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Photonic crystal film, liquid crystal display module and display device

A liquid crystal display module and photonic crystal technology, applied in optics, optical components, nonlinear optics, etc., can solve problems such as endangering human health, inability to realize wide color gamut display, and environmental pollution

Active Publication Date: 2021-05-04
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the related technology, although the use of cadmium quantum dot backlight and a suitable color film can achieve a wide color gamut (the color gamut range is greater than 90% of the BT 2020 standard, that is, to achieve 90% of the BT2020 color gamut), but due to its composition containing heavy metals Cadmium can cause environmental pollution and endanger human health
However, backlights using cadmium-free quantum dots can only achieve BT 2020 87% color gamut, and cannot achieve wide color gamut display
[0003] Therefore, the existing wide color gamut display technology still needs to be improved

Method used

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  • Photonic crystal film, liquid crystal display module and display device
  • Photonic crystal film, liquid crystal display module and display device
  • Photonic crystal film, liquid crystal display module and display device

Examples

Experimental program
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Effect test

Embodiment 1

[0061] refer to image 3 , the photonic crystal film 100 includes: three layers of the second sub-photonic crystal film 120 (materials are respectively SiO 2 、SiN x , SiO 2 ), one layer of the first sub-photonic crystal film 110 (the material is SiN x ), two layers of the second sub-photonic crystal film 120 (the material is SiO 2 、SiN x ), and the first sub-photonic crystal film 110 (the material is SiO 2 ).

[0062] Among them, SiO 2 The refractive index of SiN is 1.5; x The refractive index is 1.95. The thickness of the second sub-photonic crystal film 120 is 50nm-90nm; SiN x The formed first sub-photonic crystal film 110 has a thickness of 200 nm to 700 nm; SiO 2 The formed first sub-photonic crystal film 110 has a thickness of 200nm˜300nm.

Embodiment 2

[0064] refer to Figure 4 , the photonic crystal film 100 includes: five layers of the second sub-photonic crystal film 120 (the materials are respectively SiN and x , SiO 2 、SiN x , SiO 2 、SiN x ), one layer of the first sub-photonic crystal film 110 (the material is SiO 2 ), five layers of the second sub-photonic crystal film 120 (materials are respectively SiN x , SiO 2 、SiN x , SiO 2 、SiN x ).

[0065] Among them, SiO 2 The refractive index of SiN is 1.5; x The refractive index is 1.95. The thickness of the second photonic crystal film 120 is 50nm-90nm; the thickness of the first photonic crystal film 110 is 200nm-700nm.

Embodiment 3

[0067] refer to Figure 5 , the photonic crystal film 100 includes: the second sub-photonic crystal film 120 of six layers stacked (the materials are respectively SiN x , SiO 2 、SiN x , SiO 2 、SiN x , SiO 2 ), one layer of the first sub-photonic crystal film 110 (the material is SiN x ), ten layers of the second sub-photonic crystal film 120 (materials are SiO 2 、SiN x , SiO 2 、SiN x , SiO 2 、SiN x , SiO 2 、SiN x , SiO 2 、SiN x ).

[0068] Among them, SiO 2 The refractive index of SiN is 1.5; x The refractive index is 1.95. The thickness of the second photonic crystal film 120 is 50nm-90nm; the thickness of the first photonic crystal film 110 is 200nm-700nm.

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Abstract

The invention provides a photonic crystal film, a liquid crystal display module and a display device. The photonic crystal film includes a plurality of sub-photonic crystal films stacked, and the multiple sub-photonic crystal films include at least one first sub-photonic crystal film; at least three second sub-photonic crystal films, the first sub-photonic crystal film The thickness of the film is greater than the thickness of the second photonic crystal film, the refractive index of two adjacent photonic crystal films is different, the thickness of the first photonic crystal film is 200nm-700nm, and the thickness of the second photonic crystal film is 50nm-200nm , the first photonic crystal film has opposite first surface and second surface, and at least one second photonic crystal film is arranged on the first surface of at least one first photonic crystal film, and the second photonic crystal film is arranged on the second surface There are at least two layers of the second sub-photonic crystal film. The photonic crystal film can reflect light, and when applied to a liquid crystal display module, can narrow the emission spectrum of a light source, thereby enabling the liquid crystal display module to realize wide color gamut display.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a photonic crystal film, a liquid crystal display module and a display device. Background technique [0002] At present, wide color gamut has always been the goal pursued continuously in the field of display technology. In the related technology, although the use of cadmium quantum dot backlight and a suitable color film can achieve a wide color gamut (the color gamut range is greater than 90% of the BT 2020 standard, that is, to achieve 90% of the BT2020 color gamut), but due to its composition containing heavy metals Cadmium can cause environmental pollution and endanger human health. However, the backlight using cadmium-free quantum dots can only achieve BT 2020 87% color gamut, and cannot achieve wide color gamut display. [0003] Therefore, the existing wide color gamut display technology still needs to be improved. Contents of the invention [0004] The present invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/00G02F1/13357
Inventor 刘冰洋陈东川钱学强
Owner BOE TECH GRP CO LTD