JP3724191B2 - Liquid crystal display device manufacturing apparatus and manufacturing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus and a method for manufacturing a liquid crystal display element in which a liquid crystal material is sandwiched between a pair of substrates, at least one of which is flexible.
[0002]
[Prior art]
Conventionally, in the field of electronic displays, liquid crystal display elements have been put to practical use in a wide range of fields, from small information equipment terminals to projection-type large projection displays. In such a liquid crystal display element, generally, a cell is manufactured by bonding two glass substrates each having a gap maintained by a spacer, a liquid crystal material is injected into the gap between the substrates of the cell from an injection port, and the two substrates are again connected. After adjusting the gap by pressing with a flat plate, it is manufactured by sealing the injection port.
[0003]
A vacuum injection method is widely used as a method for injecting a liquid crystal material into a cell. In the vacuum injection method, the internal air is evacuated from a cell provided with an inlet on the end face, and a liquid crystal material that has been evacuated in advance is brought into contact with the inlet to bring the liquid crystal material into the cell by capillary action. After injecting a proper amount, the pressure outside the cell is returned to atmospheric pressure to fill the cell with a liquid crystal material using a pressure difference.
[0004]
[Problems to be solved by the invention]
However, the above-described vacuum injection method has a problem that it takes a long time to exhaust the air in the cell and inject the liquid crystal material, resulting in low productivity. This is particularly noticeable in the case of a cell using a large substrate. In addition, there is a problem that extra liquid crystal material adheres to the cell end face and the loss of the liquid crystal material increases, and the liquid crystal material is contaminated while a plurality of cells are immersed in the liquid crystal material pool many times.
[0005]
In recent years, liquid crystal display elements using a film substrate have attracted attention because they are lightweight, have excellent impact resistance, and can reduce the thickness of the element itself. Since the film substrate has flexibility, when the vacuum injection method is used, both the evacuation of the cell and the injection of the liquid crystal material require a longer time than the glass cell. In particular, this problem is remarkable in a cell manufactured using only a film substrate. For this reason, a method has been proposed in which a cell is produced after a film substrate is once bonded to a substrate such as glass and a liquid crystal material is injected. The removal process is necessary and complicated, and the film substrate may be damaged or deformed. In addition, there are problems such as selecting optimum conditions for attaching to a glass substrate. Thus, when a liquid crystal display element is manufactured by attaching a film substrate to glass, an increase in process and complexity are inevitable, and the larger the substrate, the more difficult it is to manufacture.
[0006]
The present invention was devised to solve the above-described problems, and an object of the present invention is to provide a novel and useful liquid crystal display element manufacturing apparatus that has a simple apparatus configuration, can be manufactured in a short time, and has high productivity. It is to provide. It is another object of the present invention to provide a novel and useful method for manufacturing a liquid crystal display element that has a simple manufacturing process, can be manufactured in a short time, and has high productivity.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a liquid crystal element manufacturing apparatus according to the present invention is a liquid crystal display element manufacturing apparatus in which a liquid crystal material is sandwiched between a pair of substrates, at least one of which is flexible. A flat plate to be placed, a liquid crystal supply port for supplying a liquid crystal material onto the substrate placed on the flat plate, and a first pressure for pressing a flexible counter substrate toward the substrate on the flat plate through the liquid crystal material A second pressure roller, and a support member that supports the flat plate and the first and second pressure rollers in a relatively movable manner, and the flat plate has a heater for raising the temperature of the surface. the second pressure roller, said a pressure heating roller provided on the downstream side of the first roller with respect to the relative movement direction of the plate, the said pair of substrates whose pressure once pressurized by said first roller heating and pressurizing the substrates to each other with flat Is intended to be joined, further, on the flat plate, the positioning member for positioning the pair of substrates are provided, said positioning member, said first, housed in said flat plate by pressing the second pressure roller characterized in that it is characterized in that that.
[0010]
Wherein the flat plate, as a means for fixedly supporting the substrate may be provided with suction holes for vacuum suction of the substrate. By vacuum-sucking the substrate through the suction holes and fixing and supporting the substrate on a flat plate, the entire substrate can be easily kept flat even when a large flexible substrate is used.
