KR102286823B1 - A Screen Printing Device and Roll-to-Roll Substrate Fabricating Aapparatus having the same - Google Patents

Abstract

Provided are a screen printing device and a roll-to-roll substrate manufacturing apparatus having the same. In accordance with the present invention, the screen printing device comprises: a printing unit which includes a mask frame fixing a screen mask with a certain pattern, a plurality of sliders connected to the mask frame by the medium of a plurality of connection members, and a pair of rails on both sides assembled with the plurality of sliders to be glidable, and which has the mask frame corresponding to the film and capable of making a reciprocating motion; an operation unit which includes a screw shaft in a certain length, which is engaged with a female screw unit of a moving block connected to one side end of both sides of the mask frame, by a screw, and makes the mask frame operate forward and backward by a reciprocating motion by having a driving motor which rotates and drives the screw shaft in the normal direction or the reverse direction; a squeezing unit which includes a squeezer with a lower end facing the screen mask, and a first actuator connected to an upper end of the squeezer and making the squeezer up and down by linking to the operation of the mask frame forward and backward for returning to its original position, and which prints a metal pattern on a surface of the film; and a spreading unit which includes a spreader with a lower end facing the screen mask, and a second actuator connected to an upper end of the spreader and operating the spreader up and down by linking to the forward and backward operation of the mask frame for returning to its original position, and which spreads a printing conduction ink spread on the screen mask. The present invention aims to provide a screen printing device and a roll-to-roll substrate manufacturing apparatus having the same, which are able to reduce the manufacturing cost.

Description

A Screen Printing Device and Roll-to-Roll Substrate Fabricating Aapparatus having the same}

The present invention relates to a screen printing apparatus and an apparatus for manufacturing a flexible substrate by a roll-to-roll method, and more particularly, having low resistance and high permeability while printing a pattern by a screen printing method on the surface of a film supplied by a roll-to-roll process It relates to a screen printing apparatus capable of continuously manufacturing a flexible substrate and a roll-to-roll substrate manufacturing apparatus having the same.

Recently, electric and electronic devices having flexible characteristics, for example, flexible electronic devices such as flexible displays, solar cells, surface lighting, e-paper, flexible secondary batteries, and touch panels, are promising technologies in the future. It is currently in the spotlight as a field.

Flexible electronic device technology has been developed to make electronic devices and systems that are inexpensive, easy to bend, and have transparent properties.

The existing process for manufacturing a flexible substrate is complicated because it is necessary to apply a solvent-containing solution for manufacturing a flexible substrate on a metal belt or drum and prepare it in a temporary film state, then separate it and dry and harden it. There was a problem with the low.

In addition, in order to realize an electric and electronic device having flexible characteristics, a flexible substrate manufacturing technology including a transparent electrode having a transparent and low resistance is essential.

As a method for lowering the resistance of the metal wiring, there may be a method of lowering the specific resistance (ρ) value, shortening the wiring length, or increasing the wiring height (thickness).

However, the method for lowering the resistivity value has a limitation on the material of the metal wiring, and in the case of copper, which is currently widely used, it is a material with sufficiently low resistivity, and the material such as silver has a problem that it is expensive, so it is difficult to apply. The method of shortening the length has a physical limitation due to a problem related to the circuit design.

In addition, in the method of increasing the thickness, which is the height of the wiring, problems such as disorder of the shape of the wiring, an electrical short circuit, a short circuit between the wirings, and damage to the wiring may occur as the thickness, which is the height of the wiring, increases.

Therefore, a technique for inserting a metal wiring into the substrate is required, and as a conventional technique for inserting a metal wiring into a substrate, a method of etching into a desired pattern through deposition and etching, and a method of etching copper ( A damascene method or the like is known in which a CMP method is applied to a Cu) thin film and the like to drive wiring into an insulating film groove.

However, in this conventional method, there is a problem in that the material consumption is high and the process steps are complicated as the deposition and etching are repeated, and the plastic substrate may be damaged by heat when the metal layer formed on the substrate of the plastic material is heat-treated.

Accordingly, in order to solve the above problems, a method of first forming a metal wiring on a rigid substrate, coating and curing a curable polymer thereon, and then mechanically tearing off the rigid substrate to separate it has been proposed.

