JP2008004884A - Bonding apparatus and method of adhesive tape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bonding apparatus of a tape material whereby an adhesive tape can be cut to a predetermined length and bonded to a substrate with high efficiency. <P>SOLUTION: The bonding apparatus includes a supply reel 9 having adhesive tape 2 wound with release tape 8, a cutter 28 which has two cutting edges 27 provided at a predetermined spacing, and forms multiple pairs of cutting lines with the two cutting edges according to a distance corresponding to a predetermined stroke on the adhesive tape having been fed with the predetermined stroke from the supply reel; a pressing tool 13 for bonding, to the substrate, a divided portion formed with a length corresponding to the stroke by the adjacent two pairs of cutting lines formed on the adhesive tape by the cutter; and a take-up reel 12 for taking up the release tape after the adhesive tape is bonded to the substrate. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an adhesive tape attaching apparatus and an attaching method for cutting an adhesive tape attached to a release tape into a predetermined length and attaching it to a substrate.

  For example, in the manufacturing process of flat panel displays such as liquid crystal display panels and plasma display panels, TCP (Tape Carrier Package) is provided on the terminal portion provided on the side surface of a glass substrate, and the diameter in μm units. There is a step of attaching via an adhesive tape made of an anisotropic conductive tape formed of a thermosetting resin containing the metal particles.

  The adhesive tape is cut to a predetermined length and attached to the upper surface of the side portion of the substrate before the TCP is attached to the terminal portion on the upper surface of the side portion of the substrate. A release tape that forms a tape-like member with this adhesive tape is attached to one side of the adhesive tape, and the adhesive tape is wound around a supply reel together with this release tape.

  When sticking TCP with the adhesive tape on the side part upper surface of a board | substrate, first, the adhesive tape paid out from the supply reel with the peeling tape is divided | segmented into predetermined length with a cutting line. The cutting length of the adhesive tape at this time is set to a length corresponding to the terminal portion provided on the side surface of the substrate.

  Next, the adhesive tape divided to a predetermined length is separated from the supply reel by a predetermined stroke so that the divided portion faces the upper surface of one side portion provided with the terminal portion of the substrate. It is pulled out and positioned. The substrate is placed on a stage that is driven in the horizontal direction, and is positioned so that one side portion provided with a terminal portion faces the backup tool.

  When the substrate is positioned, the pressurizing tool having a heater arranged so as to be vertically movable is lowered above the backup tool, and the portion divided by the predetermined length of the adhesive tape is pressed onto the substrate. Heat and stick. That is, the adhesive tape is temporarily pressure-bonded to the upper surface of one side of the substrate. The TCP is attached to the temporarily pressure-bonded adhesive tape, and then the pressure-bonded tape is finally pressure-bonded.

  In order to prevent sticking failure where the end of the adhesive tape is turned up without being securely attached, when the adhesive tape divided into a predetermined length is applied to the substrate by pressing with a pressure tool The entire length of the adhesive tape divided into a predetermined length must be surely pressed by the pressing tool. At that time, the pressurizing tool must press only the part of the adhesive tape divided to a predetermined length and not press the other part.

  Therefore, conventionally, not only the adhesive tape attached to the release tape is cut into a predetermined length, but also two cutting lines are formed at both ends thereof at intervals of 5 to 6 mm. A so-called hollowing is performed by removing a portion between the cutting lines. Thereby, only the part divided by the predetermined length stuck on the board | substrate of an adhesive tape can be reliably pressurized over a full length with a pressurization tool.

Conventionally, in order to hollow out an adhesive tape, as shown in Patent Document 1, two cutting lines are sequentially formed on the adhesive tape one by one at a predetermined interval by a cutter as a cutting device. Next, a portion between the two cutting lines has been removed by a peeling head provided in the peeling apparatus.
JP 2003-51517 A

  However, according to the prior art disclosed in Patent Document 1, in order to hollow out the adhesive tape, two cutting lines must be sequentially formed on the adhesive tape one by one. Therefore, it takes a lot of work time to form the two cutting lines, resulting in a decrease in productivity.

  In addition, since the part where the two cutting lines are formed must be extracted by the peeling head, not only the removal operation may cause a decrease in productivity but also a structure by providing the peeling head. In some cases, the control becomes complicated.

