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Anti-electromagnetic interference liquid crystal display screen

A liquid crystal display, anti-electromagnetic interference technology, applied in the direction of magnetic/electric field shielding, electrical components, coatings, etc., can solve the problems of poor conductivity of transparent electromagnetic shielding film, low electromagnetic shielding effect, and small protective effect of liquid crystal display , to achieve the effect of improving anti-electromagnetic interference performance, improving shielding efficiency, and improving electromagnetic wave shielding effect

Pending Publication Date: 2022-02-18
SHENZHEN HIFAY PHOTOELECTRIC DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned transparent electromagnetic shielding film has poor electrical conductivity, low electromagnetic shielding effect, and less protective effect on liquid crystal display screens.

Method used

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  • Anti-electromagnetic interference liquid crystal display screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The anti-electromagnetic interference liquid crystal display of this embodiment includes a backlight plate, a lower substrate, a liquid crystal layer, an electrode layer, and an upper substrate in sequence along the light emitting direction, and a base layer and an electromagnetic shielding layer are arranged on the lower substrate in sequence along the light emitting direction.

[0037] Wherein, the base layer is made of polypropylene material with a thickness of 900 μm.

[0038] The electromagnetic shielding layer of this embodiment is made of the following raw materials: polymethylmethacrylate 2200g, polyethylenedioxythiophene 200g, zinc oxide 500g, strontium ferrite 70g, shielding agent 180g, dimethyl sulfoxide 50g , enhancer 5g, dispersant 10g.

[0039] Among them, the average particle diameter of zinc oxide is 50 nm. The purity of strontium ferrite is 99.9%, the average particle size is 80nm, the specific surface area is 28㎡ / g, and the particle shape is spherical...

Embodiment 2

[0044] The anti-electromagnetic interference liquid crystal display of this embodiment includes a backlight plate, a lower substrate, a liquid crystal layer, an electrode layer, and an upper substrate in sequence along the light emitting direction, and a base layer and an electromagnetic shielding layer are arranged on the lower substrate in sequence along the light emitting direction.

[0045] Wherein, the base layer is made of polypropylene material with a thickness of 900 μm.

[0046] The electromagnetic shielding layer of this embodiment is made of the following raw materials: polymethylmethacrylate 2850g, polyethylenedioxythiophene 280g, zinc oxide 600g, strontium ferrite 120g, shielding agent 155g, dimethyl sulfoxide 75g , enhancer 8g, dispersant 22g.

[0047] Among them, the average particle diameter of zinc oxide is 50 nm. The purity of strontium ferrite is 99.9%, the average particle size is 80nm, the specific surface area is 28㎡ / g, and the particle shape is spherica...

Embodiment 3

[0050] The anti-electromagnetic interference liquid crystal display of this embodiment includes a backlight plate, a lower substrate, a liquid crystal layer, an electrode layer, and an upper substrate in sequence along the light emitting direction, and a base layer and an electromagnetic shielding layer are arranged on the lower substrate in sequence along the light emitting direction.

[0051] Wherein, the base layer is made of polypropylene material with a thickness of 900 μm.

[0052] The electromagnetic shielding layer of this embodiment is made of the following raw materials: polymethylmethacrylate 3500g, polyethylenedioxythiophene 350g, zinc oxide 700g, strontium ferrite 150g, shielding agent 120g, dimethyl sulfoxide 100g , Enhancer 12g, dispersant 30g.

[0053] Among them, the average particle diameter of zinc oxide is 50 nm. The purity of strontium ferrite is 99.9%, the average particle size is 80nm, the specific surface area is 28㎡ / g, and the particle shape is spheri...

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Abstract

The invention relates to the technical field of liquid crystal display screens, and particularly discloses an anti-electromagnetic interference liquid crystal display screen. The anti-electromagnetic interference liquid crystal display screen sequentially comprises a backlight plate, a lower substrate, a liquid crystal layer, an electrode layer and an upper substrate in the light emitting direction, a substrate layer is arranged on the lower substrate, and an electromagnetic shielding layer is arranged on the substrate layer. The electromagnetic shielding layer is mainly prepared from the following raw materials in parts by weight: 220 to 350 parts of polymethyl methacrylate, 20 to 35 parts of polyethylene dioxythiophene, 50 to 70 parts of zinc oxide, 7 to 15 parts of strontium ferrite, 12 to 18 parts of a shielding agent, 5 to 10 parts of dimethyl sulfoxide, 0.5 to 1.2 parts of a reinforcing agent and 1 to 3 parts of a dispersing agent; the shielding agent is at least one of silicon carbide, boron nitride and molybdenum carbide. The anti-electromagnetic interference liquid crystal display screen has the advantage of being good in anti-electromagnetic interference performance.

Description

technical field [0001] The present application relates to the technical field of liquid crystal display screens, and more specifically, it relates to a liquid crystal display screen resistant to electromagnetic interference. Background technique [0002] At present, liquid crystal displays are widely used in televisions, computers, industrial man-machine displays, etc., and have the advantages of low power consumption, small size, and low radiation. Under the action of an electric field, the liquid crystal display uses the constant change of the alignment direction of the liquid crystal molecules to change the light transmittance of the external light source to complete the electro-optical conversion, and then uses the different excitations of the R, G, and B three primary color signals to pass the red light. Green and blue three-color filter film to complete the color reproduction in time domain and space domain. [0003] With the continuous development of science and tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1333H05K9/00C09D133/12C09D165/00C09D7/61C09D7/62
CPCG02F1/133334H05K9/0081C09D133/12C09D7/61C09D7/70C09D7/62G02F2202/22C08K2003/2296C08K2201/011C08K2003/385C08L65/00C08K3/22C08K7/10C08K3/34C08K3/38C08K3/14C08K9/10
Inventor 郑泽彬向俊杰黄金成
Owner SHENZHEN HIFAY PHOTOELECTRIC DEV
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