JP5008964B2 - ACF tape bonding apparatus, ACF tape bonding apparatus, and ACF tape bonding method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a present ACF tape to be precisely stuck to a next ACF tape even if the tape widths of the present tape and the next tape are thin. <P>SOLUTION: The ACF tape-sticking device 10 sticks the present ACF tape 1a comprising an adhesive film 2a, 2b and release paper 3a, 3b, with the next ACF tape 1b. The ACF tape-sticking device 10 is equipped with an ACF tape-supporting part 15 for supporting the overlapped present ACF tape 1a and next ACF tape 1b, and a welding device 5 for sticking the overlapped part of the present ACF tape 1a and the next ACF tape 1b arranged so as to face to the ACF tape-supporting part 15 by pressing the overlapped part by a pressing part 14 and sticking them by ultrasonic vibration. The tip face 14a of the pressing part 14 of the welding device 5 is subjected to knurling processing to form a plurality of protruded parts 19. Each of the protruded parts 19 has a flat face 19f and an edge 19r surrounding the flat face 19f. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to an ACF tape joining apparatus, an ACF tape adhering apparatus, and an ACF tape joining method capable of reliably joining a current ACF tape and a next ACF tape.

  As shown in FIG. 7, conventionally, the ACF tape joining apparatus 10 for joining the current ACF tape 1a composed of the adhesive film 2a and the release paper 3a and the next ACF tape 1b composed of the adhesive film 2b and the release paper 3b is overlapped. An anvil (ACF tape support portion) 15 that supports the current ACF tape 1a and the next ACF tape 1b, and an anvil 15 that is disposed opposite to the anvil 15, the overlapping portion of the current ACF tape 1a and the next ACF tape 1b is replaced with a horn ( And a welding device 5 that is pressed by a pressing portion 14 and bonded by ultrasonic vibration. Here, the front end surface 14a of the horn 14 is a flat surface.

  When the present ACF tape 1a and the next ACF tape 1b are joined using such an ACF tape joining apparatus 10, the release paper 3b of the next ACF tape 1b is pressed against the adhesive film 2a of the current ACF tape 1a. Next, the release paper 3b of the ACF tape 1b and the adhesive film 2a of the current ACF tape 1a are vibrated ultrasonically (see FIG. 8). As a result, frictional heat is generated between the adhesive film 2a of the current ACF tape 1a and the release paper 3b of the next ACF tape 1b, and the adhesive film 2a of the current ACF tape 1a is melted to release the release paper 3b of the next ACF tape 1b. Adhere to.

  However, in such a conventional ACF tape joining apparatus 10, the vibration energy of ultrasonic vibration is most efficiently applied at the edge 14r of the tip of the horn 14, so that the current ACF tape 1a and the next ACF tape 1b are substantially Above, it is joined only at a location corresponding to the edge 14r. For this reason, the current ACF tape 1a and the next ACF tape 1b are not sufficiently joined. In particular, when the current ACF tape 1a having a narrow tape width and the next ACF tape 1b are joined, the current ACF tape 1a and the next ACF tape 1b. The tape 1b may not be reliably joined.

  The present invention has been made in consideration of such points, and even when the width of the current ACF tape and the next ACF tape is narrow, the present ACF tape can reliably join the next ACF tape to the next ACF tape. A joining device, an ACF tape sticking device, and an ACF tape joining method can be provided.

The present invention relates to an ACF tape joining apparatus for joining a current ACF tape composed of an adhesive film and a release paper to the next ACF tape,
An ACF tape support that supports the overlapped current ACF tape and next ACF tape;
A welding device that is disposed to face the ACF tape support portion, and that joins the current ACF tape and the next overlapped portion of the ACF tape by pressing the pressing portion and ultrasonically oscillating;
A knurling process is performed on the tip surface of the pressing portion to form a plurality of protrusions,
Each protrusion has a flat surface and an edge surrounding the flat surface.

  With such a configuration, even if the tape width of the current ACF tape and the next ACF tape is narrow, the current ACF tape and the next ACF tape can be reliably joined.

  The present invention is the ACF tape bonding apparatus characterized in that the protrusions are arranged in a wavy shape on the front end surface of the pressing part.

  With such a configuration, the next ACF tape can be bonded more uniformly to the current ACF tape.

  The present invention is the ACF tape bonding apparatus characterized in that the arrangement pitch of the protrusions is 0.5 to 1.0 mm.

