Sub-Display Signal Line Layout for Narrow-Bezel Display Panels
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Solution Overview
Problem
Existing display devices have a significant non-display area that reduces the effective screen space for visual content.
Innovation Solution
The display device is designed with first and second signal lines arranged in specific sub-display areas, connected to pads at the sides of the display area, and extending in different directions, allowing for a more efficient layout that minimizes the non-display area by optimizing the arrangement of pixels and signal lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If signal lines are arranged in conventional display devices, then the display device can function properly, but a significant non-display area is created that reduces effective screen space
Solution Approach 1:
The display area is divided into first and second sub-display areas, with signal lines selectively arranged in different regions. First signal lines are arranged in the first sub-display area while second signal lines are arranged in the second sub-display area, allowing independent optimization of each region to minimize non-display area while maintaining functionality.
Solution Approach 2:
Signal lines extend in different directions (first direction vs. second direction) to utilize two-dimensional space more efficiently. This directional arrangement allows signal lines to be routed through different spatial paths, reducing the non-display area required for signal line accommodation.
2Area of stationary object
If signal lines are arranged to minimize non-display area, then effective screen space increases, but the arrangement complexity of signal lines increases
Solution Approach 1:
Different signal line arrangement strategies are applied to different sub-display areas. First signal lines with specific characteristics are arranged in the first sub-display area, while second signal lines are arranged in the second sub-display area, allowing each region to be optimized locally for its specific signal line requirements.
Solution Approach 2:
The arrangement of signal lines is made asymmetric by extending first signal lines in a first direction and second signal lines in a second direction. This asymmetric arrangement optimizes space utilization in each direction, minimizing the overall non-display area while simplifying the routing complexity compared to symmetric arrangements.
Data Source
AI summary
A display device may include first signal lines arranged in a display area, and extending in a first direction, pixels arranged in the display area, and respectively connected to the first signal lines, first pads located in a first pad area at a side of the display area in the first direction, and arranged along a second direction, first lines extending along the first direction to the display area from the first pad area, and respectively connected to the first pads, and second lines arranged in the display area, and respectively connecting the first lines to the first signal lines, wherein the display area includes a first sub-display area corresponding to the first pad area, and a second sub-display area adjacent the first sub-display area, and wherein the first lines are arranged only in the first sub-display area among the first and second sub-display areas.