Low-impedance capacitive touch screen and manufacturing method thereof

A technology of capacitive touch screen and manufacturing method, which is applied in the direction of electrical digital data processing, instrumentation, input/output process of data processing, etc., can solve the problems of affecting touch sensitivity, high impedance of touch electrodes, and product performance not worth the loss, etc. Achieve the effect of low production fine requirements, simple process realization, and favorable product yield

Inactive Publication Date: 2014-12-17
QUANZHOU SHENGWEI ELECTRONICS TECH CO LTD
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Problems solved by technology

[0003] However, one disadvantage of ITO is that its sheet resistance is relatively large, which leads to relatively large impedance of ITO as a touch electrode, which directly affects the sensitivity of touch, thus limiting the application of ITO materials in large-size touch screens, even in small and medium-sized, Application of low impedance touch screen
Although the sh

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  • Low-impedance capacitive touch screen and manufacturing method thereof
  • Low-impedance capacitive touch screen and manufacturing method thereof
  • Low-impedance capacitive touch screen and manufacturing method thereof

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Embodiment Construction

[0028] The present invention reduces the impedance of the touch electrode by combining the metal wire on the touch layer, thereby improving the touch sensitivity. The material of the metal wire can be metal, or non-metal with high electrical conductivity, such as carbon nanotubes, conductive polymers and the like.

[0029] The shape and structure of the metal wire is not limited, and it may be a thin wire, a thick wire, an irregular curve or a closed curve of any shape, and the like. It is mainly arranged on the touch electrode, which has the greatest effect on improving the touch sensitivity. However, the arrangement of the metal wire is not limited to the touch electrode, it can also be used as a short-circuit connection between separated graphics in the touch graphics, that is, the two ends of the same metal wire are respectively lapped on different sides of each other. On the two touch layer materials that are in contact, the short circuit between the two is realized. Si...

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Abstract

The invention discloses a low-impedance capacitive touch screen and a manufacturing method thereof. A metal wire in direct contact with a transparent touch control layer or in indirect contact with the transparent touch control layer through a conductive transition layer is arranged above or below the transparent touch control layer, so that the aim of reducing the touch control electrode impedance through metal is achieved; the problems that the transparent touch control electrode impedance is overlarge so as to affect the touch and control flexibility, and the transparent touch control electrode cannot be applied to large-scale touch screen products are solved; the application range of transparent conductive materials with poor conductivity is expanded. For processing and manufacturing, the low-impedance capacitive touch screen is simple in structure, simple and convenient in manufacture procedure, and low in cost.

Description

technical field [0001] The invention relates to a manufacturing process of a capacitive touch screen, in particular to a low-impedance capacitive touch screen and a manufacturing method thereof. Background technique [0002] In the current capacitive screen manufacturing technology, the transparent conductive material indium tin oxide (ITO) is widely used in the touch screen field due to its conductive performance and high transmittance. [0003] However, one disadvantage of ITO is that its sheet resistance is relatively large, which leads to relatively large impedance of ITO as a touch electrode, which directly affects the sensitivity of touch, thus limiting the application of ITO materials in large-size touch screens, even in small and medium-sized, low impedance touch screen applications. Although the sheet resistance can be reduced by increasing the film thickness of ITO, such an approach will increase the production cost and production time, and more importantly, the t...

Claims

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Application Information

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IPC IPC(8): G06F3/044
Inventor 陈祖辉郭太良林金堂蔡怀清林玉辉
Owner QUANZHOU SHENGWEI ELECTRONICS TECH CO LTD
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