JPH06263330A - Supply reel for conductive film tape - Google Patents

Abstract

PURPOSE:To provide a supply reel with which the whole length of a conductive film tape wound around it can be set long, and of which winding diameter can be set small. CONSTITUTION:A supply reel 25 used for an application device to apply a conductive film 1 to an electrode 23 of a display panel 22 for attaching a driver to the display panel 22 is provided with a partition part 53 between a side plate 51 and a side plate 52 installed at both side parts of a shaft part 54 of it, and winding spaces T1-T4 for a conductive film tape adjacent to each other parted by the partiton part 53 are communicated with each other, where the partition part 53 is provided with an aperture part for inserting the conductive film tape from one winding space T1-T4 to the adjacent winding space T1-T4. Since a winding diameter of the conductive film tape can thus be set small, the conductive film is prevented from being crushed, and because the whole length of the conductive tape can be set long, a supply frequency of it can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive film tape supply reel used in a sticking device for sticking a conductive film for adhering a driver lead to an electrode of a display panel. Is.

[0002]

2. Description of the Related Art As a driver for a display panel such as a liquid crystal panel, a TAB (Tape Automated B) is used.
The electronic components manufactured by the onding method are widely used. As a method of connecting the driver and the electrode of the display panel, a method of adhering the driver to the electrode of the display panel with an anisotropic conductive film is known. FIG. 6 is a cross-sectional view of the conductive film tape. In the conductive film tape 4, the upper interlayer tape 2 and the lower interlayer tape 3 are attached to the upper and lower surfaces of the conductive film 1 3
It is a layered structure. The conductive film 1 is formed of an epoxy-based synthetic resin mixed with conductive particles or the like, and has adhesiveness so that it can be attached to a display panel.

FIG. 7 is a front view showing an outline of a sticking device for a conductive film. The conductive film tape 4 is wound around the supply reel 7a, and the suction head 15 is drawn by a drawing means (not shown).
However, the lower interlayer tape 3 is peeled off from the conductive film 1 and wound onto the take-up reel 7b when the guide rollers 12 and 13 are circulated in the middle thereof.
The conductive film 1 and the upper interlayer tape 2 pulled out below the suction head 15 are cut into a predetermined length by a cutter 11 and picked up by the suction head 15. Next, the conductive film 1 and the display panel 2 which are vacuum-adsorbed on the lower surface of the adsorption head 15.
The conductive film 1 is attached to the electrodes of the display panel 22 by lowering the suction head 15 after aligning the two electrodes.

As described above, the conductive film tape 4 is wound around the supply reel 7a. If the number of windings (winding diameter) is increased (increased), the shaft portion (center portion) of the supply reel 7a.
A strong winding pressure is applied to the conductive film tape 4 wound near the conductive film 1, and the conductive film 1 is easily crushed. FIG. 8 shows A- of FIG.
A cross section A shows that the conductive film 1 is crushed by the strong winding pressure and protrudes to both sides of the upper interlayer tape 2, and both sides of the conductive film 1 adhere to the lower surface of the suction head 15. ing.

Thus, the conductive film 1 is crushed and the suction head 1 is crushed.
When it adheres to the lower surface of 5, the transfer of the conductive film 1 to the electrode 23 of the display panel 22 is likely to be disordered. In a later step, the upper interlayer tape 2 is peeled from the conductive film 1 to expose the conductive film 1 and then the driver is bonded to the conductive film 1. However, when the conductive film 1 is crushed in this way, The tape 2 is buried inside the conductive film 1 and becomes difficult to be easily peeled off from the conductive film 1.

For the above reasons, conventionally, the number of windings (winding diameter) of the conductive film tape 4 wound around the shaft portion of the supply reel 7a is reduced (decreased) so that the conductive film tape near the shaft portion can be reduced. No large winding pressure was applied to 4 to prevent the conductive film 1 from being crushed.

[0007]

As described above, since the number of windings of the conductive film tape 4 wound around the supply reel 7a has been conventionally reduced, the conductive film tape 4 wound around the supply reel 7a is wound. The total length was also that short, for example, about 25 m.

However, since the length of the conductive film tape 4 wound around the supply reel 7a is short, the conductive film tape 4 wound around the supply reel 7a is very short (about 20 minutes at present). Therefore, the operator has to replenish the conductive film tape 4 frequently, which requires a great deal of time and labor for operation management of the sticking device.

Therefore, the present invention provides a supply reel of a conductive film tape in which the conductive film is not crushed by the winding pressure and the length of the conductive film tape to be wound can be dramatically lengthened. The purpose is to

[0010]

To this end, the present invention provides a partition part for dividing a space between the side plates mounted on both sides of the shaft part of the supply reel into a plurality of winding spaces. The partition is provided with an opening for connecting adjacent winding spaces of the partitioned conductive film tape and inserting the conductive film tape from one winding space to the adjacent winding space. .

