Film with low interference degree on sensitivity of capacitive screen and processing technology

Abstract

The invention discloses a film with low interference degree on the sensitivity of a capacitive screen and a processing technology. The formula comprises the following components: a quartz glass substrate, metal indium, ammonium carbonate, tin sulfate, nitric acid, tin chloride, alcohol, ammonia water, a catalyst and an additive, the mass percentage of each component is as follows: 15-25% of a quartz glass substrate, 20-30% of metal indium, 15-25% of ammonium carbonate, 10-20% of tin sulfate, 2-4% of nitric acid, 10-20% of tin chloride, 1-3% of alcohol, 5-10% of ammonia water, 0.5-1% of a catalyst and 0.5-1% of an additive; the preparation process comprises the following steps: step 1, selecting raw materials; step 2, solution mixing; step 3, coprecipitation processing; step 4, processing and screening; step 6, lifting the plating layer; step 6, high heat treatment; and step 7, packaging and storing. According to the invention, the ITO sol is prepared by adopting coprecipitation processing and ultrasonic reaction so that the quartz glass substrate and the ITO sol are fused more tightly, the conductivity of the capacitive screen film is improved, and the sensitivity of the capacitivescreen film is improved.

Description

technical field [0001] The invention relates to the technical field of capacitive screens, in particular to a film sticking and processing technology with low interference to the sensitivity of the capacitive screen. Background technique [0002] Capacitive screen, that is, capacitive touch screen technology, uses the current induction of the human body to work. The capacitive touch screen is a four-layer composite glass screen. When the finger touches the metal layer, due to the electric field of the human body, the user and the surface of the touch screen form a coupling capacitance. , the controller obtains the position of the touch point through accurate calculation of the current ratio; the traditional capacitive screen needs to be used with a film. After the film is pasted, due to the thickness and material of the film, the touch sensitivity is low when the user uses it, which is not conducive to the user. At the same time, because users like to use physical button plu...

AI Technical Summary

Problems solved by technology

[0002] Capacitive screen, that is, capacitive touch screen technology, uses the current induction of the human body to work. The capacitive touch screen is a four-layer composite glass screen. When the finger touches the metal layer, due to the electric field of the human body, the user and the surface of the touch screen form a coupling capacitance. , the controller obtains the position of the touch point through accurate calculation of the current ratio; the traditional capacitive screen needs to be used with a film. After the film is pasted, due to the thickness and material of the film, the touch sensitivity is low when the user uses it, which is not conducive to the user. At the same time, because users like to use physical button plug-ins when playing mobile games, the conductivity of physical button plug-ins is poor, which further reduces the sensitivity during use; in view of these defects, it is very important to design a film and processing technology with low interference to the sensitivity of the capacitive screen necessary

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