KR20130111103A

KR20130111103A - Pattern forming device of roll to roll type

Info

Publication number: KR20130111103A
Application number: KR1020120033633A
Authority: KR
Inventors: 우상록; 김번중
Original assignee: 삼한박막진공 주식회사
Priority date: 2012-03-30
Filing date: 2012-03-30
Publication date: 2013-10-10

Abstract

The present invention relates to a roll-to-roll type pattern forming apparatus using a screen, the apparatus comprising: a rotary drum for feeding a sheet on which a pattern is formed at a constant speed; A film screen having a pattern corresponding to a pattern to be formed on the sheet, the film screen being in contact with a sheet conveyed on the rotary drum at a lower portion of the rotary drum and moving in the same speed and direction as the conveyance speed of the sheet; And a pattern forming means for receiving a deposition source or a printing source and forming a pattern corresponding to the pattern of the film screen on a sheet positioned on the rotary drum. According to the present invention as described above, it is possible to provide a pattern forming apparatus capable of rapidly forming a precise pattern continuously.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pattern forming device of a roll-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pattern forming apparatus for a roll-to-roll method using a screen, and more particularly to a pattern forming apparatus capable of continuously forming patterns on an electronic parts sheet without a break in a roll-to-roll method.

Screen printing or deposition on a thin film is one of the ways to make electronic parts function. Screen printing or vapor deposition on a flexible film substrate made of PET, polyimide or the like is carried out by a wire or a folding mobile phone It is used for wiring passing through a hinge, wiring in a camera lens, and the like.

Since the pattern can be directly formed on the film by screen printing or vapor deposition, it can be applied to various fields such as a wiring board, a touch panel and a sensor, a solar battery, and a fuel cell which have to be thin and bent.

One of the methods for enhancing the efficiency of production of film devices by such screen printing or vapor deposition is the roll-to-roll method. Conventionally, screen printing or vapor deposition, which has been often done with a sheet, is performed by roll-to-roll printing, thereby continuously flowing between the devices, thereby reducing labor and loss in conveyance as well as enhancing cleanliness.

Figure 1 shows a basic configuration for a screen roll deposition apparatus in a general roll-to-roll mode.

The sheet 30 on which the electronic parts sheet 30 is wound is wound on the first winding roll 60 and the pattern 30 is unwound on the first winding roll 60 in accordance with the rotation of the cylindrical rotating drum 50, Respectively.

The sheet 30 travels along the main surface of the rotary drum 50 and is a portion where a sheet region located on the main surface of the rotary drum 50 is deposited. A deposition apparatus 10 is provided below the rotary drum 50. The deposition apparatus 10 includes a mask 11 corresponding to a pattern to be formed and a pattern forming means 13 for accommodating a deposition source.

In the conventional roll-to-roll type screen printing and vapor deposition apparatus, the pattern formation process is performed in a state where the mask 11 is fixed, and thus the pattern formation process is not substantially continuous. In the state where the rotary drum 50 is stopped, After the formation of the pattern is completed, the rotary drum 50 is operated to transfer a certain portion of the sheet.

In addition, the mask has a planar shape, but the sheet adhered to the rotary drum has a curved shape similar to that of the rotary drum, so that the patterns formed on the central portion and the edge portion of the sheet are different from each other and blurring occurs in the pattern formed on the edge portion .

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 intended to solve the problem that the pattern formation process of the roll-to-roll method is intermittently performed substantially not continuously.

Also, it is intended to solve the problem that the patterns formed on the center portion and the edge portion of the sheet are different from each other, and blurring occurs in the pattern formed on the edge portion.

It is a principal object of the present invention to provide a pattern forming apparatus capable of rapidly forming a precise pattern continuously.

According to a first aspect of the present invention, there is provided a pattern forming apparatus of a roll-to-roll type, comprising: a rotary drum for transferring a sheet on which a pattern is formed at a constant speed; A film screen having a pattern corresponding to a pattern to be formed on the sheet, the film screen being in contact with a sheet conveyed on the rotary drum at a lower portion of the rotary drum and moving in the same speed and direction as the conveyance speed of the sheet; And a pattern forming means for receiving a deposition source or a printing source and forming a pattern corresponding to the pattern of the film screen on a sheet positioned on the rotary drum. Forming device.

