Matters Needing Attention and Failure Analysis of Membrane Switch Pasting

The application of membrane switches is very extensive, so the frequency of use of membrane switches is relatively high. After membrane switch manufacturers have finished sending them to other device manufacturers, the paste application process is involved.

Ⅰ. What are the precautions when using membrane switches?

1. Clean the surface of the membrane switch that needs to be pasted

A membrane switch is a combination of multiple button functions. When you need to install, you should clean the surface of the membrane switch that needs to be pasted, because the membrane switch needs to tear off the centrifugal paper after the membrane is cleaned, and the bonding surface is clean to ensure that the switch can be installed correctly.

2. Do not paste the membrane switch repeatedly

Usually, as long as the membrane switch is pasted, it can be used normally. However, when installing, do not stick it repeatedly, you must finish the work at one time and tear it off, and the tearing angle should not exceed 15 degrees, otherwise it will affect the later use of the membrane switch.

3. After the membrane switch is installed, place it flat on the workbench

When you need to try pressing after installation, the membrane switch must be placed flat on the workbench before pressing. If the desktop is not flat, it will affect the service life of the membrane switch.

Ⅱ. The reasons for the failure of the membrane keypad switch

1. Membrane keypad switch failure: poor contact

There are many places that can cause the product to have poor contact problems. The connection between the product and the device is loose, that is, the terminal is loose, and the product and the device are in poor contact. If the shrapnel in the product button is displaced or loose, film will also occur. The problem of poor contact of the switch; the loose LED light in the product will cause the problem of poor contact, which is the poor contact between the LED light and the line, these are all repairable faults.

2. Membrane keypad switch failure: line problem

For circuit problems, the common problems are disconnection, short circuit, cracking and silver wire falling off, etc. The reasons for this problem are that the installation angle is greater than 25°, the membrane switch circuit is folded in half, and the quality of silver paste is not good, etc. This is an irreparable fault.

The above is the introduction of the reasons for the failure of the membrane keypad switch. If you need to know the details or how to repair the failure, please log in to our website of Dongguan Niceone Electronics Technology Co., Limited and come to us for custom membrane switches!