Integrated Die Ejector Structure to Minimize Assembly Tolerances
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Solution Overview
Problem
Conventional die ejectors require separate fabrication of units, leading to increased costs and dimensional and shape tolerance deviations during assembly.
Innovation Solution
An integrated die ejector design where the ejector module is provided on an upper portion of a vertical driving unit, integrating units related to driving ejecting blocks into a single structure, reducing fabrication costs and minimizing tolerance deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate units are used for the first unit and second unit, then individual fabrication of blocks is possible, but fabrication costs increase and dimensional and shape tolerance deviations occur on assembly surfaces
Solution Approach 1:
The patent merges the first unit and second unit into a single integrated ejector body, eliminating the need for separate fabrication of blocks. The ejector body is formed as one piece with multiple ejector blocks integrated into it, thereby reducing fabrication costs and minimizing dimensional and shape tolerance deviations on assembly surfaces.
Solution Approach 2:
The integrated ejector body serves multiple functions simultaneously: it acts as both the first unit (with ejector blocks for pushing the dicing tape) and the second unit (with lifting blocks for supporting the semiconductor chip). This multi-functionality eliminates the need for separate units while maintaining all required capabilities.
2Adaptability or versatility
If separate units are used for the first unit and second unit, then modular design is achieved, but fabrication costs increase due to individual fabrication requirements
Solution Approach 1:
The patent combines the functional elements of both units into a single ejector body that can be fabricated as one piece. This integration reduces the number of separate components that need to be manufactured and assembled, thereby lowering fabrication costs while maintaining the adaptability of the design through the integrated multi-functional structure.
3Ease of manufacture
If separate units are used, then independent fabrication of each unit is possible, but assembly complexity and tolerance accumulation increase
Solution Approach 1:
The patent merges the first and second units into a single integrated ejector body, eliminating the need for assembly between separate units. This reduces assembly complexity and prevents tolerance accumulation at interfaces, while the integrated design maintains the capability for independent fabrication of the entire ejector assembly.
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
The integrated design reduces fabrication costs and minimizes tolerance deviations by integrating the ejector module with the vertical driving unit, ensuring precise and cost-effective separation of semiconductor chips from dicing tape.
Implementation Method 1
holding the dicing tape T by suction
Data Source
AI summary
The present disclosure relates to a die ejector, which separates a pickup-target chip from dicing tape, and more specifically, to a die ejector in which an ejector module and a vertical driving component are vertically integrated. The die ejector may include a plurality of ejecting blocks each including a contact portion provided on an upper end of the ejecting block and configured to come into contact with dicing tape, and a lifting plate provided on a lower end of the ejecting block, an ejector module including an ejector housing in which the ejecting blocks are installed, and a vertical driving unit including a plurality of vertical driving components configured to independently move the respective ejecting blocks upward or downward. The ejector module may be provided on an upper portion of the vertical driving unit, and the vertical driving unit may further include a seating portion on which the lifting plate of each of the ejecting blocks is seated.