[0011]
A rear end support member that supports the rear end of the flexible counter substrate and interlocks with the relative movement between the flat plate and the first and second pressure rollers may be further provided. By providing the rear end support member, it is possible to more effectively prevent bubbles from being mixed when the substrates are bonded together.
[0012]
The rear end support member may be provided with a pair of holding rollers for holding the rear end of the counter substrate. A holding member for holding the rear end of the counter substrate; and a reel for sending a wire connected to the holding member in conjunction with the relative movement of the flat plate and the first and second pressure rollers. It may be.
[0013]
A spring that pressurizes the first and second pressure rollers in the normal direction of the flat plate with a spring pressure may be provided. Further, an adjusting means for adjusting the amount of contraction of the spring may be provided. You may provide the pressurization means which pressurizes the said 1st , 2nd pressurization roller to the normal line direction of the said flat plate with an air pressure.
[0014]
You may arrange | position the said manufacturing apparatus in a vacuum chamber. By superimposing the substrates under reduced pressure, bubbles can be prevented more effectively from being mixed between the substrates, and the display performance and the reliability of the element can be improved.
[0016]
The support member that supports the flat plate and the first and second pressure rollers may be one that fixedly supports the first and second pressure rollers and movably supports the flat plate, A flat plate may be fixedly supported, and the first and second pressure rollers may be movably supported.
[0017]
On the other hand, a method of manufacturing a liquid crystal display device of the present invention is a method of manufacturing a liquid crystal display device formed by sandwiching a liquid crystal material between a pair of substrates is a flexible, pre-adhesive material on at least one of the flexible substrate A first step of disposing, a second step of placing one of the flexible substrates on a flat plate and supplying a liquid crystal material to the surface, and a liquid crystal material from the flexible counter substrate by a pressure member. And pressurizing toward the flexible substrate on the flat plate, moving the flat plate and the pressure member relative to each other, and bonding the counter substrate to the substrate on the flat plate with the adhesive material; And the third step includes a step of pressing the counter substrate toward a substrate on a flat plate by a first pressure member and bonding the substrates together, and the pair of the substrates once bonded by the first pressure member. second pressure the substrates together, and heating the Heated and pressed toward the substrate on a flat plate that heating the opposing substrate by a wood and a step of joining the substrates together, characterized in that.
[0018]
When the substrates are bonded together, the substrates may be bonded while keeping the rear end of the counter substrate away from the substrate on the flat plate.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.
[0020]
<First Embodiment>
FIG. 1 is an exploded perspective view showing an appearance of a liquid crystal display device manufacturing apparatus according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view showing a state in which a pair of substrates are bonded together by the apparatus.
[0021]
As shown in FIG. 1 and FIG. 2, this manufacturing apparatus is configured to press and heat two substrates, a flat plate stage A on which a substrate is placed and moved, a quantitative discharge unit B for quantitatively discharging a liquid crystal material, and the like. And a rear end holding unit D that holds the rear end of the upper film substrate.
[0022]
FIG. 3 is a longitudinal sectional view showing the configuration of the flat plate stage A. The flat plate stage A includes a suction table 1 provided with a plurality of suction holes 1c for vacuum suction for fixing and supporting substrates to be bonded, and a plate-like heater 2 that is closely fixed to the back surface of the suction table 1. And a heat insulating plate 3 made of a baking material or a ceramic material.
[0023]
On the lower surface of the heat insulating plate 3, an LM block 4 that slides on an LM rail 8 provided on the base 100, and a connection block 41 that is driven by a ball screw drive mechanism 5 that uses a servo motor or a speed control motor as a drive source 6, The flat plate stage A can be slid along the LM rail 8.
[0024]
As shown in FIG. 3, the suction table 1 is provided with pins 1a for positioning the substrate. When the flat stage A slides and comes to a position facing the pressure roller 20 and the pressure heating roller 40 provided in the pressure / heating unit C described later, the coil spring 1b provided on the back of the pin 1a. Thus, the pin 1a is lowered by the roller pressure, and the pressure roller 20 and the pressure heating roller 40 are not loaded.
