JP2009175681A - Liquid crystal applying method and liquid crystal applying device for liquid crystal display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To resolve the problem that panel manufacturing process is made complicated by a baking step of eliminating flecks which are caused on liquid crystal by a conventional liquid crystal dropping method and degrade the display quality of a liquid crystal display device. <P>SOLUTION: A liquid crystal discharge nozzle is located in the proximity of a substrate, and liquid crystal is applied to the substrate by coating a long ellipse-shaped liquid crystal on the substrate while not dripping the liquid crystal like droplets, thereby preventing the damage to an orientation layer during liquid crystal application and deterioration of the display performance caused by flecks, and manufacturing display panels with a better display performance. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for applying a liquid crystal to a liquid crystal display panel and a liquid crystal application apparatus.

  A liquid crystal display (LCD), which is one of the display devices, includes a TFT substrate, a color filter substrate facing the TFT substrate, and an optical signal applied between the two substrates when light is applied. A liquid crystal display panel having a liquid crystal for determining whether or not transmission is possible.

  In a liquid crystal display panel, there are a liquid crystal injection method and a liquid crystal dropping method as a method of interposing a liquid crystal between a TFT substrate and a color filter substrate.

  In the liquid crystal injection method, a liquid crystal is injected by forming a vacuum pressure in the cell gap formed by the thickness of the sealing material between the TFT substrate and the color filter substrate of the liquid crystal display panel.

  However, such a liquid crystal injection method requires a step of supplying a larger amount of liquid crystal than a desired amount of liquid crystal inside the cell gap or cleaning the liquid crystal attached to the external surface of the liquid crystal display panel. A liquid crystal intervening method for solving the problem is a liquid crystal dropping method.

  As shown in FIG. 1, the liquid crystal dropping method uses a nozzle 3 provided in a dispenser head to drop liquid crystal 5 onto the TFT substrate 1 or the color filter substrate 1 in the form of droplets, and the color filter substrate on which the liquid crystal has been dropped. When the TFT substrate is aligned and then cured using ultraviolet rays, a seal line between the two substrates is cured, and the TFT substrate and the color filter substrate are firmly bonded.

  That is, in the liquid crystal dropping method, after a seal line is formed on a TFT substrate or a color filter substrate, liquid crystals are sequentially dropped into a display area defined by the seal line in a predetermined size.

  However, when liquid crystal is interposed between two substrates by the conventional liquid crystal dropping method, spots 5a are generated as shown in FIG.

  Assuming the reason for the occurrence of spots on the substrate 1, first, in the process of discharging liquid crystal to the substrate, an afterimage such as a stain of the liquid crystal is generated after the panel is attached due to the static electricity in the substrate. Secondly, the liquid crystal dropped on the alignment film is flowed, and the alignment film is damaged, and spots associated with changes in pretilt or the like are generated.

  Based on this assumption, it can be seen that the spots generated in the liquid crystal dropping step are generated due to a luminance difference between the region where the liquid crystal is dropped and the region where the dropped liquid crystal is reflowed.

  That is, the liquid crystal is not uniformly dropped on the TFT substrate or the color filter substrate, but is dropped only at a predetermined dropping position to generate spots.

  As a result, there is a problem that the display quality of the liquid crystal display device deteriorates due to the spots as described above, and in order to remove such spots, a separate process, that is, a baking process should be performed. When the panel manufacturing process becomes complicated overall, there is a disadvantage.

  The present invention has been made in order to solve such problems, and the liquid crystal is not applied by dropping the liquid crystal onto the substrate in a drop shape, but by a proximity application method in which the liquid crystal is applied to the substrate in a long oval shape. Liquid crystal coating method for liquid crystal display panel and liquid crystal coating, which can solve the problem of deterioration of display performance due to spot generation and the like by preventing the alignment film from being damaged during liquid crystal coating by being applied to the substrate An object is to provide an apparatus.

