"T"-shaped electrodes divided in each discharge cell were designed for high luminance efficiency and high definition Co-planner type AC-PDPs. A 1.2lm/W of luminance efficiency for 40inch -VGA panel and a 1.0lm/W for 50inch-XGA wide panel were realized with this electrodes. In our discharge cell structure, 0.03mm of maximum tolerance for panel assembling process was needed, and accomplished for manufacturing process.