Conductive Adhesive Decorative Panel for No-Show Illumination
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Solution Overview
Problem
Existing decorative and panel parts in vehicle interiors lack the ability to provide diverse optical effects and functional capabilities, such as electrical conductivity and heating, while maintaining a no-show design when the light source is off.
Innovation Solution
A shaped part with a transparent or translucent decorative layer and an electrically conductive adhesive structure that includes a light source, allowing for electrical connectivity and the display of symbols or patterns when illuminated, and optionally providing heating or switchable transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional adhesive structure is used, then the decorative layer can be bonded to the support, but the shaped part lacks electrical conductivity and diverse functional capabilities
Solution Approach 1:
The adhesive structure is designed to perform multiple functions simultaneously: it bonds the decorative layer to the support, provides electrical conductivity through conductive adhesive material, enables light transmission when required, and can form heating elements. This multi-functional design eliminates the need for separate components for each function, thereby increasing adaptability without proportionally increasing complexity.
Solution Approach 2:
The adhesive structure employs composite materials, specifically conductive adhesive containing metallic fillers or particles embedded in an adhesive matrix. This composite approach combines the bonding properties of adhesives with the electrical conductivity of metallic materials, enabling the adhesive layer to serve both structural and electrical functions within a single integrated component.
2Adaptability or versatility
If the adhesive structure is made electrically conductive, then electrical connectivity and heating functions are enabled, but the manufacturing complexity increases
Solution Approach 1:
The manufacturing process merges the adhesive bonding function with the electrical conductivity function into a single application step. The conductive adhesive is applied directly to bond the decorative layer, eliminating the need for separate adhesive application and subsequent electrical trace fabrication steps. This integration simplifies the overall manufacturing process despite the enhanced functionality.
Solution Approach 2:
The conductive adhesive's properties can be adjusted by varying the concentration and distribution of metallic fillers or particles within the adhesive matrix. This parameter adjustment allows optimization of both electrical conductivity and bonding strength during a single manufacturing process, avoiding the need for multiple processing steps to achieve different functional properties.
3Illumination intensity
If a light-transmissive support is used, then optical effects can be displayed, but the structural strength may be reduced
Solution Approach 1:
The support structure utilizes composite materials that combine light-transmissive properties with adequate mechanical strength. By incorporating transparent or translucent materials with appropriate structural design, the support achieves both optical functionality for displaying effects and sufficient strength to maintain structural integrity, resolving the contradiction between light transmission and strength.
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
Enables a wide range of optical effects and functional capabilities, including electrical connectivity and heating, while offering a no-show design by concealing symbols when the light source is off, enhancing the aesthetic and functional versatility of vehicle interior components.
Implementation Method 1
the first adhesive layer is formed from an electrically conductive adhesive
Implementation Method 2
a light source for transilluminating at least the adhesive structure and the decorative layer
Implementation Method 3
The functions and/or effects can also be a heating application which can be realized by a corresponding shaping of the first adhesive layer and flow of current through the first adhesive layer
Data Source
AI summary
The invention relates to a shaped part comprising a transparent or translucent decorative layer having a front face and a rear face opposite the front face, wherein an adhesive structure is arranged on the rear face of the decorative layer, wherein the adhesive structure comprises at least one first adhesive layer, the shaped part comprising a support and a light source for transilluminating at least the adhesive structure and the decorative layer. The invention is characterized in that the first adhesive layer is formed from an electrically conductive adhesive.