KR20160017165A - Roll to roll printing and etching system - Google Patents

Abstract

The present invention relates to a roll to roll printing and etching system. A printing unit prints a print register on a substrate in an electronic printing method while a roll, made by winding the substrate of a web type, is mounted on a first unwinder to supply the substrate. A curing unit cures the print register. An etching unit etches the remaining region where the print register is not printed. The printing unit, the curing unit, and the etching unit are integrated to simplify complicated processes and reduce process costs through the simplified processes.

Description

[0001] The present invention relates to a roll to roll printing and etching system,

The present invention relates to a roll-to-roll print etching system, comprising: printing means for printing a print register on a substrate with an electronic printing method, wherein a roll formed by winding a web-shaped substrate is mounted on a first unwinder, To a roll-to-roll print etching system capable of simplifying a complicated process and reducing a process cost by integrally forming curing means for curing the same and etch means for etching remaining regions in which a print register is not printed .

Lithography techniques have been widely used in conventional electronic device fabrication techniques. However, in order to constitute an actual process using the lithography technique, various complicated processes such as vacuum deposition, exposure, development, plating or etching are required, and the process design and device configuration are complicated. In addition, due to the development of micro-technologies in various fields, a method has been sought for making an integrated circuit differently from photolithography.

Electronic printing is a technique of manufacturing an electronic device by simply performing a printing process. Since electronic printing can fundamentally eliminate the process complexity inherent in the photolithography process by replacing the photolithography process described above, researches have been actively conducted in recent years, such that the application range is expanded to various fields. Non-contact printing technologies include inkjet, spray, and slot die coating. Contact-type printing technologies include gravure, gravure offset, reverse offset, and screen printing.

On the other hand, in recent semiconductor manufacturing technology, a flexible substrate made of film rather than a rigid substrate has been used. When such a film type substrate is used, the process speed is increased and mass production is possible. The combination of the roll-to-roll production method and the electronic printing technology is very active in that the production efficiency can be further increased by combining the electronic printing technology as described above ought.

In the non-contact type printing method, it is suitable to perform printing in which a large area is uniformly coated, whereas in the case of forming a fine pattern, contact type printing techniques such as gravure and reverse offset are mainly used. In this contact printing technique, rolls are generally used for continuous processing. That is, a pattern to be printed is formed on the roll, and the pattern on the roll is transferred to the substrate to perform printing. Such a contact printing technique can be applied to both rigid substrates and flexible substrates. In the case of a rigid substrate, the roll and the substrate placed on the stage come in contact. In the case of a flexible substrate, Or a flexible substrate supported by another plate-like support is brought into contact. In the former case, the roll and the stage contact each other. In the latter case, the roll, the roll or the roll and the plate-like support come into contact.

A related art is disclosed in Korean Patent Laid-Open Publication No. 2011-0003444 (published on 2011-01-12, name: color filter manufactured by roll printing method).

Meanwhile, as described above, the conventional method of patterning a thin film deposited on a substrate by a photolithography process must be performed through 8 steps of PR coating, heat treatment, mask mounting, exposure, development, etching, PR removal and cleaning.

Particularly, in the case of depositing on a continuous flexible substrate in the form of a roll, it is mounted on a flexible substrate using a dry film resist for applying a photoresist on the substrate. However, since the resolution of exposure of the dry film is low, it is difficult to perform fine patterning . Further, since the process of attaching and post-drying the dry film is difficult to proceed continuously, the process becomes more complicated and the manufacturing cost is increased accordingly.

Accordingly, it is necessary to develop a system capable of improving the resolution of the patterning and patterning the thin film at a time, while simplifying the complicated patterning process.

Korean Patent Laid-Open No. 2011-0003444 (published on January 12, 2011, name: color filter manufactured by roll printing method)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide an apparatus and a method for supplying a substrate, The printing means for printing the print register in a printing manner, the curing means for curing the print register, and the etching means for etching the remaining region in which the print register is not printed are integrally formed to simplify the complicated process, To-roll print etching system that can reduce the cost of production.

