JPH06163643A - Conductive film sticking device - Google Patents

Abstract

PURPOSE:To stick a conductive film for bonding a driver to an electrode of a display panel such as a liquid crystal panel, etc., efficiently. CONSTITUTION:A conductive film sticking device is composed of a drawing-out means 71, which draws out a conductive film 7 along the bottom of a suction head 54 for sucking a conductive film 7, a cutting means, which cuts this conductive film 7 provided on the lead path of the conductive film 7, and a vertically shifting means 52, which makes the suction head 54 perform the vertical movement to a display panel 10. Hereby, a plurality of conductive films 7 can be stuck at the same time to the display panel 10, so the work efficiency is improved remarkably, and besides the length of the conductive film 7 can be changed freely, according to the kinds of display panels 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive film sticking device for sticking a conductive film for sticking a driver lead to a display panel such as a liquid crystal panel to an electrode of the display panel.

[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. Also, as a method of connecting the driver and the display panel,
A method of using an anisotropic conductive film is known. Figure 10
Shows a cross section in which a driver manufactured by the TAB method is connected to a display panel. This display panel 10 is formed by stacking a lower panel 1 and an upper panel 2,
Electrodes 3 are provided on the side edges of the lower panel 1. The driver 4 is formed by bonding the chip 6 to the leads 9 of the sheet 5 obtained by punching the film carrier, and the leads 9 attached to the sheet 5 via the anisotropic conductive film 7. Is bonded to the electrode 3.

Next, a conventional sticking device for sticking the conductive film 7 on the electrode 3 will be described with reference to FIG.
The tape-shaped conductive film 7 and the inter-layer tape 8 are provided on the supply reel 11.
And a take-up reel 12 for the interlayer tape 8 is provided below the supply reel 11. When the motor 13 drives to rotate the belt 14, the supply reel 11 rotates, the conductive film 7 and the interlayer tape 8 are fed, and the interlayer tape 8 is wound on the take-up reel 12. Reference numeral 15 is a guide roller for guiding the transfer of the conductive film 7 and the interlayer tape 8.

A cutting unit 16 is provided in front of the supply reel 11 and the take-up reel 12. The cutting unit 16 includes a guide block 17, a slider 21 that slides along the guide block 17, a first chuck claw 18 that is held by the slider 21 and chucks the tip of the conductive film 7, and a conductive film. A second chuck claw 19 for chucking the base end side of 7 and a scissor type cutter 20 for cutting the conductive film 7 are provided. When the motor 22 is driven, the slider 21 slides along the guide block 17, and when the cylinder 23 is driven, the cutter 20 opens and closes to cut the conductive film 7.

A sticking head 24 is composed of a main body block 25, a horizontally long adsorbent 26 provided below the main body block 25, and an actuator 27 for moving the adsorbent 26 up and down. ing. The head 24 is held on a moving table (not shown), and is moved in the X and Y directions by driving the moving table. The conductive film sticking apparatus is configured as described above, and the operation will be described next.

The conductive film 7 fed from the supply reel 11 is horizontally held between the first chuck claw 18 and the second chuck claw 19. Therefore, the head 2 is provided directly above the conductive film 7.
4 arrives and the actuator 27 is driven, the adsorbent 26 descends and adsorbs the conductive film 7 on its lower surface. Next, the cylinder 23 is driven, the conductive film 7 is cut by the cutter 20, and the chuck state by the first chuck claw 18 is released.

Next, when the actuator 27 is driven in the reverse direction, the adsorbent 26 rises and picks up the conductive film 7. Next, the head 24 moves above the electrode 3 of the lower panel 1 by driving the moving table (not shown). Next, the actuator 27 operates and the adsorbent 26 descends, whereby the conductive film 7 adsorbed on the lower surface thereof is adhered to the lower panel 1, the adsorbed state is released, and then the adsorbent 26 rises. By repeating such an operation, the conductive films 7 are successively attached on the electrodes 3 of the lower panel 1, and then the leads 9 of the driver 4 are bonded onto the conductive films 7 as shown in FIG. To be done.

