Display Device Data-Line Layout to Reduce Hole-Edge Coupling
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Solution Overview
Problem
The formation of holes in the display region of a display device leads to unwanted coupling between adjacent wires in the hole edge region, causing signal distortion and increasing the dead space, which affects the display performance.
Innovation Solution
The wires in the hole edge region are rearranged to prevent coupling by overlapping or gathering them in a way that reduces their proximity, using various configurations such as overlapping, gathering, and intersecting, with additional lines like driving voltage lines being introduced to further minimize coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If wires are disposed adjacent to each other in the hole edge region to bypass the hole, then the hole can be formed in the display region, but wire coupling occurs causing signal distortion and increased dead space
Solution Approach 1:
The patent applies dimensionality change by moving wires from the planar XY plane to the Z dimension (vertical stacking). Multiple wires are arranged in different layers above and below a reference plane, allowing them to bypass the hole while maintaining spatial separation. This vertical arrangement prevents coupling between adjacent wires that would occur in a purely planar configuration, thus preserving signal quality while enabling the hole to be formed in the display region.
2Area of stationary object
If wires are disposed adjacent to each other in the hole edge region to bypass the hole, then the hole can be formed in the display region, but dead space increases around the hole
Solution Approach 1:
By arranging wires in multiple vertical layers rather than forcing them to travel along the perimeter in the planar view, the patent reduces the horizontal space required. Wires can pass through different Z-levels to bypass the hole, minimizing the hole edge region area and reducing dead space while still achieving the goal of having a hole in the display region.
3Reliability
If wires are rearranged to overlap or gather in the hole edge region to prevent coupling, then wire coupling is reduced, but wire density increases in certain areas
Solution Approach 1:
The patent distributes wires across multiple vertical layers (Z-dimension) rather than concentrating them in planar clusters. This vertical dispersion allows wires to maintain lower density in any single layer while still achieving coupling reduction through spatial separation in three-dimensional space. The wires overlap when viewed from above but are separated vertically, preventing coupling without creating high-density clusters.
Data Source
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AI summary
A display device includes a substrate including a display region, a hole, and a hole edge region surrounding the hole, first data lines disposed on the substrate, extending in a first direction, arranged in a second direction intersecting the first direction in the display region, and bypassing the hole along the hole edge region, and second data lines disposed on the substrate, extending in the first direction, alternately arranged with the first data lines in the second direction in the display region, and bypassing the hole along the hole edge region. At least one of the first data lines intersects at least one of the second data lines such that the first data lines are disposed adjacent to each other and the second data lines are disposed adjacent to each other in the hole edge region.