  The present invention also provides a liquid crystal application method for a liquid crystal display panel, which can prevent an afterimage of a spotted spot by previously providing an ionization device at a position close to a nozzle from which liquid crystal is discharged before liquid crystal application to remove static electricity from the substrate. Another object is to provide a liquid crystal coating apparatus.

  A liquid crystal application method for a liquid crystal display panel according to the present invention for realizing the above-described problem includes a first stage in which a nozzle from which liquid crystal is discharged is positioned close to the substrate at a height at which the liquid crystal can be applied to the upper portion of the substrate; The liquid crystal is ejected and applied to the substrate while moving the nozzle, and the second step of applying the liquid crystal while moving the nozzle so that the liquid crystal applied to the substrate has a long elliptical shape is performed.

  Here, in the first stage, the liquid crystal application height of the nozzle is set to such a height that the liquid crystal discharged from the nozzle can be applied while being attached to the substrate without being dropped on the substrate. It is preferable.

  And it is preferable to apply | coat so that the elliptical liquid crystal apply | coated to the board | substrate in the said 2nd step may be located for every predetermined space | interval.

  In addition, it is preferable that the second stage proceeds while removing static electricity using an ionizer before applying the liquid crystal in front of the moving direction of the nozzle.

  Furthermore, a liquid crystal coating apparatus for a liquid crystal display panel according to the present invention for realizing the above-described problems includes a dispenser head positioned on an upper portion of a substrate, and a liquid crystal provided on the dispenser head so that liquid crystal can be applied to the substrate. And a control mechanism for controlling the position of the nozzle so that the liquid crystal discharged from the nozzle is applied to the substrate in a long oval shape without being dropped on the substrate. It is characterized by being configured.

  Here, the dispenser head includes a vertical transfer mechanism configured to be able to adjust the vertical height of the nozzle from the substrate by a control signal of the control mechanism.

  The control mechanism is preferably configured to control the vertical transfer mechanism so that the height of the nozzle can be adjusted according to the type, state, application amount, and application form of the liquid crystal applied to the substrate.

  At this time, the control mechanism has a height setting table configured to determine the application height of the nozzle based on at least one of the type, state, application amount, and application form of the liquid crystal applied to the substrate. A data storage unit, a selection input unit configured to allow an operator to select and input a type, a state, a coating amount, and a coating form of liquid crystal to be applied to the substrate; and the data according to an input signal of the selection input unit An output control unit for controlling the height of the nozzle by outputting a signal to the vertical transfer mechanism after determining the height of the nozzle using the information of the height setting table stored in the storage unit Can be done.

  In addition, a liquid crystal coating device for a liquid crystal display panel according to the present invention for realizing the above-described problems includes a dispenser head positioned on an upper portion of a substrate, a nozzle provided in the dispenser head and supplied with liquid crystal from a syringe and ejected. And an ionization device that is provided in the dispenser head and discharges static electricity by blowing ionized air from the front side in the direction in which the nozzle moves to the substrate.

  Here, it is preferable that the dispenser head includes a nozzle mounting portion to which the nozzle is attached, and the nozzle mounting portion is provided with an ionization device mounting portion to which a nozzle of the ionizer is attached.

  At this time, it is preferable that the ionizer mounting portion includes a fixing device for fixing the ionizer nozzle.

  The liquid crystal coating method and liquid crystal coating apparatus for a liquid crystal display panel according to the present invention have the following effects.

  In the present invention, when the liquid crystal is applied to the substrate, the liquid crystal is not dropped and applied in a state where the nozzle is positioned close to the substrate, but is applied in a long elliptical shape in a form attached to the substrate. Therefore, it is possible to prevent the alignment film from being damaged at the time of applying the liquid crystal, solve the problem that the display performance is deteriorated due to the generation of spots, etc., and to produce a display panel having a better display performance. is there.

