JP3147548B2 - Apparatus for sticking conductive film - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive film bonding apparatus for bonding a conductive film for bonding driver leads 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
Electronic components manufactured by the bonding method are often used. Also, as a connection method between the driver and the display panel,
A method using an anisotropic conductive film is known. FIG.
Shows a cross section in which a driver manufactured by the TAB method is connected to a display panel. The display panel 10 is formed by laminating a lower panel 1 and an upper panel 2.
An electrode 3 is provided at a side end of the lower panel 1. The driver 4 is formed by bonding a chip 6 to a lead 9 of a sheet 5 obtained by punching a film carrier, and connecting the lead 9 attached to the sheet 5 via an anisotropic conductive film 7. To the electrode 3.

Next, a conventional sticking apparatus for sticking the conductive film 7 on the electrode 3 will be described with reference to FIG.
The supply reel 11 includes a tape-shaped conductive film 7 and an interlayer tape 8.
Is wound, and a take-up reel 12 for the interlayer tape 8 is provided below the supply reel 11. When the motor 13 is driven to rotate the belt 14, the supply reel 11 rotates to feed out the conductive film 7 and the interlayer tape 8, and the interlayer tape 8 is wound on the take-up reel 12. Reference numeral 15 denotes a guide roller for guiding the feeding of the conductive film 7 and the interlayer tape 8.

[0004] 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 distal end of the conductive film 7, 7 is provided with a second chuck claw 19 for chucking the base end side and a scissor-type cutter 20 for cutting the conductive film 7. 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 comprises a main body block 25, a horizontally long adsorber 26 provided below the main body block 25, and an actuator 27 for moving the adsorber 26 up and down. ing. The head 24 is held on a moving table (not shown), and moves in the X and Y directions by driving the moving table. The device for attaching this conductive film 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 claws 18 and the second chuck claws 19. Therefore, the head 2 is located directly above the conductive film 7.
When 4 arrives and the actuator 27 is driven, the adsorber 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 claws 18 is released.

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

[0008]

The arrangement 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 varies accordingly. Therefore, in the above-mentioned conventional sticking device, the adsorbers 26 having different horizontal dimensions are different depending on the type of the display panel 10.
Must be prepared each time, and the number of heads 24 increases accordingly, resulting in an increase in cost.
In addition, there is a problem that maintenance management of the head 24 becomes troublesome. Further, in the above-described conventional sticking apparatus, an operation of cutting the conductive film 7, an operation of sucking the cut conductive film 7 by the head 24, an operation of moving the head 24 above the display panel 10, and Since many operations such as the operation of vertically moving the conductive film 7 and attaching the conductive film 7 to the display panel 10 must be repeated and the conductive film 7 must be adhered to the display panel 10 one by one, the work efficiency does not increase. There was a point.

Accordingly, an object of the present invention is to provide an apparatus for attaching a conductive film, which can easily attach conductive films of various lengths to electrodes of a display panel.

[0010]

SUMMARY OF THE INVENTION 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. A suction head that is disposed above and suctions the conductive film led out from the supply reel to a lower surface, and a moving unit that relatively moves the display panel and the suction head on the base unit in the horizontal direction, A drawing means for drawing out the conductive film along the lower surface of the suction head; a cutting means provided in a lead-out path of the conductive film for cutting the conductive film; and performing a vertical movement of the head with respect to the panel. The device for attaching the conductive film is constituted by the vertical movement means for moving.

[0011]

According to the above construction, 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, and this operation is repeated a plurality of times to thereby obtain a plurality of sheets. Adsorb the conductive film to the lower surface of the suction head,
A plurality of conductive films can be simultaneously attached to a display panel.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an overall perspective view of an apparatus for attaching a conductive film. An X table 32 and a Y table 33 orthogonal to each other are arranged on the main body box 31.
A turntable 34 is provided on the upper surface 2. A stand 35 on which the display panel 10 is placed is placed on the turntable 34.
Is provided. When the motor 36 provided on the X table 32 is driven, the display panel 10 moves horizontally in the X direction. When the motor 37 provided on the Y table 33 is driven, the display panel 10 moves in the Y direction. Align with. Turntable 34
Rotates the display panel 10 horizontally by 90 ° in order to attach the conductive film 7 to the orthogonal sides of the display panel 10.

An upright wall 40 is provided above the main body box 31. 44 is a support arm of 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 supply reel 41 has a tape-shaped conductive film 7 wound thereon, and the take-up reel 42 winds the interlayer paper 8 wound together with the conductive film 7. 43
Is a drive motor for 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 mounted on a shelf 51 projecting from the front of the upright wall 40. A rod 53 of the cylinder 52 penetrates the shelf 51 (see also FIGS. 3 and 4), and a suction head 54 is coupled to a lower end thereof. The suction head 54 has a horizontally long box shape, and a plurality of suction holes 56 for vacuum suction of the conductive film 7 are formed in the inside thereof at a pitch.

