JP2800682B2 - Resin coating device and application method for slit TAB tape - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for applying a resin to a slit portion of a bent TAB tape.
Folded TAB tape slits that prevent bubbles from occurring, improve coating accuracy and improve quality, and allow the thickness to be changed arbitrarily for each slit, and that do not limit the type of TAB tape Part resin coating equipment,
And an application method.

[0002]

2. Description of the Related Art As a TAB tape carrier, there is, for example, a folded TAB tape for mounting a bent board used for mounting an LCD panel or the like.

FIGS. 4 and 5 show the structure of a folded TAB tape. This bent TAB tape is formed by etching an insulating film tape 1 made of polyimide, polyester, or the like, and a metal layer such as a copper foil adhered to the upper surface of the tape by an adhesive.
Is formed of the conductor pattern 2 formed on the upper surface of the substrate.

[0004] The insulating film tape 1 has a sprocket hole 3 for carrying and positioning, a device hole 4 for accommodating a semiconductor chip and connecting its electrode to an inner lead, and an input outer lead for a printed circuit board. And a slit portion 6 for improving bendability at a bent portion.
Is formed.

[0005] The slit portion 6 is provided with the conductor pattern 2 thereon.
Has a resin 7 for covering the back surface thereof, and the resin 7 supports the conductive pattern 2 at the time of bending, thereby preventing short-circuit and disconnection of each lead.

Conventionally, when applying resin to a plurality of slit portions of a folded TAB tape, for example, a screen printing method as shown in FIG. 6 is generally used. That is, the bent TAB tape 8 is conveyed at a predetermined pitch, and the bent TAB tape 8 is bent with respect to the screen 9 so that the slit portion 6 which is the coated portion of the TAB tape 8 corresponds to the plate 11 having the coating shape of the screen 9. After the positioning of the squeegee 8, the squeegee 10 on the screen 9 is reciprocated in a direction perpendicular to the traveling direction of the TAB tape 8, thereby applying the resin 7 to the slit 6 of the folded TAB tape 8.

[0007]

However, according to the conventional method of applying resin to the slit portion of the bent TAB tape, there are the following problems. (1) There is a problem that a large number of large bubbles are generated in the resin applied to the narrow slit portion and the quality of the product is deteriorated. That is, there is a problem that a product in which the resin reliably protects the conductor pattern of the slit portion cannot be obtained. In addition, bend the squeegee TA
Since the reciprocating motion is performed in a direction perpendicular to the traveling direction of the B tape, the problem of the air bubble becomes extremely remarkable. (2) It is difficult or impossible to adjust the thickness of the resin applied to each slit, and the thickness of the resin applied to the slit cannot be changed according to the bending angle of the bent TAB tape. (3) The pitch between slits of the folded TAB tape is
Since the pitch must match the pitch of the screen plate, the type (pitch) of the folded TAB tape is limited. Further, in order to support a plurality of types of bent TAB tapes having different pitches, a plurality of types of screens must be prepared.

Accordingly, an object of the present invention is to provide a slit TAB tape slit resin coating apparatus capable of preventing the generation of air bubbles and improving the coating accuracy and quality.
And an application method.

Another object of the present invention is to provide an apparatus and a method for applying a resin to a slit portion of a bent TAB tape, which can arbitrarily change the thickness of the resin for each slit portion.

It is a further object of the present invention to provide a folding T-shaped tape that can be used without limiting the type of TAB tape.
An object of the present invention is to provide an AB tape slit section resin application apparatus and application method.

[0011]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention is to prevent the generation of bubbles, improve the coating accuracy and improve the quality, and arbitrarily change the thickness of the resin for each slit portion. Transport means for transporting the folded TAB tape at a predetermined pitch and positioning a portion to be coated of the folded TAB tape on the coating stage, so that the type of the TAB tape is not limited; A dispenser head that is disposed on the bent TAB tape and discharges a predetermined amount of resin, a robot that supports the dispenser head and performs at least two-dimensional movement, a transport unit, a dispenser head, and a robot that controls the dispenser. Equipped with control means for applying the resin discharged from the head to the plurality of slits of the bent TAB tape Folding there is provided a slit portion resin coating device of the TAB tape.

