Transparent Adhesive Layer Reuse in Display Back Plate Lamination
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Solution Overview
Problem
The high cost of temporary protective films increases the production cost of display panels, as these films are necessary in the manufacturing process of display panels, such as OLED display panels, and need to be removed and reattached multiple times.
Innovation Solution
A method for manufacturing a display panel that involves attaching a protective film with a transparent adhesive layer and a heavy release film to the display back plate, treating the transparent adhesive layer to increase its release force, and then removing the heavy release film to attach a functional layer directly to the transparent adhesive layer, thereby reducing the need for additional optical adhesive layers and materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a temporary protective film is used to protect the display back plate during manufacturing, then the display back plate is protected from damage, but the production cost increases due to the need to remove and reattach the film multiple times
Solution Approach 1:
The protective film is divided into two functional layers: a transparent adhesive layer that provides protection and can be selectively activated, and a heavy release film that enables easy removal. This segmentation allows the film to serve multiple purposes at different stages of manufacturing.
Solution Approach 2:
The transparent adhesive layer is pre-applied to the display back plate during protective film attachment, but its adhesive properties are initially suppressed. The adhesive capability is activated only when needed through UV irradiation, allowing preliminary preparation without permanent bonding.
2Strength
If the transparent adhesive layer is treated to increase release force to prevent delamination, then bonding strength is improved, but the ease of removing the protective film decreases
Solution Approach 1:
The adhesive properties of the transparent adhesive layer are made dynamic rather than static. The layer can transition between a non-adhesive state (for easy removal) and a highly adhesive state (for strong bonding) through UV irradiation, allowing optimal performance at different manufacturing stages.
Solution Approach 2:
The release force of the transparent adhesive layer is changed from a fixed property to a controllable parameter. By applying UV irradiation, the release force increases from an initial low value (first release force) to a high value (third release force), enabling strong bonding when needed while maintaining ease of removal when not irradiated.
3Reliability
If additional optical adhesive layers and materials are used to attach functional layers, then bonding reliability is improved, but the production cost increases
Solution Approach 1:
The transparent adhesive layer is designed to perform multiple functions: it serves as the protective film's adhesive component during manufacturing, and subsequently functions as the optical adhesive layer for attaching functional layers. This eliminates the need for separate adhesive materials and reduces overall production cost.
Solution Approach 2:
The protective film structure is merged with the optical adhesive layer requirement. The transparent adhesive layer inherently possesses the dual capability of providing protective film functionality and serving as the bonding adhesive for functional layers, combining what would traditionally be separate components.
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 reduces the production cost of display panels by eliminating the need for additional optical adhesive layers and materials, while ensuring the protective film can be easily adjusted and removed without delamination issues.
Implementation Method 1
processing the transparent glue layer includes: irradiating the transparent adhesive layer with ultraviolet light
Data Source
AI summary
Disclosed is a method for manufacturing a display panel. The method includes: providing a display back plate, wherein the display back plate is provided with a light emitting side; attaching a protective film on the light emitting side of the display back plate, wherein the protective film comprises a transparent adhesive layer disposed on the display back plate and a heavy release film disposed on a side, distal from the display back plate, of the transparent adhesive layer; treating the transparent adhesive layer; and removing the heavy release film, and attaching a functional layer on a side, distal from the display back plate, of the transparent adhesive layer.