[0008]

The array of the electrodes 3 varies depending on the type of the display panel 10, and the length of the conductive film 7 cut by the cutter 20 also varies accordingly. Therefore, in the above-described conventional sticking apparatus, the adsorbents 26 having different horizontal dimensions are different depending on the type of the display panel 10.
It is necessary to prepare the heads 24 equipped with each time, so that the number of the heads 24 increases and the cost increases.
In addition, maintenance of the head 24 is troublesome. Further, in the above-described conventional sticking apparatus, the cutting operation of the conductive film 7, the operation of adsorbing the cut conductive film 7 by the head 24, the operation of moving the head 24 to the upper side of the display panel 10, and the operation of moving the head 24 there. Since the conductive films 7 must be attached to the display panel 10 one by one by repeating many operations such as vertically moving and attaching the conductive film 7 to the display panel 10, there is a problem in that work efficiency does not increase. There was a point.

Therefore, it is an object of the present invention to provide a conductive film sticking device which can easily stick conductive films of various lengths to electrodes of a display panel.

[0010]

To this end, the present invention provides a base for mounting a display panel, a supply reel on which a tape-shaped conductive film is wound, and a display panel mounted on the base. An adsorption head that is disposed above the adsorption reel and adsorbs the conductive film led out from the supply reel on the lower surface, and a moving unit that relatively moves the display panel on the platform and the adsorption head in the horizontal direction. Drawing means for drawing out the conductive film along the lower surface of the suction head, cutting means for cutting the conductive film provided in the drawing path of the conductive film, and performing vertical movement of the head with respect to the panel. The up-and-down moving means constitutes a sticking device for the conductive film.

[0011]

According to the above structure, the conductive film is pulled out by a predetermined length along the lower surface of the suction head, cut by the cutting means, and sucked on the lower surface of the suction head. By repeating this operation a plurality of times, a plurality of sheets are formed. Adhere the conductive film to the bottom surface of the adsorption head,
A plurality of conductive films can be attached to the display panel at the same time.

[0012]

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

FIG. 1 is an overall perspective view of a conductive film sticking device. An X table 32 and a Y table 33 which are orthogonal to each other are arranged on the main body box 31, and the X table 3
A turntable 34 is arranged on the upper part 2. The turntable 34 has a base 35 on which the display panel 10 is placed.
Is provided. When the motor 36 provided on the X table 32 is driven, the display panel 10 moves horizontally in the X direction, and when the motor 37 provided on the Y table 33 is driven, the display panel 10 moves in the Y direction, and the suction head 54, which will be described later, is moved. Align with. Also turntable 34
The display panel 10 is horizontally rotated by 90 ° in order to attach the conductive film 7 to the orthogonal side of the display panel 10.

A standing wall 40 is provided above the main body box 31. Reference numeral 44 is a support arm for the standing wall 40. A supply reel 41 and a take-up reel 42 are pivotally supported on the front left side of the standing wall 40. The tape-shaped conductive film 7 is wound around the supply reel 41, and the take-up reel 42 winds up the interlayer paper 8 wound together with the conductive film 7. 43
Is a motor for driving the take-up reel 42,
It is provided on the back of.

A suction head 54 is provided below the front surface of the standing wall 40. Next, the arrangement structure of the suction head 54 and the like will be described with reference to the front view of FIG. 2 and the bottom view of FIG.
In FIG. 2, a cylinder 52 is placed on a shelf 51 that is provided so as to project from the front surface of the standing wall 40. The rod 53 of the cylinder 52 penetrates the shelf 51 (see also FIGS. 3 and 4), and the suction head 54 is coupled to the lower end thereof. The suction head 54 has a horizontally long box shape, and a large number of suction holes 56 for vacuum-sucking the conductive film 7 are formed in the suction head 54 at a pitch.

In FIG. 4, the suction head 54 is covered with a cover 55. In FIG. 5A, the cover 5
A cylinder 61 is placed on the upper portion of the cylinder 5, and the suction head 54 is connected to the rod 62 of the cylinder 61.
Normally, as shown in FIG. 5A, the rod 62 of the cylinder 61 is retracted, and in this state, the lower end portion 55 a of the cover 55 projects slightly below the lower surface of the suction head 54. The conductive film 7 is vacuum-sucked on the lower surface of the suction head 54, and the conductive film 7 slides along the lower surface of the suction head 54 at the lower end portion 55 a of the cover 55 that projects downward from the lower surface of the suction head 54. It is a guide part that guides you. FIG. 5B shows a state in which the conductive film 7 is attached to the electrodes 9 on the side edges of the display panel 10. At this time, the rod 62 of the cylinder 61 projects, the lower end portion 55 a of the cover 55 is drawn upward from the lower surface of the suction head 54, and the conductive film 7 is moved by the suction head 54 to the electrode 3.
And press to paste (see also chain line in Figure 4).

