Transfer Line Identification Layout for Display Defect Diagnosis
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Solution Overview
Problem
Existing display devices face challenges in efficiently identifying the position and order of transfer lines due to complex structures and manufacturing processes, which hinder defect diagnosis and increase production costs.
Innovation Solution
A display device design featuring a substrate with a light emitting device, transfer lines, identification parts, and marks that indicate direction and position, allowing for simplified identification of transfer line positions without additional numbering or distance changes, thereby simplifying the structure and manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional transfer line identification methods are used, then the position and order of transfer lines can be identified, but the structure becomes complex and manufacturing process efficiency decreases
Solution Approach 1:
The transfer line is divided into multiple identification parts, each with its own identification mark. This segmentation allows for simplified identification of each segment's position and order without requiring complex overall identification mechanisms, thereby reducing structural complexity while maintaining identification accuracy.
Solution Approach 2:
Instead of using complex physical identification structures, the patent uses identification marks that are formed simultaneously with the transfer line pattern during the manufacturing process. These marks are essentially copies or indicators integrated into the existing structure, eliminating the need for separate complex identification components.
2Measurement precision
If traditional transfer line identification methods are used, then the position and order of transfer lines can be identified, but manufacturing process efficiency decreases
Solution Approach 1:
The identification marks are merged with the transfer line pattern formation process. Both the transfer line and its identification marks are created in the same manufacturing step using the same patterning process, eliminating separate identification mark fabrication steps and thereby improving manufacturing efficiency while maintaining identification accuracy.
Solution Approach 2:
The identification marks are formed preliminarily during the pattern formation process itself, before any subsequent manufacturing steps. This preliminary action ensures that identification capability is built-in from the start, avoiding the need for additional post-processing steps and improving overall manufacturing efficiency.
3Difficulty of detecting and measuring
If identification marks are added to transfer lines, then defect diagnosis becomes easier, but the structure becomes more complex
Solution Approach 1:
The identification marks serve as simplified copies or indicators that replicate the positional information of the transfer line without adding complex functional elements. These marks are purely geometric features that ease defect diagnosis by providing clear visual references without complicating the actual transfer line structure.
Data Source
AI summary
A display device includes a substrate including a display area and a peripheral area, a light emitting device disposed in a display area on a substrate, a transfer line disposed on a substrate, extending in a first direction, and including a plurality of identification parts arranged along a first direction and at least one connection part disposed between adjacent identification parts, and identification marks, each of the identification marks is disposed in an area corresponding to each identification part of a transfer line adjacent to the each identification part of the transfer line, and the each of identification marks is disposed on an imaginary line extending from a center point of a corresponding identification part in a direction intersecting the first direction in a plan view.