Oblique Segmented Electrode Structure for Touch Panel Shadow Elimination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrode structures in touch panels, such as those with strip or zigzag patterns, result in poor user experience due to moire patterns and unsatisfactory shadow elimination, affecting product quality and user experience.
Innovation Solution
An electrode structure comprising alternately arranged first and second electrodes, where the second electrodes are electrically separated and form oblique connecting lines with respect to the extending direction of the first electrodes, improving shadow elimination and reducing grainy picture issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If strip type or zigzag type electrode pattern is used, then electrode structure is simple, but moire pattern appears and shadow elimination is poor
Solution Approach 1:
The second electrode is divided into multiple electrically separated electrode segments arranged in an oblique pattern. This segmentation disrupts the periodic structure that causes moire patterns while maintaining electrical functionality, thereby eliminating shadow effects without significantly increasing overall device complexity.
Solution Approach 2:
The electrode structure uses asymmetric oblique arrangement of the second electrode segments relative to the first electrode, breaking the symmetry that typically causes moire patterns. This asymmetric design effectively reduces shadow elimination issues while keeping the structure relatively simple.
2Ease of manufacture
If traditional electrode patterns are used, then manufacturing process is simple, but user experience is poor due to visual defects
Solution Approach 1:
The second electrode segments are arranged in an oblique direction that is different from the extending direction of the first electrode, introducing a dimensional change in the pattern orientation. This oblique arrangement disperses optical reflections more effectively, reducing the grainy picture effect while remaining compatible with standard manufacturing processes.
3Object-affected harmful factors
If oblique connecting line pattern is used, then shadow elimination is improved, but electrode structure complexity increases
Solution Approach 1:
The second electrode is segmented into multiple electrically separated sections arranged obliquely, which improves shadow elimination by disrupting light reflection patterns. The segmentation is achieved through standard photolithography masking, so while the pattern is more complex, the manufacturing process remains relatively simple.
Data Source
AI summary
An electrode structure is disclosed, including: a plurality of first electrodes, which transfer an electrical signal; and a plurality of second electrodes, which do not transfer the electrical signal, wherein the first electrode and the second electrode are electrically separated from each other, the second electrode and the first electrode are alternately arranged, each of the second electrodes includes electrodes electrically separated from each other, and in the electrodes electrically separated from each other, some separation borders not perpendicular to an extending direction of the first electrode can be connected to form an oblique connecting line with respect to the extending direction. Further, a method of manufacturing an electrode structure, a touch panel and a touch display device are disclosed.