A device useful as a display element has an electron emitter and an anode disposed to receive electrons emitted from the emitter. The anode has surface portions differing in resistivity, providing an electron sink portion at the surface portion of lowest resistivity. A preferred embodiment has a lateral...http://www.google.fr/patents/US5872421?utm_source=gb-gplus-shareBrevet US5872421 - Surface electron display device with electron sink
Surface electron display device with electron sink
