Touch Screen Panel Etched Lines Visibility Reduction
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Solution Overview
Problem
Existing touch screen panels with dummy patterns suffer from visibility issues due to color differences between electrode patterns, making them obvious and difficult to conceal.
Innovation Solution
A touch screen panel design featuring first and second electrodes with etched lines that are insulated from each other, where the etched lines are arranged in specific directions and overlapping regions have minimal area, reducing visibility by projecting and enclosing lines to form concave or square shapes, and utilizing fibrous conductive substances like nano silver wire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If dummy patterns are added to non-electrode regions, then electrode pattern visibility is reduced, but the obviousness issue in etched regions between electrode patterns cannot be solved
Solution Approach 1:
The patent divides the etched regions into multiple segments by introducing dummy etched lines that connect to existing etched lines. This segmentation breaks up the large visible etched regions into smaller segments, reducing the overall visibility of the electrode patterns. The dummy etched lines are strategically placed to connect etched lines from different electrode patterns, creating a fragmented appearance that is less visually obvious.
Solution Approach 2:
The patent merges dummy etched lines with existing etched lines to form continuous dummy patterns. By connecting dummy etched lines to real etched lines, the invention creates integrated dummy patterns that effectively mask the electrode patterns. This merging approach ensures that the dummy patterns are seamlessly integrated into the existing structure, providing comprehensive coverage for reducing visibility across both electrode and non-electrode regions.
2Reliability
If etched lines are made wider to improve insulation, then electrode pattern visibility increases, but if etched lines are made narrower, then insulation performance deteriorates
Solution Approach 1:
The patent introduces dummy etched lines as intermediary elements that work together with the real etched lines to provide both insulation and visibility reduction. These dummy etched lines are positioned adjacent to the real etched lines and extend into the electrode regions, creating an additional insulating barrier while simultaneously breaking up the visual continuity of the electrode patterns. This intermediary approach allows for effective insulation without requiring excessively wide real etched lines.
Solution Approach 2:
The patent applies different qualities to different regions by making the real etched lines have consistent width for reliable insulation, while the dummy etched lines are strategically positioned in specific locations where visibility reduction is most needed. The dummy etched lines are extended into electrode regions locally, creating enhanced insulation and visibility reduction exactly where required, without unnecessarily increasing the width of all etched lines across the entire display.
Data Source
AI summary
A touch screen panel is provided, which includes a plurality of first electrodes, a plurality of first etched lines, a plurality of second electrodes, and a plurality of second etched lines. The first electrodes are formed along a first direction and separated by the first etched lines. The second electrodes are formed along a second direction and separated by the second etched lines. A largest width of the first and second etched lines is C, and each of a plurality of overlapping regions formed by projecting the first and second etched lines in a third direction have an area less than or equal to C squared. The first, second, and third directions are perpendicular to each other.