JP2011014790A - Acf sticking device and sticking method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reliable ACF sticking device and sticking method for stably peeling a separator without flotation of an ACF.SOLUTION: The ACF sticking device or method that sticks the ACF to the mounting position of a display substrate where a mounted component is mounted and peels the separator for separating and protecting the ACF from the ACF is characterized in including a first roller for pressing the separator against the display substrate during the peeling and a second roller holding the separator together with the first roller with the separator interposed therebetween. A peeling roller group standing by on the recovery side of the separator with respect to the mounting position during sticking of the ACF is moved from the recovery side to the supply side of the ACF, and the second roller is moved in a non-contact manner with the ACF.

Description

  The present invention relates to an ACF sticking apparatus and a sticking method, and in particular, an ACF sticking apparatus and a sticking method for stably sticking an ACF (Anisotropic Conductive Film) to a transparent display substrate constituting a liquid crystal panel. It is about.

  The manufacturing process of a liquid crystal display device includes a process of mounting a tape carrier package (TCP) in which a driver IC is mounted on a display substrate (hereinafter simply referred to as a substrate) constituting a liquid crystal panel using a TAB (Tape Automated Bonding) mounting machine. . Prior to this mounting process, the ACF is attached to the mounting position. ACF is made by dispersing conductive particles in a binder resin made of an adhesive electrical insulating material. On the substrate, TAB is bonded after the ACF is pasted, and pressure bonding is performed while heating. Thus, the TAB side electrode and the substrate side electrode are electrically connected through the conductive particles.

  The ACF is wound around the ACF reel by a predetermined length in a state of an ACF tape laminated on a separator for protecting the ACF. In order to attach the ACF to the substrate, the ACF tape is fed out from the reel, and only the ACF portion is cut for each predetermined length, so-called half cut is performed, and the substrate is temporarily pressed and attached to the substrate, and then the separator Is peeled off from the ACF. If this peeling fails, the ACF that has been temporarily pressure-bonded will float or peel off. The problem is how to remove only the separator without causing the ACF to float or peel off.

As conventional techniques of this peeling method, there are JP-A-10-260422 and JP-A-2000-340616.
Patent Document 1 discloses a method in which an ACF tape is attached by a pressure-bonding head, the pressure-bonding head is separated, a tape peeling pin is moved between the pressure-bonding head and the substrate, and the separator is peeled off. Patent Document 2 discloses a method of attaching an ACF tape and peeling a separator by moving an attaching roller and a peeling / guide roller integrally.

JP-A-10-260422 JP 2000-340616 A

  However, the method disclosed in Patent Document 1 may cause the ACF to float or peel because it is forcibly peeled off by a tape peeling pin. On the other hand, in the method disclosed in Patent Document 2, when the ACF is attached to the substrate, the peeling guide roller travels on the surface where the ACF is attached to the substrate, so that dust or the like may adhere to the surface. Yes, it is necessary to select a roller material that reduces the adhesion rate. Further, in the method disclosed in Patent Document 2, when the separator is peeled off, the attaching roller simply serves to press the separator against the peeling / guide roller, and the peeling / guide roller serves as a tape peeling pin of Patent Document 1. It is in the same state and has the same problem as the method disclosed in Patent Document 1.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a highly reliable ACF sticking device and a sticking method that can stably peel off the separator without floating the ACF. is there.

  In order to achieve the above object, the present invention provides a peeling means for peeling the separator of an ACF tape comprising an ACF for attaching a mounting component to a mounting position of a display substrate and a separator for laminating and protecting the ACF from the ACF. In the ACF adhering apparatus, the peeling means includes a first roller that holds the side opposite to the peeling surface of the separator against the display substrate during the peeling, and a second roller that holds the separator between the first roller and the second roller. A separation roller group including a roller, and a moving unit that moves the separation roller group between the separator collection side and the ACF supply side, and the separation roller group is attached to the separator while the ACF is being applied. The first feature is that the first roller moves while pressing the separator or the ACF tape during the peeling. .