  In addition, the present invention is configured to blow out ionized air to the substrate before applying the liquid crystal using an ionizer, so that static electricity generated on the substrate can be removed. The present invention has the effect of preventing the afterimages of the spotted spots generated in advance and improving the reliability of the manufacturing process of the liquid crystal display panel.

  In the present invention, since the nozzle of the ionization device is provided at a position adjacent to the nozzle from which the liquid crystal is discharged, the liquid crystal is applied immediately after the static electricity is removed, thereby minimizing the liquid crystal application defect and improving the efficiency of the liquid crystal application process. There is an effect that can be improved.

  Embodiments according to the present invention will be described below with reference to the drawings. In addition, since the structure which attached | subjected the same referential mark in each drawing shows that it is the same structure, the description is abbreviate | omitted.

  FIG. 3 is a schematic perspective view showing a dispenser for carrying out the liquid crystal coating method for the liquid crystal display panel according to the present invention.

  A dispenser for manufacturing a liquid crystal display panel is configured so that a sealing material pattern or a liquid crystal layer can be formed on a substrate constituting the liquid crystal display panel, and a stage 12 that supports the substrate S is provided on the upper side of the frame 10. It has been.

  In this case, the stage 12 is configured to move slidably in the X-axis or Y-axis direction.

  In addition, a head support 14 is disposed above the stage 12 above the frame 10. The head support 14 is supported so that both sides of the head support 14 translate in the front-rear direction with respect to the frame 10.

  The head support 14 is provided with a dispenser head for applying a sealing material or liquid crystal to the substrate S disposed on the stage 12. The dispenser head is divided into a sealant application dispenser head 16 for applying a sealant and a liquid crystal application dispenser head 20 for applying a liquid crystal.

  FIG. 3 shows a structure in which a dispenser head 16 for applying a sealing material and a dispenser head 20 for applying a liquid crystal are respectively attached to one side and the other side of one head support base 14.

  The dispenser heads 16 and 20 are configured to be position-adjustable in the X-axis direction, the Y-axis direction, and the Z-axis direction in order to change the relative position between the nozzle from which the sealing material or liquid crystal is discharged and the substrate. It is desirable. In FIG. 3, since the head support 14 is movable in the Y-axis direction, the dispenser head is configured to be positionally adjustable in the X-axis direction and the Z-axis direction.

  The number and installation positions of the two dispenser heads 16 and 20 can be appropriately changed in consideration of the size of the substrate and the coating method.

  The configuration of the liquid crystal application dispenser head will be described below with reference to FIGS.

  FIG. 4 is a perspective view showing the main part of the liquid crystal coating apparatus according to the present invention. FIG. 5 shows a liquid crystal application state when the liquid crystal coating apparatus according to the present invention is used. 6 is a cross-sectional view taken along a line AA in FIG.

  Referring to FIG. 4, the liquid crystal application dispenser head 20 includes a syringe 30 in which liquid crystal is stored, and a nozzle mounting portion 21 to which a nozzle for discharging liquid crystal is mounted. The transfer mechanism 25 is configured to be movable in the vertical direction, that is, in the Z-axis direction.

  Here, if the syringe 30 can store a predetermined amount of liquid crystal, the liquid crystal nozzle 35 is configured integrally with the lower end portion of the syringe 30 or connected through a separate connecting means such as a liquid crystal pump as necessary. You may be comprised like doing.

  The drawing shows a configuration in which the syringe 30 and the liquid crystal nozzle 35 are integrated with the liquid crystal nozzle 35 inserted in the nozzle mounting portion 21.

  Here, the nozzle mounting portion 21 is a means for fixing the position of the liquid crystal nozzle 35, and is not a structure in which the liquid crystal nozzle 35 is directly attached, but a structure in which the liquid crystal nozzle is coupled or connected, that is, a syringe or the like. It may be a component configured such that a nozzle holder or the like can be attached.

  Such a nozzle mounting portion 21 includes a mounting block 23 into which the liquid crystal nozzle 35 is inserted, and a support plate 22 that is positioned in the vertical direction and supports the mounting block 23. The support plate 22 is connected to the vertical transfer mechanism 25 and is configured to move up and down.

