Manufacturing process of LED backlight membrane switch
Time of issue：
The process flow of the LED backlight membrane switch is divided into four parts: design, screen making, screen printing and assembly. Only by mastering the operation technology of each process can the perfect process quality be guaranteed.
In the design of the LED backlight membrane switch, the designer must be familiar with the plate making and printing process, as well as the post-press assembly technology, and know whether the designed membrane switch meets the plate making and printing process requirements. For the design of general membrane switches, it is required to be concise and clear, suitable for printing; for some high-end LED backlight membrane switches with special design requirements, special personnel must be organized during post-press assembly to meet the requirements of customers and designers as much as possible. Since the printing and materials used for the LED backlight membrane switch are completely different from the printing processes of general books and magazines, the design of screen printing should fully consider the characteristics of the materials and printing process of the membrane switch.
Screen printing plate making often encounters the process methods that require hollowing and inlaying, especially if the artwork needs bright colors or gold and silver, the printing plate must be made into a hollow inlaid version, otherwise it will easily cause the color to darken and the amount of gold and silver ink is insufficient. problem.
LED backlight membrane switch screen production, the direct plate making method is generally used, and the process flow of directly making the screen with photosensitive emulsion is: screen degreasing → screen drying → coating photosensitive glue → stencil drying → stencil replenishing glue → stencil drying → Exposure → development → stencil drying → inspection and revision. The photosensitive adhesive layer of the screen must be uniform, the emulsion completely covers the screen, and the adhesive layer on the printing surface should be thicker.
The above is the little knowledge of LED backlight membrane switch, I hope it will be helpful to you.