CAJ | 학술논문

发光二极管(light emitting diode,LED)芯片的光谱检测是LED芯片规模化制造中的一项关键技术.根据光谱测量原理,针对LED芯片光谱测量应用的要求,文章研究了基于复杂可编程逻辑器件(complex programmable logic device,CPLD)的LED芯片光潜采集系统.以CPLD为主芯片,为线阵电荷耦合器件(charge coupled device,CCD)提供工作时序信号,同时控制信号调理、转换、传输模块中的采样率和数据的存储与传输.采用光栅单色仪作为分光器件,线阵CCD作为光电转换器什,检测LED芯片的相对光谱能量分布曲线,同时计算LED芯片光学特性的光谱参数.基于CPLD的LED芯片光谱采集系统简单、快速,同时能达到LED芯片光谱检测精度的要求.
발광이겁관(light emitting diode,LED)심편적광보검측시LED심편규모화제조중적일항관건기술.근거광보측량원리,침대LED심편광보측량응용적요구,문장연구료기우복잡가편정라집기건(complex programmable logic device,CPLD)적LED심편광잠채집계통.이CPLD위주심편,위선진전하우합기건(charge coupled device,CCD)제공공작시서신호,동시공제신호조리、전환、전수모괴중적채양솔화수거적존저여전수.채용광책단색의작위분광기건,선진CCD작위광전전환기십,검측LED심편적상대광보능량분포곡선,동시계산LED심편광학특성적광보삼수.기우CPLD적LED심편광보채집계통간단、쾌속,동시능체도LED심편광보검측정도적요구.
The light emitting diode (LED) chip spectrum inspection is a key technology in LED chip scaled manufacturing.According to the principle of spectrum inspection and aiming at the demand of applications of LED chip spectrum inspection,the present paper studies the spectrum acquisition system based on complex programmable logic device (CPLD).The CPLD,the main chip,provides the working timing signal to the linear charge coupled device (CCD) and controls the signal modulating,conversion and storage,and transmission of sampling rate and data in transfer module.The system adopts raster monochromator as prismatic parts of apparatus and linear CCD as photoelectricity conversion parts to inspect the opposite spectrum energy distributing curve,and meanwhile calculate the spectrum parameter of LED chip photics characteristic.Based on the CPLD,the LED chip spectrum acquisition system with the virtues of simplicity and celerity satisfies the precision request of LED chip spectrum inspection.