KR101939456B1 - Coating system for 3d substrate - Google Patents

Abstract

The present invention relates to a coating system for a three-dimensional substrate, wherein a coating system for a three-dimensional substrate according to the present invention comprises a plate-like jig on which a three-dimensional substrate is placed and a hollow is formed beneath the substrate, A coating module for spraying a coating liquid, a supporting surface formed with a seating surface corresponding to the shape of the substrate and inserted into the hollow below the jig to support the substrate through the seating surface, A vacuum hole passing through the seating surface for adsorbing the substrate, a stage for moving the substrate in the back and forth direction and coating the substrate through the coating module, and a driving unit for moving the stage.

Description

[0001] COATING SYSTEM FOR 3D SUBSTRATE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating system for a three-dimensional substrate, and more particularly, to a coating system for a three-dimensional substrate that performs coating on a surface of a three-dimensional substrate such as an edge type smartphone display substrate.

Coating processes are indispensable not only in traditional industries such as automobiles and construction but also in manufacturing processes for displays and solar cells. Particularly, in the manufacture of displays such as organic solar cells and organic light emitting diodes (OLED), precise coatings of tens to hundreds of nanometers in thickness are required. In addition, since the roughness and uniformity of the coated surface have a great influence on the performance of the product, ultrafine droplets must be available, and a large amount of liquid must be rapidly coated in view of productivity.

Recently, as application of touch screen has been expanded, Anti-Fingerprint Coating or Anti-Reflecting Coating applied to the surface of touch window substrate of smart phone, tablet, But is being converted into a coating using a wet process.

In addition, in recent years, the shape of the display substrate is not limited to the plane, but an edge type substrate bent to have both edges bent in a three-dimensional shape has been commercialized.

When coating a conventional planar substrate, a coating process is performed by transporting a plate-shaped jig on which a planar substrate is placed by a transporting unit of a rotating roller system, and spraying a coating liquid through a nozzle at the top.

However, as described above, when a three-dimensional substrate having a three-dimensional shape is placed on a jig in the same manner as a planar substrate and a jig is transported by the transfer unit and a coating process is performed, The position of the substrate is not fixed, so that the coating can not be uniformly performed, and the coating is performed on the rear surface where coating is unnecessary.

In order to solve such a problem, a jig having a protruding support portion for mounting a three-dimensional substrate according to the shape of the three-dimensional substrate is manufactured and transported by a transferring unit of the rotary roller type in the same manner as the conventional method, However, in this case, the weight of the jig can be increased by constructing the protruding support portion, and it is not easy to construct a vacuum device for adsorbing the jig between the substrate and the substrate.

Korean Patent No. 10-1506456

SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a vacuum cleaner having a hollow formed in a jig, a support protruding to support a three- The position of the substrate in the three-dimensional shape can be stably fixed during the coating process by moving the stage while the substrate is fixed using the stage in which the holes are formed and performing the coating process. Thus, uniform coating is possible, And a coating system of a three-dimensional substrate.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

The above object is achieved according to the present invention by a plate-shaped jig having a three-dimensional shaped substrate and a hollow formed under the substrate; A coating module for spraying a coating liquid on top of the substrate; Wherein a support surface is formed corresponding to the shape of the substrate and inserted into the hollow below the jig to support the substrate through the seating surface, A vacuum hole formed in the substrate, the substrate moving in the forward and backward directions to coat the substrate through the coating module; And a driving unit for moving the stage.

Here, the substrate may be a shape including a planar flat portion and a curved surface portion extending to be bent at both edges of the planar portion.

Here, the support portion may be inserted through the hollow, and a planar seating surface may protrude to support the planar portion.

A stepped surface may be formed around the hollow of the jig to support both ends of the curved surface portion.

In this case, a plurality of hollows are arranged in an array in the jig so as to seat a plurality of substrates, and a plurality of support portions may be arranged in an array in the stage.

A first conveying unit for conveying a jig on which the substrate is placed toward the coating module in front of the coating module; And a second transfer unit for transferring a jig on which the substrate is placed from the rear of the coating module to an apparatus for a post-coating process after coating.

Here, the first conveying unit and the second conveying unit can support and convey the jig on which the substrate is placed by a plurality of rotating rollers.

Here, the driving part lifts the stage under the jig on which the substrate transferred through the first transfer part is placed, inserts the supporting part into the hollow, and vacuum-sucks the substrate through the vacuum hole, It can be adsorbed and fixed.

Here, the vacuum suction through the vacuum hole is canceled, and the driving unit moves the stage down from the upper part of the second transfer part to place the jig on which the substrate is placed on the second transfer part.

