JP2003270293A - Pucker smoothing mechanism for tape of tab handler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pucker smoothing mechanism for a tape (TAB) which smoothes deflections (puckers) generated in the transverse direction of the tape (TAB) and prevents a probe and a contact pad from getting out of position in a measuring portion, by causing the mechanism to have constitution to operate not only in the feeding-direction of the tape but also in the transverse direction of the tape (TAB) as a pucker smoothing mechanism for a tape (TAB). <P>SOLUTION: This is a pucker smoothing mechanism for a tape in a TAB (Tape Automated Bonding) handler which positions a device being on the tape 1 to a measuring position, with at least two tape feeding sprockets 2a, 2b. The pucker smoothing mechanism for a tape of the TAB handler comprises a pucker smoothing means 3, 4a, 4b, 4c, 4d for a tape which starts operation after the device being on the tape arrives near the measuring position, and performs pucker smoothing operation in the feeding direction of the tape and in the transverse direction of the tape. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a TAB (Tape Autom
A tape wrinkle extension mechanism for improving the contact rate between the probe and the contact pad in the measurement section of the handler.

[0002]

2. Description of the Related Art Packages (logic devices, etc.) to be measured are used for TCP (Tape Carrier Package) and COF (Chip on Chip).
The TAB handler is a device that handles (handles) the tape as it is attached to the tape. FIG. 4 shows an outline of a tape (TAB) transport path in the TAB handler. In FIG. 4, the tape (TAB) between the supply reel and the accommodation reel is a plurality of sprockets (11, 1).
3, 14, 16) and guide pulleys (12, 15) for bending the conveying path by 90 ° C. are shown. Further, reference numeral 19 is a pusher provided in the measuring portion, and a portion related to the present invention is between the sprockets 13 and 14 in FIG.

Tape (TAB) in a conventional TAB handler
An example of main components of the handling unit in the measuring unit will be described with reference to FIG. 3A is a plan view of the main components,
(B) is a side view of the main components. In FIG. 3, 1
Is a tape (TAB), 2a and 2b are sprockets, 3 is a pusher, and 5 is a tape clamper.

As shown in FIG. 3, the structure of the tape (TAB) handling part in the measuring part of the conventional TAB handler is such that the wrinkle extending action of the tape works only in the tape (TAB) feeding direction by the sprockets 2a and 2b. The operation is
When the tape (TAB) 1 is pitch-fed in the X direction by the sprockets 2a and 2b and it is detected by a detection means (not shown) that the tape (TAB) 1 has reached a predetermined measurement position, one of the sprockets 2b is reversed, and (TAB)
By stretching 1 in the X direction, the "deflection" in the X direction can be removed.

With the "deflection" (wrinkle) in the x direction removed, the pusher 3 descends and the tape (TAB) 1 is sandwiched and fixed by the tape clamper 5, and the device is brought into contact with the probe and the contact pad. Perform the measurement of.

[0006]

In the conventional structure, since the wrinkle-stretching mechanism for the tape (TAB) works only in the tape feeding direction, "deflection" may occur in the tape width direction (y direction). . This "bending" (wrinkling) in the width direction of the tape causes a planar error and causes a slight deviation between the positions of the probe and the contact pad, which causes a problem that accurate measurement cannot be performed.

The object (object) of the present invention is to provide a tape (TAB).
As a wrinkle extension mechanism, not only in the tape feeding direction,
"Bending" (crease) that occurs in the width direction of the tape (TAB) by making it work in the width direction of the tape (TAB)
It is an object of the present invention to provide a tape (TAB) wrinkle straightening mechanism that eliminates the occurrence of misalignment between the probe and the contact pad in the measuring section.

