JP5074453B2 - Crimping device and replacement method of protective sheet - Google Patents

Description

  In the present invention, a semiconductor component including a driver IC circuit is electrically connected to a display panel such as a liquid crystal panel, a plasma display panel, or an organic EL panel, and a printed circuit board using an anisotropic conductive film (ACF). The present invention relates to a crimping device used when connecting to a cable.

  Conventionally, a technology for crimping electronic components such as TCP (Tape Carrier Package) on a liquid crystal panel (LCD) using ACF, and a technology for crimping a semiconductor component with a driver IC mounted on TAB (Tape Automated Bonding) to a display panel , Electronic components such as TCP, FPC (Flexible Printed Circuit), COG (Chip On Glass), etc. are crimped and mounted on the flat display panel, and the TCP or FPC mounted on the panel is crimped on the printed circuit board. A technique for mounting a printed circuit board is known (for example, see Patent Documents 1 to 3).

JP-A-8-184847 JP 2006-287011 A JP 2008-91804 A

  The procedure of crimping will be described with reference to the schematic diagram of the crimping apparatus shown in FIG. First, a substrate 101 such as a display panel having a semiconductor component attached to a connection terminal region for electrically connecting a semiconductor component and a display via an ACF is placed on a sample table (not shown), and the connection terminal region Is placed on the lower blade 105 of the crimping apparatus.

  A protective sheet 100 and an upper blade 102 are disposed above the lower blade 105. The lower blade 105 is heated to 80 to 120 ° C. by the heater block 106, and the upper blade 102 is heated to 250 to 500 ° C. by the heater block 103. The heater blocks 103 and 106 are covered with a heat insulating material 104 except for a predetermined area.

  Next, the upper blade 102 is lowered, and the ACF in the connection terminal region is heated and pressed through the protective sheet 100. Here, only one upper blade 102 is described, but a plurality of upper blades 102 may be provided depending on the arrangement state of the connection terminals. For example, as shown in FIG. 9, when there are six crimping locations 161 on the substrate 101, six upper blades can be provided. Reference numeral 162 denotes a display unit. Next, after pressing for a predetermined time, the upper blade 102 is raised, and the substrate 101 is removed from the lower blade 105.

  Since the protective sheet 100 is deteriorated by heating and pressure bonding, the protective sheet is used so that an unused portion is placed between the upper blade 102 and the lower blade 105 by the feed roller 123, the take-up roller 124, and the roller 125 after being used several times. 100 is moved in the direction of the trash can 131. The number of times the protective sheet is used at the same location is specified by confirming in advance the number of thermocompression bonding and the state of deterioration of the protective sheet. The unused new part of the protective sheet 100 is supplied from a protective sheet supply unit 120 (for example, a reel) before the next substrate is prepared.

  Conventionally, when this protective sheet 100 is used up and a new protective sheet cannot be supplied, the preparation of the next board is stopped, and the old reel with the protective sheet removed and the new reel with the protective sheet wound are replaced. Then, the protective sheet 100 is set by manually drawing between the plurality of rollers 123, 124, and 125 according to the feed path. For this reason, the work is troublesome and time is required for replacement. In particular, there was almost no maintenance area for replacing the protective sheet, and there was a problem that workability was low.

  However, the above-mentioned patent document does not describe anything about the above problem.

  An object of the present invention is to electrically connect a display panel substrate and a semiconductor component by crimping an ACF and to connect a semiconductor component mounted on a printed circuit board to the display panel substrate via an ACF. Another object of the present invention is to provide a pressure bonding apparatus and a method for replacing a protective sheet, which can easily replace the protective sheet used for connection.