However, in the case of this prior art, in the process of forcibly peeling the rigid substrate from the polymer substrate in which the metal wiring is impregnated, damage to the metal wiring or the polymer substrate may be caused, leading to product failure, and the rigid substrate may be a polymer substrate. There was a problem that it was not completely removed from the body, and some remained and acted as a foreign material.

Accordingly, a method of separating and recovering the flexible substrate from the carrier substrate by forming a sacrificial layer soluble in water or an organic solvent or photodegradable on a carrier substrate, forming a flexible substrate layer in which metal wiring is impregnated, and removing the sacrificial layer has been proposed

However, this conventional method has a problem in that the manufacturing cost increases due to the treatment of waste water, waste organic solvent, etc. discharged from the process of removing the sacrificial layer by dissolving or photolyzing the sacrificial layer with water or an organic solvent.

(Patent Document 1) KR 10-2020-0119981 A

(Patent Document 2) KR 10-1474759 B

And, Patent Document 1 discloses a pattern printing unit for pattern printing by transferring the metal wiring to the release layer while passing the carrier film supplied unwinding from the first unwinder between the printing roll and the support roll. In the process of pattern printing the metal wiring while passing it between the printing roll and the support roll, there was a problem in that product defects frequently occurred in which the metal wiring was disconnected during post-process inspection due to poor contact.

In addition, Patent Document 2 includes a printing squeegee that is coupled to the screen frame and presses the screen to print a print pattern on the surface of the film with ink when the screen moves forward, and descends to apply ink to the surface of the screen when the screen moves backward. Disclosed is a screen printing apparatus for printing a pattern on the surface of a film by having an ink diffusion squeegee that rises apart from the screen when the screen is advanced, but the screen is opened in conjunction with the vertical operation of the printing squeegee and the ink diffusion squeegee. Since the overall power transmission structure of the screen moving unit that operates forward and backward is complicated, the responsiveness of reciprocating the screen according to the transport speed of the film is lowered, which makes it difficult to stably print the pattern continuously on the film surface. there was.

Accordingly, the present invention is to solve the above-mentioned problems, and the object is to simplify the structure for reciprocating the screen mask and quickly perform the responsiveness of reciprocating the screen mask to continuously form a metal pattern on the film surface. An object of the present invention is to provide a screen printing apparatus capable of stably printing without defects, and a roll-to-roll substrate manufacturing apparatus having the same.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be able

As a specific means for achieving the above object, a preferred embodiment of the present invention is an apparatus for printing a metal pattern on the surface of a film moving in one direction, comprising a mask frame for fixing a screen mask on which a predetermined pattern is formed, A printing comprising a mask frame and a plurality of sliders connected via a plurality of connecting members, and a pair of left and right rails on which the plurality of sliders are slidably assembled to reciprocally move a mask frame disposed corresponding to the film wealth ; It has a screw shaft of a certain length screwed to the female screw part of the moving block connected to one end of the left and right sides of the mask frame, and a driving motor for rotating the screw shaft in the forward or reverse direction to reciprocate the mask frame back and forth working part; A first actuator having a squeezer facing the screen mask and the lower end and connected to the upper end of the squeezer to move the squeezer up and down in conjunction with the forward and backward return operations of the mask frame is provided on the surface of the film. A squeezing unit for printing a metal pattern; and a second actuator having a sprayer facing the screen mask and the lower end, and connected to the upper end of the sprayer to move the sprayer up and down in conjunction with the forward and backward return operations of the mask frame. It provides a screen printing device comprising a; a spraying unit for spraying the conductive ink for printing applied to the.

In this case, the squeezing unit includes a pair of squeezer holders fixed by interposing the upper ends of the squeezer, a holder bar of a certain length to which each upper end of the pair of squeezer holders is coupled and fixed, and both ends of the holder bar are inserted correspondingly It may include a pair of left and right support brackets penetrating the support hole to be supported, and a first lower connecting rod in which the pair of left and right support brackets are fixedly installed on the lower surface while being connected to the first actuator.

At this time, both sides of the outer surface of the holder bar may be provided with a flat cut-out surface formed so that the upper end of each inner surface of the pair of squeezer holders is in contact.

At this time, the spraying part is assembled so that the upper end of the sprayer is replaceable, and includes a second lower connecting rod connected to the second actuator, and the sprayer is at the lower end of the inclined plate inclined at a certain angle, the surface of the screen mask. It may include a lower bent plate in contact with the swash plate, and an upper bent plate fixedly installed in contact with the second lower connecting rod at the upper end of the swash plate.