  With such a configuration, the frictional heat generated by ultrasonic vibration between the current ACF tape and the next ACF tape can be increased, and the molten residue generated during welding is prevented from clogging between the protrusions. can do.

The present invention has a cylinder in which the welding apparatus drives the pressing portion toward the ACF tape support portion,
The cylinder is connected to a pneumatic circuit that drives the pressing portion toward the ACF tape support portion by increasing the internal pressure of the cylinder.
The air pressure circuit is provided with a pressure reducing valve for reducing the internal pressure of the air pressure circuit.

  With such a configuration, when the current ACF tape and the next ACF tape having a tape width of 1.2 mm or less are used, the internal pressure of the pneumatic circuit is reduced and appropriately adjusted by the pressure reducing valve provided in the pneumatic circuit. Can do. For this reason, the pressure applied to the current ACF tape and the next ACF tape can be reduced, and the adhesive film of the current ACF tape can be prevented from being excessively melted.

  The present invention is an ACF tape joining apparatus characterized in that the ACF tape support part sucks and holds the current ACF tape and the next ACF tape.

  The present invention is an ACF tape bonding apparatus characterized in that a cutting portion for cutting a current ACF tape at a desired position is provided upstream of the ACF tape support portion.

The present invention includes a substrate stage for supporting a substrate,
An ACF tape supply unit that is arranged on the upstream side of the substrate stage and sequentially supplies a current ACF tape and a next ACF tape made of an adhesive film and a release paper;
The ACF tape bonding apparatus disposed between the substrate stage and the ACF tape supply unit;
A pressure unit that is disposed facing the substrate stage and presses the release paper of the current ACF tape supplied on the substrate, and presses the adhesive film to the substrate;
An ACF tape take-up unit that is arranged on the downstream side of the substrate stage and winds the release paper of the current ACF tape;
It is an ACF tape sticking apparatus characterized by comprising.

  With such a configuration, even if the tape width of the current ACF tape and the next ACF tape is narrow, the current ACF tape and the next ACF tape can be reliably joined.

The present invention provides a current ACF tape supply step of supplying the current ACF tape by the ACF tape supply unit;
A cutting step of cutting the current ACF tape at a desired position by a cutting portion provided on the upstream side of the ACF tape support portion;
The next ACF tape supply process for supplying the next ACF tape by the ACF tape supply unit;
A joining step of joining the current ACF tape and the next ACF tape by the ACF tape joining apparatus disposed between the substrate stage and the ACF tape supply unit;
An ACF tape joining method characterized by comprising:

  With such a configuration, even if the tape width of the current ACF tape and the next ACF tape is narrow, the current ACF tape and the next ACF tape can be reliably joined.

  According to the present invention, the tip surface of the pressing portion of the welding apparatus is knurled to form a plurality of protrusions, and each protrusion has a flat surface and an edge surrounding the flat surface. Therefore, even if the tape width of the current ACF tape and the next ACF tape is narrow, the current ACF tape and the next ACF tape can be reliably joined.

First Embodiment Hereinafter, an ACF tape bonding apparatus, an ACF tape bonding apparatus, an ACF tape bonding method, and an ACF tape bonding method according to a first embodiment of the present invention will be described with reference to the drawings. Here, FIG. 1 to FIG. 5 are diagrams showing a first embodiment of the present invention.

  As shown in FIG. 1, an ACF tape adhering apparatus 50 is disposed on the upstream side of a substrate stage 51 that supports a substrate 60 and the substrate stage 51, and is currently an ACF tape 1a that includes an adhesive film 2a and a release paper 3a. And an ACF tape supply unit 20 for sequentially supplying the next ACF tape 1b composed of the adhesive film 2b and the release paper 3b, and an ACF tape bonding apparatus 10 disposed between the substrate stage 51 and the ACF tape supply unit 20. ing. In the present application, “upstream” means upstream of the flow of the current ACF tape 1a and the next ACF tape 1a.

  Further, as shown in FIG. 1, a pressing unit 53 that presses the release paper 3 a of the current ACF tape 1 a supplied onto the substrate 60 and presses the adhesive film 2 a against the substrate 60, facing the substrate stage 51. Has been placed. Further, an ACF tape winding unit 30 that winds the release paper 3a of the ACF tape 1a is disposed downstream of the substrate stage 51.

