JP2010217669A - Method for manufacturing liquid crystal display apparatus and inkjet coating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a liquid crystal display apparatus for effectively preventing irregularity due to spacer particles and an inkjet coating device. <P>SOLUTION: In addition to ordinary spacer particles 111, spacer particles 112 of a larger diameter, spacer particles 113 of a smaller diameter, spacer particles 114 of larger elasticity, spacer particles 115 of smaller elasticity, and the like are disposed between transparent substrates 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a liquid crystal display device and an ink jet coating apparatus that form a gap for enclosing a liquid crystal layer by interposing spacer particles between substrates.

  The liquid crystal display device has a configuration in which a transparent electrode, a color filter, and a black matrix are disposed between two substrates, and liquid crystal is sealed in a space between the transparent electrodes. At this time, a spacer is formed in order to regulate the distance between the two substrates and make the thickness of the liquid crystal layer appropriate.

  Conventionally, this spacer has been formed by using a photolithographic method. However, there is a problem that a process using a mask is required and the work process is complicated, and the use efficiency of the material is poor. For this reason, a method of manufacturing a liquid crystal display device in which spacers are formed with spacer particles by discharging a spacer particle dispersion liquid in which spacer particles are dispersed by an inkjet method on a substrate has been proposed (see Patent Document 1).

JP 2005-4094 A

  In such a method of manufacturing a liquid crystal display device, an ink jet coating device is used. That is, an inkjet head unit in which a plurality of inkjet heads having a large number of ink discharge ports are arranged in a row is moved relative to a transparent substrate for a liquid crystal display device, and spacer particles are dispersed from the inkjet head to the transparent substrate. By discharging the spacer particle dispersion liquid, a spacer region containing spacer particles is formed on the surface of the transparent substrate.

  By the way, in such an ink jet coating apparatus, subtle variations occur in the amount of droplets and the discharge speed of the spacer particle dispersion discharged from the discharge ports of the respective ink jet heads. And since this variation is repeated with good reproducibility, a regular variation occurs in the gap between the transparent substrates, and the finally manufactured liquid crystal display device has regularity due to the spacer particles visually confirmed. There is a problem that unevenness occurs.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a method of manufacturing a liquid crystal display device and an ink jet coating apparatus capable of effectively preventing unevenness due to spacer particles.

  According to the first aspect of the present invention, after a spacer particle dispersion liquid in which spacer particles are dispersed by an ink jet method is discharged onto a substrate to form a spacer region containing spacer particles, the substrate is dried to obtain a spacer particle dispersion liquid. A method of manufacturing a liquid crystal display device that forms a gap for enclosing a liquid crystal layer by interposing the spacer particles between the substrates by evaporating volatile components from the substrate and fixing the spacer particles and the substrate in the spacer region, The spacer particle dispersion has a plurality of types of spacer particles having different diameters.

  The invention according to claim 2 is the invention according to claim 1, wherein the spacer particle dispersion has a difference between a spacer particle having a normal diameter for forming the gap and a diameter of the spacer particle having the normal diameter. It has 3 or more types of spacer particles with 2 or more types of spacer particles having an average diameter within 0.2 μm.

  The invention according to claim 3 is the invention according to claim 2, wherein the spacer particle dispersion has a ratio of spacer particles having a normal diameter for the gap formation of 45% to 60%, The ratio of the two or more kinds of spacer particles having an average diameter within 0.2 μm in difference from the diameter of the spacer particles was 40 to 55% in total.

  According to a fourth aspect of the present invention, after a spacer particle dispersion liquid in which spacer particles are dispersed by an ink jet method is discharged onto a substrate to form a spacer region containing spacer particles, the substrate is dried to obtain a spacer particle dispersion liquid. A method of manufacturing a liquid crystal display device that forms a gap for enclosing a liquid crystal layer by interposing the spacer particles between the substrates by evaporating volatile components from the substrate and fixing the spacer particles and the substrate in the spacer region, The spacer particle dispersion has a plurality of types of spacer particles having different elastic moduli.

  According to a fifth aspect of the present invention, in the invention of the fourth aspect, the spacer particle dispersion includes spacer particles having normal elastic modulus for forming the gap, spacer particles having the normal elastic modulus, and elastic modulus. It has 3 or more types of spacer particles with 2 or more types of different spacer particles.

