The resistance screen, the full name is a resistor touch screen, is a sensor. It is widely used in the touch screen of the mobile phone. The touch screen of the mobile phone is divided into resistance screens and capacitor screens. Earlier smart phones are used to use resistance screens.The price is low, and the screen is not affected by dust, water vapor and oil. It can be used in a lower or higher temperature environment. The resistance screen that we know is more familiar with the Nokia 5230.
Resist screen failure
The first thing to do is to check when the mobile phone fails because of the hardware reasons or the software. If it is software, it is recommended that you often flash the machine, update the software, and regularly calibrate the mobile phone.Looking at the damage, some friends may be because they are too hard to put the screen in the screen. At this time, you can try to disassemble your mobile phone by yourself, loosen the front case of the mobile phone to avoid pressing the touch screen too tight.Recently, the editor saw a new method recommended by a friend. Friends who reported the abolition of the horse as a live horse doctor can try it. The specific operation steps are as follows: the resistance screen must be used;First of all, we must ensure the safety of the personality; if the electric shock is turned on.
Resist screen principle
The principle of resistance screen is mainly pressure sensation.Because the screen part of the resistance screen is a multi -layer composite film that fits the surface of the display, in turn is the bottom layer of the glass or organic glass, the compartment and the multi -resin surface layer.It is the plastic layer that is directly touched by hardening and smooth scratch.When you touch the surface layer, you can touch the bottom layer. At this time, the controller will read the current -called current from the four corners and calculate the distance of the finger position to achieve the touch.The distance between the two layers of the resistance screen is only 2.5 microns.When we touch the screen, the two -layer conductive layer that is usually insulating will be exposed to the touch point position. One of them will connect the 5V uniform voltage field of the Y -axis direction, so that the voltage of the detection layer will change from zero to zero to toNon -zero, after the controller detects this connection, performs A/D conversion, and compares the obtained voltage value with 5V, you can get the y -axis coordinate of the touch point.Put the touch on the screen.
The difference between resistance screen and capacitor screen
The capacitor is high -level than the resistance, the capacitance can be touched more, the screen is hard, the resistance is nails, and the pen can be used, but the capacitance must be used, because it is warm and requires conductive body.

Related tags： Machinery