We have developed a high-frame-rate LED screen. Conventional LED display architecture has a latency problem between LED lines. Latency problem becomes terrible when the screen size is enlarged. We propose a new architecture for a large LED screen. Our LED screen employs column-parallel architecture, where every LED line is controlled by a microcontroller and runs in parallel. Therefore latency is dependent of the number of lines. Furthermore, the LED lines are separated and can be installed in 3D shape.