  The invention according to claim 6 is the invention according to claim 5, wherein the spacer particle dispersion has a ratio of spacer particles having a normal elastic modulus for forming the gap of 45% to 60%, and the normal elasticity. The ratio of two or more types of spacer particles having a diameter different from that of the spacer particles of the ratio was set to the remaining 40% to 55%.

  The invention according to claim 7 is a spacer in which spacer particles are dispersed on a substrate by an ink jet method in order to form a gap for enclosing a liquid crystal layer by interposing spacer particles between the substrates at the time of manufacturing a liquid crystal display device. An inkjet coating apparatus for forming a spacer region containing spacer particles by applying a particle dispersion, the inkjet head including a moving mechanism that moves a substrate in one direction relative to the inkjet head unit. The unit includes a plurality of inkjet heads arranged in a direction intersecting with the moving direction of the substrate moved by the moving mechanism, in a direction intersecting with the moving direction of the substrate. The spacer particle dispersion is discharged onto the substrate moved by the moving mechanism. A spacer particle dispersion liquid is applied to the surface of a plate, and a spacer particle dispersion liquid storage section storing a spacer particle dispersion liquid having a plurality of types of spacer particles having different diameters; and the inkjet from the spacer particle dispersion liquid storage section And a spacer particle dispersion liquid feeding mechanism for feeding the spacer particle dispersion liquid to the head.

  The invention according to claim 8 is a spacer in which spacer particles are dispersed on a substrate by an ink jet method in order to form a gap for enclosing a liquid crystal layer by interposing spacer particles between the substrates at the time of manufacturing a liquid crystal display device. An inkjet coating apparatus for forming a spacer region containing spacer particles by applying a particle dispersion, the inkjet head including a moving mechanism that moves a substrate in one direction relative to the inkjet head unit. The unit includes a plurality of inkjet heads arranged in a direction intersecting with the moving direction of the substrate moved by the moving mechanism, in a direction intersecting with the moving direction of the substrate. The spacer particle dispersion is discharged onto the substrate moved by the moving mechanism. A spacer particle dispersion is applied to the surface of the plate, and a spacer particle dispersion reservoir that stores spacer particle dispersions having a plurality of types of spacer particles having different elastic moduli, and the spacer particle dispersion reservoir from the above A spacer particle dispersion liquid feeding mechanism for feeding the spacer particle dispersion liquid to the ink jet head is provided.

  According to the first to eighth aspects of the invention, it is possible to effectively prevent unevenness due to the spacer particles.

It is a partial surface view which shows a part of transparent substrate 1 after spacer particle dispersion liquid is discharged to the surface. 1 is a perspective view of an ink jet coating apparatus according to the present invention. It is the perspective view which looked at the gantry 13 from the lower surface. It is the perspective view which looked at the inkjet head unit 12 from the lower surface. FIG. 3 is a perspective view of a part of the inkjet head 18 as viewed from the lower surface. 3 is a perspective view showing a moving mechanism of the inkjet head unit 12. FIG. 3 is an explanatory diagram showing the relationship between the pitch of the black matrix 7 on the transparent substrate 1 and the arrangement of the ejection openings 19 for the spacer particle dispersion in the inkjet head 18. It is a block diagram which shows the structure which liquid-feeds a spacer particle dispersion liquid. It is explanatory drawing which shows typically the state by which spacer particle | grains are arrange | positioned between a pair of transparent substrates.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, a spacer region containing spacer particles is formed by applying a spacer particle dispersion liquid in which spacer particles are dispersed by an ink jet method on a substrate to form a gap for enclosing a liquid crystal layer. A method for manufacturing a liquid crystal display device using an inkjet coating apparatus will be described.

  FIG. 1 is a partial surface view showing a part of the transparent substrate 1 after the spacer particle dispersion is discharged onto the surface.

  This method of manufacturing a liquid crystal display device is executed as a pre-process such as a liquid crystal encapsulation process, and is for forming a gap for encapsulating a liquid crystal layer by interposing spacer particles between transparent substrates. .

  When this liquid crystal display device manufacturing method is executed, a spacer region generation step is first executed. In this spacer region generating step, a spacer region containing spacer particles is formed by discharging a spacer particle dispersion liquid in which spacer particles are dispersed by an inkjet method on a transparent substrate. At this time, the ink jet coating apparatus according to the present invention for discharging the spacer particle dispersion liquid onto the surface of the transparent substrate by moving the ink jet head unit in which a large number of ink jet heads are arranged relative to the transparent substrate 1 is used. Is done.

