Multi-Layer Fan-Out Data Lines for Narrow Bezel Displays

The patent transitions from a two-dimensional planar arrangement of data lines to a three-dimensional stacked configuration with at least three layers. This vertical stacking allows multiple data lines to be disposed in different layers, significantly increasing the number of data lines that can be accommodated while reducing the horizontal area occupied by the fan-out region, thus improving the screen-to-body ratio.

The patent implements a nested structure where multiple layers of data lines are stacked vertically, with each layer containing data lines that are electrically connected to corresponding data lines in adjacent layers through contact holes. This nesting approach allows dense packing of data lines in the vertical dimension while maintaining electrical connectivity, effectively increasing data line capacity without proportionally increasing the fan-out region area.

By arranging data lines in multiple vertical layers rather than spreading them horizontally in the same layer, the patent increases the vertical separation between adjacent data lines. This spatial separation in the vertical dimension reduces the parasitic capacitance coupling between neighboring data lines, thereby minimizing signal interference and improving data transmission precision while still accommodating a large number of data lines.

The patent segments the data line structure into multiple independent layers, with each layer containing a subset of data lines. This segmentation isolates the electromagnetic fields of different data lines into separate spatial zones, reducing mutual interference and parasitic capacitance effects, thus improving signal integrity and transmission precision for each individual data line.