Methods of printing filter material to fabricate color filter

A method of fabricating a color filter, including:

• a) providing a substrate with a matrix attached thereto, the matrix forming an array of recessed cells, each recessed cell defined by a perimeter wall associated with the matrix and a bottom wall associated with the substrate;
• b) providing a liquid filter material ejection system with an inkjet print head, a first liquid filter material to be selectively ejected by the inkjet print head, a second liquid filter material to be selectively ejected by the inkjet print head, a third liquid filter material to be selectively ejected by the inkjet print head, and a table supporting the substrate;
• c) fixing a first cured filter material to a first portion of the recessed cells by selectively ejecting a plurality of drops of the first liquid filter material in each of the first portion recessed cells from the inkjet print head using a drop size printing process, the first liquid filter material at least partially curing after ejection to form the first cured filter material, wherein the plurality of drops of the first liquid filter material associated with the corresponding first portion recessed cell include at least one smaller drop and at least one larger drop selectively ejected in one or more passes of the inkjet print head across the corresponding first portion recessed cell;
• d) fixing a second cured filter material to a second portion of the recessed cells by selectively ejecting a plurality of drops of the second liquid filter material in each of the second portion recessed cells from the inkjet print head using a drop size printing process, the second liquid filter material at least partially curing after ejection to form the second cured filter material, wherein the plurality of drops of the second liquid filter material associated with the corresponding second portion recessed cell include at least one smaller drop and at least one larger drop selectively ejected in one or more passes of the inkjet print head across the corresponding second portion recessed cell;
• and
• e) fixing a third cured filter material to a third portion of the recessed cells by selectively ejecting a plurality of drops of the third liquid filter material in each of the third portion recessed cells from the inkjet print head using a drop size printing process, the third liquid filter material at least partially curing after ejection to form the third cured filter material, wherein the plurality of drops of the third liquid filter material associated with the corresponding third portion recessed cell include at least one smaller drop and at least one larger drop selectively ejected in one or more passes of the inkjet print head across the corresponding third portion recessed cell.