JP2001255518A - Method and apparatus for manufacturing liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for manufacturing a liquid crystal display element which can remove a removal material part easily, and enhance productive efficiency by readily removing the removal material part, before dividing substrates into rectangles while a pair of the substrates is stuck together at removal of the removal material part in the liquid crystal display device, using a plastic plate which consists of a thermoplastic resin. SOLUTION: At the division for each cell, the second substrate 2 is divided completely along a division line 6b and the prescribed thickness of the first substrate 1 is left uncut in order to break off later. At removal of the removal material part 7, the prescribed thickness of only the second substrate 2 is left uncut. After bending the first substrate 1 in a terminal area 5 of the first substrate 1 and separating the terminal area 5 and the removal material part 7 of the first substrate 1, the removal material part 7 is made by a removal head 51 to be folded and removed, and the removal material part 7 is removed completely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a liquid crystal display element and an apparatus for manufacturing a liquid crystal display element, and more particularly, to a method for producing terminals by dividing a liquid crystal display element using a plastic substrate.

[0002]

2. Description of the Related Art In a liquid crystal display element, a pair of substrates on which terminals and electrodes for forming display electrodes are formed are bonded via a sealing material so that the electrodes face each other, and are surrounded by the sealing material. In general, a liquid crystal material is sealed in the region to form a display portion, and a terminal portion is provided outside the sealing material.

In the above terminal portion, an electrode serving as a terminal is formed on one substrate, but no electrode is formed on the other substrate in a region facing the terminal. For this reason,
It is necessary to remove a region of the other substrate facing the terminal. Hereinafter, the portion to be removed is referred to as a removed portion, and the step of removing the removed portion is referred to as a terminal forming step.

In the case of a liquid crystal display device using a substrate made of glass, the removal of the conventional material removal portion in the above-mentioned terminal setting step is performed by first attaching a pair of substrates together with a diamond cutter to the upper substrate. The cutting line is cut by a dicing apparatus such as the above, and a downward pressing force is applied to the dividing line to divide the line.

[0005] As described above, the above substrate is not completely cut with a diamond cutter or the like, but is cut in and cut off. This is because there is a risk that the electrode pattern or the like may be damaged, or the liquid crystal display element may be damaged by the cutting powder.

[0006] Thus, since the removed portion can be removed, when the substrate is made of glass, the terminal setting step is not so difficult.

In a terminal setting step in actual manufacturing of a liquid crystal display element, strips are cut for each liquid crystal display element by bonding a long pair of substrates to be a plurality of liquid crystal display elements. Before removing the strips, the removal section is removed.

On the other hand, a liquid crystal display element may be made of plastic as a substrate.
In the terminal setting step in the case of a plastic substrate made of a thermosetting resin of about mm,
As disclosed in Japanese Unexamined Patent Publication No. 617, the substrate is cut by dicing in the same manner as in the case of the glass substrate, the substrate is left uncut by a predetermined thickness, and the substrate is cut off to remove the removed portion. Can be.

As described above, when a plastic substrate made of a thermosetting resin is used, since the thermosetting resin has a hard and brittle property, it is cut and cut in the same manner as a glass substrate. Thereby, the removed portion can be removed relatively easily.

[0010]

However, in the above-mentioned conventional method for manufacturing a liquid crystal display element and the conventional apparatus for manufacturing a liquid crystal display element, the plastic substrate is made of a thermoplastic resin such as PES (polyether sulfone) or PC (polycarbonate). In this case, the thermoplastic resin such as PES or PC is rich in flexibility as compared with the thermosetting resin and has a high tensile strength. Is difficult.

That is, if the removal portion is forcibly removed, the sealing material bonding the pair of substrates may be separated from the substrates.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to easily remove a material removing portion even in a liquid crystal display element using a plastic substrate made of a thermoplastic resin. And in the event of removal,
An object of the present invention is to provide a method of manufacturing a liquid crystal display element and an apparatus for manufacturing a liquid crystal display element, in which a removed material portion can be easily removed before strips are cut in a state where a pair of substrates are bonded to each other to improve production efficiency. .

[0013]

According to a method of manufacturing a liquid crystal display device of the present invention, in order to solve the above-mentioned problems, a first substrate on which a terminal and an electrode serving as a display electrode are formed, and an electrode serving as a display electrode are provided. The formed second substrate is bonded with a sealing material such that the electrodes face each other, and a liquid crystal material is sealed in a region surrounded by the sealing material to form a display portion. While providing a terminal portion in which the terminals are collected, a dicing device is used to remove the second substrate facing the terminal portion as a material removal portion to perform terminal extraction, and a cell including a terminal portion and a display portion is separated for each cell. In the method for manufacturing a liquid crystal display element, the second substrate is completely divided when the cell is divided, and the first substrate is left to be cut off by a predetermined thickness so as to be cut off later. 2nd group While leaving outright predetermined thickness only, bending the first substrate at the terminal portion of the first substrate, the first
After the terminal portion of the substrate is separated from the material removing portion, the material removing portion is caused by the material removing portion removing member, and the material removing portion is completely removed.