  On the surface of the transparent substrate 1, a red color filter region R, a green color filter region G, a blue color filter region B, which are pixel regions, and a black matrix that partitions these pixel regions, respectively. 7 is configured. Then, the spacer particle dispersion is discharged toward the black matrix 7, and the spacer region 5 is formed there.

  Subsequent to the spacer region generation step, a drying step is performed. In this drying process, the transparent substrate 1 is transported to a hot plate, and the transparent substrate 1 is heated on the hot plate, thereby evaporating volatile components from the spacer particle dispersion and transferring the spacer particles in the spacer region 5 to the transparent substrate. 1 is a process of fixing to 1.

  In this step, since the volatile components are first evaporated from the spacer particle dispersion, the spacer particles in the spacer region 5 gather together and come into contact with each other due to surface tension. Then, they are baked and fixed to each other, and are also fixed to the surface of the transparent substrate 1 with a strong force. Therefore, a gap for encapsulating the liquid crystal layer can be formed by the spacer particles in the spacer region 5.

  Next, the configuration of the ink jet coating apparatus according to the present invention will be described. FIG. 2 is a perspective view of the ink jet coating apparatus according to the present invention.

  The inkjet coating apparatus includes a table 11 that supports the transparent substrate 1 and a gantry 13 that supports 12 inkjet head units 12. The table 11 is driven by a linear motor 15 disposed on a base 14 and is guided by a pair of guide members 16 in a main scanning direction perpendicular to the direction in which the inkjet head units 12 are arranged in the gantry 13. Move back and forth. For this reason, a spacer region containing spacer particles is formed on the transparent substrate 1 by discharging the spacer particle dispersion from the 12 inkjet head units 12 while moving the table 11 on which the transparent substrate 1 is placed in the main scanning direction. can do.

  A pair of linear motors 21 are disposed at both ends of the gantry 13, and the gantry 13 is supported on the base 14 via these linear motors 21. For this reason, the gantry 13 is configured to be able to change the crossing angle of the table 11 with the transport direction of the transparent substrate 1 by individually driving these linear motors 21.

  A cleaning unit 22 that cleans the inkjet head unit 12 is disposed at one end of the base 14. The cleaning unit 22 can reciprocate in a direction orthogonal to the transport direction of the transparent substrate 1 by the table 11. Further, twelve drying prevention units 23 for preventing the inkjet head unit 12 from drying are disposed along the movement path of the cleaning unit 22. Each inkjet head 18 to be described later is disposed so as to face these drying prevention units 23 during standby.

  FIG. 3 is a perspective view of the gantry 13 as seen from its lower surface. FIG. 4 is a perspective view of the inkjet head unit 12 as viewed from the lower surface. Further, FIG. 5 is a perspective view of a part of the inkjet head 18 as viewed from the lower surface thereof.

  As shown in these drawings, the 12 inkjet head units 12 supported by the gantry 13 are provided with a head support plate 17, and the 5 inkjet heads 18 are provided on the head support plate 17. It is arranged. As shown in FIG. 5, the inkjet head 18 has a large number of spacer particle dispersion outlets 19 arranged in one direction.

  FIG. 6 is a perspective view showing a moving mechanism of the inkjet head unit 12. In this figure, only one of the twelve inkjet head units 12 is shown.

  At both ends of the gantry 13 in the transport direction of the transparent substrate 1, a linear guide 24, a linear scale 25, and a linear motor 26 are arranged with the longitudinal direction thereof intersecting with the transport direction of the transparent substrate 1. Has been. A mover of a linear motor 26 (not shown) is disposed on the lower surface of the support plate 27 that supports the inkjet head unit 12.

  For this reason, each support plate 27 is moved in a direction intersecting the transport direction of the transparent substrate 1 by driving the linear motor 26 with its both ends being guided by the linear guide 24. The movement amount is measured by the linear scale 25. Therefore, the pitch of the inkjet head unit 12 is changed by moving each inkjet head unit 12 by a set movement amount in a direction intersecting the transport direction of the transparent substrate 1 by the moving mechanism of the inkjet head unit 12. It becomes possible.