  By the way, the current ACF tape 1a means an ACF tape whose pressure-sensitive adhesive film 2a is pressure-bonded (or already pressure-bonded) to the substrate 60 by the pressurizing unit 53, and the next ACF tape 1b is the current ACF tape 1b. This means an ACF tape in which the adhesive film 2b is pressure-bonded to the substrate 60 by the pressurizing unit 53 after the ACF tape 1a.

  Among them, the ACF tape joining apparatus 10 is opposed to the anvil 15 and the anvil (ACF tape support portion) 15 for supporting the overlapped current ACF tape 1a and the next ACF tape 1b as shown in FIGS. The portion where the current ACF tape 1a and the next ACF tape 1b overlap (the end of the current ACF tape 1a and the start of the next ACF tape 1b) is pressed against the anvil 15 by the horn (pressing portion) 14. And a cutting cutter (cutting part) 12 that cuts the current ACF tape 1a disposed on the upstream side of the welding device 5 at a desired position.

  As shown in FIG. 2, the welding apparatus 5 is connected to a horn 14, and an ultrasonic welder 13 that ultrasonically vibrates the horn 14 in a direction toward the anvil 15 (arrow direction in FIG. 4D), and an ultrasonic wave. The cylinder 16 is connected to the welder 13 and drives the horn 14 and the ultrasonic welder 13 toward the anvil 15 (in the direction of the arrow in FIG. 4C).

  Further, as shown in FIGS. 1 and 2, the anvil 15 is provided with an opening groove 11, and a cutting cutter 12 can be inserted into the opening groove 11 (see FIG. 4B).

  Further, as shown in FIGS. 2 and 3A and 3B, the tip surface 14a of the horn 14 of the welding apparatus 5 is knurled to form a plurality of protrusions 19. As shown in FIGS. 3A and 3B, each of the protrusions 19 has a flat surface 19f and an edge 19r surrounding the flat surface 19f. Further, as shown in FIG. 3A, the flat surface 19f of the protrusion 19 has a square cross section. In addition, as shown in FIG.3 (b), in this Embodiment, the one side of the said square is 0.25 mm.

  Further, as shown in FIGS. 3A and 3B, the projecting portion 19 is arranged on the front end surface 14 a of the horn 14 in an irregular shape. Moreover, as shown in FIG.3 (b), in this Embodiment, the arrangement | positioning pitch of the protrusion 19 is 0.75 mm. For reference, FIG. 3A shows an ACF tape 1 having a tape width of 2.0 mm, 1.5 mm, and 1.2 mm.

  Further, the anvil 15 has a suction hole (not shown) for sucking and holding the current ACF tape 1a and the next ACF tape 1b. The suction hole allows the current ACF tape 1a and the next ACF tape 1b to be connected to each other. Is adsorbed and held (see FIG. 2).

  Further, as shown in FIGS. 1A and 1B, on the upstream side of the substrate stage 51 (the left side of FIGS. 1A and 1B), a half cutter 41 that cuts the adhesive film 2a of the current ACF tape 1a. And an adhesive film partial peeling portion 40 having a peeling head 42 for peeling the adhesive film 2a cut by the half cutter 41. Then, the adhesive film 2a of the ACF tape 1a is partially cut and peeled by the adhesive film partial peeling portion 40.

  Further, as shown in FIGS. 1A and 1B, above the half cutter 41 and the peeling head 42, when the adhesive film 2a of the ACF tape 1a is currently cut by the half cutter 41 and when the peeling head 42 An adsorbing block 45 that currently adsorbs and holds the ACF tape 1a from above when peeling the adhesive film 2a cut by the cutter 41 is provided.

  Further, as shown in FIGS. 1A and 1B, the used current ACF tape (release paper 3a) is placed by the clamper 46a on the downstream side of the substrate stage 51 (on the right side of FIGS. 1A and 1B). A drawer unit 46 is provided that pulls the current ACF tape 1a having a predetermined length onto the substrate 60 by moving to the downstream side (the right side of FIGS. 1A and 1B) while gripping.

  Further, as shown in FIGS. 1A and 1B, between the ACF tape joining apparatus 10 and the half cutter 41, a supply-side movable roller 25 that is movable up and down along the guide 23, and an ACF tape. A supply-side fixed roller 29 that supplies the current ACF tape 1a from the supply unit 20 to the return supply-side movable roller 25 and a supply-side fixed roller 26 that receives the current ACF tape 1a from the supply-side movable roller 25 are disposed. . Similarly, between the drawing unit 46 and the ACF tape winding unit 30, the winding side fixing roller 36 and the release paper 3 a from the winding side fixing roller 36 are received and along the guide 33. A winding-side movable roller 35 that is movable in the vertical direction is disposed.

