Photographic methods of making electron-sensitive mosaic screens

Claim 3

IN A METHOD OF MAKING A PHOSPHOR SCREEN OF THE MOSAIC VARIETY UPON THE TARGET SURFACE OF A CATHODE-RAY TUBE, THE STEPS COMPRISING: COATING SAID TARGET SURFACE WITH A PHOTOSENSITIVE MATERIAL, THE SOLUBILITY OF WHICH IS DECREASED BY EXPOSURE TO ACTINIC ENERGY AND WITH INORGANIC PHOSPHOR PARTICLES WHICH EMIT LIGHT IN RESPONSE TO ELECTRON BOMBARDMENT, SAID PHOTOSENSITIVE MATERIAL COMPRISING AN ORGANIC GEL AND A PHOTOSENSITIZING MATERIAL, EXPOSING SAID PHOTOSENSITIVE MATERIAL TO ACTINIC ENERGY HAVING A PATTERN OF DISTRIBUTION CORRESPONDING TO AN ARRAY OF ELEMENTS OF SAID MOSAIC SO AS TO DECREASE ITS SOLUBILITY IN THE EXPOSED AREAS, THEREBY PHOTOGRAPHICALLY RECORDING SAID PATTERN UPON SAID TARGET SURFACE, REMOVING SAID PHOSPHOR PARTICLES AND PHOTOSENSITIVE MATERIAL FROM ONLY THE UNEXPOSED AREAS OF SAID TARGET SURFACE, BY SELECTIVELY DISSOLVING SAID PHOTOSENSITIVE MATERIAL IN SAID UNEXPOSED AREAS, AND BAKING SAID TARGET TO REMOVE SAID PHOTOSENSITIVE MATERIAL, BUT NOT SAID PHOSPHOR PARTICLES, FROM THE EXPOSED AREAS OF THE PHOTOGRAPHICALLY RECORDED PATTERN ON SAID TARGET SURFACE.

Claim 4

IN A METHOD OF MAKING A PHOSPHOR SCREEN OF THE MOSAIC VARIETY UPON THE TARGET SURFACE OF A CATHODE-RAY TUBE, THE STEPS COMPRISING: COATING SAID TARGET SURFACE WITH A PHOTOSENSITIVE MATERIAL, THE SOLUBILITY OF WHICH IS DECREASED BY EXPOSURE TO ACTINIC ENERGY AND WITH INORGANIC PHOSPHOR PARTICLES WHICH EMIT LIGHT IN RESPONSE TO ELECTRON BOMBARDMENT, SAID PHOTOSENSITIVE MATERIAL COMPRISING AN ORGANIC GEL AND A PHOTOSENSITIZING MATERIAL, EXPOSING SAID PHOTOSENSITIVE MATERIAL TO ACTINIC ENERGY HAVING A PATTERN OF DISTRIBUTION CORRESPONDING TO AN ARRAY OF ELEMENTS OF SAID MOSAIC SO AS TO DECREASE ITS SOLUBILITY IN THE EXPOSED AREAS, THEREBY PHOTOGRAPHICALLY RECORDING SAID PATTERN UPON SAID TARGET SURFACE, REMOVING SAID PHOSPHOR PARTICLES AND PHOTOSENSITIVE MATERIAL FROM ONLY THE UNEXPOSED AREAS OF SAID TARGET SURFACE, BY SELECTIVELY DISSOLVING SAID PHOTOSENSITIVE MATERIAL IN SAID UNEXPOSED AREAS, AND BAKING SAID TARGET TO REMOVE SAID PHOTOSENSITIVE MATERIAL, BUT NOT SAID PHOSPHOR PARTICLES, FROM THE EXPOSED AREAS OF THE PHOTOGRAPHICALLY RECORDED PATTERN ON SAID TARGET SURFACE.

