JP3595125B2 - Adhesive sticking device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a film-like adhesive material having adhesive properties on both surfaces and at least one surface covered with release paper, for example, a device for attaching an anisotropic conductive film, and in particular, to wiring of a wiring substrate such as a liquid crystal display panel. The present invention relates to a sticking device for a sticking object which is preferably used when sticking an anisotropic conductive film interposed between a pattern and a TCP or FPC and electrically connecting them.
[0002]
[Prior art]
One of the display devices is a liquid crystal display panel (hereinafter, referred to as LCD). As one method of electrically connecting the terminal of the LCD and the TCP or FPC constituting the liquid crystal driving circuit, an anisotropic conductive film (hereinafter referred to as an Anisotropic Conductive Film) is provided between the terminal of the LCD and the TCP or FPC. , ACF) and heating and pressurizing them to electrically connect them.
[0003]
The ACF is formed by thermocompression bonding a polymer layer in which conductive particles are uniformly dispersed in a synthetic resin and bringing the conductive particles into contact with each other. The ACF is provided with conductivity only in the thickness direction of the film. It has the property of exhibiting insulation properties in directions other than the above. Such an ACF is usually formed into a two-layer or three-layer structure by covering one or both surfaces thereof with release paper in consideration of handleability, and is wound on a reel as an anisotropic conductive film tape. .
[0004]
FIG. 5 shows an ACF attached between a terminal of the LCD and a TCP or FPC. In the figure, reference numeral 1 denotes an ACF mixed with conductive particles 2 such as copper, silver, and gold, and reference numerals 3 and 4 denote release paper and intermediate paper adhered to both surfaces of the ACF 1, respectively. A film tape (hereinafter, referred to as a tape) 5 is formed. The release paper 3 and the intermediate paper 4 are also formed of a synthetic resin film.
[0005]
FIG. 6 is a plan view showing a schematic configuration of a conventional ACF adhering device. Reference numeral 10 denotes a turntable which rotates intermittently by 120 ° in a counterclockwise direction in the figure, and reference numerals 11, 12, and 13 denote the periphery of the turntable 10. The first, second, and third stations 14 provided with phases shifted by 120 ° are dedicated jigs provided on the upper surface of the turntable 10. The three jigs 15 are provided in the circumferential direction of the turntable 10 at the same angular phase as the first, second, and third stations 11, 12, and 13, and an LCD 16 as an adherend is installed. It has become.
[0006]
At the time of attaching the ACF 1, the LCD 16 is first placed on the jig 15 at the first station 11, and the position in the X, Y, and θ directions is finely adjusted by the fine adjustment mechanism and positioned . The supply of the LCD 16 to the jig 15, the positioning, and the removal operation are usually performed by an operator. Next, the tape 5 is supplied to the LCD 16 in the second station 12. Here, after the intermediate paper 4 is peeled from the tape 5, the tape 5 from which the intermediate paper 4 has been peeled is cut into a predetermined length, placed on a terminal of the LCD 16 and temporarily fixed, and The ACF 1 is temporarily attached to the terminal by using the thermosetting property of the ACF 1 by heating and pressing the tape 5 temporarily fixed for a predetermined time, and then the release paper 3 is peeled off. The heating and pressurizing time varies depending on the size of the LCD 16, the pressurizing time, and the like. However, usually, heating is performed for about 5 seconds at a pressing force of 20 kgf / cm ² , a heating temperature of about 100 ° C, and the like. After that, returning to the first station 11, the LCD 16 on which the ACF 1 is stuck is removed from the jig 15, and the next LCD 16 is installed. Hereinafter, similarly, every time the turntable 10 stops by rotating by ３, the take-out, supply, and positioning of the LCD 16 in the first station 11, supply of the tape 5 in the second station 12, temporary fixing, and The ACF 1 is pressed and the release paper 3 is peeled off at the same time. When the LCD 16 to which the ACF 1 is attached is detached from the jig 15, it is electrically connected to TCP or FPC constituting a liquid crystal driving circuit in the next step. At this time, the ACF 1 is temporarily or permanently bonded to TCP or FPC by heating and pressing.
[0007]
[Problems to be solved by the invention]
As described above, the conventional sticking apparatus employs a three-station turntable system and automatically sticks the ACF 1 to the terminal portion of the LCD 16. Since the release paper 3 is peeled off by the release paper peeling mechanism after the temporary attachment, the temporary mounting mechanism and the release paper peeling mechanism are concentrated in one place. Therefore, the structure of the third station 13 is more complicated than that of the first and second stations 11 and 12, and there is a problem that it takes time to attach and adjust the temporary attaching mechanism and the release paper peeling mechanism.
