Multi-point touch screen based on piezoelectric materials

Abstract

The invention discloses a multi-point touch screen based on piezoelectric materials. The multi-point touch screen based on piezoelectric materials comprises an upper substrate, a lower substrate, a plurality of piezoelectric material modules and a control module which is used for calculating coordinates of touch points according to acquired transient electric potential difference and positioning marks of the piezoelectric material modules. The piezoelectric material modules are arranged between the upper substrate and the lower substrate in a matrix array mode and are all connected with the control module. The touch screen has the advantages that the touch screen is attractive, reduces energy consumption and has no special requirements for the material and the shape of an object touching the screen, and operating convenience and flexibility are high. The multi-point touch screen based on piezoelectric materials can be widely applied in the field of touch screens.

Description

technical field [0001] The invention relates to a touch screen, in particular to a piezoelectric material-based multi-point touch screen. Background technique [0002] With the development of information technology, human-computer interaction methods are not limited to traditional methods such as mouse, keyboard, and monitor. More convenient, fast and intuitive methods are affecting our lives. Among them, the touch screen is the most commonly used new type of human-computer interaction. One of the interactive methods has developed rapidly in the past 20 years. Currently, according to the types of sensors, the touch screens are generally classified into four types of touch screens: capacitive touch screens, resistive touch screens, infrared touch screens and surface acoustic wave touch screens. However, these currently commonly used touch screens all have many disadvantages, for example: 1. For surface acoustic wave touch screens and infrared touch screens, because their rea...

AI Technical Summary

Problems solved by technology

However, these currently commonly used touch screens all have many disadvantages, for example: 1. For surface acoustic wave touch screens and infrared touch screens, because their realization needs to occupy the space on the display screen, this will make the appearance not as good as the thin film touch screen. ; 2. For capacitive touch screens and resistive touch screens, they need to scan the screen regularly to achieve touch detection, which will cause more energy consumption; 3. The capacitive touch screen is the most concerned type of touch screen now. However, it determines the position of the finger touch based on the capacitance change on the surface of the touch screen. Therefore, the object used for touch must be a conductor, and the insulator material cannot make it respond when touching its surface. For example, in cold winter, After wearing gloves, the capacitive touch screen cannot be used to realize the operation, and the convenience and flexibility of the operation are low

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