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A kind of organic electroluminescent device, light-emitting device

A technology of electroluminescent devices and electroluminescent layers, which is applied in the field of light emission, can solve problems such as limitations in the selection range, achieve the effects of wide application range, lower process precision requirements, and meet color temperature requirements

Active Publication Date: 2021-05-25
BOE TECH GRP CO LTD
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Problems solved by technology

[0004] Embodiments of the present invention provide an organic electroluminescent device and a light-emitting device, which can improve the problem in the prior art that the selection range of materials for the organic electroluminescent layer is limited in order to adjust the color temperature of mixed light

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  • A kind of organic electroluminescent device, light-emitting device
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  • A kind of organic electroluminescent device, light-emitting device

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] At present, among the commonly used materials for the organic electroluminescent layer in organic electroluminescent devices, red, green and yellow luminescent materials use phosphorescent materials, while blue light can only use fluorescent materials due to lifespan. Phosphorescent materials have much higher light efficiency than fluorescent materials. Therefore, in a vertically stacked stacked white light device, if the light efficiency of the phosphor...

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Abstract

The invention provides an organic electroluminescent device and a light-emitting device, which relate to the field of light-emitting technology and can improve the problem in the prior art that the selection range of materials for an organic electroluminescent layer is limited in order to adjust the color temperature of mixed light. The organic electroluminescent device includes at least one light emitting unit arranged on the substrate, the light emitting unit includes a first region and a second region arranged around the first region; the light emitting unit includes a At least two layers of organic electroluminescent layers with different emission colors in the first region and a carrier generation layer arranged between adjacent organic electroluminescent layers; wherein, the carrier generation layer is arranged at least In the first region, at least one of the at least two organic electroluminescent layers extends to the second region.

Description

technical field [0001] The invention relates to the technical field of light emission, in particular to an organic electroluminescent device and a light emitting device. Background technique [0002] OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) is a self-luminous semiconductor device. Compared with traditional light-emitting devices, OLED devices have high brightness, low power consumption, high response speed, wide operating temperature range, flexible Curved, easy to achieve surface light source, and soft light and other advantages. The light-emitting mechanism of OLED devices is: under the action of an external electric field, electrons and holes are respectively injected into the organic light-emitting material from the positive and negative poles, thereby migrating, recombining, and attenuating in the organic light-emitting material to emit light. [0003] In the application scenario where it is necessary to use a variety of organic light-emitting ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/50
CPCH10K59/00H10K50/16H10K50/11
Inventor 闫光吴长晏杨栋芳石守磊
Owner BOE TECH GRP CO LTD
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