Decorative Molded Part With Transparent-Off Display Layer

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Solution Overview

Problem

Molded parts in vehicle interiors lack advanced optics and visualization options beyond traditional decorative surfaces, necessitating a solution that integrates functional layers with decorative layers while maintaining visibility of the decorative surface.

Innovation Solution

Incorporating an electrical display element into the functional layer that is transparent or translucent when switched off, allowing the decorative layer to be visible, and enabling the display of surface images or ambient illumination, with a leveling layer and adhesion promoter to ensure a smooth substrate for the functional layer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an electrical display element is integrated into the functional layer, then visualization options and display functions are improved, but the visibility of the decorative layer is compromised

Engineering Contradiction:
Improvevisualization optionsVSAvoidvisibility of decorative layer
Core Design Contradiction:
Adaptability or versatilityVSIllumination intensity

Solution Approach 1:

The electrical display element is designed with dynamic transparency properties, switching between transparent and opaque states based on operational requirements. When switched off, the display element becomes transparent, allowing the decorative layer to be visible. When switched on, it displays surface images or provides ambient illumination, thus dynamically adapting its optical properties to resolve the contradiction between visualization and decorative visibility.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The transparency parameter of the electrical display element is changed based on its operational state. By controlling the electrical properties and optical characteristics of the display element, it can transition between transparent and opaque states, enabling both the display function and the visibility of the decorative layer to be achieved at different times.

Inventive Principle:
Principle #35Parameter changes

2Shape

If the front side of the decorative layer is made irregular with three-dimensional structures, then aesthetic appeal is improved, but the surface smoothness required for functional layer application deteriorates

Engineering Contradiction:
Improveaesthetic appealVSAvoidsurface smoothness
Core Design Contradiction:
ShapeVSManufacturing precision

Solution Approach 1:

The molded part is segmented into multiple layers with distinct functions: the decorative layer retains its irregular three-dimensional surface structure for aesthetic appeal, while a separate functional layer is applied on top to provide the smooth substrate surface required for the electrical display element. This segmentation allows both aesthetic and manufacturing requirements to be satisfied simultaneously.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The solution moves from a two-dimensional smooth surface requirement to a multi-layered three-dimensional structure. The irregular decorative layer serves its aesthetic purpose in one dimension, while the additional functional layer compensates for the surface irregularities, providing the necessary smoothness in another dimension for the electrical display element to be properly applied.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11807172B2Molded part
Publication Date: 2023.11.07 NOVEM CAR INTERIOR DESIGN GMBH
  • US11807172B2 patent drawing
  • US11807172B2 patent drawing

AI summary

A molded part having a front side of the molded part designed as a visible side, comprising a decorative layer having a front side and a rear side opposite the front side, a carrier arranged on the rear side of the decorative layer, and a functional layer arranged on the front side of the decorative layer. The functional layer is or comprises an electrical display element, wherein the electrical display element is designed, in a switched-on operating state, for displaying a surface image and/or for realizing a display function, and/or for realizing an illumination function on the visible side of the molded part, and wherein the electrical display element is at least largely transparent and/or translucent when the operating state is switched off, so that the front side of the decorative layer is visible through the functional layer on the visible side of the molded part.