In the present invention, when the first substrate and the second substrate include a plurality of cells, the first substrate and the second substrate are divided into cells. This includes both cutting to a predetermined size.

According to the above invention, the liquid crystal display element comprises a first substrate on which terminals and electrodes serving as display electrodes are formed, and a second substrate on which electrodes serving as display electrodes are formed. Laminated with a sealing material so as to face each other,
A liquid crystal material is sealed in a region surrounded by the sealing material to form a display portion, and a terminal portion in which the terminals are collected is provided outside the sealing material, while a second substrate facing the terminal portion is provided by a dicing device. Is removed as a material removal portion to perform terminal connection, and the cell including the terminal portion and the display portion is divided for each cell to manufacture.

When the first substrate and the second substrate are made of plastic and the plastic is made of a thermoplastic resin, the thermoplastic resin is more flexible than the thermosetting resin. In addition, since the tensile strength is high, there is a problem that it is difficult to remove the removed portion by the method of cutting when removing the removed portion.

Therefore, according to the present invention, the second substrate is completely divided when the cell is divided, and the first substrate is left with a predetermined thickness so as to be cut off later. When removing the removed portion, only the second substrate is left uncut by a predetermined thickness. Then, in this state, the first substrate is bent at the terminal portion of the first substrate. As a result, the terminal portion and the removed portion of the first substrate are separated from each other. Thereafter, the removed portion is caused by the removed portion removing member to be cut off, and the removed portion is completely removed.

As a result, when removing the material removing portion, the material removing portion is caused to be broken off, while when the material removing portion is caused by the material removing portion removing member, the first substrate is bent at the terminal portion. The terminal portion of one substrate and the removal portion are separated from each other, and the removal portion removal member is easily engaged with the removal portion.

Therefore, even in a liquid crystal display element using a plastic substrate made of a thermoplastic resin, the removal portion can be easily removed, and at the time of removal, a pair of substrates are bonded together. In addition, it is possible to provide a method of manufacturing a liquid crystal display element that can easily remove a material removing portion before cutting into strips and improve production efficiency.

In order to solve the above-mentioned problems, the method for manufacturing a liquid crystal display element according to the present invention is characterized in that, in the method for manufacturing a liquid crystal display element described above, the bending angle θ when bending the terminal portion of the first substrate is 10 ° to 10 °. It is characterized by an angle of 40 °.

According to the above invention, the bending angle θ when bending the terminal portion of the first substrate is 10 ° to 40 °.

That is, according to an experiment, the bending angle θ = 5 °
It has been found that it is difficult to insert a removing portion removing member between the first substrate and the removing portion to cause the removing portion. Also, it was found that when the bending angle θ ≧ 45 °, cracks occurred in the electrodes, and disconnection defects occurred.

Therefore, the bending angle θ is 10 ° to 40 °.
Is preferred in terms of workability and product quality.

In order to solve the above-mentioned problems, the method for manufacturing a liquid crystal display element according to the present invention is characterized in that, in the method for manufacturing a liquid crystal display element described above, when the material removal part is caused by the material removal part removing member, the material is removed. The first and second substrates forming the display section are fixed by a fixing means so as to prevent the first substrate and the second substrate from being separated from each other.

In other words, when the removed portion of the second substrate, which has been cut off by a predetermined thickness, is raised by the removed portion removing member, and the removed portion cannot be easily broken, if the removed portion cannot be easily broken, The sealing material may peel off from the first substrate or the second substrate, or a cell thickness defect may occur.

However, according to the present invention, when the material removing portion is caused by the material removing portion removing member and is cut off, the first substrate and the second substrate forming the display portion are separated from each other by the fixing means. It is fixed to prevent it.

[0027] For this reason, since the first substrate and the second substrate forming the display section are not separated from each other by fixing the fixing means, the sealing material may be peeled off from the first substrate or the second substrate.
It is possible to prevent a cell thickness defect from occurring.
Therefore, it is possible to prevent the display quality of the liquid crystal display element from deteriorating.

In order to solve the above-mentioned problems, a manufacturing apparatus for a liquid crystal display element according to the present invention comprises a first substrate on which terminals and electrodes serving as display electrodes are formed, and a second substrate on which electrodes serving as display electrodes are formed. Are bonded together via a sealing material such that the electrodes face each other, and a liquid crystal material is sealed in a region surrounded by the sealing material to form a display portion, and the terminals are collected outside the sealing material. A liquid crystal display element that separates a cell including a terminal portion and a display portion into individual cells by removing the second substrate facing the terminal portion as a material removing portion with a dicing device while providing the portion; In the manufacturing apparatus of (1), a supporting table whose end is bent downward, conveying means for adsorbing and fixing the first substrate and conveying the first substrate and the second substrate along the supporting table, the first substrate and the second When transferring substrates And a gap holding and fixing means for holding and fixing the gap between the first substrate and the second substrate in the region of the sealing material and the display portion, while the dicing apparatus completely separates the second substrate when dividing the cells. The first substrate is cut off, and the first substrate is cut off by a predetermined thickness so as to be cut off later. When removing the removed portion, only the second substrate is cut off by a predetermined thickness, while the terminal portion of the first substrate is supported by the support. When the terminal portion of the first substrate is separated from the material removing portion by being bent along the table, a material removing portion removing member that causes the material removing portion to bend and bend is provided.

