JPWO2011118517A1 - Method and apparatus for manufacturing liquid crystal element - Google Patents

Abstract

A method and apparatus for manufacturing a liquid crystal element that simultaneously performs alignment processing and formation of a liquid crystal layer by using an alignment method of liquid crystal molecules instead of rubbing processing, and has excellent productivity and greatly shortens the process. A step of relatively moving in a direction perpendicular to the direction, and a step of applying a liquid crystal from the slit-shaped base to the substrate and irradiating an energy wave by a polymerization initiating means toward the liquid crystal outlet portion of the slit-shaped base. Manufacturing method and manufacturing apparatus for liquid crystal element.

Description

  The present invention relates to a method and an apparatus for manufacturing a liquid crystal element, and relates to an alignment treatment and a liquid crystal layer forming technique.

  Conventionally, the following processes are performed as alignment processing of a liquid crystal element. First, the nonwoven fabric roll is rubbed against the substrate on which the alignment film is applied while rotating. A minute groove is formed in the alignment film (rubbing treatment). The alignment film in which the grooves are formed is washed, and liquid crystal is dropped (in the case of bonding the substrates, injected between the substrates), the liquid crystals are aligned along the grooves, and the alignment process is completed.

  On the other hand, a method described in Patent Document 1 is known as an alignment process instead of the rubbing process. FIG. 9 shows a schematic configuration diagram of a liquid crystal element manufacturing apparatus disclosed in Patent Document 1. In FIG. As shown in FIG. 9, the liquid crystal element manufacturing apparatus includes a substrate stage 20 that horizontally moves the substrate 11, a transfer roll 21 that transfers the liquid crystal 5 to the substrate 11 in accordance with the movement of the substrate 11, and a liquid crystal supply unit tank 22. A doctor blade 23, a gravure roll 24, an ultraviolet irradiation means 25, and an electric field generating power supply 26 for stretching the liquid crystal 5 so as to spread the liquid crystal 5 supplied from the liquid to the transfer roll 21 with a uniform thickness.

  The ultraviolet irradiation means 25 irradiates the liquid crystal 5 applied from the lower side of the substrate 11 with ultraviolet rays. A polymerization initiator 6 is added to the liquid crystal 5.

  The electric field generating power supply 26 is connected to the transfer roll 21 via an electrode 27 and to the substrate stage 20 via an electrode 28. When the liquid crystal layer 29 formed on the transfer roll 21 contacts the moving substrate 11, an AC voltage is applied between the electrode 27 and the electrode 28. The orientation direction of the liquid crystal 5 of the liquid crystal layer 29 is determined by the strength of the applied voltage. As shown in FIG. 10, ultraviolet rays are irradiated from below the substrate 11 by the ultraviolet irradiation means 25 while maintaining the direction of the liquid crystal 5 to be aligned. The polymerization initiator 6 reacts by the ultraviolet irradiation, and is fixed on the substrate 11 in a state where the substrate interface of the liquid crystal layer 29 transferred to the substrate 11 is oriented.

  Thus, the manufacturing apparatus of FIG. 9 does not generate static electricity or dust due to the rubbing process. In addition, the substrate cleaning process which has been conventionally performed after the rubbing process is unnecessary, and the process is shortened.

JP 2009-175247 A

  The transfer roll system as described in Patent Document 1 has the following problems. First, there is a problem that the inclination between the transfer roll 21 and the substrate 11 slightly changes with time due to wear of the roller itself of the transfer roll 21 body. In addition, it is difficult to maintain the manufacturing accuracy of the transfer roll 21 main body, attach the transfer roll 21, and adjust the gap between the transfer roll 21 and the substrate 11, and are particularly unsuitable for mass production of large liquid crystal panels. is there. There is also a problem that a liquid pool of the liquid crystal 5 is formed between the transfer roll 21 and the substrate 11, and the liquid crystal 5 in the liquid pool portion undergoes a polymerization reaction due to ultraviolet irradiation. Due to these problems, it is difficult to apply liquid crystal with a uniform thickness on the substrate and fix it on the substrate with ultraviolet rays.

  Therefore, in view of the above problems, the object of the present invention is to perform alignment treatment and liquid crystal layer formation simultaneously using a liquid crystal alignment method instead of rubbing as described in Patent Document 1, and has excellent productivity. An object of the present invention is to provide a manufacturing method and a manufacturing apparatus of a liquid crystal element that can greatly reduce the process.