Claim 5

IN A METHOD FOR MAKING A PHOSPHOR SCREEN OF THE TYPE HAVING FIRST AND SECOND ARRAYS OF DISCRETE AREAS OF PHOSPHOR PARTICLES OF DIFFERENT LIGHT-EMITTING PROPERTIES INTERLEAVED IN THE FORM OF A MOSAIC PATTERN, THE STEPS FOR PRODUCING SUCH A MOSAIC PATTERN INCLUDING: DEPOSITING ON A SCREEN SUPPORT A BINDER FOR SAID FIRST PHOSPHOR PARTICLES COMPRISING A PHOTOSENSITIZING MATERIAL AND AN ORGANIC GEL THE SOLUBILITY OF WHICH DECREASES WITH EXPOSURE TO ACTINIC ENERGY; ASSOCIATING WITH SAID BINDER FIRST INORGANIC PHOSPHOR PARTICLES EMISSIVE OF LIGHT OF A FIRST COLOR IN RESPONSE TO ELECTRON BOMBARDMENT; SELECTIVELY EXPOSING TO ACTINIC ENERGY AREAS OF THE DEPOSITED BINDER SO AS TO DECREASE ITS SOLUBILITY IN EXPOSED AREAS, THEREBY PRODUCING AREAS OF GREATER AND LESSER SOLUBILITY; DISSOLVING THE UNEXPOSED AREAS OF SAID BINDER, LEAVING UNDISSOLVED BINDER IN EXPOSED AREAS TO DEFINE ON SAID SUPPORT A FIRST ARRAY OF SUCH DISCRETE AREAS; DEPOSITING ON SAID SCREEN SUPPORT A BINDER FOR SAID SECOND PHOSPHOR PARTICLES COMPRISING A PHOTOSENSITIZING MATERIAL AND AN ORGANIC GEL THE SOLUBILITY OF WHICH DECREASES WITH EXPOSURE TO ACTINEIC ENERGY; ASSOCIATING WITH SAID SECOND-MENTIONED BINDER SECOND INORGANIC PHOSPHOR PARTICLES EMISSIVE OF LIGHT OF A SECOND COLOR IN RESPONSE TO ELECTRON BOMBARDMENT; SELECTIVELY EXPOSING TO ACTINIC ENERGY AREAS OF SAID SECOND-DEPOSITED BINDER OFFSET IN RELATION TO THE FIRSTEXPOSED AREAS SO AS TO DECREASE ITS SOLUBILITY IN EXPOSED AREAS, THEREBY PRODUCING AREAS OF GREATER AND LESSER SOLUBILITY; DISSOLVING THE UNEXPOSED AREAS OF SAID SECOND-DEPOSITED BINDER, LEAVING UNDISSOLVED BINDER IN EXPOSED AREAS TO DEFINE ON SAID SUPPORT A SECOND ARRAY OF SUCH DISCRETE AREAS OFFSET FROM SAID FRIST ARRAY; AND BAKING SAID SCREEN SUPPORT TO REMOVE THE REMAINING BINDER, LEAVING ON SAID SCREEN SUPPORT A MOSAIC PATTERN OF INORGANIC PHOSPHOR PARTICLES HAVING DIFFERENT LIGHT-EMITTING PROPERTIES UNDER ELECTRON BOMBARDMENT.