Next, the mechanism for pulling out the conductive film 7 will be described.
In FIG. 2, the conductive film 7 wound around the supply reel 41
Is guided to a position near the left end of the suction head 54 along the guide roller 63. A block 64 is provided between the guide roller 63 and the suction head 54 as a posture maintaining means for the tip of the conductive film 7. As shown in FIG. 6, a suction hole 65 is formed in the block 64, and the conductive film 7 is vacuum-sucked to hold the leading end of the conductive film 7 in a horizontal posture. As shown in FIG. 7, guide portions 66 for guiding the conductive film 7 are provided on both sides of the lower surface of the block 64 in a protruding manner. Reference numeral 8a denotes a protective film attached to the upper surface of the conductive film 7, which is peeled and removed after the conductive film 7 is attached to the display panel 1 and before the driver is bonded onto the conductive film 7.

In FIG. 6, cutters 67 and 68 are provided between the block 64 and the suction head 54 so as to sandwich the conductive film 7 from above and below. The cutters 67 and 68 are held by the cutter driving unit 70, and the cutter driving unit 70
Is driven, the cutters 67 and 68 move up and down,
The conductive film 7 is cut into a predetermined length. Reference numeral 71 is a chuck unit for chucking the tip of the conductive film 7. The chuck unit 71 includes an upper bracket 72 and a lower bracket 73. A solenoid 74 is attached to the upper bracket 72, and a lower bracket 73 is connected to a rod 75 of the solenoid 74. A fixed claw 76 is attached to the upper bracket 72, and a lower bracket 73 is attached.
A movable claw 77 is attached to the. When the rod 75 is retracted, the movable claw 77 rises and holds the tip of the conductive film 7 between the fixed claw 76 and the movable claw 77, and when the rod 75 projects and the movable claw 77 descends, the held state is released. .

The chuck unit 71 is the suction head 5
The moving mechanism will be described below. FIG. 3 is a bottom view of the main part, and a frame 81 is attached to the back surface of the standing wall 40.
A motor 82 is mounted on the. A ball screw 83 is coupled to the motor 82. The ball screw 83 is arranged parallel to the suction head 54 along the back surface of the standing wall 40, and its tip end is held by a bearing 84. A nut 85 is screwed onto the ball screw 83, and the chuck unit 71 is held by the nut 85. In FIG. 4 and FIG. 8, 86 is the standing wall 40.
A guide rail 87 is provided on the back surface of the nut 85, and a slider 87 is provided on the front surface of the nut 85 and fitted into the guide rail 86. Therefore, when the motor 82 is driven and the ball screw 83 rotates forward, the chuck unit 71 slides to the left in FIG. 2, and when the motor 82 drives in the reverse direction and the ball screw 83 rotates backward, the chuck unit 7 is rotated.
1 slides to the right.

This electroconductive film sticking apparatus has the above-mentioned structure, and the overall operation will be described below. In FIG.
The display panel 10 is placed on the table portion 35, and the X table 3
2, by driving the Y table 33 and the turntable 34, the electrode 3 of the display panel 10 is positioned immediately below the suction head 54. Next, as shown in FIG. 6, the chuck unit 71 is brought close to the tip of the conductive film 7 whose tip is vacuum-sucked to the lower surface of the block 64 and held in a horizontal posture, and the rod 75 of the solenoid 74 is pulled. By loading, the tip of the conductive film 7 is held between the fixed claw 76 and the movable claw 77.

Next, by rotating the motor 82 in the reverse direction, the chuck unit 71 is slid to the right and the conductive film 7 is moved.
Is pulled out along the lower surface of the suction head 54. When the film is pulled out by a predetermined length, the conductive film 7 is cut by the cutters 67 and 68. At this time, the motor 43 is driven to wind the interlayer paper 8. During the above operation, the suction head 54 and the block 64 lightly vacuum-suck the conductive film 7, and the chuck unit 71 does not interfere with the drawing operation of the conductive film 7.

