JPH08148532A - Tab tester for correcting position of punch unit - Google Patents

Abstract

PURPOSE: To obtain a tab tester for correcting the position of a punch unit. CONSTITUTION: The image of a head TAB is picked up and a punch unit 2 is previously aligned to punch an identification hole through a TAB at a predetermined position thereof. The image data of the TAB at that time is stored, as an initial data, in the memory of a control unit. Images of second and subsequent TABs are then picked up by means of a camera 3A and the image data thus picked up is compared with the initial data. Subsequently, a positional correction amount is commanded to a moving means for the punch unit 2 thus correcting the punching position automatically for the second and following TABs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a TAB test apparatus for correcting the position of a punch unit. TA
The B tester is connected to the IC tester, and punches holes for classification and identification in the TAB by the punch unit according to the test result of the IC tester. The present invention automatically corrects the position of the punch unit with respect to the TAB in such a TAB test apparatus.

[0002]

2. Description of the Related Art A TAB is one in which a lead of a conductor repeatedly formed on a tape-like film and a corresponding portion of an electrode of a semiconductor chip are superposed and joined by an appropriate means. The carrier tape that repeatedly forms such TAB is referred to as a TAB tape in the present invention.

Next, the structure of a TAB test apparatus according to the prior art will be described with reference to FIG. 1 in FIG. 3 is TAB tape, 3
B is a camera, 3D is a light source, 4 is an image processing unit, and 5 is a control unit. 6A is a supply reel, 6B is a storage reel, 6C and 6B are sprockets, 6E and 6F are pulleys, 6G and 6H are sprockets, 7 is a pusher, and 8 is a pusher.
Is a punch unit.

In FIG. 3, the sprocket 6C runs the TAB tape 1 sent from the supply reel 6A toward the pusher 7 side. The sprocket 6D runs the TAB tape 1 toward the accommodation reel 6B, and the accommodation reel 6B winds up the TAB tape 1. The pulley 6E fixes the center of rotation and is arranged between the sprockets 6C and 6G. The pulley 6F fixes the center of rotation and is arranged so as to be interposed between the sprocket 6H and the sprocket 6D. Pulley 6E ・ 6
F converts the traveling path of the TAB tape 1.

The sprocket 6G is provided on both wings of the pusher 7.
6H is arranged, sprocket 6G and sprocket 6H
Causes the TAB tape 1 to run synchronously. A probe card is arranged on the lower surface of the pusher 7, and the TAB tape 1 runs between the pusher 7 and the probe card. When the pusher 7 holds the TAB tape 1 and descends, the TAB contacts the probe card and connects to the probe card.
TAB is measured with a C tester.

The image pickup camera 3B is arranged at a position facing the pusher 7 and picks up an image of TAB by the light emitted from the light source 3D. The imaging camera 3B is connected to the image processing unit 4, and the image processing unit 4 uses the TA by the imaging camera 3B.
Image processing of B image data is performed. The image processing unit 4 is connected to the control unit 5, and the control unit 5 receives the image data.

When the image data is input to the control unit 5, the control unit 5 commands the pusher 7 to correct its position. In response to the command, the pusher 7 slightly moves the pusher 7 in the traveling direction of the TAB tape 1 or in the direction orthogonal to the traveling direction of the TAB tape 1 to bring the TAB into accurate contact with the probe card.

The punch unit 8 is arranged between the sprocket 6H and the pulley 6F, and the punch unit 8 punches a hole for classification and identification in the TAB according to the test result of the IC tester.

Next, the structure of the punch unit 8 will be described with reference to FIG. In FIG. 4, 8A is a punch, 8B is a cylinder, 8
C is a frame, 8D is a punch guide, and 8E is a punch die.

As shown in FIG. 4, the TAB tape 1 is index-fed between the punch guide 8D and the punch die 8E. The cylinder 8B is held by the frame 8C, and I
It is driven by the test results of the C tester. The punch 8A moves while being guided by the punch guide 8D. The frame 8C is held by the punch guide 8D, and the punch guide 8D is held by the punch die 8E. Punch 8A for punch die 8E
A punch hole is inserted.

[0011]

Due to the inspection process, the TAB may be inspected by the burn-in device before the TAB test device. TA with burn-in equipment
When inspecting B, the TAB tape is cut into a predetermined length. In this case, as shown in FIG. 5, the TAB tapes 1 cut into a predetermined length are connected by an adhesive tape 1D, and this TAB tape is used in the process of the TAB test apparatus.

