Display Panel Inspection Pad Relocation for Narrow Bezel
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Solution Overview
Problem
The challenge in display panel manufacturing is the difficulty in forming inspection pads and wires in the peripheral areas due to the narrow separation between display panel units on a substrate, which hinders the production of multiple display panels from a single substrate and reduces manufacturing efficiency and yield rate.
Innovation Solution
The solution involves forming all or some portions of inspection pads and wires within the display panel, specifically in the peripheral areas connected to driver integrated circuits, allowing for a narrow bezel structure that integrates inspection pads and wires, thereby reducing the space required for these components and improving manufacturing efficiency and yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If inspection pads and wires are formed in the outer portion of the display panel, then inspection can be performed, but the separation between display panel areas cannot be sufficiently narrowed
Solution Approach 1:
The inspection pad and inspection wire are extracted from the outer portion of the display panel and relocated to the peripheral area within the display panel. This extraction allows the outer portion to be fully utilized for display panel production while inspection functions are maintained in the peripheral region, thereby enabling narrower separation between display panel areas and increasing productivity.
Solution Approach 2:
The inspection components are relocated from the outer portion (one-dimensional boundary) to the peripheral area (two-dimensional region within the panel). This dimensional transition allows inspection functions to be integrated into the panel structure without occupying external space, enabling tighter packing of multiple display panels on a substrate.
2Productivity
If the separation between display panel areas is narrowed to increase production, then manufacturing efficiency improves, but it becomes difficult to form inspection pads and wires in the outer area
Solution Approach 1:
The inspection pad and wire are extracted from the outer portion and repositioned to the peripheral area within the display panel. This extraction resolves the conflict by removing the requirement for outer area space while maintaining inspection functionality, allowing separation between display panel areas to be narrowed for increased productivity.
Solution Approach 2:
The inspection components are merged into the peripheral area of the display panel, combining the display panel structure with inspection functionality. This integration eliminates the need for separate outer area space for inspection components, enabling narrower separation between display panels while maintaining ease of manufacture through unified structure formation.
3Manufacturing precision
If inspection pads and wires are placed in the outer portion, then panel inspection is enabled, but the bezel width increases
Solution Approach 1:
The inspection pad and wire are extracted from the outer portion of the display panel and relocated to the peripheral area within the panel boundaries. This extraction eliminates the need for additional outer space that would increase bezel width, thereby maintaining narrow bezel design while preserving inspection capability.
Solution Approach 2:
The inspection components are moved from the one-dimensional outer boundary to the two-dimensional peripheral region within the panel. This dimensional relocation allows inspection functions to be accommodated within the existing panel area without extending the bezel width, achieving narrow bezel design with maintained inspection functionality.
Data Source
AI summary
Disclosed are a display panel in which all or some portions of an inspection pad and an inspection wire for inspection of a panel are formed in the display panel, and a display device.