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Electric control optical diffraction element based on multistable liquid crystal composition and manufacturing method thereof

A technology for optical diffraction elements and liquid crystal compositions, which is applied in chemical instruments and methods, optics, liquid crystal materials, etc., can solve the problems of high light transmittance, weak scattering ability, and poor uniformity of light.

Active Publication Date: 2019-12-27
重庆汉朗精工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the birefringence Δn of the liquid crystal is generally not large, the light transmittance in the scattering state is high, the scattering ability is weak, and the light uniformity is poor.

Method used

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  • Electric control optical diffraction element based on multistable liquid crystal composition and manufacturing method thereof
  • Electric control optical diffraction element based on multistable liquid crystal composition and manufacturing method thereof
  • Electric control optical diffraction element based on multistable liquid crystal composition and manufacturing method thereof

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Embodiment 1

[0088] The composition ratio of smectic phase liquid crystal composition is shown in the following table 2: Table 2 The composition ratio of smectic phase liquid crystal composition

[0089]

[0090]

[0091] third component

[0092]

[0093] It accounts for 0.04wt% (the sum of the first component and the second component is 100wt%).

[0094] Prepare an electrically controlled optical diffraction element with the above materials, such as image 3 As shown, the electro-optical diffraction element comprises an upper substrate layer 1, an upper conductive layer 2, a liquid crystal layer 3, a lower conductive layer 4, and a lower substrate layer 5;

[0095] Wherein, the upper conductive layer 2 is arranged under the upper substrate layer 1, the lower conductive layer 4 is arranged above the lower substrate layer 5, and the liquid crystal layer 3 is interposed between the upper conductive layer 2 and the lower conductive layer 4, and The area of ​​the liquid crystal laye...

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Abstract

The invention provides a multistable liquid crystal composition. The multistable liquid crystal composition comprises a first component that is at least one compound shown in a general formula (I); asecond component that is at least one compound shown in a general formula (II); and a third component that is organic ions and is at least one compound shown in general formulas (III), (IV) and (V), wherein the first component and the second component form a smectic phase liquid crystal composition. The invention further provides an electric control optical diffraction element prepared from the material and a preparation method of the electric control optical diffraction element. The multistable liquid crystal composition provided by the invention can be stably maintained in scattering and transparent state power failure, so that the system can be randomly switched between a normally black mode and a normally white mode when being used for an optical diffusion sheet in 3D identification. The mixed liquid crystal system has relatively high optical anisotropy by adding the high [delta]n monomer liquid crystal, so that the mixed liquid crystal system has a good scattering effect in an infrared band (940nm), and can be used as an optical element diffusion sheet in 3D identification.

Description

technical field [0001] The invention belongs to the field of liquid crystal application technology, and relates to a multi-stable liquid crystal (MSLC) composition that can be used to improve the scattering effect in 3D recognition. The display element prepared by using the material and the preparation method thereof can be widely used in liquid crystal display, smart Glass, liquid crystal light valve, 3D recognition and other related fields. . Background technique [0002] Adding a liquid crystal light valve that can switch between the scattering state and the transparent state at the front of the DOE light source can switch between the DOE dot matrix and the flood light source, so that it can be applied to 3D property scanning such as face recognition and obstacle judgment of sweeping robots. The liquid crystal-like material can be realized by using PDLC / PNLC material polymer dispersed liquid crystal / network liquid crystal. However, whether it is PDLC or PNLC material sy...

Claims

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Application Information

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IPC IPC(8): C09K19/46C09K19/52G02F1/1333G02F1/1335
CPCC09K19/46C09K19/52G02F1/1333G02F1/133345G02F1/133504
Inventor 孙刚范程士周盼华
Owner 重庆汉朗精工科技有限公司
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