JPH1174316A - Tab tape spacer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent carbon black from being generated as conductive foreign matters from an end face, by forming a coating layer of a predetermined thickness on the end face. SOLUTION: A TAB tape spacer 1 is formed of a PVC tape 3 with carbon black 4 kneaded, and an insulator such as PVC or PET is blown against an end face 5 to form a coating layer of a predetermined thickness. In addition, swells 2 are formed by embossing at a predetermined distance in a lengthwise direction along both edges on both faces of the spacer 1 to improve spacer cushioning function. Thus, generation of carbon black from the end face as conductive foreign matters can be suppressed, and short-circuiting of copper foil pattern wires, entrance of the conductive foreign matters into a semiconductor chip or the like can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a TAB tape spacer, and more particularly to a TAB tape spacer in which carbon black is kneaded to prevent static electricity from being charged.

[0002]

2. Description of the Related Art As a conventional TAB tape spacer,
For example, there is one disclosed in Japanese Utility Model Laid-Open No. 4-25237. When this TAB tape spacer is wound around a reel with a copper foil pattern-equipped flexible tape such as a TAB tape, the TAB tape spacer functions as a spacer of the copper foil pattern-equipped flexible tape by being wound together with the tape. A bulge based on embossing is formed on both sides to improve the spacer function, and an antistatic treatment is performed on the surface to prevent electrification due to static electricity.

FIGS. 2 and 3 show another conventional TAB tape spacer 1, which is formed by kneading carbon black 4 into a PVC tape 3 and which is formed by embossing along both edges on both sides. Are formed at predetermined intervals. Although the TAB tape spacer 1 is shown in FIG. 2 as having a finite length, it has a length sufficient to be wound on a reel, and has a width W substantially equal to that of the TAB tape by slit cutting. Is cut off.

According to this TAB tape spacer 1,
Since the carbon black 4 is made conductive by kneading, dust is prevented from adhering due to static electricity, and a TCP (Tape Carrier P) mounted with a semiconductor chip is mounted.
When it is used as a spacer for the package, the semiconductor chip is prevented from being electrostatically damaged in addition to preventing dust from adhering.

[0005]

However, the conventional TAB
According to the tape spacer, since the end face of the PVC tape is cut by the slit, the carbon black 4
May be exposed on the end face, become conductive foreign substances, enter the semiconductor chip, or short-circuit between the wirings of the copper foil pattern.

Accordingly, an object of the present invention is to provide a TAB tape spacer which does not generate carbon black as a conductive foreign matter from the end face even if it is made conductive by kneading carbon black.

[0007]

According to the present invention, in order to achieve the above object, a TAB tape spacer made of carbon black kneaded and made conductive is provided with a coating layer having a predetermined thickness formed on an end face. A spacer for a TAB tape is provided.

[0008]

FIG. 1 shows a TAB tape spacer according to an embodiment of the present invention. A TAB tape spacer 1 is formed by a PVC tape 3 into which carbon black 4 has been kneaded. Alternatively, a coating layer 6 having a thickness of 10 μm to 500 μm is formed by spraying an insulator such as PET. In order to improve the spacer cushioning function along both edges of both sides of the TAB tape spacer 1, bulging portions 2 formed by embossing are formed at predetermined intervals in the length direction.

Next, the TAB of the present invention having the following structure
A tape spacer was prepared as an example. (A) Width: 35 mm (b) Length: 10 m (c) Thickness of the coating layer 6: 100 μm

A TAB tape spacer having no coating layer was prepared as a comparative example.

When the Example and the Comparative Example were placed in a plastic tray and subjected to a sine wave vibration having a frequency of 5 Hz and an amplitude of 4 to 6 mm, the Comparative Example produced carbon black as conductive foreign matter in 5 minutes. No generation of conductive foreign matter was observed even after 60 minutes. When the thickness of the coating layer 6 is 10 μm or less, a portion through which the carbon black 4 passes is generated locally.
May deteriorate the winding characteristics.

[0012]

As described above, according to the TAB tape spacer of the present invention, since the coating layer is provided on the end face, the generation of carbon black as conductive foreign matter from the end face can be suppressed, and the copper foil pattern can be prevented. It is possible to prevent short-circuiting of wiring, entry of conductive foreign matter into the semiconductor chip, and the like.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a TAB tape spacer according to the present invention.

FIG. 2 is a perspective view showing a conventional TAB tape spacer.

FIG. 3 is a sectional view showing a conventional TAB tape spacer.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 spacer for TAB tape 2 bulge 3 PVC tape 4 carbon black 5 end face 6 coating layer

Claims (3)

[Claims] 1. A TAB tape spacer, which is made conductive by kneading carbon black, comprising a coating layer having a predetermined thickness formed on an end face thereof. 2. The coating layer is made of PVC or PET.
2. The TAB tape spacer according to claim 1, wherein said spacer is formed by spraying an insulator such as said material onto said end face. 3. The coating layer has a thickness of 10 μm to 50 μm.
The TAB tape spacer according to claim 1, wherein the spacer has a thickness of 0 µm.