Array Substrate Common Line Defect Repair
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Solution Overview
Problem
The increased probability of defects in conducting lines on array substrates of display panels, particularly due to the need for high resolution and aperture ratio, leads to elevated RC loading in repairing segments, causing signal delay and deteriorating display quality, and limits the design of slim border designs.
Innovation Solution
A method where a part of the common line is used as a substitution line for a data line with a broken defect, reducing RC loading and improving display quality without requiring peripheral layout space for repairing segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repairing segments are disposed on the peripheral region of the array substrate, then defects in data lines or gate lines can be repaired, but the RC loading of the repairing segment increases due to its excessive long path, causing signal delay and deteriorating display quality
Solution Approach 1:
The patent transitions from using peripheral region space to using inter-pixel area space for repairing segments. By changing the spatial dimension from the boundary perimeter to the internal pixel regions, the repairing segments can be positioned much closer to the actual defect locations, dramatically reducing the conducting path length and RC loading while maintaining defect repair capability
Solution Approach 2:
The patent places repairing segments locally within or near the pixel areas where defects occur, rather than集中ating them in the peripheral region. This localized positioning ensures that each repairing segment has a short conducting path to the defect it repairs, reducing signal delay and RC loading while maintaining targeted repair effectiveness
2Reliability
If repairing segments are disposed on the peripheral region of the array substrate, then defects can be repaired, but enough space must be maintained in the peripheral region, making it impossible to accomplish the design of slim border
Solution Approach 1:
The patent relocates repairing segments from the peripheral border region to the inter-pixel areas within the display region. This dimensional shift from boundary to internal space eliminates the need for enlarged peripheral borders, allowing slim border design while maintaining sufficient space for repairing segments near defect locations
Solution Approach 2:
The patent makes the pixel areas serve dual functions: displaying images and housing repairing segments. By utilizing the inter-pixel areas for both display and repair purposes, the design achieves slim borders without sacrificing defect repair capability, as the same space serves multiple functions
Data Source
AI summary
An array substrate of display panel includes a plurality of gate lines, common lines, data lines and repairing segments. The data line includes a first data line, and the common line includes a first common line. The first common line penetrates through first, second and third pixel areas, and the first data line has a broken line defect on a side of the first pixel area. The first common line has a first cutting part in the second pixel area and a second cutting part in the third pixel area, and the first common line between the first and second cutting parts forms a floating common repairing segment. In the second pixel area, the first data line is electrically connected to the common repairing segment through the repairing segment. In the third pixel area, the first data line is electrically connected to the common repairing line through the repairing segment.