  As described above, the gantry 13 is configured to be able to change the intersection angle of the table 11 with the transport direction of the transparent substrate 1 by individually driving the pair of linear motors 21. Then, by changing the angle of the gantry 13, the angle of the inkjet head unit 12 supported by the gantry 13 is also changed, and accordingly, the spacer particle dispersion in the inkjet head 18 disposed in the inkjet head unit 12 is changed. The crossing angle between the direction in which the liquid discharge ports 19 are arranged and the transport direction of the transparent substrate 1 is changed.

  As described above, a configuration is adopted in which the pitch of the inkjet head unit 12 and the crossing angle between the direction in which the ejection openings 19 of the spacer particle dispersion liquid 19 in the inkjet head 18 are arranged and the transport direction of the transparent substrate 1 are changed. The reason is as follows.

  FIG. 7 is an explanatory diagram showing the relationship between the pitch of the black matrix 7 on the transparent substrate 1 and the arrangement of the ejection openings 19 for the spacer particle dispersion in the inkjet head 18.

  The pitch of the black matrix 7 varies depending on the type of liquid crystal display device, its manufacturer, and the like. In order to cope with such a pitch of the black matrix 7, as shown in FIG. 7, the intersection angle between the arrangement direction of the discharge ports 19 of the spacer particle dispersion liquid in the inkjet head 18 and the transport direction of the transparent substrate 1 is changed. do it. In order to adjust the pitch of the spacer particle dispersion discharge ports 19 between the plurality of inkjet heads 18, the distance between the inkjet head units 12 may be changed between the adjacent inkjet head units 12. For this reason, this inkjet coating apparatus employs a configuration in which the pitch of the inkjet head unit 12 and the intersecting angle between the gantry 13 and the transport direction of the transparent substrate 1 are changed.

  FIG. 8 is a block diagram showing a configuration for feeding a spacer particle dispersion in the above-described inkjet coating apparatus.

  In the spacer particle dispersion reservoir 51, spacer particle dispersion to be applied to the transparent substrate 1 is stored. The spacer particle dispersion liquid stored in the spacer particle dispersion storage part 51 is fed to the inkjet head 18 of the inkjet head unit 12 using a spacer particle dispersion liquid feeding mechanism 52 equipped with a liquid feed pump or the like. From there, it is applied onto the transparent substrate 1.

  In the first embodiment of the present invention, the spacer particle dispersion liquid stored in the spacer particle dispersion storage part 51 has a plurality of types of spacer particles having different diameters. Preferably, the spacer particle dispersion liquid stored in the spacer particle dispersion storage part 51 has a diameter of the normal diameter spacer particles in addition to the normal diameter spacer particles for forming a gap between the transparent substrates 1. It has 3 or more types of spacer particles including 2 or more types of spacer particles having an average diameter within a difference of 0.2 μm. For example, when the normal diameter of the spacer particles is 4 μm, two or more types of spacer particles having an average diameter of about 3.8 μm to 4.2 μm may be included.

  At this time, the spacer particle dispersion preferably has an average diameter in which the ratio of spacer particles having a normal diameter for gap formation is 45% to 60%, and the difference from the diameter of the spacer particles having a normal diameter is within 0.2 μm. It is preferable that the ratio of the two or more kinds of spacer particles having the remaining amount is 40% to 55% in total.

  In the second embodiment of the present invention, the spacer particle dispersion stored in the spacer particle dispersion storage section 51 has a plurality of types of spacer particles having different elastic moduli. Preferably, the spacer particle dispersion liquid stored in the spacer particle dispersion storage part 51 is not limited to the normal elastic spacer particles for forming a gap between the transparent substrates 1 and the normal elastic spacer particles and the elastic particles. It has 3 or more types of spacer particles including 2 or more types of spacer particles having different rates.

  At this time, the spacer particle dispersion preferably has a ratio of the normal elastic spacer particles for gap formation of 45% to 60%, and a ratio of two or more kinds of spacer particles having elasticity different from that of the normal elastic spacer particles. The remaining 40% to 55% is preferable.

  Furthermore, in the third embodiment of the present invention, the spacer particle dispersion stored in the spacer particle dispersion storage section 51 has a plurality of types of spacer particles having different diameters and elastic moduli. The values of the diameter and the elastic modulus at this time are the same as those in the first and second embodiments described above. In this case, the ratio of the normal diameter and the normal elastic spacer particles for forming the gap may be 40% to 55%, and the remaining may be a plurality of types of spacer particles having different diameters and elastic moduli.

