JPH07329914A - Method for alignment-mounting of tape carrier package, and apparatus for mounting tape carrier package - Google Patents

Abstract

PURPOSE:To improve recognition accuracy for an alignment mark by recognizing a position of the alignment mark of a tape carrier package while its posture is corrected with the package brought into contact with a posture correcting face. CONSTITUTION:In positioning a tape carrier package(TCP) 21 with an LCD 20, a long hole 6 is provided on an LCD table 4 for recognizing an alignment mark(AM) 24 of the LCD 20, and the LCD table 4 is moved to bring a position of the AM 24 of the LCD 20 onto a photograph region A. The position of the AM 24 is recognized by an AM recognizing part 3 in this state. Then a TCP suction head 5 is moved to be placed at a slight gap from the LCD carrying table 4. The suction head 5 is further lowered to be in contact with a posture correction part 7, whereby the TCP 21 is in plane contact with a posture correcting face 8 so that its position is corrected into a normal plane. In this state, the position of the AM 24 is recognized by the AM recognizing part 3 via the posture correction part 7 comprising a transparent body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting a tape carrier package on a member to be connected such as an LCD and a device used for such mounting.

[0002]

2. Description of the Related Art Conventionally, TAB (Tape Automated Bonus)
The tape carrier package (hereinafter, abbreviated as TCP) used in the ding method is, for example, a liquid crystal display element (hereinafter, L).
(Abbreviated as CD), it is adopted as a member for mounting a drive circuit chip.

In such a TCP, it is necessary to accurately align the external connection terminal of the TCP and the external connection terminal of the LCD and then to connect the both.
Alignment marks are formed on both of them, and the external connection terminals are aligned by matching these alignment marks.

Initially, such alignment work was performed visually by the operator, but the number of external connection terminals increases with the high integration of LCDs. In other words, the terminal formation pitch is fine. It becomes impossible to see as it becomes
In recent years, it has been automated by a mounting device using image processing.

FIG. 2 shows a conventional example of such an alignment mounting apparatus for a tape carrier package. The alignment mounting apparatus 50 includes an alignment mark recognition section 52 having an image input section 51, and an LCD transport table 5 provided so as to be able to move forward and backward with respect to a photographing area A of the image input section 51.
3 and a TCP suction head 54 that is provided so as to be able to move forward and backward with respect to the photographing area A of the image input unit 51 and that is opposed to the LCD transport table 53 when entering the photographing area A. .

Then, an LCD is mounted on the LCD transport table 53.
The external connection terminal 22 of the LCD 21 is installed by inserting the TCP 20 into the photographing area A of the image input unit 51 with the TCP suction head 54 sucking and sucking the TCP 21.
And the external connection terminal 23 (not shown in FIG. 2) of the TCP 21 are superposed on the imaging area A. In this state, the alignment marks 24 of both the LCD 20 and the TCP 21 are imaged by the image input section 51, and the positions of the alignment marks 24 are recognized by the alignment mark recognition section 52 (the external connection terminal 22 forming portion of the LCD 20 and the outside). The anisotropic conductive adhesive tape 25 provided on the connection terminal 22 is a translucent material, and
Both alignment marks 24 can be recognized even when the D20 and TCP 21 are superposed on each other, and the position of the TCP suction head 54 is adjusted based on the recognition result so that both alignment marks 24 are matched. If the alignment marks 24 match, the TCP suction head 54 is moved toward the LCD transport table 53 side,
Both external connection terminals 22 and 2 are placed via the anisotropic conductive adhesive tape 25 placed on the external connection terminals 22 of the LCD 20.
Connect and fix 3.

[0007]

By the way, in the alignment mounting apparatus 50 configured as described above, the recognition accuracy of the alignment mark 24 is low, and therefore the TCP2
1 cannot be accurately connected to the LCD 20, that is, the member to be connected, and further, in order to be accurately connected, the alignment operation must be performed many times, and the work time becomes longer accordingly. There was a problem.

