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In this letter, we report on the realization of a carbon nanotube-based field emission triode with a new flip-chip design of the cathode. Our fabrication method is highly versatile and allows the use of various emitting materials, overcoming at the same time the severe limitations of material choices for the nanotriode fabrication. The obtained device shows a good modulation behavior and low losses. This technology opens a new way for the realization of highly efficient and scaled vacuum field emission devices.