KR102137278B1 - Method of manufacturing roll to roll FPCB with high speed punching - Google Patents

Abstract

The present invention relates to a high speed puncher interlinked precise roll-to-roll material flexible circuit board manufacturing method and to a roll-to-roll material flexible circuit board manufacturing method, comprises: a first high speed punching step of laminating a transparent roll-to-roll removal film with a blue roll-to-roll removal film, and regularly forming standardized guide holes on both side edge portions of the width direction of the roll-to-roll material removed by rapidly punching a primary shape of a product; a second high speed punching step of laminating a polyimide film on the roll-to-roll material, produced in the first high speed punching step, by a hot melted adhesive and rapidly punching and removing a patterned terminal shape; and a pattern etching step of thermally laminating the roll-to-roll material, produced in the second high speed punching step, with a metal layer, again thermally laminating an exposure film thereon, exposing, developing and etching a fine and precise pattern, separating unnecessary portions, performing a washing operation and a drying operation, then marking defected portions when the pattern is inspected, and performing a winding operation, thereby repetitively forming a fine pattern by the high-speed punching, easily mass-producing the precise patterns at low manufacturing costs by using an etching method, and preventing the patterns from being easily disconnected even when a shock is applied.

Description

Method of manufacturing roll to roll FPCB with high speed punching}

The present invention relates to a method for manufacturing a flexible rolled-board material of a high-speed punching machine-linked precision roll-to-roll material, and more specifically, interlocking with a high-speed punching machine that removes unnecessary parts of a flexible circuit board (FPCB) that enters parts of a small product such as a mobile phone. As a result, a fine circuit pattern is repeatedly formed on a flexible circuit board in a continuous roll state without error, and mass production is easy without defects even in a low production cost environment, and the pattern does not break even when an impact such as dropping is applied. The present invention relates to a method for manufacturing a flexible circuit board of a high-speed punching machine interlocking-type precision roll-to-roll material that does not separate patterns.

Recently, various electronic devices including mobile communication mobile phones (portable terminals) have been developed to be compact and lightweight.

On the other hand, flexible printed circuit boards or FPCBs are electronic components developed according to miniaturization and weight reduction of electronic products, and are widely used as core components of all electronic devices because of their excellent workability and strong heat resistance, bending resistance, and chemical resistance. .

Mobile phones have a relatively small internal area (capacity), and all parts used are small in size and light in general. In the case of a printed circuit board (PCB) that mounts various electronic components, it is free to mount easily in a small internal area. Flexible printed circuit boards (FPCBs), which allow various signals and electric energy to flow well as they are bent, are mainly used. In the following description, the flexible circuit board may include a material performing a specific function while being thin, such as a touch screen panel, a back light unit (BLU), a gasket, a cosmetic mask pack, and a medical band. have.

The antenna, which is an essential electronic component in wireless devices, is also produced by forming a pattern on a flexible printed circuit board and removing unnecessary parts by punching (punching) to produce it, and as the demand increases, the flexible printed circuit board is roll-to-roll. It is composed of materials and mass-produced, and a high-speed punching machine is used to remove unnecessary parts except for the necessary patterns.

On the other hand, the pattern to be formed on the roll-to-roll material is determined in advance by design and manufactured precisely, so it is a very common process method to first perform a punching process to remove unnecessary parts.

In the punching process, when foreign substances are generated in the roll-to-roll material and these foreign substances are introduced into the exposure process of forming a pattern on the photosensitive film, there is a problem of increasing the defect rate of the miniaturized and precisely produced pattern.

As a prior art that partially solved these problems, it is based on Korean Patent Registration No. 10-1595026 (February 11, 2016), and there is'FPCB for NFC antenna (FPCB) and a manufacturing method thereof'.

1 is a configuration diagram illustrating an FPC manufacturing method according to an embodiment of the prior art.

Hereinafter, with reference to the accompanying drawings in detail to describe the prior art, the first conductive film is attached to the carrier film 122 to form the first conductive patterns 113 and 113a, and the first conductive patterns 113 and 113a The magnetic sheet 114 is attached to the carrier film 122 and the body FPC 110 is manufactured, and the head FPC 120 and the first conductive patterns 113 and 113a having terminals are formed. ) Is electrically connected, and the head FPC 120 and the body FPC 110 are combined.

The prior art has the advantage of producing a flexible circuit board of a multi-layered layer by a simple manufacturing process, but there is still a problem that it is not possible to precisely produce a large-scale pattern at a high speed and at a low production cost.

On the other hand, in a conventional flexible printed circuit board (FPCB) production system, the raw material is hard, and the production cost was high due to problems such as easy separation and separation of patterns when forming a pattern on a curved surface.

In addition, since the conventional metal foil antenna (MFA) method forms a pattern with a press mold, it is difficult to implement a fine pattern, requires a lot of mold cost, and is very difficult to deform, so that initial development cost is very high.

In addition, the laser marking antenna (LMA) method is a plating method after laser marking, and when an impact is applied due to dropping of a finished product, there is a problem that a crack is generated in an injection material and a pattern is cut off.

Therefore, using roll-to-roll material to lower the production cost, the pattern separation phenomenon does not occur on the curved surface of the material, and it is very easy and easy to modify and deform the pattern formed finely and precisely, and when an impact due to dropping is applied It is necessary to develop a technology that does not break the Edo pattern and facilitates mass production.

