Stability analysis of current programmed a-Si:H AMOLED pixel circuits
Stability analysis of current programmed a-Si:H AMOLED pixel circuits
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DOI：
10.1109/ted.2004.838452
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发表时间：
2004-11
影响因子：
3.1
通讯作者：
K. Sakariya;P. Servati;A. Nathan
中科院分区：
文献类型：
--
作者：
K. Sakariya;P. Servati;A. Nathan
在本文中，我们提出了基于自补偿电流镜像的像素电路，并分析了基本的稳定性问题，以提供对电路工作的更深入理解，以及薄膜晶体管偏置非理想性的影响，这可能导致像素驱动电流的长期（和逐渐）不稳定。该分析还为电路设计者提供了一种根据有机发光二极管的长期亮度衰减特性来调整像素驱动电流稳定性的方法。
In this paper, we present self-compensating current mirror-based pixel circuits, and analyze basic stability issues to provide a deeper understanding of circuit operation, and the impact of thin film transistor bias nonidealities, which can lead to the long-term (and gradual) instabilities in pixel drive current. The analysis also provides the circuit designer a means to tailor the pixel drive current stability to the long-term brightness degradation characteristics of the organic light-emitting diode.