According to the invention described above, the apparatus for manufacturing a liquid crystal display element includes a support base whose end is bent downward, a first substrate and a second substrate along the support base by suction-fixing the first substrate. Transport means for transporting the image.

For this reason, the first substrate and the second substrate are transported along the support table while the first substrate is attracted and fixed by the transport means.

Then, the dicing apparatus completely separates the second substrate at the time of cutting for each cell, leaves the first substrate with a predetermined thickness to be cut off later, and removes the second substrate at the time of removing the removed material portion. Only a predetermined thickness of the substrate is left uncut.

Next, when the first substrate and the second substrate are further transported along the support while the first substrate is fixed by suction, the support is bent downward at its end.
The first substrate moves downward along the support. On the other hand, the second
The removed portion of the substrate tries to continue horizontal movement. Therefore, the distance between the first substrate and the material removal portion of the second substrate is increased.

When the terminal portion of the first substrate is bent along the support base and the terminal portion of the first substrate is separated from the material removing portion, the material removing portion removing member removes the material removing portion. Raise and break.

Further, when the removed material removing member raises the removed material portion and transports the first substrate and the second substrate during the transport, the gap holding and fixing means uses the first material in the area of the seal material and the display portion. The distance between the substrate and the second substrate is held and fixed.

For this reason, when the removing portion removing member raises and removes the removing portion, the first substrate and the second substrate forming the display portion are not separated from each other. It is possible to prevent peeling from the two substrates and occurrence of a cell thickness defect.

Therefore, even in a liquid crystal display element using a plastic substrate made of a thermoplastic resin, the removal portion can be easily removed, and at the time of removal, a pair of substrates are bonded together. In addition, it is possible to provide an apparatus for manufacturing a liquid crystal display element that can easily remove a material removing section before cutting into strips and improve production efficiency.

[0037]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

First, in the manufacturing method of the liquid crystal display element of the present embodiment, the dividing operation of the cell division and the dividing operation of the terminal in the terminal setting step will be described.

First, as shown in FIG. 2, each of the liquid crystal display elements 10 has a thickness of, for example, about 0.2 to 0.5 mm.
A first substrate 1 and a second substrate 2, which are plastic substrates made of a thermoplastic resin such as S (polyethersulfone) or PC (polycarbonate), are bonded to each other via sealing materials 3.3.

The liquid crystal display element 10 has a display surface 4 as a display portion on the upper surface, and a terminal region 5 as a terminal portion on the surface of the first substrate 1 outside the sealing material 3. ing. The liquid crystal display element 10 has a display electrode, an alignment film, and the like (not shown).

In this embodiment, a case where a plurality of liquid crystal display elements 10 are manufactured from a pair of the first substrate 1 and the second substrate 2 will be described. The present invention can also be applied when manufacturing one liquid crystal display element 10 from.

As described above, in order to expose terminals to expose the terminal region 5 to the liquid crystal display element 10 composed of the first substrate 1 and the second substrate 2 and the like bonded via the sealing materials 3.3. The second substrate 2 facing the terminal region 5
Cut off the part.

As shown in FIGS. 3 (a) and 3 (b), the terminal setting step for cutting out the portion of the second substrate 2 includes a high-precision rotating high-speed dicing device 6 on the upper second substrate 2. Cutting line 6 with a blade such as a diamond cutter
Insert a. In the method of cutting the dividing line 6a, as shown in FIG. 3A, the second substrate 2 is not completely cut off while leaving a predetermined thickness for the second substrate 2. It should be noted that forming a cut line in a groove shape on the substrate in this manner is referred to as “half cut”.

The half-cut can prevent the electrode pattern in the terminal region 5 from being damaged.

On the other hand, at the same time, a dividing line 6b is formed on the end side of the terminal region 5 for cell formation.
When the dividing line 6b is formed, the second substrate 2 is completely divided by the dicing method, and the first substrate 1 is also half-cut at that position.

Thereafter, as shown in FIG. 4, the material removing portion 7 between the dividing line 6b and the dividing line 6a on the second substrate 2 is cut off to remove the material removing portion 7, thereby exposing the terminal region 5. Let it. At this time, the portion where the dividing line 6a is inserted is easily broken in a glass substrate or a plastic substrate made of a thermosetting resin, so that the removing portion 7 can be easily cut off. Then, the remaining portion 8 of the half cut is formed on the second substrate 2 at the mark where the material removing portion 7 has been cut off.

The above is the outline of the dividing operation in the terminal setting step.

