A kind of organic electroluminescent device and display device

Abstract

The invention discloses an organic electroluminescent device and a display device, which relate to the technical field of organic electroluminescence. In order to solve the device structure of a hybrid manufacturing process, when a red light-emitting layer and / or a green light-emitting layer are required to emit light, blue The problem that the first part of the emissive layer emits light at the same time. The material of the blue light-emitting layer in the organic electroluminescent device includes an electron transport material and a hole transport material capable of forming a blue light exciplex; The ratio of all materials in the layer is matched with the ability of the red light-emitting layer and the green light-emitting layer to transport electrons, so that when the red light-emitting layer and / or the green light-emitting layer are required to emit light, the electrons and holes will not emit light in the blue Composite the interior and edges of the first part of the layer. The organic electroluminescent device provided by the invention is used for emitting light.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to an organic electroluminescence device and a display device. Background technique [0002] Active-matrix organic light emitting diode (AMOLED) display devices have been widely used in TVs and mobile devices due to their advantages such as wide viewing angle, high color gamut, and fast response speed. middle. At present, most AMOLED display devices adopt the full vapor deposition process to achieve mass production, and the full color display through the full vapor deposition process usually adopts RGB arrangement, which is defined by FMM (fine metal shadow mask) Pixels of different colors can be produced, but this method cannot achieve large-scale display due to the limitation of the size of the FMM. [0003] In order to realize large-scale display, a solution process is introduced in the production of AMOLED display devices in the prior art. This solution pro...

AI Technical Summary

Problems solved by technology

However, it is found during actual testing and application that the organic electroluminescent device with the above structure usually has the problem that the first part of the blue emitting layer emits light at the same time when the red emitting layer and / or the green emitting layer are required to emit light.

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