Double Half-Cell Wafer Printing With Pre-Transfer Vision Alignment
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Solution Overview
Problem
Existing double half-cell printing processes are inefficient due to slow alignment calibration caused by the slow adjustment speed of the printing module, impacting overall printing efficiency.
Innovation Solution
A silicon wafer printer with left and right calibration modules that perform alignment and angular correction before transferring double half-cells to the turntable assembly, utilizing a calibration vision camera and motor-driven suction modules for precise positioning and angular adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the printing module performs alignment calibration after transferring double half-cells to the turntable assembly, then the alignment can be completed, but the slow adjustment speed of the printing module results in slower alignment calibration process and reduced printing efficiency
Solution Approach 1:
The patent performs alignment calibration of the double half-cells before transferring them to the turntable assembly. The left and right calibration modules determine the position and angle of the double half-cells in advance, so that when they are transferred to the turntable, the steel screen is already accurately aligned with them, eliminating the need for slow post-transfer alignment adjustments.
Solution Approach 2:
The patent replaces the mechanical adjustment system of the printing module with a vision-based calibration system. The calibration vision camera captures images of the double half-cells, and the calibration modules process these images to determine position and angle, substituting the slow mechanical adjustment process with faster optical measurement and computational alignment.
2Manufacturing precision
If the printing module performs subsequent alignment corrections, then alignment accuracy can be maintained, but the alignment time increases and printing efficiency decreases
Solution Approach 1:
The calibration modules determine the position and angle of the double half-cells before transfer, pre-aligning them with the steel screen. This preliminary alignment action ensures that when the half-cells are transferred to the turntable assembly, no subsequent alignment corrections are needed, thereby eliminating alignment time loss while maintaining accuracy.
Solution Approach 2:
The calibration vision camera provides visual feedback on the position and angle of the double half-cells. This feedback information is used by the calibration modules to make precise alignment adjustments before transfer, ensuring accuracy is achieved in the initial positioning rather than through iterative corrections afterward.
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
Significantly reduces alignment time and enhances printing efficiency by determining the position and angle of double half-cells through visual positioning, allowing for faster and more accurate alignment without subsequent steel screen corrections.
Implementation Method 1
a left suction module; The drive ends of the calibration cylinders connect downward to calibration bearings, with the two calibration bearings jointly connecting to a right suction module
Data Source
AI summary
The present invention discloses a silicon wafer printer for double half-cell printing, comprising a work platform, a turntable assembly, a front-end conveyor, a left calibration module, and a right calibration module. A calibration vision camera is mounted above the front-end conveyor's end. The left linear module connects to a left motor module and then a left suction module. The right linear module connects to a right motor module, two calibration cylinders, calibration bearings, and a right suction module. It uses visual positioning to determine double half-cells' position/angle, adjusts the right half-cell with the left as reference, shortens alignment time, adopts single-head front-to-back printing and a smaller indexing disc, boosting turntable printing efficiency.