In the present embodiment, as described above, the use of the second substrate 2 made of a thermoplastic resin such as PES or PC is considered as the substrate. In this case, the thermoplastic resin such as PES or PC is rich in flexibility as compared with the thermosetting resin, and has a high tensile strength, so that it is not easy to cut off the removed portion 7.

Therefore, in the present embodiment, the removal portion 7 is removed in the terminal setting step by the following method.

That is, the material removing section 7 in the present embodiment.
In the removal, as shown in FIG. 5, the half-cut liquid crystal display element 10 is suction-fixed to a suction stage 30 as a transport means provided on a fixed stage 20 as a support.

The suction stage 30 is shown in FIG.
As shown in (b), for example, a large number of suction holes 31 ...
The first substrate 1 of the liquid crystal display element 10 can be fixed by suction by drawing a vacuum through the suction holes 31... Further, as shown in FIG. 6 (b), the suction stage 30 is provided with drive rails 32 on both sides.
Can be moved along the fixed stage 20 while the liquid crystal display element 10 is fixed by suction.

Therefore, when the suction stage 30 moves along the upper surface of the fixed stage 20, the liquid crystal display element 10 also moves as shown in FIG.
While moving along the upper surface of the fixed stage 20.

Here, as shown in FIG. 5, the fixed stage 20 has one end formed in a trapezoidal shape, and a ridge line connecting the upper side of the trapezoid to the oblique side has a rounded portion 21 having an arc-shaped cross section. Has become.

Therefore, as shown in FIG. 7, the liquid crystal display element 10 first moves horizontally in the direction of arrow A due to the transport of the suction stage 30, but the liquid crystal display element 10 reaches the round portion 21 of the fixed stage 20. Then, since the first substrate 1 is maintained in a state of being suction-fixed to the suction stage 30, the first substrate 1 is also bent by the round portion 21 and moves along the oblique side.

In the present embodiment, as shown in FIG. 5, the liquid crystal display element 10 is arranged such that the dividing line 6b is ahead of the dividing line 6a with respect to the direction of the arrow A which is the moving direction of the suction stage 30. Is arranged. Therefore, as shown in FIG.
When the first substrate 1 is reached, the first substrate 1 moves along the oblique side while being fixed to the suction stage 30 by suction.
The removing portion 7 of the second substrate 2 attempts to continue the horizontal movement in the direction of arrow A as it is.

At this time, in the present embodiment, as shown in FIG. 7, an L-shaped claw as a removing portion removing means is provided at the front end side of the removing portion 7 of the second substrate 2 in the traveling direction. Is provided.

Accordingly, as shown in FIG. 1, when the liquid crystal display element 10 moves in the direction of arrow A and the dividing line 6a comes to the rounded portion 21 of the fixed stage 20, the tip of the material removing portion 7 is 51, the removal head 5
1 and slides on the wall. As a result, a force is applied upward in the direction of arrow A, which is the direction in which the suction stage 30 moves, and the tip of the removing section 7 is lifted slightly upward, and the removing section 7 further moves in the arrow A direction. As a result, the material removing section 7 is cut off at the cutting line 6a.

When the removal head 51 is hooked on the material removing portion 7, since the material removing portion 7 is separated from the terminal region 5, the removing head 51 is placed between the material removing portion 7 and the terminal region 5. The removal member 7 can be easily inserted and easily hooked.

As described above, in the terminal setting step of the present embodiment, one second substrate 2 of the liquid crystal display element 10 including the first substrate 1 and the second substrate 2 is completely separated. ,
The first substrate 1, which has not been completely divided, is bent toward the back side.
As a result, as shown in FIG. 1, the removal portion 7 is caused to occur, and the removal portion 51 can be completely removed by the removal head 51 as the liquid crystal display element 10 moves. The half-cut portion of the first substrate 1 by the dividing line 6b is cut off in a later step.

As a result, the liquid crystal display element 1 of the present embodiment
According to the manufacturing method No. 0, a liquid crystal display element using the first substrate 1 and the second substrate 2 made of a thermoplastic resin, particularly a thermoplastic resin having a thickness of about 0.2 to 0.5 mm, which was conventionally difficult. 10 can be performed efficiently.

The removal head 51 of the present embodiment is
It is formed and fixed with an L-shaped claw, and the removing portion 7 is bent upward by the movement of the removing portion 7 in the direction of arrow A and the contact with the removing portion 7. It is supposed to be. Therefore, in order to facilitate the upward movement of the removing member 7, it is preferable that the removing head 51 is provided to be inclined. Further, it is also possible to provide the removal head 51 so as to be movable up and down and to lift up the removal material part 7.

Further, as the shape of the removing head 51, L
As shown in FIG. 8, the removing head 5 is not formed to have a U-shaped claw but is formed by an arc-shaped claw to be hooked.
2 is fine. In the case of the removal head 52 having the arc-shaped claws, the removal portion 7 is naturally raised upward, so that removal of the removal portion 7 is further smoothed.

