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OLED display panel and display device

A technology for display panels and glass substrates, applied in electrical components, circuits, diodes, etc., can solve problems such as the decrease of external light extraction efficiency and the color crosstalk of white scattering materials, so as to improve the filtering effect, improve the light extraction efficiency, and reduce the three-layer process. Effect

Pending Publication Date: 2021-09-28
XIANYANG CAIHONG OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, because the light emission direction of the QD excited light is not directional, much of the excited light is also absorbed by the BM (black spacer) (e.g. figure 2 The dotted line shown), only a small part of the light can be emitted, resulting in a decrease in the external light extraction efficiency; there is also a related technology to make BANK with white scattering materials to improve the external light extraction efficiency, but the white scattering materials will still cause color crosstalk

Method used

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  • OLED display panel and display device
  • OLED display panel and display device
  • OLED display panel and display device

Examples

Experimental program
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Embodiment 1

[0043] Such as image 3 As shown, an OLED display panel provided in an embodiment of the present disclosure includes:

[0044] glass substrate 10;

[0045] The thin film transistor array layer 401 is located on the glass substrate;

[0046] An organic light-emitting layer 402, which contains a blue organic light-emitting material, is located on the thin film transistor array layer;

[0047] Color filter layer (CF) 50, which contains quantum dot units distributed with polymer thin films, located on the organic light-emitting layer;

[0048] Wherein, the quantum dot units of the color filter layer 50 include red quantum dot units and green quantum dot units.

[0049] In this embodiment, a first polymer film is distributed in the red quantum dot unit, a second polymer film is distributed in the green quantum dot unit, and there is a gap between the red quantum dot unit and the green quantum dot unit. Spacer (BANK).

[0050] Further, the blue organic light-emitting material o...

Embodiment 2

[0062] On the basis of the first embodiment, an embodiment of the present invention further provides an OLED display device, including the OLED display panel described in any one of the first embodiment.

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Abstract

The embodiment of the invention discloses an OLED display panel. The OLED display panel comprises a glass substrate, a thin film transistor array layer positioned on the glass substrate, an organic light-emitting layer containing a blue organic light-emitting material and positioned on the thin film transistor array layer, and a color film layer containing quantum dot units on which polymer films are distributed and positioned on the organic light-emitting layer, wherein the quantum dot units of the color film layer comprise red quantum dot units and green quantum dot units. Specifically, the polymer film is made of a QD combined with a material with photonic crystal characteristics, and large-angle light excited by the QD is reflected by a photonic crystal, so that exciting light which is originally absorbed or scattered by a spacer is partially recovered or effectively used; and by designing and adjusting the stacking distance and the frequency spectrum of the photonic crystal, the range of the whole excited emergent light which can reach the outside is expanded to at least half of the stereoangle range, so that the overall light-emitting efficiency is improved.

Description

technical field [0001] The present disclosure relates to the display field, and in particular to an OLED display panel and a display device. Background technique [0002] With the continuous improvement of people's living standards, the market requirements for large-area, ultra-thin and flexible display panels and lighting systems for healthy and intelligent display technologies will gradually become an urgent need for people's lives. Global LCD (Liquid-crystal display liquid crystal display) ) Panel demand is stagnant, facing the crisis of overcapacity. The new display technology has rapidly occupied the market and has become the research and development focus of major companies. Among them, organic electroluminescent diode or organic light-emitting diode (organic light-emitting diode, OLED) technology has low driving voltage, high efficiency, fast response, wide Viewing angle, thin and large area, and flexible display can be realized, which has attracted extensive attenti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H01L51/50H01L51/52
CPCH10K59/30H10K59/38H10K30/865H10K50/115H10K50/00H10K50/85H10K50/856
Inventor 申屠永华梁靖靖
Owner XIANYANG CAIHONG OPTOELECTRONICS TECH CO LTD