Display Panel Layered Insulation for Narrow-Bezel Wiring
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Solution Overview
Problem
The increasing wiring density in display panels due to narrow bezel designs poses challenges in manufacturing, necessitating higher process requirements to avoid short circuits.
Innovation Solution
A display panel design with a driving circuit in the periphery, signal lines overlapping with the driving circuit, and insulating layers to separate them, along with openings in electrode power supply lines to reduce interference and maintain wiring space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the bezel area is reduced to achieve narrow bezel design, then the display area is increased, but the wiring density in the periphery increases
Solution Approach 1:
The patent utilizes the vertical dimension by stacking multiple insulating layers between the driving circuit and signal lines. This multi-layer insulation structure allows signal lines to pass through the periphery region without causing short circuits, effectively managing wiring density in the reduced bezel area while maintaining display area expansion
2Area of stationary object
If wiring density is increased to maintain full screen design, then the display area is maximized, but the risk of short circuit increases
Solution Approach 1:
The patent segments the insulation structure into multiple distinct insulating layers positioned between the driving circuit and signal lines. This segmentation provides multiple isolation barriers that prevent short circuits even when signal lines densely traverse the periphery region, enabling full screen design with maintained reliability
Solution Approach 2:
Multiple insulating layers serve as intermediary elements between the driving circuit and signal lines. These intermediary layers physically separate conductive elements that would otherwise be in close proximity due to high wiring density, preventing direct contact and short circuits while allowing the design to achieve full screen coverage
3Reliability
If insulating layers are added to prevent short circuits, then the manufacturing process complexity increases, but the short circuit prevention is achieved
Solution Approach 1:
The patent integrates multiple insulating layers into the existing display panel manufacturing process flow. By combining the formation of these insulating layers with standard fabrication steps and positioning them strategically in the periphery region, the design achieves short circuit prevention while minimizing additional manufacturing process complexity
Data Source
AI summary
A display panel and a display device are provided. The display panel has a display area. The display panel includes: a base substrate; a driving circuit and at least one signal line on the base substrate; and at least one insulating layer between the driving circuit and the at least one signal line. The driving circuit is disposed in a periphery of the display area; and an orthogonal projection of at least one of the signal lines on the base substrate has an overlapping area with an orthogonal projection of the driving circuit on the base substrate.