Republic of Korea Patent Registration No. 10-1595026 (2016. 02. 11.)'FPCB for NFC antenna and manufacturing method thereof'

In order to solve the problems and necessities of the prior art as described above, the present invention is formed by forming a fine pattern by repeated high-speed punching, and easily mass-producing a precise pattern at low manufacturing cost using an etching method, and when an impact is applied. It is an object of the present invention to provide a method for manufacturing a flexible circuit board of a high-speed punching machine interlocking-type precision roll-to-roll material that does not easily break a pattern.

On the other hand, the present invention is a high-speed punching machine interlocking precision roll-to-roll material flexible circuit board manufacturing method including both the advantages of easy mass production of flexible printed circuit boards (FPCB) and the precision of a laser marking antenna (LMA) type printed circuit board. Its purpose is to provide.

The high-speed punching machine interlocking precision roll-to-roll material flexible circuit board manufacturing method of the present invention for achieving the above object is in a roll-to-roll material flexible circuit board manufacturing method, a transparent roll-to-removal film and a blue roll-to-roller remover A first high-speed punching step of uniformly forming standardized guide holes on both edges in the width direction of the roll-to-roll material removed by high-speed punching of the primary shape of the product after laminating the film; A second high-speed punching step of laminating a polyimide film with a hot-melt adhesive to the roll-to-roll material produced in the first high-speed punching step and removing the terminal shape of the pattern by high-speed punching; Thermally laminating the roll-to-roll material and metal layer produced in the second high-speed punching step, again laminating the exposure film, exposing and developing fine and precise patterns, etching, peeling off unnecessary parts, washing and drying, and defective parts during pattern inspection Pattern etching step of winding by marking the; It may include.

A third high-speed punching step of laminating the adhesive roll-to-roll material to the roll-to-roll material produced in the pattern etching process at a high speed and removing the part excluding the pattern by high-speed punching; A release paper punching step of laminating release paper separating the pattern formed on the roll-to-roll material produced in the third high-speed punching step and high-speed punching to remove the remaining parts; A marking printing step of printing with the oil-based ink on the roll-to-roll material produced in the release step; It may further include.

The transparent roll-to-removal film has a thickness of 0.05 t and the adhesive force is a tensile force of 200 grams per square centimeter, and the blue roll-to-removal film can be made of a regular blue tape having a thickness of 0.05 t.

The polyimide film has a thickness of 0.025 t, the hot-melt adhesive has a thickness of 0.005 t, and the adhesive force can be made with a tensile force of 3500 grams per square centimeter.

The metal layer has a configuration in which both surfaces of copper are nickel-plated, and the total thickness may be 0.018 t.

The etching may be performed by spraying an etching solution.

The adhesive roll-to-roll material has a thickness of 0.05 t and the adhesive force can be achieved with a tensile force of 3500 grams per square centimeter.

The release paper may have a thickness of 0.075 t.

The high speed punch interlocking roll-to-roll material exposure system of the present invention for achieving the above object includes: a transfer table (2000) for guiding the roll-to-roll material (950) to be horizontally conveyed from the top surface; A first foreign matter removal unit 3000 installed on a part of the front end of the transfer table 2000 and removing foreign matters attached to the roll-to-roll material 950 surface by a corresponding control signal; It is installed at the next stage of the first foreign matter removal unit 3000 and sequentially inserts a number of pins into a plurality of holes continuously formed at both ends in the width direction of the roll-to-roll material 950, and the control signal of the roll-to-roll material 950 is performed. A first pinhole guide roller (5000) for adjusting the feeding interval; A first roller tension unit (6000) for measuring and adjusting the transfer speed of the roll-to-roll material (950) installed between the rollers installed at the next stage of the first pinhole guide roller (5000) and disposed vertically by the corresponding control signal. ); It is the next stage of the first roller tension part 6000 and is installed at the center position of the transfer table 2000 and stops the transfer of the roll-to-roll material 950 by a corresponding control signal, and is a master film for pattern formation by air suction A material exposure unit 7000 that is in close contact with and drives the exposure lamp; It may include.

A second foreign substance removal unit 4000 installed at a next stage of the first foreign substance removal unit 3000 to physically remove foreign substances attached to the surface of the roll-to-roll material 950; A second roller tension unit (6500) which is installed at the next stage of the material exposure unit (7000) and measures and adjusts the transfer speed of the roll-to-roll material (950) transferred between rollers placed up and down by a corresponding control signal; It is installed at the next end of the second roller tensioning part 6500 and sequentially inserts a number of pins into a plurality of holes continuously formed at both ends in the width direction of the roll-to-roll material 950, and the control signal of the roll-to-roll material 950 is performed. A second pinhole guide roller (5500) for adjusting the feeding interval; It may further include.

An unwinding guide table 1000 installed at the front end of the conveying table 2000 and withdrawing the roll-to-roll material 950 wound on the unwinding winder UW in a flat state and supplying it to the conveying table 2000; A third foreign matter removal unit 4500 installed on the next stage of the second pinhole guide roller 5500 and physically removing foreign matter attached to the surface of the roll-to-roll material 950 to transfer it to the winding winder RW; It may further include,

A roll-to-roll exposure control unit 8000 installed on a lower portion of the transfer table 2000, connected to each functional unit constituting a system, and outputting a corresponding control signal by driving an operating program and monitoring an operating state; It may further include.

