Display Panel Cutting Layout With Retained ESD Protection
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Solution Overview
Problem
The existing methods for manufacturing display panels require multiple mask boards for different sizes, leading to increased time and cost, and the process of cutting display panels can damage fragile source and drain conductive patterns, resulting in low manufacturing yield due to electrostatic issues.
Innovation Solution
A method involving forming a first electrostatic protective circuit and source and drain conductive patterns on a base substrate with a target cutting region, removing only the source and drain conductive patterns within this region, and cutting the display panel while retaining the electrostatic protective circuit to prevent electrostatic damage during the cutting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple mask boards are used for different display panel sizes, then manufacturing precision can be maintained for each size, but device complexity and production time increase
Solution Approach 1:
The patent applies universality by designing a single mask board that can manufacture multiple sizes of display panels through a standardized cutting process. The mask board includes a standard cutting region with electrostatic protective circuits that can be consistently applied across different panel sizes, eliminating the need for multiple specialized mask boards while maintaining manufacturing precision.
Solution Approach 2:
The patent applies segmentation by dividing the manufacturing process into distinct regions: a display region and a standard cutting region. This allows the mask board to handle different panel sizes by varying only the cutting location within the standardized cutting region, while the core manufacturing process remains unchanged.
2Ease of manufacture
If electrostatic protective circuits are removed during cutting, then manufacturing cost can be reduced, but reliability decreases due to electrostatic interference causing damage
Solution Approach 1:
The patent applies preliminary action by pre-forming electrostatic protective circuits in the standard cutting region before the cutting process. These circuits are designed to be removed automatically during the cutting process, so the protective function is maintained throughout manufacturing without requiring additional protective measures or increasing complexity.
Solution Approach 2:
The patent converts the potentially harmful cutting process into a beneficial opportunity by designing the electrostatic protective circuits to be automatically removed during cutting. The cutting process that could cause damage is instead used to eliminate the protective circuits in a controlled manner, ensuring reliability is maintained while simplifying the manufacturing process.
3Productivity
If a one-time patterning process is used to remove conductive patterns, then productivity increases, but manufacturing precision may be compromised
Solution Approach 1:
The patent applies local quality by designing the electrostatic protective circuits and conductive patterns with specific local characteristics in the cutting region. The circuits are positioned and sized to ensure they are completely removed by the cutting process, while the one-time patterning process is optimized to remove conductive patterns with high precision in this specific region without affecting other areas.
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 approach improves the manufacturing yield of display panels by maintaining the electrostatic protective function during cutting, reducing damage from electrostatic charges and enabling the production of multiple sizes from a single set of mask boards.
Implementation Method 1
removing a pattern, within a second overlapping region, in the source and drain conductive pattern by laser
Data Source
AI summary
The present disclosure provides a method for manufacturing a display panel, a display panel and a to-be-cut display panel, and relates to the field of display technologies. The method includes: forming a first electrostatic protective circuit and a source and drain conductive pattern on a base substrate; removing the source and drain conductive pattern within the target cutting region; forming a to-be-cut display panel by forming a superstructure on the base substrate; and cutting the to-be-cut display panel in the target cutting region. When manufacturing the internal structure of the display panel, only the source and drain conductive pattern in the target cutting region is removed, while the electrostatic protective circuit in the target cutting region is retained. In this way, the electrostatic protective circuit can always play the function of electrostatic protective during the formation of the internal structure of the display panel, such that the internal structure of the display panel is avoided from being damaged by electrostatic, the manufacturing yield of the display panel improved, the problem of low manufacturing yield of the display panel in the related technology is solved, and the effect of improving the manufacturing yield of the display panel is achieved.