  In any of the first, second, and third embodiments, the spacer particle dispersion liquid including a plurality of types of spacer particles is stored in the storage unit 51 in advance. Then, the spacer particle dispersion liquid containing a plurality of types of spacer particles stored in the storage section 51 is used for the ink jet head 18 of the ink jet head unit 12 using the spacer particle dispersion liquid feed mechanism 52 equipped with a liquid feed pump or the like. The solution is fed to the transparent substrate 1 from there.

  When the spacer particle dispersion is applied to the transparent substrate 1 using the ink jet coating apparatus having the above-described configuration, the transparent substrate 1 is first positioned and fixed on the table 11. Further, in correspondence with the pitch of the black matrix 7 in the transparent substrate 1, the intersection angle between the arrangement direction of the ejection openings 19 of the spacer particle dispersion liquid in the inkjet head 18 and the transport direction of the transparent substrate 1, and the inkjet head unit 12 Change the pitch.

  In this state, the spacer particle dispersion is discharged from each of the inkjet heads 18 in the 12 inkjet head units 12 while moving the table 11 together with the transparent substrate 1 in the main scanning direction. A spacer region containing spacer particles can be formed.

  FIG. 9 is an explanatory view schematically showing a state in which spacer particles are arranged between a pair of transparent substrates 1.

  FIG. 9A shows the first embodiment described above. In FIG. 9A, spacer particles 112 having a large diameter and spacer particles 113 having a small diameter are disposed between the transparent substrates 1 in addition to the spacer particles 111 having a normal diameter and a normal elasticity. FIG. 9B shows the second embodiment described above. In FIG. 9B, spacer particles 114 having a large elasticity and spacer particles 115 having a small elasticity are arranged between the transparent substrates 1 in addition to the spacer particles 111 having a normal diameter and a normal elasticity. FIG. 9C shows the case of the third embodiment described above.

  When any one of the first, second, and third embodiments is adopted, random variation occurs in the gap between the transparent substrates 1 formed by the spacer particles. For this reason, it becomes possible to eliminate irregularities with regularity.

  That is, the non-uniformity that has conventionally occurred is caused by repetitive subtle variations due to the amount of droplets of the spacer particle dispersion liquid discharged from the discharge port 19 of each inkjet head 18 and the discharge speed. is there. On the other hand, even when any of the first, second, and third embodiments described above is adopted, the variation in gap unevenness between the transparent substrates 1 is caused by the action of the plurality of types of spacer particles. Diffused throughout. For this reason, the unevenness is not recognized visually.

  That is, in the present invention, when the transparent substrate 1 is observed based on the idea that the gap between the transparent substrates 1 is not uniformized in the entire liquid crystal substrate 1 but the nonuniformity of the gaps between the transparent substrates 1 is error-diffused. The whole is averaged, and it is possible to prevent the occurrence of unevenness caused by visual observation.

  In the above-described embodiment, the spacer particle dispersion is ejected by the 12 inkjet head units 12 while moving the table 11 on which the transparent substrate 1 is placed in the main scanning direction, so that the spacer particles are applied to the transparent substrate 1. However, the present invention is not limited to this. That is, the table 11 on which the transparent substrate 1 is placed is stopped, and the spacer particle dispersion is discharged by the inkjet head unit 12 while moving the gantry 13 supporting the 12 inkjet head units 12 in the main scanning direction. You may employ | adopt the structure which forms the spacer area | region which contains spacer particle | grains in the transparent substrate 1. FIG.

DESCRIPTION OF SYMBOLS 1 Transparent substrate 5 Spacer area 7 Black matrix 11 Table 12 Inkjet head unit 13 Gantry 14 Base 15 Linear motor 16 Guide member 17 Head support plate 18 Inkjet head 19 Discharge port 21 Linear motor 22 Cleaning unit 23 Drying prevention unit 24 Linear guide 25 Linear scale 26 Linear motor 111 Spacer particle 112 Spacer particle 113 Spacer particle 114 Spacer particle 115 Spacer particle

Claims (8)