The roll-to-roll print etching system of the present invention comprises a first unwinder for loading the web with a web-shaped substrate wound thereon; Printing means supplied from the first unwinder and printing a print register on a web on which an electroconductive film is formed on an upper side; Curing means for curing the print register on the web that has passed through the printing means; Etch means for etching the remaining region where the print register is not printed on the web passing through the curing means; Strip means for removing print registers on the web that have passed through said etching means; Cleaning means for cleaning the web passing through the strip means; And a first winder disposed at a rear end of the cleaning means to wind the substrate. And the second electrode is formed.

The roll-to-roll print etching system may further include a tension adjuster for adjusting a tension of the web transferred between the first unwinder and the first winder.

Further, the tension regulating unit is disposed between the first unwinder and the printing unit, and controls the speed of the web pulled out from the first unwinder; A tension sensor disposed between the absorber and the printing means to measure the tension of the web; A photographing unit disposed between the printing unit and the curing unit to photograph the web; A control unit for controlling operations of the infuser, the first unwinder, and the first winder according to the results measured by the tension sensor and the photographing unit; As shown in FIG.

In addition, the inflower may be provided on both sides of the web wound from the first unwinder in a roller shape, and may be rotated at a constant speed by a motor to push the web in a traveling direction.

In addition, the first unwinder and the first winder can adjust the tension of the web by controlling the motor torque or the friction force of the clutch by the control unit.

The photographing unit may include at least one photographing unit that photographs a first alignment mark formed on the web and a second alignment mark printed while passing through the printing unit, have.

The roll-to-roll print etching system may use at least one of the following methods: the screen printing, the gravure printing, the gravure offset printing, and the reverse offset printing.

In addition, the printing means may be provided with a plurality of apparatuses for various printing methods, each of which is modularized.

In addition, the roll-to-roll print etching system may be provided with a plurality of modules, each of which is modularized so that thermal curing or ultraviolet curing can be selectively performed according to the physical properties of the print register printed on the web.

The roll-to-roll print etching system further comprises a workpiece roll supporting the web fed from the first unwinder, wherein the printing means, the curing means, the etching means, the strip means and the cleaning means are passed through the work table roll Wherein the printing means and the curing means are disposed on the upper side of the web and the etching means, the strip means and the cleaning means are disposed on the lower side of the web.

In addition, the roll-to-roll print etching system may be a continuous method or a stop and go method so that the web may be fed from the first unwinder.

A method of aligning a roll-to-roll print etching system of the present invention comprises the steps of: a) controlling the speed of unwinding the web drawn from the first unwinder by the absorber; b) a photographing step of photographing the second alignment mark printed by the printing means and the first alignment mark formed on the web by the photographing section; c) measuring a distance and a size between adjacent first alignment marks and second alignment marks in the control unit to measure alignment accuracy through an image taken from the photographing unit; . ≪ / RTI >

Also, the method of aligning the roll-to-roll print etching system may include d) adjusting the torque value of the first winder according to the alignment accuracy measured by the control unit, or adjusting the friction force of the clutch formed on the first winder A feedback step; . ≪ / RTI >

The method of aligning the roll-to-roll print etching system may further comprise the step of adjusting the torque value of the first winder or the torque value of the clutch in the feedback step when the tension of the cliché film is to be increased according to the result measured in the measuring step. If the rotational speed of the first winder is higher than the speed of the web by controlling the frictional force, the tension may be increased.

The method of aligning the roll-to-roll print etching system may cause the size of the pattern printed by the printing means to be smaller than the original size when it is determined that the web has increased in accordance with the result measured in the measuring step.

The roll-to-roll print etching system of the present invention comprises printing means for printing a print register on a substrate by an electronic printing method, in which a roll formed by winding a web-shaped substrate is mounted on a first unwinder, The curing unit and the etching unit for etching the remaining area where the print register is not printed are integrally formed to simplify the complicated process and reduce the process cost therefrom.

More specifically, conventionally, a photoresist (PR) is applied to a substrate in order to pattern the substrate using photolithography, followed by curing by a heat treatment, followed by exposure and development by mounting a mask, A resist removal process is performed. In particular, in order to pattern a thin film deposited on a roll-shaped flexible substrate, a dry film resist must be mounted, which complicates the process.

In order to solve this problem, the present invention is capable of easily replacing PR coating, heat treatment, mask mounting, exposure and development processes in an electronic printing process by printing print registers on a web-shaped substrate by an electronic printing method, By this means, the etching process can be performed immediately, and the process time can be greatly shortened.