  The present invention enables two cutting lines to be simultaneously formed on the adhesive tape, and attaches the portion divided by the cutting line to the substrate without performing the hollowing out of the adhesive tape. It is in providing the sticking apparatus of the adhesive tape made.

This invention is a sticking device that cuts the adhesive tape attached to the release tape into a predetermined length and attaches it to the upper surface of the side part of the substrate,
A supply reel in which the adhesive tape is wound together with the release tape;
The adhesive tape that has two cutting edges provided at a predetermined interval and is fed from the supply reel and fed with a predetermined stroke is provided with a pair of cutting lines by the two cutting edges. Cutters that form multiple sets at a distance according to the stroke,
An adhering means for adhering a portion divided into a length corresponding to the stroke by two adjacent cutting lines formed by the cutter of the adhesive tape to the substrate;
And a take-up reel for winding the release tape after the adhesive tape is attached to the substrate.

  It is preferable that the cutter is formed by bonding two plate materials having the cutting edge formed at the tip.

  The distance between the two cutting edges of the cutter is preferably 1 to 2 mm.

  The cutter is preferably provided with two cutting edges in a V shape.

This invention is a sticking method of cutting the adhesive tape attached to the release tape into a predetermined length and attaching the adhesive tape to the upper side surface of the substrate,
A step of feeding out the adhesive tape to which the release tape is attached from a supply reel with a predetermined stroke;
Forming a set of cutting lines with two cutters having two cutting edges on the adhesive tape at a distance corresponding to the stroke fed out from the supply reel; and
Adhering to the substrate a portion divided by the two adjacent cutting lines to a length corresponding to the stroke without removing the portion divided by the two cutting lines of the adhesive tape; and It is in the sticking method of the adhesive tape characterized by comprising.

  According to this invention, since the cutter has two cutting edges, two cutting lines can be simultaneously formed on the adhesive tape, and two cutting lines of the adhesive tape are formed. Since it sticks to a board | substrate without hollowing out a part, productivity can be improved.

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

  FIG. 1 shows a sticking device as a tape-like member supply device according to an embodiment of the present invention, and this sticking device includes a substrate stage 5. The substrate stage 5 has a base 6, and a table 7 that is driven in the X, Y, and θ directions by an X drive source 6 a, a Y drive source 6 b, and a θ drive source 6 c is provided on the upper surface of the base 6.

  On the table 7, a substrate W made of a liquid crystal display panel is supplied and vacuum-sucked. On one side portion of the upper surface of the substrate W, as shown in FIG. 3B, a plurality of terminals 1a are formed at a predetermined interval, and in this embodiment, three terminal portions 1 are provided.

  On the upper surface of the side portion of the substrate W where the terminal portion 1 is provided, an adhesive tape 2 made of a double-sided adhesive anisotropic conductive tape, which is cut to a length over the three terminal portions 1 as will be described later. It is attached as shown in FIG. The adhesive tape 2 is made of a thermosetting resin mixed with metal particles. Then, an electronic component 3 such as TCP is attached to each terminal portion 1 via an adhesive tape 2.

  As shown in FIG. 1, the adhesive tape 2 is attached to a peeling tape 8 that forms a tape-like member 4 with the adhesive tape 2, and is wound around a supply reel 9. The tape-like member 4 fed out from the supply reel 9 is guided by the pair of guide rollers 11 with the adhesive tape 2 facing downward, and is taken up by the take-up reel 12. As a result, the tape-like member 4 travels so that the portions guided by the pair of guide rollers 11 face in parallel above the terminal portion 1 of the substrate W placed on the table 7.

  Above the table 7, a pressurizing tool 13 as a sticking means having a heater 13a is provided so as to be movable up and down by a pressurizing drive source. The adhesive tape 2 of the tape-like member 4 is cut into a predetermined length by a cutting mechanism 23 described later, and the cutting portion 2a having the predetermined length is positioned below the pressure tool 13 as described later.

  When the cut portion 2a of the adhesive tape 2 is positioned, the pressing tool 13 is lowered, and the cut portion 2a of the adhesive tape 2 is temporarily placed on the portion where the terminal portion 1 on the side portion of the substrate W is provided. Crimped. Thereafter, the release tape 8 is peeled off from the adhesive tape 2 by a release roller (not shown), and only the release tape 8 is taken up on the take-up reel 12.

