Patent ID: 7896722

Claim:
A manufacturing method of a display device including a display panel comprising display elements which emit light, the method comprising: heating at a first temperature, only a first predetermined region including a corner section of an internal wall of a partitioning wall, wherein the partitioning wall is formed on one surface of a substrate and defines a plurality of surrounded-regions each of which is surrounded by the partitioning wall and includes a plurality of pixel-regions on which pixels are to be formed, and heating only a second predetermined region, including a non-corner section of the internal wall of the partitioning wall, at a second temperature lower than the first temperature, wherein each of the first predetermined region and the second predetermined region includes at least a part of pixel-regions; and coating a containing liquid which contains a carrier transporting material on the pixel-regions; wherein the partitioning wall defines the plurality of surrounded-regions so that the plurality of surrounded-regions are arrayed in a single line along a first direction, and each of the plurality of surrounded-regions includes the plurality of pixel-regions which are arrayed along a second direction that is perpendicular to the first direction; wherein the first predetermined region consists of an area including a first end part of each of the surrounded-regions in the second direction and an area including a second end part of each of the surrounded-regions in the second direction, each end part contacting the partitioning wall at three sides thereof; wherein the second predetermined region consists of an area including a remaining part of each of the surrounded-regions, the remaining parts contacting the partitioning wall at two opposing sides thereof; and wherein when coating the containing liquid in each of the surrounded regions, the containing liquid is continuously applied to the parts of the surrounded region corresponding to the first predetermined region and the remaining part of the surrounded region corresponding to the second predetermined region, while the first predetermined region has been heated at the first temperature and while the second predetermined region has been heated at the second temperature.