JP4796901B2 - Tape-like member supply device and supply method - Google Patents

Description

  The present invention relates to a tape-shaped member supply device and a supply method for winding a tape-shaped member fed from a supply reel with a take-up reel.

  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 exists the process of sticking through the anisotropic conductive tape which has the adhesiveness formed of the thermosetting resin containing these metal particles.

  The anisotropic conductive 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 the anisotropic conductive tape is attached to one side of the anisotropic conductive tape, and the anisotropic conductive tape is wound around a supply reel together with the release tape. ing.

  When the TCP is attached to the upper surface of the side portion of the substrate with the anisotropic conductive tape, first, the anisotropic conductive tape fed out from the supply reel together with the release tape is cut into a predetermined length. The cutting length of the anisotropic conductive tape at this time is set to a length corresponding to the terminal portion provided on the upper surface of the side portion of the substrate.

  Next, the anisotropic conductive tape cut to a predetermined length is pulled out together with the peeling tape from the supply reel so that the cut portion faces the upper surface of one side portion where the terminal portion of the substrate is provided. 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 is opposed to the backup tool.

  When the substrate is positioned, the pressurizing tool having a heater disposed so as to be vertically movable is lowered above the backup tool, and a portion of the anisotropic conductive tape cut to a predetermined length is placed on the substrate. Apply by heating under pressure. That is, the anisotropic conductive tape is temporarily pressure-bonded to the upper surface of one side of the substrate. The above-mentioned TCP is temporarily pressure-bonded to the temporarily pressure-bonded anisotropic conductive tape and then finally pressure-bonded.

Patent Document 1 discloses an apparatus for winding an anisotropic conductive tape fed from a supply reel by a take-up reel, and cutting it to a predetermined length and sticking it to a substrate.
JP 2003-51517 A

  An anisotropic conductive tape has adhesiveness. Therefore, the anisotropic conductive tape is wound around the supply reel through the release tape which is formed of a fluororesin or the like and is difficult to stick the anisotropic conductive tape. Thereby, the anisotropic conductive tape can be reliably fed out from the supply reel.

  However, the anisotropic conductive tape may increase in adhesiveness due to deterioration over time, and in such a case, the release tape is strongly attached to the anisotropic conductive tape, so that the anisotropic conductive tape is smoothly fed out from the supply reel. I can't do that.

  Further, the anisotropic conductive tape is provided with a remaining amount detection tape attached to the anisotropic conductive tape to notify when the amount remaining on the supply reel reaches a predetermined length. ing. The remaining amount detection tape is colored in a different color from the anisotropic conductive tape and the release tape, and can be optically discriminated by the color.

  Since the portion of the anisotropic conductive tape provided with the remaining amount detection tape is thicker than the other portions, it is strongly wound around the core of the supply reel. That is, it is in a tightened state.

  If the winding is tight, the remaining amount detection tape may adhere to the anisotropic conductive tape, and even in that case, the anisotropic conductive tape may not be smoothly fed out from the supply reel. .

  For this reason, when the supply reel is driven to rotate in a state in which the anisotropic conductive tape is not smoothly fed out from the supply reel, the portion of the anisotropic conductive tape that has already been fed out from the supply reel It will be wound up on the supply reel that rotates in a short time. That is, a reverse winding phenomenon occurs in which the anisotropic conductive tape fed from the supply reel is wound around the supply reel again.

  When the anisotropic conductive tape is reversely wound, the anisotropic conductive tape cannot be fed out from the supply reel, and the apparatus must be stopped and inspected and repaired, resulting in a significant reduction in productivity. It will be.

  When the tape-like member wound on the supply reel is not smoothly fed out due to its increased adhesiveness, the present invention detects that before the reverse winding phenomenon occurs and reliably feeds out the tape-like member. An object of the present invention is to provide a supply device and a supply method for a tape-shaped member which can be performed.

This invention is a supply device for supplying a tape-like member having an anisotropic conductive tape adhered to a release tape ,
A supply reel wound with the tape-shaped member;
A take-up reel that winds up the tape-shaped member fed out from the supply reel;
Detecting means for detecting when the tape-shaped member is unwound when the tape-shaped member is unwound from the supply reel and the already-rolled portion is about to be wound around the supply reel;
There is provided a tape-like member supply device comprising pressure means for applying a tension for preventing the tape-like member from being wound around the supply reel on the basis of detection by the detection means.

  The detection means includes a rotating disk that is rotated in a predetermined direction by the tape-shaped member that is fed from the supply reel, and the tape-shaped member that is disposed to face the rotating disk is wound without being fed from the supply reel. It is preferable that this is constituted by a sensor that detects this from the rotation state of the rotating disk.

