Optical Semiconductor Capping Search Strategy
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Solution Overview
Problem
Conventional capping systems for optical semiconductor devices face inefficiencies in searching time and complexity due to non-normal distribution of detected positions and the need for varied control programs based on position distributions, especially when the initial search starting point differs from the distribution center.
Innovation Solution
A capping system that includes a moving portion for the stem, a camera for image capture, a detector, and a searching action controller that performs radial and outward searches from an optimal search starting point, adjusting the search starting point based on the distribution center of detected positions and prioritizing search orientations by frequency, allowing for a common control program across multiple operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If spiral locus searching method is used, then searching coverage is achieved, but searching time is extended when distribution is non-concentric
Solution Approach 1:
The patent applies dynamics by making the search pattern adaptive rather than fixed. The searching action controller dynamically adjusts the search starting point and search radius based on the detected position distribution characteristics. When the distribution is non-concentric or the initial starting point is far from the distribution center, the system automatically modifies the search parameters to optimize the search path, thereby reducing searching time while maintaining comprehensive coverage.
Solution Approach 2:
The patent changes the search parameters (starting point coordinates and search radius) based on the detected position distribution. By analyzing the distribution characteristics of detected positions and comparing them with the material population distribution, the system adjusts the search parameters to match the actual distribution pattern, which significantly reduces searching time compared to using a fixed spiral locus method.
2Measurement precision
If varied searching operations are implemented for different position distributions, then searching accuracy is improved, but control program complexity increases
Solution Approach 1:
The patent implements a universal searching action controller that can handle multiple search patterns and distribution types through a single integrated control program. The controller automatically identifies the distribution characteristics and selects the appropriate search strategy, eliminating the need for separate control programs for different searching operations. This multi-functional approach maintains high searching accuracy while reducing control program complexity.
Solution Approach 2:
The system uses feedback from the detected position distribution to automatically adjust the search strategy. The searching action controller continuously monitors the distribution characteristics and compares them with the material population distribution, then adjusts the search parameters accordingly. This feedback mechanism enables the system to adapt to different distribution patterns without requiring complex pre-programmed search routines for each scenario.
Data Source
AI summary
A capping system includes: a moving portion moving a stem, on which an optical semiconductor element is mounted, horizontally; a fixer fixing a cap having a window, on the stem; a camera taking an image of the cap and the stem from above the cap and the stem; a detector detecting whether the optical semiconductor element is present within a visual field of the camera; and a searching action controller controlling the moving portion to move the stem so the detector searches the optical semiconductor element. The searching action controller causes searching radially and outwardly from a search starting point.