Display Input-Sensing Panel Multilayer Traces Cut Dead Space and Resistance

The patent applies dimensionality change by transitioning from a single-layer trace line structure to a multi-layer structure. Trace lines are arranged in different layers (first trace lines in a first layer, second trace lines in a second layer), allowing sensing electrodes to be connected through vertical stacking rather than horizontal routing. This resolves the contradiction by enabling increased sensing electrode density without proportionally increasing the peripheral dead space, as the multi-layer arrangement optimizes space utilization in the vertical dimension.

The patent employs composite materials by using different conductive materials for different layers of trace lines. Specifically, the first trace lines use a first conductive material while the second trace lines use a second conductive material, which may have different electrical properties. This composite approach allows optimization of the overall resistance by selecting materials with complementary characteristics for different routing paths, thereby reducing total resistance while maintaining the increased number of trace lines needed for higher sensing sensitivity.