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Quantum dot color conversion layer and preparation method thereof

A technology of color conversion layer and quantum dots, which is applied in the direction of electrical components, electrical solid devices, circuits, etc., can solve the problems of lower conversion efficiency, difficulty in realization, and degradation of quantum dots, and achieve high material utilization, high preparation accuracy, and suppression stray light effect

Inactive Publication Date: 2021-05-07
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inkjet printing has the characteristics of difficult to control uniformity and prone to "coffee ring effect", and it is difficult to realize when the pattern is less than 20μm
Although photoresist doping and patterning can realize the preparation of quantum dot color conversion layers with a small size below 10 μm, the doped photoresist is easy to degrade quantum dots, reduce their conversion efficiency, and cause a large amount of quantum dots to be wasted.

Method used

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  • Quantum dot color conversion layer and preparation method thereof
  • Quantum dot color conversion layer and preparation method thereof
  • Quantum dot color conversion layer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] figure 1 Shown is the structure of the quantum dot color conversion layer according to Embodiment 1 of the present invention.

[0046] like figure 1 As shown, the quantum dot color conversion layer 1 provided by Embodiment 1 of the present invention includes: a microfluidic substrate 11 and a transparent substrate 15, the transparent substrate 15 is pressed on the bottom side of the microfluidic substrate 11, and the microfluidic substrate 11 Red light quantum dots 12, green light quantum dots 13 and transmission areas 14 are formed inside, the red light quantum dots 12 are used to convert blue light into red light, the green light quantum dots 13 are used to convert blue light into green light, and the transmission area 14 is used to make blue light Shot directly without changing the color.

[0047] figure 2 A structure of a microfluidic channel substrate according to Embodiment 1 of the present invention is shown.

[0048] like figure 2As shown, the microfluidi...

Embodiment 2

[0071] Figure 5 The structure of the quantum dot color conversion layer according to the second embodiment of the present invention is shown.

[0072] like Figure 5 As shown, the quantum dot color conversion layer 1 of Embodiment 2 of the present invention includes a microfluidic substrate 11 and a transparent substrate 15. The difference from Embodiment 1 is that the transparent substrate 15 is pressed on the top side of the microfluidic substrate 11, and the isolation barrier 16 is prepared on the transparent substrate 15. The specific structure of the micro-channel substrate 11 is the same as that of the micro-channel substrate 11 in the first embodiment, so it will not be repeated here.

[0073] Image 6 It is the integration of the quantum dot color conversion layer and the background light Micro-LED array according to the second embodiment of the present invention

[0074] like Image 6 As shown, after the fabrication of the quantum dot color conversion layer 1 is...

Embodiment 3

[0077] Figure 7 and Figure 8 The flow and dynamic process of the preparation method of the quantum dot color conversion layer according to the third embodiment of the present invention are respectively shown.

[0078] like Figure 7 and Figure 8 As shown, the preparation method of the quantum dot color conversion layer provided by the third embodiment of the present invention includes the following steps:

[0079] S1. Design and fabricate a patterned mask substrate according to the distribution of pixels.

[0080] The pixel point includes at least one group of quantum dot positions for injecting quantum dot solution to realize the color conversion of original light, and a micro flow channel for realizing flow of quantum dot solution.

[0081] The quantum dots are divided into two types according to the color, namely the red quantum dots 111 and the green quantum dots 112, the red quantum dots 111 are used to inject the red quantum dot solution, and the green quantum dots ...

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Abstract

The invention provides a quantum dot color conversion layer and a preparation method thereof. The quantum dot color conversion layer comprises a transparent substrate and a micro-channel substrate which are in press fit, and the micro-channel substrate comprises at least one pixel point; each pixel point comprises at least one group of quantum point positions used for injecting a quantum dot solution, a liquid inlet hole used for enabling the quantum dot solution to flow in and a liquid outlet hole used for enabling the quantum dot solution to flow out, and the inlet and the outlet of each quantum point position in each pixel point are respectively communicated with the corresponding liquid inlet hole and the corresponding liquid outlet hole through micro-channels which are not crossed with each other; and the quantum dot solution is injected into each group of quantum dots, and quantum dots for realizing color conversion are formed after the quantum dots are photo-cured. According to the quantum dot color conversion layer, only one micro-channel substrate is needed, color conversion of different colors can be achieved at the same time, a photoetching agent is not doped in quantum dots, and the quantum dots cannot be degraded, so the conversion efficiency of the quantum dots cannot be reduced, and a large amount of waste of the quantum dots cannot be caused.

Description

technical field [0001] The invention relates to the technical field of micro-nano preparation, in particular to a quantum dot color conversion layer and a preparation method thereof. Background technique [0002] At present, there are two main methods for preparing high-density, micro-pixel-sized quantum dot color conversion layers, namely inkjet printing and photoresist doping patterning. Inkjet printing has the characteristics of difficult control of uniformity and prone to "coffee ring effect", and it is difficult to realize when the pattern is less than 20 μm. Although photoresist doping and patterning can realize the preparation of quantum dot color conversion layers with a small size below 10 μm, the doped photoresist is easy to degrade quantum dots, reduce their conversion efficiency, and cause a large amount of quantum dots to be wasted. Contents of the invention [0003] The object of the present invention is to provide a quantum dot color conversion layer prepar...

Claims

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Application Information

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IPC IPC(8): H01L33/50H01L27/15
CPCH01L27/156H01L33/505H01L33/508H01L2933/0041
Inventor 陶金李阳赵永周梁静秋王惟彪秦余欣李香兰郭广通
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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