  As one embodiment for achieving the above object, a crimping apparatus for electrically connecting a substrate and a semiconductor component by crimping an anisotropic conductive film, the upper blade for crimping the anisotropic conductive film A protective sheet disposed between the lower blade, the substrate on which the semiconductor component is mounted, and the upper blade, and a first protective sheet and a replacement second protective sheet are installed For connecting the supply unit, the end detector of the first protective sheet, the protective sheet cutter for cutting the first protective sheet, and the first protective sheet and the second protective sheet. A connection tape supply unit that supplies the connection tape, a reference roller that serves as a reference for affixing the connection tape to the first protective sheet and the second protective sheet, and disposed opposite to the reference roller, The first protective sheet and the A pressing roller that presses the connection tape against the protective sheet 2, and a connection tape cutter for cutting the connection tape affixed to the first protective sheet and the second protective sheet. The crimping device is characterized.

  Further, it is a protective sheet exchange method for exchanging the first protective sheet and the second protective sheet using the crimping apparatus, wherein the end detector detects the end of the first protective sheet. A step of attaching the connecting tape supplied from the connecting tape supply unit and the first protective sheet by sandwiching the connecting roller between the reference roller and the pressing roller; and attaching the first protective sheet to the protective sheet A step of cutting with a cutter, a step of moving the cutting portion of the first protective sheet to the position of the reference roller, and a step of separating the first protective sheet attached to the connection tape from the reference roller. A step of rotating the protective sheet supply unit around the swivel unit and disposing the second protective sheet at the position of the reference roller; and the second protective sheet and the front Attaching the connection tape to which the first protective sheet is attached by sandwiching the connection tape between the reference roller and the pressing roller; cutting the connection tape using the connection tape cutter; The protective sheet replacement method is characterized in that the protective sheet 2 is moved between an upper blade and a lower blade for pressure-bonding the anisotropic conductive film.

  A method of replacing a protective sheet disposed between an upper blade of a crimping apparatus for crimping and electrically connecting a substrate and a semiconductor component through an anisotropic conductive film and the substrate, the protective sheet A step of detecting a sheet end of the first protective sheet supplied from the supply unit; a step of attaching a connection tape to the first protective sheet; and the attached connection tape and the protective sheet supply unit A step of cutting the first protective sheet having the connection tape affixed between them, and affixing the connection tape having the first protection sheet affixed to a second protective sheet Connecting the sheet and the second protective sheet, and cutting the connection tape so as to leave a portion contributing to the connection between the first protective sheet and the second protective sheet. Special to have And how to replace the protective sheet to be.

  By setting it as the said structure, the crimping | compression-bonding apparatus and replacement | exchange method of a protection sheet which can perform replacement | exchange to the new protection sheet at the time of using up a protection sheet easily can be provided.

1 is a schematic side view of a crimping apparatus according to a first embodiment. It is a schematic side view of the principal part of a crimping | compression-bonding apparatus for showing the protection sheet exchange procedure which concerns on a 1st Example. It is a schematic side view of the principal part of a crimping | compression-bonding apparatus for showing the protection sheet exchange procedure which concerns on a 1st Example. It is a schematic side view of the principal part of a crimping | compression-bonding apparatus for showing the protection sheet exchange procedure which concerns on a 1st Example. It is a schematic side view of the principal part of a crimping | compression-bonding apparatus for showing the protection sheet exchange procedure which concerns on a 1st Example. It is a schematic side view of the principal part of a crimping | compression-bonding apparatus for showing the protection sheet exchange procedure which concerns on a 1st Example. It is a schematic side view of the principal part of a crimping | compression-bonding apparatus for showing the protection sheet exchange procedure which concerns on a 1st Example. It is a schematic side view of the principal part of a crimping | compression-bonding apparatus for showing the protection sheet exchange procedure which concerns on a 1st Example. It is a schematic side view of the principal part of a crimping | compression-bonding apparatus for showing the protection sheet exchange procedure which concerns on a 1st Example. It is a schematic perspective view of the protection sheet reel for demonstrating the sheet end detection method of the old protection sheet which concerns on a 1st Example. It is a schematic top view of the protection sheet supply part which concerns on a 1st Example. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic side view of the principal part of a crimping | crimping apparatus for demonstrating the condition of the connection tape cutting | disconnection after the old and new protection sheet connection based on a 1st Example, (a) is before connection tape cutting | disconnection, (b) is at the time of a cutting | disconnection. Indicates the situation. It is a schematic side view of the principal part of the crimping | compression-bonding apparatus which concerns on a 2nd Example. It is a schematic side view of the principal part of the crimping | compression-bonding apparatus for showing the protection sheet replacement | exchange procedure concerning 3rd Example, (a) is immediately after cutting of a connection tape, (b) is when a protection sheet is pulled down after cutting of a connection tape Shows the situation. It is a schematic side view of the conventional crimping | compression-bonding apparatus. It is a schematic plan view which shows an example of a display panel.