  Note that a weight (not shown) is connected to the supply side movable roller 25 via a support roller (not shown). For this reason, an upward pulling force is applied to the supply side movable roller 25 by the weight. Similarly, a weight (not shown) is connected to the winding side movable roller 35 via a support roller (not shown). For this reason, an upward pulling force is also applied to the winding side movable roller 35 by the weight.

  Further, as shown in FIGS. 1A and 1B, a clamp mechanism 39 that holds the used ACF tape (release paper 3a) between the winding side fixed roller 36 and the winding side movable roller 35. Is provided.

  Further, as shown in FIGS. 1A and 1B, the ACF tape supply unit 20 rotates and drives the supply reel 22 that winds and holds the current ACF tape 1a and the next ACF tape 1b, and the supply reel 22. And a supply motor 21. The ACF tape take-up unit 30 includes a take-up reel 32 that takes up and holds a used current ACF tape (release paper 3a), and a take-up motor 31 that rotates the take-up reel 32. Yes.

  Next, the operation of the present embodiment having such a configuration will be described.

  First, the operation of the ACF tape adhering device 50 that presses the adhesive film 2a of the ACF tape 1a to the substrate 60 will be described.

  First, the substrate 60 is supported by the substrate stage 51 (substrate support step 81) (see FIGS. 1A and 1B and FIG. 5).

  Next, the used current ACF tape (release paper 3a) is clamped by the clamp mechanism 39 (see FIG. 1A).

  Next, the current ACF tape 1a composed of the release paper 3a and the adhesive film 2a is supplied by the ACF tape supply unit 20 arranged on the upstream side of the substrate stage 51 (ACF tape supply step 83) (FIG. 1A ) And FIG. Specifically, the supply motor 21 of the ACF tape supply unit 20 rotates the supply reel 22 in the direction of the arrow in FIG. 1A, and the current ACF tape 1a is unwound from the supply reel 22.

  Therefore, the current ACF tape 1a is slackened, and the supply-side movable roller 25 is lifted by the action of the weight connected to the supply-side movable roller 25 (see FIG. 1A). When the supply-side movable roller 25 rises and reaches the upper limit position, the rotation drive of the supply motor 21 stops.

  At this time, the used current ACF tape (the adhesive film 2a of the current ACF tape 1a is already pressure-bonded to the substrate 60 by the pressurizing unit 53 by the ACF tape winding unit 30 disposed on the downstream side of the substrate stage 51 ( The release paper 3a) is wound up (ACF tape winding step 93b) (see FIGS. 1A and 5).

  That is, the take-up motor 31 of the ACF tape take-up unit 30 rotates the take-up reel 32 in the direction of the arrow in FIG. 1A, and the current ACF tape (release paper 3a) used for the take-up reel 32 Is wound up. For this reason, the distance between the used current ACF tape (release paper 3a) and the clamp mechanism 39 is shortened, and the winding-side movable roller 35 is connected to the winding-side movable roller 35 with a weight (not shown). It descends against the tensile force applied upward by the action (see FIG. 1A). In addition, when the winding side movable roller 35 descends and reaches the lower limit position, the rotational driving of the winding motor 31 is stopped.

  Next, the clamp mechanism 39 releases the clamp of the used ACF tape (release paper 3a) (see FIG. 1B).

  Next, the used current ACF tape (release paper 3a) is gripped by the clamper 46a of the drawer unit 46 disposed between the ACF tape supply unit 20 and the ACF tape take-up unit 30, and the downstream side from the upstream side. (ACF tape drawing process 85) (see FIGS. 1A, 1B, and 5).

  As described above, when the current ACF tape 1a is pulled out onto the substrate 60 by the drawing unit 46, when the predetermined position of the current ACF tape 1a reaches above the half cutter 41, the adhesive film 2a of the current ACF tape 1a is reached by the half cutter 41. Is cut (half-cut step 87) (see FIG. 1B and FIG. 5). Thereafter, when the location where the adhesive film 2a is cut by the half cutter 41 of the ACF tape 1a reaches above the peeling head 42, the adhesive film 2a at the location is peeled off by the peeling head 42 (adhesive film). Peeling step 88) (see FIG. 1B and FIG. 5). As described above, when the adhesive film 2a of the current ACF tape 1a is cut by the half cutter 41 or peeled by the peeling head 42, the suction block 45 is operated each time, and the current ACF tape 1a is sucked by the suction block 45. Retained.

