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Touch screen and display device

一种显示装置、触摸屏的技术，应用在绝缘载体上的导电层、纳米技术、仪器等方向，能够解决阻值分布不均匀、线性及准确性差、透明度下降等问题，达到提高分辨率和精确度、好韧性和机械强度、均匀阻值分布的效果

Active Publication Date: 2009-06-17
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 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, as a transparent conductive layer, the ITO layer has disadvantages such as insufficient mechanical properties, difficulty in bending, and uneven resistance distribution.
In addition, the transparency of ITO will gradually decrease in humid air
As a result, existing resistive touch screens and display devices have shortcomings such as insufficient durability, low sensitivity, poor linearity and accuracy.

Method used

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preparation example Construction

[0024] The preparation method of the ordered carbon nanotube film used in the first conductive layer 122 and the second conductive layer 142 of this embodiment mainly includes the following steps:

[0025] Step 1: providing a carbon nanotube array, preferably, the array is a super-aligned carbon nanotube array.

[0026] The carbon nanotube array provided in the embodiment of the technical solution is a single-wall carbon nanotube array, a double-wall carbon nanotube array or a multi-wall carbon nanotube array. In this embodiment, the preparation method of the super-parallel carbon nanotube array adopts the chemical vapor deposition method, and its specific steps include: (a) providing a flat substrate, which can be a P-type or N-type silicon substrate, or a silicon substrate formed with The silicon base of oxide layer, present embodiment preferably adopts the silicon base of 4 inches; (b) uniformly form a catalyst layer on the base surface, this catalyst layer material can be ...

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Abstract

The invention relates to a touch screen comprising a first electrode board which comprises a substrate and a second conductive layer arranged on the lower surface of the first substrate; a second electrode board which is arranged at interval with the first electrode board and comprises a second substrate and a second conductive layer arranged on the upper surface of the second substrate; two first electrodes and two second electrodes; wherein, the two firsts and the two second electrodes are arranged at interval and are electrically connected with the second conductive layer wherein, at least one conductive layer of the first conductive layer and the second conductive layer comprises a carbon nano tube layer. Moreover, the invention also relates to a display apparatus using the touch screen, the display apparatus comprises a touch screen and a display device.

Description

technical field [0001] The invention relates to a touch screen and a display device using the touch screen, in particular to a carbon nanotube-based touch screen and a display device using the touch screen. 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, there has been an increase in the number of electronic devices in which light-transmitting touch panels are mounted on the front of display elements such as liquid crystals. Users of such electronic devices operate by pressing the touch panel with fingers or a pen while visually confirming the display content of the display element 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 usually divide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/045H01H13/704B32B33/00B32B9/00B82B1/00
CPCG06F3/045B82Y30/00G06F3/0412G06F2203/04103H01B5/14
Inventor 姜开利刘亮范守善
Owner TSINGHUA UNIV
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