The material of the removing heads 51 and 52 is as follows.
Any material that is stronger than the present plastic material, such as iron, stainless steel, and hard resin, may be used. In addition, removal heads 51.5
It is desired to cover the portion of the terminal 2 in contact with the terminal region 5 with a soft material that does not damage the terminal region 5, such as rubber or resin.

Here, as described above, the fixed stage 20 of the present embodiment has the rounded portion 21 and is bent downward, but the bending angle θ between the horizontal plane and the inclined surface of the fixed stage 20 is formed. Is important because it affects the workability of the removal head 51 and the quality of the liquid crystal display element 10.

Therefore, as shown in the examples described later, it was confirmed by experiments. In the experiment, the bending angle θ = 5 ° -60
The situation was checked at 5 ° intervals in the range of °. As a result, it was found that when the bending angle θ was 5 °, the removing head 51 could not be inserted between the terminal region 5 and the removing portion 7, so that the removing head could not be hooked on the removing portion 7. On the other hand, when the bending angle θ ≧ 45 °, the transparent electrode (ITO (Indium Tin
Oxide: Indium tin oxide))
It was found that disconnection failure occurred.

As a result, the bending angle θ between the horizontal plane and the inclined surface of the fixed stage 20 having the rounded portion 21 is θ
= 10 ° to 40 ° has been found to be preferable.

On the other hand, in the present embodiment, the first substrate 1 and the material removing portion 7 are separated from each other by the round portion 21 and the material removing portion 7 is caused by the removing head 51, so that the first substrate 1 in the liquid crystal display element 10 is formed. There is a possibility that the sealing material 3 between the substrate and the second substrate 2 may be peeled off.

In order to prevent this, in the present embodiment, as shown in FIG. 5, the liquid crystal display element 10 is placed above the liquid crystal display element 10 during the horizontal movement period. And fixing rods 40 as fixing means for fixing the distance. Therefore, the liquid crystal display element 10 is moved in the direction of arrow A together with the suction stage 30 while being pressed and fixed to the fixing rod 40.

Here, when pressing the liquid crystal display element 10, the fixing rod 40 presses above the portion where the sealing material 3 is formed, thereby fixing the liquid crystal display element 10 without pressing the display surface 4. It is arranged to be.

That is, when the display surface 4 shown in FIG. 2 is pressed, a defective cell thickness or poor alignment may be caused and display quality may be impaired, but this is not the case in the present embodiment.

Due to the presence of the fixing rod 40, the material removing portion 7
During the removal of the first substrate 1 and the second substrate 2
From the liquid crystal display element 10 and a failure in removing the removing portion 7 due to a positional shift of the liquid crystal display element 10 can be prevented.

Although the fixing rod 40 of the present embodiment presses the liquid crystal display element 10, the distance between the first substrate 1 and the second substrate 2 is constant even if it is not necessarily pressed. What is necessary is just to hold and fix it.

As described above, according to the method of manufacturing the liquid crystal display element 10 of the present embodiment, the liquid crystal display element 10 includes the first substrate 1 on which the terminals and the electrodes serving as the display electrodes are formed, and the electrodes serving as the display electrodes. The formed second substrate 2 is bonded via a sealing material 3 so that the electrodes face each other, and a liquid crystal material is sealed in a region surrounded by the sealing material 3 to form a display portion. Is provided with a terminal area 5 in which the above terminals are collected.
The terminal is formed by removing the second substrate 2 facing the substrate as the material removing portion 7, and the cell including the terminal portion and the display portion is divided for each cell.

When the first substrate and the second substrate 2 are made of plastic and the plastic is made of a thermoplastic resin, the thermoplastic resin is more flexible than the thermosetting resin. There is a problem that it is difficult to remove the removed portion 7 by a method of removing the removed portion 7 when removing the removed portion 7 because it is rich and has a high tensile strength.

Therefore, in the present embodiment, the second substrate 2 is completely divided at the time of division for each cell, and the first substrate 1 is left with a predetermined thickness for later folding. Also, when removing the material removing portion 7, only the second substrate 2 is left uncut by a predetermined thickness. Then, in this state, the first substrate 1 is bent at the terminal region 5 of the first substrate 1. Thereby, the first
Since the terminal region 5 of the substrate 1 is separated from the material removing portion 7,
After that, the removal portion 7 is raised by the removal head 51 and cut off, and the removal portion 7 is completely removed.

As a result, when removing the material removing portion 7, the material removing portion 7 is caused to be broken off, and when the material removing portion 7 is caused by the removing head 51, the first substrate 1 is moved to the terminal region 5.
, The terminal region 5 of the first substrate 1 is separated from the material removing portion 7, and the removal head 51 is easily engaged with the material removing portion 7.

Therefore, even in the liquid crystal display element 10 using a plastic substrate made of a thermoplastic resin, the removal portion 7 can be easily removed, and at the time of removal, the pair of first substrates 1 and It is possible to provide a method of manufacturing a liquid crystal display element in which the removal member 7 can be easily removed before the strip is cut in a state where the second substrate 2 is bonded, thereby improving production efficiency.

