Touch screen and preparation method thereof

A touch screen, adhesive layer technology, applied in the direction of instrument, electrical digital data processing, data processing input/output process, etc., can solve the problems of high preparation cost, poor durability, uneven resistance, etc., and achieve raw material cost and process cost. Low, good toughness and mechanical strength, the effect of improving sensitivity and accuracy

Active Publication Date: 2011-06-29
BEIJING FUNATE INNOVATION TECH
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  • Abstract
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  • Claims
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Problems solved by technology

However, as a transparent conductive layer, the ITO layer is usually prepared by ion beam sputtering or evaporation. During the preparation process, a high vacuum environment and heating to 200-300°C are required. Therefore, the preparation cost of the ITO layer is relatively high. high
In addition, after the ITO layer is continuously bent, the resistance at the bend increases. As a transparent conductive layer, it has the disadvantages of insufficient mechanical and chemical durability, and there is a phenomenon of uneven resistance and a small range of resistance values.
As a result, existing touch screens have disadvantages such as poor durability, low sensitivity, and poor accuracy.

Method used

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  • Touch screen and preparation method thereof
  • Touch screen and preparation method thereof

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preparation example Construction

[0059] The present invention provides a method for preparing the above-mentioned touch screen 10, the preparation method comprising the following steps: (w10) providing a substrate with a surface; (w20) forming an adhesive layer to be cured on the surface of the substrate; (w30 ) providing at least one carbon nanotube film; (w40) laying the at least one carbon nanotube film on the surface of the substrate to form a carbon nanotube layer covering the adhesive layer to be cured (w50) applying a pressure to the carbon nanotube layer so that the carbon nanotube layer is partially embedded in the adhesive layer to be cured, and the surface roughness Ra of the carbon nanotube layer is less than or equal to 0.1 micron; (w60) curing the adhesive layer; (w70) forming electrodes.

[0060] see Figure 8 , the preparation method of the touch screen 10 specifically includes the following steps:

[0061] In step (w10), firstly, a substrate 12 having a surface 121 is provided. Secondly, t...

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Abstract

The invention relates to a touch screen and a preparation method thereof. The touch screen comprises a transparent conducting layer, a gluing layer and a substrate; the transparent conducting layer comprises a carbon nano tube layer; the carbon nano tube layer is fixed on the substrate through the gluing layer; and the surface roughness Ra of the carbon nano tube layer is less than or equal to 0.1 microns. In a preparation method of the touch screen provided by the invention, the carbon nano tube layer is planished by a planishing tool to ensure that the surface roughness Ra of the carbon nano tube layer is less than or equal to 0.1 microns. The carbon nano tube layer has the characteristics of uniform resistance value distribution and high flexibility, so that the touch screen has high durability and sensitivity.

Description

technical field [0001] The invention relates to a touch screen and a preparation method thereof, in particular to a touch screen using carbon nanotubes and a preparation method thereof. Background technique [0002] In recent years, along with the high performance and diversification of various electronic devices such as mobile phones and touch navigation systems, the number of electronic devices in which a light-transmitting touch panel is mounted on the front of a display device such as a liquid crystal is increasing. A user of such an electronic device performs operations by pressing the touch panel with a finger, a pen, or the like while visually confirming display contents of a display device located on the back of the touch panel through the touch panel. Thereby, various functions of the electronic device can be operated. [0003] According to different working principles and transmission media of touch screens, existing touch screens are divided into four types, name...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044G06F3/045
CPCG06F3/041G06F3/0444
Inventor 冯辰
Owner BEIJING FUNATE INNOVATION TECH
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