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White light QLED member and preparation method

A device and white light technology, which is applied in semiconductor devices, electrical components, circuits, etc., can solve the problems of color coordinate shift and low light extraction efficiency, and achieve the effects of simple preparation method, improved color rendering effect, and improved performance

Inactive Publication Date: 2015-11-18
TCL CORPORATION
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Problems solved by technology

[0005] The purpose of the present invention is to provide a white light QLED device containing a light extraction layer, aiming to simultaneously solve the problem that the color coordinates of the existing surface light source white light QLED device shift with the change of the driving voltage and / or the problem of low light extraction efficiency

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  • White light QLED member and preparation method
  • White light QLED member and preparation method
  • White light QLED member and preparation method

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Embodiment Construction

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] combine Figure 1-3 , the embodiment of the present invention provides a white light QLED device, including a substrate 1, a short-wavelength QLED device 2 and a thin film encapsulation layer 3, and also includes a light extraction layer 4, and the short-wavelength QLED device 2 is stacked on the substrate 1 The thin film encapsulation layer 3 is laminated on the short-wavelength QLED device 2, and the light extraction layer 4 is provided on the opposite surface of the substrate 1 and the laminated surface of the short-wavelength QLED device 2, Wherein, the...

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Abstract

The invention is applicable to the quantum dot light emitting diode and provides a white light QLED member and a preparation method.The white light QLED member comprises a substrate, a short wave length QLED member, a film encapsulation layer and a light taking-out layer. The short wave length QLED member is arranged on the surface of the substrate in a stacking manner; the film encapsulation layer is arranged on the short wave length QLED member in a stacking manner; the light taking-out layer is arranged on the side which is opposite to the side where the short wave length QLED member is arranged in a stacking manner, wherein the light taking-out layer contains electroluminescence quantum dots and polymers.

Description

technical field [0001] The invention belongs to the field of quantum dot light-emitting diodes, and in particular relates to a white light QLED device and a preparation method. Background technique [0002] Quantum dots (quantumdots, QDs), also known as nanocrystals, are nanoparticles composed of II-VI or III-V elements. The particle size of quantum dots is generally between 1-10nm. Since electrons and holes are quantum-confined, the continuous energy band structure becomes a discrete energy level structure, which can emit fluorescence after being excited. At present, quantum dots have become a research hotspot of luminescent materials due to their advantages such as high light color purity, high luminous quantum efficiency, adjustable luminous color, and long service life. White light QLEDs based on quantum dots have broad application prospects in the fields of display and lighting. . [0003] At present, there are two main types of white QLEDs commonly used. One is to mi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/06H01L33/44
CPCH01L33/06H01L33/44
Inventor 陈亚文付东
Owner TCL CORPORATION
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