Claim 6

IN A METHOD FOR MAKING A PHOSPHOR SCREEN OF THE TYPE HAVING FIRST AND SECOND ARRAYS OF DISCRETE AREAS OF PHOSPHOR PARTICLES OF DIFFERENT LIGHT-EMITTING PROPERTIES INTERLEAVED IN THE FORM OF A MOSAIC PATTERN, THE STEPS FOR PRODUCING SUCH A MOSAIC PATTERN INCLUDING: DEPOSITING ON A SCREEN SUPPORT A BINDER FOR SAID FIRST PHOSPHOR PARTICLES COMPRISING A PHOTOSENSITIZING MATERIAL AND AN ORGANIC GEL THE SOLUBILITY OF WHICH DECREASES WITH EXPOSURE TO ACTINIC ENERGY; ASSOCIATING WITH SAID BINDER FIRST INORGANIC PHOSPHOR PARTICLES EMISSIVE OF LIGHT OF A FIRST COLOR IN RESPONSE TO ELECTRON BOMBARDMENT; SELECTIVELY EXPOSING TO ACTINIC ENERGY AREAS OF THE DEPOSITED BINDER SO AS TO DECREASE ITS SOLUBILITY IN EXPOSED AREAS, THEREBY PRODUCING AREAS OF GREATER AND LESSER SOLUBILITY; DISSOLVING THE UNEXPOSED AREAS OF SAID BINDER, LEAVING UNDISSOLVED BINDER IN EXPOSED AREAS TO DEFINE ON SAID SUPPORT A FIRST ARRAY OF SUCH DISCRETE AREAS; DEPOSITING ON SAID SCREEN SUPPORT A BINDER FOR SAID SECOND PHOSPHOR PARTICLES COMPRISING A PHOTOSENSITIZING MATERIAL AND AN ORGANIC GEL THE SOLUBILITY OF WHICH DECREASES WITH EXPOSURE TO ACTINEIC ENERGY; ASSOCIATING WITH SAID SECOND-MENTIONED BINDER SECOND INORGANIC PHOSPHOR PARTICLES EMISSIVE OF LIGHT OF A SECOND COLOR IN RESPONSE TO ELECTRON BOMBARDMENT; SELECTIVELY EXPOSING TO ACTINIC ENERGY AREAS OF SAID SECOND-DEPOSITED BINDER OFFSET IN RELATION TO THE FIRSTEXPOSED AREAS SO AS TO DECREASE ITS SOLUBILITY IN EXPOSED AREAS, THEREBY PRODUCING AREAS OF GREATER AND LESSER SOLUBILITY; DISSOLVING THE UNEXPOSED AREAS OF SAID SECOND-DEPOSITED BINDER, LEAVING UNDISSOLVED BINDER IN EXPOSED AREAS TO DEFINE ON SAID SUPPORT A SECOND ARRAY OF SUCH DISCRETE AREAS OFFSET FROM SAID FRIST ARRAY; AND BAKING SAID SCREEN SUPPORT TO REMOVE THE REMAINING BINDER, LEAVING ON SAID SCREEN SUPPORT A MOSAIC PATTERN OF INORGANIC PHOSPHOR PARTICLES HAVING DIFFERENT LIGHT-EMITTING PROPERTIES UNDER ELECTRON BOMBARDMENT.

