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A kind of organic light-emitting display device and preparation method thereof

A light-emitting display and organic technology, applied in semiconductor/solid-state device manufacturing, electrical components, electric solid-state devices, etc., can solve the problems of narrow color gamut, high power consumption of the filter method, etc., to improve brightness, suitable for large-scale industries The effect of production and reduction of light wave loss

Active Publication Date: 2017-10-13
BAZHOU YUNGU ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, what the present invention aims to solve is the problem of large power consumption and narrow color gamut of the optical filter method in the existing full-color method of organic light-emitting display devices, thereby providing a full-color organic light-emitting display with low power consumption and wide color gamut. Light-emitting display device

Method used

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  • A kind of organic light-emitting display device and preparation method thereof
  • A kind of organic light-emitting display device and preparation method thereof
  • A kind of organic light-emitting display device and preparation method thereof

Examples

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Embodiment 1

[0040] This embodiment provides an organic light emitting display device A, such as figure 1 As shown, it includes several organic light emitting diodes 5 arranged in the same layer, and a layered filter unit 22 stacked on the light emitting surface of each organic light emitting diode 5; the filter unit 22 and the organic light emitting diode 5 A layered light extraction unit 4 is stacked between them, and the light extraction unit 4 is a scattering medium layer doped with a light conversion material 43 for improving the light extraction efficiency of the organic light emitting diode; the light conversion material 43 The light in the cut-off wavelength band of the region corresponding to the filter unit 22 can be converted into a filtered light wavelength band. In this embodiment, the organic light emitting display device A is a bottom emission device, and the organic light emitting diode 5 is formed on the substrate 1 provided with the filter unit 22 .

[0041] As an altern...

Embodiment 2

[0068] This embodiment provides an organic light emitting display device B, such as figure 2 As shown, it includes several organic light-emitting diodes 5 arranged in the same layer, and a light extraction unit 4 and a filter unit 22 stacked on the light-emitting surface of each organic light-emitting diode 5; its structure and preparation method are the same as in Example 1, The difference lies in that the scattering medium layer in the light extraction unit 4 (refer to the structure in the dotted line box) is a microcrystal array 41, and the microcrystal array 41 further includes several transparent columns of equal height arranged in an array.

[0069] The transparent column is made of TiO 2 , SiO 2 、SiN x 、Al 2 o 3 , ZnO, indium tin oxide or one or more forms. The periodic structures of the transparent column arrays corresponding to different organic light emitting diodes 5 are the same or different.

[0070] In this embodiment, the transparent column is preferably ...

Embodiment 3

[0075] This embodiment provides an organic light emitting display device C, such as image 3 As shown, its structure and preparation method are the same as those in Example 2, the difference lies in that the periodic structure of the transparent column arrays corresponding to different organic light emitting diodes 5 is different.

[0076] In this embodiment, the transparent column is preferably SiN x , the height is 200nm, the periodic structures of the transparent column arrays corresponding to the organic light emitting diodes 5 of different pixels are different, and the structures are all triangular periodic arrangements, the red light filter unit, the green light filter unit, the blue light filter unit The lattice constants of the transparent column arrays corresponding to the filter units are 245nm, 208nm and 180nm respectively.

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Abstract

The present invention belongs to the field of display technology, and relates to an organic light-emitting display device, which includes a plurality of organic light-emitting diodes arranged in the same layer, and a light extraction unit and a filter unit stacked on the light-emitting surface of each organic light-emitting diode. The light extraction unit is a scattering medium layer doped with a light conversion material; the light conversion material can convert the light in the cut-off light band of the region corresponding to the filter unit into a filtered light band. The scattering medium in the light extraction unit scatters the light emitted by the organic light-emitting diode, which can effectively reduce the total reflection, thereby reducing the loss of light waves; at the same time, the light conversion material doped in the scattering medium layer cuts off the light in these scattered light The light in the wavelength band is converted into the light in the filtered light band, which further improves the light extraction efficiency; thereby effectively improving the current efficiency of the organic light emitting diode, thereby reducing the power consumption of the organic light emitting device, and improving the use of the organic light emitting device life.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an organic light-emitting display device and a preparation method thereof. Background technique [0002] The full-color display scheme in the prior art can be divided into active luminescence and passive luminescence. The representative of passive luminescence is the liquid crystal display (full name in English, Liquid Crystal Display, LCD for short), and the representative of passive luminescence is organic light-emitting device (full name in English). It is Organic lighting Emitting Display, referred to as OLED). [0003] Among them, compared with liquid crystal displays, organic light-emitting devices have the advantages of high contrast, wide viewing angle, low power consumption, and thinner volume. [0004] Among the full-color methods of organic light-emitting display devices, the RGB (three primary colors are Red, Green, Blue, referred to as RGB) pixel juxtaposition meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/52H01L51/56
Inventor 李梦真张国辉刘嵩
Owner BAZHOU YUNGU ELECTRONICS TECH CO LTD