In order to solve the above-mentioned problem, the invention described in claim 1
A method of manufacturing a liquid crystal element in which a liquid crystal in which a polymerization initiator is added to a polymer liquid crystal is applied on a substrate from a slit-shaped base,
Moving the substrate in a direction perpendicular to the slit direction of the die; and
And applying a liquid crystal to the substrate from the slit-shaped base, and irradiating an energy wave toward the liquid crystal outlet portion of the slit-shaped base by a polymerization initiating means.

The invention according to claim 2 is the invention according to claim 1,
The base is composed of an upstream block and a downstream block in the direction in which the liquid crystal is applied to the substrate. The upstream block and the downstream block form a slit-shaped base, and the upstream block and the downstream block are electrically connected. A base having one electrode of a power supply device that is electrically insulated and applies a voltage connected to the frame of the upstream block and the other electrode connected to the frame of the downstream block,
The process of applying the liquid crystal on the substrate from the slit-shaped base,
This is a method for manufacturing a liquid crystal element, which is a step of applying a liquid crystal from a base onto a substrate while generating an electric field between an upstream block and a downstream block constituting the base.

The invention according to claim 3 is the invention according to claim 2,
In the method of manufacturing a liquid crystal element, the power supply device includes a step of varying an intensity of an electric field generated by the power supply device between a start and an end of relative movement of the base and the substrate.

The invention according to claim 4 is the invention according to claim 1,
The base is composed of an upstream block and a downstream block in the direction in which the liquid crystal is applied to the substrate. The upstream block and the downstream block form a slit-shaped base, and the upstream block and the downstream block are electrically connected. One of the electrodes of the power supply device that is electrically insulated and applies the voltage is connected to the upstream block or the downstream block, and the other electrode is connected to the substrate stage that holds the substrate,
The process of applying the liquid crystal on the substrate from the slit-shaped base,
This is a method for manufacturing a liquid crystal element, which is a process of applying liquid crystal from a base onto a substrate while generating an electric field between an upstream block or downstream block constituting the base and a substrate stage.

The invention according to claim 5 is the invention according to claim 4,
In the method of manufacturing a liquid crystal element, the power supply device includes a step of varying an intensity of an electric field generated by the power supply device between a start and an end of relative movement of the base and the substrate.

The invention described in claim 6
An apparatus for manufacturing a liquid crystal element for applying a liquid crystal in which a polymerization initiator is added to a polymer liquid crystal on a substrate,
A slit-shaped base for applying liquid crystal on the substrate;
A substrate stage that relatively moves the substrate at right angles to the slit direction of the die;
Polymerization initiation means for irradiating an energy wave toward the liquid crystal applied from the base, and
An apparatus for manufacturing a liquid crystal element, characterized in that an energy wave is irradiated by a polymerization initiating means toward a liquid crystal outlet portion of a slit-shaped base while applying liquid crystal to a substrate from the slit-shaped base.

The invention according to claim 7 is the invention according to claim 6,
The base is composed of an upstream block and a downstream block in the direction in which the liquid crystal is applied to the substrate. The upstream block and the downstream block form a slit-shaped base, and the upstream block and the downstream block are electrically connected. 1 is a liquid crystal device manufacturing apparatus in which one electrode of a power supply device that is electrically insulated and applies a voltage is connected to a frame of an upstream block, and the other electrode is connected to a frame of a downstream block.

The invention according to claim 8 is the invention according to claim 7,
An apparatus for manufacturing a liquid crystal element, wherein the power supply device has a function of varying the intensity of an electric field generated between the upstream block and the downstream block from the start to the end of application of liquid crystal to a substrate. .

The invention according to claim 9 is the invention according to claim 6,
The base is composed of an upstream block and a downstream block in the direction in which the liquid crystal is applied to the substrate. The upstream block and the downstream block form a slit-shaped base, and the upstream block and the downstream block are electrically connected. 1 is an apparatus for manufacturing a liquid crystal element in which one electrode of a power supply device that is electrically insulated and applies a voltage is connected to an upstream block or a downstream block, and the other electrode is connected to a substrate stage that holds a substrate.

The invention according to claim 10 is the invention according to claim 9,
Manufacture of a liquid crystal element having a function in which the power supply device varies the intensity of an electric field generated between the upstream block or the downstream block and the substrate stage from the start to the end of the application of liquid crystal to the substrate Device.