The control means is configured to control a moving speed of the robot in each axial direction and a discharge amount of the resin from the dispenser head based on a liquid level of the resin in the dispenser head.

The control means has a structure for controlling the transport pitch of the transport means based on the pitch between a plurality of slits in the longitudinal direction of the folded TAB tape.

Further, in the method of coating a slit portion of a folded TAB tape with a resin according to the present invention for achieving the above object, the bent TAB tape is conveyed at a predetermined pitch, and the coated portion of the bent TAB tape is positioned on a coating stage. A predetermined amount of resin is discharged from a dispenser head supported by a robot that performs at least two-dimensional movement on a bent TAB tape of a coating stage, and the robot is moved in each axial direction based on a liquid level of the resin in the dispenser head. By moving the resin at a predetermined speed, the resin is applied to the plurality of slit portions in a predetermined shape and thickness.

The application of the resin having a predetermined shape and thickness to the plurality of slits may be performed by controlling the amount of resin discharged from the dispenser head in each slit and moving the robot in at least two-dimensional axial directions. The speed may be changed.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a folded TAB tape according to the present invention.

FIGS. 1 and 2 show an apparatus for applying a resin to a slit portion of a bent TAB tape according to an embodiment of the present invention. This slit portion resin coating device has a bending T
The transporting means 16 transports the AB tape 8 at a predetermined pitch and positions the coated portion of the bent TAB tape 8 on the coating stage.
Three dispenser heads 17A, 17B, 17C that are arranged on the AB tape 8 and discharge the resin 7 by a predetermined amount
And a three-axis robot 26 that supports the dispenser heads 17A, 17B, and 17C and performs three-dimensional movement, the transport means 16, and the dispenser heads 17A, 17B, 17C,
And a control unit 29 for controlling the three-axis robot 26 to apply the resin 7 to the plurality of slits 6 of the bent TAB tape 8.

The transport means 16 is provided with the folded TAB tape 8
And a back tension roll 13 for imparting tension to the folded TAB tape 8 during transport, and a positioning pin 15 inserted into the sprocket hole 3 of the folded TAB tape 8, and the folded TAB tape 8 is provided with a positioning table 14 for positioning it at a predetermined position.

Dispenser heads 17A, 17B, 17
C is configured to house the resin 7 therein and discharge the resin 7 from the tip of the needle 19 upon receiving a predetermined air pressure adjusted by the dispenser air pressure controllers 18A, 18B, 18C. Is supported by a Z-axis table 25 of a three-axis robot 26, which will be described later, via an X-axis fine adjustment micro 20, a Y-axis fine adjustment micro 21, and a Z-axis fine adjustment micro 22, so as to be finely adjusted in each axis direction. ing. Also, the dispenser head 17A,
A liquid level sensor 32 is arranged near 17B and 17C, and detects the liquid level of the resin 7 contained in each of them.

The three-axis robot 26 comprises an X-axis table 23 moving in the X-axis direction, a Y-axis table 24 moving in the Y-axis direction, and a Z-axis table 25 moving in the Z-axis direction. , Y driver 30, and Z
It has a configuration driven by a driver 31.

The control means 29 includes a conveyance control device 27 for controlling the feed roll 12, the back tension roll 13 and the positioning table 14 of the conveyance means 16, a detection signal from the liquid level sensor 32 and a predetermined signal from the conveyance control device 27. X driver 2 of the 3-axis robot 26 based on the signal of
9, a Y driver 30, a Z driver 31, and a robot controller 28 for controlling the dispenser air pressure controllers 18A, 18B, 18C of the dispenser heads 17A, 17B, 17C.

The transport controller 27 controls the feed roll 12 based on the pitch between the slits 6 of the folded TAB tape 8 set in a memory or the like, and transports the folded TAB tape 8 at a predetermined transport pitch. At the same time, after the conveyance, the positioning table 14 is raised, the positioning pins 15 are inserted into the sprocket holes 3 of the bent TAB tape 8, and the coated portion of the bent TAB tape 8 is positioned on the coating stage. .

