Cover plate for a domestic appliance, said cover plate comprising a fabry-perot interference layer

Abstract

A cover plate for a domestic appliance includes a support plate made of a glass or glass ceramics and having at least one at least partially transparent area for covering a display element. A coating is applied onto the support plate and includes at least one semi-transparent metallic layer having a layer thickness between 10 nm and 50 nm, at least one further metallic layer, and a dielectric separation layer separating the further metallic layer from the semi-transparent metallic layer.

1 - 15 . (canceled) 
     
     
         16 . A domestic appliance cover plate, comprising:
 a support plate made of glass or glass ceramic and having at least one at least partially transparent region for covering a display element; and   a coating applied onto the support plate and comprising at least one semi-transparent metallic layer having a layer thickness between 10 nm and 50 nm, at least one further metallic layer, and a dielectric separation layer separating the further metallic layer from the semi-transparent metallic layer.   
     
     
         17 . The domestic appliance cover plate of  claim 16 , wherein the semi-transparent metallic layer is applied to a rear face of the support plate facing the display element. 
     
     
         18 . The domestic appliance cover plate of  claim 16 , further comprising at least two of said at least partially transparent metallic layer, and a further dielectric separation layer separating said at least two of said at least partially transparent metallic layer. 
     
     
         19 . The domestic appliance cover plate of  claim 18 , wherein the further dielectric layer has a thickness of less than between 5 nm and 500 nm. 
     
     
         20 . The domestic appliance cover plate of  claim 16 , wherein at least one of the metallic layers has a break in proximity to a region for covering a touch sensor for electrical isolation of the region. 
     
     
         21 . The domestic appliance cover plate of  claim 20 , wherein the break is produced by cutting into the metallic layer. 
     
     
         22 . The domestic appliance cover plate of  claim 16 , further comprising a marking printed on at least parts of the support plate. 
     
     
         23 . The domestic appliance cover plate of  claim 22 , wherein at least one of the metallic layers is applied to the support plate after the marking has been printed on. 
     
     
         24 . The domestic appliance cover plate of  claim 16 , further comprising at least one contact electrode connected to at least one of the metallic layers to feed control signals into the metallic layer. 
     
     
         25 . The domestic appliance cover plate of  claim 16 , wherein at least one of the metallic layers is applied to the support plate using a PVD sputter procedure. 
     
     
         26 . The domestic appliance cover plate of  claim 16 , wherein one of the metallic layers defines an outer metallic layer which is covered by a dielectric protective layer. 
     
     
         27 . The domestic appliance cover plate of  claim 16 , wherein at least one of the metallic layers is made from a material selected from the group consisting of silver, gold, aluminum, molybdenum, copper, nickel, silicon, stainless steel, titanium, niobium, tantalum, tungsten, palladium, an alloy, and a combination of two or more of these materials. 
     
     
         28 . The domestic appliance cover plate of  claim 16 , wherein the dielectric separation layer is made of at least one material selected from the group consisting of oxides and nitrides of metallic elements. 
     
     
         29 . The domestic appliance cover plate of  claim 28 , wherein the oxides are selected from the group consisting of stannic oxides, zinc oxides, aluminum oxides, titanium oxides, silicon oxides, nickel oxides, chromium oxides, niobium oxides, tantalum oxides, and combinations thereof. 
     
     
         30 . The domestic appliance cover plate of  claim 28 , wherein the nitrides of metallic elements are selected from the group consisting of silicon nitrides, titanium nitrides, chromium nitrides aluminum nitrides, and combinations thereof. 
     
     
         31 . The domestic appliance cover plate of  claim 16 , wherein the support plate comprises at least one marking in the form of an internal laser engraving. 
     
     
         32 . The domestic appliance cover plate of  claim 16 , wherein at least one of the metallic layers is removed again from parts of the support plate to produce structures.