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A kind of OLED white light device based on quantum dots and its manufacturing method

A technology of white light devices and quantum dots, which is applied in the field of OLED white light devices based on quantum dots, can solve problems such as color coordinate drift, and achieve the effects of high luminous efficiency, good light stability and low production cost

Active Publication Date: 2017-09-15
SHENZHEN DANBANG INVESTMENT GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The biggest disadvantage of this device structure is that as the driving voltage increases, the carrier recombination area in the device changes greatly, resulting in the drift of the color coordinates.

Method used

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  • A kind of OLED white light device based on quantum dots and its manufacturing method
  • A kind of OLED white light device based on quantum dots and its manufacturing method
  • A kind of OLED white light device based on quantum dots and its manufacturing method

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Embodiment Construction

[0029] Embodiments of the present invention will be described in detail below. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0030] refer to figure 1 , Figure 6 and Figure 8 According to an embodiment of the present invention, a quantum dot-based OLED white light device includes a substrate 1 , a blue OLED device 2 , a quantum dot layer 3 and a thin film encapsulation layer 4 . The substrate 1 can be a flexible transparent or opaque substrate. The substrate 1 may be a plastic substrate. The thin-film encapsulation layer 4 can be a single-layer thin film, a multi-layer thin film, an organic-inorganic composite thin film, and the like. The function of the thin film encapsulation layer 4 is to encapsulate the substrate 1 or the blue OLED device 2 to prevent the permeation of water or oxygen from causing harm to the OLED and quantum dots.

[0031] A typical structure of t...

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Abstract

The invention discloses a quantum dot-based OLED white light device, which includes a substrate, a blue OLED device, a quantum dot layer and a thin film encapsulation layer, and is stacked so that the light emitted by the blue OLED device excites the quantum dot layer. Quantum dots, the quantum dot layer emits light to the OLED white light device, and the light emitted from the quantum dot layer is white light synthesized from the light emitted by the blue OLED device and the light emitted by the quantum dots. The invention also discloses a manufacturing method of the OLED white light device. The OLED white light device of the invention has high color purity, excellent light stability and low production cost.

Description

technical field [0001] The invention relates to a quantum dot-based OLED white light device. Background technique [0002] White light OLED technology has made great progress in the past 20 years. The advantages of low cost, short response time, high brightness, low driving voltage and flexible light source make it a light source technology with broad development space. Commonly used multi-light-emitting layer white light OLEDs mix monochromatic light emitted by different light-emitting layers into white light, and the color purity of the device can be effectively adjusted by adjusting the thickness and doping concentration of each light-emitting layer. The biggest disadvantage of this device structure is that as the driving voltage increases, the carrier recombination area in the device changes greatly, resulting in the drift of the color coordinates. [0003] The down-conversion structure white light OLED is to prepare the down-conversion layer of green light and red ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/52H01L51/56
CPCH10K50/85H10K71/00
Inventor 刘萍
Owner SHENZHEN DANBANG INVESTMENT GROUP
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