  According to the first aspect of the present invention, the liquid crystal applied from the slit-shaped base comes to be pulled in the moving direction of the substrate by coming into contact with the substrate moving relatively at right angles to the slit direction. Therefore, the flow direction of the liquid crystal near the slit-shaped base is one direction. Then, a phenomenon occurs in which the entire liquid crystal applied from the base is directed in the same direction as the flow direction. The liquid crystal in contact with the substrate is irradiated with energy by the polymerization initiating means, and polymerization of the polymerization initiator added to the liquid crystal starts. As a result, the alignment state of the liquid crystal layer at the substrate interface is fixed to the substrate.

  The slit-shaped base can be manufactured with high precision. In addition, it can be easily applied to a large substrate. Unlike the transfer drum, there is no change in the mounting angle with time, and there is no liquid pool during application. Attachment to the device and adjustment of the gap with the substrate can be easily performed. By using such a slit-shaped base and applying liquid crystal on the substrate, the thickness of the coating film becomes uniform. Since the liquid crystal is irradiated with ultraviolet rays by the polymerization initiating means at the outlet portion of the die, the aligned liquid crystal can be fixed on the substrate in a short time.

  According to the second aspect of the present invention, since an electric field is applied between the upstream block and the downstream block forming the die to the liquid crystal applied on the substrate from the slit-like die, immediately before application. Thus, the liquid crystal can be efficiently aligned.

  According to the invention described in claim 4, since the electric field is applied between the base and the substrate to the liquid crystal applied on the substrate from the slit-shaped base, the liquid crystal is efficiently aligned immediately after the application. Will be able to.

  According to the invention described in claim 3 or 5, the intensity of the electric field can be varied according to the difference in the characteristics of the liquid crystal molecules. The difference in the characteristics of the liquid crystal molecules is, for example, the characteristics at the start of application of the liquid crystal to the substrate, the characteristics at the time of steady application (continuous application), and the like. At the start of application, the liquid crystal flow rate is considered to be slow. On the other hand, the liquid crystal flow is stable during steady application. Therefore, a high-quality liquid crystal element can be manufactured in accordance with the characteristics of the liquid crystal flow rate.

  According to the sixth aspect of the present invention, the liquid crystal applied from the slit-shaped base is pulled in the moving direction by the relative movement of the substrate. Then, the liquid crystal near the outlet of the base is aligned. Since the oriented liquid crystal is irradiated with energy waves, the polymerization initiator contained in the liquid crystal coated on the substrate starts to be polymerized and fixed along the moving direction of the substrate. Therefore, even a large substrate can be applied and oriented with a uniform liquid crystal thickness.

  According to the invention described in claim 7, since an electric field is applied between the upstream block and the downstream block forming the die to the liquid crystal to be coated on the substrate from the slit-shaped die, immediately before coating. Thus, the liquid crystal can be efficiently aligned.

  According to the invention described in claim 9, since an electric field is applied between the base and the substrate to the liquid crystal applied on the substrate from the slit-shaped base, the liquid crystal is efficiently aligned immediately before the application. Will be able to.

  According to the invention described in claim 8 or 10, the strength of the electric field can be varied according to the difference in the characteristics of the liquid crystal molecules. The difference in the characteristics of the liquid crystal molecules is, for example, the characteristics at the start of application of the liquid crystal to the substrate, the characteristics at the time of steady application (continuous application), and the like. At the start of application, the liquid crystal flow rate is considered to be slow. On the other hand, the liquid crystal flow is stable during steady application. Therefore, a high-quality liquid crystal element can be manufactured in accordance with the characteristics of the liquid crystal flow rate.

It is a schematic perspective view of the manufacturing apparatus of the liquid crystal element of the 1st Embodiment of this invention. It is a flowchart explaining the manufacturing method of the liquid crystal element of 1st Embodiment. It is a schematic side view explaining the state between a liquid crystal layer, a nozzle | cap | die, and a board | substrate. It is a schematic perspective view of the manufacturing apparatus of the liquid crystal element of the 2nd Embodiment of this invention. It is a schematic perspective view of the manufacturing apparatus of the liquid crystal element of the 3rd Embodiment of this invention. It is a schematic perspective view of the manufacturing apparatus of the liquid crystal element of the 4th Embodiment of this invention. It is a schematic perspective view of the mask used in the 5th Embodiment of this invention. It is a graph explaining the pattern of electric field strength. It is a schematic perspective view of the manufacturing apparatus of the liquid crystal element which does not use a rubbing process. It is a schematic side view explaining the state between the transfer roll of a liquid crystal layer, and a board | substrate.

