[Study of LED chip spectrum acquisition system based on CPLD]
Wei Shi1, Da-Bing Zhou, Zhan-Min Dong
1School of Mechanical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China. yanstone8697@yahoo.com.cn
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|May 26, 2010
Summary
This study presents a new spectrum acquisition system for light emitting diode (LED) chip manufacturing. The system uses a complex programmable logic device (CPLD) for precise and efficient LED chip spectrum inspection.
Area of Science:
- Optoelectronics
- Solid-state lighting
- Semiconductor device characterization
Context:
- LED chip manufacturing requires precise spectrum inspection for quality control.
- Existing methods may lack efficiency or precision for scaled production.
- Advanced signal processing and hardware integration are crucial for accurate spectral analysis.
Purpose:
- To develop a novel spectrum acquisition system for LED chip inspection.
- To leverage Complex Programmable Logic Devices (CPLDs) for enhanced control and timing.
- To improve the accuracy and efficiency of spectral characteristic measurement in LED manufacturing.
Summary:
- A spectrum acquisition system based on CPLD is proposed for LED chip manufacturing.
- The system utilizes a raster monochromator and linear CCD for spectrum energy distribution analysis.
- CPLD controls timing, signal modulation, conversion, storage, and data transmission for high-precision inspection.
Impact:
- Enables simpler and faster LED chip spectrum inspection.
- Meets the precision requirements for scaled LED chip manufacturing.
- Contributes to improved quality control and performance standardization in the LED industry.
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