This invention is a supply method of supplying a tape-like member having an anisotropic conductive tape attached to a release tape ,
A step of winding the tape-shaped member fed from the supply reel by a take-up reel;
A step of previously fed-out portion not fed the tape-like member when unwinding the tape-like member from said supply reel to detect and Turkey wound on the supply reel,
And a step of applying a tension for preventing the tape-like member from being wound around the supply reel based on the detection.

  According to the present invention, before the reverse winding phenomenon occurs in which the tape-shaped member is wound around the supply reel without being fed out from the supply reel, this is detected and the reverse winding phenomenon is prevented from occurring. It is possible to provide a supply device and a supply method for a tape-shaped member that prevent the stoppage of the tape.

  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, a double-sided adhesive anisotropic conductive tape 2 cut to a length over the three terminal portions 1 as will be described later is shown in FIG. Is attached as shown in The anisotropic conductive tape 2 is made of a thermosetting resin mixed with metal particles. An electronic component 3 such as TCP is attached to each terminal portion 1 via an anisotropic conductive tape 2.

  As shown in FIG. 1, the anisotropic conductive tape 2 is attached to a release tape 8 that forms a tape-like member 4 with the anisotropic conductive tape 2, and is wound around a supply reel 9. Yes. The tape-like member 4 is fed out from the supply reel 9 with the anisotropic conductive tape 2 facing downward, guided by a pair of guide rollers 11, and taken up on a 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 pressurizing unit having a heater 13 a is provided so as to be vertically movable by a vertical drive mechanism 14. The anisotropic conductive tape 2 of the tape-like member 4 is cut into a predetermined length by a cutting unit 23 which will be described later, and a cut portion 2a having the predetermined length is positioned below the pressure tool 13 as described later. The

  When the cut portion 2a of the anisotropic conductive tape 2 is positioned, the pressure tool 13 is lowered, and the cut portion 2a of the anisotropic conductive tape 2 is provided with the terminal portion 1 on the side of the substrate W. Temporarily press-bonded to the part. Thereafter, the peeling tape 8 is peeled off from the anisotropic conductive tape 2 by a release roller (not shown), and only the peeling tape 8 is wound 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.

  Therefore, if the drive screw 22a is rotationally driven with the chuck 21 sandwiching the release tape 8, and the chuck 21 is driven in the direction indicated by the arrow X in FIG. 2 is extended in the X direction, and the cut portion 2 a can be positioned below the pressurizing tool 13.

  The supply reel 9 is rotationally driven by a feeding drive source 15 (shown in FIG. 4) to feed out the tape-like member 4, and the take-up reel 12 is rotationally driven by a take-up drive source 16 to release a peeling tape. 8 is wound up. The feeding drive source 15, the take-up drive source 16, and the feed drive source 22b are controlled by the control device 18 as will be described later.

  The anisotropic conductive tape 2 is cut to a predetermined length by the cutting unit 23 on the upstream side of the substrate W in the transport direction. The cutting unit 23 includes a cutter 24 and a peeling mechanism 25.

  The cutter 24 is disposed with its tip facing the lower side of the portion where the tape-like member 4 is fed from the supply reel 9 and travels horizontally, and can be driven in the vertical direction by a drive mechanism (not shown). The peeling mechanism 25 is disposed on the downstream side of the cutter member 24 in the running direction of the tape-like member 4 so as to face the lower side of the tape-like member 4.

  On the upper surface side of the tape-like member 4 to be conveyed, a holding block 26 is disposed so as to face the cutter 24 and the peeling mechanism 25. The holding block 26 is slidably provided with an extruding member 27 that presses the upper surface of the anisotropic conductive tape 2 through the peeling tape 8. The pushing member 27 is pressed at a predetermined timing by a cylinder (not shown).

  A peeling head 28 is disposed below the push-out member 27 so as to face the tape-like member 4. The peeling head 28 is attached to the base plate 29. The base plate 29 is provided with a supply reel 32 around which an adhesive tape 31 is wound. The adhesive tape 31 travels along the upper surface of the peeling head 28 and is wound around a take-up reel 33. Yes.

  The base plate 29 is driven up and down by a cylinder (not shown). When the base plate 29 is driven in the upward direction, the portion cut by the pair of cutting lines 2b of the anisotropic conductive tape 2 is pushed down by the pushing member 27. The cutting line 2b is formed when the cutter 24 is driven in the upward direction and abuts against a portion of the anisotropic conductive tape 2 facing the lower surface of the holding block 26. At that time, the release tape 8 is not cut.

