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54.1: Invited Paper: A Novel Cathode for CRTs based on Hopping Electron Transport

The Hopping Electron Cathode (HEC) is a novel low‐drive electron source, which can be used in CRTs to reduce the cost of the set electronics and to improve the image quality. It is based on a self‐regulating secondary emission process enabling transport of electrons over insulating surfaces. The HEC utilizes this mechanism to compress electrons coming from a large conventional cathode into a small funnel structure of insulating material. The exit of the funnel serves as a high‐brightness electron source for a CRT and can be used to reduce the spot size.