<First Embodiment>
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of the liquid crystal device manufacturing apparatus according to the first embodiment. In addition, about the code | symbol used when describing background art, the same code | symbol is used about the part similar to this Embodiment. In FIG. 1, the three axes of the orthogonal coordinate system are X, Y, and Z, the XY plane is the horizontal plane, and the Z-axis direction is the vertical direction.

  As shown in FIG. 1, the liquid crystal element manufacturing apparatus 1 includes a substrate stage 20 that holds a substrate 11, an ultraviolet irradiation unit 25 that is disposed below the substrate stage 20, a slit nozzle 30, and a slit nozzle 30. The dispenser 31 supplies the liquid crystal 5.

  The substrate stage 20 can be a transparent glass table or the like. The substrate stage 20 is movable in the horizontal direction (X direction), and moves the substrate 11 held in synchronization with the application of the liquid crystal 5 from the slit nozzle 30.

  The ultraviolet irradiation means 25 irradiates ultraviolet rays below the substrate stage 20 toward the nozzle direction of the slit nozzle 30. An activation energy beam that activates the polymerization initiator 6 added to the liquid crystal 5 as well as ultraviolet rays may be used. The ultraviolet irradiation means 25 corresponds to the polymerization start means of the present invention.

  The slit nozzle 30 is divided into an upstream block 32 and a downstream block 33 with respect to the application direction of the liquid crystal layer 29 applied to the substrate 11. Side surfaces of the upstream block 32 and the downstream block 33 are connected by connecting members 34a and 34b (shown in a round frame in the figure). The upstream block 32 and the downstream block 33 are made of a conductor, and the connecting members 34a and 34b are made of an insulator. The upstream block 32 and the downstream block 33 are arranged at a predetermined interval, and form a slit-shaped base 35 for applying the liquid crystal 5.

  The dispenser 31 supplies the liquid crystal 5 added with the polymerization initiator 6 to the slit nozzle 30 by a predetermined amount. Instead of the dispenser 31, a syringe pump or a precision pump can be used. The dispenser 31 and the slit nozzle 30 are connected by a nozzle pipe 36.

  A method of aligning liquid crystal on the substrate using the liquid crystal element manufacturing apparatus 1 having such a configuration will be described with reference to the flowchart of FIG.

  First, the liquid crystal 5 to which the polymerization initiator 6 has been added is filled in the dispenser 31 (step ST10).

  Next, the substrate 11 is sucked and held on the substrate stage 20. The alignment film 10 is not applied to the substrate 11 (step ST11).

  Next, the liquid crystal 5 is supplied from the dispenser 31 to the slit nozzle 30. The gap (gap) between the slit nozzle 30 and the substrate 11 is adjusted to a predetermined value, and the substrate 11 is moved at a predetermined speed in a direction perpendicular to the slit-shaped base 35 of the slit nozzle 30 (X direction in FIG. 1) (step). ST12).

  Next, the liquid crystal 5 is applied to the substrate 11 from the slit-shaped base 35. Ultraviolet rays are irradiated from below the substrate 11 using the ultraviolet irradiation means 25 toward the liquid crystal 5 applied from the slit-shaped base 35. This state is shown in FIG. 3 (step ST13). The liquid crystal 5 applied from the slit-shaped base 35 comes to be pulled in the moving direction of the substrate 11 by coming into contact with the substrate 11 moving relatively at right angles to the slit direction. Therefore, the flow direction of the liquid crystal 5 in the vicinity of the slit-shaped base 35 is one direction. Then, a phenomenon occurs in which the entire liquid crystal applied from the base is directed in the same direction as the flow direction.

  Next, the polymerization initiator 6 on the substrate 11 side of the liquid crystal layer 29 applied on the substrate 11 undergoes a polymerization reaction (step ST14). The alignment state of the liquid crystal layer 29 at the interface of the substrate 11 is fixed to the substrate 11. When the liquid crystal 5 is applied to a predetermined region of the substrate 11, the alignment process of the liquid crystal 5 is completed.

<Second Embodiment>
Next, a second embodiment of the present invention will be described. FIG. 4 is a schematic perspective view of a liquid crystal device manufacturing apparatus according to the second embodiment. An electric field generating power supply 26 is added to the liquid crystal element manufacturing apparatus of the first embodiment described above.

