Transparent heating device with graphene film
AssigneesCentre National De La Recherche Scientifique, Universite Grenoble Alpes
InventorsVincent BOUCHIAT, Laetitia MARTY, Nedjma BENDIAB
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Abstract
The invention concerns a transparent heating device comprising: a graphene film fixed to a transparent substrate; a first electrode (205) connected to a first edge of the graphene film; and a second electrode (206) connected to a second edge of the graphene film, wherein there is a resistance gradient across the graphene film from the first electrode (205) to the second electrode (206).
Claims20
A transparent heating device comprising:
- a graphene film fixed to a transparent substrate;
- a first electrode connected to a first edge of the graphene film;
- and
- a second electrode connected to a second edge of the graphene film, wherein there is a resistance gradient across the graphene film from the first electrode to the second electrode, the graphene film comprising a first region adjacent to the first electrode and at least one further region, the first region being adapted to have a lower resistance per square than each of the at least one further regions, the graphene film comprising areas of reduced thickness and/or absence of graphene, the lower resistance per square in the first region with respect to the at least one further region resulting from the surface area and/or thickness of said areas of reduced thickness and/or absence of graphene.
A transparent heating device comprising:
- a graphene film fixed to a transparent substrate;
- a first electrode connected to a first edge of the graphene film;
- a second electrode connected to a second edge of the graphene film, wherein there is a resistance gradient across the graphene film from the first electrode to the second electrode, the graphene film comprising a first region adjacent to the first electrode and at least one further region, the first region being adapted to have a lower resistance per square than each of the at least one further regions;
- and
- one or more gate electrodes positioned in the at least one further regions and isolated from the graphene film by an insulating layer, a voltage applied to the one or more gate electrodes increasing the resistance per square of the graphene film in the at least one further regions.
A transparent heating and display device comprising:
- a transparent heating element formed of a graphene film fixed to a transparent substrate;
- and
- a plurality of light-emitting elements each comprising a pair of electrodes, wherein said graphene film forms one of the pair of electrodes of each of the light-emitting elements.
The transparent heating and display device of 10, wherein at least one of the light-emitting elements is an organic light-emitting diode.
A method comprising:
- forming a transparent heating device comprising a graphene film;
- and
- forming a plurality of light-emitting elements, each light-emitting element having a pair of electrodes, wherein the graphene film forms one of the pair of electrodes of each light-emitting element.
Dependencies are inferred from the claim text.