Multi-Layer Display Signal Lines for Low-Resistance Narrow Bezels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
As display panel sizes with high resolution increase, the resistance of signal lines also increases, leading to deteriorated display characteristics, necessitating research to reduce signal line resistance and improve scan time for enhanced display quality.
Innovation Solution
A display device design featuring signal lines in different layers, with specific metal materials and insulating layers, including inorganic and organic materials, to minimize resistance and improve aesthetics by reducing the bezel thickness, thereby reducing color differences between pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the size of the display panel increases to achieve high resolution, then the display quality is improved, but the resistance of the signal lines increases leading to deteriorated display characteristics
Solution Approach 1:
The patent transitions from planar signal line arrangement to a three-dimensional multi-layer structure. Signal lines are distributed across multiple layers (first layer, second layer, third layer) with vertical connections through insulating layers, effectively adding a vertical dimension to the signal transmission path. This reduces the horizontal distance signals must travel across the large display panel, thereby reducing resistance while maintaining high resolution.
Solution Approach 2:
The patent segments the signal transmission path into multiple sections across different layers. Instead of using long single-layer signal lines, the signal is transmitted through multiple shorter segments connected vertically between layers. This segmentation reduces the effective resistance of each segment and allows for better signal distribution across the large display panel area.
2Device complexity
If signal lines are arranged in a single layer to simplify structure, then device complexity is reduced, but signal line resistance increases
Solution Approach 1:
The patent resolves the contradiction by moving from a two-dimensional single-layer arrangement to a three-dimensional multi-layer structure. Signal lines are arranged in multiple layers (first layer, second layer, third layer) with vertical connections through insulating layers, effectively adding a vertical dimension to the signal transmission path. This reduces the horizontal distance signals must travel across the large display panel, thereby reducing resistance while maintaining high resolution.
Solution Approach 2:
The patent employs a composite structure combining multiple insulating layers (first insulating layer, second insulating layer, third insulating layer) with different material properties. These insulating layers are strategically positioned between signal lines in different layers to provide electrical isolation while allowing vertical signal transmission through openings, creating a composite material system that manages both complexity and resistance.
3Shape
If the bezel area is reduced to improve aesthetics, then the display area ratio is improved, but the space for arranging signal lines is reduced
Solution Approach 1:
The patent transitions from planar signal line arrangement to a three-dimensional multi-layer structure. Signal lines are distributed across multiple layers (first layer, second layer, third layer) with vertical connections through insulating layers, effectively adding a vertical dimension to the signal transmission path. This reduces the horizontal distance signals must travel across the large display panel, thereby reducing resistance while maintaining high resolution.
Data Source
AI summary
A display device includes: a base layer comprising a first portion, a second portion extending from the first portion, and a third portion extending from the second portion; a first light emitting element disposed on the first portion; a first front signal line electrically connected to the first light emitting element and disposed on the first portion; a second front signal line electrically connected to the first front signal line, disposed on the first portion, disposed in a different layer from the first front signal line, and overlapping the first front signal line; a first connection line electrically connected to the first and second front signal lines, disposed on the second portion, and disposed in a different layer from the first and second front signal lines; and a first rear signal line electrically connected to the first connection line and disposed on the third portion.