Dongguan LuPhi Electronics Technology Co., Ltd.
Since people invented electrical appliances, switches have emerged. For nearly a century, people have been researching switch panels in the production, control, and use of electric energy. As a result, a variety of different switches have been born. Today, Xiaobian is here to tell you a switch panel, called a membrane switch panel. This kind of switch is popular among the people because of its compact size, comfortable pressing, easy replacement and low cost.
What is a membrane switch panel?
The membrane switch panel is an operating system that integrates the button function, the indicator component, and the instrument panel. It consists of four parts: panel, upper circuit, isolation layer and lower circuit. When the membrane switch is pressed, the contact of the upper circuit is deformed downward, and the contact with the plate of the lower circuit is turned on. After the finger is released, the upper circuit contact bounces back, the circuit is disconnected, and the circuit triggers a signal. The membrane switch has a rigorous structure, beautiful appearance and good sealing performance. It has anti-moisture and long service life. Widely used in electronic communication, electronic measurement instruments, industrial control, medical equipment, automotive industry, smart toys, household appliances and other fields.
Membrane switch panel working principle
When the panel is not pressed, the membrane switch is in a normal state, the upper and lower contacts are in an open state, and the isolation layer isolates the upper and lower lines; when the panel is pressed, the contacts of the upper circuit are deformed downward. Re-merging with the lower line to make the line conduct, the line after the conduction signals the externally connected instrument (substrate) to realize its corresponding function; when the finger is released, the upper circuit contact bounces back and the circuit is disconnected. The loop triggers a signal.
Membrane switch panel use
Membrane switch panels are widely used in intelligent medical instruments, electronic measuring instruments, CNC machine tools, computer control, copiers, postal and telecommunications, microwave ovens, refrigerators, washing machines, electric fans, electronic game machines and other household appliances and various industrial goods.
Membrane switch panel advantages
The membrane switch panel is also novel and beautiful in appearance. Secondly, it is light in weight, small in size and thin in thickness. It is more conducive to the short, thin, light and high intelligence of the notebook computer keyboard. It is oil-proof, dust-proof and moisture-proof. Harmful gas, acid and alkali resistant to shock and sealing, resistance to tortuosity, long service life, its use can usually reach more than one million times, the switch contacts are straight touch, the wear is very small; and the screen printing The contacts can be formed to a satisfactory thickness, and a layer of conductive carbon is printed on the silver paste contacts to achieve high wear-resistant self-lubricating intention, so that the life of the membrane switch is several dozen times higher than that of the mechanical contact switch. .
Due to the novel design of the membrane switch panel and low production cost, it is now widely used in portable calculators and home remote controls. In addition, the membrane switch panel consumes a relatively low amount of electrical energy, so that a battery in the home remote can last for a year or two.