  The tape-like member 4 is conveyed by a feeding device 20. The feeding device 20 has a chuck 21 formed so as to be able to sandwich the peeling tape 8. The chuck 21 is non-rotatably guided by a guide body (not shown), and is linearly driven by a drive screw 22a that is rotationally driven by a feed drive source 22b such as a servo motor.

  Accordingly, when the chuck 21 sandwiches the release tape 8 and the drive screw 22a is driven to rotate, and the chuck 21 is driven in the direction indicated by the arrow X in FIG. The cutting portion 2a is extended in the X direction and can be positioned below the pressurizing tool 13.

  As shown in FIG. 4, the supply reel 9 is driven to rotate by a feeding drive source 15 to feed out the tape-like member 4, and the take-up reel 12 is driven to rotate by a take-up drive source 16 and peeled off. The tape 8 is wound up. The feeding drive source 15, the take-up drive source 16 and the feed drive source 22 b are controlled by a control device 18.

  The adhesive tape 2 is cut to a predetermined length by the cutting mechanism 23 on the upstream side of the substrate W in the transport direction. The cutting mechanism 23 has a vertical drive source 24 such as a cylinder or a linear motor. The vertical drive source 24 is arranged with the drive shaft 25 vertical, and an attachment body 26 is provided at the upper end thereof.

  In the mounting body 26, as shown in FIG. 2, two plate members 28a each having a cutting edge 27 formed by grinding only one surface at the tip thereof are formed so that the two cutting edges 27 are V-shaped. A bonded cutter 28 is provided. The thickness of the plate material 28a is set so that the distance g between the tips of the two cutting edges 27 of the cutter 28 is 1 to 2 mm.

  As shown in FIG. 1, a holding block 31 is disposed on the upper surface side of the conveyed tape-like member 4 so as to face the cutter 28. The holding block 31 holds the tape-like member 4 from the peeling tape 8 side when the cutting line S is formed on the adhesive tape 2 by the cutter 28.

As shown in FIG. 5 (a), the vertical drive source 24 starts from the state where the cutter 28 is in the lowered position, and the cutting blade 27 cuts the adhesive tape 2 as shown in FIG. 5 (b). Drive until the height reaches 8. That is, the cutter 28 is driven to rise to a so-called half-cut position where the cutting edge 27 cuts only a part of the peeling tape 8 in the thickness direction. Thereby, two cutting lines S are formed on the adhesive tape 2 at intervals corresponding to the interval g between the tips of the two cutting edges 27 as shown in FIG.
The driving of the vertical drive source 24 is controlled by the control device 18.

  An air dancer 35 is provided between the supply reel 9 and the cutting mechanism 23 to apply tension to the tape-like member 4 fed from the supply reel 9 by air pressure. The air dancer 35 has a dancer case 36. The dancer case 36 is formed in a flat box shape with one side opened, and the opening 36a is directed sideways and the direction intersecting the longitudinal direction is arranged along the vertical direction. That is, the dancer case 36 is disposed sideways.

  A suction blower 37 as a suction means is provided on the side surface of the dancer case 36 opposite to the opening 36a. The suction blower 37 sucks the gas in the dancer case 36 to make the inside negative.

  The tape-like member 4 fed out from the supply reel 9 is guided by a guide roller 38a so as to run against the opening 36a of the dancer case 36. In this state, if the suction blower 37 is operated to apply a negative pressure in the dancer case 36, the tape-like member 4 is drawn into the dancer case 36 by the suction force of the suction blower 37 and is bent. That is, when the suction force of the suction blower 37 acts on the tape-like member 4, a tension corresponding to the suction force is applied to the tape-like member 4.

  The opening 36a of the dancer case 36 is provided with a pair of guide rollers 38b for guiding and smoothly bending the tape-like member 4 drawn into the dancer case 36. Further, a pressurized gas that urges the tape-like member 4 into the dancer case 36 when the tape-like member 4 is drawn into the dancer case 36 by the suction force of the suction blower 37 is applied to a portion facing the opening 36a. A pressurizing nozzle 39 is disposed as pressurizing means for spraying.

