Capacitive touch EL screen manufacturing membrane switch line four problems should be paid attention to
In order to ensure the touch screen printing quality of capacitor EL membrane switch circuit, screen manufacturing is very important. And switch the line current, resistance, pressure, good insulation, such as parameters, it is also a commodity to many functions of silk screen printing, high-tech category penetration performance in detail. To ensure that the function of the circuit, should first ensure that the quality of network version of the silver paste printed circuit. Because of coarse mesh screen has the appearance such as margin serrate, so in touch capacitive EL membrane switch is abundant consider when plate making and take note, in the process to correct and prevent, shenzhen private detective on the basis of practical experience, switch circuit plate should be paid attention to the following:
The first point, choose the larger network box, network version of tension. Net frame, relative deformation is small, convenient operation. Net frame stretch tight closely, is advantageous to the data and the screen printing can be agile separation, so more advantageous for high viscosity pulp silver.
The second point, crafts glue, plastic flat surface evenly. Usually with 4 times advisable, but there are special circumstances, it depends on the photosensitive adhesive glue thin consistency and resolution. First pass on glue, want to repeat in the web version of the uniform motion, on both sides of the photosensitive glue evenly fill mesh. Then baking in the oven (note: every scraping gum, it is necessary to complete drying), the second, three times in the screen printing on surface after drying, the scrape a fourth times glue, in scraping ink surface drying at a time.
The third point, closely linked to the print screen and films, time shoulds not be too long, otherwise the development difficult, also shoulds not be too short, otherwise will form is not resistant to print, dilatation of the line. Then put in the drying system of good screen partly JK scour, low water pool just version of photosensitive glue evenly, enhancement of energetic after drying.
Fourth, drying the screen to see the presence of pinhole, bubble, and repair. Again after drying, for a second exposure, the first version of photosensitive glue links completely, strong, to progress the network version of the resistance to India.