Patent ID: 8816363
Filing Date: 2014-08-26
Classification: H01L

Abstract:
1. An element structure of an organic light-emitting element, comprising: a first layer configured to eject holes, a surface of the first layer including a plurality of protrusions; a second layer facing the first layer and configured to eject electrons; a functional layer disposed between the first layer and the second layer, containing an organic material, and including a light-emitting layer; banks facing the first layer, partitioning the light-emitting layer, and formed by patterning a bank material layer containing a resin material; and a resin film disposed between the first layer and the light-emitting layer, and formed from the resin material contained in the bank material layer, the resin material accumulating between the plurality of protrusions in the surface of the first layer for forming the resin film, wherein the first layer includes an anode and a hole injection layer disposed above the anode, the hole injection layer contains a structure of a crystalline phase of tungsten trioxide or of a non-crystalline phase of tungsten oxide which lacks an order characteristic of the crystalline phase, and has, in an electronic state thereof, an occupied energy level that is approximately 1.8 eV to approximately 3.6 eV lower than a lowest energy level of a valence band of the hole injection layer, in terms of binding energy, and an ultraviolet photoelectron spectroscopy (UPS) spectrum of the hole injection layer, using a He I line as a light source and a normal line direction of a surface of the substrate as an electron emission angle, exhibits an upward protrusion from a first point approximately 1.8 eV lower than the lowest energy level of the valence band to a second point approximately 3.6 eV lower than the lowest energy level of the valence band, in terms of binding energy.