Touch Panel Electrode Irregular Wire Pattern for Moire Suppression
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Solution Overview
Problem
The existing touch panel electrode structures face challenges in suppressing the moire phenomenon due to overlapping patterns, which deteriorates visibility, especially when the line width of the conductive layer decreases, making it difficult to accurately control fine patterns and uniformly reduce the contact area between unit wires.
Innovation Solution
The electrode structure features continuous unit wires with irregular patterns where the contact area between unit wires decreases by a non-contact size value k, obtained by dividing the line width by an arbitrary real number, forming a mesh pattern that reduces the moire phenomenon by altering the formation position of subsequent unit wires within the advancing direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the line width of the conductive layer is decreased to reduce the contact area between unit wires, then the moire phenomenon is suppressed, but the manufacturing precision deteriorates due to difficulty in accurately controlling fine patterns
Solution Approach 1:
The conductive layer is divided into multiple unit wires with different line widths. By segmenting the uniform structure into non-uniform segments, the patent achieves irregular patterns that suppress moire while maintaining manufacturability through standard photolithography processes.
Solution Approach 2:
Different regions of the conductive layer are assigned different line widths locally. The first, second, and third unit wires have progressively smaller line widths in specific regions, creating local variations that prevent regular pattern repetition and reduce moire phenomenon without requiring overall reduction in line width.
2Illumination intensity
If the contact area between unit wires is reduced to suppress moire phenomenon, then visibility is improved, but the device complexity increases due to irregular pattern requirements
Solution Approach 1:
The patent introduces asymmetric variations in line width across different unit wires and regions. This asymmetry creates irregular patterns that break the symmetry required for moire formation, thereby improving visibility while the systematic approach to asymmetry keeps the design manageable.
Solution Approach 2:
The line width parameter is systematically changed across different unit wires (first, second, third unit wires with decreasing widths). This parameter variation creates the irregular patterns needed to suppress moire while maintaining a structured, controllable design process.
Data Source
AI summary
The present invention provides an electrode structure for a touch panel and a method for fabricating the same, in which a unit wire and another unit wire continued thereto are continued while the contact area between the unit wires decreases from the entire line width, thereby achieving irregular patterns. In the electrode structure for the touch panel and the method for fabricating the same, a metal wire formed with continuous unit wires has an irregular pattern where the contact area between any one unit wire and another unit wire continued thereto decreases, from the entire line width, by a non-contact size value k obtained by dividing a line width by an arbitrary real number.