Flex PCB ( FPC )

According to different manufacturing method, current there're three basic types for ceramic board:
A) Thick Film Ceramic Board
Thick Film Ceramic PCB: Using this technology, the thickness of conductor layer exceeds 10 micron, more thick than spurting technology. The conductor is silver or gold palladium, and was printed on ceramic substrate. More for Thick Film Ceramic PCB
B) DCB Ceramic Board
DCB (Direct Copper Bonded) technology denotes a special process in which the copper foil and the core (Al2O3 or ALN), on one or both sides, are directly bonded under appropriate high temperature and pressure.
Click here to see more details about ceramic substrate.