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Colored quantum dot photoluminescence material based on microcapsule electrophoresis as well as luminescence method and application thereof

A technology of microcapsules and quantum dots, applied in luminescent materials, chemical instruments and methods, optics, etc., can solve the problems of energy utilization, brightness, insufficient color gamut, many added layers, too thick materials, etc.

Active Publication Date: 2018-06-15
SHENZHEN PLANCK INNOVATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The color electronic paper provided by the existing technology often has too many layers, too thick material, and insufficient energy utilization rate, brightness and color gamut. Therefore, it is necessary to develop new electronic paper preparation materials and technologies

Method used

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  • Colored quantum dot photoluminescence material based on microcapsule electrophoresis as well as luminescence method and application thereof
  • Colored quantum dot photoluminescence material based on microcapsule electrophoresis as well as luminescence method and application thereof
  • Colored quantum dot photoluminescence material based on microcapsule electrophoresis as well as luminescence method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] This embodiment provides a photoluminescent material based on microcapsule electrophoresis colored quantum dots, which includes a red microcapsule, a green microcapsule and a blue microcapsule, all of which have a diameter of 100 μm.

[0068] The red microcapsules include: a microcapsule wall cavity, a filtered electrophoretic display liquid that only passes through the blue band, positively charged CdSe / CdS quantum dots that emit red light, and the capsules are excited with a blue backlight; the green microcapsules The capsule includes: a microcapsule wall cavity, a filtered electrophoretic display liquid that only passes through the blue band, positively charged CdSe / CdS quantum dots that emit green light, and the capsule is excited with a blue backlight; the blue microcapsule includes: Microcapsule wall cavity, blue-only filtered electrophoretic display fluid, black polymer spheres of positively charged Sudan Black B dye combined with particle medium, the capsules are...

Embodiment 2

[0077] The photoluminescent material based on microcapsule electrophoresis colored quantum dots provided in this embodiment is exactly the same as that in Embodiment 1.

[0078] The color of the material is controlled as follows:

[0079] As shown in Figure 1(a), in this embodiment, the upper surface (top) of the red microcapsule is positively charged and the lower surface (bottom) is negatively charged, and the positively charged red quantum dots will be electrophoresed to the bottom and excited by the blue backlight The resulting red light will be absorbed by the filter material (filter electrophoretic display liquid), and the red microcapsules will not emit light at this time.

[0080] As shown in Figure 2(a), in this embodiment, the upper surface (top) of the green microcapsule is positively charged and the lower surface (bottom) is negatively charged. The green light generated after excitation will be absorbed by the filter material (filter electrophoretic display liquid...

Embodiment 3

[0084] The photoluminescent material based on microcapsule electrophoresis colored quantum dots provided in this example is exactly the same as that in Example 1 except that the quantum dots emitting red light, the quantum dots emitting green light, and the light-shielding particles are all negatively charged.

[0085] The color of the material is controlled as follows:

[0086] In this embodiment, the upper surface (top) of the red microcapsule is positively charged and the lower surface (bottom) is negatively charged, and the negatively charged red quantum dots will be electrophoresed to the top, and will be excited by the blue backlight to emit red light. Control the number of quantum dots in the upper layer to control the luminous flux.

[0087] In this embodiment, the upper surface (top) of the green microcapsule is negatively charged and the lower surface (bottom) is positively charged, and the negatively charged green quantum dots will be electrophoresed to the bottom, ...

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Abstract

The invention relates to a colored quantum dot photoluminescence material based on microcapsule electrophoresis as well as a luminescence method and application thereof. According to the material, blue backlight is used for stimulating red or green quantum dots and the quantum dots are used as sub-pixels for luminescence; then the quantum dot are put into a microcapsule; the position of the quantum dots is determined through controlling voltage on the surface of the microcapsule, so that the size of a luminous flux is controlled; a light filtering material is added into an electrophoresis display solution so that only blue light can pass through. According to the colored quantum dot photoluminescence material provided by the invention, the quantum dots are combined with a microcapsule electrophoresis display technology, and the color of each colored sub-pixel and the luminous flux are controlled through controlling the direction and size of voltage; then the light is combined to form light with the needed color. By adopting the colored quantum dot photoluminescence material, the luminous flux is greatly improved, the energy utilization rate and the brightness are enhanced and the brightness of colored electronic paper is improved; meanwhile, a color range is expanded and the display quality is improved; the colored electronic paper with good performance can be improved, so thatthe colored quantum dot photoluminescence material has a good application prospect.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a photoluminescence material based on microcapsule electrophoresis color quantum dots and a light-emitting method and application thereof. Background technique [0002] The use of paper plays an important role in the development of human civilization and the inheritance of culture. However, with the development of science and technology, traditional paper has gradually revealed its disadvantages due to problems such as indelibility and waste of resources. This has led to the emergence of electronic paper, which is a A new type of reading device that can replace paper in the traditional sense and achieve the functions of environmental protection, energy saving and effective utilization. [0003] In the current research field of electronic paper, the most widely used electronic paper technology is electrophoretic display technology, which can transform black and white colors throu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/88C09K11/02G02F1/167
CPCC09K11/02C09K11/883G02F1/167
Inventor 王恺孙小卫白雪赵冰心李尚
Owner SHENZHEN PLANCK INNOVATION TECH CO LTD
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