Ink compositions, methods of preparing ink compositions and display panels including ink compositions

A method of preparing an ink composition, comprising:

• preparing core-shell coated pigment particles by core-shell coating using pigment particles, at least one hydrophilic organometallic compound, at least one hydrophobic organometallic compound, distilled water and a solvent;
• preparing ink particles coated with an ionized organometallic compound by using the core-shell coated pigment particles, the solvent and a halogen compound;
• and
• mixing the ink particles, a dispersing agent and a dielectric liquid.

A mixed color ink composition comprising:

• a first ink composition including first ink particles core-shell coated with at least one ionized hydrophilic organometallic compound and at least one hydrophobic organometallic compound, a dispersing agent and a dielectric liquid;
• a second ink composition including second ink particles core-shell coated with at least one ionized hydrophilic organometallic compound and at least one hydrophobic organometallic compound, the dispersing agent and the dielectric liquid;
• and
• a low dielectric liquid.

A method of manufacturing a display panel, comprising:

• preparing a first single color ink composition by dispersing uniformly ink particles core-shell coated with at least one ionized hydrophilic organometallic compound and at least one hydrophobic organometallic compound in a dielectric liquid;
• preparing a second single color ink composition having a different color from the first single color ink composition;
• preparing a mixed color ink composition by mixing the first and second single color ink compositions;
• and
• forming a pixel by injecting the mixed color ink composition into a cell structure.