In the method of manufacturing liquid crystal display element 10 of the present embodiment, bending angle θ when bending terminal region 5 of first substrate 1 is 10 ° to 40 °.

That is, according to the experiment, the bending angle θ = 5 °
It has been found that it is difficult to insert the removing head 51 between the first substrate 1 and the removing portion 7 to cause the removing portion 7. Also, it was found that when the bending angle θ ≧ 45 °, cracks occurred in the electrodes, and disconnection defects occurred.

Therefore, the bending angle θ is 10 ° to 40 °.
Is preferred in terms of workability and product quality.

When the removed portion 7 of the second substrate 2 which has been cut off by a predetermined thickness is raised by the removing head 51 and cut off, if the removed portion 7 cannot be easily broken off, during the cutting operation, In addition, the sealing material 3 may be peeled off from the first substrate 1 or the second substrate 2, or a cell thickness defect may occur.

However, the liquid crystal display element 10 of the present embodiment
According to the manufacturing method described above, when the material removing section 7 is raised by the removing head 51 and cut off, the fixing bar 40 is used to fix the display surface 4.
Are fixed so as to prevent the first substrate 1 and the second substrate 2 forming the substrate from being separated from each other.

Since the first substrate 1 and the second substrate 2 forming the display surface 4 are not separated from each other by fixing the fixing rod 40, the sealing material 3 is separated from the first substrate 1 and the second substrate 2. Or a cell thickness defect can be prevented from occurring. Therefore, it is possible to prevent the display quality of the liquid crystal display element 10 from deteriorating.

Further, in the manufacturing apparatus of the liquid crystal display element 10 according to the present embodiment, the fixed stage 20 which has a rounded portion 21 and is bent downward and the fixed substrate 20 which sucks and fixes the first substrate 1 is provided. And a suction stage 30 for transporting the first substrate 1 and the second substrate 2 along.

For this reason, the first substrate 1 and the second substrate 2
The first substrate 1 is fixed by suction on the suction stage 30, and is transported horizontally along the fixed stage 20 in this state.

Then, the dicing apparatus 6 completely divides the second substrate 2 at the dividing line 6b when dividing the cells, and leaves the first substrate 1 by a predetermined thickness to be cut off later. Further, the dicing device 6 leaves only the second substrate 2 by a predetermined thickness at the dividing line 6a when removing the material removing portion 7.

Next, when the first substrate 1 and the second substrate 2 are further conveyed along the fixed stage 20 in a state where the first substrate 1 is suction-fixed, the fixed stage 20 has the rounded portion 21 at the end. The first substrate 1
Moves downward along the fixed stage 20. On the other hand, the removing portion 7 of the second substrate 2 attempts to continue the horizontal movement. Therefore, the distance between the first substrate 1 and the material removal portion 7 of the second substrate 2 is increased.

When the terminal region 5 of the first substrate 1 is bent along the rounded portion 21 of the fixed stage 20 and the terminal region 5 of the first substrate 1 is separated from the material removing portion 7, the removal is performed. The head 51 raises and removes the material removing section 7.

Further, when the removing head 51 raises and removes the material removing portion 7 during the transfer of the first substrate 1 and the second substrate 2, the fixing rod 40 is moved to the area of the sealing material 3 and the display surface 4. The distance between the first substrate 1 and the second substrate 2 is held and fixed.

Therefore, when the removing head 51 raises and removes the material removing portion 7, the first substrate 1 and the second substrate 2 forming the display surface 4 do not separate from each other.
Can be prevented from peeling off from the first substrate 1 or the second substrate 2 or causing a cell thickness defect.

Therefore, even in the liquid crystal display element 10 using a plastic substrate made of a thermoplastic resin, the removal portion 7 can be easily removed, and at the time of removal, the pair of first substrates 1 and In the state where the second substrate 2 is bonded, it is possible to provide a manufacturing apparatus of the liquid crystal display element 10 which can easily remove the removing portion 7 before cutting into strips and improve the production efficiency.

In this embodiment, the pair of the first substrate 1 and the second substrate 2 are moved while being bonded to each other, and the material removing section 7 is removed before the strip is cut.

Thus, the production efficiency can be improved.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, in the above embodiment, the first substrate 1 and the second substrate 2 are made of a thermoplastic resin as a plastic substrate. However, the present invention is not limited to this, and the first substrate 1 and the second substrate 2 may be made of a plastic substrate. And the same effect can be expected.

Further, in the present embodiment, the separating operation in the terminal setting step and the removing operation of the removing portion 7 in the terminal setting step have been described separately. In a state where the fixed stage 20, the suction stage 30, and the fixed bar 40 used for the removing operation are provided, it is possible to perform the dividing operation of the terminal setting step while moving. That is, both the dividing operation and the removing operation of the removing section 7 can be performed while being transported by the suction stage 30.

Thus, the production efficiency can be further improved.

[0097]

EXAMPLE In this example, an experiment was conducted to determine how much the bending angle θ between the horizontal plane and the inclined surface of the fixed stage 20 by forming the rounded portion 21 was good.