  As described above, since the ACF tape 1a currently moves from the upstream side to the downstream side, the supply side movable roller 25 of the ACF tape supply unit 20 is moved upward by the weight connected to the supply side movable roller 25. It descends against the applied pulling force (see FIG. 1B).

  At this time, since the used current ACF tape (release paper 3a) is slackened, the winding-side movable roller 35 is raised by the weight connected to the winding-side movable roller 35 (FIG. 1B). reference).

  Next, the pressurizing unit 53 descends, presses the release paper 3a of the current ACF tape 1a, and crimps the adhesive film 2a of the current ACF tape 1a to the substrate 60 supported by the substrate stage 51 (crimping step 91). (See FIGS. 1 (a) and 1 (b) and FIG. 5).

  Next, the used current ACF tape (release paper 3a) is taken up by the ACF tape take-up unit 30 arranged on the downstream side of the substrate stage 51 (ACF tape take-up step 93) (FIG. 1 (a) and (See FIG. 5).

  At this time, the supply motor 21 of the ACF tape supply unit 20 drives the supply reel 22 to rotate in the direction of the arrow in FIG. Unwinding (ACF tape supply step 83a) (see FIG. 1A and FIG. 5). Therefore, the current ACF tape 1a is slackened, and the supply-side movable roller 25 is lifted by the action of a weight (not shown) connected to the supply-side movable roller 25 (see FIG. 1 (a)).

  Thereafter, the above-described steps are repeatedly performed.

  As described above, when the process of pressing the current ACF tape 1a to the substrate 60 is repeated, the current ACF tape 1a for pressing the substrate 60 is lost. Thus, when the current ACF tape 1a is lost, it is necessary to join a new ACF tape (next ACF tape 1b) to the current ACF tape 1a. Thus, the next time the ACF tape 1b is bonded to the current ACF tape 1a, the ACF tape bonding apparatus 10 of the ACF tape adhering apparatus 50 is used as described below.

  Hereinafter, a method for joining the ACF tape 1b to the current ACF tape 1a next time will be described.

  First, the cutting cutter 12 provided on the upstream side of the anvil 15 cuts the current ACF tape 1a at a desired position (cutting step) (see FIGS. 4A and 4B).

  Next, the ACF tape supply unit 20 supplies the next ACF tape 1b (next ACF tape supply step) (see FIGS. 1A, 1B, and 4C).

  Next, the current ACF tape 1a and the next ACF tape 1b are joined by the ACF tape joining apparatus 10 disposed between the substrate stage 51 and the ACF tape supply unit 20 (joining step) (FIG. 1A). (See (b) and FIG. 4 (d)).

  Specifically, first, the cylinder 16 moves the ultrasonic welder 13 and the horn 14 connected to the ultrasonic welder 13 toward the anvil 15, and the tip surface 14a of the horn 14 is moved to the next ACF tape 1b. The release paper 3b is pressed. As a result, the release paper 3b of the next ACF tape 1b is pressed against the adhesive film 2a of the current ACF tape 1a (see FIG. 2 and FIG. 4D).

  Next, the horn 14 is ultrasonically vibrated by the ultrasonic welder 13. As a result, the adhesive film 2a of the current ACF tape 1a and the release paper 3b of the next ACF tape 1b are ultrasonically vibrated, and friction is generated between the adhesive film 2a of the current ACF tape 1a and the release paper 3b of the next ACF tape 1b. As heat is generated, the adhesive film 2a of the ACF tape 1a is melted and bonded to the release paper 3b of the ACF tape 1b next time.

  At this time, as shown in FIGS. 3A and 3B, the tip surface 14 a of the horn 14 is knurled to form a plurality of protrusions 19. Each of the protrusions 19 has a flat surface 19f and an edge 19r surrounding the flat surface 19f.

  In this way, by providing the plurality of protrusions 19 on the tip surface 14a of the horn 14, the surface area occupied by the edge 19r that generates large frictional heat due to ultrasonic vibration is larger than the surface area of the tip surface 14a of the horn 14. The ratio can be increased. For this reason, the next ACF tape 1b and the present ACF tape 1a can be reliably joined.