The control of the transport pitch of the bent TAB tape 8 by the transport controller 27 is performed, as shown in FIGS. 3A, 3B and 3C, by way of example.
A, 17B, TAB bending than the pitch P ₁ between 17C
If the pitch P ₂ between the slits 6 of the tape 8 is small, the resin 7 is applied to the three slits 6 which corresponds to the dispenser head 17A, 17B, 17C (in Fig. 3
(b)), then carry the TAB tape 8 folded at the feed roll 12 by _two minutes pitch P, and the resin 7 is applied to the resin 7 to the three slits 6 adjacent to the slit portion 6 was applied (Fig. 3 of (c)), further adapted to position the new slit portion 6 resin 7 it is not coated with the TAB tape 8 to 5 pitches conveyed to application stage of the pitch P ₂ bent at feed rolls 12 . Since the folded TAB tapes 8 can be transported at different transport pitches as described above, it becomes possible to apply the resin to the slit portions of a plurality of types of folded TAB tapes 8 having different pitches depending on the program.

When the robot controller 28 receives the information indicating that the positioning of the folded TAB tape 8 has been completed from the transfer control device 27, the robot controller 28 drives an X driver 29, a Y driver 30, and a Z driver 31, which drive the three-axis robot 26,
Dispenser pneumatic controller 18A, 18B, 18C
To control the dispenser heads 17A, 17B, 17
C is moved three-dimensionally, and the
The resin 7 is ejected from the tips of the needles 19 of A, 17B, and 17C, and the resin 7 is applied to the slit portions 6 of the bent TAB tape 8. In the coating operation, the coating shape and the coating thickness are determined by the viscosity characteristics of the resin 7, the height of the needle 19, the dispenser head 17A,
The dispenser heads 17 </ b> A, 17 </ b> B, 17 </ b> B, 17 </ b> B, 17 </ b> B, 17 </ b> B, 17 </ b> B, 17 </ b> B, 17 </ b> C,
The height of the needle 19 (the height of the Z-axis table 25) based on a detection signal corresponding to the liquid level of the resin 7 in the 17C.
The control for adjusting the traveling speed of the needle 19 (the moving speed of the X-axis table 23) according to the coating shape and the coating thickness is also performed at the same time. For this reason, it becomes possible to apply the resin 7 in an arbitrary application shape and an arbitrary application thickness for each slit portion 6 depending on a program.

Hereinafter, the operation of the present invention will be described. First, the conveyance control unit 27, for example, based on the pitch P ₂ of the slits 6 of the folding TAB tape 8 is set in a memory or the like to control the feed roll 12, calculates the conveying pitch of the TAB tape 8 fold, resulting The folded TAB tape 8 is transported at the transported pitch. And bending TA
When the portion to be coated of the B tape 8 reaches the coating stage, the positioning table 14 is raised, and the folded TAB tape 8
Perform positioning.

Next, bending TA
When the information that the positioning of the B tape 8 is completed is output to the robot controller 28, the robot controller 28
X driver 29, Y driver 30, and Z driver 3
1 to control the X-axis table 23 of the three-axis robot 26,
By moving the Y-axis table 24 and the Z-axis table 25 in each axis direction, the dispenser heads 17A, 17B, 17
C, each needle 19 is positioned at one end of the corresponding slit portion 6 at a predetermined height, and the dispenser pneumatic controllers 18A, 18B, 18C are controlled to control the dispenser heads 17A, 17B, 17C to a predetermined pneumatic pressure. Is applied, and each needle 19 is moved at a predetermined speed toward the other end of the slit portion 6 while the resin 7 is discharged from the tip of each needle 19.

At this time, based on the liquid level of the resin 7 in the dispenser heads 17A, 17B, 17C detected by the liquid level sensor 32, the robot controller 28
Is the height of the needle 19 (the height of the Z-axis table 25) and the traveling speed of the needle 19 (the moving speed of the X-axis table 23).
, The resin 7 can be applied to the plurality of slits 6 with a desired application shape and application thickness.

On the other hand, the depenser heads 17A, 17B,
If the resin 7 is applied under different conditions for each 17C, the application shape and application thickness of the resin 7 can be changed for each slit portion 6.

In the embodiment described above, three dispenser heads are used. However, the present invention is not particularly limited to this. Further, the transport pitch in the transport control device 27 is calculated based on the pitch of the slit portion 6 of the bent TAB tape 8 set in a memory or the like.
The pitch of the slit 6 of the bent TAB tape 8 may be detected by a camera or the like, and the transport pitch may be calculated based on the detected pitch.

