Why do so many FPC membrane key switches make membrane key switches, is it a wide range of applications or high profits?

The scope of application is relatively wide, and there are many such manufacturers. I know Kangde Electronics in Dongguan, and we have cooperated with them, which is not bad.

Introduction of membrane keys

Metaldomearray is a PET sheet with contacts (including metal shrapnel, also called dome), which is used as a switch on circuit boards such as PCB and FPC, and plays an important role between the user and the instrument. The role of the tactile switch. Compared with traditional silicone keys, membrane keys have better feel and longer life, which can indirectly improve the production efficiency of various types of switches using conductive films. The contacts on the membrane button are located on the conductive parts of the PCB (mostly above the gold fingers on the circuit board). When the button is pressed by an external force, the center point of the contact is concave and contacts the circuit on the PCB, thereby forming a The circuit, the current passes through, the whole product can work normally.

What is a membrane switch, membrane switch uses

Membrane switches have been widely used in electronic communication, electronic measuring instruments, industrial control, medical equipment, automotive industry, smart toys, household appliances and other fields.

Analyze the standard parameter information of membrane switch

What are the requirements of membrane switches for keys?

Chuangming membrane switch manufacturers analyze from two aspects: 1. For the structure of the membrane switch, the button is a very important part of it. Because the realization of the function of the membrane switch is to rebound by pressing the button, it can also be said that the function of the button is realized by the rebound of the shrapnel, so the membrane switch has requirements for the button. 2. The center point of the installed metal shrapnel must be aligned with the center point of the conductive circuit, and it must be fixed well, otherwise there will be poor contact and no conduction. However, the letters on the key display area on the panel layer are generally abbreviated in order to save space, and the size of the letters is generally no more than twice the size of the metal dome. If it is too large, the balance will be lost, and the precise position of the metal shrapnel will not be found during the operation.