Flexible microelectronics technology featuring low-temperature polysilicon (LTPS) TFT and surface free technology by laser annealing andablation (SUFTLAR) is expected to become a platform for developing thin, flexible and low-cost display devices. LTPS TFTs are good for realizing large area displays and integrated circuits at lower cost. A drawback of LTPS TFTs, however, is that they have substantial deviations in characteristics, which are caused by deviations mainly in crystal grain size and thickness of silicon-oxide. Until now, these deviations were considered to be beyond the capability of synchronous circuit design, especially for large-scale circuits such as microprocessors driven by global clocking.