The high-speed punching machine interlocking roll-to-roll exposure system, while enclosing the entire interior to block the inflow of light from the outside, and filter the outside air to force it into the dark cabinet section (9000); It may further include.

The roll-to-roll exposure control unit 8000 outputs a control signal to the first roller tension unit 6000 and the second roller tension unit 6500, respectively, and measures the transfer speed of the roll-to-roll material 950 transferred from each. And the roller push of the first roller tension unit 6000 and the second roller tension unit 6500 so that the transfer speed by the second roller tension unit 6500 is faster than the transfer speed by the first roller tension unit 6000. It may be configured to output a corresponding control signal to adjust to increase or decrease the pressure, respectively.

The first roller tension part 6000 has a cylindrical shape as a whole, a rotation center shaft, and an upper pressing roller 6010 rotating by friction; A lower rotating roller (6020) having a rotational central axis on a vertical vertical line of the upper pressing roller (6010), having a cylindrical shape as a whole, and receiving rotational power to the rotational central axis to rotate; A roller press air cylinder (6030) which is connected to a rotational center shaft of the upper press roller (6010) and is provided with a piston rod that is extended or expanded by a corresponding control signal of the roll-to-roll exposure control unit (8000); It may include.

A transfer servo motor 6040 that is installed on the central axis of rotation of the lower rotating roller 6020 and rotates the lower rotating roller 6020 while rotating according to a corresponding control signal of the roll-to-roll exposure control unit 8000; The roller pressing pressure detection sensor (6050) installed in contact with the rotational central axis of the upper pressing roller (6010) and notifying the roll-to-roll exposure control unit (8000) by detecting the strength of the pressing force of the upper pressing roller (6010) downward. ); A material transfer speed detection sensor 6060 that detects the transfer speed of the roll-to-roll material 950 according to the control signal of the roll-to-roll exposure control unit 8000; It may include.

The material exposure unit 8000 includes an exposure lamp 7100 that emits ultraviolet (UV) light by a corresponding control signal from the roll-to-roll exposure control unit 8000; A material pressing seating film 7200 installed on the upper exposure lamp 7102 of the exposure lamp 7100, made of a transparent film, and pressing and fixing the roll-to-roll material 950 from the upper side; A guide piston pin seating groove 7300 installed on the edge of the upper exposure lamp 7102 and seated so as not to move by inserting a material exposure guide piston pin 7500; A seating film suction groove (7400) installed on a rim of the lower exposure lamp (7104) of the exposure lamp (7100) and communicating with it, and strongly suctioning adjacent objects by an external suction; It may include.

It is installed on the rim of the lower exposure lamp 7104, is disposed at the outer position of the seating film suction groove 7400, and material exposure consisting of a piston and a pin that moves up and down by corresponding control signals of the roll-to-roll exposure control unit 8000. Guide piston pin (7500); A seating film pressing packing rubber (7600) formed on an edge of the lower exposure lamp (7104) and formed in a space between the seating film suction groove (7400) and the material exposure guide piston pin (7500); A disc glass master film 7700, which is disposed in close contact with the upper surface of the lower exposure lamp 7104, is made of glass, and is provided with a master film having the same disc pattern as the circuit pattern to be formed in the roll-to-roll material 950; It may include.

The present invention having the above configuration has the advantage of repeatedly forming a fine pattern by high-speed punching and easily mass-producing a precise pattern at a low manufacturing cost using an etching method and not easily disconnecting the pattern even when an impact is applied.

On the other hand, the present invention having the above configuration includes both advantages of easy mass production, such as a flexible printed circuit board, and easy production of a precise pattern, such as an LMA type printed circuit board.

1 is a configuration diagram illustrating an FPC manufacturing method according to an embodiment of the prior art,
2 is a functional configuration diagram of a roll-to-roll material exposure system interlocked with a high-speed punch machine according to an embodiment of the present invention,
3 is a pinhole guide roller configuration diagram according to an embodiment of the present invention,
4 is a detailed configuration diagram of the roller tension unit according to an embodiment of the present invention,
5 is a partial plan view of the material exposure part according to an embodiment of the present invention,
6 is a partial cross-sectional view of a material exposure part according to an embodiment of the present invention,
7 is a partial plan configuration diagram of a roll-to-roll material exposure system interlocked with a high-speed punch machine according to an embodiment of the present invention,
8 is a block diagram of a darkroom cabinet according to an embodiment of the present invention,
9 is a flow chart for explaining a method for manufacturing a flexible circuit board of a high-speed punching machine interlocking-type precision roll-to-roll material according to an embodiment of the present invention;
10 is a state diagram produced by a method for manufacturing a flexible circuit board of a high-speed punching machine interlocking-type precision roll-to-roll material according to an embodiment of the present invention,
And
11 is a real-world photograph produced by a method for manufacturing a flexible circuit board of a high-speed punching machine interlocking-type precision roll-to-roll material according to an embodiment of the present invention.

