28.2: Invited Paper: SLS Technology for High Performance Poly-Si TFTs and Its Application to Advanced LCD and SOG

Abstract

SLS crystallization and CMOS LTPS process have been developed for high performance and uniform characteristics. By strictly optimizing SLS optics in conventional 2 shot SLS process, threshold voltage variation of 720 pixel TFTs in 2.2‐inch QVGA panel (240×RGB) was remarkably decreased from 1.89 V to 0.56 V of 3sigma value. Mobility of the channel doped NTFT and PTFT for circuits were 146 and 38 cm2/Vs, respectively. Functional unit circuits for SOG were also fabricated and properly operated.