According to the coating system of the three-dimensional substrate of the present invention as described above, the three-dimensional substrate can be stably fixed in the coating process by the stage having the support portion and the vacuum hole, so that uniform coating is possible.

In addition, since the weight of the jig can be lightly reduced, there is an advantage that the jig can be easily transferred by the operator after the completion of the subsequent process.

1 is an external view of a coating system for a three-dimensional substrate according to an embodiment of the present invention.
FIG. 2 is a perspective view of a three-dimensional shaped substrate according to an embodiment of the present invention, showing an edge-type smartphone display substrate.
3 is a perspective view illustrating a jig according to an embodiment of the present invention.
FIG. 4 is a perspective view showing a state where the substrate of FIG. 2 is seated on the jig of FIG. 3;
5 is a plan view showing a flow of a process according to a coating system of a three-dimensional substrate according to an embodiment of the present invention.
Fig. 6 is a side view of Fig. 5. Fig.
7 is a perspective view showing a jig on which a substrate arriving at one end of the first transfer section is seated and a stage for transferring the jig.
8 is a perspective view showing a jig seated on the stage.
9 is a view showing a process of adsorbing and fixing a jig on which a substrate is placed on a stage.
10 is a view showing a process of separating a jig on which a substrate is seated from a stage.

The details of the embodiments are included in the detailed description and the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for explaining a coating system of a three-dimensional substrate according to embodiments of the present invention.

2 is a perspective view of a three-dimensional substrate according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of an edge-type smartphone display substrate according to an exemplary embodiment of the present invention. FIG. 3 is a perspective view showing a jig according to an embodiment of the present invention, and FIG. 4 is a perspective view showing a state where the substrate of FIG. 2 is seated on the jig of FIG.

1, a coating system 100 of a three-dimensional substrate according to an embodiment of the present invention includes a first transfer unit 110a for transferring a jig 130 on which a substrate 120 is placed, A coating apparatus 200 for performing a coating process on the jig 130 on which the substrate 120 transferred by the coating unit 110a is mounted and a jig 130 on which the coated substrate 120 is placed after the coating process is completed And a second transfer unit 110b for transferring the process to a subsequent process. In the coating apparatus 200, a plasma processing module 160, a coating module 150, a stage 140, and the like may be configured.

The first transfer part 110a and the second transfer part 110b are constituted by a plurality of rotating rollers 112 and the substrate 120 placed on the rotating roller 112 by the rotation of the rotating roller 112 is conveyed in one direction However, the structure of the first transfer unit 110a is not limited thereto.

The substrate 120, which is a coating member in the present invention, may have a three-dimensional shape as shown in FIG. 2, and may have a flat surface portion 122 and a curved surface portion 122 bent and extended to bend at both edges of the flat surface portion 122 And may have a shape including a surface portion 124. For example, it may be a display substrate 120 for an edge-type smartphone, and the shape of the substrate 120 in the present invention is not limited thereto.

The jig 130 is a flat plate-shaped member and seats the three-dimensional substrate 120 on one surface. The three-dimensional substrate 120 is moved in a seated state, and the plasma process and the coating process, which will be described later, are sequentially performed.

The jig 130 may be voltage applied or grounded according to each process of processing the substrate 120. Therefore, it may be formed of a conductive material. In this embodiment, it may be made of aluminum.

An example of applying a voltage to the jig 130 in the present invention is that when the substrate 120 passes through the plasma processing module 160 to be described later and the surface of the substrate 120 is subjected to plasma processing, The plasma can be moved toward the substrate 120 by applying the polarity opposite to the polarity of the generated plasma to the jig 130. [

An example in which the jig 130 is grounded in the present invention is that when the substrate 120 is coated with the substrate 120 while passing through the spray nozzle 152 of the coating module 150, the spray nozzle 152 and the jig The jig 130 can be grounded to generate a potential difference between the spray nozzle 152 and the jig 130 so that a fine droplet is formed by a strong electric field between the spray nozzle 152 and the jig 130.

3, a hollow 132 is formed in the jig 130. The hollow 132 allows the support 142 of the stage 140, which will be described later, to be inserted. A stepped surface 134 may be formed around the hollow 132 according to the shape of the substrate 120. When the substrate 120 of FIG. 2 is placed on the jig 130, The position of the substrate 120 can be fixed by supporting the both ends of the curved surface portion 124 on the wall surface by the step difference so that the substrate 120 is detached by vibration or the like during the movement by the conveyance portions 110a and 110b Can be prevented.

A plurality of hollows 132 may be arranged in an array in the jig 130. The substrate 120 may be fixed to a position where the hollows 132 are formed, 120 can be seated.

