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Optical film and preparation method and application thereof

An optical film and film technology, applied in optics, optical components, nonlinear optics, etc., can solve problems such as accelerated optical film aging, and achieve the effect of improving reliability

Pending Publication Date: 2021-01-29
SHENZHEN PLANCK INNOVATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention ignores the quantum dot membrane. After the red and green quantum dots are directly mixed into a film, the interaction between quantum dots or quantum dot ligands will also accelerate the aging of the optical membrane.

Method used

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  • Optical film and preparation method and application thereof
  • Optical film and preparation method and application thereof
  • Optical film and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] This embodiment provides an optical film such as figure 1 As shown in the figure, the optical film includes a first water and oxygen barrier film 201 (silicon nitride), a red light quantum dot light-emitting film 101 (thickness is 50 μm), and a green light quantum dot light-emitting film. 102 (thickness: 25 μm), blue quantum dot luminescent film 103 (thickness: 50 μm), and second water and oxygen barrier layer 202 (silicon nitride).

[0094] The preparation method of above-mentioned optical film comprises the steps:

[0095] (a) Preparation of quantum dot materials:

[0096] Dissolve InP, drop PMA, and then drop oleylamine to obtain a red light quantum dot material with a core-shell structure (luminescence peak wavelength is 630nm);

[0097] CsPbBr 3 Dissolved, SiO was added dropwise 2 , then drop oleylamine to obtain a green light quantum dot material with a core-shell structure (luminescence peak wavelength is 530nm);

[0098] Dissolve the CdSe system material, t...

Embodiment 2

[0109] This embodiment provides an optical film, which includes a first water and oxygen barrier film (aluminum oxide), a red light quantum dot luminescent film (thickness is 10 μm), and a green light quantum dot luminescent film that are sequentially stacked. (thickness is 5 μm), blue light quantum dot luminescent film (thickness is 10 μm), and the second water and oxygen barrier film (aluminum oxide).

[0110] The preparation method of above-mentioned optical film comprises the steps:

[0111] (a) Preparation of quantum dot materials:

[0112] Dissolve CdSe, drop ZrO 2 , then drop oleic acid to obtain a red light quantum dot material with a core-shell structure (luminescence peak wavelength is 600nm);

[0113] CsPbBr 3 Dissolve, add PVDF dropwise, and drop oleic acid again to obtain a green light quantum dot material with a core-shell structure (luminescence peak wavelength is 510nm);

[0114] Dissolve InP, then add TiO 2 , ZrO 2 and ZnO, and then drop oleic acid to ob...

Embodiment 3

[0125] This embodiment provides an optical film, which includes a first water and oxygen barrier film (silicon carbide), a red light quantum dot light-emitting film (thickness is 80 μm), and a green light quantum dot light-emitting film that are sequentially stacked. (thickness is 50 μm), blue light quantum dot luminescent film (thickness is 80 μm), and the second water and oxygen barrier film (silicon carbide).

[0126] The preparation method of above-mentioned optical film comprises the steps:

[0127] (a) Preparation of quantum dot materials:

[0128] CsPbBr 3 Dissolve, drop TiO 2 , and then drop long-chain phosphonic acid to obtain a red light quantum dot material with a core-shell structure (luminescence peak wavelength is 660nm);

[0129] Dissolve InP, drop TiO 2 , and then drop long-chain phosphonic acid to obtain a green light quantum dot material with a core-shell structure (luminescence peak wavelength is 550nm);

[0130] Dissolve CdSe, then add TiO 2 , and the...

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Abstract

The invention relates to an optical film and a preparation method and application thereof. The optical film comprises a first water-blocking oxygen-isolating film, a quantum dot light-emitting film and a second water-blocking oxygen-isolating film which are sequentially arranged in a stacked mode; the quantum dot light-emitting film comprises two or a combination of three of a red light quantum dot light-emitting film, a green light quantum dot light-emitting film and a blue light quantum dot light-emitting film which are stacked. According to the optical film, different quantum dot light-emitting films are arranged in a stacked mode, performance degradation of the optical film caused by mutual reaction among different quantum dots and between the different quantum dots and quantum dot ligands under the action of illumination, water vapor and oxygen is avoided, and the reliability of products can be effectively improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optical film and its preparation method and application. Background technique [0002] Modern society relies more and more on display technology, and the color gamut value of the display is crucial to the usability of the product. The NTSC color gamut of traditional liquid crystal displays is generally around 70%, and the NTSC color gamut of self-luminous OLED displays can reach 100%. Therefore, the display in the product has a high LCD color gamut value, which will definitely stand out among similar products. The improvement of the color gamut value is mainly realized by improving the backlight source. Quantum dot material is a kind of inorganic nano-semiconductor crystal, which has the characteristics of narrow emission wavelength and adjustable wavelength. It has been applied in the field of LCD backlight source in recent years. Domain boost to over 100%. [0003] At pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/10G02F1/13357
CPCG02B1/10G02F1/1336
Inventor 张志宽高丹鹏徐冰孙小卫
Owner SHENZHEN PLANCK INNOVATION TECH CO LTD
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