Single gun storage tube with target emission sustained by electric field

Claim 1

AN ELECTRONIC STORAGE DISPLAY DEVICE COMPRISING: AN EVACUATED CONTAINER; A TARGET MEMBER IN SAID CONTAINER HAVING AN ELECTRICALLY CONDUCTIVE SURFACE AND AN OPPOSITE SURFACE THERETO ON WHICH IS DISPOSED A LAYER OF ELECTRON EMISSIVE MATERIAL; A VIEWING TARGET DISPOSED IN SAID CONTAINER COEXTENSIVE WITH SAID TARGET MEMBER AND ADAPTED TO LUMINESCE IN RESPONSE TO THE IMPINGEMENT THEREON OF ELECTRONS EMITTED FROM SAID LAYER OF ELECTRON EMISSIVE MATERIAL, SAID VIEWING TARGET BEING DISPOSED ADJACENT THE SURFACE OF SAID TARGET MEMBER ON WHICH SAID LAYER OF ELECTRON EMISSIVE MATERIAL IS DISPOSED; MEANS FOR FORMING AN ELECTRON BEAM AND FOR SCANNING SAID CONDUCTIVE SURFACE OF SAID TARGET MEMBER TO TRIGGER THE EMISSION OF ELECTRONS ONLY FROM AREAS OF SAID LAYER OF ELECTRON EMISSIVE MATERIAL OPPOSITE AREAS OF SAID CONDUCTIVE SURFACE IMPINGED BY SAID SCANNING ELECTRON BEAM; AND MEANS FOR ESTABLISHING AN ELECTRIC FIELD ACROSS SAID LAYER OF ELECTRON EMISSIVE MATERIAL TO SUSTAIN SAID TRIGGERED ELECTRON EMISSION THEREFROM.