Hereinafter, the present invention will be described with reference to examples.

  A first embodiment will be described with reference to FIGS. 1, 2A to 2H, FIGS. 3, 4, and 5. FIG. The crimping procedure described in the column of the problem to be solved by the invention and not described in the present embodiment is the same as the description.

  FIG. 1 is a schematic view of a crimping apparatus according to the present embodiment. This crimping apparatus detects the absence of the protective sheet in addition to the upper blade 102 and the lower blade 105 for crimping for connecting the connection terminal of the semiconductor component and the connection terminal of the substrate 101 with the ACF. Detector 150, sheet cutter 110 for cutting the old protective sheet, reference roller 121 for specifying the position of the protective sheet, and connecting tape supply for supplying a connecting tape for connecting the old protective sheet and the new protective sheet 111, a pressing roller 122 for attaching the connection tape to the protective sheet, a clamp 127 for fixing the old protective sheet, the amount of the connection tape drawn out is controlled to be constant, and the cutting position of the connection tape is changed. An encoder (position angle sensor) 112 for suppressing and a connection tape cutter 113 for cutting the connection tape are provided. Other symbols are the same as those in FIG.

  Next, a procedure for replacing the old and new protective sheets will be described. Fig.2 (a)-FIG.2 (h) are schematic of the crimping | compression-bonding apparatus principal part for demonstrating the protection sheet replacement | exchange procedure based on a present Example. Fig.2 (a) shows the state which used up the old protection sheet 100-1. Whether or not the old protective sheet 100-1 has been used up is determined using the protective sheet end detector 150.

  The protection sheet end detection will be described with reference to FIG. When the color of the old protective sheet 100-1 and the color of the protective sheet supply unit (core of the reel 120-1) are changed, the protective sheet ends and the end 153 of the protective sheet is exposed when the core of the reel 120-1 is exposed. Is detected, and a detection signal is emitted from the detector 150. When the protective sheet is black, detection can be performed with high sensitivity by keeping the reel white. By this signal, the preparation of the next substrate is temporarily stopped, and the following protection sheet replacement is automatically started. Note that this end detection is not limited to a color change, and for example, a change in reel rotation resistance may be detected. Alternatively, the deteriorated protective sheet may be moved every time it is used a predetermined number of times, and detection may be performed by the number of times the unused part of the protective sheet is set.

  In response to the detection signal of the protective sheet end, the frame 141 having the connection tape 114 and the pressing roller 122 moves in the direction of the reference roller 121, and is attached to the old protective sheet 100-1 sandwiched between the reference roller 121 and the pressing roller 122. A connection tape 114 is attached. The bonding surface of the connection tape 114 is disposed on the side opposite to the side in contact with the pressing roller 122. On the other hand, the old protective sheet 100-1 is cut at the upper part of the reference roller 121 by the protective sheet cutter 110 (FIG. 2B). Reference numeral 142 indicates a moving direction of the frame.

  As the protective sheet, there are a fluororesin single layer film and a two-layer film of fluororesin and silicon rubber. Currently, two-layer films (silicon rubber (upper blade side) / fluororesin (lower blade side)) are the mainstream. Silicone rubber serves as a cushion, and fluororesin prevents sticking between the ACF and the protective sheet that protrude during thermocompression bonding. A fluororesin single layer film can be used for COG where the necessity of a cushion is low. For PCBs with large steps, thick silicon rubber (0.45 mm) can be used, and for COF and others, silicon rubber of about 0.2 mm can be used. The connecting tape 114 desirably has a smaller expansion / contraction rate than the protective sheet, and in practice, a polyethylene tape coated with a silicone-based adhesive can be used.

