Array Substrate Grid Wiring for High-Density Display Uniformity
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Solution Overview
Problem
The increasing demand for high pixel density in display panels poses challenges in minimizing interferences between various lines, necessitating improved wiring designs to reduce the impact of signal overlaps and enhance display uniformity.
Innovation Solution
An array substrate with a grid-like structure formed by intersecting initialization signal lines and connection lines, connected through via holes, which are arranged in different conductive layers to increase signal paths and reduce pressure on wiring space, thereby minimizing signal interference and improving display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If various lines are closely arranged to increase pixel density, then the pixel density is improved, but signal interference between lines increases
Solution Approach 1:
The patent transitions from planar wiring to three-dimensional stacked wiring with multiple conductive layers. Initialization signal lines and connection lines are arranged in different conductive layers, forming a grid-like structure that reduces in-plane interference while maintaining high pixel density through vertical stacking.
Solution Approach 2:
The wiring structure is segmented into multiple independent conductive layers. Each layer contains specific signal lines (initialization signal lines in one layer, connection lines in another layer), allowing signals to be separated in the vertical dimension and reducing electromagnetic interference between different signal types.
2Quantity of substance
If wiring space is reduced to increase pixel density, then the pixel density is improved, but wiring design complexity increases
Solution Approach 1:
The patent utilizes the vertical dimension by stacking multiple conductive layers. This allows wiring to be distributed across different heights, effectively increasing the available wiring space without expanding the planar area, thus maintaining high pixel density while simplifying wiring design through systematic layering.
Solution Approach 2:
The grid-like structure formed by intersecting initialization signal lines and connection lines serves multiple functions: it provides signal transmission pathways, reduces interference through spatial separation, and maintains design regularity. This multi-functional structure simplifies wiring design by providing a systematic framework that can be consistently applied across the entire display panel.
3Device complexity
If signal lines are arranged in a single layer, then the wiring design is simple, but signal interference increases and display uniformity deteriorates
Solution Approach 1:
The patent employs multiple stacked conductive layers to separate initialization signal lines from connection lines vertically. This three-dimensional arrangement reduces electromagnetic interference between different signal types while maintaining wiring design regularity through the systematic grid-like structure formed by line intersections in different layers.
Solution Approach 2:
Different signal lines are segmented into separate conductive layers based on their function. Initialization signal lines are placed in one layer while connection lines are placed in another layer, reducing signal interference and improving display uniformity while keeping the overall wiring design systematic and manageable.
Data Source
AI summary
The present disclosure relates to an array substrate and a display device. The array substrate includes a plurality of pixel units arranged in an array, each of the pixel units including a plurality of sub-pixels. The array substrate includes: a plurality of power lines which are arranged in a conductive layer on a base substrate, are arranged at intervals along a first direction and extend along a second direction, and are used for providing power signals to the sub-pixels; and a plurality of power leads which are arranged in another conductive layer, are arranged at intervals along the second direction and extend along the first direction. Projections of at least one of the power lines and at least one of the power leads on the base substrate intersect, and the projections of the power lines and the power leads on the base substrate form a grid-like structure.