Thin film switch with display window, users have very strict requirements for the transparency of the window, and cannot tolerate any flaws, especially when users use the quality of glasses and lenses to test the display window of the thin film switch. Do you remember someone saying that users are always right? How should we control the window of the membrane switch?

Firstly, it is necessary to have a high level of quality awareness and strictly control each production process. The window of the membrane switch is integrated with the button, and the production process of the button is complex and involves multiple processes. Each production process of the membrane switch must consider protecting the window from scratches.

Control of raw materials and conduct transparency and scratch resistance tests on the purchased raw materials. When selecting materials for thin film switches with display windows, it is important to choose anti scratch materials. The anti scratch level on the front is particularly important. When purchasing raw materials, it is necessary to have protective films on both sides of the material, so that there will be no damage to the material when cutting. If the material is not selected properly, it is difficult to control the scratches on the window.

Printing environment, printing is usually done in a dust-free workshop, and dust-free is only relative. For semi-automatic screen printing, the window is exposed and stored for a long time, especially for film switches with many colors. We can consider printing water-based protective paint on the window position in the second printing process, so that the subsequent printing process can protect the window and avoid dust sticking to it. After the final printing is completed, protective film can be applied. Automatic printing requires each printing process to be covered with a protective film,

At the same time, it is important to note that the glue roller should not stick dust particles to prevent window scratches.

The standardization of homework requires that every step of the production process must not touch the window area, and wiping the window is also prohibited. Since it comes into contact with the window area with a finger cover, it will leave imprints, and even a slight wipe may scratch the window.

The production of thin film switches involves many molds, and the window area of the mold must be bright and flat. During the production process, the mold should be repeatedly checked for debris to prevent damaging the window. Special attention should be paid to the window area of the screen printing to prevent sand holes and prevent oil leakage in the window area.

After printing, the panel must be double-sided coated with film and enter the assembly adhesive process. Usually, after the circuit assembly is completed, the next step is to apply the panel, remove the protective film on the back of the panel, and immediately apply the protective film on the window area.