  As a result, the portion 2 c of the anisotropic conductive tape 2 cut by the cutter 24 is pressed against the adhesive tape 31 of the peeling head 28, and the portion 2 c is peeled from the peeling tape 8. That is, the anisotropic conductive tape 2 has the predetermined length after the both ends of the predetermined length attached to the substrate W are cut by the cutter 24 and the cut portion 2c is removed by the peeling mechanism 25. The portion 2 a that has been cut and separated is stuck to the terminal portion 1 of the substrate W by the pressure tool 13.

  An air dancer 35 is provided between the supply reel 9 and the cutting unit 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 open, 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 pair of guide rollers 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 includes a plurality of, for example, first to fifth detection sensors 51 to 55 (shown in FIG. 4) that detect the amount of the tape-like member 4 that has been sucked and drawn into the dancer case 36. 36 are sequentially provided from the opening 36a side toward the closed end side at a predetermined interval.

  The detection signals of the first to fifth detection sensors 51 to 55 are respectively output to the control device 18, and the rotation speed of the supply reel 9 by the feeding drive source 15 is controlled based on the detection signal, and the supply reel 9 is controlled. The length by which the tape-like member 4 is fed out per unit time is controlled.

  Thereby, 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 amount of winding by the winding reel 12.

  As shown in FIGS. 2A and 2B, one of a pair of guide rollers 38a for guiding the tape-like member 4 is provided with a detecting means on a roller shaft 41 that rotatably supports the guide roller 38a. The rotating disk 42 which comprises is provided integrally. A plurality of through holes 43 are formed in the turntable 42 at equal intervals in the circumferential direction. A light projector 44 is provided on one side surface of the turntable 42, and a light receiver 45 is provided on the other side surface to face the light projector 44.

The light L output from the light projector 44 is detected by the light receiver 44 through a through hole 43 formed in the rotating disk 42, and the detection signal is input to the control device 18. When the rotating disk 42 is rotating at a constant speed when the tape-like member 4 is being fed by the feeding device 20, the light receiver 44 detects the light L output from the light projector 44. The period of the detection signal output to the control device 18 is constant. That is, if the tape-like member 4 is smoothly drawn out, a detection signal is input to the control device 18 from the light receiver 45 at a constant cycle.

However, when the tape-like member 4 is not smoothly fed out from the supply reel 9 as will be described later, the rotation speed of the rotating disk 42 changes, and the period of the detection signal detected by the light receiver 44 changes. As a result, the control device 18 detects that the rotation of the guide roller 38a has changed, that is, changes in the feed speed of the tape-like member 4, and outputs a detection signal to the control device 18. Yes.
In this embodiment, the light projector 44 and the light receiver 45 constitute a sensor that detects the reverse winding phenomenon of the tape-like member 4 from the rotation state of the rotating disk 42.

  Between the pair of guide rollers 38 a, for example, a solenoid 46 is provided as a pressurizing unit that applies tension in the direction of being fed from the supply reel 9 to the tape-like member 4. A pressure roller 48 is rotatably provided at the tip of the movable shaft 47 of the solenoid 46.

  When the rotational speed of the rotating plate 42 is changed and the light receiver 45 detects the change and the detection signal is output to the control device 18, a drive signal is output from the control device 18 to the solenoid 46, The movable shaft 47 is driven in the protruding direction by a drive signal. As a result, the tape-like member 4 is pressed by a pressure roller 48 provided at the tip of the movable shaft 47.

  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 predetermined length, and the anisotropic conductive tape 2 is cut and attached to the end of the substrate W held on the substrate stage 5.

The tape-like member 4 wound around the supply reel 9 is deteriorated with time to increase the adhesiveness of the anisotropic conductive tape 2 or is tightly wound by the remaining amount detection tape. The degree increases.

  When the degree of adhesion of the tape-like member 4 increases, an attached portion indicated by Z in FIG. 5A is generated, and even if the supply reel 9 is rotationally driven in the feeding direction indicated by an arrow in FIG. The shaped member 4 is not peeled off, and the attached portion Z moves in the rotation direction of the supply reel 9 as shown in FIG. Accordingly, the feeding direction of the tape-like member 4 also changes from the direction indicated by the chain line to the direction indicated by the solid line in FIG. That is, the tape-like member 4 is not fed out from the supply reel 9.

  As described above, when the tape-like member 4 is not drawn out from the supply reel 9, a portion of the tape-like member 4 that has already been drawn out and sucked into the dancer case 36 is drawn out by the rotation of the supply reel 9. There is a possibility that a reverse winding phenomenon occurs in which the reel 9 is wound again.