  The vertical transfer mechanism 25 is a component configured to be able to move the nozzle mounting portion 21 in the vertical direction, that is, in the Z-axis direction. However, the vertical transfer mechanism 25 is not limited to this, and the nozzle mounting portion 21 can be configured to be movable in the Y-axis direction or the X-axis direction based on the implementation conditions.

  The vertical transfer mechanism 25 is used to adjust the vertical height of the liquid crystal nozzle from the substrate in accordance with the control signal path of the control mechanism 70 shown in FIG.

  The liquid crystal stored in the syringe 30 is discharged onto the substrate S through the liquid crystal nozzle 35, whereby the liquid crystal application dispenser head 20 is configured to apply the liquid crystal to the substrate S.

  In particular, the liquid crystal application dispenser head 20 of the present invention is provided with an ionizer 50 for ejecting ionized air to remove static electricity generated on the substrate before applying the liquid crystal to the substrate. . In this case, the ionization apparatus 50 can utilize an air fuzzy method.

  The nozzle mounting portion 21 is provided with an ionizer mounting portion 40 for mounting the ionizer nozzle 55.

  The ionizer mounting part 40 is provided in the mounting block 23. The ionizer mounting portion can be provided at an appropriate position on the front surface, the back surface, or both side surfaces of the mounting block 23. The position of the ionizer mounting portion 40 is preferably close to the liquid crystal nozzle 35 and attached to the front position in the moving direction of the liquid crystal nozzle 35, but the position is changed by setting the application direction of the liquid crystal. Can do.

  In the embodiment of the present invention, the ionizer mounting portion 40 is provided on the front surface of the mounting block 23.

  The ionization device mounting portion 40 may have any configuration as long as the end portion of the ionization device nozzle 55 can be fixed. In this embodiment, a block 41 having a nozzle insertion hole 42 (see FIG. 6) is additionally provided on the front surface of the mounting block 23, and the ionizer nozzle 55 is inserted into the nozzle insertion hole 42 and attached. .

  Further, the ionizer mounting part 40 is configured with a fixing device that stably fixes the ionizer nozzle 55 in a state where the ionizer nozzle 55 is inserted into the ionizer mounting part 40. As the fixing device, for example, a detent type fixing device as shown in FIG. 6 can be used.

  Specifically, a detent ball 45 and a detent spring 46 that urges the detent ball are inserted into a hole 43 formed in the side surface of the ionizer block 41, and Is formed with a detent groove 55 a for retaining the detent ball 45. Therefore, when the ionizer nozzle 55 is attached to the ionizer mounting portion 40, the ionizer nozzle 55 can be stably fixed in a state where the detent ball 45 is engaged with the detent groove 55a. On the other hand, when the ionizer nozzle 55 is separated from the ionizer mounting portion 40, the ionizer nozzle 55 can be easily separated from the ionizer mounting portion 40 only by lifting the ionizer nozzle 55 from above.

  It goes without saying that the detent spring 46 is urged by a plug bolt 47 provided on the rear side thereof.

  A method for applying liquid crystal using the liquid crystal application device of the liquid crystal display panel according to the present invention will be described below.

  First, referring to FIG. 3, the head support 14 is moved to a position where liquid crystal is applied while the substrate S is loaded on the stage 12. In this state, the liquid crystal nozzle 35 of the dispenser head 20 is lowered and arranged so as to be close to the substrate S.

  In this case, the liquid crystal ejection height of the liquid crystal nozzle 35 is such that the liquid crystal ejected from the liquid crystal nozzle does not drop onto the substrate in a drop shape but is applied in a state of being in contact with the substrate as shown in FIG. The liquid crystal nozzle 35 is disposed close to the substrate S.

