Display Panel Mesh Metal Lines for Signal Uniformity
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Solution Overview
Problem
The existing display panels face issues with uniformity due to deviations in signal voltage delivery to different pixels, affecting the overall display quality.
Innovation Solution
A display panel design featuring a substrate with a first and second metal layer, including metal lines that intersect and form a mesh-like structure, with a peripheral metal line connected to both, ensuring even signal voltage distribution across pixel units by alternately distributing signal voltage routings in the same film layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If two rows of Vi signal routings are arranged in parallel, then the signal routing structure is simple, but voltage drop causes deviation in voltage level delivered to each pixel, affecting display uniformity
Solution Approach 1:
The patent transforms the traditional parallel linear arrangement of signal routings into a mesh-like structure by adding a second direction of metal lines. This dimensional change from 1D parallel lines to 2D grid allows signal delivery from multiple directions, reducing voltage drop deviation and improving display uniformity while maintaining structural simplicity.
Solution Approach 2:
The signal routing is segmented into multiple first metal lines extending in a first direction and multiple second metal lines extending in a second direction, forming a mesh structure. This segmentation allows the signal to be delivered through multiple paths rather than a single linear path, reducing the impact of voltage drop and improving voltage distribution uniformity across pixels.
2Ease of manufacture
If signal voltage routings are distributed unevenly, then the routing layout is simple, but voltage deviation occurs during signal delivery, affecting pixel operation
Solution Approach 1:
The mesh-like metal line structure creates multiple equipotential paths for signal delivery. By providing signal routing in two perpendicular directions, the structure ensures that voltage levels remain more consistent across different pixel locations, reducing voltage deviation and improving pixel operation reliability.
Data Source
AI summary
A display panel includes a substrate, a first metal layer arranged on the substrate, a first insulating layer disposed on the first metal layer, a second metal layer disposed on the first insulating layer, and a pixel unit. The first metal layer includes a first metal line and a second metal line. The first metal layer is spaced apart along a first direction. The second metal line is spaced apart along a second direction. The first metal line and the second metal line are connected at an intersection. The second metal layer includes a peripheral metal line. The peripheral metal line is electrically connected to the first metal line and the second metal line. The first metal line and the second metal line are connected to the pixel unit. The first metal line and the second metal line supply the pixel unit with a signal voltage.