In addition, since the print register printing, curing, etching, print register removal and cleaning processes are performed through a web formed by winding in one roll, precise alignment control of the substrate is required.

Further, in order to prevent the overlay accuracy from becoming unattainable when the web is stretched or shrunk due to thermal deformation due to printing and curing to cause pattern deformation and overlapping printing of the next layer, The degree of shrinkage can be grasped and tension control of the web can be performed appropriately, thereby improving the process accuracy.

Further, the present invention can be selected in accordance with the required precision by providing a plurality of printing means for various printing methods such as screen printing, gravure printing, gravure offset printing, reverse offset printing, etc., It is possible to apply various printing techniques using various materials by using only one kind of equipment, so that it is possible to transfer the different kinds of curing means to other devices in the middle of the process The process can be simplified.

1 is a schematic view of a roll-to-roll print etching system according to an embodiment of the present invention;
2 is a process diagram using a roll-to-roll print etching system in accordance with an embodiment of the present invention.
Figures 3-5 illustrate various embodiments of a roll-to-roll print etching system in accordance with the present invention.
6 is a flow diagram illustrating an alignment method of a roll-to-roll print etching system in accordance with the present invention.

Hereinafter, a roll-to-roll print etching system according to the present invention as described above will be described in detail with reference to the accompanying drawings.

1, the roll-to-roll print etching system 1 of the present invention mainly includes a first unwinder 100, a printing unit 200, a curing unit 300, an etching unit 400, (500), a cleaning means (600), and a first winder (110).

At this time, the roll-to-roll print etching system 1 of the present invention is formed by integrating the printing means 200 for electronic printing and the etching means 400, so that patterning is possible on a flexible substrate in one system, The most important feature is that it can be simplified.

As shown in the drawing, the first unwinder 100 is provided with a roll having a web-shaped substrate wound thereon. The first unwinder 100 rolls and feeds the web 2.

Since the roll-to-roll print etching system 1 of the present invention is not intended to be applied to a rigid substrate in the form of a plate but is intended to be applied to a flexible substrate in a film form (which is generally referred to as a web 2) It is assumed that the substrate to be processed in the to-roll print etching system 1 is the web 2. [

The printing means 200 is provided by the first unwinder 100 and the printing resist 4 is printed on the web 2 on which the conductive film 3 is formed on the upper side so that the electronic printing is performed .

The curing means 300 cures the print register 4 on the web 2 that has passed through the printing means 200.

That is, in the conventional roll-to-roll print etching system 1 of the present invention, a photosensitive photoresist is applied and cured on a substrate in a conventional photolithography process, and then a mask is attached to allow ultraviolet rays to pass through only a certain region of the photoresist, A print register 4 is printed on the web 2 in accordance with a pattern formed on the master roll of the printing means 200, instead of a series of steps of removing an area exposed or exposed to ultraviolet rays through a process, The process of curing the print register 4 through the curing unit 300 is performed.

Briefly, the roll-to-roll print etching system 1 of the present invention is configured such that the printing and curing processes replace conventional photoresist (PR) application, curing, mask mounting, exposure and development processes.

At this time, the printing means 200 may use at least one of screen printing, gravure printing, gravure offset printing and reverse offset printing.

The various electronic printing methods as described above can be selected according to the required precision. In addition, the printing device 200 may be provided with a plurality of devices for various electronic printing methods as described above.

For example, when the printing means 200 uses a gravure printing method, a blanket having a pattern formed thereon is wound on a master roll, the printing resist is filled in the pattern, And transferred to a substrate.

The curing unit 300 may be modularized so that thermal curing or ultraviolet curing can be selectively performed according to physical properties of the printed resistors 4 printed on the web 2. [

In other words, the print register 4 printed on the web 2 may be a photocurable resistor or a thermosetting resistor, and the curing method must be changed according to such physical property. That is, when the print register 4 is a photo-curable resistor, an IR (infrared ray) or UV (ultraviolet) irradiator must be provided. In the case of a thermosetting resistor, a direct heating unit such as a hot plate or hot wire, do.

