An organic EL display panel comprising: a substrate; anode electrodes set on the substrate; a hole transport layer provided on the substrate provided with the anode electrodes; banks defining a pixel region, the banks being set on the hole transport layer; an organic EL layer in the pixel region; and a cathode electrode provided on the organic EL layer; characterized in that the banks are line-state banks which are electrically insulating, the pixel region defined by the banks is a line-state pixel region, the organic EL display panel further comprises: a line-state interlayer (7, FIG. 4A) formed on hole transport layer (5, FIG. 4A) in the pixel region (17, FIG. 4A) and polymer organic EL layer (13, FIG. 4A) set on interlayer (7, FIG. 4A) in pixel region (17, FIG. 4A), and second banks, which are electrically insulating, defining two or more sub pixel regions inside the pixel region, wherein the second banks (11, FIG. 4A) being set on the hole transport layer (5, FIG.4A) thereby defining the interlayer (7, FIG. 4A) and the polymer organic EL layer (13, FIG. 4A), the second bank has a groove for connecting the adjacent sub pixel regions with each other, and the organic EL layer is a line-state polymer organic EL layer set on the interlayer in the pixel region. a substrate; anode electrodes set on the substrate; a hole transport layer provided on the substrate provided with the anode electrodes; banks defining a pixel region, the banks being set on the hole transport layer; an organic EL layer in the pixel region; and a cathode electrode provided on the organic EL layer; characterized in that the banks are line-state banks which are electrically insulating, the pixel region defined by the banks is a line-state pixel region, the organic EL display panel further comprises: a line-state interlayer (7, FIG. 4A) formed on hole transport layer (5, FIG. 4A) in the pixel region (17, FIG. 4A) and polymer organic EL layer (13, FIG. 4A) set on interlayer (7, FIG. 4A) in pixel region (17, FIG. 4A), and second banks, which are electrically insulating, defining two or more sub pixel regions inside the pixel region, wherein the second banks (11, FIG. 4A) being set on the hole transport layer (5, FIG.4A) thereby defining the interlayer (7, FIG. 4A) and the polymer organic EL layer (13, FIG. 4A), the second bank has a groove for connecting the adjacent sub pixel regions with each other, and the organic EL layer is a line-state polymer organic EL layer set on the interlayer in the pixel region. a line-state interlayer (7, FIG. 4A) formed on hole transport layer (5, FIG. 4A) in the pixel region (17, FIG. 4A) and polymer organic EL layer (13, FIG. 4A) set on interlayer (7, FIG. 4A) in pixel region (17, FIG. 4A), and second banks, which are electrically insulating, defining two or more sub pixel regions inside the pixel region, wherein the second banks (11, FIG. 4A) being set on the hole transport layer (5, FIG.4A) thereby defining the interlayer (7, FIG. 4A) and the polymer organic EL layer (13, FIG. 4A), the second bank has a groove for connecting the adjacent sub pixel regions with each other, and the organic EL layer is a line-state polymer organic EL layer set on the interlayer in the pixel region.