Wafer Supply Device Producible Block Calculation
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Solution Overview
Problem
Existing techniques cannot accurately calculate the number of producible boards when multiple pellets with successive electrical characteristics need to be mounted, leading to incomplete boards due to component shortages during production.
Innovation Solution
A wafer supply device that includes a die information storage section, block information acquisition section, required block number acquisition section, and producible number calculation section to determine the number of producible blocks based on die rankings and mounting requirements, preventing incomplete boards by anticipating die shortages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of producible boards is calculated using existing techniques, then the calculation is simple, but the calculation is inaccurate when multiple pellets with successive electrical characteristics need to be mounted
Solution Approach 1:
The patent segments the calculation process into distinct functional sections: die information storage section stores die data by rank, block information acquisition section retrieves mounting requirements, and producible number calculation section performs the actual calculation. This segmentation allows accurate handling of successive electrical characteristics while maintaining manageable system complexity through modular design.
Solution Approach 2:
The die information storage section pre-stores the number of dies for each rank allocated to each die before production begins. This preliminary organization of data by rank enables the calculation section to accurately determine producible boards without complex real-time analysis, resolving the contradiction between accuracy and complexity.
2Productivity
If wafer production continues without exchange, then production efficiency is high, but incomplete boards are generated when components run out
Solution Approach 1:
The system performs preliminary calculation of the number of producible boards based on stored die information and block requirements before production starts. This allows operators to know in advance how many complete boards can be produced, enabling proactive wafer exchange planning that maintains high productivity while preventing incomplete boards.
Solution Approach 2:
The calculation system provides feedback information about the number of producible boards to operators before production begins. This feedback enables informed decision-making about when to exchange wafers, allowing continuous production without interruptions while ensuring complete boards are produced, thus resolving the contradiction between productivity and reliability.
Data Source
AI summary
A wafer supply device configured to supply a wafer divided into multiple dies to a supply position, the wafer supply device includes a die information storage section configured to store the number of dies for each rank allocated to each of the dies, a block information acquisition section configured to acquire a condition of dies to be mounted on a block provided on a board to be conveyed, a required block number acquisition section configured to acquire a required number of dies to be mounted on the block, and a producible number calculation section configured to calculate a number of blocks that can be produced based on a content stored in the die information storage section and a content acquired by the block information acquisition section and the required block number acquisition section.