Claim 7

IN THE MANUFACTURE OF A CATHODE-RAY TUBE OF THE TYPE COMPRISING A PHOSPHOR SCREEN SUPPORT HAVING, ON A TARGET FACE THEREOF, A MOSAIC PHOSPHOR SCREEN INCLUDING AT LEAST TWO ARRAYS OF PHOSPHOR DEPOSITS, EACH ARRAY COMPRISING A DIFFERENT PHOSPHOR, AID ARRAYS BEING OF SUBSTANTAILLY SIMILAR PATTERNS OFFSET FROM EACH OTHER, A MULTI-APERTURED ELECTRODE DISPOSED ADJACENT TO SAID SCREEN, AND MEANS FOR PROJECTING ELECTRONS ALONG DIFFERENT PATHS PASSING THROUGH THE APERTURES OF SAID ELECTRODE AND ONTO SAID PHOSPHOR DEPOSITS OF SAID SCREEN, THE METHOD OF ESTABLISHING SAID PATTERNS INCLUDING THE STEPS OF: (1) SENSITIZING THE TARGET FACE OF SAID PHOSPHOR SCREEN SUPPORT BY COATING SAID FACE WITH AN ORGANIC GEL AND A PHOTOSENSITIZING MATERIAL, SAID ORGANIC GEL HAVING A SOLUBILITY WHICH DECREASES WITH EXPOSURE THEREOF TO ACTINIC ENERGY; (2) ASSOCIATING INORGANIC PHOSPHOR PARTICLES WITH SAID ORGANIC GEL, SAID PHOSPHOR PARTICLES BEING EMISSIVE OF LIGHT OF A FIRST-COLOR IN RESPONSE TO ELECTRON BOMBARDMENT; (3) POSITIONING A MULTI-APERTURED MASK IN THE SAME POSITION RELATIVE TO SAID PHOSPHOR SCREEN SUPPORT THAT THE MULTI-APERTURED ELECTRODE OF THE FINISHED TUBE WILL HAVE; (4) PROJECTING ACTINIC ENERGY THROUGH APERTURES IN SAID THUS-POSITIONED MASK AND ONTO AREAS OF SAID TARGET FACE OF SAID PHOSPHOR SCREEN SUPPORT FROM A FIRST POINT, AFTER SAID TARGET FACE HAS BEEN SENSITIZED, TO RECORD DIRECTLY ON SAID PHOSPHOR SCREEN SUPPORT, THE IMAGE OF SAID APERTURES, THEREBY ESTABLISHING THEREON ONE OF SAID PATTERNS FOR ONE SUCH ARRAY OF PHOSPHOR DEPOSITS OF SAID MOSAIC SCREEN; (5) DISSOLVING THE UNEXPOSED AREAS OF SAID COATING OF ORGANIC GEL BY APPLYING A SOLVENT THERETO; (6) RESENSITIZING SAID TARGET FACE OF SAID SUPPORT BY COATING SAID FACE WITH ORGANIC GEL AND PHOTOSENSITIZING MATERIAL; (7) ASSOCIATING INORGANIC PHOSPHOR PARTICLES WITH SAID LAST-MENTIONED ORGANIC GEL, SAID PHOSPHOR PARTICLES BEING EMISSIVE OF LIGHT OF A SECOND COLOR IN RESPONSE TO ELECTRON BOMBARDMENT; (8) PROJECTING ACTINIC ENERGY THROUGH SAID MASK AND ONTO AREAS OF SAID TARGET FACE OF SAID PHOSPHOR SCREEN SUPPORT, AFTER SAID TARGET FACE HAS BEEN RESENSITIZED, FROM A SECOND POINT DISPLACED FROM SAID FIRST POINT, WITH SAID MASK IN THE SAME POSITION RELATIVE TO SAID PHOSPHOR SCREEN SUPPORT THAT THE MULTI-APERTURED ELECTRODE OF THE FINISHED TUBE WILL HAVE, TO RECORD DIRECTLY ON SAID PHOSPHOR SCREEN SUPPORT THE IMAGE OF SAID APERTURES, THEREBY ESTABLISHING THEREON ANOTHER OF SAID PATTERNS FOR ANOTHER SUCH ARRAY OF PHOSPHOR DEPOSITS OF SAID MOSAIC SCREEN, OFFSET FROM SAID FIRSTMENTIONED PATTERN; (9) DISSOLVING THE UNEXPOSED AREAS OF SAID LAST-APPLIED COATING OF ORGANIC GEL BY APPLYING A SOLVENT THERETO; (10) AND BAKING SAID TARGET FACE TO REMOVE THE ORGANIC GEL BUT NOT THE INORGANIC PHOSPHOR PARTICLES.