  Subsequently, the old protective sheet 100-1 to which the connection tape 114 is attached is moved downward by the feed roller 123 until the cut portion of the old protective sheet 100-1 comes to the reference roller 121 (FIG. 2C). ). By disposing the protective sheet so as to sandwich the protective sheet between the reference roller 121 and the pressing roller 122, the resistance when the protective sheet is moved can be reduced, and the elongation of the protective sheet can be suppressed small.

  Next, after moving the frame 141 having the connection tape 114 and the pressing roller 122 in the original direction, a new protective sheet 100-2 is prepared. For example, as shown in FIG. 4, the new protective sheet 100-2 and the old protective sheet 100-1 are provided with old and new protective sheet reels 120-1 and 120-2 arranged back to back, and a protective sheet supply having a swivel part 152 at the center. Part 120.

  FIG. 4 is a schematic top view of the protective sheet supply unit 120. By rotating the protective sheet supply unit 120 by 180 degrees around the turning unit 152, the new protective sheet reel 120-2 can be easily moved to the position of the old protective sheet reel 120-1 (FIG. 2). (D)). At this time, the reel 120-1 and the roller 125-1 can be integrated, and the reel 120-2 and the roller 125-2 can be moved together, so that replacement can be performed more smoothly.

  The new protective sheet 100-2 can be drawn in advance so as to be longer than the height position of the reference roller 121 by Z. By changing this amount (Z), it is possible to adjust the overlapping amount of the old and new protective sheets when the old and new protective sheets are connected using the connection tape. It is most preferable that the amount (Z) is zero so that the protective sheet has no waste. However, if the old and new protective sheets do not overlap and form a gap, the adhesive portion of the connecting tape is exposed in the gap, which is not preferable.

  Next, the frame 141 having the connection tape 114 and the pressing roller 122 again moves in the direction of the reference roller 121, and the old protective sheet 100-2 is sandwiched between the new protective sheet 100-2 sandwiched between the reference roller 121 and the pressing roller 122. -1 is attached, and the protective sheet is further moved by the feed roller 123 until the overlapping portion of the connection tape 114 and the old protective sheet 100-1 is lower than the clamp 127 (FIG. 2). (E)).

  In addition, it is suitable for the amount of pulling-down of a protection sheet that the front-end | tip part which the connection tape 114 and the old protection sheet 100-1 overlapped will be a position of the lower end part of the clamp 127. FIG. If it is lowered too much, the connection tape 114 applied to the new protective sheet 100-2 becomes too long, so that they are wasted, and if it is not lowered enough, fixing with the clamp 127 becomes insufficient.

  Next, the portion where the connection tape 114 and the old protective sheet 100-1 overlap is sandwiched and fixed by the clamp 127, and then the frame 141 having the connection tape 114 and the pressing roller 122 is moved in the original direction (FIG. 2 (f )). Then, the connection tape side is cut | disconnected using the connection tape cutter 113 rather than the bonding part of the connection tape 114 and the new protection sheet 100-2 (FIG.2 (g)). This cutting method will be further described with reference to FIG.

  FIG. 5 is a schematic view of the frame 141 to which the connection tape cutter 113 is attached. The frame 141 to which the connecting tape cutter 113 is attached has a rotation shaft at a position where the distance from the tip of the pressing roller 122 and the distance from the cutting edge of the connecting tape cutter 113 are equal, and the cutting edge of the connecting tape cutter 113 is It is located on the circumference 119 (FIG. 5A).

  By rotating the cutting edge of the connection tape cutter along this circumference, the bonded end portion of the connection tape 114 and the new protective sheet 100-2 is cut (FIG. 5B). Actually, it is preferable to cut the connection tape side by rotating the blade edge so that the blade edge of the connection tape cutter is slightly inside the tip of the pressing roller 122.

