Input Detection Unit Curved Conductive Pattern Light Reflection
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Solution Overview
Problem
Existing electronic devices face challenges in enhancing user interaction and visibility through input detection systems, particularly in preventing external light reflection and ensuring reliable conductive pattern formation for effective input detection.
Innovation Solution
The electronic device incorporates a compensation pattern with an inclined surface on a detection insulating layer, covering conductive patterns to prevent light reflection and ensure uniform conductive material application, thereby enhancing visibility and reliability of the input detection unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional flat conductive pattern structure is used, then the manufacturing process is simple, but light reflection occurs and visibility is reduced
Solution Approach 1:
The patent applies curvature by forming the conductive pattern with a specific curved profile including a lower surface, upper surface, and lateral side surfaces. This curved structure prevents light reflection by scattering incident light, thereby improving visibility while maintaining manufacturing feasibility through standard deposition processes.
Solution Approach 2:
The patent implements local quality by creating different surface regions on the conductive pattern with distinct functions: the lateral side surfaces are optimized for light reflection prevention, the upper surface for electrical contact, and the lower surface for adhesion. This localized functional differentiation resolves the contradiction between visibility improvement and structural complexity.
2Reliability
If the conductive pattern is made thicker to improve conductivity, then electrical performance improves, but light reflection increases and visibility decreases
Solution Approach 1:
The curved profile of the conductive pattern, with specifically designed lateral side surfaces, enables the structure to maintain adequate thickness for electrical conductivity while preventing light reflection through geometric light scattering. This resolves the contradiction between electrical performance and visibility.
3Ease of manufacture
If the conductive material is applied uniformly, then manufacturing is easier, but the lateral side surfaces are not properly covered leading to light reflection
Solution Approach 1:
The patent employs preliminary action by forming the conductive pattern with pre-designed lateral side surfaces before final encapsulation. This preliminary structuring ensures that subsequent material applications properly cover the lateral surfaces, preventing light reflection while maintaining manufacturing simplicity through standardized processes.
4Illumination intensity
If the compensation pattern is added to cover lateral surfaces, then light reflection is prevented, but manufacturing complexity increases
Solution Approach 1:
The patent merges the compensation pattern with the conductive pattern structure itself, where the lateral side surfaces of the conductive pattern serve dual functions: providing the necessary curvature for light reflection prevention and serving as the compensation structure. This integration reduces manufacturing complexity while maintaining visibility improvement.
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 effectively prevents light reflection and ensures reliable conductive pattern formation, improving user interaction and visibility by maintaining the integrity of the input detection system.
Implementation Method 1
A compensation pattern is disposed on the first detection insulating layer... The compensation pattern contacts the lateral side surfaces of the first conductive pattern
Data Source
AI summary
An electronic device includes a display panel including a plurality of pixels. A first detection insulating layer is disposed on the display panel. A first conductive pattern is disposed on the first detection insulating layer. A compensation pattern is disposed on the first detection insulating layer. A second detection insulating layer is disposed on the first detection insulating layer and covers the first detection insulating layer, the compensation pattern and the first conductive pattern. A second conductive pattern is disposed on the second detection insulating layer. The first conductive pattern includes a lower surface in contact with the first detection insulating layer. An upper surface faces the lower surface and contacts the second detection insulating layer. Lateral side surfaces extend between the lower surface and the upper surface. The compensation pattern contacts the lateral side surfaces of the first conductive pattern.