AT&S also offers its customers from the semiconductor industry the opportunity to produce their own reference boards. These display systems might be produced when a new generation of chips is developed, for instance. AT&S then produces reference boards that show how the new chip can be integrated onto a printed circuit board. The chip manufacturer can pass these reference systems on to the system and mainboard manufacturers, so that they can offer products for the new chip early on. These reference boards are highly complex, have 12 to 36 layers, and are designed in HDI technology with a very high circuit density.