[0011]

According to the above construction, the conductive film tape can be wound by being connected to a plurality of winding spaces, so that the total length of the conductive film tape wound on the supply reel can be made extremely long.

[0012]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a perspective view of a sticking device for a conductive film.
Reference numeral 21 denotes a pedestal on which a display panel 22 is placed. An electrode 23 to which the conductive film 1 is attached is formed on a side end portion of the display panel 22.

A standing wall 24 is provided behind the pedestal portion 21, and the following parts are assembled on the front surface thereof. 25 is a supply reel, which is the above-mentioned conductive film 1,
A conductive film tape 4 having a three-layer structure including an upper interlayer tape 2 and a lower interlayer tape 3 is wound. The conductive film tape 4 is led out along the guide roller 12. A take-up reel 26 is provided below the supply reel 25, and takes up the lower interlayer tape 3 separated from the conductive film 1. 27 is a motor for driving the take-up reel 26 provided on the back surface of the standing wall 24.

A bracket 31 is mounted on the right side of the standing wall 24, and a cylinder 32 is mounted on the bracket 31. The suction head 15 is coupled to the rod 33 of the cylinder 32. When the rod 33 projects, the suction head 15 moves down, and when the rod 33 retracts, the suction head 15 moves up. Reference numeral 34 denotes a tube connected to the suction head 15, which is connected to a suction device (not shown), and the inside of the suction head 15 is vacuum-sucked by the tube 34, so that the lower surface of the suction head 15 is covered with the upper interlayer. The tape 2 is vacuum-adsorbed.

A bracket 35 is arranged above the horizontal lead-out path of the conductive film tape 4 downstream of the guide roller 12, and the cylinder 10 of the pressing means 8 is mounted on the bracket 35. A fixed block 41 is provided below the lead-out path of the conductive film tape 4, and a holding block 9 connected to the rod 14 of the cylinder 10 is located above the fixed block 41. The fixed block 41 has a substantially box shape, and a guide roller 42 is provided in a notch on the lower right side thereof.
Is pivoted. As shown in the figure, the conductive film tape 4 is led out along the upper surface of the fixed block 41 while keeping the three-layer structure, and only the lower interlayer tape 3 is separated from the conductive film 1 along the right shoulder of the fixed block 41. After that, it is taken around the lower part of the fixed block 41 and wound around the take-up reel 26. That is, the fixed block 41 is formed of the conductive film tape 4
And the peeling means for peeling the lower interlayer tape 3 from the conductive film 1.

Next, the detailed structure of the supply reel 25 will be described with reference to FIGS. 2, 3, and 4. 2 and 3
In this supply reel 25, the disc-shaped left and right side plates 5 are provided.
1, 52 and a disk-shaped partition portion 53 arranged between the side plates 51 and 52. In this embodiment, the number of partition portions 53 is three, and the left and right side plates 51, 52 and the three partition portions 53 form four partition plates 53 for winding the conductive film tape 4 between the side plates 51 and 52. Winding space T1, T2, T
3, T4 is secured. Further, one side plate 52 and the three partition portions 53 have the same shape, and a shaft portion 54 is integrally projectingly provided in the central portion thereof, and the shaft portion 54 is wound around the winding spaces T1 to T4. It is a spacer to secure

As shown in FIG. 3, the supply reel 25 is assembled by sandwiching three partition portions 53 between the side plates 51 and 52 and inserting a screw 55 into the shaft portion 54. Of course, they may be assembled by bonding with an adhesive. As shown in FIG. 2, the partition portion 53 is formed with an opening portion 56 deeply recessed from the outer periphery thereof to the shaft portion 54. This opening 56 is
Adjacent winding spaces T1 and T2, T2 and T3, and T3 and T4 are made to communicate with each other, and the conductive film tape 4 is wound from the first winding space T1 to the second winding space as shown in FIGS. Space T2
From the second winding space T2 to the third winding space T3
And from the third winding space T3 to the fourth winding space T4 continuously.

As shown in the figure, the conductive film tape 4 wound around the shaft portion 54 has a shaft portion 5 in the winding space adjacent to the outermost peripheral portion.
4 and is wound around this shaft portion 54. By doing so, the total length of the conductive film tape 4 can be reduced by continuously winding the plurality of winding spaces T1 to T4 while reducing the number of windings in one winding space, as shown in FIG. It can be four times as large as the supply reel 7a. That is, the number of windings (winding diameter) of the conductive film tape 4 in one winding is reduced (decreased), and the conductive film 1 is wound by the winding pressure.
It is possible to remarkably increase the total length of the conductive film tape 4 while avoiding being crushed.

Next, the operation of the conductive film sticking apparatus will be described with reference to FIGS. 5 (a), 5 (b) and 5 (c).