  Further, as shown in FIGS. 3A and 3B, a plurality of protrusions 19 are provided on the tip surface 14 a of the horn 14. For this reason, even if the tape width of the current ACF tape 1a and the next ACF tape 1b to be joined is narrow, the adhesive film 2a of the current ACF tape 1a is melted by the edges 19r of the plurality of protrusions 19, and the next ACF tape 1b The release paper 3b can be adhered. As a result, even the narrow current ACF tape 1a and the next ACF tape 1b can be reliably joined.

  Here, in order to increase the frictional heat generated by the ultrasonic vibration between the adhesive film 2a of the current ACF tape 1a and the release paper 3b of the next ACF tape 1b, the arrangement pitch of the protrusions 19 is 1.0 mm. It is preferable that it is smaller. On the other hand, when the arrangement pitch of the protrusions 19 becomes too small and becomes smaller than 0.5 mm, the melted residue generated when the adhesive film 2a of the current ACF tape 1a is welded to the release paper 3b of the ACF tape 1b next time, It becomes easy to clog between the protrusions 19, and cleaning becomes difficult. For this reason, it is preferable that the arrangement pitch of the protrusions 19 is 0.5 to 1.0 mm.

  In the present embodiment, as shown in FIG. 3B, the arrangement pitch of the protrusions 19 is 0.75 mm. For this reason, the frictional heat generated by the ultrasonic vibration between the adhesive film 2a of the current ACF tape 1a and the release paper 3b of the next ACF tape 1b can be increased, and the melted residue generated during welding is projected. 19 can be prevented from clogging.

  Further, as shown in FIGS. 3 (a) and 3 (b), since the protrusion 19 is arranged in a wavy shape on the front end surface 14a of the horn 14, the next ACF tape 1b is more uniform than the current ACF tape 1a. Can be welded to.

  Further, the protrusion 19 having a flat surface 19f having a square cross section can be generated by simply inserting a straight groove into the tip surface 14a of the flat horn 14 like a grid. For this reason, the protrusion 19 having the flat surface 19f having a square cross section can be easily generated.

  Although not shown, a protrusion having a flat surface having a rhombic cross section can also be generated by simply inserting a groove in the front end surface 14a of the flat horn 14 in a straight line. For this reason, the protrusion which has a flat surface which a cross section becomes a rhombus can also be produced | generated easily.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG. In the second embodiment shown in FIG. 6, the pneumatic circuit 6 that drives the horn 14 toward the anvil 15 by increasing the internal pressure of the cylinder 16 is connected to the cylinder 16. The pneumatic circuit 6 is provided with a pressure reducing valve 17 that reduces the internal pressure of the pneumatic circuit 6. The pneumatic circuit 6 is connected to a compressor 8 and a silencer 7 via an electromagnetic valve 9. Other configurations are substantially the same as those of the first embodiment shown in FIGS.

  In the second embodiment shown in FIG. 6, the same parts as those in the first embodiment shown in FIGS. 1 to 5 are denoted by the same reference numerals, and detailed description thereof is omitted.

  When the tape width of the current ACF tape 1a and the next ACF tape 1b to be joined is 1.2 mm or less, the pressure applied from the horn 14 to the current ACF tape 1a and the next ACF tape 1b becomes too large, and the current ACF tape The adhesive film 2a of 1a may melt too much (see FIG. 2).

  In the present embodiment, when the current ACF tape 1a and the next ACF tape 1b having a tape width of 1.2 mm or less are joined, the internal pressure of the pneumatic circuit 6 is reduced by the pressure reducing valve 17 provided in the pneumatic circuit 6. The pressure can be reduced and adjusted appropriately. For this reason, the pressure applied to the current ACF tape 1a and the next ACF tape 1b can be reduced, and the adhesive film 2a of the current ACF tape 1a can be prevented from being excessively melted.

  The pressure reducing valve 17 may be connected to a control unit (not shown) that controls the pressure reducing valve 17 and reduce the internal pressure of the pneumatic circuit 6 based on a signal from the control unit. In this way, the pressure reducing valve 17 is controlled by the control unit, so that the pressure reducing valve 17 can quickly and surely operate the pneumatic circuit according to the tape width and type of the ACF tape (current ACF tape 1a and next ACF tape 1b). The internal pressure of 6 can be adjusted.

