What is a membrane keyboard?

Nowadays, people like to use mechanical keyboards. As a thin-film keyboard of another branch of the keyboard , they are gradually forgotten by everyone. So what is a membrane keyboard? Which is better for the membrane keyboard? Let's take a look at the decoration home decoration network Xiaobian.

What is a membrane keyboard?

The membrane keyboard is an example of the category of membrane switches. The membrane switches with many buttons and arranged in order are called the membrane keyboard. The membrane keyboard is an operating system that is popular in recent years and is a combination of decoration and functionality. It consists of four parts: panel, upper circuit, isolation layer and lower circuit. The membrane keyboard is beautiful and novel in appearance, small in size, light in weight and strong in sealing. It has the characteristics of moisture proof, dustproof, oil proof, acid and alkali resistance, shock resistance and long service life. Widely used in medical equipment, computer control, digital machine tools, electronic scales, post and telecommunications, copiers, refrigerators, microwave ovens, electric fans, washing machines, electronic game machines and other fields.

Which is better for the membrane keyboard?

1. Flexible membrane keyboard: The flexible membrane keyboard is a typical form of membrane keyboard. This type of membrane keyboard is called flexible because the mask layer, the isolating layer and the circuit layer of the membrane keyboard are all composed of software films of various properties. The circuit layers of the flexible membrane keyboard are all made of polyester film (PET) with good electrical properties as the carrier of the switch circuit pattern. Due to the properties of the polyester film, the membrane keyboard has good insulation, heat resistance, folding resistance and high resilience. The pattern of the switching circuit, including the switch connection and its lead-out line, is printed with a low-resistance, conductive coating that cures under low temperature conditions. Therefore, the composition of the entire membrane keyboard has a certain flexibility, and is not only suitable for use on a planar body, but also can be matched with a curved body. The flexible membrane keyboard lead wire is integrated with the switch body itself, and when the group switch is made on the line, it is collected at a certain position of the film, and extends outward according to the design specified position and the standard line distance, as a soft The arbitrarily bent, sealed lead wire is connected to the rear circuit of the whole machine.

2 , rigid membrane keyboard: rigid membrane keyboard means that the switch graphics and lines are made on the common printed circuit copper clad board. The rigid membrane keyboard is characterized by easy material selection, stable process, low resistance, and can directly solder some components in the circuit on the back side. In the case of a small area, the hard lining layer can be omitted. Hard film keyboards generally use metal guides as the conduction labyrinth contacts, so a better hand feel. The unfavorable aspect is that it is convenient to install the soft film keyboard in the whole machine, and it is often necessary to solder the plug-in and lead the lead through the flat cable. Information feedback of the rigid membrane keyboard In addition to the buzzer signal and LED indication, metal feel shrapnel is generally available.

3. Flat membrane keyboard: The buttons on the membrane keyboard indicate the position, shape and size of the key body in different colors, which is more common in the initial stage of the membrane keyboard.

4 , three-dimensional membrane keyboard: a membrane key that makes the key body slightly convex, slightly higher than the panel, forming a three-dimensional shape, called a stereo key switch. The stereo key not only accurately gives the range of the key body, but also improves the recognition speed, makes the touch of the operator more sensitive, and also enhances the decorative effect of the appearance of the product . The production of the stereo key must be done in the design stage of the panel. Arrangement, process holes are provided to accurately position the mold when it is pressed, and the height of the three-dimensional protrusion is generally not more than twice the thickness of the substrate. For the appearance of an aesthetic product, the protrusion of the raised film keyboard can be varied.