  The electric field generating power source 26 is connected to electrodes 27 and 28 provided in the upstream block 32 and the downstream block 33 of the slit nozzle 30 via a cable. Therefore, an electric field is applied to the liquid crystal 5 applied onto the substrate 11 from the slit of the base 35, so that the liquid crystal 5 can be efficiently aligned immediately before the application.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. FIG. 5 is a schematic perspective view of a liquid crystal device manufacturing apparatus according to the third embodiment. The wiring of the electric field generating power supply 26 used in the second embodiment is changed.

  One pole of the electric field generating power supply 26 is connected to the electrode 27 provided on the upstream block 32 or the downstream block 33 of the slit nozzle 30, and the other pole is connected to the electrode 28 provided on the substrate stage 20. Has been. Therefore, as in the second embodiment, an electric field is applied to the liquid crystal 5 applied onto the substrate 11 from the slit of the base 35, so that the liquid crystal 5 can be efficiently aligned immediately before application. Become.

  In the second and third embodiments, the intensity of the electric field applied from the electric field generating power source 26 is varied from the start of application to the end of application to the substrate 11 as shown in FIG. You may control so that it may become a predetermined pattern (profile).

  In FIG. 8, the strength of the applied electric field is hardly given during standby before coating. When the application is started, the electric field strength is given in a short time. In the case of FIG. 8, a voltage of about 12 V is applied in 0.1 sec. The liquid crystal flow that has been applied is generated, and is aligned in a short time in one direction. During steady application, the liquid crystal flow becomes stable and the electric field strength is lowered. At the end of coating, the electric field strength is increased again to cope with changes in liquid crystal characteristics. In the case of FIG. 8, a voltage of about 10 V is applied in 0.1 sec.

  In this way, the electric field strength can be varied according to the difference in the characteristics of the liquid crystal molecules. Differences in the characteristics of the liquid crystal molecules are, for example, differences in characteristics at the start of application of the liquid crystal 5 to the substrate 11, characteristics in steady application (continuous application), and the like. Therefore, a high quality liquid crystal element can be manufactured.

<Fourth embodiment>
Next, a fourth embodiment of the present invention will be described. FIG. 6 is a schematic perspective view of a liquid crystal device manufacturing apparatus according to the fourth embodiment. The arrangement of the ultraviolet irradiation means 25 used in the first to third embodiments is changed from the nozzle lower position A of the slit nozzle 30 to the transport downstream position B where the application of the liquid crystal 5 to the substrate 11 is completed. At the transport downstream position B, the ultraviolet irradiation means 25 irradiates ultraviolet rays toward the substrate 11 on which the liquid crystal 5 has been applied. In FIG. 6, irradiation is performed from the lower side of the substrate 11, but irradiation may be performed from the upper side.

  Then, the liquid crystal 5 applied to the substrate 11 from the base 35 is aligned (vertically aligned) in the vertical direction (Z direction). Further, the polymerization initiator 6 on the substrate 11 side of the liquid crystal layer 29 applied on the substrate 11 undergoes a polymerization reaction, and the alignment state of the liquid crystal layer 29 at the interface of the substrate 11 is fixed to the substrate 11. In the first to third embodiments, the liquid crystal 5 is aligned in the horizontal direction (horizontal alignment).

<Fifth embodiment>
Next, a fifth embodiment of the present invention will be described. FIG. 7 is a schematic perspective view of a mask 37 used in the fifth embodiment. The mask 37 is provided with an opening 37a and a shielding part 37b. The mask 37 is disposed below the substrate 11 of the liquid crystal element manufacturing apparatus 1 used in the first embodiment, and moves together with the transport of the substrate 11. Therefore, in the liquid crystal 5 applied from the slit-shaped base 35, only the portion located in the opening 37 a of the mask 37 is horizontally aligned, and the polymerization initiator 6 undergoes a polymerization reaction and is fixed to the substrate 11.

  Next, the mask 37 disposed below the substrate 11 is removed, and ultraviolet rays are irradiated by the ultraviolet irradiation means 25 from above or below the substrate 11. Except for the portion where the liquid crystal 5 has already been fixed to the substrate 11 as horizontal alignment, it is vertically aligned as in the fourth embodiment, and is fixed to the substrate 11 by the polymerization reaction of the polymerization initiator 6. By using the mask 37 in this way, a horizontal alignment portion and a vertical alignment portion can be formed on the substrate 11.

