JP3409560B2 - Anisotropic conductive tape sticking device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for attaching an anisotropic conductive tape to an object such as a liquid crystal panel or an electronic component. Things. 2. Description of the Related Art As a method of mounting an electronic component on a substrate,
A method using an anisotropic conductive tape (hereinafter, referred to as ACF) is known. ACF is an adhesive tape that is adhered to the electrodes of a substrate such as a liquid crystal panel, and the leads of the electronic component are bonded from above, or the tape is attached in advance to the lower surface of the leads of the electronic component. After wearing
A method of bonding on an electrode of a substrate is known. Since the ACF has an adhesive property and is difficult to handle as it is, a separate tape is laminated on both sides of the ACF to form a three-layer laminated tape, which is wound around a supply reel and handled. And A
When affixing the CF to the electrode of the substrate or the lead of the electronic component, the laminated tape is pulled out from the supply reel.In this case, in order to perform the adhesion successfully, the laminated tape is stably pulled out from the supply reel. In addition, it is necessary to surely separate one of the separated tapes from the drawn-out laminated tape. [0004] However, a technique for stably pulling out the laminated tape from the take-up reel and peeling off the separate tape has not been established so far, so that the ACF attaching work can be stably performed. There was a problem that it was difficult to perform it. Accordingly, an object of the present invention is to provide an apparatus for attaching an anisotropic conductive tape which can stably attach an ACF to an object such as an electrode of a substrate or a lead of an electronic component. [0006] For this purpose, the anisotropic conductive tape sticking apparatus of the present invention winds a three-layer laminated tape in which a separate tape is laminated on both sides of an anisotropic conductive tape. A supply reel to be rotated, a pull-out roller for pulling out the laminated tape from the supply reel while holding the laminated tape on the peripheral surface by vacuum suction, and a suction device for separating one of the laminated tapes pulled out from the supply reel by a suction device.
A separating tape separating unit that separates one of the separate tapes from the anisotropic conductive tape between the supply reel and the pull-out roller by sucking into the supply reel, and tensioning the laminated tape downstream of the draw-out roller. And an application tool downstream of the tension application means for applying an anisotropic conductive tape to the object by pressing it. [0007] According to the present invention, one of the separate tapes of the laminated tape having a three-layer structure is peeled off.
The release means is detached from the ACF, and then detemir Nshi <br/> tio down the predetermined tension is imparted to the I Riseki layer tape applying means, it is possible to stably attached an ACF to an object. Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a front view of an ACF attaching apparatus according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view of a tension applying means of the laminated tape, and FIG. FIG. 4 is a side sectional view of a suction portion of the separate tape. In FIG. 1, reference numeral 1 denotes a main body frame;
Elements described below are provided. Reference numeral 2 denotes a supply reel on which a laminated tape 3 is wound. As shown in FIG. 2, the laminated tape 3 has a three-layer structure in which separate tapes 5a and 5b are attached to both surfaces of an ACF 4 and laminated. In FIG. 1, a draw-out roller 6 is provided above the supply reel 2. Guide rollers 7 and 8 are provided on the left and lower sides of the pull-out roller 6, respectively. The pull-out roller 6 is driven and rotated by a motor M and a belt 9 provided on the back surface of the main body frame 1. FIG.
As shown in (1), a large number of suction holes 10 are formed in the drawing roller 6 radially. The center hole 11 is connected to a first suction device 12 through a tube 13.
Reference numeral 14 denotes a pressure regulating valve provided in the middle of the tube 13. A half-ring-shaped shutter 15 is provided in the center hole 11 of the drawing roller 6. This shutter 1
Reference numeral 5 is fixed, and closes the suction hole 10 located in the lower half of the multiple suction holes 10 formed radially. When the first suction device 12 is driven to suck the center hole 11, the separate tape 5 b running along the peripheral surface of the upper half portion of the pull-out roller 6 is vacuum-sucked and held, whereby the separate tape 5 b is held. Can be prevented from slipping on the peripheral surface of the pull-out roller 6, and the ACF 4 can be reliably pulled out from the supply reel 2. In FIGS. 1 and 2, a suction case 20 made of a transparent bottomed cylindrical body is provided between the pull-out roller 6 and the guide roller 7. The bottom of the suction case 20 is connected to a second suction device 23 via a tube 21 and a pressure regulating valve 22 (see also FIG. 1). Therefore, by driving the second suction device 23 to vacuum-suction the inside of the suction case 20, the laminated tape 3 hanging down in the suction case 20 is vacuum-sucked to apply a predetermined tension to the laminated tape 3. That is, the elements denoted by reference numerals 20 to 23 are the tension applying means 19. in this case,
By vacuum-suctioning the laminated tape held by the draw-out roller 6, a predetermined amount of tension is reliably applied to the laminated tape 3 on the downstream side of the draw-out roller 6, and the ACF 4 is reliably transferred to the suction case 20. Can be transported. A first part is located above the side of the suction case 20.