As shown in FIG. 5A, the tips of the conductive film 1 and the upper interlayer tape 2 are clamped by the clamper 6 of the drawing means 5. Next, as shown in FIG. 5B, the drawing means 5 moves to the right and draws the conductive film 1 and the upper interlayer tape 2 below the suction head 15. At this time, the drive motor 27 is driven to rotate the take-up reel 26 and take up the lower interlayer tape 3 separated from the conductive film 1. FIG. 1 shows the state at this time.

Next, the rod 33 of the cylinder 32 projects,
The suction head 15 descends and vacuum-sucks the upper interlayer tape 2 on its lower surface. Next, as shown in FIG. 5 (c), the rod 14 of the cylinder 10 projects and the pressing block 9 descends.
After pressing the conductive film tape 4 on the upper surface of the fixed block 41, the cutter 11 moves up and down to cut the conductive film 1 and the upper interlayer tape 2 into a predetermined length. Next, withdrawal means 5
After the clamper 6 is released from the clamped state, the suction head 15 picks up the conductive film 1 and the upper interlayer tape 2 which are vacuum-sucked on the lower surface thereof, and aligns the conductive film 1 and the electrode 23 of the display panel. Then, the conductive film 1 is attached onto a predetermined electrode 23 of the display panel 22.

In the above operation, when the conductive block 4 is pressed on the upper surface of the fixed block 41 by the pressing block 9, the lower interlayer tape 3 exists between the conductive film 1 and the fixed block 41, so that the pressing block 9 is pressed. The conductive film 1 is not stuck to the fixed block 41 even if the conductive film 1 is pressed by, so that the conductive film 1 and the upper interlayer tape 2 can be smoothly drawn by the drawing means 5.

In the above operation, if the conductive film tape 4 wound on the supply reel 25 is consumed and is out of stock, the supply reel 25 is replaced and the conductive film tape 4 is replenished. In the winding space T1
Since the conductive film 4 is wound around T4 for a long time, it is less likely that the product will be out of stock, and the operator's operational management burden is significantly reduced.

Incidentally, the conductive film 1 and the electrode 2 of the display panel 22.
3, the suction head 15 and the display panel 22 are moved relative to each other in the horizontal and rotational directions, the pull-out means 5 is moved horizontally below the suction head 15, and the clamper 6 is used. Description of publicly known means such as driving means for performing the opening / closing operation is omitted because the drawing becomes complicated.

The present invention is not limited to the above embodiment, and for example, the shape of the partitioning portion can secure a plurality of winding spaces T1 to T4 between the side plates 51 and 52, and one winding space can be secured. It suffices that the conductive film tape 4 can be inserted through the winding space adjacent to the partition part 53 and the shaft part 5.
Of course, 4 may be formed separately, and the specific shape is not limited to the above embodiment.

[0027]

As described above, according to the supply reel of the conductive film tape of the present invention, the conductive film tape can be wound in a plurality of winding spaces, so that the total length thereof is wider than that of the conventional supply reel. Since the length of the conductive film can be increased and the number of windings (winding diameter) of the conductive film tape in one winding space can be reduced (reduced), the conductive film is not crushed by the winding pressure, and therefore the conductive film is not crushed. The frequency of running out of tape will be drastically reduced, and the operator's operational management burden will be significantly reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a conductive film attaching apparatus according to an embodiment of the present invention.

FIG. 2 is an exploded view of a supply reel of a conductive film tape according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a supply reel of a conductive film tape according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view of a supply reel of a conductive film tape according to an embodiment of the present invention.

FIG. 5 (a) is a front view of a main portion of a supply reel according to one embodiment of the present invention while a conductive film is being attached. FIG. Front view (c) A front view of a main portion of the supply reel according to one embodiment of the present invention during sticking of a conductive film

FIG. 6 is a sectional view of a conductive film tape according to an embodiment of the present invention.

FIG. 7 is a schematic front view of a conventional conductive film sticking device.

FIG. 8 is a cross-sectional view of a suction head and a display panel during sticking of a conductive film by a conventional conductive film sticking device.

[Explanation of symbols]

 1 Conductive Film 2 Upper Interlayer Tape 3 Lower Interlayer Tape 4 Conductive Film Tape 25 Supply Reels 51, 52 Side Plates 53 Partition 54 Shaft 56 Opening T1, T2, T3, T4 Winding Space

Claims (1)

[Claims] 1. A supply reel of a conductive film tape, comprising a conductive film tape formed by adhering an upper interlayer tape and a lower interlayer tape on an upper surface and a lower surface of a conductive film, the reel comprising a shaft portion and a shaft portion. It has side plates attached to both side parts and a partition part that divides the space between the side plate and the side plate into a plurality of winding spaces, and the adjacent winding spaces of the conductive film tape that are partitioned by the partition parts. A supply reel for a conductive film tape, characterized in that an opening is provided in the partition for communicating the conductive film tape from one winding space to the adjacent winding space.