The side view which shows the ACF tape sticking apparatus by the 1st Embodiment of this invention. The side view which shows the ACF tape joining apparatus by the 1st Embodiment of this invention. The enlarged view which shows the front-end | tip of the ACF tape joining apparatus by the 1st Embodiment of this invention. The side view explaining the ACF tape joining method by the 1st Embodiment of this invention. The flowchart which shows the ACF tape sticking method by the 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows the ACF tape joining apparatus by the 1st Embodiment of this invention. The side view which shows the conventional ACF tape joining apparatus. Side sectional drawing which shows a mode that the present ACF tape and the next ACF tape are joined by the conventional ACF tape joining apparatus.

Explanation of symbols

1a Present ACF tape 1b Next ACF tape 2a, 2b Adhesive film 3a, 3b Release paper 5 Welding device 6 Pneumatic circuit 10 ACF tape joining device 11 Opening groove 12 Cutting cutter (cutting part)
13 Ultrasonic welder 14 Horn (pressing part)
14a End face 15 of horn 15 Anvil (ACF tape support part)
16 Cylinder 17 Pressure reducing valve 19 Protruding part 19f Flat surface 19r Edge 20 ACF tape supply part 30 ACF tape winding part 39 Clamp mechanism 40 Adhesive film partial peeling part 41 Half cutter 42 Peeling head 46 Drawer unit 46a Clamper 50 ACF tape sticking Apparatus 51 Substrate stage 53 Pressurizing unit 60 Substrate 81 Substrate support step 83, 83a ACF tape supply step 85 ACF tape drawing step 87 Half cut step 88 Adhesive film peeling step 91 Pressure bonding step 93, 93b ACF tape winding step

Claims (8)

In the ACF tape joining device that joins the current ACF tape consisting of an adhesive film and release paper to the next ACF tape,
An ACF tape support that supports the overlapped current ACF tape and next ACF tape;
A welding device that is disposed to face the ACF tape support portion, and that joins the current ACF tape and the next overlapped portion of the ACF tape by pressing the pressing portion and ultrasonically oscillating;
A knurling process is performed on the tip surface of the pressing portion to form a plurality of protrusions,
Each protrusion has a flat surface and an edge surrounding the flat surface.   2. The ACF tape bonding apparatus according to claim 1, wherein the protrusion is arranged in a wavy shape on the front end surface of the pressing portion.   2. The ACF tape bonding apparatus according to claim 1, wherein the arrangement pitch of the protrusions is 0.5 to 1.0 mm. The welding apparatus has a cylinder that drives the pressing portion toward the ACF tape support portion,
The cylinder is connected to a pneumatic circuit that drives the pressing portion toward the ACF tape support portion by increasing the internal pressure of the cylinder.
2. The ACF tape joining apparatus according to claim 1, wherein the air pressure circuit is provided with a pressure reducing valve for reducing the internal pressure of the air pressure circuit.   2. The ACF tape bonding apparatus according to claim 1, wherein the ACF tape support part sucks and holds the current ACF tape and the next ACF tape.   2. The ACF tape joining apparatus according to claim 1, wherein a cutting section for cutting the current ACF tape at a desired position is provided upstream of the ACF tape support section. A substrate stage for supporting the substrate;
An ACF tape supply unit that is arranged on the upstream side of the substrate stage and sequentially supplies a current ACF tape and a next ACF tape made of an adhesive film and a release paper;
The ACF tape bonding apparatus according to claim 1 disposed between the substrate stage and the ACF tape supply unit;
A pressure unit that is disposed facing the substrate stage and presses the release paper of the current ACF tape supplied on the substrate, and presses the adhesive film to the substrate;
An ACF tape take-up unit that is arranged on the downstream side of the substrate stage and winds the release paper of the current ACF tape;
An ACF tape sticking device comprising: The current ACF tape supply process for supplying the current ACF tape by the ACF tape supply unit
A cutting step of cutting the current ACF tape at a desired position by a cutting portion provided on the upstream side of the ACF tape support portion;
The next ACF tape supply process for supplying the next ACF tape by the ACF tape supply unit;
A joining step of joining the current ACF tape and the next ACF tape by the ACF tape joining apparatus according to claim 1 disposed between the substrate stage and the ACF tape supply unit;
An ACF tape joining method comprising:

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