A new TFT-LCD panel with air-bridge type gate to data line inter-crossing has been proposed and its characteristics have been measured. The proposed structure has air-gap between gate and data line inter-crossing. This air-bridge TFT-LCD panel has very small capacitance between gate and data line. The new panes structure achieves 9 times fast signal propagation compared with conventional panel, which enables to have enough design margin for 20-inch diagonal and larger size UXGA panel. We have examined thermal and mechanical durability of new panel to verify applicability for commercial AMLCD production. After TEOS and polyimide passivation, this panel withstood a thermal stress at $250^{circ}C$ and a mechanical stress during the rubbing process.