Organic electroluminescent device

Abstract

The present invention is characterized by having a structure capable of reducing the reflectance of external light when the device is not operating, that is, when the device is not emitting light. To this end, the structural components formed on the non-luminous regions are formed from a dark black matrix material. In order to have such a structure, the present organic electroluminescent device includes an indium tin oxide (ITO) layer formed on a glass substrate; an insulating layer formed on a non-light-emitting region of the ITO layer, each insulating layer being formed of a dark-colored material a plurality of walls formed on the insulating layer; and an organic electroluminescence layer and a metal layer sequentially formed on the entire structure including these walls, the organic electroluminescence layer and the metal layer being connected to the adjacent organic layer through these walls The electroluminescent layer and the metal layer are spaced apart. Each insulating layer is composed of a black matrix film formed on the ITO layer and an insulating film formed on the black matrix film and shaped to cover the black matrix material layer. On the contrary, each insulating layer formed under the wall is composed of an insulating layer formed on the ITO layer and a black matrix film formed on the insulating film. Also, in the present organic electroluminescent device, the walls may be formed with a black matrix material.

Description

technical field [0001] The present invention relates to an organic electroluminescent device, and more particularly, to an organic electroluminescent device whose contrast can be enhanced by forming structural parts on non-light-emitting regions with black matrix materials . Background technique [0002] Organic electroluminescence is a phenomenon in which excitons are formed in a thin film of (low-molecular or high-molecular) organic material by recombination of holes injected from the anode and electrons injected from the cathode, and by The energy produces light of a specific wavelength. [0003] figure 1 is a plan view of an organic electroluminescent device, and figure 2 is along figure 1 Sectional view taken along the midline A-A. These figures schematically show the basic structure of an organic electroluminescent device to which the above-mentioned phenomenon is applied. [0004] The basic structure of an organic electroluminescence device includes a glass sub...

AI Technical Summary

Problems solved by technology

[0010] Although a method for enhancing the contrast of an organic electroluminescent device having the above-mentioned general structure has been discussed and developed, the technical development for enhancing the contrast is limited due to the structure of the device and the characteristics of the materials used.

Images