Line Number Identification Patterns for Display Panel Manufacturing
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Solution Overview
Problem
Current display devices lack an efficient method to identify line numbers for gate lines, data lines, and fan-out lines during the manufacturing process, making defect detection and repair challenging.
Innovation Solution
A display device and manufacturing method that form line number identification patterns on these lines, using the same material and patterning process as the gate electrodes or source/drain electrodes, allowing for easy identification while maintaining the interval between adjacent lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If line number identification patterns are formed on gate lines, data lines, and fan-out lines, then ease of identification for defect detection is improved, but device complexity increases due to additional pattern formation
Solution Approach 1:
The line number identification patterns are merged with the existing gate lines, data lines, and fan-out lines by forming them using the same material layers and patterning processes. The identification patterns are created as wide portions or protruding sections of the existing lines themselves, rather than as separate additional structures, thus combining the functional line with the identification feature.
Solution Approach 2:
The same material layers and patterning processes used for forming the functional conductive lines are also used to form the line number identification patterns. This universal approach allows the identification patterns to be created without adding separate manufacturing steps, making the process multi-functional and efficient.
2Ease of operation
If identification patterns are formed as wide portions on lines, then identification capability is improved, but the interval between adjacent lines may be affected
Solution Approach 1:
The identification patterns are formed as localized wide portions or protruding sections at specific positions on the lines, rather than uniformly widening the entire line. This local quality approach allows identification functionality to be added only where needed, while maintaining the original line dimensions and spacing in other regions.
Solution Approach 2:
The line interval is predetermined and maintained during the pattern formation process. The identification patterns are designed and formed with pre-calculated dimensions that ensure they provide sufficient identification capability while maintaining the required spacing between adjacent lines. This preliminary planning prevents interval disruption.
3Productivity
If line number identification is implemented, then productivity is improved through easier defect detection, but manufacturing process complexity increases
Solution Approach 1:
The identification pattern formation is merged with the existing manufacturing process by using the same material deposition and patterning steps that are already required for creating the functional conductive lines. This combination eliminates the need for separate additional manufacturing steps.
Solution Approach 2:
The same manufacturing processes serve dual purposes: creating the functional conductive lines and simultaneously forming the line number identification patterns. This universal process approach improves productivity without adding manufacturing complexity.
Data Source
AI summary
The present disclosure relates to a display device and a method of fabricating the same. According to an embodiment of the disclosure, a display device comprising a plurality of sub-pixels formed in a display area of a display panel, a plurality of gate lines and a plurality of data lines electrically connected to the plurality of sub-pixels, a plurality of fan-out lines formed in a non-display area of the display panel to be electrically connected to the plurality of data lines, a plurality of gate control lines electrically connected to a gate driver formed in the non-display area, and at least one line number identification pattern formed on at least one line among the plurality of gate lines, the plurality of data lines, the plurality of fan-out lines, and the plurality of gate control lines, wherein the line number identification pattern represents a line number for the at least one line.