  Conventionally, a dropping method in which liquid crystal is dropped onto the substrate from the liquid crystal nozzle 35 has been used. However, in the present invention, unlike the conventional dropping method, the liquid crystal discharged from the liquid crystal nozzle 35 with the liquid crystal nozzle 35 disposed as close as possible to the substrate S is in contact with the substrate along the moving direction of the nozzle. The height of the liquid crystal nozzle 35 from the substrate S is set and arranged so as to be applied in an extended state.

  Such height setting of the liquid crystal nozzle 35 can be appropriately set in consideration of the type, state (viscosity, etc.) of the liquid crystal, the application amount or the application form (application length or width). Such a control structure will be described later with reference to FIG.

  Thus, when the liquid crystal is discharged onto the substrate S with the liquid crystal nozzle 35 disposed at a height close to the substrate, when the liquid crystal applied to the substrate S is viewed from above, the applied liquid crystal has an elliptical shape. ing.

  Then, as shown in FIGS. 7 and 8, it is preferable to sequentially apply the liquid crystals so that the liquid crystals applied in an elliptical shape to the substrate S are arranged at regular intervals.

  In the present invention, the liquid crystal is applied while the liquid crystal nozzle 35 moves by a certain distance in a state where the liquid crystal is in contact with the substrate without using the dropping method of dropping the liquid crystal onto the substrate as described above. When the coating is applied, the alignment film formed on the substrate is damaged, and problems such as deterioration in display quality are solved, and a display panel having better display performance can be manufactured.

  On the other hand, FIG. 9 shows a state in which liquid crystal is applied using the ionization apparatus 50 shown in FIGS. In FIG. 9, the elliptical liquid crystal is applied to the substrate as described above in a state where static electricity is removed from the substrate using the ionization device 50 before the liquid crystal is applied.

  Thus, when ionized air is sprayed onto the substrate using the ionization device 50 at a position before the liquid crystal is applied, the problem that the static electricity of the substrate is removed and the liquid crystal application failure occurs is solved, and the spot phenomenon Can be prevented from occurring.

  FIG. 10 is a block diagram showing a control structure of a liquid crystal coating apparatus for realizing the above-described liquid crystal coating method according to the present invention.

  The control structure of the liquid crystal coating apparatus according to the present invention will be described below with reference to FIG.

  The liquid crystal coating device according to the present invention is controlled by the control mechanism 70 so that the liquid crystal discharged from the liquid crystal nozzle 35 is not dropped on the substrate in a drop shape but is applied in an elliptical shape in contact with the substrate. The liquid crystal is applied to the substrate with the height set appropriately.

  The control mechanism 70 is configured to be able to appropriately adjust the height of the liquid crystal nozzles by controlling the vertical transfer mechanism 25 shown in FIG. That is, the control mechanism 70 controls the vertical transfer mechanism 25, and the liquid crystal ejected from the liquid crystal nozzle 35 is in an elliptical state in contact with the substrate based on the type, state, coating amount, or coating form of the liquid crystal applied to the substrate. The application height of the liquid crystal nozzle 35 can be adjusted so as to be applied in a shape.

  Such a control mechanism 70 is a height setting table configured to determine the application height of the liquid crystal nozzle 35 based on at least one of the type, state, application amount, and application form of the liquid crystal applied to the substrate. A data storage unit 73, a selection input unit 71 configured to select and input the type, state, application amount, and application form of the liquid crystal to be applied to the substrate by the operator, and the input of the selection input unit 71 After determining the height of the liquid crystal nozzle 35 using the information of the height setting table stored in the data storage unit 73 according to the signal, a signal is output to the vertical transfer mechanism 25 to control the height of the liquid crystal nozzle 35. And an output control unit 75.

  Here, in the height setting table of the data storage unit 73, when the type, state, application amount, application form, and the like of the liquid crystal change, the liquid crystal is not dropped on the substrate in accordance with the change, but in contact with the substrate. This is a control program configured to arrange the liquid crystal nozzles 35 at a height enough to be applied in an elliptical shape.

