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Organic electroluminescent device and preparation method thereof

An electroluminescent device and luminescent technology, applied in the field of electric light sources, can solve the problems of OLED luminous efficiency and low luminous intensity, and achieve the effects of improving luminous performance, increasing luminous brightness, and stable luminous performance

Active Publication Date: 2012-09-19
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the more prominent shortcomings are that the existing OLED luminous efficiency and luminous intensity are not high

Method used

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  • Organic electroluminescent device and preparation method thereof
  • Organic electroluminescent device and preparation method thereof
  • Organic electroluminescent device and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0036] The embodiment of the present invention also provides the preparation method of the above-mentioned organic electroluminescent device, the process flow chart of the method is as follows Figure 5 shown, see also figure 1 or figure 2 or image 3 , the method includes the following steps:

[0037] S1. Provide a transparent substrate with opposite first surface and second surface, on the first surface of the transparent substrate, form the convex portion 11 of the convex lens type of array distribution, and form the concave portion 12 of the concave lens type of array distribution on the second surface, prepare Form a transparent substrate 1; wherein, the first surface of the transparent substrate constitutes the first surface of the light-transmitting substrate 1, and the second surface of the transparent substrate is the second surface of the light-transmitting substrate 1;

[0038] S2. Evaporating the anode layer 2 on the second surface of the light-transmitting bas...

Embodiment 1

[0051] The structure of the organic electroluminescent device of this embodiment is as follows figure 1 As shown, the organic electroluminescent device includes a light-transmitting base layer 1 , an anode layer 2 , a hole transport layer 32 , a light-emitting layer 33 , an electron transport layer 34 and a cathode layer 4 which are stacked in sequence. Wherein, the surface of each layer of the light-transmitting base layer 1, the anode layer 2, the hole transport layer 32, the light emitting layer 33, the electron transport layer 34, and the cathode layer 4 is respectively provided with convex lens-shaped protrusions distributed in an array. The other surface opposite to the surface of the convex part is provided with a concave lens-type concave part distributed in an array; The recesses and protrusions between two adjacent layers are superimposed on each other; the surface of the light-transmitting base layer 1 with the protrusions 11 is the outer surface of the organic elec...

Embodiment 2

[0063] The structure of the organic electroluminescent device of this embodiment is as follows figure 2 As shown, the organic electroluminescent device includes a light-transmitting base layer 1, an anode layer 2, a hole injection layer 31, a red light emitting layer 331, a blue light emitting layer 333, an electron injection layer 35 and a cathode layer 4 which are stacked in sequence. Among them, the surface of each layer of the light-transmitting base layer 1, the anode layer 2, the hole injection layer 31, the red light emitting layer 331, the blue light emitting layer 333, the electron injection layer 35, and the cathode layer 4 is respectively provided with an array of convex lens type Convex part, on the other surface opposite to the surface of the corresponding protruding part, there are concave lens-type concave parts distributed in array; The recesses and protrusions between two adjacent layers of the blue light emitting layer 333, the electron injection layer 35 an...

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Abstract

The invention discloses an organic electroluminescent device. The organic electroluminescent device comprises a light-transmitting bottom layer, an anode layer, an organic electroluminescent structure and a cathode layer which are superimposed in sequence, wherein the surfaces of the light-transmitting bottom layer, the anode layer, the organic electroluminescent structure and the cathode layer are respectively provided with convex-lens type convex parts in array distribution; the other surfaces opposite to the surface with the convex parts are provided with concave-lens type concave parts in array distribution; the concave parts and the convex parts between the two adjacent layers are superimposed; the surface of the light-transmitting bottom layer with the convex parts in array distribution is used as a light-emergent surface; and the organic electroluminescent structure contains at least one light emitting layer. The organic electroluminescent device disclosed by the invention has the advantages of simple procedures in a preparation method, improvement of production efficiency, reduction of production cost and suitability for industrial production.

Description

technical field [0001] The invention belongs to the technical field of electric light sources, and in particular relates to an organic electroluminescent device and a preparation method thereof. Background technique [0002] The electric light source industry has always been a hotspot of research by countries all over the world, and occupies a very important position in the world economy. At present, the widely used light source is gas discharge light source. The principle of this light source is to fill the inside of the lamp with a mixed gas containing mercury after vacuuming, and use gas discharge to emit light or ultraviolet light generated by gas discharge to excite phosphors to emit light. However, the pulsed flashes of gas discharge light sources can easily cause visual fatigue, and mercury pollutes the environment. With the advancement of society and technology, research and development of energy-saving and environmentally friendly green light sources to replace trad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/50H01L51/56
Inventor 周明杰王平钟铁涛冯小明
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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