Manufacturing method for graphene touch screen sensor

A technology of a touch screen sensor and a manufacturing method, which is applied to instruments, data processing input/output process, electrical digital data processing, etc., can solve problems such as poor printing adhesion, achieve good electrical connection, and solve problems of poor printing adhesion Effect

Inactive Publication Date: 2015-07-22
WUXI GRAPHENE FILM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is, for above-mentioned problem, proposes a kind of manufacture method of graphene touch screen sensor, to solve the problem of the poor printing adhesion of metal paste on graphene film

Method used

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  • Manufacturing method for graphene touch screen sensor
  • Manufacturing method for graphene touch screen sensor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for manufacturing a graphene touch screen sensor, taking a substrate transferred with a graphene film as an object, removing the graphene film in the electrode printing area in advance, leaving only the graphene overlapping area, the overlapping area is the electrode printing area and the graphene In the area where the films overlap, the metal electrode paste is printed on the electrode printing area where the graphene film is removed, and the sensor is formed after patterning.

[0031] Wherein, the substrate in the substrate transferred with the graphene film is a plastic or glass substrate.

[0032] The manufacturing method specifically includes the following steps:

[0033] Such as figure 1 and figure 2 as shown, figure 1 All within the dotted line is the electrode printing area, where the shaded area is the area where graphene is removed, and the shaded area inside the dotted line is the graphene overlapping area. figure 2 In the metal electrode area ...

Embodiment 2

[0044] The specific preparation steps of the graphene touch screen sensor in this embodiment are as follows:

[0045] (1) Taking the PET substrate with the transferred 2-layer graphene film as the object, and using the four surrounding targets as the reference, the graphene in the electrode printing area is removed by laser direct writing process, revealing the base material, and retaining the graphene bonding pick up area.

[0046] (2) Clean the surface of the graphene film by blowing dust with compressed gas;

[0047] (3) Use a screen printing machine to overprint the silver paste to the surface area of ​​the substrate where the graphene has been removed, and ensure that the metal electrode paste can overlap the edge of the graphene with a lap width of 0.5mm to form a good electrical connection;

[0048] (4) Use a dust-free oven to bake the silver paste, the baking temperature is 135 degrees, and the baking time is 60 minutes, so that it can meet the requirements of the po...

Embodiment 3

[0051] The specific preparation steps of the graphene touch screen sensor in this embodiment are as follows:

[0052] (1) Take the glass substrate with one layer of graphene film transferred as the object, and use the mask plate combined with the plasma etching process to remove the graphene in the electrode printing area and reveal the substrate material, based on the four surrounding targets. Preserve the graphene overlap area.

[0053] (2) Clean the surface of the graphene film by blowing dust with compressed gas;

[0054] (3) Use a screen printing machine to overprint the gold paste to the surface area of ​​the substrate from which the graphene has been removed, and ensure that the metal electrode paste can overlap the edge of the graphene with a lap width of 0.4 mm to form a good electrical connection;

[0055] (4) The gold paste is baked in a dust-free oven, the baking temperature is 140 degrees, and the baking time is 80 minutes, so that it can meet the requirements of ...

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Abstract

The invention discloses a manufacturing method for a graphene touch screen sensor. The method comprises the steps that a substrate transferred with graphene thin film serves as an object, the graphene thin film in an electrode printing area is removed in advance, a graphene overlapping area is only reserved, the overlapping area is the superposed area of the electrode printing area and the graphene thin film, the electrode printing area without the graphene thin film is printed with metal electrode paste, and the sensor is formed after patterning is conducted. According to the manufacturing method for the graphene touch screen sensor, the graphene thin film in the electrode printing area is removed in advance, the graphene overlapping area is only reserved, and then a lead metal electrode printing method is adopted, so that a printing electrode is only overlapped to graphene only on a minimal overlapping area, good electric connection or ohmic contact can be achieved, most of the metal electrode makes contact with the substrate, and the problem that the printing adhesive force of the metal paste on the graphene thin film is poor is solved.

Description

technical field [0001] The invention relates to the field of touch screen sensors, in particular to a method for manufacturing a graphene touch screen sensor. Background technique [0002] In the current mobile phone touch screen manufacturing industry, ITO (indium tin oxide) is the main conductive material for screen sensors. The ITO conductive film commonly used in the market is made by depositing ITO on plastic (usually PET (polyethylene glycol phthalate)) or glass substrates by using a coating process, and then directly printing silver paste on the ITO conductive film, Metal conductive materials such as copper paste are used to form sensors. At this time, the printed metal conductive film and ITO film have good adhesion, which can meet the technical requirements of touch screen sensor manufacturing. [0003] Graphene is a single-atom-layer two-dimensional crystal in which carbon atoms are tightly packed in a hexagonal structure. In addition to its excellent optical, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
Inventor 杨军谭化兵
Owner WUXI GRAPHENE FILM
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