  In addition to the first feature, the second feature of the present invention is to move the second roller to the ACF in a non-contact manner during the movement, in addition to the first feature.

  Furthermore, the present invention provides an ACF attaching method for peeling off the separator of an ACF tape comprising an ACF for attaching a mounting component to a mounting position of a display substrate and a separator for laminating and protecting the ACF. An affixing step of adhering an ACF tape having the separator to a mounting position; a first roller that presses the side opposite to the separation surface of the separator against the display substrate during the separation; and the separator between the first roller A separation step of separating the separator from the ACF by moving a separation roller group comprising a second roller held by the separator from the separator collection side to the ACF supply side with respect to the mounting position. The peeling roller group waits on the collecting side during the attaching step, and the first roller is during the peeling, To move serial separator or pressing the ACF tape and third features.

  According to the present invention, it is possible to provide a highly reliable ACF sticking device and a sticking method that do not float ACF and can peel the separator stably.

It is the schematic of the ACF sticking apparatus and board | substrate conveyance apparatus of a present Example. It is a schematic diagram for demonstrating ACF sticking operation | movement and a structure, and is a side view of an ACF sticking apparatus. It is a schematic diagram for demonstrating ACF sticking operation | movement and a structure, and is a front view of an ACF sticking apparatus. It is the figure which showed the ACF sticking operation flow It is a one part block diagram of the ACF sticking part and sticking head part, and main-body part which were shown in FIG. It is a figure which shows the state which raised the crimping blade to the standby position after heating and pressurizing an ACF tape. FIG. 5 is a diagram illustrating a state in which the peeling roller and the pressing parallel guide roller are integrally moved by the peeling roller driving unit illustrated in FIG. 4 in the right direction (ACF supply direction). It is a figure which shows a state when a peeling roller is moved to the right end of an ACF sticking part, and the peeling process demonstrated in FIG. 5B is completed. It is a figure which shows the state which raised the base shown in FIG. 2 and completed the peeling roller etc. from the board | substrate after the peeling process completion. The ACF sticking apparatus is moved to the next TAB mounting portion by the X-direction moving portion shown in FIG. 1 and the ACF tape is moved by a predetermined amount. It is a figure which shows the 2nd Example of a peeling roller and a pressing parallel guide roller. It is a figure which shows the 3rd Example of a peeling roller. It is the figure which showed the principal part external appearance of the liquid crystal panel. It is the figure which showed the cross-section figure of the ACF tape. It is a figure which shows the cross section of a TAB mounting position.

  An embodiment of the present invention will be described below with reference to the drawings. FIG. 8 shows the appearance of the main part of the liquid crystal panel, FIG. 9 shows a cross-sectional structure diagram of the ACF tape, and FIG. 10 shows a cross-section at the TAB mounting position.

  In FIG. 8, two transparent substrates such as glass are stacked on each other, and a cell gap is formed between them, and liquid crystal is sealed in the cell gap. The two transparent substrates 2 and 3 constituting the substrate 1 are referred to as a lower substrate 2 and an upper substrate 3, respectively. A predetermined lead pattern is formed on the surface of the lower substrate 2 facing the upper substrate 3 by printing means or the like, and this lead pattern is grouped into a predetermined number of groups to form a lead group 4. The lower substrate 2 is formed with a plurality of lead groups 4 on at least one side. A TAB 9 in which an integrated circuit element 6 is mounted on a flexible substrate 5 and a predetermined number of lead groups 7 and 8 are provided on both sides of the integrated circuit element 6, respectively, and the lead group 7 constitutes a lead group 4 of the lower substrate 2. It is mounted so as to be surely electrically connected to each lead.

  The ACF 10 shown in FIG. 9 is used to mount the TAB 9 on the lower substrate 2 in a state where the lead group 7 is electrically connected to the lead group 4. ACF 10 is laminated on separator 11 to form ACF tape 12. The separator 11 has a release layer on the layered surface with the ACF 10. Therefore, after the ACF tape 12 is attached to the lower substrate 2, the separator 11 can be peeled off from the ACF 10 by this peeling layer.

