This is where Tektronix decided to use its existing expertise with ceramic strips during the pre-PCB era to create ceramic funnels for ceramic CRTs, as described in this 1967 video. The Tektronix ...

Manufacturer of Ceramic PCB, substrates, and packages in Alumina Oxide and Aluminum Nitride as well as thermal interface material (TIM) and thermal modeling/design services. Ceramic heat plates in ...