[0025]
Further, as shown in FIG. 3, all the suction holes 1 c communicate with each other in the suction table 1, and are further connected to a vacuum pump 10 through an electromagnetic valve 9. Since the substrate is fixedly supported by air suction from each suction hole 1c, there is no need for a member for pressing the substrate from above, which is advantageous in terms of simplifying the device configuration and preventing contamination. Further, even if it is a film substrate, the substrate does not bulge. If the substrate is fixed by pressing it from the upper side of the flat plate, it will be supported at the periphery of the substrate so as not to hinder the movement of the pressure roller for laminating the substrates, especially for large flexible substrates. It is very difficult to keep the entire substrate flat.
[0026]
Further, a temperature sensor 2b is provided in the vicinity of the suction table 1, and the heater 2 is ON / OFF controlled by a temperature controller 2a connected to the temperature sensor 2b to control the temperature of the suction table 1.
[0027]
A position detector 7 such as a photo sensor or a limit switch is arranged in the vicinity of the LM rail 8 so that the flat plate stage A can stop or change its speed at a predetermined position, and is configured to control the drive source 6. Has been.
[0028]
The fixed discharge unit B accommodates the liquid crystal material therein and discharges the liquid crystal material from the discharge port, the pneumatic pressure source 14 for supplying air into the syringe 11, and the pneumatic pressure source 14 to control the pneumatic pressure source 14. A control device 13 for adjusting the discharge amount of the liquid crystal material, and an XY robot mechanism 15 for stopping and running the fixed discharge control device 13 and the syringe 11 at an arbitrary position above the suction table 1.
[0029]
FIG. 4 is a cross-sectional view showing the configuration of the pressure heating unit C. As shown in FIG. 4, the pressure heating unit C includes two rollers, a pressure roller 20 and a pressure heating roller 40, and when the substrate comes to the opposite part of the roller by the movement of the flat plate stage A. The film substrate is pressed and heated toward the substrate on the flat plate stage A by both rollers.
[0030]
Both ends of the pressure roller 20 are attached to a bearing holder 23 via bearings 22 respectively. A support plate 42 is attached to the base 100, and each bearing holder 23 is connected to an LM block 25 that slides on an LM rail 24 attached to the support plate 42 via a connection block 26. Yes. Accordingly, the pressure roller 20 is supported so as to be slidable in the normal direction of the flat plate stage A.
[0031]
Behind the bearing holder 23 are provided a spring 27 for pressing the bearing holder 23 and an adjusting bolt 28 for adjusting the amount of contraction of the spring 27. The adjustment bolt 28 is screwed into a screw hole 43 provided in the support plate 42 and presses the spring 27 with a stopper 44 provided at the tip. By appropriately turning the adjusting bolt 28, the amount of contraction of the spring 27 can be changed, so that the pressing force of the pressure roller 20 can be adjusted so that a uniform pressure is applied to the substrate. A stopper 29 for preventing excessive pressurization is provided below the bearing holder 23. The pressure applied by the pressure roller 20 is preferably set to be weaker than the pressure applied by the pressure heating roller 40.
[0032]
The pressure heating roller 40 and the surrounding support structure are the same as those of the pressure roller 20. However, the pressure heating roller 40 has a hollow structure, and the surface of the pressure heating roller 40 is heated by the rod-shaped heater 21 incorporated in the hollow portion. A non-contact or contact-type temperature sensor 30 is disposed near the surface of the pressure heating roller 40, and the temperature of the roller surface is controlled by a temperature controller 31 connected to the temperature sensor 30.
[0033]
The surfaces of the pressure roller 20 and the pressure heating roller 40 are preferably smooth and releasable. For example, a silicon rubber layer can be suitably used.
[0034]
The substrate rear end holding unit D includes a holding roller pair 50 that holds the rear end of the substrate, and a reel 51 that winds and feeds the wire 52 connected to the holding roller pair 50. When the leading end of the flat plate stage A comes to a position facing the pressure roller 20 of the pressure heating unit C, the reel 51 starts the feeding of the wire 52 to interlock the holding roller pair 50 to the flat plate stage A side.
[0035]
Next, the operation of the liquid crystal display device manufacturing apparatus will be described.
[0036]
First, a set of substrates in which positioning holes are provided in advance at end portions so as to correspond to the pins 1a on the flat plate stage A is prepared. At least one of the substrates is a flexible film substrate. A sealing wall for preventing leakage of liquid crystal after bonding may be formed on either substrate. At this stage, spacers may be dispersed on at least one of the substrates by various conventionally known methods.
