Keyboards are generally divided into three types: membrane keyboards, mechanical keyboards, and electrocapacitive keyboards.
Membrane keyboard
The membrane keyboard is composed of four parts: the panel, the upper circuit, the isolation layer, and the lower circuit, which is characterized by small sound, light weight, and low price, and is mainly used in the office field.
Structure
The structure of the membrane keyboard is relatively simple, and when the keycaps and panel covers are removed, the rubber cap and three membrane circuit boards of the keyboard are visible.
Working Principle
The working principle is also very simple, in the three thin film circuit boards, the top is the positive circuit, the bottom is the negative circuit, and the middle is a non-conductive plastic sheet, when our fingers press down, the upper and lower film sheets will contact the power and complete the conduction.
Disadvantage
But at the same time, the disadvantage of membrane keyboards is also obvious, that is, it is easy to wear out. Due to the dry structure, the key life of the membrane keyboard is low, and the degradation of the feel is also very obvious after long-term use, and the keys will become very hard. In addition, membrane keyboards also have common key conflicts, so it can be troublesome to do some complex games
Mechanical keyboard
The mechanical keyboard is the product of the kind of switch body and PCB circuit board connection, and then the trigger is the spring and sheet to form the switch and close, and the service life is very long.
Loved features for gamers
The mechanical keyboard is similar to a metal contact switch, each key is an independent mechanical switch, and the switch is controlled by a metal spring, so there will be no aging phenomenon after a long time, and the service life is relatively long. The mechanical keyboard has a super good tapping feel, and the full key is conflict-free, and a variety of switches can be selected, which is loved by the majority of gamers and enthusiasts.
Working Principle
The principle of capacitive triggering is similar to that of a mechanical keyboard, but it is actually a little different, it is not a general paddle switch and close, but a capacitive trigger, which theoretically has a longer life.
The difference is in the dry feel, the electrostatic capacitance feel is not as strong as the mechanical feel, and the natural full button has the advantage of no conflict.
Capacitance Keyboard
The capacitance keyboard is the use of the change of power to control the switch of the key, after pressing the key, the air capacitance capacity in the conductive glue changes, so as to achieve the trigger, the whole process can be used without physical contact points to achieve the normal tapping of the keyboard.