[0030]

As described above, according to the resin coating apparatus and the coating method for the slit portion of the bent TAB tape of the present invention, the bent TAB tape is transported at a predetermined pitch by the transport means, and the bent TAB tape is covered with the resin. The coating unit is positioned on the coating stage, and a predetermined amount of resin is discharged from a dispenser head supported by a robot performing at least two-dimensional movement on the bent TAB tape of the coating stage, and the liquid level of the resin in the dispenser head is reduced. Based on the above, the robot is moved at a predetermined speed in each axial direction to apply the resin to the plurality of slit portions in a predetermined shape and thickness, so that generation of bubbles is prevented and application accuracy is improved. Quality can be improved, and the thickness of the resin can be arbitrarily changed for each slit. Limited to the types of flops can be made so as not to cause.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of the present invention.

FIG. 2 is a block diagram showing one embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a transport pattern of a bent TAB tape according to one embodiment.

FIG. 4 is a top view showing a bent TAB tape.

FIG. 5 is a sectional view showing a bent TAB tape.

FIG. 6 is an explanatory view showing a conventional method of applying resin to a slit portion of a bent TAB tape.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulating film tape 2 Conductor pattern 3 Sprocket hole 4 Device hole 5 Outer hole 6 Slit part 7 Resin 8 Folded TAB tape 9 Screen 10 Squeegee 11 Plate 12 Feed roll 13 Back tension roll 14 Positioning table 15 Positioning pin 16 Transporting means 17A, 17B , 17C Dispenser head 18A, 18B, 18C Pneumatic controller 19 Needle 20 X-axis fine adjustment micro 21 Y-axis fine adjustment micro 22 Z-axis fine adjustment micro 23 X-axis table 24 Y-axis table 25 Z-axis table 26 3-axis robot 27 Transport Control device 28 Robot controller 29 Control means 32 Liquid level sensor

────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Norio Okabe 3550 Kida Yomachi, Tsuchiura-shi, Ibaraki Hitachi Cable, Ltd. System Materials Research Laboratories (56) References JP-A-5-226424 (JP, A) JP-A-3-280554 (JP, A) JP-A-4-137740 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01L 21/60 311 H01L 21/56

Claims (5)

(57) [Claims] A slit TAB tape slit resin applying apparatus for applying a protective resin to a plurality of slits formed in a bent portion of a bent TAB tape, wherein the bent TAB tape is transported at a predetermined pitch. Conveying means for positioning a portion to be coated of the bent TAB tape on a coating stage; a dispenser head disposed on the bent TAB tape in the coating stage, for discharging the resin by a predetermined amount; and supporting the dispenser head. A robot that performs at least two-dimensional motion, and controls the transport unit, the dispenser head, and the robot to apply the resin discharged from the dispenser head to the plurality of slit portions of the bent TAB tape. Folding means Under TAB tape slits resin coating device. 2. The apparatus according to claim 1, wherein the control means controls a moving speed of the robot in each axial direction based on a liquid level of the resin in the dispenser head and a discharge amount of the resin from the dispenser head. The slit-section resin coating device for the bent TAB tape according to claim 1. 3. The slit resin application of the bent TAB tape according to claim 1, wherein the control means controls a transport pitch of the transport means based on a pitch between a plurality of slits in a longitudinal direction of the folded TAB tape. apparatus. 4. A method for applying a resin for protection to a plurality of slits formed in a bent portion of a bent TAB tape, wherein the resin is applied at a predetermined pitch. Positioning a portion to be coated of the bent TAB tape on a coating stage, and discharging a predetermined amount of the resin from a dispenser head supported by a robot performing at least two-dimensional motion on the bent TAB tape of the coating stage. Applying the resin to the plurality of slits in a predetermined shape and thickness by moving the robot at a predetermined speed in each axial direction based on a liquid level of the resin in the dispenser head. Method for applying resin to slit portion of bent TAB tape 5. The method according to claim 5, wherein the application of the resin having the predetermined shape and thickness to the plurality of slits is performed by controlling a discharge amount of the resin from the dispenser head at each slit and at least two-dimensional 5. The method according to claim 4, wherein the moving speed in the axial direction is varied.