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Graphene thin film touch sensor and manufacturing method thereof

A technology of graphene film and touch sensor, which is applied in the direction of instruments, electrical digital data processing, and input/output process of data processing, etc. It can solve the problems of insufficient adhesion and difficulty in meeting the processing requirements of touch screens, etc.

Inactive Publication Date: 2014-07-23
WUXI GRAPHENE FILM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When overlapping with other metal electrodes, conductive electrodes are usually formed on the surface of the graphene film by methods such as screen printing and vacuum sputtering. However, the adhesion of these electrodes on the graphene film is not ideal, and it is easy to contact with the graphene on the contact surface. The underlying materials such as the substrate or the underlying graphene are separated, making it difficult to meet the needs of subsequent touch screen processing

Method used

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  • Graphene thin film touch sensor and manufacturing method thereof

Examples

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Embodiment 1

[0028] like figure 1 As shown, a graphene film touch sensor described in the embodiment of the present invention mainly includes a substrate 3, a metal lead electrode 2 and a graphene film 1, and also includes an optically transparent glue 4, and the metal lead electrode 2 is arranged on the surface of the substrate. The graphene film 1 is directly covered on the metal lead electrode 2 , and the optically transparent adhesive 4 is attached to the surface of the graphene film 1 .

[0029] A preferred embodiment, the material of the base 3 is polyethylene phthalate, polycarbonate, polyvinyl chloride, polyethylene, polyethylene naphthalate, polymethyl methacrylate, quartz or Any one of glass is acceptable.

[0030] The material of the metal lead electrode 2 is at least one of copper, silver, cobalt, gold, nickel, chromium, zinc, iron, platinum, ruthenium, molybdenum, niobium, iridium, palladium, titanium, pickaxe, tungsten, vanadium, aluminum, bismuth It can be any one of the a...

Embodiment 2

[0044] The embodiment of the present embodiment is basically the same as that of Example 1, except that the graphene film 1 is 100 layers, the thickness of the graphene film 1 is 30nm, and the optical transmittance in the visible light segment is 0%; The surface of the ethylene glycol ester substrate is sputtered with metal, using the vacuum evaporation method, followed by a three-layer metal stack of copper, aluminum and copper, the metal thickness is 10nm, 200nm, 50nm, and the square resistance of the metal lead electrode is 0.35Ω / □.

Embodiment 3

[0046] The embodiment of this embodiment is basically the same as that of Example 1, the difference is that the graphene film 1 is 2 layers, the thickness of the graphene film 1 is 0.7nm, and the optical transmittance in the visible light segment is 95%; The metal is sputtered on the surface of the ethylene glycol formate substrate, using the vacuum magnetron sputtering method, followed by a three-layer metal stack of copper, nickel and copper, the metal thickness is 20nm, 200nm, 40nm, and the square resistance of the metal lead electrode is 0.3Ω / □.

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Abstract

The invention discloses a graphene thin film touch sensor. The graphene thin film touch sensor mainly comprises a substrate, a metal lead electrode and a graphene thin film, and further comprises optical transparent adhesive tape. The metal lead electrode is arranged on the surface of the substrate, the graphene thin film directly covers the metal lead electrode, and the optical transparent adhesive tape is attached to the surface of the graphene thin film. A manufacturing method of the graphene thin film touch sensor comprises the steps that firstly, the metal lead electrode and an alignment target are arranged on the substrate; secondly, the graphene thin film is transferred to the substrate on which the metal lead electrode is arranged; thirdly, patterning is carried out on the surface of the graphene thin film based on the laser machining technology; fourthly, the optical transparent adhesive tape is attached to the surface of the patterning graphene thin film, and therefore the graphene thin film touch sensor is formed. According to the product and method, the sensor lead electrode is buried below the patterning graphene conducting thin film, good electric property contact is achieved, and the requirement for the adhesive force of graphene and the metal electrode is met in the process of manufacturing the touch sensor.

Description

technical field [0001] The invention relates to the field of touch screen manufacturing, in particular to a graphene film touch sensor and a manufacturing method thereof. Background technique [0002] Graphene is a hexagonal honeycomb two-dimensional crystal composed of a single layer of carbon atoms. Because graphene has excellent electrical, mechanical, thermal and optical properties, it has a wide range of applications in the field of materials. It can be used as a transparent electrode to replace indium tin oxide (ITO) films to manufacture touch screens, LCD displays, OLED devices, and solar cells. It can be used in many fields including mobile phone touch screens, displays, solar cells, supercapacitors, etc. [0003] When the existing graphene film is used as a transparent conductive electrode for a touch screen sensor, it faces a problem of how to achieve a good overlap with other electrodes. When overlapping with other metal electrodes, conductive electrodes are usu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
Inventor 王彬谭化兵李慧峰
Owner WUXI GRAPHENE FILM
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