  In this embodiment, the laminated film of the old protective sheet 100-1 and the connecting tape 114 is fixed by the clamp 127, so that the frame 141 rotates as shown in FIG. However, the laminated film hardly extends, and the connection tape 114 can be cut at a predetermined location.

  When the laminated film is not fixed, the old protective sheet alone portion extends when the frame 141 rotates. The clamp 127 can be omitted by setting the cutting position of the connection tape 114 in consideration of the elongation of the old protective sheet 100-1.

  Next, the part to which the old and new protective sheets are connected by the connecting tape 114 is moved by the feed roller 123 so that the new protective sheet 100-2 is disposed between the upper blade 102 and the lower blade 105 of the crimping apparatus. . Thereby, the replacement of the protective sheet is completed, and the preparation for crimping the next substrate is completed. In response to this, the next substrate crimping process is executed.

  As described above, according to this embodiment, it is possible to provide a pressure bonding apparatus and a method for replacing a protective sheet that can be easily replaced with a new protective sheet when the protective sheet is used up.

  A second embodiment will be described with reference to FIG. The matters described in the first embodiment and not described in the present embodiment are the same as those in the first embodiment. FIG. 6A is a schematic view of a frame 141 including a pressing roller 122, a connection tape supply unit (not described), an encoder (not described), and a connection tape cutter 113. In this embodiment, the frame is provided with a vacuuming / air ejection hole 170 and a flank chamfer 171 when the connection tape is cut.

  Prior to attaching the connection tape to the old and new protective sheets (for example, see FIG. 2A), the connection tape 114 is evacuated 172 by the vacuuming / air blowing hole 170 to fix the connection tape. (FIG. 6B). Thereby, the trouble that the connection tape 114 adheres to components other than the protective sheet 100 can be prevented.

  Further, when the connection tape 114 is affixed to the protective sheet 100 (see, for example, FIG. 2B), the connection tape 114 is reproduced on the protective sheet 100 by evacuating 173 through the evacuation and air ejection holes 170. It can be attached with good quality (FIG. 6C).

  Further, by providing the relief chamfer 171 when the connection tape is cut, the tip of the connection tape 114 is bent toward the frame after the connection tape 114 is cut (FIG. 6D). As a result, when the frame 141 is rotated downward and returned to the original position, it is possible to prevent the connecting tape 114 from cutting off at the tip end portion. In addition, the flank chamfering 171 at the time of cutting the connection tape can be omitted by evacuating the connection tape 114 after cutting the connection tape.

  According to the present embodiment, the same effect as in the first embodiment can be obtained. Moreover, by providing the vacuuming and air ejection holes, it is possible to prevent troubles where the connection tape is inadvertently stuck to parts other than the protection sheet, and it is possible to reliably attach the connection tape to the protection sheet. A crimping device can be provided. In addition, by providing a chamfer at the time of cutting the connection tape, it is possible to provide a crimping device and a method for replacing the protective sheet that can prevent inadvertent movement of the tip of the connection tape after the connection tape is cut.

  A third embodiment will be described with reference to FIG. The matters described in Example 1 or 2 and not described in the present Example are the same as those described. FIG. 7 shows a situation after connecting the old and new protective sheets with the connection tape 114 and then cutting the connection tape 114 (see FIG. 2G).

  In the present embodiment, after the connection tape 114 is cut, the frame 141 provided with the connection tape cutter 113 is not returned to the original position but is stopped (FIG. 7A). In this state, the clamp 127 is released, and the protective roller is moved downward by the feed roller 123 (FIG. 7B). Thereby, even if the connection tape 114 may not be partially cut at the time shown in FIG. 2G, it can be cut completely thereafter.

  According to the present embodiment, the same effect as in the first embodiment can be obtained. In addition, it is possible to provide a crimping device and a method for replacing the protective sheet that can reliably cut the connection tape by moving the protective sheet downward while the connection tape cutter is in a state of cutting the connection tape. .

