Precautions when wiring the film panel The thin-film panel circuit is limited by parameters such as current, resistance, withstand voltage, insulation, and life. In order to ensure the function of the circuit, we must first ensure the quality of the silk-screen silver paste circuit. Since the selected thick wire mesh has serrated edges, it should be fully considered and paid attention to in the production of the membrane switch version, and it should be corrected and avoided in the production. According to practical experience, the following points should be paid attention to in the manufacture of thin-film panel circuits:

Introduction of FPC membrane key switch Membrane keys are the basic structure of \"key + membrane\", so the feel and characteristics of the keys depend on the design of the membrane keys. Considering the reliability of the separation and rebound of the switch contacts, the thickness of the film is generally selected at 0.-0.2mm as the best, too thin, the rebound is weak, and the contact separation is not sensitive. If the thickness is too thick, the response will be slow to increase the operation force. If the key body is larger, for example, when the diagonal length of a square key or the diameter of a circular key is larger than that of a circular key, use a film with a thickness of 0.15 or 0.2 mm.

The secret of membrane switch principle The emergence of an industrial technology is often the result of the hard work of many people or even several generations. The purpose of continuous research and deliberation is to bring people a more comfortable and convenient life. The birth of new industrial products is to be more subtly. They are integrated into people\'s daily life. You may not fully know these products, but you will definitely encounter them in life. If you know their principles, it is very helpful to solve some small problems. Here is a new type of industrial product , Xiaobian takes you to understand its principle. ??

How to repair the membrane panel membrane button panel if it is broken 1. Technically speaking, it is very simple to replace the membrane of the keyboard. You only need to use a screwdriver to remove all the screws on the back of the keyboard, and then open the back cover, you can see that the membrane is stuck on the back cover by the pile head. Remove the screw connecting the circuit board, and the membrane can be removed for replacement.

Why do so many FPC membrane key switches make membrane key switches, is it a wide range of applications or high profits? The scope of application is relatively wide, and there are many such manufacturers. I know Kangde Electronics in Dongguan, and we have cooperated with them, which is not bad.

FPC thin-film key switch: the Microwave thin-film switch of the United States does not work how to fix, leakage is due to the microwave computer board by long-term moisture or water erosion caused, and from the appearance of the Circuit Board is sometimes difficult to determine whether leakage, so if necessary, you can directly use anhydrous alcohol wipe or clean film switch, FPC and computer board, mostly effective. This failure may also be caused by the FPC printed line at the same time several broken lines, but this is basically due to improper maintenance, it is relatively rare. Inspection as long as the naked eye or multimeter measurement, can quickly check the fault, re-welded broken line can, remove the fault. (2) failure of individual key switches on the keyboard. The main cause of the failure is the break line of FPC line or the bad contact of film switch. Can find the corresponding failure of the switch membrane switches, and lines, reference to the above method can be treated after troubleshooting.FPC thin film key switch: Thin Film Key introduction, thin film key is the “Key + film”basic structure, so, the key feel, characteristics and so on depend on the design of thin film key.

Membrane switch: What is a membrane switch? Membrane switch is a combination of switch keys, panel function text, Mark, trademark, transparent window and display window, and is a multi-layer overall seal, structure, and with friction-resistant, waterproof, dustproof, against harmful gases, long service life and stable performance and so on. Thin film switches have been widely used in intelligent electronic measuring instruments, medical instruments, computer control, CNC machine tools, electronic scales, post and telecommunications, copiers, refrigerators, microwave ovens, electric fans, washing machines, video Game Console and other industrial and household electrical products. Membrane switch: What are the uses of membrane switchMembrane switch: What are the characteristics of the metal shrapnel type membrane switch?

In the choice of thin film panel materials, the material physical chemistry performance index is good, its ink is also more extensive, is the thin film switch panel commonly used materials. Prestressed concrete materials differ from sand surfaces and smooth surfaces. The reason for choosing the sand surface material is that the use of the thin film switch is mostly electronic, and the panel as the control system does not want to be disturbed by the light. The sand surface only has diffuse reflection and will not produce bright reflection, at the same time, due to the disorder of the sand surface, it has the function of hiding scratches, on the contrary, the smooth surface material does not have the above characteristics. But as a smooth material, once printed on the back,

The performance of the FPC film key switch is directly related to the normal use of the film key switch. When the film key switch is made into a “Switch”, the connecting wires of the function keys are connected together in advance. Unlike discrete switch elements, each switch pin needs to be connected with a welding wire. Therefore, the thin film switch circuit can avoid welding error, save welding time, and facilitate assembly and connection. This is also the convenience and reliability of the membrane key switch. Since the connection of the membrane switch is prefabricated, the design of the Membrane Switch Circuit shall be submitted to the manufacturer as a process document. Thin-film key switch circuit design can be divided into two. One is the ordinary wire method

How to prevent the windows of the membrane switch from being scratched, the connection of the membrane switch to the display window, and the user’s requirements for the transparency of the windows are very strict and no defects are allowed, in particular, users sometimes use the quality of the glass to check the display window of the membrane switch. Remember someone said that the user is always right, how do we control the window membrane switch? First of all, we should have a high degree of quality awareness, strict control of all production links. The window and the key of the membrane switch are a whole, the key production process is complex, the flow is many, every production link of the membrane switch must consider to protect the window from scratch. Control raw materials, transparency and scratch test levels for purchased raw materials.