Method for forming low-energy electron excited fluorescent screen

A method for forming a fluorescent screen comprising:

• dissolving in a non-aqueous solvent a charging material, the charging material being a metal salt comprising a cation which in conjunction with a phosphor forms through an electrochemical reaction an indium oxide,
• suspending in the non-aqueous solvent the phosphor which adopts a positive charge in the non-aqueous solvent
• depositing electrophoretically from the non-aqueous solvent the cation and the phosphor to form a low energy electron excited fluorescent phosphor precursor composition in-situ upon a fluorescent screen substrate as a cathode;
• and
• drying the low energy electron excited fluorescent phosphor precursor composition to form a low energy electron excited fluorescent phosphor composition upon the fluorescent screen substrate, wherein the low energy electron excited fluorescent phosphor composition has a lower threshold voltage than an analogous low energy electron excited fluorescent phosphor composition formed in absence of the charging material comprising the cation.

A method for forming a fluorescent screen comprising:

• dissolving in a non-aqueous solvent a charging material, the charging material being a metal salt comprising a cation which in conjunction with a phosphor forms through an electrochemical reaction a tin oxide;
• suspending in the non-aqueous solvent the phosphor which adopts a positive charge in the non-aqueous solvent;
• depositing electrophoretically from the non-aqueous solvent the cation and the phosphor to form a low energy electron excited fluorescent phosphor precursor composition in-situ upon a fluorescent screen substrate as a cathode;
• and
• drying the low energy electron excited fluorescent phosphor precursor composition to form a low energy electron excited fluorescent phosphor composition upon the fluorescent screen substrate wherein the low energy electron excited fluorescent phosphor composition has a lower threshold voltage than an analogous low energy electron excited fluorescent phosphor composition formed in absence of the charging material comprising the cation.