In the first embodiment of the present invention, the film screen is formed as an endless track having a starting end and an end connected to each other, and the film screen is brought into close contact with the lower surface of the rotating drum, And may further comprise means.

The apparatus may further include a tightening means disposed at a lower portion of the rotary drum to closely contact the film screen with the sheet positioned on the lower surface of the rotary drum in accordance with the shape of the lower end of the rotary drum.

As a second embodiment of the present invention, there is provided a second aspect of the present invention, wherein the film screen is wound on a take-up roll, and conveying means for unloading the film screen in the take-up roll and conveying the film in the same speed and direction as the sheet, And a transfer path for aligning the screen with the lower end of the rotary drum to closely contact the film screen with the sheet positioned on the lower surface of the rotary drum.

Preferably, the rotary drum is formed in a cylindrical shape and can continuously rotate without interruption.

A second characterizing feature of the present invention resides in a roll-to-roll type pattern forming apparatus comprising: a rotating drum of a regular polygonal shape for transporting a sheet on which a pattern is formed by a predetermined length after pattern formation; A mask screen having a size corresponding to one side of the regular polygon and having a pattern corresponding to a pattern to be formed on the sheet; And a pattern forming means for receiving a deposition source or a printing source and forming a pattern corresponding to the pattern of the mask screen on a sheet positioned on the rotary drum.

Preferably, the apparatus further includes a lifting means for lifting the mask screen to closely contact the sheet on the rotary drum at the time of pattern formation of the sheet, and lowering the mask string when the sheet is transported.

More preferably, the mask screen and the pattern forming means are integrally formed, and the elevating means can raise or lower the integral mask screen and the pattern forming means.

According to the present invention as described above, it is possible to provide a pattern forming apparatus capable of quickly forming a precise pattern continuously on a film or a substrate without a photolithographic process using a photosensitive material, or a dry or wet chemical etching process.

In particular, by performing the pattern forming process of the roll-to-roll method substantially continuously, the production speed can be shortened and the efficiency can be further increased.

Also, it is possible to solve the problem that the patterns formed on the center portion and the edge portion of the sheet are different from each other and the blurring phenomenon occurs in the pattern formed on the edge portion.

Fig. 1 shows a basic configuration of a general roll-to-roll type screen deposition equipment,
Fig. 2 shows a first embodiment of a pattern forming apparatus of a roll-to-roll method according to the present invention,
Figure 3 shows an improved embodiment of the first embodiment of Figure 2 above,
4 shows a second embodiment of a pattern forming apparatus of a roll-to-roll type according to the present invention,
Fig. 5 shows a third embodiment of a pattern forming apparatus of a roll-to-roll type according to the present invention,
FIGS. 6 and 7 show operation states of the pattern forming apparatus according to the third embodiment of the present invention.

In order to explain the present invention, the advantages of the configuration of the present invention and the object achieved by the practice of the present invention will be described below with reference to the preferred embodiments of the present invention.

First, the terminology used in the present application is used only to describe a specific embodiment, and is not intended to limit the present invention, and the singular expressions may include plural expressions unless the context clearly indicates otherwise. Also, in this application, the terms "comprise", "having", and the like are intended to specify that there are stated features, integers, steps, operations, elements, parts or combinations thereof, But do not preclude the presence or addition of features, numbers, steps, operations, components, parts, or combinations thereof.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The present invention discloses a pattern forming apparatus capable of continuously forming a pattern on an electronic parts sheet without interruption in a roll-to-roll method.

The present invention includes the basic structures of a pattern forming apparatus of a roll-to-roll method. Hereinafter, in order to more clearly describe the characteristic configuration of the present invention, .

A pattern forming apparatus according to the present invention includes a rotary drum for roughly conveying a sheet on which a pattern is formed at a constant speed and a pattern corresponding to a pattern to be formed on the sheet, And a deposition source or a printing source, which moves in the same speed and direction as the conveying speed of the sheet, and forms a pattern corresponding to the pattern of the film screen on the sheet positioned on the rotary drum And a pattern forming means for forming a pattern.

