Unlock instant, AI-driven research and patent intelligence for your innovation.

Organic electroluminescent element and organic electroluminescent display panel

A technology of electroluminescent display and display panel, which is applied in the direction of electrical components, organic semiconductor devices, electric solid devices, etc., to achieve the effect of improving luminous efficiency and good manufacturing efficiency

Active Publication Date: 2018-04-03
SHARP KK
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reasons for this are explained below

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic electroluminescent element and organic electroluminescent display panel
  • Organic electroluminescent element and organic electroluminescent display panel
  • Organic electroluminescent element and organic electroluminescent display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1 relates to an organic EL element including an anode, a light-emitting layer, and a cathode in order from the substrate side, and an organic EL display panel provided with the above-mentioned organic EL element, the light-emitting layer having a light-emitting dopant layer on the anode side, and a light-emitting host on the cathode side layer.

[0064] figure 1 is a schematic cross-sectional view showing the organic EL display panel of Example 1. Such as figure 1 As shown, the organic EL display panel 1 a includes a substrate 2 and an organic EL element 3 a disposed on the substrate 2 . The organic EL element 3a has an anode 4, a hole injection layer 6, a hole transport layer 7, a light emitting layer 8a, an electron transport layer 9, an electron injection layer 10, and a cathode 5 in order from the substrate 2 side. The light emitting layer 8a has a light emitting dopant layer 11a on the anode 4 side and a light emitting host layer 12a on the cathode ...

Embodiment 2

[0082] Embodiment 2 relates to an organic EL element including an anode, a light-emitting layer, and a cathode in order from the substrate side, and an organic EL display panel provided with the above-mentioned organic EL element. The light-emitting layer has a light-emitting matrix layer on the anode side and a light-emitting dopant on the cathode side. layer. The organic EL device of Example 2 is the same as the organic EL device of Example 1 except for the arrangement of the light-emitting dopant layer and the light-emitting host layer, and therefore descriptions of overlapping points are omitted.

[0083] image 3 is a schematic cross-sectional view showing the organic EL display panel of Example 2. Such as image 3 As shown, the organic EL display panel 1b includes a substrate 2 and organic EL elements 3b disposed on the substrate 2 . The organic EL element 3b has an anode 4, a hole injection layer 6, a hole transport layer 7, a light emitting layer 8b, an electron tra...

Embodiment 3

[0090]Embodiment 3 relates to an organic EL element including an anode, a light-emitting layer, and a cathode in this order from the substrate side, and a top-emission organic EL display panel equipped with the above-mentioned organic EL element, the light-emitting layer has a light-emitting dopant layer on the anode side, and The side has a luminescent matrix layer. Furthermore, it relates to the case where a doped electron transport layer is arranged between the luminescent host layer and the cathode, wherein the doped electron transport layer is made of a material obtained by doping an n-type impurity into a substance having electron transport properties. The organic EL element of Example 3 is the same as the organic EL element of Example 1 except that a doped electron transport layer is arranged instead of an electron transport layer and an electron injection layer is not arranged. Therefore, descriptions of overlapping points are omitted.

[0091] Figure 5 is a schemati...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides an organic electroluminescent element capable of sufficiently improving luminous efficiency and achieving good manufacturing efficiency, and an organic electroluminescent display panel including the organic electroluminescent element. The organic electroluminescence element of the present invention comprises an anode, a light-emitting layer and a cathode in sequence, the above-mentioned light-emitting layer has a light-emitting dopant layer and a light-emitting host layer, and the above-mentioned light-emitting dopant layer contains a light-emitting dopant material and substantially does not contain a light-emitting host material, the luminescent host layer contains a luminescent host material and substantially does not contain a luminescent dopant material.

Description

technical field [0001] The present invention relates to an organic electroluminescent element (hereinafter also referred to as "organic EL element") and an organic electroluminescent display panel (hereinafter also referred to as "organic EL display panel"). More specifically, it relates to an organic EL element with high luminous efficiency and an organic EL display panel including the organic EL element. Background technique [0002] In recent years, organic EL elements using electroluminescence of organic materials have attracted attention as display elements used in thin display devices. In an organic EL element, holes injected from the anode and electrons injected from the cathode recombine in a light emitting layer arranged between both electrodes to emit light. This self-luminous organic EL element has excellent characteristics such as high luminance, fast response, wide viewing angle, thin and light weight, and is expected to be used in various fields such as displa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50G09F9/30H01L27/32H10K99/00
CPCH10K50/11H10K2101/40H10K50/165H10K2101/30H10K59/80524H10K50/15H10K50/16H10K50/17H10K50/171H10K50/828H10K59/12H10K85/342H10K85/626H10K85/633H10K85/636H10K85/6572H10K2101/10H10K2102/00H10K2102/103H10K2102/351H10K2102/3026
Inventor 塚本优人菊池克浩二星学矶村良幸内田秀树远藤礼隆伊藤麻绘
Owner SHARP KK