Embossed Tape Packaging for TAB Tapes
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Solution Overview
Problem
Conventional spacer tapes fail to achieve the desired length of TAB tapes during shipping and transportation while ensuring sufficient protection, leading to increased costs, storage space requirements, and decreased productivity due to the need for larger reels and inadequate protection of semiconductor chips.
Innovation Solution
A semiconductor apparatus packaging structure that uses an electroconductive embossed tape with protruding parts on one surface, overlapping with the semiconductor chip surface, and a conductive reel, with a total thickness between 0.4mm and 1.1mm, and a surface resistance of 10^6 to 10^9Ω, to securely package and transport TAB tapes up to 80m on a standard-sized reel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional spacer tape with embossed parts on both surfaces is used to protect the TAB tape, then the TAB tape surface is protected, but the reel size increases and productivity decreases
Solution Approach 1:
The embossed parts are provided only on one surface of the spacer tape rather than both surfaces, creating an asymmetric structure that reduces the total thickness and allows winding on standard-sized reels while still providing adequate protection for the TAB tape surface
2Productivity
If the TAB tape length is increased to achieve higher productivity, then productivity improves, but the reel size must be increased
Solution Approach 1:
The total thickness of the spacer tape is reduced by providing embossed parts on only one surface, which changes the physical parameters of the packaging structure and enables longer TAB tapes to be wound on standard-sized reels without increasing reel dimensions
3Length of moving object
If a larger reel is used to accommodate longer TAB tapes, then the TAB tape length increases, but capital investment and transportation cost increase
Solution Approach 1:
The spacer tape is designed as a thin film structure with embossed parts on only one surface, reducing the overall thickness and enabling longer TAB tapes to be accommodated on standard-sized reels without requiring larger or heavier reel structures
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for the secure packaging and transportation of TAB tapes up to twice the conventional length on standard-sized reels, reducing storage and shipping costs, minimizing static damage, and preventing dust-induced defects, while maintaining effective cushioning and protection.
Implementation Method 1
an embossed tape which is electroconductive and has protruding parts which are sequentially provided on a first surface of and in a longitudinal direction of a tape-like electroconductive film
Data Source
AI summary
A TAB tape (100) packaging structure in which (i) the TAB tape (100) including a plurality of semiconductor chips (103) which are fixed, on a film (101) on which wiring patterns are repeatedly provided and (ii) an embossed tape (200) which is electroconductive and has embossed parts (202) which are sequentially provided on a first surface of and in a longitudinal direction of a film (201) are wound on a reel which is electroconductive is arranged such that the TAB tape (100) and the embossed tape (200) are wound on the reel, while (i) a first surface of the film (101) on which surface the plurality of semiconductor chips (103) are fixed and (ii) the first surface of the film (201) on which surface the embossed parts (202) protrude are overlapping and facing each other, and the embossed tape (200) has a total thickness of not less than (t+0.4) mm and not more than 1.1 mm in a case where each of the plurality of semiconductor chips (103) has a thickness of t (0.2≦t≦0.625) mm and the film (201) has a substantial thickness of 0.125 mm. This realizes packaging of a TAB tape in a desired winding length while sufficiently securing protection of the TAB tape during shipping and transportation.