Claim 8

IN THE MANUFACTURE OF A CATHODE-RAY TUBE OF THE TYPE COMPRISING A PHOSPHOR SCREEN SUPPORT HAVING, ON A TARGET FACE THEREOF, A MOSAIC PHOSPHOR SCREEN INCLUDING AT LEAST TWO ARRAYS OF PHOSPHOR DEPOSITS, EACH ARRAY COMPRISING A DIFFERENT PHOSPHOR, AID ARRAYS BEING OF SUBSTANTAILLY SIMILAR PATTERNS OFFSET FROM EACH OTHER, A MULTI-APERTURED ELECTRODE DISPOSED ADJACENT TO SAID SCREEN, AND MEANS FOR PROJECTING ELECTRONS ALONG DIFFERENT PATHS PASSING THROUGH THE APERTURES OF SAID ELECTRODE AND ONTO SAID PHOSPHOR DEPOSITS OF SAID SCREEN, THE METHOD OF ESTABLISHING SAID PATTERNS INCLUDING THE STEPS OF: (1) SENSITIZING THE TARGET FACE OF SAID PHOSPHOR SCREEN SUPPORT BY COATING SAID FACE WITH AN ORGANIC GEL AND A PHOTOSENSITIZING MATERIAL, SAID ORGANIC GEL HAVING A SOLUBILITY WHICH DECREASES WITH EXPOSURE THEREOF TO ACTINIC ENERGY; (2) ASSOCIATING INORGANIC PHOSPHOR PARTICLES WITH SAID ORGANIC GEL, SAID PHOSPHOR PARTICLES BEING EMISSIVE OF LIGHT OF A FIRST-COLOR IN RESPONSE TO ELECTRON BOMBARDMENT; (3) POSITIONING A MULTI-APERTURED MASK IN THE SAME POSITION RELATIVE TO SAID PHOSPHOR SCREEN SUPPORT THAT THE MULTI-APERTURED ELECTRODE OF THE FINISHED TUBE WILL HAVE; (4) PROJECTING ACTINIC ENERGY THROUGH APERTURES IN SAID THUS-POSITIONED MASK AND ONTO AREAS OF SAID TARGET FACE OF SAID PHOSPHOR SCREEN SUPPORT FROM A FIRST POINT, AFTER SAID TARGET FACE HAS BEEN SENSITIZED, TO RECORD DIRECTLY ON SAID PHOSPHOR SCREEN SUPPORT, THE IMAGE OF SAID APERTURES, THEREBY ESTABLISHING THEREON ONE OF SAID PATTERNS FOR ONE SUCH ARRAY OF PHOSPHOR DEPOSITS OF SAID MOSAIC SCREEN; (5) DISSOLVING THE UNEXPOSED AREAS OF SAID COATING OF ORGANIC GEL BY APPLYING A SOLVENT THERETO; (6) RESENSITIZING SAID TARGET FACE OF SAID SUPPORT BY COATING SAID FACE WITH ORGANIC GEL AND PHOTOSENSITIZING MATERIAL; (7) ASSOCIATING INORGANIC PHOSPHOR PARTICLES WITH SAID LAST-MENTIONED ORGANIC GEL, SAID PHOSPHOR PARTICLES BEING EMISSIVE OF LIGHT OF A SECOND COLOR IN RESPONSE TO ELECTRON BOMBARDMENT; (8) PROJECTING ACTINIC ENERGY THROUGH SAID MASK AND ONTO AREAS OF SAID TARGET FACE OF SAID PHOSPHOR SCREEN SUPPORT, AFTER SAID TARGET FACE HAS BEEN RESENSITIZED, FROM A SECOND POINT DISPLACED FROM SAID FIRST POINT, WITH SAID MASK IN THE SAME POSITION RELATIVE TO SAID PHOSPHOR SCREEN SUPPORT THAT THE MULTI-APERTURED ELECTRODE OF THE FINISHED TUBE WILL HAVE, TO RECORD DIRECTLY ON SAID PHOSPHOR SCREEN SUPPORT THE IMAGE OF SAID APERTURES, THEREBY ESTABLISHING THEREON ANOTHER OF SAID PATTERNS FOR ANOTHER SUCH ARRAY OF PHOSPHOR DEPOSITS OF SAID MOSAIC SCREEN, OFFSET FROM SAID FIRSTMENTIONED PATTERN; (9) DISSOLVING THE UNEXPOSED AREAS OF SAID LAST-APPLIED COATING OF ORGANIC GEL BY APPLYING A SOLVENT THERETO; (10) AND BAKING SAID TARGET FACE TO REMOVE THE ORGANIC GEL BUT NOT THE INORGANIC PHOSPHOR PARTICLES.