QLED having optical microcavity structure and preparation method thereof

An optical microcavity and quantum dot light-emitting technology, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problem that the performance of QLED devices is difficult to improve and achieve good market prospects, simple and easy to control, and increase luminous intensity Effect

Inactive Publication Date: 2015-12-16
TCL CORPORATION
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  • Application Information

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Problems solved by technology

It is generally believed that the performance of QLEDs is jointly determined by the above-mentioned functional layers and their manufa

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  • QLED having optical microcavity structure and preparation method thereof
  • QLED having optical microcavity structure and preparation method thereof
  • QLED having optical microcavity structure and preparation method thereof

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[0020] In order to make the technical problems, technical solutions, and beneficial effects to be solved by the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0021] Combine Figure 2-5 The embodiment of the present invention provides a QLED with an optical microcavity structure, including a first electrode 1, a quantum dot light-emitting layer 4, and a second electrode 7 stacked in sequence, wherein the first electrode 1, the second electrode The two electrodes 7 are respectively an anode and a cathode; or the first electrode 1 and the second electrode 7 are respectively a cathode and an anode, and further includes a side of the first electrode 1 away from the quantum dot light-emitting layer 4 The optical microcavit...

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Abstract

The invention is suitable for the field of a quantum dot light-emitting diode and provides a QLED having an optical microcavity structure and a preparation method thereof. The QLED having the optical microcavity structure comprises a first electrode, a quantum dot light-emitting layer and a second electrode, which are in stack arrangement in sequence, wherein the first electrode and the second electrode are positive pole and negative pole respectively, or the first electrode and the second electrode are negative pole and positive pole respectively. The QLED further comprises the optical microcavity structure which is arranged at the side, away from the quantum dot light-emitting layer, of the first electrode. The optical microcavity structure is formed by one interference unit or a plurality of interference units in stack arrangement. Each interference unit comprises a first refractive index layer and a second refractive index layer stacked on the first refractive index layer, wherein refractive index of the first refractive index layer is larger than that of the second refractive index layer, and the first electrode is stacked on the second refractive index layer.

Description

technical field [0001] The invention belongs to the field of quantum dot light-emitting diodes, in particular to a QLED with an optical microcavity structure and a preparation method thereof. Background technique [0002] With the continuous development of economy and technology, people have higher and higher requirements on the display quality of electronic products. After years of development, quantum dot light-emitting diode (QLED), a new display technology, has gradually come into people's sight. QLED uses thin-layer quantum dots as the light-emitting layer, and has a series of advantages such as active light emission, high brightness, high color purity, long life, low power consumption, simple processing technology, and low production cost. It is the next generation of high-performance display and lighting technology. Direction of development. Such as figure 1 As shown, a common QLED usually includes the following functional layers: anode 1', hole injection layer 2',...

Claims

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Application Information

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IPC IPC(8): H01L33/02H01L33/06H01L33/10H01L33/00
CPCH01L33/02H01L33/005H01L33/06H01L33/10H01L33/105
Inventor 肖标付东闫晓林
Owner TCL CORPORATION
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