Accordingly, the roll-to-roll print etching system 1 of the present invention is configured such that the IR / UV irradiation unit, the direct heating unit, and the hot air drying unit are each modularized to form the curing unit 300, So that it can be selected freely according to

Accordingly, the roll-to-roll print etching system 1 of the present invention is provided with a plurality of printing means 200 for various printing methods such as screen printing, gravure printing, gravure offset printing, reverse offset printing, etc., And the curing unit 300 of different kinds is modularized so that the curing unit 300 can be selected according to the physical properties of the resist such as thermal curing or ultraviolet curing. It is possible to apply a variety of printing technologies using a printing apparatus, and there is no need to transfer the printing apparatus to another apparatus in the middle of the process, thereby simplifying the process.

On the other hand, the etching unit 400 etches the conductive film 3 formed in the remaining area where the print register 4 is not printed on the web 2 that has passed through the curing unit 300.

The etching means 400 may be configured to perform a wet etching method using an etching solution or a dry etching method using a plasma or a laser, but is not limited thereto.

If wet etching is used, the etching solution may be one or more of an aqueous solution of nitric acid (HNO 3), a mixed acid solution of phosphoric acid / nitric acid / acetic acid, hydrogen peroxide, perchloric acid, hydrochloric acid, hydrofluoric acid and oxalic acid, An additive for etching the conductive film 3 and other elements may be added. However, the present invention is not limited to this, and a known etching solution for the conductive film 3 may be used.

The stripping means 500 removes the print register 4 on the web 2 that has passed through the etching means 400 and removes the print register 4 covering the pattern side to be finally formed from the etching solution Can be removed.

The cleaning means 600 removes a kind of residue by cleaning the web 2 that has passed through the strip means 500.

1, the roll-to-roll print etching system 1 of the present invention may further include a work table roll 800 that supports the web 2 supplied from the first unwinder 100 .

The work table roll 800 may be provided between the first unwinder 100 and the etching means 400 and may include the printing means 200, the hardening means 300, the etching means 400, May further be provided between the means (500) and the cleaning means (600).

Since the roll-to-roll print etching system 1 of the present invention is integrally formed with the means for performing various processes, it is possible to prevent the web 2 from being stuck to the bottom of the process, The work table roll 800 may be provided.

At this time, the work table roll 800 may support the lower side of the web 2, or may be a pair of rolls which are in contact with the upper and lower surfaces of the web 2 and rotate together.

In particular, the roll-to-roll print etching system 1 of the present invention is characterized in that the printing means 200, the curing means 300, the etching means 400 and the cleaning means 600 are connected to the web 2, the printing means 200 and the curing means 300 are disposed on the upper side of the web 2, and the etching means 400, the strip means 500, and the cleaning means 300, (600) may be disposed below the web (2).

Since the printing means 200 is transferred on the upper side of the web 2, pattern transfer is generally performed on the upper side of the web 2. The curing means 300, when irradiated with ultraviolet rays or infrared rays, , But it may be located on the side surface or the lower surface in the case of direct heating or hot air drying.

Therefore, if necessary, the positions of the printing means 200 and the curing means 300 can be variously changed.

The etching means 400, the strip means 500 and the cleaning means 600 may be configured such that a solvent such as an etching solution or washing water is contained in the container, The case is common.

On the other hand, the roll-to-roll print etching system 1 of the present invention can be applied to a continuous-type continuous supplying system and a stop-and-go system in which feeding and pausing are repeated Can be supplied in one way.

Referring to FIG. 2, a process using the roll-to-roll print etching system 1 according to the present invention will be described.

First, the web 2 is supplied from the first unwinder 100 to the printing means 200, and a conductive film 3 is formed on the upper side of the web 2 at this time.

The printing means 200 transfers the print register 4 onto the web 2 according to a pattern formed on the surface of the master roll.

Next, the web 2 is passed through the curing means 300, at which time the surface print register 4 is cured via heat or UV / IR.

Next, the conductive film 3 located in the remaining region where the cured print register 4 is not formed on the web 2 is removed through the etching means 400.

Next, the web 2 is removed from the print register 4 via the strip unit 500, and finally, the pattern is transferred through the cleaning unit 600, thereby completing the pattern transfer.

Briefly summarized, the present invention facilitates PR printing, heat treatment, mask mounting, exposure and development processes to an electronic printing process by allowing the printing register 4 to be printed on a web 2 type substrate using an electronic printing system Since the etching means 400 is integrally formed, the etching process can be performed immediately, and the process time can be greatly shortened.