[0037]
Then, the pin 1a is fitted into the hole of one substrate, and the substrate is placed and fixed on the flat plate stage A. In the other film substrate, the hole at the end is fitted into the pin 1a, and the rear end is held by the holding roller pair 50 of the substrate rear end holding unit D to keep the film substrate rear end away from the other substrate.
[0038]
Next, the fixed quantity discharge unit B causes the syringe 11 to sequentially scan the surface facing the substrate placed on the flat plate stage A, and supplies the liquid crystal material onto the substrate. At this time, it is preferable to supply the liquid crystal material without a gap so as not to take in bubbles. Then, the flat plate stage A is moved at a predetermined speed, and sequentially enters the opposed portions of the pressure roller 20 and the pressure heating roller 40 from the portion to which the liquid crystal material is supplied. In this way, while adjusting the gap using the pressure roller 20 and the pressure heating roller 40, the liquid crystal is simultaneously filled between the upper and lower substrates, and the upper and lower substrates are sequentially bonded together. Bonding may be performed by supplying a relatively large amount of liquid crystal material at an initial stage of supplying the liquid crystal material and extruding the liquid crystal material to the remaining area of the substrate by the pressure roller 20. The gap between the substrates is maintained in advance by spacers dispersed on the substrate. However, spacers may be added to the liquid crystal material in advance, or a resin structure having a predetermined height may be patterned instead of the spacers. The gap between the substrates may be maintained by arranging them.
[0039]
In the case where a seal wall is provided in advance on either one of the upper and lower substrates, when the substrates are bonded, the rollers 20 and 40 are crushed to a height corresponding to the gap between the substrates. It is sealed in between and the upper and lower substrates are bonded. When using a material that exhibits adhesiveness by heating, such as a thermoplastic resin or a thermosetting resin, as a seal wall, or as a spacer material that holds the gap between the upper and lower substrates, the above resin is coated around the spacer particles. When the material is used, the adhesiveness of the seal wall and the adhesion of the spacer particles to the substrate can be increased by increasing the surface temperature of the pressure heating roller 40 to a predetermined temperature.
[0040]
When the substrates are bonded together, the surface of the flat plate stage A may be heated to an appropriate temperature by the heater 2 and the substrate placed on the flat plate stage A may be kept at an appropriate temperature. In general, since the film substrate has a larger thermal expansion coefficient than the glass substrate, when the temperature difference between the temperature of the flat plate stage A and the pressure heating roller 40 is large, the sizes of the upper and lower substrates are different and are stuck. Problems such as misalignment at the time of alignment and distortion of the liquid crystal display element after bonding occur. This problem can be suppressed by raising the surface of the flat stage A to an appropriate temperature, and a more reliable liquid crystal display element can be manufactured. Moreover, when using a thermoplastic resin or a thermosetting resin for the member in a cell, the time required for adhesion | attachment will become shorter if it preheats previously, and the adhesive force will also improve.
[0041]
The reel 51, which is the substrate driving mechanism of the substrate rear end holding unit D, moves the wire 52 in accordance with the movement of the flat plate stage A as the film substrate enters the opposing portion of the pressure roller 20 and the pressure heating roller 40. The pair of holding rollers 50 that are fed out and hold the rear end of the film substrate are lowered to the flat plate stage A side. As a result, while the substrates are bonded together, the rear end of the film substrate is held at a predetermined position away from the flat plate stage A and held at a predetermined angle with respect to the substrate on the flat plate stage A. This prevents bubbles from being mixed at the time of bonding.
[0042]
Thus, when the substrate bonding proceeds and the holding roller pair 50 descends to the vicinity of the flat plate stage A, the reel 51 stops, and finally the rear end of the film substrate is separated from the holding roller pair 50 by the tensile force of the pin 1a. Then, the rear end of the film substrate passes through the pressure and pressure heating roller unit C, and the bonding of the substrates is completed. At the same time, the production of the liquid crystal display element is completed. That is, the step of filling the liquid crystal into the cell and the step of bonding the upper and lower substrates can be performed simultaneously.
