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2023-06-06
Xinjie Jia teaches you how to choose a thin film switch tester
What precautions should be taken when choosing a thin film switch tester? Xiaomian Xin Jiejia teaches you how to choose a thin film switch tester. Here are some tips: (1) Can the instrument test for leakage. (2) Can the instrument test the resistance value (usually the upper limit of the resistance value is specified for thin film switches). (3) Testing the range of leakage (this is also very important as it is too small to meet the customer's requirements). (4) Can you indicate the location and specific parameters of the defect (which is very convenient for analyzing problems and finding the cause). (5) Does the instrument have a statistical function (this is also a practical function, there is no need to test another one and count the number of times with a counting machine).
2023-06-06
How to detect ink indicators in the production process of thin film switches
In the production process of thin film switches, the main raw materials are thin film, ink, and solvents. And there are several basic indicators of ink that are listed within the scope of thin film switch detection: viscosity, fineness, hue, and adhesion fastness. When conducting viscosity testing, it is best to dilute the matching mixed solvent to a specific viscosity (such as 18 seconds/25 ℃) and calculate the amount of solvent added. This can eliminate the possibility of "false viscosity" caused by some ink (the ink may appear thick, but the solvent cannot be added). The detection of adhesion fastness can use the national standard (GB/T13217.7-91), but for some surface printing inks, it may not be enough. It is best to simulate the specific requirements of product packaging and post-processing conditions for testing.
2023-06-06
What are the classifications of membrane switches?
(1) Military membrane switch The biggest difference between the two is the usage environment, which is quite harsh for military thin film switches. In terms of environmental temperature alone, its working conditions not only need to meet the requirements of -54~70 degrees, but also need to withstand temperature shocks of -55~100 degrees and 3 cycles. Moreover, in foreign military standards, the operating temperature for high-temperature testing is set at 125 degrees Celsius, and the high-temperature storage temperature is 150 degrees Celsius. It is obvious that commercial thin film switches are not suitable for working in such harsh military environments.
2023-06-06
What are the steps for inspecting thin film switches?
What are the steps for inspecting thin film switches? 1. Material inspection: The panel, substrate, silver paste, carbon ink, spacer, adhesive, adhesive, reinforcing plate, and insulation printing should comply with the requirements of the drawing.
2023-06-06
Standard formulation of thin film switches in the electrical industry
Formulation of standards for thin film switches in the electrical industry: Thin film switch is a multi-layer structure (planar) (non locking) key switch composed of insulating material layers with certain elasticity. Due to its beautiful appearance, long lifespan, and simple structure, it is widely used in various industries, ranging from household appliances to high-tech products. The membrane switch is mainly composed of facial mask, facial mask adhesive, upper circuit, isolation layer, lower circuit and adhesive. The structure is as shown in "membrane switch structure". The facial mask layer, upper line layer and lower line layer are transparent films, and the main materials used are PC, PET and PVC. The facial mask backing, isolation layer and backing layer are made of Double-sided tape (commonly known as sandwich). Principle of Thin Film Switch
2023-06-06
Common problems in the design of thin film switches
The buttons on membrane switches are commonly used in the initial stage of membrane keyboards to indicate the position, shape, and size of the key body with different colors. Stereoscopic thin film keyboard: Usually, the buttons on a thin film keyboard only use color to express the position, shape, and size of the key body. In this way, the accuracy of the operation can only be recognized based on the operator's vision. Due to the lack of appropriate feedback information indicating whether the finger is within the effective range of the switch to activate the switch, it affects the confidence in monitoring the entire machine and the speed of operation.
Shenzhen Xin Jie Jia Electronic Membrane Switch co.,ltd
Tel：0086-0755-27884065
Mobile phone：86-13509657170
E-mail：jyj.2008vip@163.com
Add：5/F, 23rd Third Industrial Zone Fenghuang Xingwei Baoan Shenzhen China 518103
