Cathode ray tube screen structure utilizing adjuvant excitation

Claim 1

A COLOR CATHODE RAY TUBE COMPRISING: AN ENCLOSING ENVELOPE HAVING A GLASS RECEIVING PANEL; A MULTIPLEX SCREEN STRUCTURE DISPOSED ON THE INTERIOR SURFACE OF SAID RECEIVING PANEL AND INCLUDING: A FIRST APERTURED WEBBING OF A SUBSTANTIALLY OPAQUE ELECTRICAL CONDUCTIVE MATERIAL FORMED CONTIGUOUS TO THE INNER SURFACE OF SAID PANEL; A SECOND APERTURED WEBBING FORMED OF AN ELECTRONRESPONSIVE ULTRAVIOLET EMISSIVE PHOSPHOR MATERIAL SUPERPOSED IN SAID FIRST APERTURED WEBBING BEING IN ALIGNMENT TO PROVIDE A MULTITUDE OF DEFINED WINDOWS THERETHROUGH; SAID ULTRAVIOLET EMISSIVE PHOSPHOR MATERIAL BEING SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF EUROPIUMACTIVATED STRONTIUM FLUOROBORATE AND LEAD-ACTIVATED BARIUM MESOSILICATE; A PATTERENED ARRAY OF AT LEAST TWO REPETITIVE PHOSPHOR ELEMENTS DISPOSED IN A CONTIGUOUS MANNER OVER THE WINDOW AREAS OF SAID SECOND APERTURED WEBBING EACH OF SAID PHOSPHOR ELEMENT BEING OF A SIZE LARGER THAN THE RELATED WINDOW AREA, SAID PATTERN OF PHOSPHOR ELEMENTS BEING OF MATERIALS RESPONSIVE TO EXCITATION BY BOTH ELECTRON AND ULTRAVIOLET ENERGY AND DIFFERING FROM THE PHOSPHOR MATERIAL COMPRISING SAID SECOND WEBBING, THE ULTRAVIOLET EMISSIVE PHOSPHOR OF SAID SECOND WEBBING PROVIDING ADJUVANT EXCITATION ENERGY TO AT LEAST ONE OF SAID RELATED PHOSPHOR ELEMENTS DURING TUBE OPERATION TO INCREASE THE LUMINESCENT BRIGHTNESS THEREOF, AND A METALLIC REFLECTING FILM APPLIED AS A BACKING OVER SAID PATTERN OF SPACED-APART PHOSPHOR ELEMENTS; AN APERTURED PATTERN MEMBER ORIENTED IN SPACED RELATIONSHIP TO SAID MULTIPLEX SCREEN STRUCTURE; AND AT LEAST ONE SOURCE OF ELECTRON ENERGY POSITIONED WITHIN SAID ENVELOPE IN A MANNER TO BEAM ELECTRONS THROUGH SAID PATTERN MEMBER TO IMPINGE DISCRETE PORTIONS OF SAID MULTIPLEX SCREEN STRUCTURE THEREBEYOND.