Color cathode ray tube, method of manufacture thereof and method of creating fluorescent screen

A method of manufacturing a color cathode ray tube, comprising:

• forming on a color selecting mechanism a resist pattern that is independent of beam transmissive apertures of said color selecting mechanism;
• creating a fluorescent screen using said resist pattern as a mask;
• and
• forming said color selecting mechanism by removing said resist pattern after creating said fluorescent screen.

A method of manufacturing a color cathode ray tube, comprising:

• forming a mask member that is obtained by forming a first resist pattern having one of a first aperture width and a first aperture diameter on one side of a base material, forming a second resist pattern having one of a second aperture width and a second aperture diameter that is smaller than one of said first aperture width and said first aperture diameter on the other side of said base material, and selectively removing said base material with said first resist pattern, substantially, as a mask;
• creating a fluorescent screen using said second resist pattern of said mask member as a mask;
• and
• forming a color selecting mechanism by removing said first resist pattern and said second resist pattern of said mask member after creating said fluorescent screen.

A method of manufacturing a color cathode ray tube, comprising;

• forming a mask member by,
• forming a first photoresist material on one side of a base material and a second photoresist material on the other side;
• exposing said first photoresist material and said second photoresist material in differing patterns;
• forming a first resist pattern having one of a first aperture width and a first aperture diameter by processing said first photoresist material;
• selectively removing said base material with said first resist pattern as a mask until said second photoresist material is reached;
• and
• forming a second resist pattern having one of a second aperture width and a second aperture diameter that is smaller than one of said first aperture width and said first aperture diameter by processing said second photoresist material, and
• forming a color selecting mechanism by,
• creating a fluorescent screen using said second resist pattern of said mask member as a mask;
• and
• removing said first resist pattern and said second resist pattern of said mask member after creating said fluorescent screen.

A method of manufacturing a color cathode ray tube, comprising:

• forming a mask member by,
• forming a first photoresist material on one side of a base material and a second photoresist material on the other side;
• exposing said first photoresist material and said second photoresist material in differing patterns;
• forming a first resist pattern having one of a first aperture width and a first aperture diameter by processing said first photoresist material;
• forming a second resist pattern having one of a second aperture width and a second aperture diameter that is smaller than one of said first aperture width and said first aperture diameter by processing said second photoresist material;
• and
• selectively removing said base material in a pattern corresponding to said first resist pattern with said first resist pattern and said second resist pattern as masks, and
• forming a color selecting mechanism, by
• creating a fluorescent screen using said second resist pattern of said mask member as a mask;
• and
• removing said first resist pattern and said second resist pattern of said mask member after creating said fluorescent screen.

A method of creating a fluorescent screen, comprising:

• forming a mask member by,
• forming a first photoresist material on one side of a base material and a second photoresist material on the other side;
• exposing said first photoresist material and said second photoresist material in differing patterns;
• forming a first resist pattern having one of a first aperture width and a first aperture diameter by processing said first photoresist material;
• selectively removing said base material with said first resist pattern as a mask until said second photoresist material is reached;
• and
• forming a second resist pattern having one of a second aperture width and a second aperture diameter that is smaller than one of said first aperture width and said first aperture diameter by processing said second photoresist material, and
• performing an exposure process for creating said fluorescent screen using said second resist pattern of said mask member as a mask.

A method of creating a fluorescent screen, comprising:

• forming a mask member by,
• forming a first photoresist material on one side of a base material and a second photoresist material on the other side;
• exposing said first photoresist material and said second photoresist material in differing patterns;
• forming a first resist pattern having one of a first aperture width and a first aperture diameter by processing said first photoresist material;
• forming a second resist pattern having one of a second aperture width and a second aperture diameter that is smaller than one of said first aperture width and said first aperture diameter by processing said second photoresist material;
• and
• selectively removing said base material in a pattern corresponding to said first resist pattern with said first resist pattern and said second resist pattern as masks, and
• performing an exposure process for creating said fluorescent screen using said second resist pattern of said mask member as a mask.