Flexible Display Panel Vacuum Sealing and Stripping Method
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Solution Overview
Problem
During the manufacturing of flexible OLED panels, the flexible substrates are prone to bending and damage when separated from supporting plates, leading to device failure.
Innovation Solution
A method involving a supporting column matrix and ultraviolet sealant is used to securely attach the flexible substrate to a supporting plate in a vacuum-sealed space, allowing for the formation and separation of flexible display panels without damaging the devices, by cutting along the inner side of the sealant.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the flexible substrate is completely attached to the supporting plate by sealants, then the substrate is securely fixed during manufacturing, but the substrate may be bent during the stripping process causing device damage
Solution Approach 1:
The supporting plate is divided into a rigid supporting plate portion and a flexible extending portion. This segmentation allows the extending portion to flex during stripping without transmitting bending forces to the rigid plate, thus preventing device damage while maintaining secure attachment during manufacturing
Solution Approach 2:
The flexible extending portion is specifically designed to have different mechanical properties (flexibility) compared to the rigid supporting plate portion. This local quality differentiation allows the attachment to remain strong during manufacturing while enabling controlled flexibility during stripping to prevent device damage
2Stability of the object's composition
If the flexible substrate is completely attached to the supporting plate, then the substrate remains stable during manufacturing processes, but the substrate cannot be easily separated without damaging devices
Solution Approach 1:
By segmenting the supporting plate into rigid and flexible portions, the design achieves both stability during manufacturing (rigid plate provides stable base) and ease of stripping (flexible portion can be detached without damaging the substrate or devices)
Solution Approach 2:
The flexible extending portion acts as an intermediary between the rigid supporting plate and the flexible substrate. It provides stable attachment during manufacturing while serving as a sacrificial element that can be easily removed during stripping, facilitating easy separation without device damage
3Strength
If the flexible substrate is fully bonded to the supporting plate, then the assembly maintains structural integrity during processing, but the substrate protrudes and bends during separation
Solution Approach 1:
The supporting plate is segmented into a rigid portion that maintains structural integrity and a flexible extending portion that accommodates shape changes during stripping. This allows the assembly to maintain integrity during processing while preventing substrate bending during separation
Solution Approach 2:
The flexible extending portion has localized flexible properties that allow it to deform during stripping without transmitting stress to the rigid plate or the substrate. This local flexibility prevents substrate shape distortion while maintaining overall structural integrity during manufacturing
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 ensures the flexible substrate is securely fixed and separated from the supporting plate without damaging the devices, maintaining panel integrity and preventing protrusion during manufacturing.
Implementation Method 1
fixing the flexible substrate with the supporting plate by a sealant in vacuum, wherein the sealant is disposed at the edge of the supporting column matrix, such that the supporting column matrix is surrounded in a sealed space formed by the sealant, the supporting plate and the flexible substrate
Implementation Method 2
the sealant is an UV sealant, and the step of fixing the flexible substrate with the supporting plate by a sealant comprises: curing the sealant between the flexible substrate and the supporting plate by an ultraviolet
Data Source
AI summary
A method for manufacturing a flexible display panel includes: binding a flexible substrate with a supporting column matrix on a supporting plate, and fixing the flexible substrate with the supporting plate by a sealant in vacuum, wherein the sealant is disposed at an edge of the supporting column matrix, such that the supporting column matrix is surrounded in a sealed space formed by the sealant, the supporting plate and the flexible substrate; forming a flexible display panel on the flexible substrate; and cutting the supporting plate and the flexible display panel along the inner side of the sealant, such that the flexible display panel separating with the supporting plate. Thus, the flexible substrate can be separated from the supporting plate without damaging devices disposed on the flexible substrate.