The present invention can be applied to a variety of transformations and may have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all conversions, equivalents, and substitutes included in the spirit and scope of the present invention. In the description of the present invention, when it is determined that a detailed description of known technologies related to the present invention may obscure the subject matter of the present invention, the detailed description will be omitted.

Hereinafter, the roll-to-roll material and the material have the same meaning and will be selectively used according to the context.

FIG. 2 is a functional configuration diagram of a roll-to-roll material exposure system interlocked with a high-speed punch machine according to an embodiment of the present invention, and FIG. 3 is a configuration diagram of a pinhole guide roller according to an embodiment of the present invention, and FIG. 4 is According to an embodiment of the present invention is a detailed configuration diagram of the roller tension unit, Figure 5 is according to an embodiment of the present invention is a partial plan view of the material exposure unit, Figure 6 is according to an embodiment of the present invention 7 is a partial plan view of a material exposure section, and FIG. 7 is a plan view of a partial plan view of a roll-to-roll material exposure system interlocked with a high-speed punch machine, and FIG. 8 is according to an embodiment of the present invention. It is a diagram of the darkroom cabinet.

Hereinafter, a detailed description will be given with reference to all the attached drawings. The high speed punching machine interlocking roll-to-roll material exposure system 900 includes an annealing guide table 1000, a transfer table 2000, a first foreign matter removal unit 3000, and a second. The foreign substance removal unit 4000, the first pinhole guide roller 5000, the first roller tension unit 6000, the material exposure unit 7000, the second roller tension unit 6500, and the second pinhole guide roller 5500, It is configured to include a third foreign matter removal unit 4500, a roll-to-roll exposure control unit 8000, and a darkroom cabinet unit 9000.

The unwinding guide table 1000 is made of a rubber material, and at least four rollers having friction force are provided, and each rubber roller rotates at a uniform speed according to a corresponding control signal of the roll-to-roll exposure control unit 8000, so that the unwinder ( UW) roll-to-roll material 950 is taken out and supplied in a flat state.

The transfer table 2000 has an upper surface formed horizontally, and is connected to the end of one end of the transfer guide table 1000 by being inclined downward in the direction of the loosening winder UW, and roll-to-roll supplied from the loosening guide table 1000. The material 950 is guided to be horizontally transferred from the top surface.

The first debris removal unit 3000 is installed on a part of the front end of the transfer table 2000 and primaryly removes foreign substances attached to the surface of the roll-to-roll material 950 by a corresponding control signal applied from the roll-to-roll exposure control unit 8000 ( Step 1).

The first foreign substance removal unit 3000 is configured to remove foreign substances having a size of 0.1 to 1 micrometer (um) by plasma while emitting a high voltage of 1000 to 2000 volts (V) made of an ion bar, Since it is well known in general, further detailed description will be omitted. That is, the first foreign substance removal unit 3000 removes the foreign substances attached to the surface of the roll-to-roll material 950 in a first step (primary) by a corresponding control signal from the roll-to-roll exposure control unit 8000.

The second foreign substance removal unit 4000 is installed at the next stage of the first foreign substance removal unit 3000 and physically removes foreign substances attached to the surface of the roll-to-roll material 950 and is secondarily removed (second stage).

The second debris removal unit 4000 is composed of two rubber rollers installed in a closely connected state up and down, and the two rubber rollers rotate when an external force is applied by non-power, and each rubber roller is The surface is relatively adhesive, so it is removed by adsorbing foreign substances. That is, the second foreign substance removing unit 4000 is removed by adsorbing foreign substances on the upper and lower surfaces of the roll-to-roll material 950 while rotating by the roll-to-roll material 950 transferred between the two rubber rollers. Therefore, the foreign material is removed in two steps (secondary).

Since the third foreign matter removal unit 4500 is provided in the same manner as the second foreign matter removal unit 4000 and has the same function, it will not be described in detail below, but the characteristic operation will be described separately.

The third foreign matter removing unit 4500 removes foreign substances from the upper and lower surfaces of the roll-to-roll material 950 while rotating, so that foreign substances are removed by the third step (third).

The first pinhole guide roller 5000 is sequentially installed at the next stage of the second foreign substance removal unit 4000 and is provided in itself in a roller guide hole 960 formed continuously on both side portions of the roll-to-roll material 950 in the width direction. While sequentially inserting the roller guide pin 5010, the roll-to-roll material 950 is transported along the transport table 2000, but guides to prevent positional variation in the width direction.

In the first pinhole guide roller 5000, a plurality of roller guide pins 5010 protruding outward in a radial direction are disposed at uniform intervals (a), as shown in the attached FIG. 3, and each roller guide pin 5010 is The distance (a) at the tip portion protruding relative to the central axis is 9.5 millimeters and is arranged and installed to maintain an error of 0.05 millimeters, and the tip portion of each roller guide pin 5010 is a roller guide of a roll-to-roll material 950 The cross section has an elliptical shape to be easily inserted into the hole 960 and easily removed.

The roller guide hole 960 of the roll-to-roll material 950 is designated as a piston pin guide hole 970 every thirteenth.

Since the second pinhole guide roller 5500 is provided in the same manner as the first pinhole guide roller 5000 and has the same function, it will not be described in detail below, but the characteristic operation will be described separately.

