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An organic electroluminescent device and a display device using the same

An electroluminescent device and luminescence technology, which is applied in the direction of electric solid-state devices, electrical components, semiconductor devices, etc., can solve problems such as unstable performance, many stacked layers of pixel structures, and complex driving circuits, etc., achieving fewer layers, The effect of increasing the opening area and simplifying the driving circuit

Active Publication Date: 2017-02-08
CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, what the present invention aims to solve is the problem of a large number of stacked pixel structures, complex drive circuits, and unstable performance in organic electroluminescent display devices, and provides a simple structure and drive circuit with stable performance. High-resolution organic electroluminescence device and display device using same

Method used

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  • An organic electroluminescent device and a display device using the same
  • An organic electroluminescent device and a display device using the same
  • An organic electroluminescent device and a display device using the same

Examples

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Embodiment 1

[0036] This embodiment provides an organic electroluminescent device, such as figure 2 As shown, it includes a first electrode layer 1 , a light emitting layer and a second electrode layer 2 stacked in sequence.

[0037] In this embodiment, the first electrode 1 is an indium tin oxide (ITO) layer with a thickness of 20nm. As other embodiments of the present invention, the first electrode 1 can also be other transparent conductive oxide layers, such as zinc oxide , aluminum zinc oxide, etc., or a metal layer close to transparency in the visible light region, such as Ni, Au, Pt, etc., with a thickness of 10nm to 200nm, all of which can achieve the purpose of the present invention and belong to the protection scope of the present invention.

[0038]In this embodiment, the second electrode 2 is a silver layer with a thickness of 50nm. As other embodiments of the present invention, the second electrode 2 can also be a metal material with a low work function and stacked in one or m...

Embodiment 2

[0067]This embodiment provides a display device, including an active matrix substrate, and several pixel units arranged on the active matrix substrate, and the pixel units are the organic electroluminescence device described in Embodiment 1.

[0068] In the display device described in this embodiment, each pixel unit includes RGB three-color light-emitting layers stacked in sequence, and each light-emitting layer is separated by a first carrier blocking layer and a second carrier blocking layer with opposite charge characteristics. Open, the number of stacked layers in the pixel unit is small, the structure is simple, and each sub-pixel is stacked, which effectively improves the opening area of ​​the sub-pixel and the resolution of the display device; a transparent conductive layer is also arranged between each light-emitting layer A switch transistor is arranged between the transparent conductive layers at both ends of the adjacent light-emitting layer to control the disconnec...

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Abstract

The invention discloses an organic light-emitting device. The organic light-emitting device comprises RGB three-color light-emitting layers which are vertically arranged in a stacked mode and separated through current carrier barrier layers with contrary charge properties, the number of the staked layers is small, and the structure is simple. Transparent conducting layers are arranged between the light-emitting layers, and switching transistors are arranged between the adjacent transparent conducting layers, so that on-off the light-emitting layers is controlled, it is unnecessary to arrange a driving circuit independently, the whole driving circuit is simple, the manufacturing process is simplified, and the stability of device performance is improved. The transparent conducting layers can be manufactured into grating structures, so that the external quantum efficiency of the light-emitting layers is improved, and accordingly the light outlet efficiency of the organic light-emitting device is improved. According to a display device with the organic light-emitting device, the number of the stacked layers is small, and the structure is simple; the whole driving circuit is simple, the manufacturing process is simplified, the stability of the performance of the display device is improved, and the overall resolution ratio of the organic light-emitting device is increased.

Description

technical field [0001] The invention belongs to plane display technology, in particular to an organic electroluminescent device and a display device with high aperture ratio and high resolution using the same. Background technique [0002] Organic electroluminescent display device (English full name is Organic Light-Emitting Display, referred to as OLED) has the advantages of active light emission, light and thin, large viewing angle, fast response speed, energy saving, wide temperature tolerance range, flexible display and transparent display, etc. It is regarded as the most potential new flat panel display technology of the next generation. [0003] At present, organic electroluminescent display technology has been widely used in small-sized panels such as smart phone display screens. In order to cope with the technical trend of liquid crystal display technology developing in the direction of high Also began to develop in the direction of high resolution. [0004] At thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H01L51/52H01L27/32
Inventor 刘金强平山秀雄
Owner CHENGDU VISTAR OPTEOLECTRONICS CO LTD