In the TAB test apparatus shown in FIG. 3, the TAB tape having the joint shown in FIG. There is. Also, T
In some cases, it may not be possible to make an identification hole at a predetermined position on the TAB due to factors such as the bending of the AB tape itself and the feed error of the TAB testing device. In particular, if the TAB pattern is miniaturized and has a high density, the TAB pattern is damaged in the punch unit, so that the punch unit must be precisely aligned.

According to the present invention, the first TAB is imaged by an image pickup camera, and the image pickup data is stored as initial data.
The second and subsequent TABs compare and collate the image data of the image pickup camera with the initial data to correct the position of the punch unit.
The purpose is to provide an AB test device.

[0014]

In order to achieve this object, the present invention is a TAB test apparatus for making an identification hole in a measured TAB according to a measurement result, the TAB test apparatus comprising:
The punch unit 2 that slightly moves in the traveling direction of the AB tape 1 or slightly moves in the direction orthogonal to the traveling direction of the TAB tape 1, the camera 3A that images the TAB corresponding to the punch unit 2, and the image data from the camera 3A is received. An image processing unit 4 and a control unit 5 for inputting the image data of the image processing unit 4 are provided. The TAB at the beginning of the TAB tape 1 is imaged and the imaged data is stored in the control unit 5 as initial data. TAB after th
Is imaged and compared with the initial data, and the position of the punch unit 2 is corrected.

[0015]

According to the above-mentioned structure, the present invention is the first TA
The image of B is taken, and the punch unit 2 is preliminarily aligned so that the punch of the punch unit 2 makes an identification hole at a predetermined position of the TAB. The TAB image data at this time is stored in the memory in the control unit 5 as initial data.
If the second and subsequent TABs are imaged by the camera 3A, the imaged data at this time and the initial data are compared and collated, and the position correction amount is instructed to the moving means of the punch unit, the second and subsequent TABs are automatically TAB. The punching position of the punch can be corrected.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the construction of the TAB test apparatus according to the present invention will be described with reference to the embodiment of FIG. 1 is a punch unit, 3A is a camera, 3C is a light source, and others are shown in FIG.
Is the same as. That is, in FIG. 1, the punch unit 8 in FIG. 3 is replaced with the punch unit 2, and in FIG.
A and a light source 3C are added.

In FIG. 1, the supply reel 6A and the storage reel 6B have the same functions as in FIG.
Similarly, the sprockets 6C and 6D and the pulleys 6E and 6F also have the same functions as those in FIG. further,
The pusher 7, the light source 3D, and the camera 3B also have the same functions as in FIG.

In FIG. 1, the punch unit 2 is slightly moved in the traveling direction of the TAB tape 1 or is slightly moved in the direction orthogonal to the traveling direction of the TAB tape 1. Camera 3A and light source 3C
Is adjacent to the punch unit 2. The camera 3A is, for example, C
The camera 3A is an image pickup camera such as a CD, and the camera 3A is a light source 3C.
The image of the TAB corresponding to the punch unit 2 is captured by the emitted light.

The camera 3A is connected to the image processing unit 4, and the image processing unit 4 processes the TAB image data. The image data is sent to the control unit 5. The control unit 5 has a memory for storing the image data. Further, the control unit 5 commands the moving means of the punch unit 2.

Next, the structure of the punch unit 2 according to the embodiment will be described with reference to FIG. 2A is a punch, 2B is a cylinder, 2C is a frame, 2D is a punch guide, and 2E is a punch die. The punch unit 2 is constituted by reference numerals 2A to 2E. Further, 21 and 22 in FIG. 2 are motors, and 23 and 2
4 is a ball screw. The motor 21 and the ball screw 23 constitute a first moving means for moving the punch unit 2 in the traveling direction of the TAB tape 1. The motor 22 and the ball screw 24 constitute second moving means for moving the punch unit 2 in the direction orthogonal to the traveling direction of the TAB tape 1.

As shown in FIG. 2, the TAB tape 1 is index-fed between the punch guide 2D and the punch die 2E. The cylinder 2B is held by the frame 2C, and I
It is driven by the test results of the C tester. The punch 2A is guided and moved by the punch guide 2D. The frame 2C is held by the punch guide 2D, and the punch guide 2D is held by the punch die 2E. Punch 2A for punch die 2E
A punch hole is inserted. Cylinder 2B is punch 2
As the drive means A, a drive means such as an electromagnetic solenoid may be used instead of the air cylinder.

