发光学报2011，Vol.32Issue(10)：1051-1056,6.DOI:10.3788/fgxb20113210.1051
电极结构对AlGaInP-LED阵列电流分布的影响
Effects of Electrode Structure on The Current Distribution of AlGaInP-LED Array
摘要
Abstract
An array of 320 × 240 micro-LED is designed based on AlGalnP epitaxial wafer. The pixel size is 100 μm × 100 μm. The optical properties of LED array are affected by the current crowding effect, which is a universal problem in LED array. By simulating the active layer current distribution, effects of some factors including electrode structure, width of electrode and distance between electrodes on the current distribution of LED array are studied. The tri-strip electrode is proposed as an optimized structure of the top electrode. Considering some important details such as the light shading effect, the tri-strip electrode is the best electrode shape comparing with one-strip electrode and bi-strip electrode. The optimized electrode leads to the more uniform current spreading. The uniform lighting area of active layer increase 65. 02% and 25. 63% than that one strip electrode and bi-strip electrode, respectively. The light emission efficiency of the micro-LED array can be improved.关键词
电极结构/A1GaInP-LED/电流分布/三条形电极Key words
electrode structure/ AlGaInP-LED/ current distribution/ tri-strip electrode分类
信息技术与安全科学引用本文复制引用
尹悦,梁静秋,梁中翥,王维彪..电极结构对AlGaInP-LED阵列电流分布的影响[J].发光学报,2011,32(10):1051-1056,6.基金项目
吉林省科技发展项目(20100351)资助项目 （20100351）
