Capacitive graphene touch screen

Abstract

The invention discloses a capacitive graphene touch screen. The capacitive graphene touch screen comprises a capacitive graphene touch screen body and a black insulating film, the side edge of the capacitive graphene touch screen body is coated with the black insulating film, and the capacitive graphene touch screen body comprises a lead electrode layer, a substrate, a graphene transparent conductive film layer and a flexible cover plate; the graphene transparent conductive thin film layer is attached to the upper surface of the substrate, the flexible cover plate is attached to the upper surface of the graphene transparent conductive thin film layer, and the lead electrode layer is printed on the lower surface of the substrate, wherein the capacitive graphene touch screen also comprises the through holes through which the electrode connecting lines penetrate, and the through holes are evenly formed in the substrate. The capacitive graphene touch screen is good in use safety and smallin thickness.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to a capacitive graphene touch screen. Background technique [0002] Graphene is a monoatomic layer planar film composed of carbon atoms with sp2 hybrid orbitals to form a hexagonal lattice. As a new type of semiconductor material, it has high light transmittance, high electrical conductivity, low cost, high stability, green environmental protection and can The advantages of new electrodes prepared on various substrates, etc., in the prior art: the patent application publication number CN 103279239 A discloses a graphene capacitive touch screen, including a transparent film layer I and a transparent film layer II, in the transparent The surfaces of the film layer I and the transparent film layer II are respectively provided with a graphene layer I and a graphene layer II, and the graphene layer II is bonded to the surface of the transparent film layer I, and the graphene layer...

AI Technical Summary

Problems solved by technology

[0002] Graphene is a monoatomic layer planar film composed of carbon atoms with sp2 hybrid orbitals to form a hexagonal lattice. As a new type of semiconductor material, it has high light transmittance, high electrical conductivity, low cost, high stability, green environmental protection and can The advantages of new electrodes prepared on various substrates, etc., in the prior art: the patent application publication number CN 103279239 A discloses a graphene capacitive touch screen, including a transparent film layer I and a transparent film layer II, in the transparent The surfaces of the film layer I and the transparent film layer II are respectively provided with a graphene layer I and a graphene layer II, and the graphene layer II is bonded to the surface of the transparent film layer I, and the graphene layer I or the graphene layer II is provided with The voltage source is provided with a sensing line on the graphene layer II or graphene layer I, and the touch screen also includes a capacitive sensing circuit, the sensing node is coupled to the capacitive sensing circuit, and the capacitive sensing circuit includes a multiplexer, Analog-to-digital converter and digital signal processing, the overall thickness is relatively large, at the same time, the side does not have insulation protection, and the use safety is poor

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