Touch Structure Trench Bending Scatters Light

The patent applies curvature by designing trenches with bending points instead of straight lines. The first, second, third, and fourth trenches all incorporate bending points that create curved paths, disrupting regular light reflection. This transforms the geometric form from linear to curved, thereby eliminating the shadow dispelling phenomenon while maintaining manufacturing feasibility through standard etching processes.

The patent segments the continuous trench structure into multiple sections with bending points. By dividing the trench into segments connected at bending points rather than using continuous straight lines, the structure creates irregular light reflection paths. This segmentation approach breaks up the regular reflection pattern that causes shadow dispelling while keeping the overall trench configuration manufacturable.

The patent merges the dummy electrode structure with the existing touch electrode pattern by using the same transparent conductive material and integrating them into the same ITO layer. The dummy electrodes are positioned in regions between the first and second touch electrodes, creating a unified structure that reduces shadow dispelling without requiring separate manufacturing steps or additional material layers, thereby limiting the increase in device complexity.

The patent changes the geometric parameters of the trenches by introducing bending points with specific curvature radii (5-20 micrometers) and controlling the spacing between bending points. These parameter modifications transform the trench geometry from straight to curved, effectively reducing shadow dispelling phenomenon while maintaining compatibility with existing manufacturing parameters and processes.