Display Panel Fanout Wiring for Lower Interference and Easier Connections
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Solution Overview
Problem
The interference issue between the second connection line and the first power signal line, and the increased difficulty in connecting the first and second connection lines in OLED display panels with Fanout in Active Area (FIAA) architecture, are unresolved in existing technologies.
Innovation Solution
A display panel design where the second connection line and data lines are arranged in the same layer, separated by a planarization layer, with a patterned design of first power signal lines between pixel driving circuits, allowing electrical connection through via holes and avoiding interference by positioning the second connection line between power signal lines, thus facilitating the Fanout in Active Area (FIAA) architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the first power signal line is placed in an independent metal layer (third metal layer) between the first and second metal layers to avoid interference with the second connection line, then the interference issue is resolved, but the difficulty of connecting the first and second connection lines significantly increases due to the gap consisting of the third metal layer and at least two insulating layers
Solution Approach 1:
The patent changes the spatial arrangement by placing the first power signal line and second connection line in the same metal layer (second metal layer) rather than separating them vertically across multiple layers. This dimensional reorganization eliminates the need for the third metal layer and intermediate insulating layers, thereby reducing the gap and connection difficulty while maintaining interference avoidance through horizontal spacing between the lines.
Solution Approach 2:
The patent merges the first power signal line into the same metal layer as the second connection line (second metal layer), consolidating previously separate layers. This merging eliminates the third metal layer and reduces the number of insulating layers required, simplifying the overall structure and making the connection between first and second connection lines less difficult while still preventing interference through proper layout spacing.
2Device complexity
If the first connection line and second connection line are placed in adjacent metal layers to reduce connection difficulty, then the manufacturing complexity is reduced, but the first power signal line requires an independent layer which increases the total layer count and structural complexity
Solution Approach 1:
The patent combines the first power signal line with the second connection line in the same metal layer (second metal layer), reducing the total number of metal layers from three to two. This merging eliminates the need for the third metal layer and its associated insulating layers, simplifying the overall device structure while maintaining ease of manufacture through proper in-layer spacing.
Solution Approach 2:
The patent resolves the connection difficulty by reorganizing the spatial arrangement within the second metal layer, using horizontal spacing and positioning strategies instead of vertical layer separation. This allows the first connection line and second connection line to be connected more easily within the same layer structure, reducing overall device complexity.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes two pixel driving circuits that are adjacently and symmetrically arranged. Each pixel driving circuit is electrically connected to a data line. Between the two data lines corresponding to the two pixel driving circuits, two first power signal lines are placed, and a second connection line is arranged between the two first power signal lines. This arrangement effectively eliminates the interference problem between the second connection line and the first power signal line, and reduces the difficulty in connecting the first connection line and the second connection line.