The roll-to-roll print etching system 1 of the present invention includes a tension controller 700 for adjusting the tension of the web 2 transferred between the first unwinder 100 and the first winder 110, ). ≪ / RTI >

In a typical roll-to-roll print etching system 1, when a web-shaped substrate is printed and cured, the web undergoes expansion and contraction due to heat at the time of curing, so that overlay accuracy can not be achieved when superimposing the next layer.

Particularly, since the roll-to-roll print etching system 1 is subjected to printing and curing by applying a tensile force to the roll-to-roll printing, the roll-to-roll printing etching system 1 is stretched in the roll-to-roll direction and then reduced again through the cooling process, .

Therefore, the roll-to-roll print etching system 1 of the present invention adjusts the degree of tension of the web by adjusting the tensile force of the web through the tension adjuster 700 for accurate superimposed printing, thereby enabling precise superimposed printing.

In other words, the roll-to-roll print etching system 1 of the present invention causes the web 2 to be tensioned due to the mutual pulling force of the first unwinder 100 and the first winder 110 The web 2 is stretched when heat is applied from the curing unit 300. The first web 110 is wound on the first web 110 and the second web 110 is wound on the second web 110, A deviation is generated between the pulling distance of the web 2, that is, the distance of conveyance distance set for the conveyance of the web 2 and the distance at which the web 2 is actually conveyed.

Therefore, the roll-to-roll print etching system 1 of the present invention requires precise alignment for controlling the position of the web 2, and may be formed to include the tension adjuster 700 for this purpose.

The tension controller 700 may include a scaler 710, a tension sensor 720, a photographing unit 730, and a controller 740.

The absorber 710 is disposed between the first unwinder 100 and the printing means 200 and has a motor therein so that the cleansing film F ) And adjust the speed.

3 to 6, the infill 710 may be disposed on the upper and lower surfaces of the web 2, and may be rotated to abut against each other to push the web 2 in the advancing direction.

The tensile force sensor 720 is disposed between the absorber 710 and the printing means 200 to measure the tensile force of the web 2. The shape and method of the load cell 720 are variously modified It is possible.

The photographing unit 730 includes a second alignment mark disposed between the printing unit 200 and the first winder 110 and printed through the printing unit 200, And transmits the photographed image to the control unit 740. The control unit 740 controls the display unit 740 to display the second alignment mark.

At least one photographing unit 730 is provided, and two photographing units 730 can photograph two alignment marks.

The controller 740 controls the operation of the infuser 710, the first unwinder 100 and the first winder 110 according to the results measured by the tension sensor 720 and the photographing unit 730. [ And controls the operation.

Hereinafter, various embodiments of the aligning method of the roll-to-roll print etching system 1 of the present invention will be described again with reference to FIGS. 3 and 6. FIG.

Example 1.

The roll-to-roll print etching system 1 of the present invention shown in FIG. 3 comprises a first unwinder 100 in the traveling direction of the web 2, a first winder 100, a infiller 710, a tension sensor 720, The stripping unit 500, the cleaning unit 600, and the first winder 110 are disposed in this order from the bottom of the screen 200, the photographing unit 730, the curing unit 300, the etching unit 400,

The infuser 710 pushes the web 2, which is unwound from the first unwinder 100 at a constant speed, and adjusts the speed.

The control unit 740 controls the distance and size between the neighboring first and second alignment marks through the image photographed by the photographing unit 730 after the pattern is printed by the printing unit 200 And the alignment accuracy is measured.

Thereafter, the controller 740 improves the accuracy of the alignment by the closed loop system that changes the torque value of the first winder 110 so that the tension value changes according to the measured result.

Referring to the alignment method of the roll-to-roll printing etching system 1 of the present invention based on the embodiment shown in FIG. 3,

The method of aligning the roll-to-roll print etching system (1) of the present invention comprises the steps of: a) determining the speed at which the web (2) wound from the first unwinder (100) Adjusting step S100; b) a photographing step (S200) of photographing the second alignment mark printed by the printing means (200) and the first alignment mark formed on the web (2) by the photographing section (730); c) measuring a distance and a size between the neighboring first and second alignment marks in the control unit 740 through the image photographed by the photographing unit 730, S300); .