At this time, the operation unit detects the position of the moving block to generate a detection signal for controlling the rotational driving of the driving motor, at least one sensor on the inner surface of one of the fixed plates of the left and right pair of fixed plates to which the driving motor is fixedly installed. member may be included.

In addition, the drive motor is fixedly installed on the inner surface of one of the pair of left and right fixed plates to which the rail is fixedly installed by a motor fixing bracket, and the movable block is a connecting member provided on one of the left and right sides of the mask frame. and the auxiliary connecting member as a medium may be connected and constrained.

In addition, another embodiment of the present invention, a film supply unit having a first unwinder in which a predetermined amount of the film is wound, and a second unwinder in which a predetermined amount of the protective film is wound; a screen printing device for printing a metal pattern on the surface of the film that is unwound and supplied from the first unwinder and is wound and moved on a support roll; a drying furnace for heating and drying the metal pattern printed on the film while passing the film from the inlet to the outlet in one direction; an infrared heater for heat-treating the metal pattern printed on the film drawn out from the outlet of the drying furnace with infrared rays; An upper laminating roll in contact with the other surface of the film and a lower laminating roll in contact with the other surface of the protective film coated with resin on one surface while being annealed and supplied from the second unwinder are provided to laminate the film and the protective film to the upper and lower parts. a laminating unit for laminating a film laminate by passing between the rolls; a curing machine for curing the resin by transferring heat to the film laminate or irradiating ultraviolet rays; and a rewinder for winding the film laminate. It provides a roll-to-roll substrate manufacturing apparatus comprising a.

According to the preferred embodiment of the present invention as described above, there are the following effects.

It is possible to simplify the structure of moving the screen mask back and forth for the fixed position and vertical operation of the squeezer and sprayer and reduce the number of components to reduce the manufacturing cost and maintenance cost.

By quickly performing the responsiveness of moving the screen mask back and forth reciprocally, the process of continuously printing a metal pattern on the film surface moving in one direction can be stably performed without printing defects, thereby lowering the defect rate and increasing the product yield.

1 is an overall configuration diagram showing a screen printing apparatus according to an embodiment of the present invention.
2 is a plan view showing a screen printing apparatus according to an embodiment of the present invention.
3 is an operation state diagram illustrating a state in which a metal pattern is printed on a film in a state in which the screen mask is advanced in the screen printing apparatus according to an embodiment of the present invention.
4 is an operational state diagram illustrating a state in which conductive ink is sprayed on the screen mask in a state in which the screen mask is returned backward in the screen printing apparatus according to an embodiment of the present invention.
5 is a view showing a squeezing unit applied to a screen printing apparatus according to an embodiment of the present invention,
(a) is an exploded perspective view,
(b) is a front view,
(c) is a side view.
6 is a view showing a spraying unit applied to a screen printing apparatus according to an embodiment of the present invention,
(a) is an exploded perspective view,
(b) is a front view,
(c) is a side view.
7 is a schematic diagram showing an apparatus for manufacturing a roll-to-roll substrate having a screen printing apparatus according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment in which a person of ordinary skill in the art to which the present invention pertains can easily practice the present invention will be described in detail. However, in the detailed description of the structural principle of a preferred embodiment of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, the same reference numerals are used throughout the drawings for parts having similar functions and functions.

In addition, throughout the specification, when a part is 'connected' with another part, it is not only 'directly connected' but also 'indirectly connected' with another element interposed therebetween. include In addition, 'including' a certain component does not exclude other components unless otherwise stated, but means that other components may be further included.

As shown in Figs. 1, 2, 3 and 4, the screen printing apparatus 1 according to a preferred embodiment of the present invention includes a printing unit 10, an operating unit 20, a squeezing unit 30 and A spraying unit 40 may be included.

The printing unit 10 has a mask frame 11 for fixing the outer edge of the screen mask M on which a preset printing pattern is formed, and a plurality of connecting members ( 12) and a plurality of sliders 13 connected via a medium, and a pair of left and right rails 15 slidably assembled with the plurality of sliders.

In the screen mask (M), a printing pattern of a specific design to be printed on the surface of the film (S1) transferred in one direction in a roll-to-roll manner is formed in a perforated form, the rest is blocked, and a liquid conductive ink for printing is applied and sprayed. It may be made of a textile material so that it naturally permeates the surface.

