Layer composite namely film composite for providing an operating element on an operating interface of a household appliance, the layer composite being characterised by , - a carrier layer on the one at least partially electrically conducting sensor layer , wherein the sensor layer is part of a capacitive sensor which is designed to detect contact with the operating interface above the sensor layer , an electrical light source and electrical lines for making contact with the sensor layer and the light source ; - wherein the sensor layer has a light-permeable region and an electrically conducting light-blocking region, wherein the light-blocking region encloses the light-permeable region at least partially; wherein the light source starting from the operating interface is arranged between the light-blocking region of the sensor layer ; and - an optical layer , which, starting from the operating interface , is arranged behind the carrier layer and is designed to conduct light of the light source from the light-blocking region to the light-permeable region of the sensor surface ; wherein the light-permeable region of the sensor layer forms a mask for a symbol to be represented on the operating interface and to this end has a contour of the symbol ; wherein the light-blocking region of the sensor layer , which directly adjoins the light-permeable region of the sensor layer , has the contour of the symbol so that by means of the sensor layer itself the symbol to be represented on the operating interface is formed; - wherein the carrier layer and the optical layer are connected, in particular glued, to one another, so that the sensor layer and the light source are protected against aerosols from an environment of the layer composite . - a carrier layer on the one at least partially electrically conducting sensor layer , wherein the sensor layer is part of a capacitive sensor which is designed to detect contact with the operating interface above the sensor layer , an electrical light source and electrical lines for making contact with the sensor layer and the light source ; - wherein the sensor layer has a light-permeable region and an electrically conducting light-blocking region, wherein the light-blocking region encloses the light-permeable region at least partially; wherein the light source starting from the operating interface is arranged between the light-blocking region of the sensor layer ; and - an optical layer , which, starting from the operating interface , is arranged behind the carrier layer and is designed to conduct light of the light source from the light-blocking region to the light-permeable region of the sensor surface ; wherein the light-permeable region of the sensor layer forms a mask for a symbol to be represented on the operating interface and to this end has a contour of the symbol ; wherein the light-blocking region of the sensor layer , which directly adjoins the light-permeable region of the sensor layer , has the contour of the symbol so that by means of the sensor layer itself the symbol to be represented on the operating interface is formed; - wherein the carrier layer and the optical layer are connected, in particular glued, to one another, so that the sensor layer and the light source are protected against aerosols from an environment of the layer composite . <EOS>