Improvement of brightness uniformity by AC driving scheme for AMOLED display
Improvement of brightness uniformity by AC driving scheme for AMOLED display
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DOI：
10.1109/led.2004.837535
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发表时间：
2004-10
影响因子：
4.9
通讯作者：
Yen-Chung Lin;H. Shieh
中科院分区：
文献类型：
--
作者：
Yen-Chung Lin;H. Shieh
提出了一种交流电压驱动方案，可以改善有源矩阵有机发光二极管（AMOLED）显示器的亮度均匀性。通过使用电荷馈通机制和AC驱动电压，可以补偿由寄生电阻引起的电压降。采用低温多晶硅技术制作了分辨率为176/spl times/RGB/spl times/220的2.2英寸AMOLED显示屏，并对交流驱动方案的性能进行了评估。实验结果表明，亮度均匀性高于91.6%，实现了由交流驱动方案，相比之下，由直流驱动方案实现的74%。
We propose an AC voltage driving scheme which can improve the brightness uniformity of active-matrix organic light-emitting diode (AMOLED) displays. Through the use of a charge feed-through mechanism and an AC driving voltage, the voltage drop caused by the parasitic resistance can be compensated. A 2.2 in AMOLED panel with a resolution of 176/spl times/RGB/spl times/220 has been fabricated by low temperature polycrystalline silicon technology to evaluate the performance of the AC driving scheme. Experimental results show that a brightness uniformity of higher than 91.6%, achieved by the AC driving scheme, in contrast to that of 74% achieved by a DC driving scheme.