[0043]
As described above, in the liquid crystal display element manufacturing apparatus of the present embodiment, the liquid crystal material is gradually pushed from one end to the other end with the film substrate, so that the substrates are overlapped, so that the liquid crystal display element can be manufactured with a simple apparatus configuration. It is. Further, it is not necessary to attach a film substrate to a glass substrate, and a liquid crystal display element can be manufactured with a simple manufacturing process. In addition, a highly reliable liquid crystal display element can be manufactured without taking in bubbles. Furthermore, by previously applying an adhesive material such as a seal wall to one of the substrates, the substrates can be bonded together. Furthermore, a liquid crystal display element can be easily manufactured even when a large film substrate is used. In addition, since it is not necessary to inject the liquid crystal material from the injection port, the liquid crystal material can be used efficiently. In addition, since it is not necessary to immerse the cell in the liquid crystal material reservoir many times, contamination of the liquid crystal material can be prevented.
[0044]
Thereafter, when the position detector 7 detects that the flat plate stage A has reached the stop position, the movement of the flat plate stage A stops. Then, after the operator removes the liquid crystal display element, the flat plate stage A and the quantitative discharge unit B are returned to their original positions, and the holding roller pair 50 is pulled up to the original height to prepare the next liquid crystal display element. Prepare.
[0045]
Second Embodiment
FIG. 5 is a sectional view showing another embodiment of the present invention. As shown in FIG. 5, in the present embodiment, the same liquid crystal display device manufacturing apparatus as that in the first embodiment is housed in a vacuum chamber 63 having a vertically movable mechanism 65. An O-ring 64 is attached to the peripheral edge in contact with the floor surface of the vacuum chamber 63, and is connected to the vacuum pump 60 via the electromagnetic valve 62, so that the inside can be decompressed. Therefore, the atmosphere around the manufacturing apparatus can be kept clean, and the inclusion of impurities, bubbles, etc. into the cell can be more reliably prevented.
[0046]
<Third Embodiment>
FIG. 6 is a perspective view showing still another embodiment of the present invention. The apparatus for manufacturing a liquid crystal display element of the present embodiment is configured to fix the flat plate stage A and move the pressure heating unit C. Specifically, as shown in FIG. 6, an LM block in which a support plate 42 for supporting the rollers 20 and 40 of the pressure heating unit C is fitted to an LM rail 72 provided on the base 100. 73 is attached. Further, a connection block 74 connected to a ball screw drive mechanism 71 driven by a drive source 70 is attached to the support plate 42 of the pressure heating unit C, whereby the pressure heating unit C slides on the LM rail 72. To do. Since other configurations are substantially the same as those of the first embodiment, the same reference numerals are given and detailed descriptions thereof are omitted.
[0047]
Note that both the flat plate stage A and the pressure heating unit C may be moved. In short, any structure may be used as long as both of them can move relative to each other to bond the substrates.
[0048]
<Other embodiments>
The present invention is not limited to the above embodiments, and various modifications can be made. For example, in each of the above-described embodiments, the example in which the two rollers of the pressure roller 20 and the pressure heating roller 40 are used has been described. However, the present invention is not limited thereto, and three or more rollers may be provided. Even when three or more rollers are used, it is preferable that the pressure is gradually increased in the substrate traveling direction, and the heating roller is disposed on the most downstream side .
[0049]
In each of the above embodiments, the example in which the rear end of the substrate is held by the holding roller pair 50 and the holding roller pair 50 is moved up and down by the reel 51 has been described. The rear end of the film substrate may be placed on a plurality of rollers arranged in a row. In short, any configuration that can keep the rear end of the upper substrate away from the lower substrate in accordance with the movement of the substrate is acceptable.
[0050]
Furthermore, in each said embodiment, although the syringe 11 which is a dispenser which supplies a liquid crystal material can move freely within the surface facing the flat plate stage A by the XY robot mechanism 15, it does not restrict to this. For example, a plurality of fixed syringes and slit-shaped supply ports may be provided in the width direction of the substrate, or a die coater may be provided in a position that does not interfere with the bonding, for example, which can be moved only in the width direction of the substrate. .
[0051]
Furthermore, the pressure roller and the pressure heating roller may be pressurized by an air pressure pressure mechanism using an air cylinder or the like instead of the pressure mechanism by the spring 27 used in the above embodiments.