[0008]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to increase the number of stations and make each station a single function, thereby providing a temporary attaching mechanism and a release paper peeling mechanism. An object of the present invention is to provide a sticking device for a sticky object, which can easily perform attachment and adjustment operations.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a sticking device for sticking a sticky object having at least one surface covered with release paper to a sticky object, wherein a turntable on which the sticky object is placed. Four stations are provided around the periphery, a first station is provided with a container for storing the object to be supplied to the turntable, and the second station is cut into a predetermined length to adhere to the turntable. A temporary fixing mechanism for temporarily fixing to the kimono, a temporary attaching mechanism for temporarily attaching the adhered object to the adhered object by heating and pressing for a predetermined time at a third station, and a release paper for separating the release paper at a fourth station it is provided a release mechanism, the release paper separating mechanism, the adhesive tape and the one end portion of the release paper by increasing again when the close contact with the one end portion of the release paper is lowered the adhesive tape Means for separating from the adhesive, the release paper is inserted between one end of the release paper lifted by the means and the adhesive and relatively moved to the other end of the release paper to release the release paper. It is characterized by comprising a release plate for completely releasing the pressure-sensitive adhesive from the adhesive, and means for releasing the release paper from the pressure-sensitive adhesive tape .
Further, the present invention is characterized in that, in the above invention, the adhered object is a liquid crystal display panel, and the adhered object is an anisotropic conductive film.
[0010]
In the present invention, a four-station turntable system is employed, a temporary attachment mechanism is provided in the third station, and a release paper peeling mechanism is provided in the fourth station. Therefore, these two mechanisms are physically separated from each other. be able to. Therefore, attachment and adjustment work of these two mechanisms becomes easy.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.
FIG. 1 is a schematic plan view showing an embodiment in which the present invention is applied to an ACF attaching device, and FIG. 2 is a front view of an ACF supply unit. The same components as those shown in the section of the prior art are denoted by the same reference numerals, and the description thereof will be omitted as appropriate. In these figures, the ACF adhering device 20 employs a four-station turntable system, and provides first to fourth stations 11 to 14 around the turntable 10 with a phase shift of 90 °. .
[0012]
The turntable 10 is rotatably mounted on a gantry 21 and is intermittently rotated by 90 ° counterclockwise in FIG. 1 by an induction motor (not shown). A control unit for controlling the operation of the ACF adhering device 20 is incorporated in the gantry 21. On the upper surface of the turntable 10, four jigs 15 are installed with phases shifted by 90 °. The jig 15 includes an X stage and a Y stage movable in the X and Y directions, a θ stage on which the LCD 1 is mounted so as to be rotatable on a horizontal plane on the Y stage, and an X stage of these stages. , Y, and θ, and a fine adjustment mechanism (not shown) for finely adjusting the position, and is connected to a vacuum pump or a vacuum generator to suck and hold the LCD 16 on the upper surface of the θ stage. Note that such a jig 15 is conventionally known, and is exchanged for each size within a certain range according to the size of the LCD 16.
[0013]
The first station 11 is provided with a container 22 for storing the LCD 16 to which the ACF 1 is not attached, an alignment optical system 23, and a positioning mechanism (not shown) for the LCD 16. Supply and positioning to the LCD 15 and removal of the LCD 16 to which the LCF 1 is attached from the jig 15 are performed. However, when the operator manually supplies the LCD 16 from the container 22 to the jig 15, a positioning mechanism is not required.
[0014]
The alignment optical system 23 is used to adjust the positions of all the jigs 15 by rotating the turntable 10 by 90 ° in advance (initialization), and is automatically performed by image recognition by two cameras 24. In addition, an image captured by the camera 24 is displayed on a monitor.
[0015]
The second station 12 is provided with an ACF supply mechanism (temporary fixing mechanism) 25. The second station 12 separates the intermediate paper 4 from the tape 5 and cuts the intermediate paper 4 into a length corresponding to the length of the terminal portion of the LCD 16. Place on top and temporarily secure. The tape 5 is wound around a supply reel 26, and is fed out by a fixed length by intermittently rotating the reel 26 in synchronization with the turntable 10. At this time, the intermediate paper 4 is peeled off and wound on the intermediate paper take-up reel 27. When the tape 5 from which the intermediate paper 4 has been peeled is cut to a predetermined length, the tape 5 is placed on the terminal portion of the LCD 16 and temporarily fixed.
[0016]
FIGS. 3A to 3E show a temporary fixing process of the ACF by the ACF supply mechanism.
The tape 5 from which the intermediate paper 4 has been peeled is transported along the guide 30 with the release paper 3 up and the ACF 1 down, and stops when the leading end moves to a predetermined position and is held by the pull-out chuck 31 (a). . When the leading edge of the tape 5 is held, the pull-out chuck 31 retreats by a predetermined distance and stops (b), and the suction block 32 sucks the tape 5 between the guide 30 and the pull-out chuck 31 (c). Thereafter, when the cutter 33 is lowered to cut the tape 5 between the block 30 and the suction block 32 (d), the suction block 32 conveys the cut tape 5 above the LCD 16 and places it on the terminal portion 35 thereof. And ACF1 is brought into close contact (e). As a result, the ACF 1 is temporarily fixed to the terminal portion 35.