The first roller tension unit 6000 measures the transfer speed of the roll-to-roll material 950 that is sequentially installed at the next stage of the first pinhole guide roller 5000 and transferred between rollers placed up and down by a corresponding control signal. It also controls the feed rate.

The first roller tension unit 6000 includes an upper pressing roller 6010, a lower rotating roller 6020, a roller pressing air cylinder 6030, a transfer servo motor 6040, a roller pressing pressure detection sensor 6050, and a material feeding speed. It is configured to include a detection sensor 6060.

The upper pressing roller 6010 and the lower rotating roller 6020 are located on a vertical straight line in the vertical direction of their respective rotational centers, and have a cylindrical shape as a whole, and the outer surfaces of the cylindrical shapes are in close contact with each other and rubbed to rotate in opposite directions. It is installed as much as possible and each cylindrical outer part is made of rubber material.

The roller press air cylinder 6030 is configured such that a piston rod that is extended or expanded by the corresponding control signal of the roll-to-roll exposure control unit 8000 is connected to the rotation center shaft of the upper press roller 6010. The roller pressing air cylinder 6030 moves the upper pressing roller 6010 downward by adjusting the corresponding control signal of the roll-to-roll exposure control unit 8000, or adjusts the pressing strength low by moving upward. do.

The transfer servo motor 6040 is installed to be axially connected to the rotational central axis of the lower rotating roller 6020 and rotates by the corresponding control signal of the roll-to-roll exposure control unit 8000 and rotates the lower rotating roller 6020. It consists of a servo motor whose rotation speed is adjusted by a control signal.

The transfer servo motor 6040 is relatively preferably controlled to rotate based on 250 RPM.

The roller pressing pressure detection sensor 6050 is installed to contact the rotation center axis of the upper pressing roller 6010, and detects the strength of the pressing force of the upper pressing roller 6010 in the downward direction to the roll-to-roll exposure control unit 8000. It is a configuration to notify.

The material transfer speed detection sensor 6060 detects the roller guide hole 960 of the roll-to-roll material 950 according to the corresponding control signal of the connected roll-to-roll exposure control unit 8000 and detects the transfer speed of the roll-to-roll material 950 It is a configuration. The material transfer speed detection sensor 6060 outputs an optical signal and receives an optical signal from which the output optical signal is reflected and returned to the transfer table 2000. The method of detecting the transfer speed of the roll-to-roll material 950 is relatively comparative. desirable. However, it is very natural that the roll-to-roll material 950 may be provided in a configuration that detects the feed rate of the roll-to-roll material 950 in other ways as necessary.

Since the second roller tension unit 6500 is provided in the same manner as the first roller tension unit 6000 and has the same function, it will not be described in detail below, but the characteristic operation will be described separately.

The transfer servo motor 6040 configured in the first roller tension unit 6000 and the transfer servo motor 6040 configured in the second roller tension unit 6500 are respectively controlled by corresponding control signals of the roll-to-roll exposure control unit 8000. The rotation speed may be different.

In one embodiment, the transfer servo motor 6040 configured in the second roller tension unit 6500 according to the control signal of the roll-to-roll exposure control unit 8000 transfers the roll-to-roll material 950 to 1000 millimeters per minute (mm). In addition, the transfer servo motor 6040 configured in the first roller tension unit 6000 by the control signal of the roll-to-roll exposure control unit 8000 rotates so that the roll-to-roll material 950 transports 999 millimeters per minute. do.

The roll-to-roll exposure control unit 8000 detects (measures) the feed speed value of the material transfer speed detection sensor 6060 provided in the first roller tension unit 6000 and transfers the material provided in the second roller tension unit 6500. The feed rate value detected and measured (measured) by the material feed speed detection sensor 6060 provided in the first roller tension unit 6000 is analyzed by receiving and analyzing the feed speed value detected and measured by the speed detection sensor 6060, respectively. Each transfer servo motor is controlled to have a faster value.

Therefore, the first roller tension section 6000 is positioned between the second roller tension sections 6500 and the roll-to-roll material 950 to be transported is transported in a flat state without being uneven.

The material exposure unit 7000 is installed next to the first roller tension unit 6000 and at the front end of the second roller tension unit 6500 and is installed at a central position of the transfer table 2000.

The material exposure unit 7000 stops the transfer of the roll-to-roll material 950 according to a corresponding control signal and mechanically compresses the roll-to-roll material 950 by a vertically pushing method, while air suction is applied to the master film for pattern formation by air suction. Close contact and driving the exposure lamp to form a pattern on the surface of the roll-to-roll material 950.

At this time, the surface of the roll-to-roll material 950 will be described and understood as having a photosensitive film already attached, and the same applies hereinafter.

The material exposure section 7000 includes an exposure lamp 7100, a material pressing seating film 7200, a guide piston pin seating groove 7300, a seating film suction groove 7400, and a material exposure guide piston pin 7500 and seating film pressing. It includes a packing rubber 7600 and a master glass master film 7700.

The exposure lamp 7100 emits ultraviolet (UV) light by a corresponding control signal from the roll-to-roll exposure control unit 8000, and the LEDs (LEDs) that generate ultraviolet light with an output of 1 watt (W) or higher are 0.5 to 0.5 horizontally and vertically. It is a configuration that is arranged at intervals of 1 centimeter. The use of LEDs has the advantage of reducing power consumption.

