Conductive Adhesive Layer for Flexible Display EMI Shielding
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Solution Overview
Problem
Flexible OLED display devices face issues with thickness due to the need for additional conductive shielding layers to prevent electromagnetic interference, which can cause electrical damage and display deficiencies like picture scintillation.
Innovation Solution
A flexible display panel with a conductive adhesive layer connected to an external potential, providing both electromagnetic shielding and adhesion, reducing the need for separate shielding layers and minimizing module thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a separate conductive shielding film layer is added to prevent electromagnetic interference, then electromagnetic shielding capability is improved, but module thickness increases
Solution Approach 1:
The patent combines the conductive shielding function with the adhesive layer by incorporating conductive particles into the adhesive material. This merging of functions eliminates the need for a separate shielding film layer, thereby maintaining electromagnetic interference protection while reducing overall module thickness.
Solution Approach 2:
The adhesive layer is designed to serve multiple functions simultaneously: it provides both bonding/adhesion between layers and electromagnetic shielding through its conductive properties. This multi-functionality resolves the contradiction by eliminating the need for additional dedicated shielding layers.
2Object-affected harmful factors
If multiple separate layers (adhesive layer + shielding layer) are used, then electromagnetic shielding is achieved, but device complexity increases
Solution Approach 1:
The patent merges the adhesive layer and shielding layer into a single integrated conductive adhesive layer, reducing the total number of layers and simplifying the device structure while maintaining both adhesion and electromagnetic shielding functions.
Solution Approach 2:
The conductive adhesive layer performs multiple functions (adhesion and electromagnetic shielding) that were previously required separate layers, thereby reducing device complexity while achieving the desired electromagnetic protection.
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
The conductive adhesive layer effectively shields electromagnetic interference, preventing electrical damage and improving display quality by reducing picture scintillation and module thickness in flexible OLED display devices.
Implementation Method 1
a conduction adhering layer located on a side of the flexible substrate away from the packaging layer, the conduction adhering layer being an adhesive layer having electrical conductivity
Data Source
AI summary
The present application provides a flexible display panel and a flexible display device containing the flexible display panel. The flexible display panel includes: a flexible substrate, a light-emitting element layer located on a side of the flexible substrate, a packaging layer located on a side of the light-emitting element layer away from the flexible substrate, and a conduction adhering layer located on a side of the flexible substrate away from the packaging layer; the conduction adhering layer being an adhesive layer having electrical conductivity, the conduction adhering layer being connected with an external potential. The conduction adhering layer has a double-side adhering function, and can shield external electromagnetic signal interference to the circuit in the light-emitting element layer, thereby alleviating the picture scintillation phenomenon caused by the external electromagnetic signal interference, improving display effect of the flexible display device, and reducing the module thickness of the flexible display device.