Active Matrix Substrate Gate Line Detour for Short Circuit Isolation
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Solution Overview
Problem
Existing display panels with active matrix substrates face issues with short circuits during size alteration, leading to display defects, as previous methods to prevent short circuits are not effective in preventing reoccurrence.
Innovation Solution
The implementation of an active matrix substrate configuration with gate line detour sections and source line detour sections, which are designed to isolate potential short circuit regions from the display area by bending and straddling lines to avoid new intersections, ensuring that short circuits do not affect the display region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display panel is mechanically divided to alter its size, then the display panel size can be changed, but short circuits may occur near the dividing line causing display defects
Solution Approach 1:
The gate line is divided into multiple independent sections (first gate line section, second gate line section, third gate line section) separated by isolation regions. This segmentation ensures that if a short circuit occurs in one section due to mechanical dividing, it does not affect other sections, thereby maintaining display reliability while allowing size alteration.
Solution Approach 2:
The patent extracts and removes the problematic intersection region by creating an isolation region that eliminates the crossing of gate lines and source lines near the dividing line. This removal of the hazardous geometric configuration prevents short circuits while preserving the essential wiring functions in separate zones.
2Ease of repair
If short circuits are detected and repaired after dividing the display panel, then display defects can be addressed, but repaired short circuits may reoccur causing display defects to reoccur
Solution Approach 1:
The patent implements preliminary action by pre-configuring the gate lines and source lines to avoid intersections in the isolation region before mechanical dividing occurs. The wiring layout is designed in advance with detour sections and isolation regions that prevent short circuits from occurring in the first place, eliminating the need for repairs and ensuring long-term reliability.
3Stability of the object's composition
If laser light is scanned to evaporate wiring material and divide wiring without dividing the substrate, then substrate integrity is maintained, but short circuits may still occur at intersections
Solution Approach 1:
The patent segments the wiring layout into distinct non-intersecting zones. Gate lines and source lines are configured to run in separate regions with isolation zones between them, eliminating the intersections where short circuits would occur even if the substrate remains intact after laser scanning.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively isolates regions where short circuits may occur due to mechanical dividing, preventing display defects and allowing for reliable laser scanning to remove short circuits without impacting the display area.
Implementation Method 1
laser light is scanned on the substrate and the material of the wiring or electrodes in a laser light irradiated region is evaporated
Data Source
AI summary
In the present disclosure, regions where a short circuit may have occurred due to dividing are isolated from a display region. In a gate line (13G) of an nth row, a gate line detour section (50G) that is provided corresponding to an intersection (CG,n,m) with a source line (15S) of an mth column has: a start section (51G) which is bent toward the −Y direction from a start position (XG,m(1), YG,n) that is in the −X direction relative to the intersection; and straddling sections (52G) which straddle a straight line (X=XS,m+dS/2) that passes through a +X direction end of the intersection and extends in the Y axis direction.