The reason will be described below. TCP21
Is a polymer film that has a wiring pattern such as the external connection terminals 23 and is wound into a reel, is drawn out and punched out with a die, and further, elements such as a drive circuit chip are mounted on the punched-out fetal. It is configured. for that reason,
When the reel 21 was wound up, the curl remained, and the finished TCP 21 often warped. Further, in the TCP 21, a protective film for protecting the wiring pattern is arranged on the TCP 21, but there is a difference in thermal expansion coefficient between this protective film and the TCP 21 main body.
As a result, the TCP 21 is distorted and the warp is further increased. (Refer to FIG. 3, but in FIG. 3, for convenience of explanation, the direction of TCP 21 is reversed from that of FIG. 2.) However, when the TCP 21 is warped, depending on the direction of the warp, the end of TCP 21 may be changed. The part is separated from the TCP suction head 54. Therefore, in order to prevent the end of the TCP 21 from adhering to the anisotropic conductive adhesive tape 25 during the alignment operation and preventing the alignment operation from being performed, the amount of separation of the TCP 21 end is equal to TC.
The P suction head 54 had to be separated from the LCD transport table 53. However, then TCP
It is difficult to fit the alignment mark 24 of 21 and the alignment mark 24 of the LCD 20 within the range of the depth of focus of the image input unit 51, which causes a reduction in alignment mark recognition accuracy.

Further, the TCP 21 is warped to cause TC.
When the end of P21 is separated from the TCP suction head 54, the alignment mark 2 of TCP21 is warped by the amount of warpage.
It was unavoidable that the shift B occurred at position 4 (see FIG. 4). Therefore, the image input unit 21 cannot accurately measure the alignment mark position of the TCP 21, which also causes a reduction in alignment mark recognition accuracy.

Therefore, in the present invention, T which can improve the recognition accuracy of the alignment mark of TCP.
An object of the present invention is to provide a CP (tape carrier package) alignment mounting method and an alignment mounting apparatus.

[0011]

In order to achieve such an object, the first invention of the present invention is directed to a position of an alignment mark of a tape carrier package held by one of a pair of holding portions arranged opposite to each other. And the position of the alignment mark of the connected member held on the other side, the two holding parts are moved relative to each other to align the alignment marks, and the tape carrier package is connected to the connected member. In the alignment mounting method of the tape carrier package which is connected and fixed to, the position recognition of the alignment mark of the tape carrier package is performed in a state where the tape carrier package is brought into contact with a posture correction surface and the posture is corrected. is there.

The position of the tape carrier package is recognized by forming the posture correcting surface on a transparent body and capturing an alignment mark image of the tape carrier package which is transmitted through the transparent body to perform image processing. Preferably.

A second aspect of the present invention is an alignment mark recognizing unit for recognizing the position of each alignment mark by taking in the image of the alignment mark of the tape carrier package and the image of the alignment mark of the connected member and performing image processing. A connected member holding portion that holds the connected member, is provided outside the alignment mark recognition portion, and is capable of advancing and retracting with respect to an alignment mark photographing region of the alignment mark recognition portion; A tape carrier package that holds the carrier package and that is further outward of the connected member holding portion and is capable of advancing and retracting with respect to the alignment mark photographing area. Aligner The tape carrier package holding portion that moves relative to the connected member holding portion based on the measurement result, and the tape carrier package holding portion are provided inward of the tape carrier package holding portion and capable of moving forward and backward with respect to the alignment mark photographing region A posture correction section, and the posture correction section holds the tape carrier package with the tape carrier package holding section that has advanced at the same time when the posture correction section advances to the alignment mark photographing area. The tape carrier package mounting device includes a posture correction surface for correcting the posture of the package and an alignment mark leaking unit for leaking the alignment mark image of the sandwiched tape carrier package to the alignment mark recognition unit side. Configured.

It is preferable that the connected member holding portion and the posture correcting portion are integrally provided.

Further, it is preferable that the alignment mark leaking means is constituted by forming the posture correcting portion from a transparent body.

[0016]

According to the first aspect of the present invention, since the position of the alignment mark of the tape carrier package is recognized while the tape carrier package is brought into contact with the posture correcting surface and the posture thereof is corrected, the alignment operation is performed. The position of the alignment mark at the time does not deviate from the position of the alignment mark at the time of mounting.

The position of the tape carrier package is recognized by forming the posture correcting surface on a transparent body and capturing an alignment mark image of the tape carrier package which is transmitted through the transparent body and performing image processing. By doing so, the recognition of the alignment mark can be automated.

According to the second aspect of the present invention, the connected member held by the connected member holding portion is advanced to the photographing area of the alignment mark recognizing portion, the alignment mark is photographed, and its position is recognized. Further, the tape carrier package held by the tape carrier package holding unit is advanced to the photographing area of the alignment mark recognition unit, the alignment mark is photographed, and its position is recognized. At that time, since the tape carrier package is brought into contact with the posture correcting surface of the posture correcting section that has advanced at the same time as the tape carrier package to correct the posture, the position of the alignment mark is corrected and always becomes a regular position. At this time, the posture correction unit is provided with alignment mark leakage means, and the alignment mark image of the tape carrier package hidden by the posture correction surface leaks to the alignment mark recognition unit side. It can be recognized by the recognition unit.

