KR100633159B1 - Anisotropic Conductive Film Feeding Device - Google Patents

Abstract

The present invention relates to an ACF supply apparatus for use in adhering a driver IC or a TAB package to a flat panel display (FPD) substrate such as an LCD and a PDP, comprising: a supply unit supplying an ACF tape including an ACF layer and an ACF support layer; And a recovery part for extracting the ACF tape to bond the ACF layer to a work object and a recovery part for recovering the ACF support layer from which the ACF layer is separated. According to the present invention, a plurality of reel holders for rotatably supporting a plurality of ACF reels for winding the ACF tape in the same plane, and an ACF tape withdrawn from an ACF reel mounted on one of the plurality of reel holders. It characterized in that it comprises a holding means for fixing the withdrawal end of the position at a predetermined supply waiting place. As a result, even when the device is in operation, the consumed ACF reel can be replaced, thereby minimizing the operation stop of the device due to the replacement of the ACF reel.

LCD, PDP, Substrate, ACF (Anisotropic Conductive Film), TAB Package, Adhesion

Description

AFC Feeder {Anisotropic Conductive Film Feeding Device}

1 is a partially enlarged view showing a state in which a TAB package is bonded to a substrate;

2 is a plan view showing a substrate coated with ACF,

3 is a front view showing a conventional ACF supply device,

4A and 4B are a front view and a plan view showing a supply part of another conventional ACF supply device;

5 is a front view showing an embodiment of the ACF supply apparatus according to the present invention,

6 is a partially enlarged view illustrating a supply unit of FIG. 5;

7 is a partially enlarged view illustrating a recovery part of FIG. 5.

<Explanation of symbols for the main parts of the drawings>

10: substrate 11: gate pad

12: Data Pad 13: ACF

20: TAB Package 21: Drive Chip

22: input lead 23: output lead

110,210,310: Supply part 111,211,311: ACF reel

112,312: reel mount 113,313: ACF tape

113a, 313a: ACF support layer 114,314: roller

120,320: bonding unit 121,321: stage

122,322: Press 130,330: Recovery part

131: recovery reel 132: reel holder

133: roller 140,340: carrier

215: mounting member 216: rotating member

217: tension lever 315: gripping portion

316: transfer guide 317: idle roller

318,333: Guide 331: Contact roller

332: idle roller 334: guide roller

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus applied to the manufacturing process of a flat panel display, and more particularly, to an anisotropic conductive film (ACF) supply apparatus used to bond a driver IC or a TAB package to a substrate.

The manufacturing process of a flat panel display (FPD), such as an LCD and a PDP, includes the process of joining a driver IC or a flexible printed circuit (FPC) by apply | coating ACF to the side part on a board | substrate. For example, as illustrated in FIG. 1, gate pads 11 and data pads 12 extending from the plurality of thin film transistors are formed at adjacent both sides of the LCD substrate 10 having the plurality of thin film transistors formed therein. Is located. The driver IC is connected to the gate pad 11 and the data pad 12 to apply a signal to the thin film transistor. The driver IC is directly bonded to the substrate 10 (Chip On Glass method), or attached to a polyimide film formed with a metal wire to adhere the film (this is called a TAB package) to the substrate 10 (Tape It is electrically connected to the pad (11, 12) by the Automated Bonding method).

This adhesion and electrical connection is made by a conductive film such as ACF. Anisotropic Conductive Film (ACF) is a conductive particle dispersed in an adhesive resin, and interposed between predetermined electrodes, when pressure is applied from the outside, the insulating film on the surface of the conductive particle is destroyed and the conductive particles are in contact with the electrode. The liver is electrically shorted.

In order to bond the driver IC or the TAB package onto the substrate 10, the ACF layer 13 must first be adhered to the corresponding position of the substrate 10 as shown in FIG. 2. The ACF layer is attached to the ACF support layer on one surface so as not to be entangled with each other, and is kept in a state of being wound on a reel in the form of a tape having a predetermined width.

As shown in FIG. 3, a conventional ACF supply device includes a supply unit 110 having a reel mount 112 on which an ACF reel 111 is mounted, and an ACF tape 113 supplied from the supply unit 110. ACF tape from the bonding part 120 which pressurizes an ACF layer to the board | substrate 10, the recovery part 130 which collect | recovers the ACF support layer 113a from which the ACF layer was isolate | separated from the bonding part 120, and the supply part 110. Consists of a carrier 140 to take out 113 and transport it to the bonding unit 120.