The mask frame 11 may be formed in a substantially rectangular frame shape for fixing and supporting the screen mask M made of a substantially rectangular mesh body in a replaceable manner.

The plurality of sliders 13 are coupled to the lower surface of the other end of the connecting member 12 having one end assembled on both sides of the line and rear end of the mask frame 11, and these sliders 13 are a pair of left and right having a predetermined length. It is slidably assembled on the upper surface of the rail 15 and movably moved forward and backward in a direction parallel to the transport direction of the film together with the mask frame.

The left and right pair of rails 15 are coupled to the upper surface of the fixing plate 15a provided on the left and right pair of fixing plates 16, and the left and right fixing plates 16 are respectively coupled to both ends of the horizontal bar 19, It may be vertically fixed to one side of the upper end of the main frame (F) provided in the substrate manufacturing apparatus 100 to be described later while maintaining the spacing.

At this time, the fixing table 15a coupled to the rail 15 is provided with a plurality of intervals to prevent mutual interference between the slider 13 and the fixing plate 16 that are reciprocally moved when the mask frame 11 is reciprocated. It is preferable to be spaced apart from the inner surface of the fixing plate 16 at a predetermined distance by a holding member and to be fixedly installed.

Accordingly, the mask frame is slidably assembled to be able to move forward and backward along the rail by the external force of the operation unit together with the screen mask.

As shown in Figs. 1 and 2, the operation unit 20 includes a moving block 23 connected to one end of the left and right sides of the mask frame 11, and is formed through the center of the body of the moving block. A drive motor 21 comprising a screw shaft 22 of a certain length screw-coupled to the female screw part, and connected to one end of the screw shaft 22 to rotate the screw shaft 22 in a forward or reverse direction. may include.

The drive motor 21 is a motor member fixedly installed on the inner surface of one fixed plate 16 among a pair of left and right fixed plates to which the rail 15 is fixedly installed by a motor fixing bracket 21a, and the screw shaft ( 22) is a shaft member supported while being fixedly installed on the inner surface of a fixing plate on which the drive motor is fixedly installed by a shaft fixing support bracket 24 having a bearing member.

In addition, the moving block 23 is connected through the upper surface of the connecting member 12 provided on one side of the left and right sides of the mask frame 11 and the auxiliary connecting member 23a as a medium.

Accordingly, when the screw shaft 22 is driven in the forward rotation direction by the driving motor 21, the moving block 23 screwed thereto moves in the same direction as the film transfer direction and at the same speed as the film transfer speed. By moving forward, the mask frame 11 restrained through the auxiliary connecting member 23a is moved so that the metal pattern printing operation by the squeegeer 31 of the squeezing part 30 is possible.

On the other hand, when the screw shaft 22 is rotated in the reverse direction, the moving block 23 screwed thereto is moved backward and returned in the opposite direction to the film transport direction, thereby causing the mask frame 11 to be sprayed by the spraying unit 40 . The mask frame is moved backward and return at a speed relatively faster than the speed at which the mask frame is moved forward so that the conductive ink spraying operation using the head 41 is possible.

That is, it is preferable that the forward movement and the backward return movement of the mask frame by the driving motor are controlled at different speeds, and the forward movement speed of the mask frame for printing the metal pattern is controlled at the same speed as the movement speed of the film.

And the backward return speed of the mask frame for spraying the conductive ink applied to the screen mask is faster than the forward movement speed of the preceding screen mask, so that the empty space between the sections of the metal pattern repeatedly formed on the film By reducing the size of the margin width, it is possible to increase the density of the metal pattern per unit area of the film to increase productivity.

In addition, since the driving motor and the screw shaft are disposed to be disposed on one side of the mask frame, it is possible to increase the space utilization of the equipment while minimizing the area occupied in the limited space of the main frame.

At this time, the operation unit 20 detects the position of the moving block 23 that is moved forward by the driving force of the driving motor and then returned to the reverse, and generates a detection signal for controlling the rotational driving of the driving motor. At least one sensor member 29 may be included on an inner surface of one fixed plate 16 among a pair of left and right fixed plates to which the driving motor 21 is fixedly installed.

As shown in FIGS. 2, 3 and 4, the squeezing unit 30 includes a squeezer 31 having a substantially rectangular plate shape, the lower end of which is opposite to the screen mask M provided in the mask frame, and , a first actuator 39 connected to the upper end of the squeezer 31 to vertically move the squeezer while interlocking with the forward and backward return operations of the mask frame.

