Nested Touch Panel Electrodes for Higher Coupling Capacitance

The patent implements nested electrode patterns where first electrode patterns are disposed in openings of the electrode line, and second electrode patterns are disposed in openings of the first electrode patterns. This nested configuration increases the coupling capacitance between electrodes by creating multiple capacitive coupling interfaces at different hierarchical levels, thereby improving touch sensing quality without requiring additional intersecting electrode lines.

The patent transitions from a traditional two-dimensional intersecting electrode array to a multi-dimensional nested electrode structure. By adding electrode patterns in openings along the electrode line direction (first direction) and subsequent electrode patterns in openings of the first electrode patterns, the design creates additional capacitive coupling dimensions, effectively increasing coupling capacitance beyond the conventional orthogonal intersection approach.

The patent segments the electrode structure into distinct functional components: electrode lines extending in a second direction, first electrode patterns disposed in openings of the electrode lines, second electrode patterns disposed in openings of the first electrode patterns, and connecting lines for electrical connection. This segmentation allows each component to be optimized independently for its specific function while collectively achieving enhanced sensitivity through increased coupling capacitance.

The patent introduces connecting lines as intermediary elements that electrically connect the nested electrode patterns to the electrode line and external circuits. These connecting lines serve as mediators that facilitate signal transmission while allowing the nested electrode patterns to be positioned optimally for maximizing coupling capacitance, thus decoupling the sensitivity enhancement function from the electrical connection function.