[0008]

In order to solve the above-mentioned problems, a tape wrinkle straightening mechanism in a TAB handler for positioning a device existing on the tape at a measurement position by at least two tape feeding sprockets. Then, the device existing on the tape is configured to include a wrinkle straightening device that starts wrinkling after the device reaches the vicinity of the measurement position and performs wrinkle straightening operation in the tape feeding direction and the width direction of the tape. (Claim 1)

Further, the wrinkle straightening means for the tape is
4 of the tape which is rotated in conjunction with the lowering operation of the pusher for sandwiching the tape and is located on the tape clamper.
It is configured to include at least four rollers that push the corners apart. (Claim 2) Further, the wrinkle straightening means of the tape is formed at a lower portion of the pusher and is provided for rotating the roller.
It is configured to include individual cam mechanisms. (Claim 3) Further, the wrinkle straightening means for the tape includes a spring for separating the roller from the tape when the pusher is not lowered. (Claim 4)

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an example of the main constituent parts of a handling part near a measuring part of a tape (TAB) in a TAB handler of the present invention will be described with reference to FIG. 1A is a plan view of the main constituent portion, and FIG. 1B is a side view of the main constituent portion. In FIG. 1, 1 is a tape (TAB), 2a and 2b
Is a sprocket, 3 is a pusher, 4a, 4b, 4c,
4d is a roller and 5 is a tape clamper.

The rollers (4a, 4b, 4c, 4d) are constructed so as to be movable in an oblique direction outside the tape (TAB) with respect to the feeding direction of the tape (TAB), as indicated by the arrow shown in FIG. ing. In addition, the rollers (4a, 4b, 4c,
4d) is configured to interlock with the lowering operation of the pusher 3.

When the tape (TAB) 1 is pitch-fed by the sprockets 2a and 2b to reach a predetermined measuring position by a detection means (not shown), the pusher 3 starts the descending operation. In this state, the tape (TAB) may have "deflection" (wrinkle) in the feeding direction (x direction) and the width direction (y direction).

In the present invention, the rollers (4a, 4b, 4c, 4d) are rotated in association with the descending operation of the pusher 3 after the operation of stretching the tape (TAB) 1 in the x direction is completed, and the tape (TAB) is rotated. By moving the tape diagonally outward in the width direction, as a result, the "deflection" (wrinkle) in the tape feeding direction (x direction) and width direction (y direction) can be removed at once.

Four rollers (4a, 4b, 4c, 4d)
Is fixed at a height not touching the tape (TAB) and lower than the pusher 3. In the pusher 3, the roller (4
a, 4b, 4c, 4d) is provided with a cam mechanism 3-1 which comes into contact with the lowering operation.

Next, the structure in which the rollers (4a, 4b, 4c, 4d) are rotated in conjunction with the lowering operation of the pusher 3 will be described with reference to FIG. In FIG. 2, 3 is a pusher, 4 is a roller, and 6 is a spring. In addition,
Although FIG. 2 shows the relationship with one roller, the four rollers (4a, 4b, 4c, 4d) have the same structure.

The roller 4 shown in FIG.
(Before moving down), the spring 6 holds the tape (TAB) in a position where it does not come into contact with the tape (TAB). When the tape (TAB) reaches the measurement position and the pusher 3 descends, the taper (TAB) comes into contact with the slanted engaging portion (cam mechanism) 3-1 provided on the pusher 3 to rotate, and comes into contact with the roller 4 due to the rotation. By moving the tape (TAB) diagonally outward in the width direction, as a result, the "deflection" in the feeding direction (x direction) and width direction (y direction) of the tape (TAB) can be removed.

In the present invention, the pusher 3 is lowered to remove the tape (TAB) 1 from the tape clamper 5 while removing not only the "deflection" in the x direction of the tape (TAB) but also the "deflection" in the y direction. It is possible to perform measurement of the device by accurately pinching the probe and the contact pad by sandwiching the probe with each other.