Thereafter, according to the aligning method of the roll-to-roll printing etching system 1 of the present invention, d) the feedback value of the torque value of the first winder 110 is adjusted according to the alignment accuracy measured by the controller 740, Step S400 may be further performed.

If the tension of the web 2 is to be increased according to the result measured in the step c), the torque value of the first winder 110 is adjusted in the feedback step S400, If the rotation speed of the drum 110 is higher than the speed of the web 2, the tension can be increased.

That is, since the web 2 having passed through the printing means 200 is usually reduced by thermal deformation, the aligning force can be adjusted by adjusting the tension force of the pulling force, thereby enabling precise overlap printing.

For example, since the modulus of elasticity of the PET film is about 3.3 to 4.0 Gpa, the controller 740 increases the thickness of the web 2 by 300 mm and a thickness of about 0.5 mm, So that the feedback is performed by means necessary for tension control.

However, if the web 2 is stretched due to thermal deformation, it can not be reduced by the tensile force. Therefore, if it is determined that the web 2 is stretched according to the resultant value measured in the step c) The size of the pattern printed by the printing means 200 is printed smaller than the original size.

That is, when the web 2 is stretched, the extent to which the web 2 is stretched is measured, and the web 2 is stamped with a small size of about 100 to 500 μm per 1 m.

Example 2.

The roll-to-roll print etching system 1 of the present invention shown in FIG. 4 comprises a first unwinder 100 in the direction of travel of the web 2, and an inflator 710, a tension sensor 720, The stripping means 500, the cleaning means 600 and the first winder 110 in that order from the side of the image forming unit 200, the photographing unit 730, the curing unit 300, the outfeeder 750, the etching unit 400, Respectively.

The outfeeder 750 is wound at a constant speed from the first unwinder 100 to push the web 2 passed through the curing means and adjust the speed of the web 2.

Describing the roll-to-roll print etching system 1 operation of FIG. 4, the absorber 710 pushes the web 2 unwound from the first unwinder 100 at a constant speed and adjusts the speed .

The control unit 740 controls the distance and size between the neighboring first and second alignment marks through the image photographed by the photographing unit 730 after the pattern is printed by the printing unit 200 And the alignment accuracy is measured.

The control unit 740 adjusts the friction force of the clutch 111 of the first winder 110 so that the tension value changes according to the measured result and outputs the first winder 110 to the web 2, To create a closed-loop system that rotates slightly faster, improving alignment accuracy.

The control unit 740 controls the distance and size between the neighboring first and second alignment marks through the image photographed by the photographing unit 730 after the pattern is printed by the printing unit 200 And the alignment accuracy is measured.

Thereafter, the control unit 740 improves the accuracy of the alignment by the closed loop system that changes the torque value of the outfeeder 750 so that the tension value changes according to the measured result.

Example 3.

The roll-to-roll print etching system 1 of the present invention shown in FIG. 5 includes a first unwinder 100 in the traveling direction of the web 2, a first winder 100, an infeeder 710, a tension sensor 720, The stripping unit 500, the cleaning unit 600, and the first winder 110 are disposed in this order from the bottom of the screen 200, the photographing unit 730, the curing unit 300, the etching unit 400,

In this case, the first winder 110 is a winder connected to the clutch 111 so that the friction force of the clutch 111 can be adjusted to adjust the tension.

Describing the roll-to-roll print etching system 1 operation of FIG. 5, the absorber 710 pushes the web 2 unwound from the first unwinder 100 at a constant speed and adjusts the speed .

The control unit 740 controls the distance and size between the neighboring first and second alignment marks through the image photographed by the photographing unit 730 after the pattern is printed by the printing unit 200 And the alignment accuracy is measured.

The control unit 740 adjusts the friction force of the clutch 111 of the first winder 110 so that the tension value changes according to the measured result and outputs the first winder 110 to the web 2, To create a closed-loop system that rotates slightly faster, improving alignment accuracy.

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 invention as defined by the appended claims. It goes without saying that various modifications can be made.

