Organic light emitting device and method for manufacturing the same

Abstract

The present disclosure relates to an organic light emitting device, efficiency of which is improved by changing a layer structure, and a method for manufacturing the same. The organic light emitting device includes a substrate divided into and defined by first to third pixels, a first electrode disposed on the substrate and a second electrode facing the first electrode, a first light emitting layer and a second light emitting layer disposed in the first pixel and in the second pixel, respectively, between the first electrode and the second electrode, a first triplet exciton confinement layer, a third light emitting layer and a second triplet exciton confinement layer disposed over the first to third pixels in this order, on the first light emitting layer and the second light emitting layer, and a first common layer disposed between the first light emitting layer and the second light emitting layer, and the first electrode, and a second common layer disposed between the second triplet exciton confinement layer and the second electrode.

Description

technical field [0001] The present invention relates to an organic light-emitting device, and more particularly to an organic light-emitting device whose efficiency is improved by changing a layer structure and a manufacturing method thereof. Background technique [0002] As the core technology of the screen information communication era, image display devices that display various information on the screen are being developed toward thinner, lighter, portable, and higher-function trends. For this reason, as a cathode ray tube (CRT) Flat panel display devices that have problems of large weight and volume, organic light emitting displays that display images while controlling the amount of light from a light emitting layer attract much attention. [0003] Organic light-emitting displays emit light simultaneously using a thin light-emitting layer disposed between electrodes, thus advantageously realizing a paper-like film. Such an organic light emitting display is classified in...

AI Technical Summary

Problems solved by technology

However, these structures have a problem that the driving voltage increases when the color purity increases

Hybrid OLEDs with improved color purity and reduced driving voltage have not yet been developed

[0013] In addition, solution processing needs to be applied to hybrid devices, but there are layers that are not suitable for solution processing due to inherent limitations of materials, and thus, it is difficult to stabilize due to damage to the surface of layers formed when solution processing and vacuum deposition are used in combination. Apply solution processing to multiple layers efficiently

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