Light conversion unit having color conversion function and application thereof

A color conversion and light conversion technology, applied in the direction of organic light-emitting device, organic light-emitting device structure, organic light-emitting device manufacturing/processing, etc. Strength, the effect of improving conversion efficiency

Inactive Publication Date: 2015-03-25
BEIJING VISIONOX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, what the present invention is to solve is the problem of low light conversion and light extraction efficiency of OLED devices, and a light conversion unit with color

Method used

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  • Light conversion unit having color conversion function and application thereof
  • Light conversion unit having color conversion function and application thereof
  • Light conversion unit having color conversion function and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0043] Example 1 Organic electroluminescent device in top emission mode

[0044] figure 2 The organic electroluminescent device shown in the top emission mode is that the reflective layer 6 is disposed on the substrate 1, and the reflective layer 6 is sequentially above the color conversion layer 5, the transflective conductive layer 4, and the organic functional layer 3. And second electrode layer 2. The light conversion unit is applied to a top-emitting white light OLED. The top-emitting white light OLED includes a transparent electrode layer 2, a light emitting layer 3 and figure 1 As shown in the light conversion unit, the transflective conductive layer 4 of the light conversion unit is in contact with the light emitting layer 3. The electroluminescence spectrum of the light-emitting layer 3 contains at least the blue component, and the color conversion layer is added with yellow or red, green color conversion material CdSe / CdS quantum dots (CdS-coated CdSe core-shell struct...

Example Embodiment

[0065] Example 2 Organic electroluminescent device in bottom emission mode

[0066] image 3 The organic electroluminescent device shown in the bottom emission mode is that the organic electroluminescent device is in the bottom emission mode, the second electrode layer 2 is disposed on the substrate 1, and the second electrode layer 2 is sequentially disposed above the second electrode layer 2. The organic functional layer 3, the semi-transmissive and semi-reflective conductive layer 4, the color conversion layer 5 and the reflective layer 6 are described. The electroluminescence spectrum of the light-emitting layer 3 contains at least the blue component. By adding yellow or red and green color conversion material CdSe / CdS quantum dots to the color conversion layer, and adjusting the thickness of the color conversion layer to enhance the absorption of the blue component, Finally, the conversion efficiency of the blue component can be improved, thereby adjusting the emission spec...

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Abstract

The invention discloses a light conversion unit having a color conversion function. The light conversion unit comprises a semi-permeant semi-reflecting conductive layer, a color conversion layer and a reflecting layer, wherein the semi-permeant semi-reflecting conductive layer, the color conversion layer and the reflecting layer are arranged in an overlaid mode. The invention further relates to an organic electroluminescence device with the light conversion unit. The organic electroluminescence device comprises the light conversion unit, an organic function layer and a second electrode layer, wherein the light conversion unit, the organic function layer and the second electrode layer are arranged in an overlaid mode, and the semi-permeant semi-reflecting conductive layer of the light conversion unit is close to the organic function layer. The organic electroluminescence device with the light conversion unit has high light conversion efficiency and light extraction efficiency.

Description

technical field [0001] The invention relates to the field of organic electroluminescence, in particular to a light conversion unit with color conversion function and the application of the electrode layer in organic electroluminescence devices. Background technique [0002] After nearly 30 years of development, organic electroluminescent devices (English full name Organic Light Emitting Device, referred to as OLED) as the next generation of lighting and display technology, has a wide color gamut, fast response, wide viewing angle, no pollution, high contrast , Planarization and other advantages have been applied to a certain extent in lighting and display. A typical organic electroluminescent device generally includes a transparent substrate, a transparent anode, a cathode, and an organic functional layer arranged between the two electrodes. Due to the application of phosphorescent materials, its internal quantum efficiency has almost reached the theoretical limit of 100%, ...

Claims

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Application Information

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IPC IPC(8): H01L51/52H01L51/50
CPCH10K50/80H10K50/85H10K50/11H10K50/856H10K50/858H10K2102/302H10K71/00
Inventor 高松刘嵩
Owner BEIJING VISIONOX TECH
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