Capacitance touch panel utilizing traditional resistive films

Abstract

The invention discloses a capacitance touch panel utilizing traditional resistive films, and belongs to the field of capacitance touch panels. The capacitance touch panel comprises a display screen and a nanometer indium tin metallic oxide ITO sensor, wherein the display screen is used for displaying images, and the ITO sensor is arranged on the display screen and used for sensing a touch control point. A film plated with ITO on the whole surface is processed into an ITO film with specific ITO graphs through a printing or etching process by means of the ITO sensor, the ITO sensor is made of the resistive films which are high surface resistance value resistive films, and the resistance value of the high surface resistance value resistive films is larger than or equal to 270 ohms. The ITO sensor is provided with a cover lens protecting the ITO sensor, and the cover lens and the ITO sensor are adhered together through optical double faced adhesive tape. The capacitance touch panel obviously lowers cost of raw material, greatly improves optical performance of products, and brings benefits to enterprises.

Description

technical field [0001] The invention relates to a capacitive touch screen, in particular to a capacitive touch screen using a traditional resistive film. Background technique [0002] Touch screens are composite touch screens used in electronic products such as mobile phones, e-books, and digital cameras, among which capacitive touch screens are the most commonly used type of touch screens. [0003] The capacitive touch screen uses the current induction of the human body to work. The capacitive touch screen is usually a four-layer composite glass screen. The inner surface and interlayer of the glass screen are each coated with a layer of ITO (coated conductive glass), and the outermost layer is A thin layer of silica glass protective layer, ITO coating as the working surface, four electrodes are drawn from the four corners, and the inner layer of ITO is the shielding layer to ensure a good working environment; when the user's finger touches the capacitive touch screen At th...

AI Technical Summary

Problems solved by technology

[0006] 1. Using a capacitive film with low surface resistance as a touch sensor, the resistive layer is thick, resulting in low etching efficiency and high cost;

[0007] 2. The conductive layer of the ITO film is thicker, which affects the light transmittance, thus affecting the overall optical performance

[0008] The invention patent with the application number US2010139955A1 points out that the conductive layer includes indium tin oxide, and the conductive layer has a surface resistivity of less than 20 ohms. In the manufacture of the patterned substrate of the touch screen sensor component, a capacitive film with low surface resistance is used as a touch screen For the sensor, the resistive layer is thicker, resulting in low etching efficiency, high cost, and affects the light transmittance, thus affecting the overall optical performance

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