[0017]
In the third station 13, a temporary attachment mechanism 40 having a crimping head 41 for crimping the ACF 1 to the LCD 16 is installed. The crimping head 41 has a built-in heater, and when the LCD 16 is sent together with the temporarily fixed tape 5 by the intermittent rotation of the turntable 10 and stops at the crimping position, the LCD 16 is lowered by the air cylinder to bring the tape 5 to a predetermined temperature. ACF1 is temporarily attached to the LCD 16 by heating and pressure for a certain period of time. Then, when the ACF 1 is completely pressed, it rises and returns to the initial position.
[0018]
The fourth station 14 includes a release paper peeling mechanism 45, which peels the release paper 3 from the ACF 1.
[0019]
FIGS. 4A to 4D show a release paper peeling step by the release paper release mechanism.
The release paper peeling mechanism 45 includes an adhesive tape 47 attached to a roller 46 and a release plate 48. The roller 46 is moved down by an air cylinder or the like to press the adhesive tape 47 against the front end of the upper surface of the release paper 3. The pattern 3 is brought into close contact with the adhesive tape 47 (a). When the release paper 3 comes into close contact with the adhesive tape 47, the roller 46 rises, and the adhesive tape 47 lifts the front end of the release paper 3 and separates from the ACF 1 (b). When the roller 46 rises to a predetermined height and stops, the release plate 48 is inserted between the peeled ACF 1 and the release paper 3 and moves rearward, thereby releasing the release paper 3 from the ACF 1 over its entire length. Peel (c). Next, the peeled release paper 3 is held by the chuck 49, peeled off the adhesive tape 47, and discharged to the tray (d).
[0020]
When the release of the release paper 3 is completed at the fourth station 14, the LCD 16 returns to the first station 11 with the intermittent rotation of the turntable 10, is removed from the jig 15, and is conveyed to the next step.
[0021]
In the ACF adhering apparatus 20 having such a configuration, the conventional three stations are replaced with four stations, the ACF1 is pressure-bonded in the third station 13, and the release paper 3 is separated from the ACF1 in the fourth station 14. Therefore, the temporary attaching mechanism 40 and the release paper peeling mechanism 45 can be installed sufficiently apart from each other. Therefore, the attachment and adjustment work of these two mechanisms is easy.
[0022]
In the above-described embodiment, an example in which the ACF 1 is applied to the ACF attaching device for attaching the ACF 1 to the LCD 16 has been described. However, the present invention is not limited to this, and at least one side is covered with release paper. The present invention can be applied to all the sticking apparatuses for sticking the peeled object by applying heat and pressure to the object to be stuck.
[0023]
【The invention's effect】
As described above, according to the sticking apparatus for sticking objects according to the present invention, a four-station turntable system is used, and the sticking object is pressure-bonded by the temporary attaching mechanism in the third station, and the release paper peeling mechanism in the fourth station. , The release paper is peeled off, so that the temporary attaching mechanism and the release paper peeling mechanism can be arranged separately. Therefore, the attachment and adjustment work of these two mechanisms is easy.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an embodiment in which the present invention is applied to an ACF attaching device.
FIG. 2 is a front view of an ACF supply unit.
FIGS. 3A to 3E are views showing a temporary fixing step of ACF by an ACF supply mechanism.
FIGS. 4A to 4D are diagrams showing a release paper peeling step by a release paper release mechanism.
FIG. 5 is a view showing an ACF adhered to a driving electrode of an LCD.
FIG. 6 is a plan view showing a schematic configuration of a conventional ACF attaching device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... ACF, 2 ... Conductive particles, 3 ... Release paper, 4 ... Intermediate paper, 5 ... Anisotropic conductive film tape, 10 ... Turntable, 11 ... 1st station, 12 ... 2nd station, 13 ... 3rd Station, 14: Fourth station, 15: Jig, 16: LCD, 22: Container, 25: ACF supply mechanism, 40: Temporary attachment mechanism, 45: Release paper peeling mechanism.

Claims (2)

In a sticking device for sticking a sticky object, at least one surface of which is covered with a release paper, to stick the sticky object to the sticking object,
Four stations are provided around the turntable on which the object is placed, a container for storing the object to be supplied to the turntable is provided in the first station, and the container is provided in the second station. A temporary fixing mechanism for temporarily cutting the object to be adhered on the turntable by cutting into a length, and a temporary attaching mechanism for heating and pressing the object to be adhered to the object to be adhered to the object for a predetermined time at the third station; A release paper release mechanism for releasing the release paper at four stations ;
The release paper peeling mechanism, an adhesive tape, means for lowering the adhesive tape and bringing it up again when brought into close contact with one end of the release paper to peel off one end of the release paper from the adhesive, and A release that is inserted between one end of the release paper lifted by the means and the adhesive and relatively moves to the other end of the release paper to completely release the release paper from the adhesive. A sticking device for sticking objects, comprising: a plate; and means for separating the release paper from the adhesive tape . In the sticking device of the sticking material according to claim 1,
A device for attaching a bonded object, wherein the object to be bonded is a liquid crystal display panel, and the bonded object is an anisotropic conductive film.

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