Patent Application
20210009049
The present invention claims the benefit of and priority to German Patent Application No. 10 2019 118 683.8, filed on Jul. 10, 2019. The entire content of the aforementioned patent application is incorporated herein by reference.
The invention relates to a molded part, in particular a decorative part and/or panel part designed as a molded part for a vehicle interior.
Numerous decorative and panel parts are installed in the vehicle interior, such as door panels, console panels, and instrument panels. The decorative and panel parts also include control buttons and their covers.
Such molded parts have a front side of the molded part designed as a visible side and comprise a decorative layer, in particular a wood veneer and/or aluminum and/or fabric, 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 requirements for such molded parts are constantly increasing. There is also a particular desire to provide molded parts in which not only a decorative surface is visible on the front side of the molded part, but also further optics and visualization options.
The invention is therefore based on the object of specifying a novel molded part, in particular a molded part which at least largely meets the above requirements.
This object is achieved by the features of claim 1. Advantageous refinements and developments are specified in the respective dependent claims.
The molded part according to the invention is characterized in that the functional layer is or comprises an electrical display element, wherein the electrical display element is in a switched-on operating state for displaying a surface image and/or for realizing a display function, and/or for realizing a preferably ambient 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.
A surface image can be understood to mean, for example, a pattern and/or a lettering and/or a symbol, and/or a structure, and/or a flat color representation, and/or a flat color change.
The advantages of the invention are, in particular, that additional surface images, such as designs and/or symbols and/or structures, and/or colors, and/or color changes, can be represented on the front side of the molded part by means of the electrical display element. These surface images can be switched on and off by the invention, whereby a second design view is created in addition to the decorative layer. By activating the electrical display element, the desired surface images appear on the front side of the molded part. If the electrical display element is switched off, the decorative layer can be seen.
The decorative layer preferably has an irregular surface structure on its front side, a transparent or translucent leveling layer being arranged on the front side of the decorative layer to compensate for the irregular surface structure of the decorative layer. “Irregular” is preferably understood to mean that the front side of the decorative layer is at least partially three-dimensional in relation to the substantially smooth surface of the front side of the molded part, for example by means of elevations or depressions on the front side of the decorative layer.
The leveling layer is preferably provided between the decorative layer and the functional layer in order to form a smooth substrate surface for the functional layer with the front side of the leveling layer.
According to one embodiment variant of the invention, a, preferably transparent or translucent, adhesion layer is provided on the front side of the leveling layer as an adhesion promoter between leveling layer and functional layer.
It can further be provided that a transparent or translucent protective and/or optical layer, in particular a protective lacquer or a protective film, is arranged on the front side of the functional layer, wherein the front side of the protective and/or optical layer preferably form the front side of the molded part.
According to an embodiment variant of the invention, the functional layer comprises an electrical display element and one or more additional plies, the electrical display element being arranged on the front side of the one or more additional plies of the functional layer, wherein the electrical display element extends partially or completely over the front side of the one or more additional plies of the functional layer.
Furthermore, it can be provided that the functional layer comprises an electrical display element and at least two additional plies, wherein the electrical display element is arranged between the at least two additional plies of the functional layer, wherein the electrical display element extends partially or completely over the front side of an additional ply and on the rear side of another additional ply of the functional layer. For example, two additional plies can also be arranged on the front side and/or rear side of the electrical display element.
A development of the invention provides that the at least one, in particular two, additional plies is an electrically conductive ply.
It is further provided that the functional layer is or comprises a functional film and/or a functional glass, the functional film and/or the functional glass having or forming an electrically conductive layer. The electrically conductive layer can be or can be formed, in particular by additive or subtractive application, from conductive material, for example vapor-deposited indium tin oxide, graphene, silicene, or mesh made from copper, gold, or silver.
The functional layer preferably comprises at least one connection element for applying current to the functional layer, in particular for supplying power to the electrical display element. The at least one connection element is preferably provided on or in one or the electrically conductive plies of the functional layer. The connection element can also be provided for the transfer of information from an external unit, for example an external controller, to the functional layer, in particular when the electrical display element is designed as a display or touch display.
It can be provided that the electrical display element is or comprises an e-ink display, and/or an LCD display, and/or an OLED display, and/or a TOLED display. E-ink displays (electronic ink) or e-paper are non-luminous displays that reflect light like normal paper. They are characterized by a high contrast and low energy consumption. There are various manufacturing processes, but mostly a technique based on electrophoresis is used. LCD displays (liquid crystal displays) are liquid crystal displays whose function is based on the fact that the direction of polarization of light is influenced by liquid crystals when an electrical voltage is applied. In contrast to the inorganic light emitting diodes used in LCD displays, TOLED/OLED displays (“transparent organic light emitting diode”/“organic light emitting diode”) are used as display elements in the case of organic light emitting diodes or LECs (“light-emitting electrochemical cells”). The electrical display element can also be or comprise a touch display.
It can further be provided that the electrical display element is or comprises an illumination device. For example, the illumination device can be provided over the entire surface or partially in the functional layer or can form the functional layer.
It can also be provided that the leveling layer has one or more partial layers, the partial layers being applied to one another, in particular in an additive method, for example printed on and/or sprayed on and/or poured on, and/or applied on. It can also be provided that one or more of the partial layers, in particular after the application and/or depending on the respective application method, are ground or polished partial layers.
According to one embodiment variant of the invention, the leveling layer is in particular designed as an adhesion promoter between the decorative layer and the functional layer.
The decorative layer is preferably a colored layer or a tinted layer. For example, the front side of the decorative layer can be provided, at least partially, with one or more layers of paint, in particular coated and/or sprayed and/or printed, in an application method.
The molded part according to the invention is also explained in more detail below with regard to further features and advantages on the basis of the description of exemplary embodiments and with reference to the accompanying schematic drawings.
In order to describe the manner in which the above-recited and other advantages and features of the invention can be obtained, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
On the front side 13 of the decorative layer 12, a transparent leveling layer 17 is arranged to compensate for the irregular surface structure of the decorative layer 12. According to the exemplary embodiment of
The functional layer 16 according to the exemplary embodiment according to
The functional layer 16 according to the exemplary embodiment according to
In the switched-on operating state, the display serves to display a surface image on the visible side 11 of the molded part 10. Patterns or symbols can thus be realized as an additional design view. If the display is switched off, the front side 13 of the decorative layer 12 on the visible side 11 of the molded part 10 can be seen through the transparent functional layer 16.
The functional layer 16 further includes a connection element 23 for the power supply of the electrical display element 21.
A transparent protective layer 20, which consists of a protective lacquer and forms the front side 11 of the molded part, is arranged on the front side 19 of the functional layer 16.
| Number | Date | Country | Kind |
|---|---|---|---|
| 102019118683.8 | Jul 2019 | DE | national |