The ACF tape 113 is drawn out from the ACF reel 111 of the supply unit 110 manually or automatically and passes through the plurality of rollers 114 through the bonding unit 120 to pass through the plurality of rollers 133 of the recovery unit 130. It is attached to the recovery reel 131 and is ready to supply. Thereafter, the ACF tape 113 is supplied from the supply unit 110 to the bonding unit 120 by the carrier 140.

In the bonding part 120, when the substrate 10 is supplied from the outside and supported by the stage 121, the press 122 provided at the upper side is moved down by the cylinder driving, and is already supplied by the carrier 140. The ACF tape 113 is pressed to bond the ACF layer to the substrate 10. The substrate 10 to which the ACF layer is bonded is transferred to another place to perform a bonding process such as a TAB package or a driver IC. The carrier 140 moves to the place where the ACF tape 113 on the left side is supplied after the ACF layer is bonded to the substrate 10 and grips the ACF tape 113, and then moves to the right side again to recover the unit 130. Wait at the entrance. While the carrier 140 draws out the ACF tape 113, the reel holders 112 and 132, which wind the ACF reel 111 and the recovery reel 131, are rotated by the driving motor to draw out the ACF tape 113, respectively. And the ACF support layer 113a is smoothly recovered.

According to the structure of the ACF supply device, since the ACF tape 113 wound on the ACF reel 111 has a finite length, after all of the ACF tape 113 wound on one ACF reel 111 is used, Interrupt the ACF adhesion process for a while and work to replace the ACF reel (111) with a new reel. Therefore, there was a problem that the production efficiency is reduced as the entire LCD production line is stopped due to the replacement operation.

In order to solve this problem, Korean Laid-Open Patent Publication No. 2004-5654 discloses an ACF supply device having a reel set unit 210 having a rotating structure as shown in FIGS. 4A and 4B. Referring to FIG. 4B, the reel set part 210 has a structure in which a pair of left and right mounting members 215 are attached to the rotating member 216, and thus the position of the mounting member 215 is rotated by the rotating member 216. Are mutually invertible. Therefore, when the ACF reel 211 mounted on the mounting member 215 on one side is used for the bonding operation and the ACF tape is exhausted, the rotating member 216 is immediately rotated 180 degrees to be mounted on the mounting member 215 on the other side. The use of new ACF reels (not shown) significantly reduces downtime. In addition, since the use of the ACF reel 211 is completed, the new ACF reel can be replaced at any time by the operator during the process, there is an advantage to facilitate the operator.

However, in the case of the present invention, the rotation member 216 may cause a rotational error in the amount of rotation, the mounting member 215 in the process of replacing the ACF reel in the rear of the supply unit 210 during the operation of the equipment There was a problem that an equipment error may occur due to shaking. In addition, although the tension lever 217 having a constant inertia is used to maintain the tension on the ACF tape to be drawn out, it is difficult to set the tension in such a manner, and it is difficult to set a constant tension and respond to a sudden change in the drawing speed of the ACF tape. There was a problem of this lack.

Accordingly, an object of the present invention is to provide an ACF supply device that can replace the ACF reel irrespective of the operating situation, and minimizes the operation stop due to the periodic replacement operation of the ACF reel.                         

In addition, another object of the present invention is to provide an ACF supply device that can prevent the occurrence of instability of the device due to the replacement operation of the ACF reel and can always maintain a constant setting state.

In order to achieve the above object, the present invention provides a supply unit for supplying an ACF tape consisting of an ACF layer and an ACF support layer, and a bonding unit and the ACF layer for extracting the ACF tape from the supply unit to bond the ACF layer to a work object. An ACF supply apparatus comprising a recovery section for recovering the separated ACF support layer, wherein the supply section includes: a plurality of reel holders rotatably supporting a plurality of ACF reels for winding an ACF tape in the same plane; It provides an ACF supply apparatus comprising a gripping means for fixing the lead end portion of the ACF tape drawn out from the ACF reel mounted on one of the reel holders at a predetermined supply standby position.

Here, the plurality of reel holders may be arranged up and down on a vertical surface.

In addition, the holding means may be provided fixed to the supply standby, and may include a control unit for controlling the driving unit and the driving unit for driving the holding unit and the holding of the holding unit. Alternatively, the gripping means may include a transfer guide leading to the supply standby place, a gripping portion transferred on the transfer guide, a driving unit for driving the gripping portion and the gripping portion, and a control unit for controlling the driving unit.

In addition, the recovery unit may include a pair of contact rollers which rotate and engage with each other to pull the ACF support layer transferred from the bonding unit, a driving unit for driving the pair of contact rollers, and a control unit for controlling the driving unit. .