Fig. 2 shows a first embodiment of a pattern forming apparatus of a roll-to-roll method according to the present invention.

The first embodiment of FIG. 2 is an embodiment of a pattern forming apparatus for forming a pattern by a screen deposition method.

The sheet 30 for an electronic component is wound around the first winding roll 60 and the sheet is unwound from the first winding roll 60 in accordance with the rotation of the cylindrical rotating drum 50 to form a pattern 30 are wound on the second winding roll. The sheet 14 travels along the main surface of the rotary drum 50, and is a portion where a sheet region located on the main surface of the rotary drum 50 is deposited.

2 is a pattern forming unit 100. The film screen 110 of the pattern forming unit 100 is formed into an endless track having a start end and an end connected to each other, And rotation means 150 and 170 for rotating the film screen 110 at the same speed and direction as the sheet 30 while closely contacting the lower surface of the rotary drum 50. Here, the rotating means may be installed at both ends of the endless film form of the film screen 110 to rotate the film screen 110. In addition to the rotating means shown in FIG. 2, the tension of the film screen in the form of endless track is maintained Various types of rotating means capable of rotating the film screen 110 at the same speed as the sheet speed can be applied.

The pattern forming means 130 for accommodating the deposition source and forming a pattern corresponding to the pattern of the film screen 110 on the sheet 30 positioned on the rotary drum 50 comprises a film screen 110 ) Of the rotary drum 50 located inside the rotary drum 50.

Here, the pattern forming means 130 may be applied to various deposition type apparatuses such as electron beam deposition, thermal deposition, sputter deposition, ion beam deposition, and pulse laser deposition.

2, a portion where the endless film-type film screen 110 is in close contact with the sheet 30 is narrow, so that a difference may occur in the patterns formed at the central portion and the edge portion of the sheet 30 at the time of forming the pattern, FIG. 3 shows an improved embodiment of the first embodiment of FIG. 2, in which the present invention improves this by adding a contact means.

3, the description of the basic structure of FIG. 3 is the same as that of the first embodiment of FIG. 2. Therefore, the description of FIG. 3 is omitted. Two guide rollers are provided at the lower end of the rotary drum 50 as a contact means for closely adhering the screen 110 to a sheet positioned on the lower surface of the rotary drum 50. [

The sheet 30 positioned on the lower end surface of the film screen 110 and the rotary drum 50 is closely contacted with the curved shape of the lower end of the rotary drum 50 by the tight contact means of the guide roller, .

Fig. 4 shows a second embodiment of a pattern forming apparatus of a roll-to-roll method according to the present invention.

The structure of the rotary drum 50 and the like for conveying the sheet 30 in the second embodiment of FIG. 4 is the same as that of the first embodiment shown in FIG. 2, so that a description thereof will be omitted.

Referring to the pattern forming unit 200, which is characteristic in the second embodiment of FIG. 4, the film screen 210 is wound on a take-up roll, and the film screen is unwound from the take-up roll, And the conveying means (250, 270) for conveying the sheet in the same speed and direction as the sheet. In FIG. 4, the winding roll and the conveying means are shown in the same manner, .

The film screen 210 unwound from the screen winding roll 250 is aligned with the lower end of the rotary drum 50 and the film screen 210 is brought into close contact with the sheet 30 positioned on the lower surface of the rotary drum 50, In FIG. 4, a conveying path is formed by two guide rollers at the lower end of the rotary drum 50.

According to the first and second embodiments described above, it is possible to form a pattern on the sheet 30 while the cylindrical rotary drum 50 is continuously rotated without interruption.

The present invention also discloses a pattern forming apparatus of a roll-to-roll method using a mask screen of a metal or the like which is not bent in addition to a flexible film screen. Fig. 5 shows a third embodiment of a pattern forming apparatus of a roll- Respectively.

In FIG. 5, the rotating drum 400 is formed in a regular hexagon, and a rotating drum having a regular polygonal shape may be formed according to the pattern to be formed and the size of the sheet.

The hexagonal rotating drum 400 is arranged such that one side thereof is aligned parallel to the mask screen 310 and the pattern forming means 330 during the pattern formation of the sheet 30, As shown in Fig.