Then, based on the recognition result of both alignment marks, the tape carrier package holding portion or the connected member holding portion is moved to align both alignment marks, thereby positioning the tape carrier package with respect to the connected member. And fix the connection.

It should be noted that there is no problem in moving the connected member holding portion and the posture correcting portion integrally due to the mechanism. If the connected member holding portion and the posture correcting portion are integrally provided, they can be moved. You can have one configuration.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing the configuration of an alignment mounting apparatus according to an embodiment of the present invention. This alignment mounting apparatus 1 is provided with a TCP 21 equipped with a drive circuit chip.
Is a device used when the is mounted on the LCD 20. L
The external connection terminals 22 and 2 are provided on the CD 20 and the TCP 21.
The structure is the same as that described in the conventional example such that the alignment marks 24 are formed on both outsides of both ends of 3, and the same portions are denoted by the same reference numerals.

The alignment mounting apparatus 1 includes an alignment mark recognition section 3 having an image input section 2. An LCD is provided outside the image input unit 2 (upper side in the figure).
A transport table 4 is provided. The LCD transport table 4 is arranged so as to be able to move forward and backward with respect to the imaging area A of the image input unit 2 by a delivery mechanism (not shown). A TCP suction head 5 is provided outside (in the figure, upper side) of the LCD transport table 4. The TCP suction head 5 is arranged so as to be able to move forward and backward with respect to the image pickup area A and also with respect to the LCD transport table 4 by a moving mechanism (not shown).

The upper surface of the LCD transport table 4, that is,
The LCD 20 is attached and fixed to the surface located on the TCP suction head 5 side. Further, a long hole 6 is formed at a position where the external connection terminal 22 is provided on the LCD transport table 4. The long hole 6 is provided to leak the alignment mark 24 of the LCD 20 to the image input unit 2 side. Furthermore, the LCD transport table 4 is provided with a posture correction unit 7. The posture correcting section 7 is provided on the LCD transport table 4 so as to face the LCD attachment position with the long hole 6 interposed therebetween, and is made of a transparent glass plate, a transparent resin plate or the like having a thickness reaching the front and back of the LCD transport table 4. It is composed of a transparent body. The posture correction unit 7 configured in this way is LC
It is embedded in the D transport table 4. The upper surface of the posture correcting section 7 is flat and constitutes a posture correcting surface 8. The posture correcting section 8 is supported and fixed in a state where the posture correcting surface 8 is lifted slightly above the upper surface of the LCD transport table 4.

The TCP suction head 5 has an inner surface, that is,
The surface located on the side of the image input unit 2 is a suction surface 5a, and a suction hole (not shown) connected to a vacuum pump or the like (not shown) is provided in the suction surface 5a. The TCP 21 is suction-held via the.

In the figure, reference numeral 9 is an optical fiber for guiding a coaxial epi-illumination light source to the image input section 2, and 10 is a TC.
Reference numeral 11 denotes a light source for transmitted illumination provided outside (above in the figure) of the P suction head 5, and reference numeral 11 denotes a light source for auxiliary illumination provided obliquely inside (below in the figure) the image input unit 2. .

Next, the operation of the alignment mounting apparatus 1 will be described. First, with the TCP suction head 5 and the LCD transport table 4 retracted from the photographing area A of the image input unit 2, the suction side of the TCP suction head 5 is made to suck the back side of the external connection terminal forming surface of the TCP 21. , And even L
The LCD 20 is attached and fixed to a predetermined position of the CD transport table 4 with the external connection terminal 22 facing upward.

First, the LCD transport table 4 is moved to the position where the long hole 6 is arranged in the photographing area A by + Y in the figure.
Advance in the direction. In this state, the LCD transport table 4 is further moved in the + X direction (or the −X direction) in the figure, and one of the alignment marks 2 of the LCD 20 is moved.
The arrangement position of 4 is brought to the photographing area A. In this state, the position of one of the alignment marks 24 is recognized by the alignment mark recognition unit 3. When the recognition work for one of the alignment marks 24 is completed, this time the LCD
The transport table 4 is moved in the X direction in the figure, in the direction opposite to the previous direction, and the other alignment mark 2 on the LCD 20 is moved.
The arrangement position of 4 is brought to the photographing area A. In this state, the position of the other alignment mark 24 is recognized by the alignment mark recognition unit 3. This recognition work is
The portion where the external connection terminal 22 of the LCD 20 is formed is semi-transparent, and the alignment mark 24 on the surface of the LCD 20 is formed.
Since the watermark can be seen from the back side, it can be done without any problems. In addition, the alignment mark 24 of the LCD 20
In order to recognize the above, the LCD transport table 4 is provided with a long hole 6, but even if a transparent body such as transparent glass is buried in the LCD transport table 4 instead of the long hole 6, the alignment is similarly performed. The mark 24 can be recognized.

