Display Panel Routing Structure for Non-Overlapping Signal Lines
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Solution Overview
Problem
Existing display devices face challenges in ensuring reliable electrical connections and signal transmission between different areas of the display panel, particularly in non-display areas, which can affect the overall performance and reliability of the device.
Innovation Solution
The display device incorporates a unique layout of connection and bridge lines in the non-display area, with specific configurations of horizontal and vertical lines, dummy lines, and insulating layers to ensure electrical connectivity without overlap, using contact holes for connections, and includes a substrate with distinct areas for sub-pixels and photo sensing pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connection lines and bridge lines are routed through non-display areas to establish electrical connectivity, then signal transmission reliability is improved, but the risk of line overlap and signal interference increases
Solution Approach 1:
The patent applies dimensional separation by routing connection lines and bridge lines through different spatial paths in the non-display area. Connection lines extend from the first area to the second area while bridge lines extend from the second area to the first area, with explicit positioning to prevent overlap. This spatial arrangement in multiple dimensions eliminates signal interference while maintaining electrical connectivity.
Solution Approach 2:
The patent segments the signal transmission paths by dividing the non-display area into distinct regions for different line types. Connection lines and bridge lines are separately routed through specific zones, with contact holes positioned at defined locations. This segmentation isolates signal paths and prevents interference while ensuring reliable connectivity between display areas.
2Adaptability or versatility
If multiple lines are routed through the non-display area to maintain electrical connectivity, then device functionality is improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs asymmetric routing patterns where connection lines and bridge lines follow different paths through the non-display area. The connection lines extend from the first area to the second area while bridge lines return from the second area to the first area, creating an asymmetric layout that simplifies manufacturing by providing clear, distinct routing guidelines for different line types.
Solution Approach 2:
The patent introduces contact holes as intermediary elements that facilitate electrical connectivity between lines and pads in the non-display area. These contact holes are positioned at specific locations to enable reliable electrical connections while simplifying the overall manufacturing process by providing predefined connection points.
Data Source
AI summary
A display device may include: a substrate including a display area which includes a first area and a second area and a non-display area; data lines located in the first area and the second area; readout lines located in the first area and the second area, the readout lines being spaced apart from the data lines; connection lines extending from the first area to the second area, the connection lines being electrically connected to corresponding readout lines disposed in the second area; and bridge lines extending from the second area to the first area, the bridge lines being electrically connected to corresponding data lines disposed in the first area. The connection lines and the bridge lines does not overlap with each other.