Array Substrate Data Line Cross-Linking for Signal Continuity
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Solution Overview
Problem
Current display panels face poor display issues due to disconnection of data lines, as they cannot effectively cross-link signals between data lines, leading to breaking points that affect the display.
Innovation Solution
The array substrate and display panel design includes a source/drain layer forming a first data line, with a second data line connected through a connecting hole, and additional features like a second metal layer, interlayer insulating layer, active layer, and compensation signal lines to ensure cross-linking and signal continuity even after disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single data line is used for unilateral signal input, then the data line structure is simple, but the data line cannot be cross-linked and disconnection causes poor display
Solution Approach 1:
The patent divides the single data line into multiple segments (first data line and second data line) that are spatially separated but electrically connected through connecting holes. This segmentation allows the signal path to be distributed across multiple routes, preventing single-point failure and enabling cross-linking between different data line segments.
Solution Approach 2:
The patent transitions from a planar single data line structure to a three-dimensional cross-linked structure by introducing connecting holes that vertically connect first and second data lines at different levels. This dimensional change enables signal redundancy and cross-linking without increasing lateral complexity.
2Ease of operation
If data lines are disconnected, then the breaking point is isolated, but poor display occurs away from the signal input terminal
Solution Approach 1:
The patent introduces connecting holes as intermediary elements that electrically connect first and second data lines through the interlayer insulating layer. These connecting holes act as mediators that maintain signal continuity even when one data line segment is disconnected, preventing display defects from propagating.
Solution Approach 2:
The patent pre-establishes redundant signal paths through the cross-linked data line structure before any disconnection occurs. By having alternative routes (first and second data lines connected through multiple connecting holes) ready in advance, the system can withstand disconnections without compromising display quality.
3Area of stationary object
If the distance between connecting holes is large, then sub-pixel coverage is improved, but impedance increases
Solution Approach 1:
The patent applies different spatial configurations to different regions of the display panel. Connecting holes are strategically positioned at specific distances (e.g., twice the sum of sub-pixel length and spacing in some embodiments, or one sub-pixel length in others) to optimize local electrical characteristics while maintaining overall sub-pixel coverage. This local optimization balances impedance control with area coverage.
Data Source
AI summary
The present invention provides an array substrate and a display panel. A second data line is disposed on the array substrate, so that a first data line is connected to the second data line. Therefore, after the first data line is disconnected, signals can be transmitted from the second data line, which solves a technical problem that current display panels cannot solve poor display caused by disconnection of the data lines.