As shown in FIGS. 5A, 5B and 5C, the squeezing unit 30 includes a pair of squeezer holders 32 to which the upper end of the squeezer is interposed and fixed, and the pair of squeezer holders 32. A pair of left and right support brackets 34 having a holder bar 33 of a certain length to which each upper end is coupled and fixed, and a pair of left and right support brackets 34 penetrating a support hole 34a through which both ends of the holder bar are inserted and rotatably fixedly supported ), while being connected to the first actuator 39, the pair of left and right support brackets may include a first lower connecting rod 35 that is fixedly installed on the lower surface.

In addition, the upper end of the squeezer 31 interposed between the pair of squeezer holders 32 facing each other may be replaceably assembled by a fixing member fastened to a fixing hole formed on the front surface of the squeezer holder.

On both sides of the outer surface of the holder bar 33 corresponding to the upper end of each of the pair of squeezer holders 32, a cut surface 33a on a plane in which the upper end of each inner surface of the pair of squeezer holders is in contact is formed. A pair of squeezer holders 32 in contact with the cut surface can be substituted and fixed by another fixing member fastened to a fixing hole formed in the cut surface.

The circular bars 33b formed at both ends of the holder bar 33 are inserted and coupled to the support holes 34a of the pair of support brackets 34, and the support holes are cut open to the lower end side. By overlapping the slit 34b, the circular bar of the holder bar correspondingly inserted into the support hole 34a may be replaced by a fastening member that is fastened to spread or close the slit.

In addition, the holder bar 33 is rotated in a clockwise or counterclockwise direction around the support hole 34a, so that the lower end of the squeezer 31 is in contact with the horizontal screen mask M. can be easily changed.

At this time, it is preferable to easily check the angle of the squeezer to be rotated with the naked eye using a scale formed on the outer surface of the support bracket 34 .

The first actuator 39 is a cylinder member that is vertically fixed to the upper surface of the first upper fixture 37, both ends of which are fixed to a pair of left and right fixing plates for fixing and installing the rail 15 coupled to the slider. can be

The rod tip of the first actuator 39 is connected to the upper surface of the first lower connecting rod 35 , and a pair of left and right first guide bars whose lower ends are connected to the upper surface of the first lower connecting rod 35 . Reference numeral 36 may be provided as a bar member of a certain length that is movably coupled to a pair of left and right bushing members 37a provided on the first upper fixture 37 on which the first actuator is fixedly installed.

Accordingly, in the process of squeezing the conductive ink or the spraying process, the vertical movement of the first lower connecting rod by the vertical operation of the first actuator is performed by a pair of left and right first guide bars coupled to the pair of left and right bushing members. can be performed stably.

The process of printing ink for printing on the film surface using the squeezer of the squeezing part is, as shown in FIG. 3 , a squeegeer that is lowered with the descending of the first lower connecting rod by the descending operation of the first actuator. While the lower end of 31 is elastically in contact with the screen mask of the mask frame, the sprayer 41 of the spraying unit 40 waits to rise so that the lower end is spaced apart from the screen mask M.

In this state, when the mask frame is moved relatively forward by the driving force of the driving motor with respect to the squeezer 31 fixed in position, the conductive ink for printing sprayed on the surface of the screen mask is squeezed by the lower end of the squeezer. A process of printing a metal pattern on the surface of the film S1 is performed.

As shown in FIGS. 2, 3 and 4, the spraying unit 40 includes a plate-shaped sprayer 41 having a lower end facing the screen mask M provided in the mask frame, and the A second actuator 49 connected to the upper end of the sprayer 41 to move the sprayer up and down while interlocking with the forward and backward return operations of the mask frame may be included.

As shown in FIGS. 6A, 6B and 6C, the spraying unit 40 is assembled so that the upper end of the sprayer has a lower surface replaceable, and a second lower connecting rod connected to the second actuator 49 (45) may be included.

The sprayer 41 includes a swash plate 41a inclined at a certain angle toward the squeezer, and sprays the conductive ink for printing at a lower end of the swash plate 41a while being in contact with the surface of the screen mask to have a uniform layer thickness. It may include a lower bending plate (41b) to be fixed, and an upper bending plate (41c) fixedly installed in contact with the lower surface of the second lower connecting rod (45) at the upper end of the swash plate.

