Composite Pane Color-Matched Design for Switchable Visibility
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Solution Overview
Problem
Existing composite panes with electro-optical functional elements face challenges in incorporating complex designs like lettering or logos without visual disruption across different states, and current methods for producing such structures are not cost-effective.
Innovation Solution
A composite pane design featuring an electro-optical functional element and a design element, where the design element shares the same color as the functional element in one state and contrasts in another, allowing seamless integration and visibility only in specific states, using thermoplastic intermediate layers to protect the functional element and enable easy replacement or modification of the design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If laser segmentation is used to incorporate designs into PDLC functional elements, then designs can be integrated into the functional element, but minimum distances between laser lines and minimum radii must be taken into account, limiting the complexity of structures that can be incorporated
Solution Approach 1:
The patent separates the design element from the electro-optical functional element, placing the design element in a separate layer (either between the functional element and intermediate layer, or on the intermediate layer itself). This segmentation allows the design element to have arbitrary complexity without being constrained by laser segmentation limitations, while the functional element maintains its electro-optical properties independently.
Solution Approach 2:
The patent moves the design element to a different spatial dimension (separate layer) rather than attempting to etch it directly into the functional element. This dimensional separation allows complex designs to be implemented without the geometric constraints of laser line spacing and minimum radii that would apply if the design were etched directly into the functional element.
2Adaptability or versatility
If designs are integrated into electro-optical functional elements, then visual integration is achieved, but production becomes more complex and less cost-effective
Solution Approach 1:
By separating the design element from the electro-optical functional element into distinct layers, the patent enables independent manufacturing of each component. The design element can be produced using standard printing or lamination techniques, while the functional element is manufactured separately, simplifying production compared to integrating both functions into a single complex component requiring specialized laser segmentation processes.
Solution Approach 2:
The intermediate layer serves multiple functions: it provides structural support for the composite pane, serves as a mounting substrate for the design element, and maintains the laminated structure. This multi-functionality simplifies production by using an existing component (the intermediate layer) for multiple purposes rather than requiring additional specialized layers or integration processes.
3Stability of the object's composition
If the design element uses a color matching the first state of the functional element, then seamless integration is achieved in the first state, but the design element must contrast with the second state to be visible
Solution Approach 1:
The patent applies different color properties to different states of the functional element relative to the design element. The design element is specifically colored to match the first state (providing seamless integration when the functional element is in that state), while inherently contrasting with the second state (enabling visibility when the functional element switches to the second state). This local quality approach optimizes both integration and visibility requirements.
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 design element is visually integrated with the electro-optical functional element in one state and distinct in another, ensuring a homogeneous appearance while allowing for simple and cost-effective production and easy replacement, enhancing aesthetic appeal without compromising functionality.
Implementation Method 1
electro-optical functional element, i.e. with functional elements whose optical properties can be changed by an applied voltage
Implementation Method 2
first thermoplastic intermediate layer, an electro-optical functional element, a second thermoplastic intermediate layer
Data Source
AI summary
A composite pane includes an outer pane, a first thermoplastic intermediate layer, an electro-optical functional element, a second thermoplastic intermediate layer, a design element, and an inner pane. The functional element is arranged between the outer and inner panes. The first thermoplastic intermediate layer is arranged between the outer pane and the electro-optical functional element. The second thermoplastic intermediate layer is arranged between the electro-optical functional element and the inner pane. The design element is arranged in a region of the composite pane which, when viewed through the composite pane, lies completely in the region in which the electro-optical functional element is arranged. The functional element is electrically controllable from a first state, in which the electro-optical functional element has a first color, to a second state, in which the electro-optical functional element has a second color. The design element has a third color corresponding to the first color.