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Monolithic capacitive touch screen and preparation method thereof

A capacitive touch screen, monolithic technology, applied in the direction of electrical digital data processing, instrumentation, data processing input/output process, etc. The effect of improving yield, improving uniformity, and high reliability

Active Publication Date: 2013-01-16
WUXI GRAPHENE FILM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, for the OGS touch screen based on ITO transparent conductive film, the preparation process includes glass hardening, ITO coating, black film, yellow photolithography, metal coating, wet etching and special-shaped cutting, etc., especially the final special-shaped cutting process. The rate is low, resulting in a high overall production cost
To solve the problem of increased production cost caused by low yield of special-shaped cutting, the most direct way is to put the "special-shaped cutting" step after the "glass hardening" step and before the "ITO coating" step, but the glass cover after special-shaped cutting board, the size is small, it is not suitable to match the large size ITO yellow light process
Therefore, the existing technology based on ITO transparent conductive film is difficult to solve the problem of production cost, which constitutes a contradiction between maintaining the mechanical strength of the cover plate and reducing production cost

Method used

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  • Monolithic capacitive touch screen and preparation method thereof
  • Monolithic capacitive touch screen and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0078] A capacitive touch screen structure based on a graphene film comprises: a single substrate 1; a non-window ink area 2; a window touch area 3; a lead area 4; a paste controller area 5, wherein the window touch area 3 and the lead area 4 All the electrodes are graphene electrodes, and the electrodes in the lead area 4 are collected into the paste controller area 5, and the external structure is connected through the controller. figure 1 It is a schematic diagram of the appearance of the capacitive touch screen substrate of the present invention. figure 1 The pasting control area 5 only marks the placement position of the controller on the capacitive touch screen.

[0079] The preparation method of the capacitive touch screen based on graphene film comprises the steps:

[0080] (1) Cleaning the transparent monolithic substrate 1;

[0081] (2) A non-window ink area 2 is formed around the transparent monolithic substrate 1, and the middle area surrounded by the non-window ...

Embodiment 2

[0100] A capacitive touch screen structure based on a graphene film comprises: a single substrate 1; a non-window ink area 2; a window touch area 3; a lead area 4, wherein the electrodes in the window touch area 3 are all graphene, and the lead area 4 The electrodes are silver paste electrodes.

[0101] The preparation method of the capacitive touch screen based on graphene film comprises the steps:

[0102] (1) Cleaning the transparent monolithic substrate 1;

[0103] (2) A non-window ink area 2 is formed around the transparent monolithic substrate 1, and the middle area surrounded by the non-window ink area 2 is the area of ​​the window touch area 3;

[0104] (3) Making and patterning the silver paste lead electrodes in the lead area 4;

[0105] (4) transfer the graphene to the transparent monolithic substrate 1, covering the area of ​​the window touch area 3;

[0106] (5) Patterning the graphene covered on the area of ​​the window touch area 3, so that the graphene on th...

Embodiment 3

[0111] A capacitive touch screen structure based on a graphene film comprises: a single substrate 1; a non-window ink area 2; a window touch area 3; a lead area 4, wherein the electrodes of the window touch area 3 and the lead area 4 are graphene electrode.

[0112] The preparation method of the capacitive touch screen based on graphene film comprises the steps:

[0113] (1) Cleaning the transparent monolithic substrate 1;

[0114](2) A non-window ink area 2 is formed around the transparent monolithic substrate 1, and the middle area surrounded by the non-window ink area 2 is the area of ​​the window touch area 3;

[0115] (3) transfer the graphene to the transparent monolithic substrate 1, covering the entire non-window ink area 2 and window touch area 3;

[0116] (4) patterning the graphene covered on the area of ​​the window touch area 3, so that the graphene on the area of ​​the window touch area 3 forms an electrode of the window touch area 3;

[0117] (5) patterning t...

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Abstract

The invention relates to a monolithic capacitive touch screen and a preparation method thereof. The monolithic capacitive touch screen comprises a monolithic substrate (1), a non-window printing ink area (2), a window touch area (3) and a lead area (4), wherein the non-window printing ink area (2) is arranged around on the monolithic substrate (1), and encloses the window touch area (3); the lead area (4) is arranged on the non-window printing ink area (2); and an electrode material of the window touch area (3) is a graphene transparent conductive thin film. According to the preparation method for the touch screen, tampered glass can be favorably manufactured, the strength maintenance capability and stability of the tempered glass are improved, and in addition, the light transmittance and impedance uniformity of a sensing electrode of the touch area can be remarkably improved; and a yellow light preparation process is eliminated, and only laser direct writing etching or a metal mask and reactive ion etching are adopted, so that a manufacturing process is convenient, quick and high in efficiency.

Description

technical field [0001] The present invention relates to a monolithic capacitive touch screen, in particular to a graphene film-based monolithic capacitive touch screen, and further relates to a monolithic capacitive touch screen using graphene transparent conductive film as an electrode material and a preparation method thereof, It belongs to the technical field of touch screens. Background technique [0002] The touch screen is an input device that can facilitate the interaction between people and computers and other portable mobile devices. In recent years, capacitive touch screens based on indium tin oxide (ITO) transparent conductive films have been widely used in mobile Internet devices, such as smartphones and portable tablet computers. [0003] As mobile Internet devices have higher and higher requirements for screen reflectivity, light transmittance, and thickness, capacitors that are traditionally made of double-sheet glass (high-hardness glass cover and glass with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 谭化兵王振中熊维龙林荣水卞维军黄海东
Owner WUXI GRAPHENE FILM
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