In FIG. 4, a cover 55 is covered by the suction head 54. In FIG. 5A, the cover 5
A cylinder 61 is mounted on the upper portion of the cylinder 5, and the suction head 54 is connected to a rod 62 of the cylinder 61.
Normally, as shown in FIG. 5A, the rod 62 of the cylinder 61 is retracted. In this state, the lower end 55a 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 lower end 55 a of the cover 55 projecting downward from the lower surface of the suction head 54 slides along the lower surface of the suction head 54. It is a guide section that guides you. FIG. 5B shows a state in which the conductive film 7 is attached to the electrode 9 on the side edge of the display panel 10. At this time, the rod 62 of the cylinder 61 protrudes, the lower end portion 55a of the cover 55 is pulled upward from the lower surface of the suction head 54, and the conductive film 7 is
(See also chain line in FIG. 4).

Next, a mechanism for extracting the conductive film 7 will be described.
In FIG. 2, the conductive film 7 wound on the supply reel 41
Is led out along the guide roller 63 to near the left end of the suction head 54. A block 64 is provided between the guide roller 63 and the suction head 54 as a means for holding the posture of the leading end 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 position. 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. Reference numeral 8a denotes a protective film adhered on the upper surface of the conductive film 7, which is peeled and removed before bonding a driver on the conductive film 7 after the conductive film 7 is adhered to the display panel 1.

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 a 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 denotes a chuck unit for chucking the front end of the conductive film 7. The chuck unit 71 includes an upper bracket 72 and a lower bracket 73. A solenoid 74 is mounted on the upper bracket 72, and a lower bracket 73 is connected to a rod 75 thereof. A fixing claw 76 is attached to the upper bracket 72, and a lower bracket 73 is provided.
Is equipped with a movable claw 77. When the rod 75 is retracted, the movable claw 77 rises and clamps the leading end of the conductive film 7 between the fixed claw 76 and the movable claw 77. When the rod 75 projects and the movable claw 77 descends, the clamped state is released. .

The chuck unit 71 includes the suction head 5.
4 moves along the lower surface, and the moving mechanism will be described next. FIG. 3 is a bottom view of a main part, in which a frame 81 is mounted on the back of the upright wall 40.
Is mounted with a motor 82. A ball screw 83 is connected to the motor 82. The ball screw 83 is disposed parallel to the suction head 54 along the rear surface of the upright wall 40, and the tip 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. 4 and 8, reference numeral 86 denotes the standing wall 40.
A guide rail 87 provided on the back surface of the nut 85 is a slider provided on the front surface of the nut 85 and fitted to 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.
1 slides to the right.

This device for attaching a conductive film has the above-described configuration, and the overall operation will be described next. In FIG.
The display panel 10 is placed on the base 35 and the X table 3
2. By driving the Y table 33 and the turntable 34, the electrodes 3 of the display panel 10 are positioned immediately below the suction head 54. Next, as shown in FIG. 6, the chuck unit 71 approaches the tip of the conductive film 7 which is held in a horizontal posture by being vacuum-adsorbed to the lower surface of the block 64, and the rod 75 of the solenoid 74 is pulled. As a result, the tip of the conductive film 7 is clamped between the fixed claw 76 and the movable claw 77.

Then, by rotating the motor 82 in the reverse direction, the chuck unit 71 is slid to the right, and the conductive film 7 is rotated.
Is pulled out along the lower surface of the suction head 54. When the conductive film 7 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, so that there is no problem in the operation of pulling out the conductive film 7 by the chuck unit 71.

FIGS. 9A, 9B and 9C show the suction head 54.
2 simply shows the above operation as viewed from the lower surface side of FIG. FIG. 9A shows an initial state. Next, as shown in FIG. 9B, the chuck unit 71 clamps the leading end of the conductive film 7, draws it out to the right by a predetermined length, and cuts it with the cutters 67 and 68. The chuck unit 71 further slides to the right to hold 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 held on the lower surface of the suction head 54 by vacuum suction 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. Subsequently, 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 simultaneously adhered to the display panel 10, and the lead-out length of the conductive film 8 is 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, 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-described embodiment. For example, the suction head may be independently movable horizontally in the X and Y directions.

[0024]

As described above, according to the present invention, a plurality of conductive films can be simultaneously adhered to the display panel, so that the work efficiency is remarkably improved. Can be changed freely.

[Brief description of the drawings]

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

FIG. 2 is a front view of a main part of a conductive film sticking apparatus according to one embodiment of the present invention.

FIG. 3 is a bottom view of a main part of the conductive film sticking apparatus according to one embodiment of the present invention.

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

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

FIG. 6 is a sectional view of a main part of a conductive film sticking apparatus according to an embodiment of the present invention.

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

FIG. 8 is a side sectional view of a main part of a conductive film sticking apparatus according to one embodiment of the present invention.

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

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

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

[Explanation of symbols]

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

Claims (1)

(57) [Claims] 1. A base on which a display panel is mounted, a supply reel wound with a tape-shaped conductive film, and a supply reel disposed above the display panel mounted on the base and led out of the supply reel. A suction head for sucking the drawn conductive film on the lower surface, a moving unit for relatively moving the display panel and the suction head on the base portion in a horizontal direction, and the conductive material along the lower surface of the suction head. Withdrawing means for extracting the membrane;
A cutting means provided in a lead-out path of the conductive film to cut the conductive film; and a vertically moving means for vertically moving the suction head with respect to the display panel. Sticking device.