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PDLC composition with wide viewing angle

A composition, wide viewing angle technology, applied in liquid crystal materials, chemical instruments and methods, etc., can solve the problems of reduced film transmittance, viewing angle problems, and the degree of refractive index matching is not as good as the vertical direction, etc., to achieve good viewing angle characteristics, improve film The effect of reducing the surface transmittance and improving the customer experience

Inactive Publication Date: 2016-05-25
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the light and the film surface form a certain angle, the degree of refractive index matching at this angle is not as good as that in the vertical direction, so a certain degree of light scattering is caused. When the film surface is observed at this angle, the transmittance of the film decreases, and the film surface scatters light. causing perspective problems

Method used

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  • PDLC composition with wide viewing angle
  • PDLC composition with wide viewing angle
  • PDLC composition with wide viewing angle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A PDLC composition with a wide viewing angle in this embodiment, the components in the PDLC composition and their weight percentages are as follows:

[0065] Light curing material 49.0%,

[0066] Liquid crystal material 50.0%,

[0067] Photoinitiator 1.0%.

[0068] The components of the photocurable material of this embodiment and the weight percentage of the components in the PDLC composition are specifically:

[0069] Photocurable prepolymer 24.0%,

[0070] Thinner 22.0%,

[0071] Reactive Liquid Crystal 3.0%.

[0072] The photocuring prepolymer chooses CN704 from Sartomer Company. CN704 is a monofunctional acrylic polyester, which can improve the adhesion. In this formula, it is used as the main component to provide the strength of the polymer.

[0073] The diluent is hydroxypropyl acrylate.

[0074] The structural formula of the reactive liquid crystal and its weight percentage in the PDLC composition are specifically:

[0075]

[0076] The liquid crystal...

Embodiment 2

[0080] A PDLC composition with a wide viewing angle in this embodiment, the components in the PDLC composition and their weight percentages are as follows:

[0081] Light curing material 48.0%,

[0082] Liquid crystal material 50.0%,

[0083] Photoinitiator 2.0%;

[0084] The components of the photocurable material of this embodiment and the weight percentage of the components in the PDLC composition are specifically:

[0085] Photocurable prepolymer 24.0%,

[0086] Thinner 21.0%,

[0087] Reactive Liquid Crystal 3.0%.

[0088] The photocuring prepolymer is selected from Sartomer's acrylic polyurethane CN966J75NS. CN966J75NS is a bifunctional aliphatic urethane acrylate polymer with high strength and good toughness. In this formula, it mainly provides polymer strength and toughness.

[0089] The diluent is lauryl acrylate.

[0090] The structural formula of the reactive liquid crystal and its weight percentage in the PDLC composition are specifically:

[0091]

[00...

Embodiment 3

[0096] A PDLC composition with a wide viewing angle in this embodiment, the components in the PDLC composition and their weight percentages are as follows:

[0097] Light curing material 44.0%,

[0098] Liquid crystal material 55.0%,

[0099] Photoinitiator 1.0%;

[0100] The components of the photocurable material of this embodiment and the weight percentage of the components in the PDLC composition are specifically:

[0101] Photocurable prepolymer 17.0%,

[0102] Thinner 21.0%,

[0103] Reactive Liquid Crystal 4.0%.

[0104] The light-curing prepolymer chooses acrylic polyurethane UV65 from Shanghai Kuer Industrial Co., Ltd. UV65 has the characteristics of high strength and good toughness. In this formula, it mainly provides polymer strength and toughness.

[0105] The components of the diluent and the weight percentage of the components in the PDLC composition are specifically:

[0106]

[0107] The structural formula of the reactive liquid crystal and its weight...

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Abstract

The present invention discloses a PDLC composition with wide viewing angle. The PDLC composition comprise the following components by weight: 35.0-60.0% of a light curable material, 35.0-65.0% of a liquid crystal material and 0.1-5.0% of a photoinitiator; and the PDLC composition further comprises a spacer accounting for 0.1-0.3% total weight of the PDLC composition. The composition can be used as a dimming material in dimming film or dimming glass, has excellent viewing angle characteristics, and can improve the reduced transmittance of PDLC film surface in the case of side viewing, and can enhance the customer experience.

Description

technical field [0001] The present invention relates to the technical field of liquid crystal materials, in particular to a PDLC composition with a wide viewing angle, and in particular to a PDLC with a wide viewing angle, which is applied in the field of dimming technology such as dimming film, dimming glass, and intelligent rear projection. Dimming material. Background technique [0002] Polymer Dispersed Liquid Crystal (PDLC for short) forms a network through polymers, and disperses liquid crystals in micron-scale droplets in its polymer network, which is generally made into an optical film. [0003] Due to the scattered optical axis of the liquid crystal droplet, its extraordinary optical refractive index does not match the refractive index of the polymer network, and the refractive index of the liquid crystal droplet with different orientations of the optical axis also does not match. Strong scattering occurs at the droplet / network, droplet / droplet interface resulting ...

Claims

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Application Information

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IPC IPC(8): C09K19/52C09K19/12C09K19/46C09K19/18
CPCC09K19/52C09K19/12C09K19/126C09K19/18C09K19/46C09K2019/122C09K2019/127C09K2019/128C09K2019/181
Inventor 李正强郭剑张兴华瑞茂
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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