Laminated Glass Pane with Embedded Shielding for Display-PDLC Flicker
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Solution Overview
Problem
Existing composite panes with integrated electrical functional elements face electromagnetic compatibility issues due to interference from low-frequency electromagnetic fields, particularly when multiple elements like OLED displays and PDLC films are combined, which cannot be effectively shielded using externally connected components.
Innovation Solution
A composite pane design with a thermoplastic intermediate layer containing separate electrical functional elements, where a metallic protective layer is inserted between interference sources and sinks, and additional thermoplastic layers act as spacers to increase distance and shield against electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple electrical functional elements are integrated into the composite pane, then space requirement is reduced, but electromagnetic interference occurs causing flickering
Solution Approach 1:
A metallic protective layer is introduced as an intermediary element between the PDLC film (interference source) and the OLED display (interference sink). This metallic layer acts as a shield that blocks electromagnetic fields from the PDLC film from coupling into the OLED display's electrical connection cable, thereby eliminating the flickering effect while maintaining the integrated structure.
Solution Approach 2:
The metallic protective layer is laminated into the composite pane structure, nesting the shielding function within the existing layers. The stacking sequence integrates the metallic layer between functional elements, creating a nested configuration where the protective layer is embedded within the composite pane's internal structure rather than being an external addition.
2Object-affected harmful factors
If externally connected electrical components are used to solve electromagnetic compatibility problems, then interference is eliminated, but manufacturing complexity and cost increase
Solution Approach 1:
The electromagnetic shielding function is merged with the composite pane's intermediate layer structure. Instead of using separate externally connected shielding components, the metallic protective layer is laminated into the pane during the standard lamination process, combining the shielding function with the structural integrity of the composite pane and eliminating the need for additional external components.
Solution Approach 2:
The composite pane structure itself provides the electromagnetic shielding through the integrated metallic protective layer, making the system self-sufficient. The shielding is built-in during manufacturing, allowing the pane to protect its own functional elements from interference without requiring external shielding components or additional assembly steps.
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
Effectively reduces or eliminates electromagnetic interference, preventing visual disturbances like flickering, while maintaining optical clarity and ease of manufacturing, without the need for external shielding components.
Implementation Method 1
a metallic protective layer is arranged in the thermoplastic intermediate layer between the at least one first electrical functional element and the at least one second electrical functional element
Implementation Method 2
an outer pane and an inner pane, which are firmly bonded to one another by a thermoplastic intermediate layer
Data Source
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AI summary
The invention relates to a laminated glass pane (100) comprising: an outer glass pane (1) and an inner glass pane (2), which are firmly connected to each other by means of a thermoplastic intermediate layer (3), wherein the intermediate layer (3) comprises at least one first electric functional element (5) and at least one second electric functional element (8-1, 8-2), wherein at least one metallic protective layer (16) is arranged between the two electric functional elements (5, 8-1, 8-2), wherein the at least one first electric functional element is a display and/or the at least one second electric functional element is a PDLC film (8-1) and/or a light source.