Providing a spacer forming method by which spacers can be securely formed in a predetermined region on a substrate. Ink containing granular spacers is jetted onto a crossing portion of a black matrix 5 in the shape of a lattice. Red pixel R, green pixel G and blue pixel B are formed in the openings of the lattice. The spacer containing ink is jetted onto the spacer forming positions from the nozzle by the ink jetting method. Plural drops of ink 7 are jetted onto each of the spacer forming positions on one of the opposite substrates E. The gap between the opposite substrates E can be securely maintained at a constant for filling with liquid crystal.