The exposure lamp 7100 is composed of an upper exposure lamp 7102 and a lower exposure lamp 7104. When manufacturing a flexible circuit board (FPCB) of a double-sided pattern, each is activated and used for exposure, and a flexible circuit of a single-sided pattern When manufacturing a substrate (FPCB), any one of them is exposed in an activated state, and if necessary, when manufacturing a flexible circuit board (FPCB) having a cross-section pattern, the upper exposure lamp 7102 and the lower exposure lamp 7104 are activated respectively. Can be exposed.

The upper exposure lamp 7102 and the lower exposure lamp 7104 are structures that are spaced apart from each other by a driving unit not illustrated in the drawing by corresponding control signals of the roll-to-roll exposure control unit 8000, and such a structure is Since it may be general, further detailed description is omitted.

The material pressing and seating film 7200 is a transparent film, and the upper exposure lamp 7102 is fixedly installed in a fluid state on the lower side of the upper exposure lamp 7102 adjacent to the upper side of the roll-to-roll material 950 and roll-to-roll material (950) can be fixed by pressing on the upper side.

The guide piston pin seating groove 7300 is installed to be formed along the rim of the upper exposure lamp 7102, and the material exposure guide piston pin 7500 is inserted so that it does not move.

The seating film suction groove 7400 is a groove installed and connected to be formed along the rim of the lower exposure lamp 7104, and strongly absorbs adjacent objects by an external suction. The seating film suction groove 7400 allows the roll-to-roll material 950 positioned between the material pressurized seating film 7200 to be strongly adhered to the upper side of the lower exposure lamp 7104.

The material exposure guide piston pin 7500 is formed along the rim of the lower exposure lamp 7104 and is disposed outside the position of the seating film suction groove 7400 and in the vertical direction by the corresponding control signal of the roll-to-roll exposure control unit 8000. It is a pin configuration connected to a moving piston rod.

The plurality of pins constituting the material exposure guide piston pin 7500 are arranged to be respectively inserted into the piston pin guide hole 970.

When the pin of the material exposure guide piston pin 7500 is inserted into the piston pin guide hole 970, the roll-to-roll exposure control unit 8000 outputs a corresponding control signal to control the upper exposure lamp 7102 to move slightly upward. So it is easy to insert.

In addition, when the roll-to-roll material 950 is transferred to the position of the material exposure part 7000 to expose the pattern, the roller press air cylinders 6030 on both sides of the width direction constituting the first roller tension part 6000 are made. 2 When the roller press air cylinders 6030 on both sides of the width direction constituting the roller tension part 6500 are moved upward, respectively, the upper press roller 6010 and the second roller constituting the first roller tension part 6000 The upper pressing roller 6010 constituting the tension part 6500 is moved upward.

At this time, the lower rotating roller (6020) constituting the first roller tension unit (6000) and the lower rotating roller (6020) constituting the second roller tension unit (6500) are released from the pressed state, and the surface made of the rubber material is slightly It moves upward.

That is, the first roller tension that was pressed while the upper pressing roller 6010 constituting the first roller tension unit 6000 and the upper pressing roller 6010 constituting the second roller tension unit 6500 were moved upward, respectively. The lower rotating roller 6020 of the portion 6000 and the lower rotating roller 6020 of the second roller tensioning portion 6500 are restored. At this time, since the roll-to-roll material 950 sandwiched (interposed) between the upper pressing roller 6010 and the lower rotating roller 6020 is slightly lifted upward, the corresponding pin of the material exposure guide piston pin 7500 While easily finding the piston pin guide hole 970 of the roll-to-roll material 950, insertion is made quickly and accurately.

The first roller tension unit 6000 and the second roller tension unit 6500 roll the corresponding pins of the material exposure guide piston pin 7500 in the range of 0.1 to 0.5 seconds according to the control signals of the roll-to-roll exposure control unit 8000. It is controlled and monitored to be accurately inserted into the piston pin guide hole 970 of the two-roll material 950, and is provided in each of the first roller tensioning unit 6000 and the second roller tensioning unit 6500 to be inserted in 0.2 second time. It is preferable to control the roller press air cylinder 6030,

On the other hand, the roll-to-roll exposure control unit 8000 determines that the corresponding pin of the material exposure guide piston pin 7500 is correctly inserted into the piston pin guide hole 970 of the roll-to-roll material 950 or when the set time has elapsed, The first roller tension unit 6000 and the second roller tension are output by outputting a corresponding control signal to the corresponding roller press air cylinder 6030 provided in the first roller tension unit 6000 and the second roller tension unit 6500, respectively. The upper press rollers 6010 respectively provided in the parts 6500 are moved downward.

The seating film pressing packing rubber 7600 is formed along the rim of the lower exposure lamp 7104 and is formed in a space between the seating film suction groove 7400 and the material exposure guide piston pin 7500.

The seating film pressing packing rubber 7600 blocks the suction force absorbed by the seating film suction groove 7400 from being discharged to the outside while the roll-to-roll material 950 and the material pressing seating film 7200 are in close contact.

The master glass master film 7700 is disposed close to the upper surface of the lower exposure lamp 7104 and functions as a master film having a master pattern formed by a circuit pattern identical to the circuit pattern to be formed in the roll-to-roll material 950 and made of glass. .