The above steps are organized as follows. With the sprockets 2a and 2b, tape (TA
B) Send 1. (Step S1) In this state, the rollers (4a, 4b4c, 4d) are free because they do not contact with anything. In conjunction with the lowering operation of the pusher 3, the rollers (4a,
4b, 4c, 4d) contacts the tape (TAB) and is sandwiched by the action of the tape clamper 5. (Step S2) Roller (4a, 4
b, 4c, 4d), and the tape (TAB) is pulled in the diagonally outward direction (diagonal direction) of the tape (TAB) by the frictional force caused by the rotation of each roller, resulting in the tape (TA).
Stretch B) in the tape feed direction (x) and width direction (y direction) all at once. (Step S3) As the pusher 3 descends, the tape (TAB) 1 is sandwiched and fixed by the tape clamper 4. (Step S4)

[0019]

According to the first aspect of the present invention, there is provided a tape wrinkle straightening mechanism in a TAB handler for positioning a device existing on the tape at a measurement position by at least two tape feeding sprockets. The tape feed direction is configured by including the tape wrinkle stretching means that starts the operation after the device existing on the tape reaches the vicinity of the measurement position and performs the wrinkle straightening operation in the tape feeding direction and the tape width direction. Not only does it also work in the width direction of the tape (TAB), the "deflection" (wrinkle) that occurs in the width direction of the tape (TAB) is eliminated, and the position of the probe and contact pad in the measurement part shifts. A tape (TAB) wrinkle straightening mechanism can be realized.

Further, in the invention described in claim 2, the wrinkle unfolding means of the tape is rotated in association with the lowering operation of the pusher for sandwiching the tape, and the four corners of the tape positioned on the tape clamper are moved. By including at least four rollers that perform the push-out operation, by interlocking with the downward movement of the pusher, not only the tape feeding direction but also the width direction of the tape (TAB) can be obtained. Deflection that occurs in the width direction of (TAB)
By eliminating wrinkles, it is possible to realize a tape (TAB) wrinkle straightening mechanism that does not cause displacement between the probe and the contact pad in the measurement section. Further, in the invention according to claim 3, the wrinkle straightening means for the tape includes four cam mechanisms for rotating the roller, which are formed under the pusher, so that It can be realized with a simple structure without a driving device. Further, in the invention according to claim 4, the wrinkle straightening means for the tape includes a spring for separating the roller from the tape when the pusher is not descending, so that the pusher does not descend. In some cases (when the tape (TAB) is fed), the roller does not contact the tape (TAB).

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a handling section (wrinkle straightening section) in a tape (TAB) measuring section in a TAB handler of the present invention.

FIG. 2 is a diagram showing a relationship between a pusher and a roller.

FIG. 3 is a diagram showing a configuration of a handling section (wrinkle straightening section) in a tape (TAB) measuring section in a conventional TAB handler.

FIG. 4 is a diagram schematically showing a tape (TAB) transport path in a TAB handler.

[Explanation of symbols]

1 tape (TAB) 2a, 2b sprockets 3 pushers 4a, 4b, 4c, 4d rollers 5 tape clamper 6 spring x Tape (TAB) feeding direction y Tape (TAB) width direction

Claims (4)

[Claims] 1. A wrinkle stretching mechanism for a tape in a TAB handler for positioning a device existing on the tape at a measurement position by at least two tape feeding sprockets, wherein the device existing on the tape is at the measurement position. A tape wrinkle straightening mechanism for a TAB handler, characterized in that it includes a wrinkle straightening means for starting wrinkling in the tape feeding direction and in the width direction of the tape which starts wrinkling after reaching the vicinity. 2. The wrinkle unfolding means for the tape is rotated in conjunction with the lowering operation of a pusher for sandwiching the tape, and is operable to spread out the four corners of the tape located on the tape clamper. The tape wrinkle unrolling mechanism of the TAB handler according to claim 1, further comprising a roller. 3. The wrinkle unfolding means for tape includes four cam mechanisms for rotating the roller, which are formed in a lower portion of the pusher.
Wrinkle unrolling mechanism for the TAB handler described in. 4. The tape of the TAB handler according to claim 3, wherein the wrinkle straightening means for the tape includes a spring for separating the roller from the tape when the pusher is not lowered. Wrinkle extension mechanism.