This study reports the wafer-scale integration of two-dimensional (2D) perovskite oxides, specifically Ca₂Nb₂O₁₀, using a charge-assisted oriented assembly film-formation (COAF) process. The COAF process allows for the large-scale, homogeneous preparation of highly ordered nanosheet films, overcoming the harsh synthesis conditions and defect chemistry that have previously limited the performance and large-scale integration of 2D perovskite oxides. The optimized film structure, characterized by shallow-trap dominance, results in a significant improvement in photoresponse speed and high photosensitivity compared to traditional disordered films. An ultra-flexible 256-pixel device array demonstrates the versatility of this integration strategy, achieving efficient motion trajectory recognition with an accuracy of over 99.8%. The work provides a universal approach for large-scale integration of 2D perovskite oxides, paving the way for advanced optoelectronic applications.This study reports the wafer-scale integration of two-dimensional (2D) perovskite oxides, specifically Ca₂Nb₂O₁₀, using a charge-assisted oriented assembly film-formation (COAF) process. The COAF process allows for the large-scale, homogeneous preparation of highly ordered nanosheet films, overcoming the harsh synthesis conditions and defect chemistry that have previously limited the performance and large-scale integration of 2D perovskite oxides. The optimized film structure, characterized by shallow-trap dominance, results in a significant improvement in photoresponse speed and high photosensitivity compared to traditional disordered films. An ultra-flexible 256-pixel device array demonstrates the versatility of this integration strategy, achieving efficient motion trajectory recognition with an accuracy of over 99.8%. The work provides a universal approach for large-scale integration of 2D perovskite oxides, paving the way for advanced optoelectronic applications.