A sensor 24 is provided, and a second sensor 25 is provided below. The first sensor 24 and the second sensor 25 optically detect the lower end of the laminated tape that hangs inside the suction case 20, that is, the amount of slack,
The control unit 26 is notified. In FIG. 1, a guide roller 29 is provided above the supply reel 2, and a suction section 30 for collecting the separate tape 5a is provided above the guide roller 29. In FIGS. 3 and 4, reference numeral 31 denotes a case that is a main component of the suction unit 30. The inside of the case 31 is partitioned into a front chamber A and a rear chamber B by a porous ventilation plate 32. A transparent plate 33 for visually recognizing the inside of the case 31 is provided on the front surface of the case 31.
Is mounted, and a tube 34 connected to the first suction device 12 is connected to the back surface. 34a is a joint of the tube 34, and 35 is a pressure regulating valve provided in the middle of the tube 34. An introduction portion 36 for the separate tape 5a is provided on the side surface of the front room A. Therefore, when the first suction device 12 is driven, one of the separate tapes 5a is forcibly peeled off from the ACF 4 between the supply reel 2 and the pull-out roller 6, and is sucked into the front chamber A of the case 31. Collected. In this case, by appropriately adjusting the suction force in the case 31, the separation tape 5a is always kept at a predetermined strength by the ACF.
4 and can be recovered. Further, the other separate tape 5b of the laminated tape 3 is lightly held on the peripheral surface of the pull-out roller 6, so that the separate tape 5a can be sucked into the case 31 and reliably separated. Front room A
The separated tape 5a collected inside is taken out by removing the hook 38 and rotating the front wall 31a about the hinge 37 to open it. In FIG. 1, a suction block 40 is provided below the main body frame 1. Suction block 40
Inside the suction hole 41 connected to the second suction device 23
Are formed. 42 is a pressure regulating valve. The laminated tape 3 around the guide roller 8 is separated from the separated tape 5b.
With the ACF 4 on the lower side and the right side along the lower surface of the suction block 40. A cutter 43 is provided below the suction block 40. The cutter 43 is driven by the actuator 44 to move up and down, and cuts the lower ACF 4 of the laminated tape 3 at a predetermined pitch from among the laminated tapes 3 which are vacuum-adsorbed on the lower surface of the suction block 40 and whose traveling is temporarily stopped. In FIG. 1, a movable table 50 is provided on the side of the main body frame 1. Movable table 50
A substrate 51 to which the ACF 4 is to be attached is placed on the top. When the movable table 50 is driven, the substrate 51 moves in an arbitrary direction, and its position is adjusted. A sticking tool 52 is provided above the movable table 50. The sticking tool 52 is driven up and down by a vertical moving means (not shown) to push the ACF 4 against the substrate 51 and stick it. A take-up reel 53 is provided downstream of the movable table 50. Reference numerals 54 and 55 denote transport rollers provided between the movable table 50 and the take-up reel 53, and chuck the separate tape 5b from above and below and transport it to the right. 56 is a guide roller. The take-up reel 53 and the transport rollers 54 and 55 are driven and rotated by a motor (not shown). The transport rollers 54 and 55 pull the separate tape 5 b rightward while taking up the take-up reel 5.
3 to the ACF 4 by the cutter 43.