1: Roll to Roll Print Etching System
2: Web
3: conductive film
4: Print register
100: 1st un winder
110: first winder 111: clutch
200: printing means
300: Curing means
400: etching means
500: strip means
600: cleaning means
700:
710: Infiler 720: Tension sensor
730: photographing section 740:
750: Outfeeder
800: Work table roll

Claims (15)

A first unwinder for supplying the web with a web-shaped substrate wound thereon;
Printing means supplied from the first unwinder and printing a print register on a web on which an electroconductive film is formed on an upper side;
Curing means for curing the print register on the web that has passed through the printing means;
Etch means for etching the remaining region where the print register is not printed on the web passing through the curing means;
Strip means for removing print registers on the web that have passed through said etching means;
Cleaning means for cleaning the web passing through the strip means; And
A first winder disposed at a rear end of the cleaning means for winding the substrate; And wherein the roll-to-roll print etch system comprises:
The method according to claim 1,
The roll-to-roll print etching system
And a tension regulator for regulating the tension of the web fed between the first unwinder and the first winder.
3. The method of claim 2,
The tension adjuster
An inflator disposed between the first unwinder and the printing means, the inflator adjusting the speed of the web being unwound from the first unwinder;
A tension sensor disposed between the absorber and the printing means to measure the tension of the web;
A photographing unit disposed between the printing unit and the curing unit to photograph the web;
A control unit for controlling operations of the infuser, the first unwinder, and the first winder according to the results measured by the tension sensor and the photographing unit;
And wherein the roll-to-roll print etch system comprises:
The method of claim 3,
The infuser
Wherein the roller is provided on both sides of the web wound from the first unwinder and is rotated at a constant speed by a motor to push the web in the advancing direction. The method of claim 3,
The first un winder and the first winder
Wherein the motor torque or the friction force of the clutch is controlled by the control unit to adjust the tension of the web.
The method of claim 3,
The photographing unit
At least one,
Wherein the first alignment mark formed on the web and the second alignment mark printed while passing through the printing means are photographed and the photographed image is transmitted to the control unit.
The method according to claim 1,
The roll-to-roll print etching system
Wherein the printing means uses at least one of screen printing, gravure printing, gravure offset printing, and reverse offset printing.
8. The method of claim 7,
The printing means
Wherein a plurality of apparatuses for various printing methods are modularized.
The method according to claim 1,
The roll-to-roll print etching system
Wherein the curing unit is provided with a plurality of modules, each of which is modularized so that thermal curing or ultraviolet curing can be selectively performed according to physical properties of a print register printed on the web.
The method according to claim 1,
The roll-to-roll print etching system
Further comprising a work table roll for supporting the web supplied from the first unwinder,
The printing means, the curing means, the etching means, the strip means and the cleaning means are arranged on the horizontal path of the web passing through the work table roll,
The printing means and the curing means are disposed on the upper side of the web,
Wherein the etching means, the strip means and the cleaning means are disposed on the underside of the web.
The method according to claim 1,
The roll-to-roll print etching system
A continuous or a stop and go method is applied to feed the web from the first unwinder.
The method of aligning a roll-to-roll print etching system according to any one of claims 1 to 11,
a) a rate controlling step in which the web fed from the first unwinder is controlled in the unwinding speed by the absorber;
b) a photographing step of photographing the second alignment mark printed by the printing means and the first alignment mark formed on the web by the photographing section;
c) measuring a distance and a size between adjacent first alignment marks and second alignment marks in the control unit to measure alignment accuracy through an image taken from the photographing unit; Wherein the etch amount is less than the etch depth.
13. The method of claim 12,
The method of aligning the roll-to-roll print etching system
d) a feedback step of adjusting a torque value of the first winder according to the alignment accuracy measured by the control unit, or adjusting a frictional force of the clutch formed in the first winder; Wherein the etch rate of the roll-to-roll print etch system is greater than the etch depth of the etch mask.
14. The method of claim 13,
The method of aligning the roll-to-roll print etching system
When the tensile force of the cliché film is to be increased according to the measured value measured in the measuring step,
In the feedback step
Wherein the tension is increased when the rotational speed of the first winder is higher than the speed of the web by adjusting the torque value of the first winder or the frictional force of the clutch.
14. The method of claim 13,
The method of aligning the roll-to-roll print etching system
If it is determined that the web is increased according to a result of measurement in the measurement step,
And the size of the pattern printed by the printing means is printed smaller than the original size.

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