If the circuit pattern to be formed on the roll-to-roll material 950 is changed, it is installed and configured to replace the original glass master film 7700.

If necessary, the disc glass master film 7700 may be further installed in addition to the lower surface of the upper exposure lamp 7102.

When the roll-to-roll material 950 flows in by the corresponding control signal of the roll-to-roll exposure control unit 8000, the material exposure guide piston 7000 is inserted into the piston pin guide hole 970 to roll-to-roll. The material 950 is fixed so as not to move, and the seating film suction groove 7400 strongly sucks the material pressing seating film 7200 while being in contact with the upper exposure lamp 7102 and the lower exposure lamp 7104. 950) and the master glass master film 7700 are closely adhered to each other without any gap. At this time, when the exposure lamp 7100 is activated, a very fine circuit pattern to be formed is formed very accurately without error in the roll-to-roll material 950. .

In the material exposure guide piston pin 7500, the roll-to-roll material 950 introduced for pattern exposure to the material exposure unit 7000 flows in the required length by the roll-to-roll exposure control unit 8000 and precisely reaches the corresponding position. If it is determined, the plurality of pins provided by the corresponding control signal of the roll-to-roll exposure control unit 8000 is moved upward by the corresponding piston driving, and maintained in an upwardly moved state until the exposure process is completed. On the other hand, if it is determined that the exposure process is finished by the roll-to-roll exposure control unit 8000, the roll-to-roll exposure control unit 8000 controls the material exposure guide piston pin 7500 to drive the corresponding pin to return to the downward position.

The exposure lamp 7100 may be installed to irradiate exposure to either one of the upper and lower surfaces of the roll-to-roll material 950, or may be installed to irradiate simultaneous exposure to both surfaces.

The material exposure unit 7000 is introduced, and both side portions of the roll-to-roll material 950 while the infrared exposure is performed by the material exposure guide piston pin 7500, which prevents the roll-to-roll material 950 to be patterned from moving. It is inserted into a plurality of formed piston pin guide hole 970, the material exposure guide piston pin 7500 is driven by the corresponding control signal of the roll-to-roll exposure control unit 8000.

The material exposure unit 7000 forms a detailed and precise circuit pattern to be printed on the roll-to-roll material 950 on the original glass master film 7700, and when the roll-to-roll material 950 flows in, it is in close contact with the pattern, but roll-to-roll The seating film suction groove 7400 is driven by the corresponding control signal of the exposure control unit 8000 to bring the roll-to-roll material 950 and the master glass master film 7700 into close contact without a gap.

The roll-to-roll exposure control unit 8000 is installed on a lower portion of the transfer table 2000 and connects to each functional unit constituting the system, and outputs a corresponding control signal by driving an operation program and monitors the operation status.

The roll-to-roll exposure control unit 8000 may be driven independently by an operating program or may be driven by a corresponding control command signal input from the outside.

On the other hand, the roll-to-roll exposure control unit 8000 transfers the roll-to-roll material 950 passing through the first roller tension unit 6000, the transfer speed of the roll-to-roll material 950 passing through the second roller tension unit 6500. It is monitored and controlled to be slower than the speed. The adjustment of the feed speed is made by adjusting the pressing force pressed by the first roller tension unit 6000 and the second roller tension unit 6500. The function of the roll-to-roll exposure control unit 8000 may be described again in detail in the method description.

The darkroom cabinet part (9000) is a structure that encloses the entire high-speed punching machine interlocking roll-to-roll exposure system (900) inside and seals it to block the inflow of light from the outside and filters the outside air to force it into the inside. It is well illustrated in detail in the accompanying FIG. 8. On the other hand, a darkroom lamp for work is provided inside the darkroom cabinet part 9000, and a fan for blowing air therein and a hepa filter for blocking fine foreign matters from the outside are provided on the outside. do. The hepa filter that blocks the inflow of the fan, the fine material, and the foreign matter is well known, and thus a detailed description thereof will be omitted.

9 is a flow chart illustrating a method for manufacturing a high-speed punching machine interlocking-type precision roll-to-roll material flexible circuit board according to an embodiment of the present invention, and FIG. 10 is a high-speed punching machine interlocking-type precision roll-to-roll according to an embodiment of the present invention It is a state diagram produced by the method for manufacturing a material flexible circuit board, and FIG. 11 is a physical photograph prepared by the method for manufacturing a flexible roll-to-roll material flexible circuit board interlocking with a high-speed puncher according to an embodiment of the present invention.

Referring to all the attached drawings, a method for manufacturing a flexible rolled-roller interlocking precision roll-to-roll material flexible circuit board will be described in detail. The first high-speed punching step, the second high-speed punching step, the pattern etching step, the third high-speed punching step, and the release paper punching It includes a step and a marking and printing step. In each step, the roll-to-roll material to be processed is unwinded, and the roll-to-roll material in which the corresponding processing of each step is completed is wound (rewind).

