| abstract |
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic electroluminescent device and a method of manufacturing the same, comprising: an insulating substrate having a first pixel region, a second pixel region, and a third pixel region; and the first, second, and third pixel regions on the substrate A first electrode layer formed on each side, a hole injection layer formed on the first electrode layer over the entire substrate, and formed on the first electrode layer and formed on the first, second, and third pixel regions; A second hole transport layer formed over the first hole transport layer in the first hole transport layer, the second pixel region, and the third pixel region; and a third hole formed over the second hole transport layer in the third pixel region. A transport layer, a first organic light emitting layer, a second organic light emitting layer and a third organic light emitting layer formed on the first, the second and the third hole transport layer, and the first organic light emitting layer, the second organic And a second electrode layer formed on the light emitting layer and the third organic light emitting layer, wherein the thickness of the second hole transport layer is 1/3 to 2/3 of the difference in light wavelength between the first pixel area and the second pixel area. By providing a thickness of the third hole transport layer is 1/3 to 2/3 of the difference between the light wavelength of the second pixel region and the third pixel region, by providing an organic EL device and a method of manufacturing the same, It is possible to provide a display element having an optimal resonant structure.n n n n Full color organic electroluminescent device, hole transport layer, high definition mask, resonant structure |