  The ACF 10 is composed of a conductive resin 10b in which the conductive particles 10b are uniformly dispersed in an electrically insulating and adhesive binder resin 10a. The conductive particles 10b are the leads in the lead group 7 and the lead group 4. It consists of particles that are much smaller than the spacing. Therefore, when a predetermined pressing force is applied between the lower substrate 2 and the TAB 9 in a state in which the binder resin 10a is heated and softened, the particle size of the conductive particles 10b substantially coincides with that shown in FIG. Thus, the conductive particles 10b come into contact with the leads 4a and 7a constituting the lead groups 4 and 7 and are electrically connected therebetween. When the binder resin is cured, TAB 9 is fixed to the lower substrate 2.

FIG. 1 shows a schematic diagram of an ACF sticking device 20 and a substrate transport device 30 of the present embodiment.
The substrate transfer device 30 includes a substrate holder 31 that can move in the Y direction, the Z direction, and the θ direction, and a substrate transfer unit 32 that moves the substrate holder in the X direction. The substrate 1 is transported from the preceding cleaning processing apparatus (not shown) to the ACF pasting apparatus 20 by this transporting apparatus 30, the ACF is pasted, and after the pasting process is finished, a TAB mounting processing apparatus for mounting the next TAB ( (Not shown).

  On the other hand, the ACF sticking device 20 is movable in the X direction and the Y direction by a movable table 21 movable in the Y direction and an X direction moving unit 22 that moves the movable table in the X direction. These moving mechanisms align the substrate 1 and the ACF sticking device 20 in the X and Y directions.

The ACF sticking device 20 is roughly composed of a main body part 40, a sticking head part 50, an ACF reel 60, and an ACF sticking part 100.
FIG. 2 is a schematic diagram for explaining the ACF sticking operation and configuration, FIG. 2A is a side view of the ACF sticking apparatus, and FIG. 2B is a front view of the ACF sticking apparatus. FIG. 3 is a view showing a part of the ACF reel 60, the ACF attaching portion 100, and the attaching head portion 50, and FIG. 3 is a view showing an ACF attaching operation flow.

  The ACF tape 12 wound around the ACF reel 60 is sent to a predetermined position below the crimping blade 51 from the plurality of guide rollers 112, 123, 122 (Step 1). Then, a so-called half cut is performed in which the ACF of the ACF tape 12 is cut by the half cut unit 104 (Step 2). After half-cutting, the base 101 on which the components of the ACF attaching part 100 are installed and the crimping blade 51 are lowered to the lower blade 52, and the ACF tape is heated and pressure-bonded for a required time by the crimping blade 51 heated by the heater block 53. (Step 3). Thereafter, the crimping blade 51 is raised to cool the ACF (Step 4). The separator 11 is peeled from the ACF 10 fixed to the substrate by a peeling process described later (Step 5). It is determined whether the processing is completed at all TAB mounting positions (Step 6). If not completed, the ACF sticking device 20 is moved to the next TAB mounting position by the X-direction moving unit 22 shown in FIG. 1 (Step 7), and the process goes to Step 1. In Step 1, as described above, when the ACF tape 12 is moved by a predetermined amount to attach the ACF to the next TAB mounting position, as shown in FIG. Of these, only the separator 11 is used. Therefore, the separator 11 is moved by a predetermined amount and collected by the suction block 105. Thereafter, Step 1 to Step 7 are repeated until all the processes are completed.

FIG. 4 is a configuration diagram of a part of the ACF pasting unit 100 and the pasting head unit 50 and the main body unit 40 shown in FIG.
The affixing head unit 50 fixes the cylinder body 54, the pusher rod 55 that extends from the cylinder body and applies a pressure load to the crimping blade 51, and the cylinder body, in addition to the crimping blade 51 and the lower blade 52 having the heater block described above. And a cylinder fixing plate 56. The posture of the crimping blade 51 is moved up and down by an arm 41 connected from the main body 40 to the cylinder fixing plate 56, and the arm 41 is controlled by a posture control unit (not shown) provided inside the main body 40.