When the work of recognizing the alignment mark of the LCD 20 is completed, first, the LCD transport table 4 is retracted in the -Y direction in the figure until the posture correcting section 7 is positioned on the photographing area A. In this state, the TCP is further moved to a position where the external connection terminal 23 of the TCP 21 is disposed (which corresponds to the −Y side end of the suction surface 5a in the figure) to enter the photographing area A.
The suction head 5 is advanced in the -Y direction in the figure. Then, the TCP suction head 5 is moved in the + X direction (or the -X direction may be used) in the figure, and the position where the alignment mark 24 on one side of the TCP 21 is disposed is brought to the photographing area A. At this time, the TCP suction head 5 is arranged with a slight gap with respect to the LCD transport table 4 so as to be movable in the Y direction and the X direction. Therefore, the TCP suction head 5 is further moved slightly in the -Z direction in the figure to eliminate the above-mentioned gap and bring the TCP 21 into contact with the posture correcting section 7. Then, the TCP 21 is attached to the posture correcting surface 8, so that the posture is corrected to a regular flat shape, and the alignment mark 24 is not displaced from the regular position.

In this state, one of the alignment marks 2
The position 4 is recognized by the alignment mark recognition unit 3. When the recognition work of one alignment mark 24 is completed, this time, the TCP suction head 5 and the LCD transport table 4 are synchronously moved in the X direction in the direction opposite to the previous direction in the figure, and the other alignment mark of the TCP 21 is moved. The arrangement position of 24 is brought to the photographing area A. At this time, TCP
Since the suction head 5 and the LCD transport table 4 move synchronously, the alignment marks 24, 24 of the TCP 21 are not displaced. In this state, the position of the other alignment mark 24 is recognized by the alignment mark recognition unit 3. Such an alignment mark recognition operation can be performed without any problems because the posture correction unit 7 is made of a transparent body and the alignment mark can be seen as a watermark from the back side of the 24LCD transport table 4.

When the work of recognizing the alignment mark 24 of the TCP 21 is completed, the TCP suction head 5 is once moved to + Z.
The TCP 21 is retracted by moving the LCD transport table 4 to the position where the external connection terminal 22 of the LCD 20 is arranged in the photographing area A in this state.
In the + Y direction in the figure. At this time, LCD
20 external connection terminal 22 and TCP 21 external connection terminal 2
Since a slight gap will be formed between 3 and
There is no problem that the external connection terminal 23 touches the anisotropic conductive adhesive tape 25 provided on the external connection terminal 22 to make it difficult to move the LCD transport table 4.

After the LCD transport table 4 is advanced to the position where the external connection terminal 22 of the LCD 20 is located on the photographing area A, the alignment mark 24 of the LCD 20 recognized in the previous step is also recognized in the previous step. TCP
The TCP suction head 5 is slightly moved in the X and Y directions so that the positions of the alignment marks 24 of 21 are aligned, and then the TCP suction head 5 is moved in the −Z direction, and the external connection terminal 22 is connected to the external connection terminal 23. Abut. Then, the anisotropic conductive adhesive tape 25 provided on the external connection terminal 22 allows the external connection terminal 22 and the external connection terminal 23 to be accurately connected and fixed to each other.

When the work of fixing the connection between the external connection terminals 22 and 23 is completed, the TCP2 by the TCP suction head 5 is
After releasing the suction holding of No. 1, the TCP suction head 5 is sequentially moved in the + Z direction and the + Y direction. This gives T
One cycle of the CP21 alignment mounting process is completed.

After the above-mentioned alignment operation is completed, a work for confirming whether or not the alignment is correctly performed is performed if necessary. That is, the LCD transport table 4 is moved in the + X direction (may be the −X direction), and the alignment mark recognition unit 3 determines whether or not the alignment marks 24, 24 are aligned at one alignment mark arrangement position. Check. In addition, LCD
The transport table 4 is moved in the X direction, the opposite direction to the above, and it is determined whether the two alignment marks 24, 24 are aligned at the other alignment mark arrangement position.
It is confirmed by the alignment mark recognition unit 3.

