In our daily life, we often see a very strange phenomenon on some machines, that is, there are no key switches on the entire machine. When you touch a hidden area, or touch a location with characters or patterns, the machine is turns on. At this time, the name and location of the luminous buttons will be displayed on the surface. It is very beautiful, and it also looks particularly mysterious and has a strong sense of technology.
The surface key area of this type of product is made of ABS or PC plastic shell, or a whole piece of PMMA acrylic panel, or a whole piece of tempered glass panel, and the buttons with character patterns are made into a translucent effect. When the machine is turned off, the LED inside the machine does not emit light, the machine is dark inside, and the characters or patterns on the panel cannot be seen from the outside. When turned on, the LED emits light from the inside, and the light is emitted from the position of the characters or patterns, while other positions are opaque, thereby displaying the complete keys.
A printed FPC flexible capacitive touch sensing circuit board is attached to the back of the panel, and the functions of all buttons are transmitted through this flexible circuit board. Each button has a wire running from the main circuit board to the button area. The button is similar to one electrode of a capacitor, and the other electrode is connected to the main circuit board IC. When a finger approaches a button from a distance and then touches the button, the IC can sense this change and know which button the finger touched, and then issue corresponding instructions to make the machine work.
Capacitive touch key switches can penetrate insulating material shells within 8mm, including but not limited to ABS, PC, PMMA, glass and other materials. Accurately detect effective finger touches and ensure the sensitivity, stability and reliability of the product. Because touch buttons do not require drilling on the product casing like traditional buttons, the sealing and waterproof and dustproof performance of this kind of switch are better than traditional buttons. Also because there is no mechanical movement of traditional mechanical switches, touch key switches have no friction loss, perform better in terms of sensitivity, stability and reliability, have a longer service life than ordinary mechanical switches, and have low maintenance costs in the future.
Capacitive touch sensing proximity switches have been widely used in audio panels, telephone control keyboards, instrument control panels, washing machine control panels, intelligent access control system control panels, various small household appliance panels (such as induction cookers, disinfection cabinets, microwave ovens) and other products. Covering almost all application fields involving control button operation panels such as household appliances, handheld devices, industrial control, automotive electronics, military products, etc.
Rechan Electronic Technology Co., Ltd. is a manufacturer of capacitive and resistive touch sensing proximity switches. The company has advanced technical experience and a professional design team, as well as a high-quality and mature production workshop. It has performed well in the fields of membrane switches, control panels, touch sensor switches, medical electrodes, etc. Welcome to come to the factory to discuss customization. Email: kevin@rechan.com
