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Semi-reflecting and semi-transmitting glass with electromagnetic shielding function

A semi-reflective, semi-transparent and electromagnetic shielding technology, applied in the coating and other directions, can solve the problems that conductive materials cannot be effectively protected, increase the process and cost, and reduce the shielding effect, so as to achieve excellent reliability, reduce production costs and reliability. high effect

Pending Publication Date: 2017-06-13
YICHANG NANBO DISPLAY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of product has a complex structure, on the one hand, it adds new processes and costs, on the other hand, the conductive materials are often not effectively protected, resulting in serious attenuation of the shielding effect

Method used

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  • Semi-reflecting and semi-transmitting glass with electromagnetic shielding function
  • Semi-reflecting and semi-transmitting glass with electromagnetic shielding function
  • Semi-reflecting and semi-transmitting glass with electromagnetic shielding function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: The three-layer common film-based semi-reflective and semi-transparent structure is: substrate / H1 / L / H, where H represents a high refractive index material. In this example, the substrate is selected as transparent substrate glass, and the H layer is Nb 2 O 5 , the refractive index is 2.5, and the film thickness of the top H layer is 50 nm; L represents a low refractive index material, in this example, SiO is selected 2 , the refractive index is 1.46, and the film thickness is 80 nm. The H1 layer is ITO, the refractive index is 2.1, the film thickness is 60 nm, and the sheet resistance is 30 ohms. The test reflectivity from the air surface (non-film surface) of the substrate is 50%, and the reflection is blue-green. In the uniform chromaticity space (L, a, b), L=73, a=-10, b=-22.

[0023] Compared with Example 1, the shielding effectiveness and reflectivity of Comparative Examples 1-3 are shown in Table 1 below:

[0024] Table 1

[0025]

[0026]

[00...

Embodiment 2

[0030] Example 2: The five-layer ordinary film-based semi-reflective and semi-transparent structure is: substrate / H1 / L / H / L / H, where H represents a high refractive index material. In this example, the substrate is selected as transparent substrate glass, and the H layer is Nb 2 O 5 , the refractive index is 2.5, the film thickness of the bottom H layer is 33 nm, and the film thickness of the top H layer is 65 nm; L represents a low refractive index material, in this example, SiO is selected 2 , the refractive index is 1.46, the film thickness of the bottom L layer is 2 nm, and the film thickness of the upper L layer is 90 nm. The H1 layer on the other side of the substrate is ITO, the refractive index is 2.1, the film thickness is 95 nm, and the sheet resistance is 17 ohms. The test reflectivity from the air surface (non-film surface) of the substrate is 48%, and the reflected color is almost colorless. In the uniform chromaticity space (L, a, b), L=75, a=0, b=-1.

[0031] Co...

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Abstract

The invention discloses semi-reflecting and semi-transmitting glass with an electromagnetic shielding function. The semi-reflecting and semi-transmitting glass comprises a glass substrate, wherein multiple layers of dielectric films are arranged on the glass substrate from inside to outside; the dielectric films are overlapped and arrayed according to a standard of one high refraction index layer and one low refraction index layer; the innermost and outermost layers of dielectric films are the high refraction index layers; a certain high refraction index layer in other high refraction index layers except for the outermost layer of dielectric film is made of a high refraction index transparent conductive material which is particularly tin indium oxide, aluminum zinc oxide or fluorine doped tin oxide with the refraction index of 1.8 to 2.5. The glass integrates the electromagnetic shielding function and semi-reflecting and semi-transmitting functions; on one hand, production procedures are reduced, and the production cost is reduced; on the other hand, the transparent conductive material arranged on the inner layer can be better protected, so that the semi-reflecting and semi-transmitting glass has the electromagnetic shielding function with higher reliability.

Description

technical field [0001] The invention relates to the field of transparent conductive glass, in particular to a semi-reflective and semi-transparent glass with electromagnetic shielding function. Background technique [0002] However, with the rapid development of electronic technology, the density of electronic equipment is increasing, and the situation of electromagnetic interference is becoming more and more prominent. In order to ensure that the electronic device will not be interfered by the external electromagnetic field during operation, and at the same time not cause unacceptable electromagnetic interference to other equipment in the environment, the electromagnetic shielding film and its design also become particularly important. [0003] Transflective displays are more and more widely used in car rearview mirrors, smart homes, etc. The current transflective display is mainly realized by arranging glass with transflective optical properties outside the display screen...

Claims

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Application Information

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IPC IPC(8): C03C17/34
CPCC03C17/3417C03C2218/156
Inventor 马志锋孙官恩张莉
Owner YICHANG NANBO DISPLAY
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