DESCRIPTION OF SYMBOLS 1 Liquid crystal element manufacturing apparatus 5 Liquid crystal 6 Polymerization initiator 11 Substrate 20 Substrate stage 21 Transfer roll 22 Liquid crystal supply tank 23 Doctor blade 24 Gravure roll 25 Ultraviolet irradiation means 26 Electric power generating power source 27 Electrode 28 Electrode 29 Liquid crystal layer 30 Slit nozzle 31 Dispenser 32 Upstream block 33 Downstream block 34a, 34b Connecting member 35 Base 36 Nozzle pipe 37 Mask 37a Opening 37b Shielding portion

Claims (10)

A method of manufacturing a liquid crystal element in which a liquid crystal in which a polymerization initiator is added to a polymer liquid crystal is applied on a substrate from a slit-shaped base,
Moving the substrate in a direction perpendicular to the slit direction of the die; and
And applying a liquid crystal to the substrate from the slit-shaped base and irradiating an energy wave toward the liquid crystal outlet of the slit-shaped base by a polymerization initiating means. In the invention of claim 1,
The base is composed of an upstream block and a downstream block in the direction in which the liquid crystal is applied to the substrate. The upstream block and the downstream block form a slit-shaped base, and the upstream block and the downstream block are electrically connected. A base having one electrode of a power supply device that is electrically insulated and applies a voltage connected to the frame of the upstream block and the other electrode connected to the frame of the downstream block,
The process of applying the liquid crystal on the substrate from the slit-shaped base,
A method for manufacturing a liquid crystal element, which is a step of applying a liquid crystal from a base onto a substrate while generating an electric field between an upstream block and a downstream block constituting the base. In the invention of claim 2,
A method of manufacturing a liquid crystal element, comprising: a step in which the power supply device varies the intensity of an electric field generated by the power supply device between the start and end of relative movement of the base and the substrate. In the invention of claim 1,
The base is composed of an upstream block and a downstream block in the direction in which the liquid crystal is applied to the substrate. The upstream block and the downstream block form a slit-shaped base, and the upstream block and the downstream block are electrically connected. One of the electrodes of the power supply device that is electrically insulated and applies the voltage is connected to the upstream block or the downstream block, and the other electrode is connected to the substrate stage that holds the substrate,
The process of applying the liquid crystal on the substrate from the slit-shaped base,
A method for manufacturing a liquid crystal element, which is a step of applying liquid crystal from a base onto a substrate while generating an electric field between an upstream block or downstream block constituting the base and a substrate stage. In the invention of claim 4,
A method of manufacturing a liquid crystal element, comprising: a step in which the power supply device varies the intensity of an electric field generated by the power supply device between the start and end of relative movement of the base and the substrate. An apparatus for manufacturing a liquid crystal element for applying a liquid crystal in which a polymerization initiator is added to a polymer liquid crystal on a substrate,
A slit-shaped base for applying liquid crystal on the substrate;
A substrate stage that relatively moves the substrate at right angles to the slit direction of the die;
Polymerization initiation means for irradiating an energy wave toward the liquid crystal applied from the base, and
An apparatus for manufacturing a liquid crystal element, characterized in that an energy wave is irradiated by a polymerization initiating means toward a liquid crystal outlet portion of a slit-shaped base while applying liquid crystal to the substrate from the slit-shaped base. In the invention of claim 6,
The base is composed of an upstream block and a downstream block in the direction in which the liquid crystal is applied to the substrate. The upstream block and the downstream block form a slit-shaped base, and the upstream block and the downstream block are electrically connected. The device for manufacturing a liquid crystal element, in which one electrode of a power supply device that is electrically insulated and applies a voltage is connected to the frame of the upstream block and the other electrode is connected to the frame of the downstream block. In the invention of claim 7,
An apparatus for manufacturing a liquid crystal element, wherein the power supply device has a function of varying the intensity of an electric field generated between the upstream block and the downstream block from the start to the end of application of liquid crystal to a substrate. In the invention of claim 6,
The base is composed of an upstream block and a downstream block in the direction in which the liquid crystal is applied to the substrate. The upstream block and the downstream block form a slit-shaped base, and the upstream block and the downstream block are electrically connected. Manufacturing apparatus of a liquid crystal element in which one electrode of a power supply device that is electrically insulated and applies a voltage is connected to an upstream block or a downstream block, and the other electrode is connected to a substrate stage that holds a substrate. In the invention of claim 9,
Manufacture of a liquid crystal element having a function in which the power supply device varies the intensity of an electric field generated between the upstream block or the downstream block and the substrate stage from the start to the end of the application of liquid crystal to the substrate apparatus.

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