The apparatus may further include tension maintaining means for applying a predetermined amount of tension to the ACF tape drawn out from the ACF reel and the ACF support layer recovered to the recovery unit. Here, the tension holding means may include a plurality of idle rollers for pressing the ACF tape and the ACF support layer, respectively, with a constant force, the plurality of idle rollers respectively down the ACF tape and the ACF support layer by its own weight You can also press

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

An embodiment of the ACF supply apparatus according to the present invention, as shown in Figure 5, the supply unit 310 is provided with two reel mounts (312, 312 ') are mounted so that the two ACF reels (311, 311') are positioned up and down The ACF tape 313 supplied from the supply part 310 is pressed to bond the ACF layer to the substrate 10, and the ACF support layer 313a having the ACF layer separated from the bonding part 320. It consists of a carrier 340 which draws out the ACF tape 313 from the recovery unit 330 and the supply unit 310 to be recovered to the bonding unit 320.

As shown in FIGS. 5 and 6, the supply unit 310 includes two reel mounts 312 and 312 'disposed vertically and vertically, and ACF reels 311 and 311' are mounted on the reel mounts 312 and 312 ', respectively. The left side further includes a gripping portion 315 for fixing an end of the ACF tape 313 or 313 'and a guide 316 for supporting the gripping portion 315 vertically. The ACF tape 313 drawn out from the lower ACF reel 311 is supplied to the bonding part 320 via the plurality of rollers 314 and used in the ACF bonding process. The ACF tape 313 withdrawn from the ACF reel 311 passes through the bonding portion 320 and engages with the contact roller 331 of the recovery portion 330, thereby completing the supply preparation state. Thereafter, the ACF tape 313 is drawn out by the carrier 340 and supplied to the bonding unit 320 as described below.

The withdrawal end of the ACF tape 313 'drawn out from the upper ACF reel 311' is gripped by the holding portion 315 via a plurality of rollers 314 'and is in a standby state. When the ACF tape 313 of the lower ACF reel 311 is exhausted, the holding part 315 automatically descends to the supply standby place S along the transfer guide 316 to the ACF tape 313 on the carrier 340. ') Will be supplied. Accordingly, the operator can replace the lower ACF reel 311 while the ACF tape 313 ′ is drawn out from the upper ACF reel 311 ′ and supplied to the bonding part 320. While the upper ACF tape 313 ′ is supplied, the ACF reel 311 is mounted on the lower reel mount 312, and the lead end of the ACF tape 313 is raised and returned to the waiting gripper 315. It is fixed.

On the other hand, the holding portion 315 may be fixed to the supply standby (S) instead of the transfer as described above. In this case, the carrier 340 moves to the supply standby point S when the ACF tape 313 or 313 'is exhausted, and withdraws the lead end of the ACF tape 313 or 313' from the gripper.

When the substrate 10 is supplied from the outside and aligned on the stage 321, the bonding unit 320 moves down the pre-supplied ACF tape 313 while the press 322 provided on the upper side moves downward by cylinder driving. Pressing on the substrate 10 while pressing to cause the ACF layer to adhere to the substrate 10. When the press 322 is raised after the ACF layer is bonded, the carrier 340 positioned on the right side of the bonding part 320 moves in the direction of the supply part 310, and thus, the ACF tape 313 adhered to the substrate 10. Separate the ACF support layer from the ACF layer. The substrate 10 to which the ACF layer is bonded is transferred to another place, whereby a TAB package or a driver IC is attached.

Meanwhile, the carrier 340 draws out the ACF tape 313 from the supply part 310 to the recovery part 330, and the contact rollers of the ACF reel 311 and the recovery part 330 while the carrier 340 is drawn out. 331 are rotated to allow the ACF tape 313 to be drawn out and the ACF support layer 313a is smoothly recovered.

5 and 7, the recovery unit 330 is composed of a pair of interlocking contact rollers 331, each roller is rotated by a drive motor (not shown).

