How to prevent others from copying PCB design?

In PCB design, after completing PCB design through many hurdles, the most important issue is copyright and plagiarism is common. So, how to prevent others from copying PCB design?

1. Apply for patent.

2.Grind the chip. Grind the pattern off the chip with fine sandpaper. It is more useful for partial gate chips.

3.Sealing glue. Completely cover the PCB and its components. There are also five or six jump wires deliberately twisted together. It should be noted that the adhesive should not be corrosive and the enclosed area should not generate too much heat.

4.Use special encryption chips. For example, ATMEL’s AT88sc153.

5.Use unbreakable chips, such as EPM7128 or above of EPLD, CPLD of Actel, etc.

6.Using MASK IC. This requires a large batch.

7.Using bare chips. The plagiarists can’t see the model and don’t know the wiring. But the function of the chip should not be too easy to guess.

8.Use more small components without words (or only some codes) to process signals, such as small chip capacitors and diodes of TO-XX.

9. PCB adopts buried hole and blind hole technology, so that vias are hidden in the board. (the price is a little high)

10.Use other special accessories, such as customized LCD screen, customized transformer, etc.

The above is how to prevent others from copying boards in PCB design. I hope it can help you.

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