The first high-speed punching step is a transparent, adhesive force of 200 grams per square centimeter, consisting of a roll to roll remover film of 0.05 t thickness and a plain blue tape, and a roll to roll remover film of 0.05 t thickness. The roll-to-roll material thus formed is formed by punching out standardized guide holes at equal intervals at both edges in the width direction of the roll-to-roll material while the primary shape of the designed product is removed by high-speed punching. Here, the guide holes formed at uniform intervals are 6 millimeters (mm), and the allowable error range is within 0.05 millimeters. The finer the spacing of the guide hole, the finer and more precise the pattern that is exposed and exposed at high speed.
Here, the value indicating the size of the adhesive force and the value indicating the thickness are generally used in the field, and it is clear that the gram value in square centimeters is commonly used, and various other units are more used, and the same applies hereinafter. The gram values in square centimeters are mainly explained.

In the second high-speed punching step, a polyimide (PI) film having a thickness of 0.025 t is rolled into a roll-to-roll material produced in the first high-speed punching step, and the adhesive strength is laminated with a hot melted adhesive having a tensile strength of 3500 grams per square centimeter. Remove the terminal-shaped part of the machine by high-speed punching.

In the pattern etching step, the both surfaces of the roll-to-roll material and copper produced in the second high-speed punching step are nickel-plated, respectively, to heat-bond a metal layer having a total thickness of 0.018 t, heat-bond the exposure film again, and expose fine and precise patterns. After developing and etching, peeling off unnecessary parts, washing and drying, and visual inspection of the designed pattern, mark and mark the defective parts before winding.

Here, the etching is designed in such a way that the etchant is sprayed with a spray and the sprayed etchant is evaporated and dried to remove unnecessary parts and is designed and forms the necessary pattern.

The third high-speed punching step is a roll-to-roll material produced in the pattern etching process, the thickness of which is 0.05 t, and the adhesive roll-to-roll material having an adhesive force of 3500 grams per square centimeter is laminated at high speed, and parts except for the pattern are removed by high-speed punching.

The release paper punching step is a high-speed punching for laminating release papers of 0.075 t in thickness to easily separate the pattern formed on the roll-to-roll material produced in the third high-speed punching step, and for removing the remaining unnecessary parts.

The marking printing step digitally prints the roll-to-roll material produced in the release paper step with oil-based ink, and the printed contents are the model name that distinguishes the pattern, the lot number indicating the production time, and the design change. Printable version numbers, etc., are printed.

10 is a diagram illustrating the state in which the antenna pattern is formed after the high-speed punched roll-to-roll material 950 is subjected to etching and other processes after the exposure process. A plurality of holes are continuously formed at uniform intervals on both sides of the edge of the roll-to-roll material 950, and the pins are inserted into these holes to transport at a constant speed, and the pattern printed by exposure is very fine and precise However, it is possible to confirm the state in which each is well distinguished and clearly formed.

The above configuration lowers the production cost and does not cause the separation of patterns on the curved surface of the material, while accurately transporting the roll-to-roll material and accurately exposing the pattern to the roll-to-roll material, and it is easy to form a fine pattern. While the pattern is very easy to deform, there is an advantage that the pattern does not break even when an impact due to dropping is applied.

In addition, by using an etching method such as a flexible printed circuit board, manufacturing cost is greatly reduced, and mass production of precisely processed patterns is very easy, and it includes both advantages of easy production of fine patterns such as an LMA printed circuit board. .

In the above, the present invention has been described in detail with respect to the described specific examples, but it is apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and it is natural that such modifications and modifications belong to the appended claims.

Claims (8)

In the roll-to-roll material flexible circuit board manufacturing method,
The first to uniformly form standardized guide holes on both edges in the width direction of the roll-to-roll material, which is removed by high-speed punching of the primary shape of the product after laminating the transparent roll-to-removal film and the blue roll-to-removal film. High-speed punching step;
A second high-speed punching step of laminating a polyimide film with a hot-melt adhesive on the roll-to-roll material produced in the first high-speed punching step and removing the terminal shape of the pattern by high-speed punching;
Thermally laminating the roll-to-roll material and metal layer produced in the second high-speed punching step, again laminating the exposure film, exposing and developing fine and precise patterns, etching, peeling off unnecessary parts, washing and drying, and defective parts during pattern inspection Marking and winding the pattern etching step; High-speed punching machine interlocking precision roll-to-roll material flexible circuit board manufacturing method comprising a.
According to claim 1,
A third high-speed punching step of laminating the adhesive roll-to-roll material to the roll-to-roll material produced in the pattern etching process at a high speed and removing the part excluding the pattern by high-speed punching;
A release paper punching step of laminating release paper separating the pattern formed on the roll-to-roll material produced in the third high-speed punching step and high-speed punching to remove the remaining parts;
A marking printing step of printing with the oil-based ink on the roll-to-roll material produced in the release step; High-speed punching machine interlocking precision roll-to-roll material flexible circuit board manufacturing method further comprising a.
delete delete The method of claim 1 or 2,
The metal layer is a nickel plated on both sides of copper, and the overall thickness is 0.018 t, characterized in that the high-speed punching machine interlocking precision roll-to-roll material flexible circuit board manufacturing method.
The method of claim 1 or 2,
The etching is a high-speed punching machine interlocking precision roll-to-roll material flexible circuit board manufacturing method characterized in that the configuration is made by spraying an etching solution.
delete According to claim 2,
The release paper is a high-speed punching machine interlocking precision roll-to-roll material flexible circuit board manufacturing method characterized in that it consists of a thickness of 0.075 t.

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