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A kind of oled light-emitting device and its preparation method, display device

A technology of light-emitting devices and display devices, which is applied in semiconductor/solid-state device manufacturing, semiconductor devices, electric solid-state devices, etc., and can solve problems such as low light output efficiency and total reflection

Active Publication Date: 2015-09-02
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the light output efficiency of OLED is relatively low. Generally speaking, only a small amount of light energy can pass through the glass substrate and emit into the air. One reason is that the refractive index of organic matter is higher than that of glass and air, and the refractive index of glass is also higher than that of air. Higher than the air, when the light emitted by the light-emitting layer is emitted to the glass and air, there will be total reflection phenomenon, that is, the light has a waveguide phenomenon inside the organic layer and glass and is enclosed in the organic film and glass substrate and cannot be emitted into the air. , this enclosed light is called waveguide mode light

Method used

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  • A kind of oled light-emitting device and its preparation method, display device

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Embodiment Construction

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0034] The embodiment of the present invention provides an OLED light emitting device 10, such as Figure 1 to Figure 3 As shown, the OLED light-emitting device 10 includes: a base substrate 100, a first electrode 200, an organic material functional layer 300, a transparent or semi-transparent second electrode 400 arranged on the base substrate in sequence, and a The second electrode 400 is away from the cover layer 500 on the side of th...

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Abstract

The embodiment of the invention provides an OLED light-emitting device, a manufacturing method of the OLED light-emitting device and a display device and relates to the technical field of display. Light loss in a waveguide mode can be reduced and the light output efficiency can be improved. The OLED light-emitting device comprises a substrate, wherein a first electrode, an organic material functional layer, a transparent or semitransparent second electrode and a covering layer are sequentially arranged on the substrate, the covering layer is arranged on the side, far away from the substrate, of the second electrode, and the surface, far away from the substrate, of the covering layer is uneven. The OLED light-emitting device, the display device and the manufacturing method of the OLED light-emitting device are used for reducing light loss in the waveguide mode and improving the light output efficiency.

Description

Technical field [0001] The invention relates to the field of display technology, in particular to an OLED light-emitting device, a preparation method thereof, and a display device. Background technique [0002] Organic Light Emitting Diode (OLED) is an organic thin-film electroluminescent device, which has the advantages of simple manufacturing process, low cost, easy to form a flexible structure, and wide viewing angle; therefore, the display technology of organic light emitting diodes Has become an important display technology. [0003] At present, the light output efficiency of OLED is relatively low. Generally speaking, only a small amount of light energy can be emitted into the air through the glass substrate. One reason is that the refractive index of organic matter is higher than that of glass and air, and the refractive index of glass is Higher than air, the light emitted by the light-emitting layer will exhibit total reflection when it is emitted to the glass and air, tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H01L51/56H01L27/32
CPCH10K59/122H10K59/12H10K59/873H10K59/879H10K59/123H10K50/844H10K50/858H10K71/00H10K59/1201
Inventor 马文昱
Owner BOE TECH GRP CO LTD
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