Capacitive Touch Panel Electrode Mesh Pitch Ratio

The patent applies asymmetry by making the average cell pitch of the second electrode (upper electrode) different from that of the first electrode (lower electrode). Specifically, the second electrode has a larger average cell pitch, which creates an asymmetric relationship between the two mesh layers. This asymmetric design allows the upper electrode to have larger openings for better electric field penetration and touch detection sensitivity, while the different pitch prevents regular interference patterns (moire) from forming between the two mesh layers, thus resolving the contradiction between detection accuracy and visual interference.

The patent resolves this contradiction by transitioning from a single-dimensional concern (electrode width) to a two-dimensional solution involving both electrode width and cell pitch. By increasing the average cell pitch of the second electrode, the patent creates larger openings that allow the electric field to penetrate more effectively, enhancing capacitance change detection sensitivity. Simultaneously, the mesh structure maintains sufficient electrode width to prevent disconnection and ensure reliability. This dimensional approach allows both detection sensitivity and electrode functionality to coexist.

The patent applies parameter changes by modifying the average cell pitch of the second electrode to a larger value. This parameter change allows the openings to be larger (improving light transmittance) while the mesh structure maintains sufficient electrode width for conductivity. The key is that the second electrode's mesh pattern is optimized with a larger average cell pitch compared to the first electrode, creating a balance where both transparency and conductivity requirements are met through parameter optimization rather than compromise.