PCB Tech - About Color tips for fpc circuit board production

Green has little irritation to the eyes, it is not easy to be tired when staring at the fpc circuit board for a long time, and it is less harmful to the eyes

In fact, fans who have been learning circuits may have such questions, that is why most of the circuit boards we use are green? In fact, the production of fpc circuit boards is not necessarily green. It depends on the designer. What color is it? What color is it. Under normal circumstances, we choose green. Because green is less irritating to the eyes, it is not easy for the production and maintenance personnel to stare at the production of fpc circuit boards for a long time. All colors are painted on the surface after it is manufactured.

fpc circuit board production color common sense!

1. The reason for using green in fpc circuit board production?

(1) Introduction of domestic professional fpc circuit board production company: Green ink is widely used so far, has a long history, and is cheaper in the current market, so green ink is used by a large number of manufacturers as their own products The main color.

(2) Under normal circumstances, in the process of fpc circuit board production, there are several processes that need to go through the yellow light room, because the effect of green in the yellow light room is better than other colors, but this is not the more important reason. When soldering components in SMT, the production of fpc circuit boards has to go through the process of solder paste and post film and later AOI calibration light. These processes all need to be optically positioned and calibrated. The green background color can identify the instrument. The effect is better.

2. What are the common colors in the production of fpc circuit boards?

(1) The common production colors of fpc circuit boards are red, yellow, green, blue and black. However, due to problems such as the production process, the quality inspection process of many lines still needs to rely on the naked eye observation and recognition of the workers (currently, most of the flying probe testing technology is used). In the case of bright light, the eyes keep staring at the board. This process is very tiring. Relatively speaking, the green color does not hurt the eyes. Therefore, most manufacturers in the market currently use green PCBs.

(2) Introduction of domestic well-known fpc circuit board manufacturers: The principle of blue and black is that they are doped with cobalt and carbon lamp elements, respectively, and have certain electrical conductivity. Short circuit problems are likely to occur when power is on, and green The production of fpc circuit boards is relatively environmentally friendly, and generally does not release toxic gases when used in a high-temperature environment.

Later, the editor would like to add that since about the middle and late last century, the industry has begun to pay attention to the color problem of PCB boards, mainly because many high-end board types of major first-tier manufacturers have adopted green PCB board color design. So people accepted green as the default color of the PCB. The above is the reason why fpc circuit board production chooses green.