In FIG. 2, when the motor 21 is driven, the ball screw 23 connected to the rotation shaft of the motor 21 rotates, and the punch unit 2 is moved in the TAB traveling direction (X direction).
Move it to a minute. When the motor 22 is driven, the motor 2
The ball screw 24 connected to the rotating shaft of 2 rotates to slightly move the punch unit 2 in a direction (Y direction) orthogonal to the traveling direction of the TAB. If a pulse motor is used for the motors 21 and 22 and a gear reducer is connected to the motors 21 and 22, the punch unit 2 can be finely fed in the XY directions.

Next, the operation of FIG. 1 will be described. In Figure 1,
The first TAB is imaged by the camera 3A, and the punch unit 2
The punch unit 2 is preliminarily aligned visually or by a monitor TV so that the punch of FIG. The TAB image data at this time is stored in the memory in the control unit 5 as initial data. The initial position of the punch unit 2 is initialized.

In the second and subsequent TABs, an image of the TAB is picked up by the camera 3A, the image processing unit 4 receives the image data, and sends the image data to the control unit 5.

The control unit 5 compares and collates the stored initial data with the TAB image data corresponding to the punch unit 2. Next, the control unit 5 converts the result of the comparison and collation into a correction movement amount of the punch unit 2 to obtain a correction value, and commands the punch unit 2 to move in the X direction or the Y direction.

As described above, if the second and subsequent TABs are imaged and the position of the punch unit 2 is sequentially corrected, it is possible to automatically punch holes at accurate positions.

In FIG. 1, the TAB is located to the right of the punch unit 2.
Although the camera 3A for picking up the image is arranged, the punch unit 2
In order to image the TAB corresponding to, the camera 3A and the light source 3C may be arranged on the left side of the punch unit 2. In addition, the light source 3C shown in FIG.
A captures a transmission image of TAB, but if the usage environment of the TAB test apparatus is satisfied, the light source 3C is unnecessary.

The fixed punch unit shown in FIG. 4 has a TAB tape positioning accuracy of 0.5 mm or more due to the seam of the TAB tape, the deflection of the TAB tape itself, or the feed error of the TAB tester.

This invention is a camera with a maximum shape of 70 mm × 76 mm measured by a TAB tester and a camera of about 380,000 pixels (1/3 CC
Since the image is recognized in step D) and the correction data for positioning is processed, one pixel is about 0.015 mm square, and the positioning accuracy is 0.0
Obtained with a resolution of 15 mm. That is, it is possible to obtain a position accuracy 33 times higher than the conventional one.

[0030]

According to the present invention, the head TAB is imaged by the image pickup camera, and the image pickup data is stored as initial data.
The second and subsequent TABs correct the position of the punch unit by comparing and collating the image data of the image pickup camera with the initial data. Therefore, when punching holes in a mark area that has been made into a small space by making the TAB pattern finer and denser. To TA
It is possible to prevent the TAB pattern from being damaged due to the position shift of B.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a TAB test apparatus according to the present invention.

FIG. 2 is a configuration diagram of a punch unit according to the present invention.

FIG. 3 is a configuration diagram of a TAB test apparatus according to a conventional technique.

FIG. 4 is a configuration diagram of a punch unit according to a conventional technique.

FIG. 5 is an external view of a TAB tape having a seam.

[Explanation of symbols]

 1 TAB tape 2 punch unit 3A camera 3B camera 3C light source 3D light source 4 image processing unit 5 control unit 6A supply reel 6B storage reel 6C sprocket 6D sprocket 6E pulley 6F pulley 6G sprocket 6H sprocket 7 pusher

Claims (1)

[Claims] 1. A TAB test device for making an identification hole in the TAB according to the measurement result of the measured TAB, wherein the TAB tape (1) is slightly moved in the running direction or is orthogonal to the running direction of the TAB tape (1). A camera that captures images of the punch unit (2) that moves slightly to the side and the TAB corresponding to the punch unit (2)
(3A), an image processing unit (4) for receiving image data from the camera (3A), and a control unit (5) for inputting the image data of the image processing unit (4), and a TAB tape (1) The first TAB of the image is imaged, the imaged data is stored in the control unit (5) as initial data, the second and subsequent TABs are imaged, the initial data is compared and collated, and the position of the punch unit (2) is corrected. A TAB test device for correcting the position of a punch unit.