After forming a spacer region containing spacer particles by discharging a spacer particle dispersion in which spacer particles are dispersed by an inkjet method on a substrate, the substrate is dried to evaporate volatile components from the spacer particle dispersion, and A method of manufacturing a liquid crystal display device in which a spacer particle is interposed between substrates by forming spacer particles and a substrate in a spacer region to form a gap for enclosing a liquid crystal layer,
The method for producing a liquid crystal display device, wherein the spacer particle dispersion has a plurality of types of spacer particles having different diameters. In the manufacturing method of the liquid crystal display device of Claim 1,
The spacer particle dispersion includes a spacer particle having a normal diameter for forming the gap, and two or more kinds of spacer particles having an average diameter within 0.2 μm of a difference between the diameters of the spacer particles having the normal diameter. A method for producing a liquid crystal display device having three or more kinds of spacer particles. In the manufacturing method of the liquid crystal display device of Claim 2,
In the spacer particle dispersion, the ratio of spacer particles having a normal diameter for forming the gap is 45% to 60%, and the difference from the diameter of the spacer particles having the normal diameter is 2 μm or less. A method for manufacturing a liquid crystal display device, wherein the ratio of the spacer particles of at least seeds is 40% to 55% in total. After forming a spacer region containing spacer particles by discharging a spacer particle dispersion in which spacer particles are dispersed by an inkjet method on a substrate, the substrate is dried to evaporate volatile components from the spacer particle dispersion, and A method of manufacturing a liquid crystal display device in which a spacer particle is interposed between substrates by forming spacer particles and a substrate in a spacer region to form a gap for enclosing a liquid crystal layer,
The method for producing a liquid crystal display device, wherein the spacer particle dispersion has a plurality of types of spacer particles having different elastic moduli. In the manufacturing method of the liquid crystal display device of Claim 4,
The spacer particle dispersion has three or more types of spacer particles, which are spacer particles having a normal elastic modulus for forming the gap and two or more types of spacer particles having a different elastic modulus from the spacer particles having the normal elastic modulus. A method for manufacturing a liquid crystal display device. In the manufacturing method of the liquid crystal display device of Claim 5,
In the spacer particle dispersion, the ratio of spacer particles having a normal elastic modulus for forming the gap is 45% to 60%, and the ratio of two or more types of spacer particles having a diameter different from that of the spacer particles having a normal elastic modulus is used. , A manufacturing method of a liquid crystal display device with the remaining 40% to 55% in total. In order to form a gap for encapsulating the liquid crystal layer by interposing spacer particles between the substrates at the time of manufacturing the liquid crystal display device, by applying a spacer particle dispersion liquid in which the spacer particles are dispersed by an inkjet method on the substrate, An inkjet coating apparatus for forming a spacer region including spacer particles,
A moving mechanism for moving the substrate in one direction relative to the inkjet head unit;
In the inkjet head unit, a plurality of spacer particle dispersion discharge ports are arranged in a direction intersecting with the moving direction of the substrate moved by the moving mechanism in a direction intersecting the moving direction of the substrate. A plurality of arrays arranged in a row, the spacer particle dispersion is discharged onto the substrate moved by the moving mechanism, and the spacer particle dispersion is applied to the surface of the substrate,
A spacer particle dispersion storage section for storing a spacer particle dispersion having a plurality of types of spacer particles having different diameters;
A spacer particle dispersion feeding mechanism for feeding a spacer particle dispersion from the spacer particle dispersion reservoir to the inkjet head;
An ink jet coating apparatus comprising: In order to form a gap for encapsulating the liquid crystal layer by interposing spacer particles between the substrates at the time of manufacturing the liquid crystal display device, by applying a spacer particle dispersion liquid in which the spacer particles are dispersed by an inkjet method on the substrate, An inkjet coating apparatus for forming a spacer region including spacer particles,
A moving mechanism for moving the substrate in one direction relative to the inkjet head unit;
In the inkjet head unit, a plurality of spacer particle dispersion discharge ports are arranged in a direction intersecting with the moving direction of the substrate moved by the moving mechanism in a direction intersecting the moving direction of the substrate. A plurality of arrays arranged in a row, the spacer particle dispersion is discharged onto the substrate moved by the moving mechanism, and the spacer particle dispersion is applied to the surface of the substrate,
A spacer particle dispersion storage part for storing a spacer particle dispersion having a plurality of types of spacer particles having different elastic moduli;
A spacer particle dispersion feeding mechanism for feeding a spacer particle dispersion from the spacer particle dispersion reservoir to the inkjet head;
An ink jet coating apparatus comprising: