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Quantum-dot-based white OLEG device and manufacturing method thereof

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: 2015-04-29
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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  • Quantum-dot-based white OLEG device and manufacturing method thereof
  • Quantum-dot-based white OLEG device and manufacturing method thereof
  • Quantum-dot-based white OLEG device and manufacturing method thereof

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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 exemplary only, and is not intended to limit the scope of the invention and its application.

[0030] see figure 1 , Image 6 and Figure 8 , According to an embodiment of the present invention, an OLED white light device based on quantum dots includes a substrate 1 , a blue light 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 film, a multi-layer film, an organic & inorganic composite film, and the like. The function of the thin film encapsulation layer 4 is to encapsulate the substrate 1 or the blue-light OLED device 2 to prevent the permeation of water or oxygen from causing harm to the OLED and the quantum dots.

[0031] The typical stru...

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Abstract

The invention discloses a quantum-dot-based white OLED device. The white OLED device comprises a substrate, a blue OLEG device, a quantum dot layer and a thin-film packaging layer, which are laminated to enable light emitted by the blue OLEG device to excite quantum dots in the quantum dot layer, wherein light is emitted out of the white OLED device through the quantum dot layer, and the light emitted by the quantum dot layer is white light synthesized by light emitted by the blue OLED device and light emitted by the quantum dots. The invention further discloses a manufacturing method for the white OLED device. The white OLED device is high in color purity and light stability and low in manufacturing cost.

Description

technical field [0001] The invention relates to an OLED white light device based on quantum dots. Background technique [0002] White 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 wide development space. The commonly used white light OLED with multiple light-emitting layers mixes 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 with the increase of driving voltage, the carrier recombination region in the device changes greatly, resulting in the shift of color coordinates. [0003] Down-conversion structure white light OLED is a down-conversion layer that prepares green and red li...

Claims

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Application Information

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