  The ACF adhering unit 100 includes an arm 126 to which the base 101 shown in FIG. 2 is fixed on the right side of the adhering head unit 50, a parallel guide roller 122 that is fixed to the arm, and that keeps the ACF substantially parallel to the substrate. There is an auxiliary guide roller 123. Further, on the left side of the sticking head unit 50, there are a peeling roller 120, a pressing parallel guide roller 121 and a parallel auxiliary guide 124 which serve to keep the ACF parallel. Both the feed rollers 114 and 115 shown in FIG. 2 serve as feed rollers for discarding the separator to the suction block 105.

  On the left side, there is a peeling roller driving unit 130 for peeling the separator 11 (constituting members are indicated by a number 130 in the drawing). The peeling roller driving unit 130 has a peeling roller moving plate 131 that travels on the rail 135 and moves the peeling roller 120 and the pressing parallel guide roller 121 integrally to the left and right, and an L-shaped two-side link. A link arm 133 having a rotatable fulcrum 132 fixed to the base 101 at the intersection of the sides, a cylinder 134 for driving the link arm 133, and the like. One end of the link arm 133 is rotatably connected to the pusher rod 136 of the cylinder 134, and the other end is connected to an elongated groove 138 on which a fixing pin 137 fixed to the peeling roller moving plate 131 can slide.

In such a configuration, the pusher rod 136 is expanded and contracted, and the link arm is rotated with the fulcrum 132 as a fulcrum, whereby the fixing pin 137 slides in the elongated groove 138. Therefore, the peeling roller moving plate 131 moves in the X direction, and the peeling roller 120 and the pressing parallel guide roller 121 move together in the X direction. As a result, the separation roller moving plate 131 was moved from the separator collection side (left) shown in FIG. 2 to the supply side (right) of the ACF tape 12, and was sandwiched between the separation roller 120 and the pressing parallel guide roller 121. The separator 11 shown in FIG. 9 can be peeled from the ACF 10.
Reference numeral 140 denotes a cylinder that raises and lowers the base 101. When descending, the ACF tape 12 between the parallel guide roller 122 and the pressing parallel guide roller 121 is placed on the substrate 1 while being kept substantially parallel to the substrate 1, and when separated, the separated separator is separated from the substrate. The base 101 is moved as follows.

Finally, the separation process of the separator 11 in Step 5 shown in FIG. 3 based on the above-described mechanism will be described in detail with reference to FIG.
FIG. 5A shows a state in which, after the ACF tape 12 is heated and pressed, the crimping blade 51 is raised to the standby position. Only the separator 11 exists in the left region from the left end C of the crimping blade 51, and the ACF tape 12 having the ACF 10 and the separator 11 exists in the right region from the left end.

  FIG. 5B shows a state in which the peeling roller 120 and the pressing parallel guide roller 121 are moved together in the right direction (ACF supply direction) by the peeling roller driving unit 130 shown in FIG. At this time, as shown in the drawing, the separator 11 is sandwiched between the peeling roller 120 and the pressing parallel guide roller 121. The peeling roller 120 is in contact with the peeling surface side 11 a of the separator 11 from the ACF, and moves away from the ACF 10 while being separated from the substrate 1. On the other hand, the pressing parallel guide roller 121 moves while pressing the side surface 11 b opposite to the peeling surface side 11 a of the separator 11. In this manner, the peeling roller 120 moves in a non-contact manner so that dust or the like does not adhere to the ACF. On the other hand, the pressing parallel guide roller 121 moves while pressing the side surface 11b opposite to the peeling surface side that does not affect the performance of the ACF. At this time, it is desirable that the pressing parallel guide roller 121 is also pressing the ACF, that is, the entire ACF tape, but it may be slightly lifted from the ACF. In the case of floating, the separator is pressed to the substrate side.

  As a result, the separator 11 is gradually peeled off from the ACF below the pressing parallel guide roller 121, so that no forcible force is exerted, and the separator 11 is not dependent on the thickness of the separator or the adhesive force of the ACF. And the separator can be peeled off.