In the experiment, the effect was obtained by forming the rounded portion 21 at intervals of 5 ° in the range of the bending angle θ = 5 ° to 60 °.
Table 1 shows the results.

Table 1 shows that when the bending angle θ = 5 °, the removing head cannot be inserted between the terminal portion and the removing portion 7, so that the removing head cannot be hooked on the removing portion 7. Further, it was found that when the bending angle θ ≧ 45 °, cracks occurred in the transparent electrode (ITO (Indium Tin Oxide: indium tin oxide)) and disconnection failure occurred.

As a result, it was found that the bending angle θ between the horizontal plane and the inclined surface of the fixed stage 20 at the rounded portion 21 is preferably set to the bending angle θ = 10 ° to 40 °.

[0101]

[Table 1]

[0102]

As described above, in the method of manufacturing a liquid crystal display element according to the present invention, the second substrate is completely divided when the cell is divided, and the first substrate is left uncut by a predetermined thickness for later folding. At the time of removing the removed portion, only the second substrate is cut off by a predetermined thickness, while the first substrate is bent at the terminal portion of the first substrate, and the terminal portion of the first substrate and the removed portion are removed. Then, after removing the material, the material removing portion is caused by the material removing portion removing member to break it off, thereby completely removing the material removing portion.

Therefore, in removing the removed portion, the removed portion is raised by causing the removed portion, and when the removed portion is caused by the removed portion removing member, the first substrate is bent by the terminal portion. The terminal portion of one substrate and the removal portion are separated from each other, and the removal portion removal member is easily engaged with the removal portion.

Therefore, even in a liquid crystal display element using a plastic substrate made of a thermoplastic resin, it is possible to easily remove the removed material portion, and to remove the removed material in a state where a pair of substrates are bonded together. In addition, it is possible to provide a method of manufacturing a liquid crystal display element that can easily remove a material removing portion before cutting into strips and improve production efficiency.

As described above, according to the method for manufacturing a liquid crystal display element of the present invention, in the method for manufacturing a liquid crystal display element described above, the bending angle θ when bending the terminal portion of the first substrate is 10 °.
４０40 °.

That is, according to the experiment, the bending angle θ = 5 °
It has been found that it is difficult to insert a removing portion removing member between the first substrate and the removing portion to cause the removing portion. Also, it was found that when the bending angle θ ≧ 45 °, cracks occurred in the electrodes, and disconnection failure occurred.

Therefore, the bending angle θ is preferably 10 ° to 40 ° from the viewpoint of workability and product quality.

As described above, according to the method of manufacturing a liquid crystal display element of the present invention, in the method of manufacturing a liquid crystal display element described above, when the material removal part is caused by the material removal part removing member, the fixing means is used. In this method, the first substrate and the second substrate which form the display section are fixed so as to prevent separation.

Therefore, the first and second substrates forming the display section are not separated from each other by the fixing of the fixing means, so that the sealing material is peeled off from the first and second substrates.
It is possible to prevent a cell thickness defect from occurring.
Therefore, there is an effect that deterioration of the display quality of the liquid crystal display element can be prevented.

As described above, the apparatus for manufacturing a liquid crystal display element according to the present invention comprises a support base having an end bent downward, a first substrate sucked and fixed to the first substrate and a second substrate along the support base. Transport means for transporting the first substrate and the second substrate, and interval holding and fixing means for holding and fixing the interval between the first substrate and the second substrate in the area of the sealing material and the display portion when the first substrate and the second substrate are transported. The dicing apparatus completely divides the second substrate when cutting each cell, leaves the first substrate by a predetermined thickness to be cut off later, and only removes the second substrate by a predetermined amount when removing the material removal portion. When the terminal portion of the first substrate is bent along the support base and the terminal portion of the first substrate is separated from the material removing portion,
There is provided a removing part removing member which causes the removing part to be bent.

Therefore, the first substrate and the second substrate are suction-fixed by the transfer means, and are transferred along the support in that state.

Then, the dicing apparatus completely separates the second substrate at the time of cutting for each cell, leaves the first substrate by a predetermined thickness so as to be cut off later, and removes the second substrate at the time of removing the material removing portion. Only a predetermined thickness of the substrate is left uncut.

Next, when the first substrate and the second substrate are further transported along the support while the first substrate is fixed by suction, the end of the support is bent downward.
The first substrate moves downward along the support. On the other hand, the second
The removed portion of the substrate tries to continue horizontal movement. Therefore, the distance between the first substrate and the material removal portion of the second substrate is increased.

When the terminal portion of the first substrate is bent along the support table and the terminal portion of the first substrate is separated from the material removing portion, the material removing portion removes the material removing portion. Raise and break.

Further, when the removal member removing member raises the removal portion and transports the first substrate and the second substrate during the transfer, the gap holding and fixing means uses the seal material and the first portion of the display area. The distance between the substrate and the second substrate is held and fixed.