Meanwhile, the supply part 310 and the recovery part 330 are provided with idle rollers 317 and 332 as a means for applying a constant tension to the ACF tape 313 to be conveyed. The idle roller 317 of the supply part 310 vertically slides up and down on the guide 318 fixed to one side of the reel holder 312, and the roller 317 to the ACF tape 313 drawn out from the ACF reel 311. Apply a constant vertical load equal to the self-weight of). The idle roller 332 of the recovery part 330 slides on the guide 333 provided vertically in front of the contact roller 331, and the roller 332 is attached to the ACF support layer 313a recovered by the contact roller 331. Apply a constant vertical load equal to the weight of. Guide rollers 334 are provided on both left and right sides of the idle roller 332. As a result, in the bonding unit 320, the bonding operation is performed in a state in which a constant tension is applied to both ends of the ACF tape 313 by vertical loads of the idle rollers 317 and 332, respectively. In addition, as the amount of rotation of the reel mounts 312 and the contact rollers 331 at both ends of the ACF tape 313 positioned at the bonding unit 320 changes, the tension force applied to the ACF tape 313 changes with each idle roller. As the absorbed by the vertical movement of the (317,332) (317, 332), the tension change does not reach the ACF tape 313 bonded by the bonding portion 320.

When the ACF tape 313 or 313 'drawn out from one of the two ACF reels 311 and 311' is exhausted, a cutter (not shown) provided on the ACF tape path of the bonding unit 320 operates to operate the ACF tape. To cut. Then, the remaining ACF tape on the right side of the cutout is recovered by driving the contact roller 331 of the recovery part 330, and the remaining ACF tape on the left side of the cutout is driven by the reverse rotation drive of the corresponding reel mount 312 or 312 '. Rewound by When the exhaustion of the exhausted ACF tape is completed as described above, the carrier 340 moves to the supply standby site S on the left side, grips the end portion of the new ACF tape 313 'or 313, and then moves to the right side again to bond to the bonding unit. The stop 320 and the recovery part 330 are stopped. At this time, the idle roller 332 located on the movement path of the carrier 340 is in a raised state, the contact rollers 331 are respectively fixed in a state of opening up and down. In addition, the reel mount 312 'or 312 rotates in the withdrawal direction of the ACF tape 313' or 313 during the transfer of the carrier 340 to maintain a constant tension on the ACF tape 313 'or 313. When the carrier 340 is stopped, the idle roller 332 and the contact roller 331 return to their original positions, thereby completing the preparation for bonding. Meanwhile, the ACF reel 311 or 311 'exhausting the ACF tape 313 or 313' is removed by the operator regardless of the operation state of the equipment while the other ACF reel 311 'or 311 is used. Can be replaced with an ACF reel.

As described above, according to the ACF supply apparatus according to the present invention, it is possible to replace the exhausted ACF reel irrespective of the operating situation of the device, the effect of minimizing the operation stop due to the periodic replacement operation of the ACF reel There is.

In addition, according to the ACF supply apparatus according to the present invention, since a plurality of reel mounting stage is provided on the same plane, it is possible to minimize the occurrence of vibration during replacement of the ACF reel to prevent the occurrence of instability of the device, and always constant ACF The effect is that the supply can be maintained.

In addition, according to the ACF supply apparatus according to the present invention, since the structure of the recovery portion is simple, there is an effect that the failure factor of the recovery portion is greatly reduced.

Claims (8)

A supply unit for supplying an ACF tape comprising an ACF layer and an ACF support layer, a bonding unit for drawing out the ACF tape from the supply unit and bonding the ACF layer to a work object, and a recovery unit for recovering the ACF support layer from which the ACF layer is separated In the ACF supply device comprising: The supply unit includes a plurality of reel holders for rotatably supporting a plurality of ACF reels for winding the ACF tape in the same plane, and a lead end portion of the ACF tape drawn out from the ACF reel mounted on one of the plurality of reel holders. ACF supply apparatus comprising a holding means for fixing to a predetermined supply standby position. The method of claim 1, And the plurality of reel holders are disposed up and down on a vertical surface. The method of claim 1, The gripping means is fixed to the supply standby place, and provided with a holding part for driving the gripping portion and the gripping portion and the control unit for controlling the drive unit. The method of claim 1, The gripping means includes a transfer guide leading to the supply standby place, a gripping portion transferred on the transfer guide, a driving unit for driving the gripping portion and the gripping portion, and a control unit for controlling the driving unit. Feeder. The method of claim 1, The recovery unit includes a pair of contact rollers which rotate and mesh with each other to pull the ACF support layer transferred from the bonding unit, a drive unit for driving the pair of contact rollers, and a control unit for controlling the drive unit. ACF supply. The method of claim 1, And a tension holding means for applying a tension of a predetermined size to the ACF tape drawn out from the ACF reel and the ACF support layer recovered to the recovery part. The method of claim 6, And said tension retaining means comprises a plurality of idle rollers each pressing said ACF tape and said ACF support layer with a constant force. The method of claim 7, wherein And the plurality of idle rollers each press the ACF tape and the ACF support layer vertically downward by their own weight.

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