Inkjet method and apparatus for printing an alignment layer

An inkjet alignment layer printing method comprising:

• depositing drops of an alignment liquid on a substrate while moving a plurality of inkjet heads and the substrate relative to each other to form a first dropping line on the substrate;
• rotating a printing stage on which the substrate is mounted by 90 degrees;
• and
• depositing drops of the alignment liquid on the substrate after forming the first dropping line to form a second dropping line perpendicular to the first dropping line and intersecting the first dropping line,
• wherein each of the inkjet heads comprises a plurality of nozzle holes;
• and
• wherein forming the first dropping line and forming the second dropping line comprise applying first voltage pulses and second voltage pulses to the nozzle holes for forming the first and second dropping lines, respectively, and skipping the second voltage pulses for portions where the first dropping line intersects the second dropping line.