  DESCRIPTION OF SYMBOLS 100-1 ... Old protection sheet, 100-2 ... New protection sheet, 101 ... Board | substrate, 102 ... Upper blade, 103 ... Heater block, 104 ... Heat insulating material, 105 ... Lower blade, 106 ... Heater block, 110 ... Protection sheet cutter , 111 ... connection tape supply unit, 112 ... encoder, 113 ... connection tape cutter, 114 ... connection tape, 119 ... circumference passing through the tip of the pressing roller and the cutting edge of the connection tape cutter, 120 ... protective sheet supply unit, 120 -1 ... old protective sheet reel, 120-2 new protective sheet reel, 121 ... reference roller, 122 ... pressing roller, 123 ... feed roller, 124 ... take-up roller, 125, 125-1, 125-2 ... rollers, 127 ... clamps, 131 ... trash cans for protective sheets, 141 ... frames, 142 ... movement of frames, 150 ... Mamoru sheet end detector, 152 ... protective sheet feeding unit swivel section, 153 ... protective sheet end, 161 ... crimping portion, 162 ... display unit, 170 ... vacuum and air blowing hole, 171 ... relief chamfer.

Claims (9)

A crimping apparatus for electrically connecting a substrate and a semiconductor component by crimping an anisotropic conductive film,
An upper blade and a lower blade for pressure-bonding the anisotropic conductive film;
Supplying a protective sheet disposed between the substrate on which the semiconductor component is mounted and the upper blade, and a protective sheet supply unit in which a first protective sheet and a second protective sheet for replacement are installed;
An end detector of the first protective sheet;
A protective sheet cutter for cutting the first protective sheet;
A connection tape supply unit for supplying a connection tape for connecting the first protective sheet and the second protective sheet;
A reference roller serving as a reference for attaching the connection tape to the first protective sheet and the second protective sheet;
A pressing roller that is disposed to face the reference roller and presses the connection tape against the first protective sheet or the second protective sheet;
A crimping apparatus, comprising: a first connecting sheet cutter for cutting the first protective sheet and the second connecting sheet attached to the second protective sheet. The crimping apparatus according to claim 1,
The crimping apparatus further comprising a clamp for fixing the first protective sheet and the laminated portion of the connection tape before the connection tape is cut by the connection tape cutter. The crimping apparatus according to claim 1 or 2,
An apparatus for crimping, further comprising an encoder for controlling a pull-out amount of the connection tape. The crimping device according to claim 3.
The crimping apparatus, wherein the connection tape supply unit, the pressing roller, the connection tape cutter, and the encoder are attached to the same frame. The crimping apparatus according to claim 4.
The connection tape is cut by rotating the frame to which the connection tape cutter is attached. In the crimping device according to any one of claims 1 to 5,
The protective sheet supply unit includes a swivel unit, and the position of the first protective sheet and the position of the second protective sheet are switched by rotating 180 degrees around the swivel unit. A characteristic crimping device. The crimping apparatus according to claim 4 or 5,
The pressure-bonding device according to claim 1, wherein the frame has a vacuuming / air blowing hole for the connection tape. The crimping device according to any one of claims 4, 5 and 7,
The pressure bonding apparatus according to claim 1, wherein the frame has a flank chamfer of the connection tape when the connection tape is cut. A method of exchanging a protective sheet disposed between an upper blade of a crimping apparatus and a substrate for crimping and electrically connecting a substrate and a semiconductor component via an anisotropic conductive film,
Detecting the sheet end of the first protective sheet supplied from the protective sheet supply unit;
Attaching a connecting tape to the first protective sheet;
Cutting the first protective sheet to which the connection tape is bonded between the bonded connection tape and the protective sheet supply unit;
Attaching the connection tape to which the first protective sheet is attached to a second protective sheet, and connecting the first protective sheet and the second protective sheet;
And a step of cutting the connection tape so as to leave a portion contributing to the connection between the first protective sheet and the second protective sheet.

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