Driving Panel Layout for Borderless Micro-LED Signal Routing
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Solution Overview
Problem
The existing micro-LED display technologies face challenges in achieving a borderless design due to the wide borders occupied by signal connecting lines and wiring, which limits the market application of driving panels.
Innovation Solution
A driving panel design that includes signal connecting lines in the display area, electrically connected to row scanning lines through vias, with a planarization layer and insulating layers to facilitate efficient electrical connections and reduce border width, allowing for a narrow or borderless panel configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If signal connecting lines are routed through left and right borders to achieve borderless display, then the display border is reduced, but the line width of signal connecting lines occupies larger border area
Solution Approach 1:
The patent routes signal connecting lines through the display area rather than border areas, transitioning from horizontal border routing to vertical display-area routing. This dimensional change allows signals to pass through the active display region using staggered row scanning lines and column scanning lines, eliminating the need for wide borders while maintaining signal integrity through proper layer stacking and via connections.
Solution Approach 2:
The patent segments the signal connecting lines into multiple components: row scanning lines, column scanning lines, and signal connecting lines that electrically connect these elements. This segmentation allows each line type to have optimized routing paths within the display area, with row and column lines staggered to minimize interference and border requirements.
2Length of stationary object
If signal connecting lines are placed in the display area, then border width is reduced, but electrical connection reliability may be affected
Solution Approach 1:
The patent employs multi-layer routing with row scanning lines, column scanning lines, and signal connecting lines stacked at different heights. This three-dimensional arrangement provides redundant electrical pathways and isolation, ensuring that signal connections remain reliable even when routed through the display area rather than borders.
Solution Approach 2:
The patent introduces insulating layers and via structures as intermediary elements between signal connecting lines and scanning lines. These intermediaries ensure proper electrical isolation and connection, maintaining signal integrity and connection reliability while allowing compact routing within the display area.
Data Source
AI summary
Provided are a driving panel and a display device including the driving panel. The driving panel includes: a substrate, including a display area and a non-display area; column scanning lines, disposed in the display area; row scanning lines, disposed in the display area and staggered with the column scanning lines; signal connecting lines, disposed in the display area and electrically connected to the row scanning lines; a drive circuit, disposed in the non-display area and electrically connected to the column scanning lines and the signal connecting lines; first electrode pads, disposed in the display area and electrically connected to the column scanning lines; second electrode pads, disposed in the display area and electrically connected to the row scanning lines and the signal connecting lines. Compared with the existing driving panel, the driving panel realizes a narrow border or even a borderless panel, and expands the application of the driving panel.