Display Module Protective Layer for Bending Region Signal Lines
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Solution Overview
Problem
Conventional display modules require an additional process to apply UV glue at the bending region to protect signal lines, increasing costs and risking glue overflow into the display region.
Innovation Solution
A display module with a protective layer comprising a first protection portion covering the bending region and a second protection portion covering the display region, both formed by the same process, replacing UV glue to reduce manufacturing steps and costs while protecting signal lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UV glue is applied at the bending region to protect signal lines, then the reliability of signal lines is improved, but the device complexity and manufacturing cost increase due to additional dispensing process
Solution Approach 1:
The patent merges the protective function with the existing encapsulation layer by extending it into the bending region. Instead of adding a separate UV glue layer through dispensing, the encapsulation layer is continuously formed across the display region, bonding region, and bending region in a single manufacturing process, thereby eliminating the need for additional protective coating steps while maintaining signal line protection.
Solution Approach 2:
The encapsulation layer is designed to serve multiple functions: it encapsulates the display region, bonds the bonding region, and protects the bending region with signal lines. By making the encapsulation layer extend into the bending region, it becomes a multi-functional structure that simultaneously performs encapsulation, bonding, and protection tasks, eliminating the need for separate protective materials.
2Reliability
If UV glue is applied at the bending region to protect signal lines, then the reliability of signal lines is improved, but the manufacturing cost increases due to additional process steps
Solution Approach 1:
The patent combines the protective function with the encapsulation process. The encapsulation layer is formed in a single continuous manufacturing step that covers the display region, bonding region, and bending region. This integration eliminates the need for separate UV glue dispensing operations, reducing manufacturing steps and associated costs while maintaining signal line protection.
Solution Approach 2:
The patent extracts the protective function from the separate UV glue application process and integrates it into the encapsulation layer formation. By removing the need for additional protective coating materials and processes, the manufacturing cost is reduced while the protection function is retained through the extended encapsulation layer.
3Reliability
If UV glue is applied at the bending region to protect signal lines, then the reliability of signal lines is improved, but the manufacturing precision decreases due to risk of glue overflow into display region
Solution Approach 1:
The patent merges the protective function with the encapsulation layer, which is formed using established precise manufacturing techniques. The encapsulation layer is deposited or molded in a single continuous operation that precisely defines its boundaries across the display region, bonding region, and bending region, eliminating the precision risks associated with UV glue dispensing near the display region.
Solution Approach 2:
The encapsulation layer serves as an intermediary structure that provides protection without requiring precise application near the display region. Unlike UV glue that must be carefully dispensed, the encapsulation layer can be formed using more robust manufacturing methods that are less sensitive to positioning precision, thereby reducing the risk of overflow into the display region.
Data Source
AI summary
A display module and a display device are provided. The display module includes a display panel and a protection layer, the protection layer is arranged on the display panel, the protection layer includes a first protection portion and a second protection portion, and the first protection portion covers a bending region, the second protection portion covers the display region and/or the binding region, and the first protection portion is formed by the second protection portion extending to the bending region. The first protection portion in the present application is configured to replace a UV glue in the prior art, and can be formed by a same process as the second protection portion.