  An air pipe 40 a having an open / close control valve 40 is connected to the pressure nozzle 39. The control device 18 controls the start / stop of the suction blower 37 and the opening / closing of the opening / closing control valve 40.

  The dancer case 36 is provided with a plurality of, for example, first to fifth detection sensors 41 to 45 (shown in FIG. 4) for detecting the amount of the tape-like member 4 that has been sucked and drawn therein. The case 36 is sequentially provided from the opening 36a side toward the closed end side at a predetermined interval.

  Detection signals of the first to fifth detection sensors 41 to 45 are output to the control device 18, respectively, and the rotation speed of the supply reel 9 by the feeding drive source 15 is controlled based on the detection signals. Thereby, the length by which the tape-like member 4 is fed out from the supply reel 9 per unit time is controlled. That is, the curved length of the tape-like member 4 drawn into the dancer case 36 is maintained substantially constant regardless of the change in the winding amount by the winding reel 12.

  In the sticking device having such a configuration, the feeding drive source 15, the take-up drive source 16, and the feeding device 20 are driven synchronously by the control device 18, so that the tape-like member wound around the supply reel 9. 4 is fed out by a chuck 21 driven by a predetermined stroke of the feeding device 20 at a predetermined length corresponding to the stroke.

  When the tape-like member 4 is drawn out from the supply reel 9 by a predetermined length, the cutter 28 is moved from the lowered position shown in FIG. 5A to the raised position shown in FIG. 5B by the vertical drive source 24 of the cutting mechanism 23. The two cutting edges 27 form two cutting lines S on the adhesive tape 2 of the tape-like member 4 as shown in FIG.

  When the cutting line S is formed, the cutter 28 is driven in the downward direction, and after the tape-like member 4 is fed out by the chuck 21 with a predetermined stroke, the cutting line S is formed by the cutter 28 repeatedly. . As a result, a plurality of pairs of cutting lines S paired with each other are formed on the adhesive tape 2 at a distance corresponding to the stroke fed out by the chuck 21 of the feeding device 20.

  As shown in FIG. 1, when the cut portions 2 a divided by two adjacent cutting lines S of the adhesive tape 2 are positioned with respect to the terminal portion 1 of the substrate W placed on the table 7, pressurization is performed. The tool 13 is driven in the downward direction by the pressure driving source 14.

  Thereby, the cut portion 2 a divided by the two sets of cutting lines S of the adhesive tape 2 is attached to the substrate W. After the sticking, the peeling tape 8 is peeled from the cut portion 2a by a peeling roller (not shown), and the peeling tape 8 is wound around a take-up reel 12 that is driven to rotate in synchronization with the movement of the chuck 21.

  Thus, since the cutter 28 is provided with the two cutting edges 27, two cutting lines S can be simultaneously formed on the adhesive tape 2 by driving the cutter 28 once in the upward direction. . That is, conventionally, since the cutting lines S are formed one by one by one cutting edge, in order to form the two cutting lines S, the cutter 28 has to be driven up and down twice. According to the embodiment, since the two cutting lines S can be formed simultaneously by moving the cutter 28 up and down once, productivity can be improved.

  When sticking the cut portion 2a of the adhesive tape 2 whose both ends are separated by two cutting lines S to the substrate W, the portion between the two cutting lines S is not removed (hollow out). The cut part 2a is adhered to the substrate.

  When the cutting part 2a of the adhesive tape 2 is pressed and stuck to the substrate W by the pressing tool 13, the part between the two cutting lines S of the adhesive tape 2 (FIGS. 5B and 5C). If t) is not hollowed out, the portion t remains on the peeling tape 8 or adheres to the substrate W.

  However, by providing the cutter 28 with the two cutting edges 27 in a V shape, the distance between the cutting edges 27 can be made sufficiently small. That is, the interval between the two cutting lines S can be reduced to about 1 to 1.5 mm.

  Therefore, even if the portion t between the two cutting lines S of the adhesive tape 2 remains on the peeling tape 8 or adheres to the substrate W, the portion is very small. It does not affect the process and does not cause a problem in the next process due to remaining on the substrate W.

  That is, the two plate members 28a are bonded together to form the cutter 28, and the two cutting edges 27 of the cutter 28 are formed in a V shape, so that the two cutting edges 27 of the cutter 28 have a predetermined interval. In addition, the distance can be made sufficiently small according to the thickness of the plate material 28a.

