Patent ID: 7616286

Claim:
A method for forming a spacer, comprising: providing a substrate that is divided into a plurality of first, second and third pixel regions, wherein the plurality of first, second and third pixel regions are defined by a plurality of gate and data lines crossing each other and wherein the plurality of third pixel regions have first and second subregions that are adjacent to one another; providing an ink jet system that includes a first head having a plurality of first nozzles and a second head having a plurality of second nozzles, wherein part of the first head overlaps with part of the second head at the plurality of third pixel regions; spraying an organic material solution onto the plurality of first pixel regions of the substrate by using some first nozzles of the first head; spraying an organic material solution onto the plurality of second pixel regions of the substrate by using some second nozzles of the second head; randomly and alternately spraying an organic material solution onto the first subregions of the substrate by using other first nozzles of the first head and onto the second subregions of the substrate by using other second nozzles of the second head, such that an organic material solution pattern having a comb-tooth shape is formed, wherein the location of the boundary between the first and second subregions varies for each row; and forming spacers by hardening the organic material solution sprayed onto the plurality of first, second and third pixel regions.