Transparent Conductive Element Wave Surface Structure
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Solution Overview
Problem
Existing transparent conductive elements used in display and input devices suffer from wavelength-dependent optical adjustment functions and compromised electrical reliability due to high reflectance caused by high-refractive-index materials like ITO.
Innovation Solution
A transparent conductive element with an optical layer featuring a wave surface structure where the transparent conductive layer follows the shape of the wave, with specific amplitude and angle ratios, and a particular lattice pattern to improve optical adjustment and electrical reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high-refractive-index material (e.g., ITO) is used for the transparent conductive layer, then electrical conductivity is improved, but reflectance increases and wavelength-dependent optical adjustment function is degraded
Solution Approach 1:
The patent applies curvature by forming a wave surface on the optical layer with specific wavelength and amplitude parameters. This curved surface structure modifies the optical path and reduces wavelength dependency of the optical adjustment function while maintaining electrical conductivity through the transparent conductive layer formed on the wave surface
Solution Approach 2:
The patent changes physical parameters by specifying particular ranges for wave surface wavelength (0.1-10 μm), amplitude (0.01-1 μm), and slope angle (5-45 degrees). These parameter optimizations enable the system to achieve reduced wavelength dependency while maintaining good electrical reliability through the transparent conductive layer
2Object-affected harmful factors
If the transparent conductive layer is made thinner to reduce reflectance, then optical transmission is improved, but electrical conductivity is degraded
Solution Approach 1:
The wave surface curvature extends the optical path length without increasing physical thickness, allowing the transparent conductive layer to maintain adequate thickness for electrical conductivity while achieving improved optical transmission through the distributed phase modulation effect of the curved 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
The solution achieves reduced wavelength dependency, enhanced optical adjustment, and improved electrical reliability by optimizing the wave surface structure and lattice pattern of the transparent conductive element.
Implementation Method 1
an optical layer provided with a wave surface having an average wavelength less than or equal to the wavelength of visible light
Implementation Method 2
a transparent conductive layer formed on the wave surface and following the shape of the wave surface
Data Source
AI summary
Transparent conductive element includes an optical layer provided with a wave surface that has an average wavelength smaller than or equal to a wavelength of visible light and a transparent conductive layer formed on the wave surface so as to follow the shape of the wave surface. When the average wavelength of the wave surface is λm and an average amplitude of vibration of the wave surface is Am, the ratio (Am/λm) is 0.2 or more and 1.0 or less; an average angle of sloped surfaces of the wave surface is in the range of 30° or more and 60° or less; and when a thickness of the transparent conductive layer at a highest position of the wave surface is D1 and a thickness of the transparent conductive layer at a lowest position of the wave surface is D3, a ratio D3/D1 is in the range of 0.8 or less.