What kind of Touch screen Panel is divided into?（Classified by working principles）

What kind of Touch screen Panel is divided into?With the rapid development of technology, Touch screen Panel technology has been widely used in various electronic devices, such as smartphones, tablets, and self -service terminals.The touch screen not only improves the convenience of user operation, but also greatly enriches the way of human -computer interaction.This article will introduce several main types of Touch screen Panels in detail, including resistance, capacitive induction, infrared, and surface sound wave type touch screens, and explore their respective working principles, advantages and disadvantages and application scenarios.

1. Basic classification of Touch screen Panel

1. Classification according to working principles and transmission information media

The touch screen can be divided into the following four according to its working principle and transmission information:

Resistance Touch screen Panel

The resistance touch screen is one of the earliest touch screen techniques.It consists of two layers of transparent conductive membranes, which is separated by a small gap between the two layers to form a capacitor.When the user touches the screen with his fingers or touching a pen, the upper and lower layers of conductive membranes will be exposed to change the flow of the current, thereby detecting the position of the touch action.The resistance touch screen has high accuracy and sensitivity, which can support multi -touch, but its outer film is easily scratched and the light transmission rate is low.

Capacitor sensing Touch screen Panel

Capacity sensing touch screen is a touch screen technology that uses the current of the human body.It consists of a layer of glass surface covering a layer of transparent conductive film.When the user touches the screen with his fingers, the human charge will cause the charge of the conductive layer to detect the touch position.Capacitor touch screens have the advantages of high accuracy, fast response speed, and good resistance to scratch. They support multi -touch and have a high light transmission rate.However, it is not sensitive to non -conductive objects (such as gloves or pens), and when the ambient temperature and humidity change, it may cause drift and cause inaccurate.

Infrared Touch screen Panel

The infrared touch screen is installed in front of the monitor. A circuit board frame is installed. The circuit board is in the infrared transmission tubes and infrared receiving tubes on the four sides of the screen.When the user touchs the screen, the finger will block the horizontal and vertical two infrared rays of the position, so as to determine the position of the touch point on the screen.The price of infrared touch screen is low in price, easy to install, but the resolution is low, and it is easily disturbed by light.

Surface sound wave type Touch screen Panel

Surface sound wave -type touch screen uses ultrasonic sensors to form sound waves to detect the touch position.The touch screen can be a glass tablet with a flat, spherical or column surface, which is installed in front of the display screen.When the fingers touch the screen, the finger absorbs part of the sound wave energy, and the controller detects the attenuation of the receiving signal at a certain moment, thereby calculating the position of the touch point.The surface sound wave touch screen has high reliability and durability, supports multi -touch, and has a high light transmission rate.However, it is more sensitive to dust, water and dirt, and needs to be maintained frequently to keep the screen smooth.