The second actuator 49 is provided as a cylinder member that is vertically fixed to the upper surface of the second upper fixture 47 having both ends fixed to a pair of left and right fixing plates for fixing the rail 15 coupled to the slider. can be

The rod end of the second actuator 49 is connected to the upper surface of the second lower connecting rod 45 , and a pair of left and right second guide bars whose lower ends are connected to the upper surface of the second lower connecting rod 45 . Reference numeral 46 may be provided as a bar member of a certain length that is movably coupled to a pair of left and right bushing members 47a provided in the second upper fixture 47 on which the second actuator is fixedly installed.

Accordingly, the vertical movement of the second lower connecting rod by the vertical operation of the second actuator may be stably performed by a pair of left and right second guide bars coupled to the pair of left and right bushing members.

At this time, the adjacent first and second upper fixtures 37 and 47 may be provided as independent plate members that are different from each other, or may be provided as an integral plate member.

The process of spraying the conductive ink for printing onto the screen mask by using the sprayer 41 of the spraying part is, as shown in FIG. In addition, the lower bending plate, which is the lower end of the lower end of the sprayer 41, comes into contact with the screen mask of the mask frame, while the squeegeer 31 of the squeezing unit 30 is spaced apart from the screen mask M at the lower end. Climb up as much as possible.

In this state, when the mask frame that has been moved forward by the driving force of the driving motor relative to the sprayer 41 fixed in position while the lower end is in contact with the screen mask is relatively moved backward, the squeezer and the sprayer are in contact with each other. A certain amount of conductive ink for printing applied to the surface of the screen mask by a dispenser (not shown) provided therebetween is in contact with the lower surface of the lower bending plate of the sprayer and returns to the surface of the screen mask (M) with a certain thickness as a whole. The process of spraying evenly to have it is performed.

As shown in FIG. 7 , the roll-to-roll substrate manufacturing apparatus 100 having the screen printing apparatus 1 having the above configuration is a film supply unit, a drying furnace 130 , an infrared heater 140 , and a laminating unit 150 . A metal pattern is printed on the surface of the film by the screen printing device 1, including a curing machine 160 and a rewinder 103, and a resin is applied to the surface of the film, in which the metal pattern is sequentially heat-treated and infrared-treated. A film laminate is manufactured by laminating a protective film, and the film laminate is cured and then wound.

As shown in FIG. 7, the film supply unit includes a first unwinder 101 in which a predetermined amount of the film S1 is wound on a roll, and a first unwinder 101 in which the protective film S2 is wound on a roll in a predetermined amount. 2 includes an unwinder (102).

The first unwinder 101 and the second unwinder 102 unwind and supply the film S1 to the screen printing apparatus 1 side, and apply the protective film S2 to the laminating unit 150 . They are respectively installed on both sides of the main frame (F) which is fixedly installed on the floor surface so as to provide unwinding in one direction to the side.

Accordingly, while the tension of the film supplied unwinding from the first unwinder 101 is adjusted, the pattern printing process is performed in the process of being wound around the support roll R provided at the upper end of the main frame and changing the direction. Then, it is transferred to the drying furnace side.

The screen printing device (1) is a squeezer and a sprayer that operate up and down opposite to each other in a fixed position in the process of changing the direction of the film supplied unwinding from the first unwinder to the drying furnace side in contact with the support roll (R). and printing a metal pattern in a screen manner on one surface of the film by a screen mask operated back and forth.

In this case, the film may be provided as a PI film or thin glass, and the material of the metal pattern to be pattern-printed on the film is silver (Ag), copper (Cu), aluminum (Al), gold (Au), platinum (Pt). ), conductive metals such as nickel (Ni), tin (Sn), chromium (Cr), zinc (Zn) or alloys thereof, or indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide ( IZTO), aluminum zinc oxide (AZO), indium tin oxide-silver-indium tin oxide (ITO-Ag-ITO), indium zinc oxide-silver-indium zinc oxide (IZO-Ag-IZO), indium zinc tin oxide-silver -Indium zinc tin oxide (IZTO-Ag-IZTO), aluminum zinc oxide-silver-aluminum zinc oxide (AZO-Ag-AZO) may be formed of one or more conductive metal oxides.

As shown in FIG. 7 , the drying furnace 130 has an inlet for entering the film and an outlet for advancing to the outside, respectively, on both sides, and provides a 150° C. heat source to the inner space through which the film passes in one direction. By having a heating means, while passing the film in one direction, the metal pattern printed on the film surface is heated as a high-temperature heat source and heat-treated to dry it.