9A, 9B and 9C show the suction head 54.
The above operation viewed from the lower surface side of is simply shown. FIG. 9A shows the initial state. Next, as shown in FIG. 9B, the chuck unit 71 holds the tip of the conductive film 7 and pulls it out to the right by a predetermined length, and cuts it by the cutters 67 and 68. The chuck unit 71 slides further to the right and holds the cut conductive film 7a at the right end of the suction head 54 (FIG. 9C). By repeating such an operation, a plurality of cut conductive films 7a, 7b, 7c are vacuum-sucked and held on the lower surface of the suction head 54 as shown in FIG. 9D. Next, as shown in FIG.
Rod 53 protrudes, the suction head 54 descends, and the conductive films 7a, 7b, 7c are attached to the electrodes 3 of the lower panel 1. In this case, while the suction head 54 is descending, the cylinder 61 is operated to retract the cover 55. Then, after removing the protective film 8a, a driver is bonded onto the conductive film 7 by a bonding device (not shown).

As described above, according to the suction head 54,
A plurality of (three in this embodiment as described above) conductive films 7 can be attached to the display panel 10 at the same time, and the lead-out length of the conductive film 8 can be adjusted according to the type of the display panel 10. The cutting length of the conductive film 7 can be freely changed.
In the above embodiment, the cylinder 52 and the suction head 5
4, a compressor and a piping structure for supplying air to the block 64 and sucking air are omitted because the drawing becomes complicated. The present invention is not limited to the above embodiment, and the suction head may be independently movable horizontally in the X and Y directions, for example.

[0024]

As described above, according to the present invention, since a plurality of conductive films can be adhered to the display panel at the same time, the work efficiency is remarkably improved, and the length of the conductive film depends on the type of display panel. Can be changed freely.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a conductive film sticking device according to an embodiment of the present invention.

FIG. 2 is a front view of a main portion of a conductive film attaching apparatus according to an embodiment of the present invention.

FIG. 3 is a bottom view of an essential part of a conductive film attaching apparatus according to an embodiment of the present invention.

FIG. 4 is a side sectional view of an essential part of a conductive film attaching apparatus according to an embodiment of the present invention.

5A is a cross-sectional view of a suction head of a conductive film bonding apparatus according to an embodiment of the present invention. FIG. 5B is a cross-sectional view of a suction head of a conductive film bonding apparatus according to an embodiment of the present invention.

FIG. 6 is a cross-sectional view of an essential part of a conductive film attaching apparatus according to an embodiment of the present invention.

FIG. 7 is a cross-sectional view of a block of a conductive film sticking device according to an embodiment of the present invention.

FIG. 8 is a side sectional view of an essential part of a conductive film attaching apparatus according to an embodiment of the present invention.

9A is a bottom view of a suction head according to an embodiment of the present invention. FIG. 9B is a bottom view of a suction head according to an embodiment of the present invention. FIG. 9C is a bottom view of a suction head according to an embodiment of the present invention. d) Bottom view of the suction head of one embodiment of the present invention

FIG. 10 is a sectional view of a conventional display panel.

FIG. 11 is a perspective view of a conventional conductive film sticking device.

[Explanation of symbols]

 7 Conductive Film 10 Display Panel 32 X Table 33 Y Table 35 Stand 41 Supply Reel 52 Cylinder 54 Suction Head 67 Cutter 68 Cutter 71 Chuck Unit

Claims (1)

[Claims] 1. A base part on which a display panel is mounted, a supply reel around which a tape-shaped conductive film is wound, and a display reel which is arranged above the display panel mounted on the base part and is led out from the supply reel. An adsorption head for adsorbing the electrically conductive film on the lower surface, a moving means for relatively moving the display panel on the pedestal part and the adsorption head in the horizontal direction, and the conductive member along the lower surface of the adsorption head. Withdrawal means for withdrawing the membrane,
The conductive film is provided with a cutting means provided in the lead-out path of the conductive film for cutting the conductive film, and a vertical movement means for vertically moving the suction head with respect to the display panel. Sticking device.