In this alignment mounting apparatus 1,
Since the position of the alignment mark 24 is recognized in the state where the TCP 21 is brought into contact with the posture correcting section 7, even if the width of the TCP suction head 5 is slightly smaller than that of the TCP 21,
It does not hinder the alignment mark position recognition work. Therefore, according to the size of TCP21, TCP
It is not necessary to replace the suction head 5, and one TCP suction head 5 can handle TCPs 21 of various sizes.

Further, in the above embodiment, the alignment mark leaking means is constituted by forming the entire posture correcting section 7 from a transparent body, but only the portion of the TCP 21 that comes into contact with the alignment mark 24 is formed from a transparent body. Even so, the alignment mark leakage means can be configured. Further, the alignment mark leaking means can be formed by forming a hole penetrating in the thickness direction at a portion of the TCP 21 that comes into contact with the alignment mark 24.

[0036]

As described above, according to the present invention, since the position of the alignment mark is recognized in the state where the tape carrier package is brought into contact with the posture correcting portion, the recognition accuracy of the alignment mark is improved, and the tape is improved. The carrier package can be accurately connected to the connected member, and the yield can be improved accordingly.

Further, since the recognition accuracy of the alignment mark is improved, the number of position fine adjustment work performed at the time of connection work is reduced, and the work time can be shortened accordingly.

Furthermore, since the accuracy of recognizing the alignment mark is improved, it is possible to accurately connect the tape carrier package in which the external connection terminals are formed with a finer pitch than the conventional one. It was

Furthermore, since the position of the alignment mark is recognized in the state where the tape carrier package is brought into contact with the posture correcting portion, the position recognition work is hindered even if the tape carrier package holding portion is slightly smaller than the tape carrier package. Never come. Therefore, one tape carrier package holding portion can handle a plurality of tape carrier packages of different sizes, and the equipment can be simplified accordingly.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of an alignment mounting apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of a conventional alignment mounting apparatus.

FIG. 3 is an external perspective view of a tape carrier package.

FIG. 4 is a diagram showing a state of a tape carrier package during an alignment operation.

[Explanation of symbols]

 3 Alignment mark recognition unit 4 LCD transport table 5 TCP suction head 7 Posture correction unit 8 Posture correction surface

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Miwa Matsui 4-133, Atobe Honmachi, Yao-shi, Osaka Prefecture Sharp Manufacturing Systems Co., Ltd.

Claims (5)

[Claims] 1. The position of an alignment mark of a tape carrier package held by one of a pair of holding portions facing each other and the position of an alignment mark of a connected member held by the other are recognized, and then both of the two are held. A method for aligning and mounting both alignment marks by moving a holding part relative to each other to connect and fix the tape carrier package to a member to be connected, which is the position of the alignment mark of the tape carrier package. An alignment mounting method for a tape carrier package, characterized in that the recognition is performed in a state where the tape carrier package is brought into contact with a posture correcting surface and the posture is corrected. 2. The position recognition of the tape carrier package is performed by forming the posture correcting surface on a transparent body and capturing an alignment mark image of the tape carrier package that passes through the transparent body and performing image processing. An alignment mounting method for a tape carrier package according to claim 1, wherein: 3. An alignment mark recognition unit for recognizing the position of each alignment mark by capturing and processing an image of the alignment mark of the tape carrier package and the alignment mark of the connected member, and holding the connected member. At the same time, a connected member holding portion provided outside the alignment mark recognizing portion and capable of advancing and retreating with respect to the alignment mark photographing area of the alignment mark recognizing portion, and holding the tape carrier package, It is provided further outward than the connection member holding portion and is capable of moving forward and backward with respect to the alignment mark photographing area, and when the alignment mark photographing area is advanced, based on the alignment mark measurement result of the tape carrier package by the alignment mark recognition portion, Cover A tape carrier package holding portion that moves relative to the connecting member holding portion; and a posture correction portion that is provided inward of the tape carrier package holding portion and is capable of moving forward and backward with respect to the alignment mark photographing area. The posture correcting unit corrects the posture of the tape carrier package by sandwiching the tape carrier package between the posture correcting unit and the tape carrier package holding unit that has simultaneously advanced when the posture correcting unit advances to the alignment mark photographing area. An apparatus for mounting a tape carrier package, comprising: a correction surface; and an alignment mark leaking unit that leaks an alignment mark image of the sandwiched tape carrier package to an alignment mark recognition unit side. 4. The tape carrier package mounting device according to claim 3, wherein the connected member holding portion and the posture correcting portion are integrally provided. 5. The tape carrier package mounting device according to claim 3, wherein the alignment mark leakage unit is configured by forming the posture correcting unit from a transparent body.