Is reliably cut into a predetermined length, and the cutting means draws out the cut ACF 4 below the attaching tool 52. The ACF sticking apparatus is configured as described above. Next, the operation of sticking the ACF 4 on the substrate 51 will be described. In FIG. 1, the laminated tape 3 wound on the supply reel 2 is pulled out from the supply reel 2 by rotation of the drawer roller 6. One of the separate tapes 5 a is forcibly peeled off from the ACF 4 in front of the drawer roller 6 by driving the suction unit 30, and is collected inside the case 31. The laminated tape 3 having a two-layer structure of the ACF 4 and the other separate tape 5b circulates along the pull-out roller 6, runs down in the suction case 20, and then circulates the guide roller 7. Further lower guide roller 8
And go to the right in a horizontal position. Next, the laminated tape 3 is vacuum-sucked on the lower surface of the suction block 40 and temporarily stops running, whereupon the cutter 43 moves up and down, whereby the ACF 4 is cut into a predetermined length. Next, the vacuum suction of the suction block 40 is released and the laminated tape 3 travels to the right, and the ACF 4 cut by the cutter 43 reaches the upper surface of the substrate 51, where the traveling is temporarily stopped. . Next, the attaching tool 52 is lowered and
The CF4 is pressed onto the electrode of the substrate 51 to be bonded, and then the bonding tool 52 is lifted to release the pressed state. AC
The separate tape 5b separated from the ACF 4 by attaching the F4 to the substrate 51 is taken up on the take-up reel 53 and collected. The take-up reel 53 and the transport rollers 54 and 55 are controlled by control means (not shown) so as to rotate when the separate tape 5b needs to run. As described above, when the attaching tool 52 is moved up and down to attach the ACF 4 to the substrate 51, the laminated tape 3 needs to be positioned on the substrate 51 in a horizontal position with an appropriate tension. . Therefore, the laminated tape 3 in the suction case 20 is sucked downward, and the transport rollers 54,
At 55, a predetermined tension is applied to the laminated tape 3 by chucking and pulling the separate tape 5b. If the first sensor 24 detects the lower end of the laminated tape 3,
Since the feeding amount is small, the drawer roller 6 is rotated to increase the feeding amount. If the second sensor 25 detects the lower end of the laminated tape 3, the rotation of the draw-out roller 6 is stopped because the amount of the laminated tape 3 fed from the supply reel 2 is too large. That is, the pull-out roller 6, the first sensor 24, the second sensor 25, the control unit 26, the motor M
Is a means for managing the amount of feeding of the laminated tape 3. (Embodiment 2) FIG. 5 is a front view of an ACF attaching apparatus according to Embodiment 2 of the present invention. The ACF sticking apparatus according to the second embodiment is the same as that according to the first embodiment.
Instead of the take-up reel 53 of the sticking device of F, the suction unit 30
a is provided. Also, instead of the transport rollers 54 and 55,
Chuck members 57 and 58 as pull-out means are provided. The chucks 57 and 58 chuck the separate tape 5b from above and below, and are driven by a driving unit (not shown) to pull the separate tape 5b rightward.
The ACF 4 is pulled out below the attaching tool 52. The same elements as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Accordingly, in this case, the separate tape 5b peeled off from the ACF 4 is sucked into the case 31 and collected. By appropriately adjusting the suction force of the suction unit 30a, the separate tape 5b is constantly pulled and collected with a constant force, and a predetermined tension is applied to the separate tape 5b, and the AC by the attaching tool 52 is applied.
The sticking work of F4 can be performed. [0026] According to the present invention, the Risho constant tension by the tension applying means is applied to the laminated tape unwound from the supply reel, stably attached an ACF to an object can do. Further, one of the separated tapes of the three-layered laminated tape is separated into ACFs by a separate tape peeling means.
It is peeled off from, and Ri by the then detemir Pensions grant means
The predetermined tension imparted to the product layer tape can be stably attached an ACF to an object.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an ACF adhering device according to a first embodiment of the present invention. FIG. 2 is a tension imparting of a laminated tape of the ACF adhering device according to the first embodiment of the present invention. FIG. 3 is a front cross-sectional view of a suction portion of a separate tape of the ACF adhering device according to the first embodiment of the present invention. FIG. 4 is a separate view of an ACF adhering device according to the first embodiment of the present invention. FIG. 5 is a front cross-sectional view of a tape suction unit. FIG. 5 is a front view of an ACF adhering device according to a second embodiment of the present invention. DESCRIPTION OF SYMBOLS 2 Supply reel 3 Laminated tape 4 Anisotropic conductive tape (ACF) 5a; 5b Separate tape 6 Pull-out roller 12 First suction device 19 Tension applying means 20 Suction case 23 Second suction device 30 Suction unit 31 Case 40 Suction block 43 Cutter 50 Movable table 51 Substrate 52 Pasting Attaching tool 53 Take-up reel 54, 55 Transport rollers 57, 58 Chuck

Claims (1)

(57) Claims: 1. A supply reel for winding a three-layer laminated tape in which a separate tape is laminated on both sides of an anisotropic conductive tape, and a peripheral surface of the laminated tape from the supply reel. Roller, which is pulled out while being held by vacuum suction, and one of the laminated tapes drawn out from the supply reel , is sucked into the case by a suction device.
A tension imparting means for imparting a separate tape peeling means for peeling from the anisotropic conductive tape, the tension on the laminate tape be downstream of the extraction rollers between the draw-out roller and the supply reel by, the tensioning And a sticking tool for pressing and sticking the anisotropic conductive tape to an object downstream of the means.