  That is, as described above, the liquid crystal is not dropped in a droplet shape, and in order to apply the liquid crystal to the substrate, the liquid crystal should be ejected at a position where the height of the liquid crystal nozzle 35 is as close as possible to the substrate. . On the other hand, when the liquid crystal nozzle 35 is positioned too close to the substrate, the liquid crystal application state is deteriorated, the movement of the liquid crystal nozzle 35 is not smooth, and in the worst case, the substrate is damaged. Accordingly, even when the liquid crystal nozzle 35 is disposed sufficiently away from the substrate, it is required to set an optimum height at which the liquid crystal can be applied while being in contact with the substrate.

  The height setting table is configured so that the optimum height of the liquid crystal nozzle 35 can be set in accordance with the change of the liquid crystal state or the like.

  The height setting table confirms the discharge state and application state of the liquid crystal when the type, state, application amount, application form, etc. of the liquid crystal change through several experiments, and is set with the optimum value based on the experimental result. Has been. Here, since the state of the liquid crystal applied to the substrate changes depending on the composition, viscosity, ambient temperature, etc. of the liquid crystal, the type and state of the liquid crystal are considered as setting variables in the table. The application amount and the application form are considered as setting variables of the table because the state of the liquid crystal applied to the substrate changes as the size or discharge pressure of the nozzle, the liquid crystal application length, etc. are changed. . In addition to this, other factors that are variables when the liquid crystal nozzle 35 is positioned at such a height that the liquid crystal is not dripped onto the substrate but applied to the substrate while being attached to the substrate are taken into consideration. Needless to say, the height setting table can be configured.

  The selection input unit 71 is a part for the operator to directly input the type of liquid crystal, the viscosity of the liquid crystal, or the discharge temperature, the size of the discharge port of the liquid crystal nozzle, and the like according to the table setting variable. Conditions can also be configured to be input.

  On the other hand, if the liquid crystal state applied to the substrate can be automatically measured, the selection input unit 71 or the data storage unit 73 is not necessarily required. In this case, the automatic measurement unit immediately outputs the output. A signal can be input to the control unit 75 to determine the height of the liquid crystal nozzle 35.

  As an example of the automatic measurement unit, the substrate of the liquid crystal nozzle 35 is applied in a state where the discharge state of the liquid crystal discharged from the liquid crystal nozzle 35 is observed with a photo sensor or the like and the discharged liquid crystal is continuously in contact with the substrate. It is also possible to apply a method in which after searching for the maximum height or the appropriate height, the data is converted into data and the height of the liquid crystal nozzle 35 is determined and controlled.

  In addition to the method described above, it is also possible to perform a passive measurement by an operator. That is, the operator can set the discharge height of the liquid crystal nozzle 35 appropriately by directly viewing the state in which the liquid crystal is discharged from the liquid crystal nozzle 35.

  On the other hand, it is preferable to provide a nozzle position sensing mechanism 60 that senses the height of the liquid crystal nozzle 35 from the substrate and inputs it to the output control unit 75 so that feedback control can be performed when the height of the liquid crystal nozzle 35 is set.

  Such a nozzle position sensing mechanism 60 can be configured in the mounting block 23 shown in FIG.

It is the schematic which showed the liquid crystal application structure of the prior art. It is the top view which showed the liquid crystal application state of the prior art. It is the perspective view which showed the dispenser provided with the liquid-crystal coating device which concerns on this invention. It is the perspective view which showed the principal part of the liquid-crystal coating device which concerns on this invention. It is the figure which showed the state which apply | coats a liquid crystal using the liquid-crystal coating device which concerns on this invention. It is sectional drawing which showed the AA line direction of FIG. It is the schematic for demonstrating the liquid-crystal coating method which concerns on this invention. It is the top view which showed the board | substrate apply | coated by the liquid-crystal coating method which concerns on this invention. It is the schematic for demonstrating the liquid-crystal coating method which concerns on the other Example of this invention. It is the block diagram which showed the control mechanism comprised in the liquid-crystal coating device which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Frame 12 Stage 14 Head support stand 16 Dispenser head for sealing material application 20 Dispenser head for liquid crystal application 21 Nozzle mounting portion 23 Mounting block 25 Vertical transfer mechanism 30 Syringe 35 Liquid crystal nozzle 40 Ionizing device mounting portion 41 Ionizing device block 42 Nozzle insertion hole 43 hole 45 detent ball 46 detent spring 47 plug bolt 50 ionizer 55 ionizer nozzle 55a detent groove 70 control mechanism