Hereinafter, the flow of the coating process according to the present invention will be described with reference to FIGS. 5 and 6. FIG.

FIG. 5 is a plan view showing a flow of a process according to a coating system of a three-dimensional substrate according to an embodiment of the present invention, and FIG. 6 is a side view of FIG.

The jig 130 on which the substrate 120 is placed is moved from the left to the right in the drawing from the upper portion of the first conveying portion 110a by the first conveying portion 110a constituted by the plurality of rotating rollers 112. [ At this time, the plasma processing module 160 passes through the plasma processing module 160 during the transfer process. The plasma processing module 160 processes one side of the coated substrate 120 to have a hydrophilic property or a hydrophobic property.

Here, the hydrophilic property or the hydrophobic property can be determined in consideration of the property of the coating solution used in the coating module 150 described later. That is, if the coating liquid sprayed from the spray nozzle 152 of the coating module 150 has a hydrophilic property, the coating liquid may have a hydrophilic property on the outer surface of the substrate 120 so that the coating liquid may effectively land on the outer surface of the substrate 120. The plasma processing can be performed. On the other hand, if the coating liquid has hydrophobic properties, the outer surface of the substrate 120 can be plasma-treated to have a hydrophobic property.

In addition, the plasma processing module 160 can perform a process of discharging or charging the substrate 120. Here, the erasing can be performed when the charges distributed on the substrate 120 are non-uniformly distributed, and the charging can be used to uniformly distribute the charges on the substrate 120. [ By discharging or charging the substrate 120 through the plasma processing module 160, the atomized liquid ejected from the spray nozzle 152 can be more effectively landed on the substrate 120

The jig 130 that has passed through the plasma processing module 160 can be stopped while standing at one end of the first transfer part 110a and the jig 130 can be moved by the movement of the jig 130, And then the coating material is transferred to the coating module 150 while moving the stage 140 from left to right.

The coating process may be performed by spraying the coating liquid through a spray nozzle 152 located on top of the substrate 120. A plurality of spray nozzles 152 may be used, You can move back and forth, right and left. Since the construction of the coating module 150 that performs the coating process is the same as that known in the art, detailed description related thereto will be omitted.

At this time, in the coating process as described above, the jig 130 can be grounded so that a strong electric field is formed between the spray nozzle 152 and the jig 130.

The stage 140 is moved from left to right and the coating process is performed by the coating module 150. The stage 140 on which the jig 130 is mounted is positioned behind the coating module 150, So that the jig 130 seated on the stage 140 is transferred from the stage 140 to the second transfer section 110b. Then, the jig 130 on which the substrate 120 coated with the second transfer unit 110b is placed can be transferred to a device for performing a sintering process or the like, which is a subsequent process.

That is, in the present invention, instead of carrying the jig 130 continuously and carrying out the coating process by the transferring unit of the rotary roller type like the apparatus for coating the conventional plane substrate 120, The stage 140 is transferred from the first transfer part 110a to the jig 130 on which the substrate 120 is placed and the stage 140 is moved to perform a coating process, So that the jig 130 on which the coated substrate 120 is mounted is transferred from the stage 140 to the second transfer unit 110b.

In this case, the jigs 130a and 130b on which the substrate 120 is mounted are continuously supplied on the first transfer part 110a. When the jig 130b positioned at the front is transferred to the stage 140 to perform the coating process, The next jig 130a is transferred by the first transfer unit 110a to wait for the coating process.

The configuration of the stage 140 according to the present invention and the configuration for sucking the jig 130 and the substrate 120 on the stage 140 and the configuration for separating the jig 130 from the stage 140 will be described with reference to FIG. With reference to FIG. 10.

FIG. 7 is a perspective view showing a jig on which a substrate arriving at one end of the first conveyance unit is placed and a stage for conveying the same, FIG. 8 is a perspective view showing a jig seated on the stage, FIG. 10 is a view showing a process of adsorbing and fixing a jig, and FIG. 10 is a view showing a process of separating a jig on which a substrate is placed from a stage.

FIG. 7 shows a jig 130 on which a substrate 120 waiting at the end of the first transfer unit 110a is placed, and a stage 140 to transfer and receive the jig 130.

As shown in the figure, a plurality of support portions 142 corresponding to the respective substrates 120 are formed in an array in the stage 140.

