Pixel Inspection Gate-Line Pattern Layout for Display Panels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices face challenges in ensuring reliable optical inspection of pixel areas, where defects can be difficult to accurately determine due to varying lengths of vertical gate lines and line patterns, affecting the reliability of the inspection process.
Innovation Solution
The display device incorporates a specific metal pattern configuration, where first and third metal patterns form a vertical gate line, and second and fourth metal patterns form a line pattern, ensuring identical recognition of pixel areas in optical inspection, even with varying lengths, by being alternately connected and insulated, thereby enhancing defect detection reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vertical gate lines and line patterns have varying lengths in pixel areas, then the optical inspection process becomes more complex, but the reliability of defect detection deteriorates
Solution Approach 1:
The gate line structure is segmented into multiple metal patterns (first, second, third, fourth metal patterns) that are alternately connected and insulated. This segmentation allows each pattern to be independently configured to have identical shapes and lengths, simplifying optical inspection while maintaining the functional integrity of the gate line structure
Solution Approach 2:
Different metal patterns are assigned specific local functions: first and third metal patterns form the vertical gate line, while second and fourth metal patterns form the line pattern. Each pattern is locally optimized to have identical shape and length, ensuring uniform appearance during optical inspection while performing distinct electrical functions
2Reliability
If multiple metal patterns are used to form gate lines and line patterns, then the electrical connectivity is improved, but the manufacturing complexity increases
Solution Approach 1:
Multiple metal patterns are merged into a unified structure where first and third metal patterns combine to form the vertical gate line, and second and fourth metal patterns combine to form the line pattern. This merging ensures consistent electrical connectivity while maintaining uniform appearance for optical inspection
Solution Approach 2:
The metal patterns are arranged in multiple layers or dimensions, with first and second metal patterns on one layer and third and fourth metal patterns on another layer. This dimensional arrangement enables complex electrical connectivity while keeping each individual pattern simple and uniform for easy manufacturing
Data Source
AI summary
A display device includes a data line disposed on a substrate and extending in a first direction, a first gate line disposed on the data line and extending in a second direction intersecting the first direction, a voltage line extending in the second direction, the voltage line and the first gate line disposed on a same layer, first and second metal patterns extending in the first direction, the first metal patterns, the second metal patterns, and the data line disposed on a same layer, and third and fourth metal patterns extending in the first direction, the third and the fourth metal patterns disposed on at least one of the first and the second metal patterns. The first metal patterns and the third metal patterns are electrically connected to the first gate line, and the second metal patterns and the fourth metal patterns are electrically connected to the voltage line.