Therefore, when the removing portion removing member raises and removes the removing portion, the first substrate and the second substrate forming the display portion do not separate from each other. It is possible to prevent peeling from the two substrates and occurrence of a cell thickness defect.

Therefore, even in a liquid crystal display element using a plastic substrate made of a thermoplastic resin, it is possible to easily remove the removed portion, and at the time of removal, to remove the material from the pair of substrates. In addition, it is possible to provide an apparatus for manufacturing a liquid crystal display element which can easily remove a material removing portion before cutting into strips and can improve production efficiency.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of a method and an apparatus for manufacturing a liquid crystal display element according to the present invention, and showing a state in which a removed portion is cut off by a removing head.

FIG. 2 is a sectional view showing a configuration of the liquid crystal display element.

FIGS. 3A and 3B show a dividing line of the liquid crystal display element, wherein FIG. 3A is a sectional view showing one liquid crystal display element, and FIG.
FIG. 3 is a plan view showing a plurality of liquid crystal display elements.

FIG. 4 is a cross-sectional view showing a material removing portion that is cut off in a terminal setting step of the liquid crystal display element.

FIG. 5 is a diagram illustrating a state in which the liquid crystal display element on which the dividing line is formed is suction-fixed to a suction stage that moves on a fixed stage and is conveyed in the work of removing the removed material portion in the terminal-projecting step of the liquid crystal display element. FIG.

FIGS. 6A and 6B show a structure of a suction stage used in a terminal setting step of the liquid crystal display element, wherein FIG. 6A is a cross-sectional view and FIG.

FIG. 7 is a diagram illustrating a removal operation of a removing portion in the terminal extending step of the liquid crystal display element, in which the first substrate 1 moves in the oblique direction along the fixed stage and the removing portion of the second substrate moves horizontally. It is a side view which shows the state which engages with a removal head.

FIG. 8 is a side view showing another removal head in the liquid crystal display element.

[Description of Signs] 1 First substrate 2 Second substrate 3 Sealing material 4 Display surface (Display portion) 5 Terminal area (Terminal portion) 6 Dicing device 6a Dividing line 6b Dividing line 7 Material removing portion 10 Liquid crystal display element 20 Fixed stage (Supporting Table) 21 Rounded Part 30 Suction Stage (Conveying Means) 31 Suction Hole 32 Drive Rail 40 Fixing Bar (Fixing Means, Space Holding and Fixing Means) 51 Removal Head (Removal Material Removal Member) 52 Removal Head (Removal Material Removal) Member) θ Bending angle

Claims (4)

[Claims] 1. A first substrate on which a terminal and an electrode serving as a display electrode are formed and a second substrate on which an electrode serving as a display electrode is formed are bonded via a sealing material so that the electrodes face each other. In addition, a liquid crystal material is sealed in a region surrounded by the sealing material to form a display portion, and a terminal portion in which the terminals are gathered is provided outside the sealing material, while a dicing device is used to face the terminal portion. (2) In a method of manufacturing a liquid crystal display element in which a terminal including a terminal portion and a display portion is divided by each cell by removing a substrate as a material removing portion, the second substrate is completely removed when the cell is divided. Divided, first
The substrate is left uncut by a predetermined thickness to be cut off later,
When removing the removed portion, only the second substrate is cut off by a predetermined thickness, while the first substrate is bent at the terminal portion of the first substrate, and the terminal portion of the first substrate is separated from the removed portion. And removing the removed portion completely by raising the removed portion with a removed portion removing member, and completely removing the removed portion. 2. A bending angle θ when bending a terminal portion of a first substrate.
2. The method according to claim 1, wherein the angle is 10 ° to 40 °. 3. 3. A first means for forming a display portion by a fixing means when the material removing portion is raised by a material removing portion removing member and is cut off.
2. The method according to claim 1, wherein the substrate and the second substrate are fixed so as to prevent separation. 4. A first substrate on which a terminal and an electrode serving as a display electrode are formed, and a second substrate on which an electrode serving as a display electrode is formed are bonded via a sealing material so that the electrodes face each other. In addition, a liquid crystal material is sealed in a region surrounded by the sealing material to form a display portion, and a terminal portion in which the terminals are collected is provided outside the sealing material. (2) A device for manufacturing a liquid crystal display element, in which a terminal is provided by removing a substrate as a material removing portion and a cell including a terminal portion and a display portion is divided for each cell, comprising: a support base having an end bent downward; Transport means for sucking and fixing the substrate and transporting the first substrate and the second substrate along the support, and transporting the first substrate and the second substrate when the first substrate and the second substrate are transported; Distance from second substrate While the dicing apparatus is provided with an interval holding and fixing means for holding and fixing, the second substrate is completely cut when the cell is cut, and the first substrate is cut off by a predetermined thickness so as to be cut off later. When removing the material part,
While only the substrate is left uncut by a predetermined thickness, when the terminal portion of the first substrate is bent along the support base and the terminal portion of the first substrate is separated from the removal portion, the removal portion is removed. An apparatus for manufacturing a liquid crystal display element, comprising a removing member removing member for raising and folding.