At this time, the metal pattern to be heat treated can lower the resistance value by being heat treated with a heat source at 150° C., and it is preferable that the temperature for drying and heat treatment of the metal pattern is appropriately adjusted according to the type of the conductive ink for printing as the material of the pattern.

Accordingly, the film S1 on which the metal pattern is printed is dried by heat treatment by providing a heat source to the liquid metal pattern while passing through the inner space of the drying furnace in a high temperature atmosphere in one direction.

The infrared heater 140 is provided on the outlet side of the drying furnace and by irradiating infrared rays to the surface of the film S that advances from the outlet to the outside, the metal pattern printed on the surface of the film is subjected to a second heat treatment to dry it. .

The laminating unit 150 includes an upper laminating roll 151 circumscribing the other surface of the film S1 that sequentially forms a heat-treated metal pattern on one surface while passing through the drying furnace 130 and the infrared heater 140. and the upper laminating roll 151 and the lower laminating roll 152, including a lower laminating roll 152 that is in contact with the other surface of the protective film S2 coated on one surface while being annealed and supplied from the second unwinder. A film laminate in which a film and a protective film are laminated so that the metal pattern of the film (S1) is embedded in the resin of the protective film (S2) by simultaneously inserting and laminating the film (S1) and the protective film (S2) between the (S3) will be formed.

The roll brackets supporting both ends of the upper laminating roll 151 are equipped with vertical guiders that are slidably assembled on the guide vertical rails of the main frame F, and are vertically moved toward the fixed lower laminating roll 152 side. It may be connected to the adjusting member for adjusting the gap so as to adjust the gap size, which is the gap between the lower laminating roll and the lower laminating roll.

Accordingly, the film (S1) having the pattern formed on one surface and the protective film (S2) coated on one surface of the resin are passed between the upper laminating roll 151 and the lower laminating roll 152 in one direction to pass the film laminate By laminating in (S3), the process of manufacturing a film laminate in which the pattern is embedded in a metal resin is performed.

At this time, a resin coater is included between the laminating unit and the second unwinder, and the resin coater is unwound in one direction from the second unwinder 102 provided on the other side of the main frame (F). By applying a resin on one surface of the supplied protective film S2, a resin layer of a certain thickness having a size equal to or relatively thicker than the layer thickness of the metal pattern of the film is formed on one surface of the protective film.

This resin coating machine includes a slot die for applying a liquid resin to one surface of the protective film S2 that is horizontally transferred to the laminating unit 150, and the other surface and the outer peripheral surface of the protective film S2 are circumscribed in one direction. It may include a rotating guide support roll, and a separate adjusting member for vertically moving the slot die so as to adjust the distance between the discharge port of the slot die and the protective film.

The protective film may be provided as a PET film, and a thermosetting or ultraviolet curable resin may be selectively used as the resin.

Accordingly, the resin discharged through the slot die of the resin coating machine is applied to one surface of the protective film to form a resin layer having a predetermined thickness.

The curing machine 160 is provided on the exit side of the laminating part to transfer heat to the film laminate (S3) in which the film and the protective film are laminated up and down or by irradiating ultraviolet rays to cure the resin covered with the metal pattern.

The resin layer formed by the resin may be made of a thermosetting resin or an ultraviolet curable resin, and the curing unit 160 is a curing means such as a heater providing a heat source or a UV irradiator irradiating ultraviolet light according to the type of resin. It may be optionally provided.

At this time, the curing machine 160 is illustrated and described as being installed on the upper surface corresponding to the upper surface, which is the other surface of the film S1, but is not limited thereto. The curing process can be performed by providing heat or ultraviolet light to the sieve side.

The rewinder 103 winds up the protective film and the film stack S3 in which the film is stacked up and down in the form of a roll so that the metal pattern is embedded in the resin.

On the other hand, by providing a guiding support roll of the resin coating machine, the lower laminating roll of the laminating unit, and the synchronizing circulation belt 170 that is wound and circulated in one direction simultaneously with the lower contact roll of the curing machine, a resin is applied to one surface of the protective film. The speed of moving the protective film in one direction to form a resin layer by application, the speed of passing the film and the protective film between the upper and lower laminating rolls, and the speed of passing the curing machine for curing the resin can be controlled by synchronizing there is.

