0BB Silicon Wafer IV Alignment Mechanism for Double Half-Cells
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Solution Overview
Problem
The cancellation of the main grid line on the front side of silicon wafers complicates the detection of silicon wafer quality and yield, particularly in double half-cells, necessitating improved IV detection mechanisms.
Innovation Solution
An IV detection mechanism for 0BB silicon wafers featuring independent left and right detection modules with UVW correction alignment, including X-axis and Y-axis modules, gold and silver wire rows, and lifting supports, enabling precise alignment and electrical performance testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the main grid line is cancelled on the front side of silicon wafers, then the light absorption and power generation efficiency are improved, but the detection of silicon wafer quality and yield becomes difficult
Solution Approach 1:
The patent introduces an intermediary detection system with auxiliary grid lines and reference markers that mediate between the cancelled main grid line and the quality detection requirement. The auxiliary grid lines serve as intermediate reference structures that enable IV curve detection without requiring the main grid line, thus resolving the contradiction between eliminating the main grid line for efficiency and maintaining detection capability for quality control
2Measurement precision
If independent left and right detection modules are used for double half-cells, then the electrical performance detection accuracy is improved, but the device complexity increases
Solution Approach 1:
The detection mechanism is segmented into independent left and right detection modules, each equipped with its own UVW correction alignment assembly, gold wire row test frame, and silver row test frame. This segmentation allows each module to independently detect electrical performance of respective half-cells, improving measurement precision through dedicated detection paths while the modular design manages complexity through standardization
Solution Approach 2:
Both left and right detection modules use identical multi-functional test frames that can accommodate gold wires and silver rows, perform UVW correction alignment, and conduct IV detection. This universality allows the same structural components to serve multiple detection functions, improving accuracy through consistent measurement capabilities while managing device complexity through component reuse and standardization
Data Source
AI summary
The invention discloses an IV detection mechanism for 0BB silicon wafers, including two detection modules, both comprise a UVW base, a gold wire row test frame and a silver row test frame; the gold wire row test frame and the silver row test frame respectively move on the UVW base along the vertical direction; gold wires are installed on the gold wire row and silver rows are installed on the silver row test frame; the two detection modules move independently. In the IV inspection mechanism for 0BB silicon wafers, the double half-cells independently carry out 0BB IV inspection, so that both sides can independently lift up and down, and correction alignment can be performed in the UVW direction, so that the gold wires and silver rows are accurately aligned with the grid lines on the half-cell, the inspection efficiency is improved, and the productivity is increased.