A pixel circuit with reduced switching leakage for an organic light-emitting diode

作     者：王欢 王志功 冯军 李文渊 王蓉 苗澎 

作者机构：Institute of RF-&OE-ICsSoutheast University 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2012年第33卷第12期

页      面：81-85页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：pixel OLED leakage CMOS 

摘      要：This paper presents a pixel circuit with reduced switching leakage for OLED microdisplays. A self- referenced feedback loop is designed to track the node voltages for leakage reduction during the holding period. A longer holding time using a smaller storage capacitor can be achieved using the leakage reduction technique. An experimental system based on a 60 ~ 80 pixel matrix is fabricated in a 0.35μm CMOS process. The area of the pixel circuit is only 15 × 1 5 μ2. According to the measured results, the pixel circuit achieves a holding time of longer than 500 ms and the system exhibits a satisfied accuracy and linearity within a pixel current range from 100 pA to 3 nA.