[0052]
【The invention's effect】
As described above, the manufacturing apparatus of the present invention is a flat plate on which one substrate is placed in a manufacturing apparatus for a liquid crystal display element in which a liquid crystal material is sandwiched between a pair of substrates at least one of which is flexible. A liquid crystal supply port for supplying a liquid crystal material onto the substrate placed on the flat plate, and a first and a second additive for pressing a flexible counter substrate toward the substrate on the flat plate through the liquid crystal material. A pressure roller; and a support member that supports the flat plate and the first and second pressure rollers so as to be relatively movable. The flat plate includes a heater for raising the temperature of the surface . The pressure roller is a pressure heating roller provided downstream of the first roller with respect to the relative movement direction of the flat plate, and heats the pair of substrates once pressed by the first roller together with the flat plate. those bonding the two substrates to each other under pressure There, further on the flat plate, the positioning member is provided for positioning said pair of substrates, the positioning member, the first and to be received within the flat plate by pressing the second pressure roller Thus, the apparatus configuration is simple, the liquid crystal display element can be manufactured in a short time, and high productivity can be ensured. In addition, by making the temperature of the flat plate surface variable, it is possible to suppress the positional deviation at the time of bonding the substrates and the distortion of the liquid crystal display element after the bonding of the substrates. Further, when an adhesive material is applied in advance to at least one of the substrates, the substrates can be bonded simultaneously with the bonding.
[0053]
The manufacturing method of the present invention, first placing in the method of manufacturing a liquid crystal display device formed by sandwiching a liquid crystal material between a pair of substrates is a flexible, pre-adhesive material on at least one of the flexible substrate A step, a second step of placing one of the flexible substrates on a flat plate and supplying a liquid crystal material to the surface; and a step of pressing the flexible counter substrate through the liquid crystal material with a pressure member. A third step of applying pressure to the upper flexible substrate and relatively moving the flat plate and the pressing member to bond the counter substrate to the flat plate substrate with the adhesive material. The three steps include a step of pressing the counter substrate toward a substrate on a flat plate by a first pressure member and bonding the substrates together, and the pair of substrates once bonded by the first pressure member. , before the second pressing member and heating By heating and pressurizing toward the substrate on a flat plate that heating the opposed substrate were to include a step of joining the substrates to each other, the manufacturing process is simple, it can be manufactured in a short time, to ensure high productivity be able to. Further, by making the temperature of the flat plate surface variable, it is possible to suppress the positional deviation at the time of bonding the substrates and the distortion of the liquid crystal display element after the bonding of the substrates. Further, when an adhesive material is applied in advance to at least one of the substrates, the substrates can be bonded simultaneously with the bonding.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an overall configuration of a liquid crystal display device manufacturing apparatus according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing a state in which substrates are bonded together.
FIG. 3 is a cross-sectional view of the vicinity of a flat plate stage.
FIG. 4 is a longitudinal sectional view in the vicinity of a pressure heating unit.
FIG. 5 is a longitudinal sectional view showing another embodiment of the present invention.
FIG. 6 is an exploded perspective view showing the overall configuration of still another embodiment of the present invention.
