Method of manufacturing a color filter cathode ray tube (CRT)
OwnerFarzad Parsapourinventor
Life of this patent
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Abstract
A method of manufacturing a luminescent screen assembly for a cathode ray tube (CRT) is disclosed. The luminescent screen assembly is formed on an interior surface of a faceplate panel of the CRT. The luminescent screen assembly includes a patterned light absorbing matrix that defines a first set of fields, a second set of fields, and a third set of fields. A blocking layer is formed over the second set of fields and the third set of fields. A pigment layer is then applied to the first set of fields. The blocking layer is removed from the second set of fields and the third set of fields to form a color filter in the first set of fields. Another pigment may be applied to the second set of fields to form a color filter therein.
Claims13
A method of manufacturing a luminescent screen assembly for a color cathode-ray tube (CRT), comprising:
- providing a faceplate panel having a patterned light absorbing matrix thereon defining a first set of fields, a second set of fields and a third set of fields;
- forming a blocking layer over the second set of fields and the third set of fields;
- applying a first pigment layer to the first set of fields;
- and
- removing the blocking layer in the second set of fields and the third set of fields.
A method of manufacturing a luminescent screen assembly for a color cathode-ray tube (CRT), comprising:
- providing a faceplate panel having a patterned light absorbing matrix thereon defining a first set of fields, a second set of fields and a third set of fields, wherein the first set of fields has a red pigment layer therein;
- forming a blue pigment layer on the patterned light absorbing matrix over the second set of fields, the third set of fields and the red pigment layer in the first set of fields;
- forming a blue phosphor layer on the blue pigment layer;
- and
- removing the blue pigment layer in the third set of fields and over the red pigment layer in the first set of fields.
A method of manufacturing a luminescent screen assembly for a color cathode-ray tube (CRT), comprising:
- providing a faceplate panel having a patterned light absorbing matrix thereon defining a first set of fields, a second set of fields and a third set of fields;
- forming a blocking layer over the second set of fields and the third set of fields;
- applying a blue pigment layer on the patterned light absorbing matrix over the first set of fields;
- and
- removing the blocking layer in the second set of fields and the third set of fields.
Dependencies are inferred from the claim text.