  FIG. 5C shows a state when the peeling roller 120 and the pressing parallel guide roller 121 are moved to the right end of the ACF sticking portion and the peeling process described in FIG. 5B is completed. FIG. 5D shows a state where the base 101 shown in FIG. 2 is raised after the peeling process is completed, and the peeling roller 120 and the like are separated from the substrate 1. FIG. 5E is a diagram showing processing for the next mounting position of Step 1 shown in FIG. 3, and the ACF sticking device 20 is moved to the next TAB mounting position by the X-direction moving unit 22 shown in FIG. Shows a state in which is moved by a predetermined amount.

As described above, according to the present embodiment, it is possible to provide an ACF sticking apparatus and a sticking method capable of stably peeling a separator without exerting a forcible force and without depending on the thickness of the separator and the adhesive strength of the ACF.
Further, according to the present embodiment, the contact surface of the peeling roller with the separator does not come into contact with the ACF, so there is no need to consider it as the material.

In the above embodiment, the peeling roller 120 is provided beside the pressing parallel guide roller 121. However, as shown in FIG. 6, the separator 11 is held in a Z shape by being provided on the upper side, thereby further stabilizing the peeling surface. Can be applied.
Further, although the cylindrical roller is used in the embodiment shown in FIG. 5, an H-type roller as shown in FIG. 7 may be used. The H-shaped roller is in contact with the substrate but is not in contact with the ACF because it is straddling the ACF. The same effect as the first embodiment can be obtained.

1: Display substrate (substrate) 9: TAB 10: ACF
DESCRIPTION OF SYMBOLS 11: Separator 12: ACF tape 20: ACF sticking apparatus 30: Board | substrate conveyance apparatus 50: Sticking head part 51: Crimping blade 52: Lower blade 60: ACF reel 100: ACF sticking part 104: Half cut unit 120: Peeling roller 121: Pressing parallel guide roller 130: peeling roller driving unit.

Claims (8)

In the ACF sticking device having a peeling means for peeling the separator of the ACF tape comprising the ACF for sticking the mounting component to the mounting position of the display substrate and the separator for laminating and protecting the ACF,
The peeling means comprises a first roller that holds the side opposite to the peeling surface side of the separator against the display substrate during the peeling, and a second roller that holds the separator between the first roller and the second roller. And a moving means for moving the peeling roller group between the separator collection side and the ACF supply side, the peeling roller group waiting on the separator collection side while the ACF is being applied, The ACF adhering apparatus, wherein the first roller moves while pressing the separator or the ACF tape during the peeling.   2. The ACF sticking apparatus according to claim 1, wherein the second roller is moved in a non-contact manner to the ACF during the movement.   The ACF sticking device according to claim 1, wherein the second roller is disposed beside the first roller.   The ACF sticking apparatus according to claim 1, wherein the second roller is disposed above the first roller. The ACF sticking apparatus according to claim 2, wherein the second roller has a cylindrical shape and is provided apart from the mounting position.   The ACF sticking apparatus according to claim 2, wherein the second roller has an H-shaped cross-sectional shape so as to straddle the ACF and is in contact with the display substrate. The moving means is provided with the peeling roller group, a peeling roller moving plate having a first fixed pin or a first elongated groove, a link arm for moving the peeling roller moving plate, and one end of the link arm. And a drive section for moving the link arm, and a second elongated groove for sliding the first fixing pin or the first elongated groove is slid on the other end side of the link arm. The ACF attaching device according to claim 1, further comprising a second fixing pin that moves. In the ACF sticking method of peeling off the separator of the ACF tape comprising the ACF for sticking the mounting component to the mounting position of the display substrate and the separator for laminating and protecting the ACF,
An affixing step of adhering an ACF tape having the ACF and the separator to a mounting position; a first roller that presses a side opposite to the separation surface of the separator toward the display substrate during the separation; A peeling step for peeling the separator from the ACF by moving a peeling roller group having a second roller sandwiched between the rollers from the separator collection side to the ACF supply side with respect to the mounting position; The peeling roller group waits on the collecting side during the sticking step, and the first roller moves while pressing the separator or the ACF tape during the peeling.

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