The support portion 142 is protruded from the body of the stage 140. The support portion 142 is inserted through the hollow 132 formed in the jig 130 as the stage 140 is raised below the jig 130 Dimensional substrate 120 that is seated on the jig 130 on the hollow 132 and supports the substrate 120. Therefore, the seating surface 141, which is the upper surface of the support portion 142, is preferably formed to correspond to the shape of the substrate 120. In this embodiment, the support portion 142 contacts the planar portion 122 of the substrate 120 to support the substrate 120, so that the seating surface 141 can be formed as a flat surface.

As shown in FIGS. 7 and 8, the support portions 142 may be formed so that vacuum holes 144 passing through the seating surface 141 are mutually connected to each other. The substrate 120 can be adsorbed on the seating surface 141 by vacuum suction by a vacuum apparatus (not shown).

7, when the stage 140 moves down the jig 130 waiting above the first transferring unit 110a and then moves up, the support 142 of the stage 140 moves to the hollow of the jig 130 132 and receive the jig 130 on the stage 140.

The process of fixing the position of the substrate 120 by receiving the jig 130 waiting on the first transfer unit 110a will be described in detail. As shown in FIG. 9, the first transfer unit 110a waits The support 142 can be inserted through the hollow 132 of the jig 130 by positioning the stage 140 below the jig 130 on which the substrate 120 with the substrate 120 is placed and raising the stage 140. [ At this time, as shown in the enlarged view of FIG. 9, a minute gap may be formed between the substrate 120 and the support portion 142 and between the jig 130 and the stage 140, When vacuum is applied by the vacuum device, the substrate 120 and the supporting part 142 come into close contact with each other, and the jig 130 and the stage 140 are also in close contact with each other. Therefore, the substrate 120, the jig 130, and the stage 140 can be firmly fixed to each other.

As the vacuum adsorption is performed, the stage 140 is moved back and forth, and the coating process is performed through the coating module 150.

When the coating process is completed, the jig 130 mounted on the stage 140 is transferred from the stage 140 to the second transfer unit 110b. 10, the vacuum suction is first released by the vacuum device to eliminate the mutual binding force between the substrate 120, the jig 130, and the stage 140, and the stage 140 The jig 130 on which the coated substrate 120 is mounted can be separated from the stage 140 and the jig 130 can be transferred onto the second transfer unit 110b.

Although the driving unit for moving the stage 140 is not shown in the drawing, as described above, in the present invention, a driving unit for moving the stage 140 back and forth and up and down can be formed. Further, the driving unit may cause the stage 140 to rotate. The configuration of the driving unit for moving the stage 140 can be various known methods such as a robot arm, and thus a detailed description thereof will be omitted.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

100: Coating system of three-dimensional substrate
110a:
110b:
112:
120: substrate
122:
124: curved surface
130: jig
132: hollow
134:
140: stage
141: seat face
142: Support
144: Vacuum hole
150: Coating module
152: Spray nozzle
160: Plasma processing module
200: Coating device

Claims (9)

A plate-shaped jig on which a substrate having a three-dimensional shape is placed and a hollow is formed beneath the substrate;
A coating module for spraying a coating liquid on top of the substrate;
A first conveying unit for conveying a jig on which the substrate is seated in front of the coating module toward the coating module;
A second transfer unit for transferring a jig on which the substrate is placed from the rear of the coating module to a device for a subsequent process after coating;
Wherein a support surface is formed corresponding to the shape of the substrate and inserted into the hollow below the jig to support the substrate through the seating surface, A vacuum hole formed in the substrate, the substrate moving in the forward and backward directions to coat the substrate through the coating module; And
And a driving unit for moving the stage between the first transfer unit and the second transfer unit. The method according to claim 1,
Wherein the substrate has a shape including a planar surface portion and a curved surface portion extending to bend at both edges of the planar surface. 3. The method of claim 2,
Wherein the support portion is inserted through the hollow and has a planar seating surface protruded to support the planar portion. 3. The method of claim 2,
And a stepped surface is formed around the hollow of the jig to support both ends of the curved surface portion. The method according to claim 1,
A plurality of hollows are arrayed in the jig to seat the plurality of substrates,
Wherein a plurality of support portions are arranged in an array in the stage. delete The method according to claim 1,
Wherein the first transfer unit and the second transfer unit support and transport a jig on which the substrate is mounted by a plurality of rotating rollers. The method according to claim 1,
The driving part raises the stage below the jig on which the substrate transferred through the first transfer part is seated, inserts the supporting part into the hollow,
Wherein the substrate is vacuum-sucked through the vacuum hole to adsorb and fix the substrate on the support. The method according to claim 1,
Releasing the vacuum suction through the vacuum hole,
Wherein the driving unit lowers the stage at an upper portion of the second transfer unit to seat the jig on which the substrate is mounted on the second transfer unit.

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