What are the common problems in membrane switch design?

Membrane switch is a set of key functions, indicators, instrument panel as one of the operating system. It is generally composed of four parts: panel, upper circuit, isolation layer and lower circuit. It has the characteristics of rigorous structure, beautiful appearance, good sealing, anti-moisture, long service life, etc. At the same time, it is also widely used in electronic communication, electronic measurement instruments, industrial control and other fields. So what are the common problems of the membrane switch in the design?

1. The key drum kit needs to open the mold to the appropriate position, otherwise it will affect the beauty of the key. When the adhesive is not sticky, in addition to the choice of raw materials, it is necessary to confirm the shape of the prototype.

2. The membrane switch drum key shrapnel needs to be placed properly and can not be offset, otherwise it will affect the operation of the key or even failure.

3. Color problems: ink modulation ratio is the main cause of serious color deviation. In the film switch above the color requirements are also more stringent, this from the perspective of enterprise control costs, It is a high cost to achieve a small color range, and the unit price of the product will increase accordingly when the cost of the products rises.

The above is the membrane switch in the design of some common problems, we must choose the quality of the product, after-sales and reputation are better manufacturers to buy. In the use of membrane switch, it has many advantages such as good flexibility, light weight, stable transmission performance, impact resistance, low price, green environmental protection, etc. And the price is only half of the ordinary rigid circuit board, which can reduce the cost of the product when it is used in the key parts.