A method for defining edge boundaries of an image formed on a flat-panel radiographic detector. Provided by the invention are the seeds, plants and derivatives of the soybean variety 4812469. A first line disposed in the first direction among the lines intersects while overlapping with a second line disposed in the second direction among the lines or one or more electrodes on another layer, and the first line is divided to have a plurality of paths in at least one region in the overlapping region of the first line with the second line or the one or more electrodes.