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, and it is common in the technical field to which the present invention pertains that various substitutions, modifications, and changes are possible without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of

1: screen printing device
10: printing part
11: mask frame 12: connecting member
13: slider 15: rail
20: operation part
21: drive motor 22: screw shaft
23: moving block 24: shaft fixing support bracket
30: squeezing unit
31: squeezer 32: squeezer holder
33: holder bar 35: first lower connecting rod
37: first upper fixture 39: first actuator
40: spraying unit
41: sprayer 45: fourth lower connecting rod
47: fourth upper fixture 49: fourth actuator
101: first unwinder
102: second unwinder
103 : Rewinder
130: drying furnace
140: infrared heater
150: laminating unit
160: hardener

Claims (7)

A film having a mask frame for fixing a screen mask having a predetermined pattern formed thereon, a plurality of sliders connected to the mask frame and a plurality of connecting members as a medium, and a pair of left and right rails on which the plurality of sliders are slidably assembled and a printing unit having a mask frame arranged to be reciprocally movable;
It has a screw shaft of a certain length screwed to the female screw part of the moving block connected to one end of the left and right sides of the mask frame, and a driving motor for rotating the screw shaft in the forward or reverse direction to reciprocate the mask frame back and forth working part;
A first actuator having a squeezer facing the screen mask and the lower end and connected to the upper end of the squeezer to move the squeezer up and down in conjunction with the forward and backward return operations of the mask frame is provided on the surface of the film. A squeezing unit for printing a metal pattern; and
A sprayer having a lower end facing the screen mask is provided, and a second actuator connected to the upper end of the sprayer to move the sprayer up and down in conjunction with the forward and backward return operations of the mask frame is provided to the screen mask. Includes; a spraying unit for spraying the applied conductive ink for printing;
The operation unit detects the position of the moving block and generates a detection signal for controlling the rotational driving of the driving motor. At least one sensor member is installed on the inner surface of one of the pair of left and right fixed plates to which the driving motor is fixedly installed. Screen printing apparatus comprising a. According to claim 1,
The squeezing unit includes a pair of squeezer holders fixed with the upper end of the squeezer interposed therebetween, a holder bar of a certain length to which each upper end of the pair of squeezer holders is coupled and fixed, and both ends of the holder bar are inserted and supported A screen printing apparatus comprising: a pair of left and right support brackets penetrating a support hole; and a first lower connecting rod connected to the first actuator and fixedly installed on a lower surface of the pair of left and right support brackets. 3. The method of claim 2,
The screen printing apparatus, characterized in that provided with a planar cut-out surface formed so that the upper end of each inner surface of the pair of squeezer holders is in contact with both sides of the outer surface of the holder bar. According to claim 1,
The spraying unit includes a second lower connecting rod connected to the second actuator and the upper end of the sprayer is replaceably assembled,
The sprayer includes a lower bending plate in contact with the surface of the screen mask at the lower end of the inclined plate inclined at a certain angle, and an upper bending plate fixedly installed in contact with the second lower connecting rod at the upper end of the inclined plate. screen printing device. delete According to claim 1,
The driving motor is fixedly installed on the inner surface of one of the pair of left and right fixing plates to which the rail is fixed by a motor fixing bracket, and the movable block is provided on one side of the left and right sides of the mask frame. A screen printing device, characterized in that the connection is constrained through a connection member. a film supply unit including a first unwinder in which a predetermined amount of film is wound, and a second unwinder in which a predetermined amount of a protective film is wound;
The screen printing device of any one of claims 1 to 4 and 6, wherein the metal pattern is printed on the surface of the film being unwound and supplied from the first unwinder to be wound around the support roll;
a drying furnace for heating and drying the metal pattern printed on the film while passing the film from the inlet to the outlet in one direction;
an infrared heater for heat-treating the metal pattern printed on the film drawn out from the outlet of the drying furnace with infrared rays;
An upper laminating roll in contact with the other surface of the film and a lower laminating roll in contact with the other surface of the protective film coated with resin on one surface while being annealed and supplied from the second unwinder are provided for laminating the film and the protective film to the upper and lower parts. a laminating unit for laminating a film laminate by passing between the rolls;
a curing machine for curing the resin by transferring heat to the film laminate or irradiating ultraviolet rays; and a rewinder for winding the film laminate. A roll-to-roll substrate manufacturing apparatus comprising a.

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