Flexible Display Support Plate Segmentation for Bending Stress Reduction
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Solution Overview
Problem
Flexible display devices face challenges in processing time and cost due to the cell-based fabrication method, and there is a need to prevent cracking and damage during bending, especially in the bending area where stress is generated.
Innovation Solution
A method of manufacturing a display device involving a base substrate with a bending area, where a support plate with an adhesive film and support film is disposed on the substrate, and scribed along the boundaries to separate it, allowing for easy bending and minimizing stress on the display panel, thereby preventing cracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a cell-based fabrication method is used to manufacture flexible display devices, then each individual display device can be fabricated separately with good quality control, but the processing time and manufacturing cost increase significantly
Solution Approach 1:
The support plate is divided into multiple regions corresponding to different display devices, allowing simultaneous fabrication of multiple devices while maintaining individual quality control. The support plate acts as a common substrate that can be segmented into separate device regions, enabling parallel processing without compromising manufacturing precision.
Solution Approach 2:
Multiple display devices are prepared simultaneously on a single support plate before separation, performing the fabrication process in advance for all devices rather than sequentially. This preliminary batch fabrication reduces total processing time while maintaining quality standards through unified process control.
2Ease of operation
If the support film is cut in the bending area to enable easy bending, then the display device can be flexed without cracking, but the base substrate may be damaged
Solution Approach 1:
The support plate is divided into separate regions with cutting lines that define where the support film should be separated. These cutting lines create discrete support film sections that can be independently removed from bending areas, enabling flexible bending while the remaining support film continues to protect non-bending regions of the base substrate.
Solution Approach 2:
The support film is selectively removed only from specific bending areas while being retained in other regions. This localized modification allows the display device to bend in designated areas without compromising the protective function of the support film in other areas, preventing base substrate damage during bending operations.
3Object-affected harmful factors
If a support plate with adhesive film is used to cover the coating film pattern, then the display panel is protected during manufacturing, but the support plate must be separated which adds processing steps
Solution Approach 1:
The support plate integrates multiple functions: it serves as a protective cover for the coating film pattern, provides structural support during handling, and includes built-in cutting lines that define separation regions. By combining these functions into a single component, the number of separate manufacturing steps is reduced while maintaining protection capabilities.
Solution Approach 2:
The adhesive film on the support plate acts as an intermediary layer between the support plate and the coating film pattern, allowing for controlled separation. The adhesive properties enable the support plate to be easily detached along predefined cutting lines without damaging the underlying display structure, simplifying the removal process.
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 method enables flexible display devices to be easily bent without cracking and allows for efficient cutting of the support film in the bending area, reducing processing time and cost while protecting the base substrate from damage.
Implementation Method 1
disposing the support plate includes disposing the support plate in such a manner that the adhesive film is in contact with the coating film pattern and the first surface of the base substrate
Implementation Method 2
the scribing the support plate may include using a laser member or a heat knife
Implementation Method 3
the scribing the support plate may include using a laser member or a heat knife
Data Source
AI summary
A method of manufacturing a display device includes preparing a base substrate including a first area, a second area, and a bending area disposed between the first and second areas, the base substrate having a coating film pattern formed on a first surface thereof in the bending area; disposing a support plate, which includes an adhesive film and a support film, on the first surface of the base substrate to cover the coating film pattern; and separating the support plate and the coating film pattern, which overlap with each other in a thickness direction, from the base substrate, wherein the disposing the support plate includes disposing the support plate in such a manner that the adhesive film is in contact with the coating film pattern and the first surface of the base substrate.