Many of the electronic products used by everyone are using resistive touch screens, which is the popular trend of electronic products in the future. Next, Tianxianwei Technology will introduce to you what is a resistive touch screen and what is the working principle of a resistive touch screen?
A resistive touchscreen is a sensor that converts the physical location of the touch point (X,Y) in a rectangular area into a voltage representing the X and Y coordinates. Many LCD modules use resistive touch screens, which can use four-wire, five-wire, seven-wire or eight-wire to generate the screen bias voltage and read back the voltage of the touch point at the same time.
How Resistive Touch Screens Work
The working principle of the resistive touch screen is mainly to realize the operation and control of the screen content through the principle of pressure sensing. The screen body part of this touch screen is a multi-layer composite film that is very compatible with the display surface. The first layer is glass or plexiglass. The bottom layer, the second layer is the partition layer, the third layer is the multi-component resin surface layer, and the surface is also coated with a transparent conductive layer, which is covered with a hardened, smooth and scratch-resistant plastic layer on the outer surface. The conductive layer and glass layer sensor on the surface of the polyester surface layer are separated by many tiny spacers. The current passes through the surface layer. When the surface layer is touched lightly, it touches the bottom layer, and the controller reads the corresponding current and Calculate the distance of the finger position.
This touch screen uses two highly transparent conductive layers to form a touch screen, and the distance between the two layers is only 2.5 microns. When the finger touches the screen, the two conductive layers that are usually insulated from each other have a contact at the touch point. Because one of the conductive layers is connected to the 5V uniform voltage field in the Y-axis direction, the voltage of the detection layer changes from zero to If it is not zero, after the controller detects this connection, it performs A/D conversion and compares the obtained voltage value with 5V to obtain the Y-axis coordinate of the touch point. Similarly, the X-axis coordinate is obtained. It is the most basic principle common to all resistive technology touch screens.
After reading the above introduction, you must already know what a resistive touch screen is. Now resistive touch screen has been widely used in computers, mobile phones and other products.
Many of the electronic products used by everyone are using resistive touch screens, which is the popular trend of electronic products in the future. Next, Tianxianwei Technology will introduce to you what is a resistive touch screen and what is the working principle of a resistive touch screen?
A resistive touchscreen is a sensor that converts the physical location of the touch point (X,Y) in a rectangular area into a voltage representing the X and Y coordinates. Many LCD modules use resistive touch screens, which can use four-wire, five-wire, seven-wire or eight-wire to generate the screen bias voltage and read back the voltage of the touch point at the same time.
How Resistive Touch Screens Work
The working principle of the resistive touch screen is mainly to realize the operation and control of the screen content through the principle of pressure sensing. The screen body part of this touch screen is a multi-layer composite film that is very compatible with the display surface. The first layer is glass or plexiglass. The bottom layer, the second layer is the partition layer, the third layer is the multi-component resin surface layer, and the surface is also coated with a transparent conductive layer, which is covered with a hardened, smooth and scratch-resistant plastic layer on the outer surface. The conductive layer and glass layer sensor on the surface of the polyester surface layer are separated by many tiny spacers. The current passes through the surface layer. When the surface layer is touched lightly, it touches the bottom layer, and the controller reads the corresponding current and Calculate the distance of the finger position.
This touch screen uses two highly transparent conductive layers to form a touch screen, and the distance between the two layers is only 2.5 microns. When the finger touches the screen, the two conductive layers that are usually insulated from each other have a contact at the touch point. Because one of the conductive layers is connected to the 5V uniform voltage field in the Y-axis direction, the voltage of the detection layer changes from zero to If it is not zero, after the controller detects this connection, it performs A/D conversion and compares the obtained voltage value with 5V to obtain the Y-axis coordinate of the touch point. Similarly, the X-axis coordinate is obtained. It is the most basic principle common to all resistive technology touch screens.
After reading the above introduction, you must already know what a resistive touch screen is. Now resistive touch screen has been widely used in computers, mobile phones and other products.
