CAJ | 학술논문

目前对交流发光二极管（ AC-LED）的结温测试少有研究。将一种新的电学测试方法---阈值电压法应用到AC-LED结温测试当中，并与传统的峰值波长法进行对比。两种测试方法的结温测试结果相差在4℃之内，有较好的一致性。经过分析，当参考阈值电流为1mA时，阈值电压法的测试误差为±2.5℃，峰值波长法的测试误差为±6℃。阈值电压法测试结果更为精确，应用范围更广，更适用于工业测试。
목전대교류발광이겁관（ AC-LED）적결온측시소유연구。장일충신적전학측시방법---역치전압법응용도AC-LED결온측시당중，병여전통적봉치파장법진행대비。량충측시방법적결온측시결과상차재4℃지내，유교호적일치성。경과분석，당삼고역치전류위1mA시，역치전압법적측시오차위±2.5℃，봉치파장법적측시오차위±6℃。역치전압법측시결과경위정학，응용범위경엄，경괄용우공업측시。
At present , the measurement techniques of the junction temperatures of light emitting diodes ( LEDs) are developed for AC-LED.In the present work , a novel approach of threshold voltage method is proposed for junction temperature characterization of AC-LEDs.The new method was tested , and results of which were compared with the traditional peak wavelength method , showing a good agreement within 4℃. Further analysis suggested that the error of the threshold voltage method can be narrowed down to ±2.5 ℃when the reference current is chosen as ~1 mA. It is concluded that the method of threshold voltage is accurate and simple to implement , making it highly suitable for determining the junction temperatures of AC-LEDs in industry .