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Manufacture method of OCA (optics clarity adhesive) substrate graphene touch screen

A production method and graphene technology, applied in chemical instruments and methods, lamination auxiliary operations, data processing input/output process, etc., can solve the problems of complex production process and thick touch screen, so as to avoid softening and save process , Improve the effect of light transmittance

Inactive Publication Date: 2017-05-31
CHONGQING GRAPHENE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can meet the production requirements of graphene capacitive screens to a certain extent, there are still defects in that the production process is complicated and the thickness of the prepared touch screen is relatively thick.

Method used

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  • Manufacture method of OCA (optics clarity adhesive) substrate graphene touch screen

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of manufacture method of OCA substrate graphene touch screen, comprises the steps:

[0027] 1) Graphene is grown on both sides of the growth substrate. The thickness of the growth substrate in this embodiment is 1 um, and the growth substrate is made of transition metal, and the transition metal in this embodiment is copper.

[0028] 2) Tear off the light release film of the OCA adhesive layer, and evenly bond it with the graphene layer with the growth substrate, remove the original growth substrate, and transfer the graphene layer to the touch screen carrier On the OCA adhesive layer, a graphene carrier film is obtained; the method for separating the growth substrate and the graphene layer adopts chemical etching, electrochemical method or mechanical stripping method, and the method for separating the growth substrate and the graphene layer of the present embodiment using chemical etching.

[0029] 3) screen printing silver paste on the graphene layer of graph...

Embodiment 2

[0034] A kind of manufacture method of OCA substrate graphene touch screen, comprises the steps:

[0035] 1) Graphene is grown on both sides of the growth substrate. The thickness of the growth substrate in this embodiment is 100 um, and the growth substrate is made of transition metal, and the transition metal in this embodiment is nickel.

[0036] 2) Tear off the light release film of the OCA adhesive layer, and evenly bond it with the graphene layer with the growth substrate, remove the original growth substrate, and transfer the graphene layer to the touch screen carrier On the OCA adhesive layer, a graphene carrier film is obtained; the method for separating the growth substrate and the graphene layer adopts chemical etching, electrochemical method or mechanical stripping method, and the method for separating the growth substrate and the graphene layer of the present embodiment By electrochemical method.

[0037] 3) screen printing silver paste on the graphene layer of ...

Embodiment 3

[0042] A kind of manufacture method of OCA substrate graphene touch screen, comprises the steps:

[0043] 1) Graphene is grown on both sides of the growth substrate. The thickness of the growth substrate in this embodiment is 1mm, and the growth substrate is made of transition metal, and the transition metal in this embodiment is copper.

[0044] 2) Tear off the light release film of the OCA adhesive layer, and evenly bond it with the graphene layer with the growth substrate, remove the original growth substrate, and transfer the graphene layer to the touch screen carrier On the OCA adhesive layer, a graphene carrier film is obtained; the method for separating the growth substrate and the graphene layer adopts chemical etching, electrochemical method or mechanical stripping method, and the method for separating the growth substrate and the graphene layer of the present embodiment adopts Mechanical peeling method.

[0045] 3) screen printing silver paste on the graphene layer...

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Abstract

The invention discloses a manufacture method of an OCA (optics clarity adhesive) substrate graphene touch screen; the manufacture method comprises the steps of 1) growing graphene on two sides of a growth substrate; 2) peeling off a light release film of an OCA layer, applying evenly to a graphene layer with the growth substrate, and removing the original growth substrate so that the graphene layer is transferred to the OCA layer acting as a touch screen carrier to obtain graphene carrier film; 3) silk-screening silver paste on the graphene layer of the graphene carrier film, and curing the silver paste by UV (ultraviolet) means; 4) etching the graphene carrier film to obtain a single-layer multipoint touch pattern and sliver paste wiring; 5) peeling off a heavy lease film of the OCA layer of the graphene carrier film, attaching optical PET (polyethylene terephthalate) to the OCA layer to obtain a graphene-PET substrate; 6) binding a flexible circuit board to the graphene layer of the graphene-PET substrate to obtain a graphene touch screen. OCA is used directly as a substrate, so that attaching steps are fewer and the thickness of PET is decreased.

Description

technical field [0001] The invention belongs to the technical field of touch screens, in particular to a method for manufacturing an OCA-based graphene touch screen. Background technique [0002] At present, the touch screen technology is developing vigorously, and the touch screen technology includes touch screens with sensing functions such as capacitive touch screens and resistive touch screens. The existing touch screen uses conductive and transparent ITO (indium tin oxide) coating on the substrate (including but not limited to glass, film, etc.), and then burns the circuit (process includes but not limited to etching, photolithography, etc.), and then Arrange electrodes around the ITO pattern (processes include but not limited to silk printing conductive paste, plating charged materials, etc.), and the sensor function sheet is bound to FPC (or bonded to lens) to form a capacitive touch screen. When a finger touches the metal layer, due to the electric field of the huma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044B32B37/12B32B38/00B32B38/14
CPCG06F3/044B32B37/12B32B38/00B32B38/10B32B38/145B32B2038/0076G06F2203/04103
Inventor 弋天宝赖华定邹敏蔡茂林王立昌潘洪亮
Owner CHONGQING GRAPHENE TECH
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