Low-resistance ITO transparent conductive film

Abstract

The invention discloses a low-resistance ITO transparent conductive film. The ITO transparent conductive film sequentially comprises a flexible base material, a first transition layer, a high-refraction-index layer, a second transition layer, a metal layer and an ITO transparent conductive layer, wherein the refraction index of the high-refraction-index layer ranges from 2.0 to 2.4, the first transition layer is a transition metal layer or transition metallic oxide layer and used for increasing the binding force between the high-refraction-index layer and the flexible base material, and the second transition layer is a transition metal layer or transition metallic oxide layer and used for increasing the binding force between the high-refraction-index layer and the metal layer. According to the low-resistance ITO transparent conductive film, the electrical conductivity of a film system is greatly improved through interlayer doping, the ITO transparent conductive film can reach low resistance which an ITO film system of the same thickness can not reach, and the low-resistance ITO transparent conductive film can be applied to the fields of a large-area touch screen, an electromagnetic pulse shielding film and the like.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a low-resistance ITO transparent conductive film. Background technique [0002] In recent years, with the rapid development of semiconductor manufacturing technology and photovoltaic technology, technologies such as flat panel displays, touch screens, window films, polymer dispersed liquid crystals (PDLC), and solar cells have developed and improved rapidly. These new technologies need to be used The transparent conductive film is used as an electrode, a light-receiving surface, or an electromagnetic pulse shielding film. Taking a touch screen as an example, several commonly used types of touch screens, such as resistive touch screens, surface capacitive touch screens, and inductive capacitive touch screens, all require transparent conductive films as electrode materials. [0003] Transparent conductive films are generally defined as being transparent in the visible light range...

AI Technical Summary

Problems solved by technology

[0005] At present, there are still many technical problems in ITO. First, ITO is expensive. The indium in ITO is a non-renewable material. With the extensive use of ITO, it will be scarce. The use of indium should be reduced as much as possible to save resources.

Second, the sheet resistance of the ITO film is generally between 100-150Ω / □, which is already the limit value of the resistance value of a single-layer ITO film with good light transmittance. If the resistance is reduced by increasing the thickness, it will lead to transparent Reduced light rate and extensive use of indium materials

According to the previous research, it can be seen that the resistance of ITO transparent conductive films currently on the market is often high, or the film structure is all ITO films, which cannot meet the requirements of low resistance and high transparency while maintaining the use of less ITO materials. past request

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