  This eliminates the need for a hollowing operation for removing the portion between the two cutting lines S formed on the adhesive tape 2, which can not only improve productivity, By eliminating the mechanism for removal, the configuration and control of the entire apparatus can be simplified.

  In addition, since the interval between the two cutting lines S can be reduced, the unnecessary portion t of the adhesive tape 2 is small, so that the waste of the adhesive tape 2 is reduced and the production cost can be reduced. Become.

  In the above-described embodiment, the front ends of the two plate members are obliquely ground, and these plate members are bonded to each other so that the cutter has two cutting edges in a V shape. Alternatively, the V-shaped groove may be ground and lowered to form two cutting edges in a V-shape.

  Further, the cutter 28A formed by laminating two plate members 28a forms a flat portion 28b at the lower end of the cutting edge 27 as shown in FIG. 6, and the flat portion 28b is interposed between the pair of cutting edges 27. Alternatively, it may be formed in a substantially V shape.

  The height h of the cutting edge 27 is made larger than the thickness of the adhesive tape 2 so that the flat portion 28b does not come into contact with the adhesive tape 2 when the cutting line S is formed on the adhesive tape 2. .

  Thereby, the part cut by the two cutting lines S of the adhesive tape 2 can be set so that the area of the part attached to the peeling tape 8 is larger than the contact area with the cutting edge 27 of the cutter 28. Therefore, the portion cut by the two cutting lines S of the adhesive tape 2 can be left on the release tape 8 without being attached to the cutter 28. That is, it is possible to prevent the portion cut by the pair of cutting lines S between the pair of cutting edges 27 of the cutter 8 from being clogged.

The schematic block diagram of the sticking apparatus of the tape-shaped member which shows one embodiment of this invention. The front view which expands and shows a cutter. (A) is explanatory drawing of the board | substrate with which TCP was stuck, (b) is explanatory drawing of the board | substrate before TCP is stuck. The block diagram which shows the control system of the sticking apparatus. (A) is a view when the cutter is in the lowered position, (b) is a view when the cutter is raised, and (c) is an enlarged view of a state in which two cutting lines are formed on the adhesive tape of the tape-like member. FIG. The front view which expands and shows the cutter which shows other embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Adhesive tape, 4 ... Tape-shaped member, 8 ... Stripping tape, 9 ... Supply reel, 12 ... Take-up reel, 18 ... Control device, 13 ... Pressure tool (sticking means), 27 ... Cutting blade, 28 ... Cutter.

Claims (5)

A sticking device that cuts the adhesive tape attached to the release tape into a predetermined length and attaches it to the upper surface of the side of the substrate,
A supply reel in which the adhesive tape is wound together with the release tape;
The adhesive tape that has two cutting edges provided at a predetermined interval and is fed from the supply reel and fed with a predetermined stroke is provided with a pair of cutting lines by the two cutting edges. Cutters that form multiple sets at a distance according to the stroke,
An adhering means for adhering a portion divided into a length corresponding to the stroke by two adjacent cutting lines formed by the cutter of the adhesive tape to the substrate;
An adhesive tape sticking apparatus comprising: a take-up reel that winds up the release tape after the adhesive tape is stuck to the substrate.   2. The adhesive tape sticking apparatus according to claim 1, wherein the cutter is formed by laminating two sheets having the cutting edge formed at the tip thereof.   2. The adhesive tape sticking apparatus according to claim 1, wherein a distance between two cutting edges of the cutter is 1 to 2 mm.   The adhesive tape sticking device according to claim 1, wherein the cutter has two cutting edges in a V shape. A sticking method in which the adhesive tape attached to the release tape is cut to a predetermined length and attached to the upper surface of the side of the substrate,
A step of feeding out the adhesive tape to which the release tape is attached from a supply reel with a predetermined stroke;
Forming a set of cutting lines with two cutters having two cutting edges on the adhesive tape at a distance corresponding to the stroke fed out from the supply reel; and
Adhering to the substrate a portion divided by the two adjacent cutting lines to a length corresponding to the stroke without removing the portion divided by the two cutting lines of the adhesive tape; and A method for sticking an adhesive tape, comprising:

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