturb the arrangement of the liquid crystal droplets. In this case, the liquid crystal cannot be sealed with the desired gap between the substrates.

In the present embodiment, by increasing the amount of liquid crystal dripping as it approaches the corner of the dripping position pattern, only specific liquid crystal droplets are enlarged, thereby preventing adjacent liquid crystal droplets from being combined with each other, while maintaining the liquid crystal When sealed, the liquid crystal can be sufficiently spread around the corners of the display area.

In addition, the said embodiment disclosed this time is an illustration in all the points, Comprising: It does not become the basis of a limited interpretation. Therefore, the technical scope of the present invention is not interpreted only by the above-described embodiments, but is defined based on the description of the scope of claims. In addition, meanings equivalent to the claims and all modifications within the scope are included.

100 liquid crystal dropping device, 110 gantry, 120 nozzle, 121 discharge port, 130 syringe, 140 liquid crystal holding tank, 150 valve, 160 tube, 170 liquid crystal, 200 substrate, 210, 220, 230, 240, 250, 260, 270, 280 Display area, 290, counter substrate, 400, 420, 430, 440, 450 liquid crystal droplets, 410 liquid crystal film, 500 sealing material, 600 corners.

Claims

The liquid crystal (170) is dropped on the substrate (200), the liquid crystal dropping surface side of the substrate (200) is opposed to the counter substrate (290), bonded in a vacuum, and then returned to atmospheric pressure to inject liquid crystal. A method of manufacturing a liquid crystal display device, comprising:
Forming a sealing material (500) on the substrate (200) for sealing the liquid crystal (170);
In the display area (210, 220, 230, 240, 250, 260, 270, 280) on the substrate (200) surrounded by the sealing material (500), from one end of each of a plurality of parallel line segments. Dropping the liquid crystal (170) on a dropping position pattern composed of a plurality of points located at predetermined intervals between the other ends; and
Bonding the substrate (200) and the counter substrate (290) in a vacuum;
Curing the sealing material (500),
In the step of dripping the liquid crystal (170), the liquid crystal (170) is changed without changing the predetermined dripping position pattern as a whole of the display area (210, 220, 230, 240, 250, 260, 270, 280). A method of manufacturing a liquid crystal display device, in which the amount of the liquid crystal (170) dropped is larger than the central portion at the corners of the dropping position pattern.
The method for manufacturing a liquid crystal display device according to claim 1, wherein in the step of dropping the liquid crystal (170), the amount of the liquid crystal (170) dropped is increased by increasing the number of drops of the liquid crystal (170).
The method of manufacturing a liquid crystal display device according to claim 1 or 2, wherein in the step of dropping the liquid crystal (170), the amount of the liquid crystal (170) dropped is increased as the corner is approached.