Flexible intelligent dimming film with high visible light transmittance and heat insulation and preparation method of film

An intelligent dimming and visible light technology, which is applied in optics, nonlinear optics, ion implantation plating, etc., can solve the problems of low transmittance and large-area uniformity of light-adjusting films, so as to improve visible light transmittance and suppress The effect of interface reflection

Pending Publication Date: 2020-09-08
宁波材料所杭州湾研究院 +1
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These new transparent electrode-based devices show better bending performance than ITO, but the transmittance and large

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flexible intelligent dimming film with high visible light transmittance and heat insulation and preparation method of film
  • Flexible intelligent dimming film with high visible light transmittance and heat insulation and preparation method of film
  • Flexible intelligent dimming film with high visible light transmittance and heat insulation and preparation method of film

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] The present invention also provides a method for preparing the above-mentioned flexible intelligent light-adjusting film, which includes the following steps:

[0036] A) Prepare two transparent substrates respectively, compound oxide layer, ultra-thin metal layer and oxide layer on the surface of said transparent substrate in sequence to obtain two flexible transparent conductive electrodes;

[0037] B) The oxide layer surfaces of the two flexible transparent conductive electrodes are coated with polymer-dispersed liquid crystals and superimposed, followed by a curing reaction, to obtain a flexible smart light-adjusting film with high visible light transmission and heat insulation.

[0038] The present invention first prepares two transparent substrates, and then composites an oxide layer, an ultra-thin metal layer and an oxide layer on the surface of the transparent substrate in sequence. Among them, the composite method is not particularly limited, and the winding magnetron ...

Example Embodiment

[0043] Example 1

[0044] Step 1: Choose flexible transparent PET with a thickness of 125μm as the base layer;

[0045] Step 2: Using winding magnetron sputtering method to deposit laminated electrodes on the PET substrate. Both bottom and top oxides are Nb 2 O 5 , The thickness is 20-60nm, preferably 35nm; the metal layer is a Cu-doped Ag layer, the thickness is 6-18nm, preferably the thickness is 13nm, where the atomic ratio of Cu and Ag is 1:99-10:90, The preferred ratio is 5:95. Obtained PET / Nb 2 O 5 / Ag-Cu / TiO 2 The sheet resistance of the laminated electrode is 5.2Ω / sq, the average transmittance of visible light (400-800nm) is 85.1% (including the substrate), and the laminated electrode has excellent mechanical flexibility;

[0046] Step 3: Prepare polymer dispersed liquid crystal. Mix NOA65 ultraviolet curing adhesive, LC E7 liquid crystal and silica beads uniformly, and silica beads with a diameter of 20μm are used as fillers to control the thickness of the PDLC device;

[...

Example Embodiment

[0048] Example 2

[0049] Step 1: Choose flexible transparent PET with a thickness of 125μm as the base layer;

[0050] Step 2: Adopt winding magnetron sputtering method to deposit laminated electrodes on PET substrate. Both bottom and top oxides are Nb 2 O 5 , The thickness is 20-60nm, preferably 35nm; the metal layer is a Cu-doped Ag layer, the thickness is 6-18nm, preferably the thickness is 11nm, where the atomic ratio of Cu and Ag is 1:99-10:90, The preferred ratio is 5:95. Obtained PET / Nb 2 O 5 / Ag-Cu / TiO 2 The sheet resistance of the laminated electrode is 6.4Ω / sq, the average visible light transmittance (400-800nm) is 85.2% (including the substrate), and the laminated electrode has excellent mechanical flexibility;

[0051] Step 3: Prepare polymer dispersed liquid crystal. Mix NOA65 ultraviolet curing adhesive, LC E7 liquid crystal and silica beads uniformly, and silica beads with a diameter of 20μm are used as fillers to control the thickness of the PDLC device;

[0052] S...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a flexible intelligent dimming film with visible light high transmittance and heat insulation. The flexible intelligent dimming film comprises a polymer dispersed liquid crystallayer and flexible transparent conductive electrodes symmetrically arranged at the two sides of the polymer dispersed liquid crystal layer. The flexible transparent conductive electrode comprises anoxide layer, an ultrathin metal layer and an oxide layer which are stacked in sequence, and the oxide layer is selected from TiO2 or Nb2O5. The flexible intelligent dimming film provided by the invention has high visible light transmittance and also has efficient heat insulation performance.

Description

technical field [0001] The invention belongs to the technical field of flexible optoelectronic devices, and in particular relates to a flexible intelligent dimming film with high visible light transmission and heat insulation and a preparation method thereof. Background technique [0002] Intelligent polymer dispersed liquid crystal dimming film (PDLC) is a mixture of polymer and liquid crystal particles sandwiched between two transparent electrodes, and the arrangement sequence of liquid crystals is regulated by an electric field, so that the dimming film can be switched between transparent and opaque. Due to its advantages of safety, energy saving, low power consumption, intelligent dimming and ease of use, dimming films have been used in privacy protection, outdoor display, energy-saving windows and other fields. At present, the commercialized dimming film uses ITO transparent conductive film as the electrode, and the sandwich structure of the smart liquid crystal dimming...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G02F1/1334G02F1/1343C23C14/08C23C14/20C23C14/35C23C14/56
CPCG02F1/1334G02F1/134309C23C14/35C23C14/562C23C14/083C23C14/205
Inventor 宋伟杰黄金华李佳杨晔兰品军
Owner 宁波材料所杭州湾研究院
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap