TWI463506B - Anisotropic conductive film, device and method for pasting the same - Google Patents

Description

Different-direction conductive tape, attaching device and attaching method thereof

The invention relates to a conductive tape, an attaching device and a attaching method thereof, in particular to an anisotropic conductive tape, an attaching device thereof and a attaching method.

Anisotropic Conductive Film (ACF) has been widely used in the assembly of precision electronic devices, and it can connect devices with denser pins than conventional soldering techniques. 1 is a side view of a prior art isotropic conductive tape comprising a release paper 11 and a continuous glue 12 disposed on a surface of the release liner 11. 2 is a schematic view showing a process of attaching the directional conductive tape of the prior art. The feeding wheel 15 conveys the directional conductive tape 10 in the direction of the arrow E. The cutter 18 moves up and down in the direction of the arrow F at a certain frequency, from the glue. The material section 121 is cut out of the material 12. When the rubber section 121 is run between the ram 13 and the target article 14, the ram 13 is depressed to press the rubber section 121 against the target article 14. The release paper strip 11 is then stowed by the recovery wheel 16.

The prior art non-directional conductive tape has the disadvantages that the cutting of the cutter is incomplete during the attaching process, which causes the rubber material to wrinkle, fold, and disappear on the target object, and the light causes the connection between the electronic components. Bad, heavy causes the electronic device to break. In addition, the cutter is expensive, needs to be replaced from time to time, and the precision adjustment is time-consuming (to cut the rubber material, but the release paper tape cannot be cut), which adds a large cost to the manufacturing process.

An object of the present invention is to provide an anisotropic conductive tape which is easy to attach, thereby solving the phenomenon that the cutting of the cutter is incomplete during the attaching process, thereby avoiding poor connection between the electronic devices and damage of the electronic device.

The anisotropic conductive tape comprises a release paper strip and a multi-segment adhesive. A glue is disposed on the first surface of the release paper strip, and the glue material has a color difference from the first surface of the release paper strip.

In an embodiment of the invention, one of the above-mentioned rubber materials has a length greater than 20 mm, and the adjacent two-stage rubber materials are separated by 1 mm to 8 mm.

In one embodiment of the invention, the glue material is black.

In one embodiment of the invention, the first surface of the release liner is black.

In an embodiment of the invention, the rubber material comprises conductive particles.

Another object of the present invention is to provide an anisotropic conductive tape attaching device.

The directional conductive tape attaching device comprises a tape supply mechanism, a release tape recovery mechanism, a glue attachment mechanism and a color difference detector. The glue bonding mechanism is disposed between the tape supply mechanism and the release tape recovery mechanism. The color difference detector is provided between the tape supply mechanism and the above-described glue bonding mechanism.

In an embodiment of the invention, the color difference detector comprises a charge coupled device (CCD).

In an embodiment of the invention, the color difference detector is a laser emitting and receiving device.

Another object of the present invention is to provide a method for attaching an anisotropic conductive tape, comprising: Step 1: providing the above-mentioned attaching device, Step 2: providing an isotropic conductive tape, the above-mentioned anisotropic conductive tape comprising: a paper tape and a plurality of rubber materials disposed on the first surface of the release paper tape, wherein the rubber material has a color difference with the first surface of the release paper tape, and step 3: supplying the anisotropic conductive tape by the tape supply mechanism, Step 4: detecting the position of the rubber material by using the color difference detector, step 5: when a piece of the rubber material reaches the glue bonding mechanism, the glue bonding mechanism attaches the piece of the rubber material to the target object, step 6 : The above release paper tape is recovered by using the above-mentioned release paper tape recovery mechanism.

In an embodiment of the invention, the color difference detector determines the position of the glue material by finding a gap between the two pieces of the rubber material.

Compared with the prior art, the heterogeneous conductive tape of the present invention has the advantage that the cutter does not need to be used in the attaching process, the defects caused by incomplete cutting are avoided, and the maintenance cost of the cutter is also saved.

Fig. 3 is a side elevational view showing the anisotropic conductive tape of the first embodiment of the present invention. As shown in FIG. 3, the anisotropic conductive tape 20 of the present embodiment includes: a release paper tape 21; a plurality of rubber sheets 221 disposed on the first surface of the release paper tape 21, the rubber material 221 and the There is a chromatic aberration on the first surface of the release paper strip. The anisotropic conductive tape 20 of the present embodiment can be applied to the manufacture of a liquid crystal display device. The glue material includes conductive particles, which can be connected to the driving module and the glass substrate, so the length of the length of the rubber material 221 can be greater than one driving module. The length can be, for example, greater than 20 mm. The driving module may include a wafer or a soft substrate, etc., but is not limited thereto, and an appropriate type may be selected according to actual needs. There is a gap 222 between two adjacent rubber pieces, and the adjacent two pieces of rubber are separated by 1 mm to 8 mm, or may be limited to 3 to 5 mm. The multi-stage adhesive 221 may be formed on the release paper web 21 by segment coating.

In the present embodiment, the rubber material 221 is black. The first surface of the release paper strip 21 is any other color other than white, gray or black. In other embodiments, the first surface of the release liner may be black and the glue is other colors than black.

FIG. 4 is a schematic view showing the attaching process of the anisotropic conductive tape in FIG. An anisotropic conductive tape attaching device according to an embodiment of the present invention, as shown in FIG. 4, includes: a tape supply mechanism 25; a release tape recovery mechanism 26; and the tape supply mechanism 25 and the release tape recovery mechanism A glue bonding mechanism 23 between the two; a color difference detector 29 provided between the tape supply mechanism 25 and the glue bonding mechanism 23. In the present embodiment, the color difference detector 29 is a laser emission receiving device. In other embodiments, the color difference detector may be a camera including a charge coupled device (CCD), but is not limited thereto, and may be adjusted according to actual needs.

The attaching process of the anisotropic conductive tape includes:

Step 1: providing the above attachment device;

Step 2: providing an anisotropic conductive tape 20 as shown in Figure 3;

Step 3: The isotropic conductive tape 20 is supplied by the tape supply mechanism 25 in the direction of the arrow G;

Step 4: The position of the glue is detected using the color difference detector 29. The detecting method may be that the color difference detector 29 emits a laser to the isotropic conductive tape 20; if the reflected laser beam is not received, the position corresponding to the color difference detector 29 has a black surface (for example, a black rubber material). 221); if the reflected laser signal is received, it indicates that the position corresponding to the color difference detector 29 is a non-black surface (for example, the gap 222), and the rubber material 221 can accurately correspond to the glue material through the detection of the position of the rubber material. Agency 23 is gone. The gap 222 can also be found using a charge coupled device in other embodiments to determine the position of the glue. That is, the color difference detector judges the position of the glue by finding the gap between the two pieces of glue.

Step 5: When a piece of the rubber material 221 reaches the rubber material bonding mechanism 23, the rubber material bonding mechanism 23 attaches the length of the rubber material 221 to the target object 24; the target object 24 may be a glass substrate or The plastic substrate or the like, the rubber bonding mechanism 23 may be a pressing head that transmits pressure to the rubber 221 through the release paper tape 21 without directly contacting the rubber material 221.

Step 6: The release paper web 21 is recovered by the release paper tape recovery mechanism 26.

It is to be noted that the tape supply mechanism 25 in the anisotropic conductive tape attaching device in the above embodiment; the release tape recovery mechanism 26; the glue bonding mechanism 23 and the like are only schematic views, and are kept in operation in practical use. Stable and reliable may require a more complicated structure, which can be adjusted according to actual needs, and will not be described here.

20. . . Different direction conductive tape

twenty one. . . Release paper tape

221. . . Plastic material

222. . . gap

twenty three. . . Adhesive bonding mechanism

twenty four. . . Target object

25. . . Tape supply mechanism

26. . . Release paper recycling mechanism

29. . . Chromatic aberration detector

G. . . Arrow direction

1-6. . . step

1 is a schematic side view showing a prior art anisotropic conductive tape;

2 is a schematic view showing a process of attaching a different direction conductive tape of the prior art;

3 is a schematic side view showing the anisotropic conductive tape of the first embodiment of the present invention;

FIG. 4 is a schematic view showing the attaching process of the anisotropic conductive tape in FIG.

Figure 5 is a flow chart showing the attachment process of the isotropic conductive tape.

twenty one. . . Release paper tape

221. . . Plastic material

222. . . gap

twenty three. . . Adhesive bonding mechanism

twenty four. . . Target object

25. . . Tape supply mechanism

26. . . Release paper recycling mechanism

29. . . Chromatic aberration detector

G. . . Arrow direction

Claims (10)

An anisotropic conductive tape, comprising: a release paper strip; and a multi-stage adhesive material disposed on the first surface of the release paper strip, the glue material and the first surface of the release paper strip being present Color difference. The anisotropic conductive tape according to claim 1, wherein the length of the length of the rubber material is greater than 20 mm, and the distance between adjacent two pieces of the rubber material is between 1 mm and 8 mm. The anisotropic conductive tape according to claim 1, wherein the adhesive material is black. The anisotropic conductive tape of claim 1, wherein the first surface of the release paper strip is black. The anisotropic conductive tape according to claim 1, wherein the rubber material contains conductive particles. An anisotropic conductive tape attaching device, comprising: a tape feeding mechanism; a release paper tape collecting mechanism; a rubber material bonding mechanism disposed at the tape feeding mechanism and the release paper tape collecting mechanism And a color difference detector disposed between the tape supply mechanism and the glue bonding mechanism. The attaching device according to claim 6, wherein the color difference detector comprises a charge coupled device. The attaching device according to claim 6, wherein the color difference detector comprises a laser emitting and receiving device. A method for attaching an anisotropic conductive tape, comprising: providing the attaching device according to claim 6; providing an anisotropic conductive tape, the distorted conductive tape comprising: a release paper tape and a setting a plurality of pieces of rubber on the first surface of the release paper strip, the glue material having a color difference with the first surface of the release paper strip; the isotropic conductive tape being supplied by the tape supply mechanism; using the color difference Detecting a position of the rubber material; when a length of the rubber material reaches the glue bonding mechanism, the glue bonding mechanism attaches the length of the rubber material to the target object; and the release paper The release tape is recovered by a recycling mechanism. The attaching method according to claim 9, wherein the color difference detector determines the position of the rubber material by finding a gap between the two pieces of the rubber material.