The mask screen 310 and the pattern forming means 330 are sequentially disposed below the regular rotating drum 400. The mask screen 310 and the pattern forming means 330 are integrally formed .

6 shows an operation diagram during pattern formation, and Fig. 7 shows an operation diagram during sheet transfer after pattern formation. Fig. 6 shows the operation of the pattern forming apparatus according to the third embodiment.

Referring to FIG. 6, the operation of the pattern forming unit 300 will be described with reference to FIG. 6, in which one side of the regular rotating drum 400 is parallel to the pattern forming unit 300, ) Is brought into close contact with the sheet 30 on the rotating drum 400 having a regular hexagonal shape.

When the pattern forming process is completed after the pattern forming process is performed in the state where the integral pattern forming unit 300 is lifted, the sheet is transported for pattern formation of the next sheet portion. Shaped pattern forming portion 300 is lowered by a certain distance and the rotating drum 400 having a regular shape is rotated until the sheet positioned on the next surface is positioned parallel to the integral pattern forming portion 300 do.

5 to 7, the mask screen 310 and the pattern forming means 330 may be provided on the mask screen 310 and the pattern forming means 330, The elevating means can be constituted by a lifting actuator, a hydraulic or pneumatic cylinder capable of raising or lowering the lifting means by a predetermined distance.

As described above, according to the present invention, it is possible to remove a photolithography process such as exposure or development, a chemical etching process of a dry or wet process, and to form a precise pattern continuously and quickly, thereby improving productivity, .

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments described in the present invention are not intended to limit the technical idea of the present invention but to explain, and the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

30: Sheet, 50: Cylindrical rotary drum,
60, 70: wound roll,
110, 210: film screen, 130, 230, 330: pattern forming means,
150, 170: rotating means,
310: mask screen, 400: hexagonal rotating drum.

Claims

In a pattern forming apparatus of a roll-to-roll method,
A rotary drum for conveying the sheet on which the pattern is formed at a constant speed;
A film screen having a pattern corresponding to a pattern to be formed on the sheet, the film screen being in contact with a sheet conveyed on the rotary drum at a lower portion of the rotary drum and moving in the same speed and direction as the conveyance speed of the sheet; And
And a pattern forming means for receiving a deposition source or a printing source and forming a pattern corresponding to the pattern of the film screen on a sheet positioned on the rotary drum. Device.

The method of claim 1,
The film screen may comprise:
The starting end and the end are formed into an endless track connected to each other,
Further comprising rotating means for bringing the film screen in close contact with the lower surface of the rotary drum and rotating the film screen at the same speed and direction as the sheet.

3. The method of claim 2,
Further comprising a tightening means positioned at a lower portion of the rotary drum and closely contacting the film screen to a sheet positioned on a lower surface of the rotary drum in accordance with the shape of the lower end of the rotary drum.

The method of claim 1,
A conveying means for winding the film screen on a take-up roll and unrolling the film screen in the take-up roll to convey the film in the same speed and direction as the sheet; And
Further comprising a conveying path for aligning the film screen unwound from the screen winding roll to a shape of a lower end of the rotary drum to closely contact the film screen to a sheet positioned on a lower surface of the rotary drum, Device.

The method according to any one of claims 1 to 4,
Wherein the rotary drum is formed in a cylindrical shape and continuously rotates without interruption.

In a pattern forming apparatus of a roll-to-roll method,
A rotary drum having a regular polygonal shape for transporting a sheet on which a pattern is formed by a predetermined length after pattern formation;
A mask screen having a size corresponding to one side of the regular polygon and having a pattern corresponding to a pattern to be formed on the sheet;
And pattern forming means for receiving a deposition source or a printing source and forming a pattern corresponding to the pattern of the mask screen on a sheet positioned on the rotary drum.

The method according to claim 6,
Further comprising an elevating means for elevating the mask screen so as to closely contact the sheet on the rotary drum at the time of pattern formation of the sheet and to lower the mask string when the sheet is conveyed, Forming device.

The method of claim 7, wherein
The mask screen and the pattern forming means are integrally formed,
Wherein the elevating means raises or lowers the integral mask screen and the pattern forming means.