[Explanation of symbols]
A Flat plate stage B Fixed discharge unit C Pressure heating unit D Substrate rear end holding unit 1 Suction table 1a Positioning pin 1b Coil spring 2 Suction table heater 2a, 31 Temperature controller 2b, 30 Temperature sensor 3 Heat insulation plates 4, 25, 73 LM block 5, 71 Ball screw drive mechanism 6, 70 Drive source 7 Position detector 8, 24, 72 LM rail 9, 62 Solenoid valve 10, 60 Vacuum pump 11 Syringe 13 Metering discharge control device 14 Pneumatic source 15 XY Robot mechanism 20 Pressure roller 21 Pressure heating roller heater 23 Bearing holder 25 LM block 27 Spring 28 Adjustment bolt 40 Pressure heating roller 50 Holding roller pair 51 Reel 63 Vacuum chamber

Claims (16)

In a liquid crystal display element manufacturing apparatus in which a liquid crystal material is sandwiched between a pair of substrates at least one of which is flexible,
A flat plate on which one substrate is placed;
A liquid crystal supply port for supplying a liquid crystal material onto the substrate placed on the flat plate;
First and second pressure rollers that press a flexible counter substrate toward the substrate on the flat plate through a liquid crystal material;
A support member that supports the flat plate and the first and second pressure rollers in a relatively movable manner;
The flat plate is provided with a heater for raising the temperature of the surface, and the second pressure roller is a pressure heating roller provided on the downstream side of the first roller with respect to the relative movement direction of the flat plate, The pair of substrates once pressed by the first roller is heated and pressed together with the flat plate to join the substrates together , and a positioning member for positioning the pair of substrates on the flat plate is provided. The apparatus for manufacturing a liquid crystal display element , wherein the positioning member is accommodated in the flat plate by the pressure of the first and second pressure rollers . The apparatus for manufacturing a liquid crystal display element according to claim 1, wherein the flat plate has a suction hole for vacuum-sucking one substrate. The rear end of the opposite substrate and the support, the said flat first, an apparatus for manufacturing a liquid crystal display device according to claim 1 or 2 including a rear supporting member linked to the relative movement of the second pressure roller . The apparatus for manufacturing a liquid crystal display element according to claim 3 , wherein the rear end support member includes a pair of holding rollers that hold a rear end of the counter substrate. The rear end support member includes a holding member that holds the rear end of the counter substrate, and a reel that feeds a wire connected to the holding member in conjunction with the relative movement of the flat plate and the first and second pressure rollers. The manufacturing apparatus of the liquid crystal display element of Claim 3 provided with these. The first apparatus for producing the liquid crystal display device according to any one of claims 5 to second pressure roller from claim 1, further comprising a spring for pressing in the normal direction of the flat plate. The apparatus for manufacturing a liquid crystal display element according to claim 6 , further comprising an adjusting unit that adjusts the amount of contraction of the spring. The first apparatus for producing the liquid crystal display device according to any one of claims 1 to 5 having a pressurizing means for pressurizing the second pressure roller in the normal direction of the flat plate by air pressure. The said liquid crystal display element manufacturing apparatus in any one of Claim 1-8 further equipped with the vacuum chamber which accommodates the manufacturing apparatus of the said liquid crystal display element in the inside. Said first and said flat plate, a support member for supporting the second pressing roller, the first, any of claims 1 to 9, the second pressure roller and the fixed support for movably supporting the plate An apparatus for manufacturing a liquid crystal display element according to claim 1. It said first and said flat plate, a support member for supporting the second pressing roller, the first fixing supporting the flat plate, one of claims 1 to 9 for movably supporting the second pressure roller An apparatus for manufacturing a liquid crystal display element according to claim 1. The manufacturing method of the liquid crystal display device formed by sandwiching a liquid crystal material between a pair of substrates is a flexible,
A first step of previously arranging an adhesive material on at least one flexible substrate;
A second step of placing any one of the flexible substrates on a flat plate and supplying a liquid crystal material to the surface;
A flexible counter substrate is pressed against the flexible substrate on the flat plate through a liquid crystal material by a pressurizing member, and the flat plate and the pressurizing member are relatively moved so that the counter substrate is placed on the flat plate. A third step of bonding to the substrate with the adhesive material,
The third step includes a step of pressing the counter substrate toward a substrate on a flat plate by a first pressure member and bonding the substrates together, and the pair of substrates once bonded by the first pressure member A step of heating and pressing the opposing substrates toward a substrate on a flat plate that has generated heat by using a second pressure member that has generated heat, and bonding the substrates together.
A method for producing a liquid crystal display element. The method for manufacturing a liquid crystal display element according to claim 12 , wherein in the third step, the substrates are bonded while maintaining the rear end of the counter substrate at a position away from the substrate on the flat plate. The method for manufacturing a liquid crystal display element according to claim 12 or 13, wherein in the first step, spacer particles coated with a resin are disposed on at least one substrate. The manufacturing method of the liquid crystal display element in any one of Claims 12-14 which performs each said process in a vacuum chamber. The flat plate has a heater for raising the temperature of the surface and a plurality of suction holes for vacuum-adsorbing one substrate. In the third step, one flexible substrate is formed into a flat plate. The liquid crystal according to any one of claims 12 to 15, wherein a flexible counter substrate is heated and pressurized by a second pressure member toward the substrate on the flat plate while the substrate on the flat plate is heated by the heater in the adsorbed state. A method for manufacturing a display element.

Images