Touch Panel Electrode Recesses Prevent Linear Light Reflection
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Solution Overview
Problem
Existing touch panel display devices have issues with visually recognizing linear reflected light, which can affect image quality and user experience due to the design of detection electrodes and dummy electrodes, particularly at the ends where light reflection can be noticeable depending on the angle of incidence.
Innovation Solution
The design incorporates detection electrodes with circular arc recesses and protrusions alternately formed along their ends, and dummy electrodes with similar circular shapes, arranged in a triangular grid pattern to minimize reflectance and make linear reflected light harder to recognize, ensuring uniform occupancy of conductive material and reducing moiré interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If detection electrodes have linear ends with semicircular parts and linear parts, then the mesh shape is hard to visually recognize, but linear reflected light may be visually recognized depending on the angle of incident light
Solution Approach 1:
The patent replaces linear parts with circular arc-shaped recesses and protrusions at the ends of detection electrodes. This curvature transformation eliminates straight line segments that cause specular reflection, thereby preventing linear reflected light from being visually recognized while maintaining the aesthetic appearance of the mesh pattern.
2Device complexity
If detection electrodes have openings and dummy electrodes are provided, then the non-detection region is filled and mesh shape is obscured, but uniform occupancy distribution is not achieved
Solution Approach 1:
The patent applies different designs to different regions: detection electrodes have circular arc-shaped recesses and protrusions, while dummy electrodes have circular shapes. This local differentiation ensures that both detection and non-detection regions contribute to uniform occupancy distribution, achieving visual uniformity across the entire display surface.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances image quality by equalizing reflectance and preventing linear light reflection, thereby improving the visual appearance and functionality of touch panel display devices.
Implementation Method 1
the recesses and the protrusions being alternately and continuously formed in the first direction... make linear reflected light hard to visually recognize
Data Source
AI summary
A detecting device comprising: a plurality of detection electrodes extending in a first direction along a substrate and disposed apart from each other in a second direction orthogonal to the first direction; and a plurality of dummy electrodes provided between the detection electrodes, wherein the detection electrodes have a plurality of openings, the openings of the detection electrodes are arrayed in a triangular grid, the dummy electrodes are arrayed in a triangular grid, an end of each of the detection electrodes in the second direction has: a plurality of recesses; and a plurality of protrusions.