Claims (11)

A first stage in which a nozzle for discharging liquid crystal is positioned close to the substrate at a height at which the liquid crystal can be applied to the top of the substrate;
A second step of applying the liquid crystal by discharging the liquid crystal onto the substrate while moving the nozzle, and applying the liquid crystal while applying the nozzle so that the liquid crystal applied to the substrate has a long oval shape;
The liquid crystal coating method of the liquid crystal display panel characterized by implementing.   In the first step, the height of the liquid crystal applied to the nozzle is such that the liquid crystal discharged from the nozzle is not dropped onto the substrate in a drop shape and can be applied while being attached to the substrate. The liquid crystal coating method according to claim 1, wherein:   2. The liquid crystal coating method according to claim 1, wherein in the second stage, the elliptical liquid crystal applied to the substrate is applied at predetermined intervals.   4. The method according to claim 1, wherein the second step proceeds while removing static electricity using an ionizer before applying liquid crystal in front of the moving direction of the nozzle. 5. The liquid crystal coating method as described. A dispenser head positioned on top of the substrate;
A nozzle that is provided in the dispenser head and that discharges liquid crystal to apply liquid crystal to the substrate;
A control mechanism for controlling the position of the nozzle so that the liquid crystal discharged from the nozzle is applied in a long elliptical shape while being applied to the substrate without being dropped on the substrate.
A liquid crystal coating apparatus for a liquid crystal display panel, comprising: The dispenser head includes a vertical transfer mechanism configured to adjust a vertical height of the nozzle from the substrate according to a control signal of the control mechanism,
The control mechanism is configured to control the vertical transfer mechanism so that the height of the nozzle can be adjusted according to the type, state, application amount, and application form of liquid crystal applied to the substrate. 5. A liquid crystal coating apparatus according to 5. The control mechanism is
A data storage unit having a height setting table configured to be able to determine the application height of the nozzle based on at least one of the type, state, application amount, and application form of the liquid crystal applied to the substrate;
A selection input unit configured to allow an operator to select and input the type, state, application amount, and application form of the liquid crystal to be applied to the substrate;
After determining the nozzle height using the information of the height setting table stored in the data storage unit according to the input signal of the selection input unit, a signal is output to the vertical transfer mechanism to set the nozzle height. An output controller to control;
The liquid crystal coating apparatus according to claim 6, further comprising:   8. The ionizer for removing static electricity by blowing ionized air to a substrate on a front side in a direction in which the nozzle moves is provided in the dispenser head. A liquid crystal coating apparatus according to claim 1. A dispenser head positioned on top of the substrate;
A nozzle which is provided in the dispenser head and which is supplied with liquid crystal from a syringe and discharges it;
An ionizer that is provided in the dispenser head and blows ionized air from the front side in the direction in which the nozzle moves to the substrate to remove static electricity;
A liquid crystal coating apparatus for a liquid crystal display panel, comprising: The dispenser head includes a nozzle mounting portion to which the nozzle is attached,
The liquid crystal coating apparatus according to claim 9, wherein the nozzle mounting portion is provided with an ionization device mounting portion to which a nozzle of the ionization device is mounted.   The liquid crystal coating apparatus according to claim 10, wherein a fixing device for fixing an ionizer nozzle is provided in the ionizer mounting portion.