  However, if the tape-like member 4 is not fed out even though the supply reel 9 is driven to rotate in a state where the adhered portion Z is not peeled off, the tape-like member 4 is provided integrally with the guide roller 38a that guides the tape-like member 4. The rotation speed of the rotary plate 42 changes. In other words, after the rotation of the rotating disk 42 stops instantaneously, the rotation direction is reversed by starting to travel in the direction in which the tape-like member 4 that has already been drawn is wound.

  As described above, when the rotation speed (rotation direction) of the turntable 42 changes, the period of the light L detected by the light receiver 45 through the through hole 43 formed in the turntable 42 also changes. The light is output from the light receiver 45 to the control device 18. Thereby, the control device 18 outputs a drive signal to the solenoid 46.

  The solenoid 46 is driven in the direction in which the movable shaft 47 protrudes from the state shown by the solid line in FIG. 2A by the drive signal from the control device 18, and the pressure roller 48 provided at the tip thereof. Thus, the portion of the tape-like member 4 that has been fed out from the supply reel 9 is pressurized.

  As a result, the tape-like member 4 is displaced from the state shown by the solid line in the figure as shown by the chain line, so that a tension corresponding to the amount of displacement is generated, and the tension shown in FIGS. The attached portion Z displaced to the position shown in FIG.

  If the adhered portion Z is peeled off, the tape-like member 4 is smoothly fed out from the supply reel 9, so that the portion already drawn out from the supply reel 9 of the tape-like member 4 is again wound around the supply reel 9. This prevents the reverse winding phenomenon from occurring. That is, since the feeding failure of the tape-like member 4 is prevented, the sticking device is not stopped due to the feeding failure so that the inspection and repair are not caused.

  In the above embodiment, a solenoid is used as the reverse winding preventing means. However, instead of the solenoid, for example, a cylinder may be used. In short, if a failure occurs in feeding out the tape-like member 4, it is detected. Any material that can immediately apply tension to the tape-shaped member may be used.

  In addition, whether or not the reverse winding phenomenon has occurred in the tape-like member fed out from the supply reel is detected by a sensor composed of a light projector and a light receiver that are arranged with a through-hole provided with a through hole. As a sensor, a light projecting / receiving device in which a light projecting device and a light receiving device are integrated is used. On one side surface of the rotating disk, a stripe pattern that reflects light is provided at predetermined intervals along the circumferential direction of the rotating disk. And you may make it detect whether the reverse winding phenomenon arose in the tape-shaped member with the period which a light projector / receiver detects the striped pattern.

The schematic block diagram of the sticking apparatus of the tape-shaped member which shows one embodiment of this invention. (A) is an enlarged view of the part of the solenoid which gives tension | tensile_strength to the tape-shaped member of a sticking apparatus, (b) is a side view which shows the light projector and light receiver which are arrange | positioned on both sides of a rotary disk. (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. Explanatory drawing of the sticking part of the tape-shaped member which arose on the supply reel.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 4 ... Tape-shaped member, 9 ... Supply reel, 12 ... Take-up reel, 18 ... Control apparatus, 44 ... Light projector (detection means), 45 ... Light receiver (detection means), 46 ... Solenoid (pressurization means).

Claims (3)

A supply device for supplying a tape-like member having an anisotropic conductive tape adhered to a release tape ,
A supply reel wound with the tape-shaped member;
A take-up reel that winds up the tape-shaped member fed out from the supply reel;
Detecting means for detecting when the tape-shaped member is unwound when the tape-shaped member is unwound from the supply reel and the already-rolled portion is about to be wound around the supply reel;
A tape-shaped member supply device comprising: a pressure means for applying a tension for preventing the tape-shaped member from being wound around the supply reel based on detection by the detection means.   The detection means includes a rotating disk that is rotated in a predetermined direction by the tape-shaped member that is fed from the supply reel, and the tape-shaped member that is disposed to face the rotating disk is wound without being fed from the supply reel. 2. A tape-shaped member supply device according to claim 1, wherein said tape-shaped member supply device comprises a sensor for detecting this from the rotation state of said rotating disk. A supply method for supplying a tape-like member having an anisotropic conductive tape attached to a release tape ,
A step of winding the tape-shaped member fed from the supply reel by a take-up reel;
A step of previously fed-out portion not fed the tape-like member when unwinding the tape-like member from said supply reel to detect and Turkey wound on the supply reel,
Applying a tension for preventing the tape-shaped member from being wound around the supply reel based on the detection. A method for supplying a tape-shaped member.

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