Display Signal Line Stacking with Insulation for Sensitivity
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Solution Overview
Problem
Existing display devices suffer from poor transitivity, insufficient sensitivity, and performance issues, particularly in the overlap and arrangement of signal lines and electronic components.
Innovation Solution
A display device design featuring insulation layers between signal lines and a specific arrangement of lines and components to enhance sensitivity and display quality, including a first insulation layer between the first and second lines, a second insulation layer between the second and third lines, and a third insulation layer between the third and fourth lines, with overlapping and non-overlapping lines in a planar view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If signal lines are arranged in overlapping configurations to reduce area, then device area is reduced, but signal interference increases and sensitivity decreases
Solution Approach 1:
The patent transitions from planar signal line arrangement to three-dimensional stacked arrangement with insulation layers. Signal lines are positioned at different vertical levels (first signal line above second signal line, third signal line above fourth signal line) separated by insulation layers, enabling area reduction through vertical stacking while preventing signal interference through spatial separation in the z-dimension.
Solution Approach 2:
Insulation layers are introduced as intermediary structures between signal lines. These insulation layers physically separate the signal lines at different levels, preventing direct contact and electrical interference while allowing the lines to maintain close proximity for compact area utilization. The insulation layers act as mediators that enable dense packing without compromising signal integrity.
2Reliability
If insulation layers are added between signal lines to reduce interference, then signal quality improves, but device complexity increases
Solution Approach 1:
The device structure is segmented into distinct vertical layers: first signal line layer, first insulation layer, second signal line layer, second insulation layer, third signal line layer, third insulation layer, and fourth signal line layer. This segmentation isolates each signal line in its own vertical compartment, preventing interference while maintaining organizational simplicity through systematic layering. Each insulation layer is a discrete element that can be independently fabricated and positioned.
Solution Approach 2:
The signal lines and insulation layers are nested in a compact vertical configuration where multiple signal lines are embedded within a stacked structure separated by thin insulation layers. This nested arrangement achieves high integration density by placing multiple functional elements within a small vertical footprint, reducing overall device complexity compared to lateral expansion approaches.
3Speed
If signal lines are positioned closer together to improve transitivity, then signal transmission efficiency improves, but signal interference increases
Solution Approach 1:
The patent achieves close proximity positioning for improved transitivity by utilizing the vertical dimension rather than lateral positioning. Signal lines are placed at different vertical levels with minimal spacing, maintained by thin insulation layers, enabling strong signal coupling and efficient transmission while the vertical separation prevents horizontal interference between adjacent lines.
Data Source
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AI summary
A display device includes: a base layer including a first region in which a hole is defined, a second region surrounding the first region, and a third region surrounding the second region; a line part disposed on the second region and including first, second, third, and fourth lines disposed on different layers from each other; pixels disposed on the third region; first signal lines electrically connected to the pixels and arrayed along a first direction; and second signal lines electrically connected to the pixels and arrayed along a second direction, wherein one second signal line is electrically connected to the first line, another second signal line is electrically connected to the second line, one first signal line is electrically connected to the third line, and another first signal line is electrically connected to the fourth line.