A novel cell placement algorithm for flexible TFT circuit with mechanical strain and temperature consideration

Abstract

Mobility is the key device parameter to affect circuit performance in flexible thin-film transistor (TFT) technologies, and it is very sensitive to the change of mechanical strain and temperature. However, existing algorithms only consider the impact of mechanical strain in cell placement of flexible TFT circuit. Without taking temperature into consideration, mobility may be dramatically decreased which leads to circuit performance degradation. This paper presents the first work to reduce the mobility influence caused by the change of both mechanical strain and temperature. Experimental results show that the proposed algorithms can effectively reduce the chip temperature and the influence caused by mobility variation.